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Changes in 4.4.242
SUNRPC: ECONNREFUSED should cause a rebind.
scripts/setlocalversion: make git describe output more reliable
powerpc/powernv/opal-dump : Use IRQ_HANDLED instead of numbers in interrupt handler
efivarfs: Replace invalid slashes with exclamation marks in dentries.
ravb: Fix bit fields checking in ravb_hwtstamp_get()
tipc: fix memory leak caused by tipc_buf_append()
mtd: lpddr: Fix bad logic in print_drs_error
ata: sata_rcar: Fix DMA boundary mask
fscrypt: return -EXDEV for incompatible rename or link into encrypted dir
f2fs crypto: avoid unneeded memory allocation in ->readdir
powerpc/powernv/smp: Fix spurious DBG() warning
sparc64: remove mm_cpumask clearing to fix kthread_use_mm race
f2fs: fix to check segment boundary during SIT page readahead
um: change sigio_spinlock to a mutex
xfs: fix realtime bitmap/summary file truncation when growing rt volume
video: fbdev: pvr2fb: initialize variables
ath10k: fix VHT NSS calculation when STBC is enabled
mmc: via-sdmmc: Fix data race bug
printk: reduce LOG_BUF_SHIFT range for H8300
kgdb: Make "kgdbcon" work properly with "kgdb_earlycon"
USB: adutux: fix debugging
drivers/net/wan/hdlc_fr: Correctly handle special skb->protocol values
power: supply: test_power: add missing newlines when printing parameters by sysfs
md/bitmap: md_bitmap_get_counter returns wrong blocks
clk: ti: clockdomain: fix static checker warning
net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
drivers: watchdog: rdc321x_wdt: Fix race condition bugs
ext4: Detect already used quota file early
gfs2: add validation checks for size of superblock
memory: emif: Remove bogus debugfs error handling
ARM: dts: s5pv210: move PMU node out of clock controller
ARM: dts: s5pv210: remove dedicated 'audio-subsystem' node
md/raid5: fix oops during stripe resizing
leds: bcm6328, bcm6358: use devres LED registering function
NFS: fix nfs_path in case of a rename retry
ACPI / extlog: Check for RDMSR failure
ACPI: video: use ACPI backlight for HP 635 Notebook
acpi-cpufreq: Honor _PSD table setting on new AMD CPUs
w1: mxc_w1: Fix timeout resolution problem leading to bus error
scsi: mptfusion: Fix null pointer dereferences in mptscsih_remove()
btrfs: reschedule if necessary when logging directory items
vt: keyboard, simplify vt_kdgkbsent
vt: keyboard, extend func_buf_lock to readers
dmaengine: dma-jz4780: Fix race in jz4780_dma_tx_status
iio:gyro:itg3200: Fix timestamp alignment and prevent data leak.
powerpc/powernv/elog: Fix race while processing OPAL error log event.
ubifs: dent: Fix some potential memory leaks while iterating entries
ubi: check kthread_should_stop() after the setting of task state
ia64: fix build error with !COREDUMP
ceph: promote to unsigned long long before shifting
libceph: clear con->out_msg on Policy::stateful_server faults
9P: Cast to loff_t before multiplying
ring-buffer: Return 0 on success from ring_buffer_resize()
vringh: fix __vringh_iov() when riov and wiov are different
tty: make FONTX ioctl use the tty pointer they were actually passed
arm64: berlin: Select DW_APB_TIMER_OF
cachefiles: Handle readpage error correctly
hil/parisc: Disable HIL driver when it gets stuck
ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
ARM: s3c24xx: fix missing system reset
device property: Keep secondary firmware node secondary by type
device property: Don't clear secondary pointer for shared primary firmware node
staging: comedi: cb_pcidas: Allow 2-channel commands for AO subdevice
xen/events: don't use chip_data for legacy IRQs
tipc: fix use-after-free in tipc_bcast_get_mode
gianfar: Replace skb_realloc_headroom with skb_cow_head for PTP
gianfar: Account for Tx PTP timestamp in the skb headroom
Fonts: Replace discarded const qualifier
ALSA: usb-audio: Add implicit feedback quirk for Qu-16
ftrace: Fix recursion check for NMI test
ftrace: Handle tracing when switching between context
ARM: dts: sun4i-a10: fix cpu_alert temperature
x86/kexec: Use up-to-dated screen_info copy to fill boot params
of: Fix reserved-memory overlap detection
scsi: core: Don't start concurrent async scan on same host
vsock: use ns_capable_noaudit() on socket create
vt: Disable KD_FONT_OP_COPY
fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent
serial: 8250_mtk: Fix uart_get_baud_rate warning
serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init
USB: serial: cyberjack: fix write-URB completion race
USB: serial: option: add LE910Cx compositions 0x1203, 0x1230, 0x1231
USB: serial: option: add Telit FN980 composition 0x1055
USB: Add NO_LPM quirk for Kingston flash drive
ARC: stack unwinding: avoid indefinite looping
Revert "ARC: entry: fix potential EFA clobber when TIF_SYSCALL_TRACE"
Linux 4.4.242
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I9c6408c403a91272e8255725dc8de294e522dc90
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commit 879bc2d27904354b98ca295b6168718e045c4aa2 upstream.
When starting a HP machine with HIL driver but without an HIL keyboard
or HIL mouse attached, it may happen that data written to the HIL loop
gets stuck (e.g. because the transaction queue is full). Usually one
will then have to reboot the machine because all you see is and endless
output of:
Transaction add failed: transaction already queued?
In the higher layers hp_sdc_enqueue_transaction() is called to queued up
a HIL packet. This function returns an error code, and this patch adds
the necessary checks for this return code and disables the HIL driver if
further packets can't be sent.
Tested on a HP 730 and a HP 715/64 machine.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 1c9c02bb22684f6949d2e7ddc0a3ff364fd5a6fc upstream.
Update logic for broken test. Use a more common logging style.
It appears the logic in this function is broken for the
consecutive tests of
if (prog_status & 0x3)
...
else if (prog_status & 0x2)
...
else (prog_status & 0x1)
...
Likely the first test should be
if ((prog_status & 0x3) == 0x3)
Found by inspection of include files using printk.
Fixes: eb3db27507f7 ("[MTD] LPDDR PFOW definition")
Cc: stable@vger.kernel.org
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/3fb0e29f5b601db8be2938a01d974b00c8788501.1588016644.git.gustavo@embeddedor.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.241
ibmveth: Identify ingress large send packets.
tipc: fix the skb_unshare() in tipc_buf_append()
net/ipv4: always honour route mtu during forwarding
r8169: fix data corruption issue on RTL8402
ALSA: bebob: potential info leak in hwdep_read()
mm/kasan: print name of mem[set,cpy,move]() caller in report
mm/kasan: add API to check memory regions
compiler.h, kasan: Avoid duplicating __read_once_size_nocheck()
compiler.h: Add read_word_at_a_time() function.
lib/strscpy: Shut up KASAN false-positives in strscpy()
x86/mm/ptdump: Fix soft lockup in page table walker
net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device
net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup
nfc: Ensure presence of NFC_ATTR_FIRMWARE_NAME attribute in nfc_genl_fw_download()
tcp: fix to update snd_wl1 in bulk receiver fast path
icmp: randomize the global rate limiter
cifs: remove bogus debug code
ima: Don't ignore errors from crypto_shash_update()
EDAC/i5100: Fix error handling order in i5100_init_one()
crypto: ixp4xx - Fix the size used in a 'dma_free_coherent()' call
media: Revert "media: exynos4-is: Add missed check for pinctrl_lookup_state()"
media: m5mols: Check function pointer in m5mols_sensor_power
media: omap3isp: Fix memleak in isp_probe
crypto: omap-sham - fix digcnt register handling with export/import
media: tc358743: initialize variable
media: ti-vpe: Fix a missing check and reference count leak
ath6kl: prevent potential array overflow in ath6kl_add_new_sta()
ath9k: Fix potential out of bounds in ath9k_htc_txcompletion_cb()
wcn36xx: Fix reported 802.11n rx_highest rate wcn3660/wcn3680
mwifiex: Do not use GFP_KERNEL in atomic context
drm/gma500: fix error check
scsi: qla4xxx: Fix an error handling path in 'qla4xxx_get_host_stats()'
scsi: csiostor: Fix wrong return value in csio_hw_prep_fw()
backlight: sky81452-backlight: Fix refcount imbalance on error
VMCI: check return value of get_user_pages_fast() for errors
tty: serial: earlycon dependency
tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()
pty: do tty_flip_buffer_push without port->lock in pty_write
drivers/virt/fsl_hypervisor: Fix error handling path
video: fbdev: vga16fb: fix setting of pixclock because a pass-by-value error
video: fbdev: sis: fix null ptr dereference
HID: roccat: add bounds checking in kone_sysfs_write_settings()
ath6kl: wmi: prevent a shift wrapping bug in ath6kl_wmi_delete_pstream_cmd()
misc: mic: scif: Fix error handling path
ALSA: seq: oss: Avoid mutex lock for a long-time ioctl
quota: clear padding in v2r1_mem2diskdqb()
net: enic: Cure the enic api locking trainwreck
mfd: sm501: Fix leaks in probe()
usb: gadget: u_ether: enable qmult on SuperSpeed Plus as well
nl80211: fix non-split wiphy information
mwifiex: fix double free
net: korina: fix kfree of rx/tx descriptor array
IB/mlx4: Adjust delayed work when a dup is observed
powerpc/pseries: Fix missing of_node_put() in rng_init()
powerpc/icp-hv: Fix missing of_node_put() in success path
mtd: lpddr: fix excessive stack usage with clang
mtd: mtdoops: Don't write panic data twice
ARM: 9007/1: l2c: fix prefetch bits init in L2X0_AUX_CTRL using DT values
powerpc/tau: Use appropriate temperature sample interval
powerpc/tau: Remove duplicated set_thresholds() call
powerpc/tau: Disable TAU between measurements
perf intel-pt: Fix "context_switch event has no tid" error
kdb: Fix pager search for multi-line strings
powerpc/perf/hv-gpci: Fix starting index value
cpufreq: powernv: Fix frame-size-overflow in powernv_cpufreq_reboot_notifier
lib/crc32.c: fix trivial typo in preprocessor condition
vfio/pci: Clear token on bypass registration failure
Input: imx6ul_tsc - clean up some errors in imx6ul_tsc_resume()
Input: ep93xx_keypad - fix handling of platform_get_irq() error
Input: omap4-keypad - fix handling of platform_get_irq() error
Input: sun4i-ps2 - fix handling of platform_get_irq() error
KVM: x86: emulating RDPID failure shall return #UD rather than #GP
memory: omap-gpmc: Fix a couple off by ones
memory: fsl-corenet-cf: Fix handling of platform_get_irq() error
arm64: dts: zynqmp: Remove additional compatible string for i2c IPs
powerpc/powernv/dump: Fix race while processing OPAL dump
media: firewire: fix memory leak
media: ati_remote: sanity check for both endpoints
media: exynos4-is: Fix several reference count leaks due to pm_runtime_get_sync
media: exynos4-is: Fix a reference count leak due to pm_runtime_get_sync
media: exynos4-is: Fix a reference count leak
media: bdisp: Fix runtime PM imbalance on error
media: media/pci: prevent memory leak in bttv_probe
media: uvcvideo: Ensure all probed info is returned to v4l2
mmc: sdio: Check for CISTPL_VERS_1 buffer size
media: saa7134: avoid a shift overflow
ntfs: add check for mft record size in superblock
PM: hibernate: remove the bogus call to get_gendisk() in software_resume()
scsi: mvumi: Fix error return in mvumi_io_attach()
scsi: target: core: Add CONTROL field for trace events
usb: gadget: function: printer: fix use-after-free in __lock_acquire
udf: Limit sparing table size
udf: Avoid accessing uninitialized data on failed inode read
ath9k: hif_usb: fix race condition between usb_get_urb() and usb_kill_anchored_urbs()
misc: rtsx: Fix memory leak in rtsx_pci_probe
reiserfs: only call unlock_new_inode() if I_NEW
xfs: make sure the rt allocator doesn't run off the end
usb: ohci: Default to per-port over-current protection
Bluetooth: Only mark socket zapped after unlocking
scsi: ibmvfc: Fix error return in ibmvfc_probe()
brcmsmac: fix memory leak in wlc_phy_attach_lcnphy
rtl8xxxu: prevent potential memory leak
Fix use after free in get_capset_info callback.
tty: ipwireless: fix error handling
ipvs: Fix uninit-value in do_ip_vs_set_ctl()
reiserfs: Fix memory leak in reiserfs_parse_options()
brcm80211: fix possible memleak in brcmf_proto_msgbuf_attach
usb: core: Solve race condition in anchor cleanup functions
ath10k: check idx validity in __ath10k_htt_rx_ring_fill_n()
net: korina: cast KSEG0 address to pointer in kfree
usb: cdc-acm: add quirk to blacklist ETAS ES58X devices
USB: cdc-wdm: Make wdm_flush() interruptible and add wdm_fsync().
Linux 4.4.241
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I996be1c1248d000431eb6f5c53472dbafba8bd9c
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commit 7f1e541fc8d57a143dd5df1d0a1276046e08c083 upstream.
Sometimes we know that it's safe to do potentially out-of-bounds access
because we know it won't cross a page boundary. Still, KASAN will
report this as a bug.
Add read_word_at_a_time() function which is supposed to be used in such
cases. In read_word_at_a_time() KASAN performs relaxed check - only the
first byte of access is validated.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[bwh: Backported to 4.4: adjust context]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit bdb5ac801af3d81d36732c2f640d6a1d3df83826 upstream.
Instead of having two identical __read_once_size_nocheck() functions
with different attributes, consolidate all the difference in new macro
__no_kasan_or_inline and use it. No functional changes.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 64f8ebaf115bcddc4aaa902f981c57ba6506bc42 upstream.
Memory access coded in an assembly won't be seen by KASAN as a compiler
can instrument only C code. Add kasan_check_[read,write]() API which is
going to be used to check a certain memory range.
Link: http://lkml.kernel.org/r/1462538722-1574-3-git-send-email-aryabinin@virtuozzo.com
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[bwh: Backported to 4.4: drop change in MAINTAINERS]
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.239
gpio: tc35894: fix up tc35894 interrupt configuration
Input: i8042 - add nopnp quirk for Acer Aspire 5 A515
drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
net: dec: de2104x: Increase receive ring size for Tulip
rndis_host: increase sleep time in the query-response loop
drivers/net/wan/lapbether: Make skb->protocol consistent with the header
drivers/net/wan/hdlc: Set skb->protocol before transmitting
nfs: Fix security label length not being reset
clk: samsung: exynos4: mark 'chipid' clock as CLK_IGNORE_UNUSED
iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()
i2c: cpm: Fix i2c_ram structure
epoll: do not insert into poll queues until all sanity checks are done
epoll: replace ->visited/visited_list with generation count
epoll: EPOLL_CTL_ADD: close the race in decision to take fast path
ep_create_wakeup_source(): dentry name can change under you...
netfilter: ctnetlink: add a range check for l3/l4 protonum
fbdev, newport_con: Move FONT_EXTRA_WORDS macros into linux/font.h
Fonts: Support FONT_EXTRA_WORDS macros for built-in fonts
Revert "ravb: Fixed to be able to unload modules"
fbcon: Fix global-out-of-bounds read in fbcon_get_font()
net: wireless: nl80211: fix out-of-bounds access in nl80211_del_key()
usermodehelper: reset umask to default before executing user process
platform/x86: thinkpad_acpi: initialize tp_nvram_state variable
platform/x86: thinkpad_acpi: re-initialize ACPI buffer size when reuse
driver core: Fix probe_count imbalance in really_probe()
perf top: Fix stdio interface input handling with glibc 2.28+
sctp: fix sctp_auth_init_hmacs() error path
team: set dev->needed_headroom in team_setup_by_port()
net: team: fix memory leak in __team_options_register
mtd: nand: Provide nand_cleanup() function to free NAND related resources
xfrm: clone XFRMA_REPLAY_ESN_VAL in xfrm_do_migrate
xfrm: clone whole liftime_cur structure in xfrm_do_migrate
net: stmmac: removed enabling eee in EEE set callback
xfrm: Use correct address family in xfrm_state_find
bonding: set dev->needed_headroom in bond_setup_by_slave()
rxrpc: Fix rxkad token xdr encoding
rxrpc: Downgrade the BUG() for unsupported token type in rxrpc_read()
rxrpc: Fix server keyring leak
net: usb: rtl8150: set random MAC address when set_ethernet_addr() fails
Linux 4.4.239
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iac33b64c570b076bdc997d9778628d2ffbc3fef0
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[ Upstream commit d44154f969a44269a9288c274c1c2fd9e85df8a5 ]
Provide a nand_cleanup() function to free all nand related resources
without unregistering the mtd device.
This should allow drivers to call mtd_device_unregister() and handle
its return value and still being able to cleanup all nand related
resources.
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Daniel Walter <dwalter@sigma-star.at>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 6735b4632def0640dbdf4eb9f99816aca18c4f16 upstream.
syzbot has reported an issue in the framebuffer layer, where a malicious
user may overflow our built-in font data buffers.
In order to perform a reliable range check, subsystems need to know
`FONTDATAMAX` for each built-in font. Unfortunately, our font descriptor,
`struct console_font` does not contain `FONTDATAMAX`, and is part of the
UAPI, making it infeasible to modify it.
For user-provided fonts, the framebuffer layer resolves this issue by
reserving four extra words at the beginning of data buffers. Later,
whenever a function needs to access them, it simply uses the following
macros:
Recently we have gathered all the above macros to <linux/font.h>. Let us
do the same thing for built-in fonts, prepend four extra words (including
`FONTDATAMAX`) to their data buffers, so that subsystems can use these
macros for all fonts, no matter built-in or user-provided.
This patch depends on patch "fbdev, newport_con: Move FONT_EXTRA_WORDS
macros into linux/font.h".
Cc: stable@vger.kernel.org
Link: https://syzkaller.appspot.com/bug?id=08b8be45afea11888776f897895aef9ad1c3ecfd
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/ef18af00c35fb3cc826048a5f70924ed6ddce95b.1600953813.git.yepeilin.cs@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit bb0890b4cd7f8203e3aa99c6d0f062d6acdaad27 upstream.
drivers/video/console/newport_con.c is borrowing FONT_EXTRA_WORDS macros
from drivers/video/fbdev/core/fbcon.h. To keep things simple, move all
definitions into <linux/font.h>.
Since newport_con now uses four extra words, initialize the fourth word in
newport_set_font() properly.
Cc: stable@vger.kernel.org
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/7fb8bc9b0abc676ada6b7ac0e0bd443499357267.1600953813.git.yepeilin.cs@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.238
af_key: pfkey_dump needs parameter validation
KVM: fix memory leak in kvm_io_bus_unregister_dev()
kprobes: fix kill kprobe which has been marked as gone
ftrace: Setup correct FTRACE_FL_REGS flags for module
RDMA/ucma: ucma_context reference leak in error path
mtd: Fix comparison in map_word_andequal()
hdlc_ppp: add range checks in ppp_cp_parse_cr()
tipc: use skb_unshare() instead in tipc_buf_append()
net: add __must_check to skb_put_padto()
ip: fix tos reflection in ack and reset packets
serial: 8250: Avoid error message on reprobe
scsi: aacraid: fix illegal IO beyond last LBA
m68k: q40: Fix info-leak in rtc_ioctl
gma/gma500: fix a memory disclosure bug due to uninitialized bytes
ASoC: kirkwood: fix IRQ error handling
PM / devfreq: tegra30: Fix integer overflow on CPU's freq max out
mtd: cfi_cmdset_0002: don't free cfi->cfiq in error path of cfi_amdstd_setup()
mfd: mfd-core: Protect against NULL call-back function pointer
tracing: Adding NULL checks for trace_array descriptor pointer
bcache: fix a lost wake-up problem caused by mca_cannibalize_lock
xfs: fix attr leaf header freemap.size underflow
kernel/sys.c: avoid copying possible padding bytes in copy_to_user
neigh_stat_seq_next() should increase position index
rt_cpu_seq_next should increase position index
seqlock: Require WRITE_ONCE surrounding raw_seqcount_barrier
ACPI: EC: Reference count query handlers under lock
tracing: Set kernel_stack's caller size properly
ar5523: Add USB ID of SMCWUSBT-G2 wireless adapter
Bluetooth: Fix refcount use-after-free issue
mm: pagewalk: fix termination condition in walk_pte_range()
Bluetooth: prefetch channel before killing sock
skbuff: fix a data race in skb_queue_len()
audit: CONFIG_CHANGE don't log internal bookkeeping as an event
selinux: sel_avc_get_stat_idx should increase position index
scsi: lpfc: Fix RQ buffer leakage when no IOCBs available
drm/omap: fix possible object reference leak
dmaengine: tegra-apb: Prevent race conditions on channel's freeing
media: go7007: Fix URB type for interrupt handling
Bluetooth: guard against controllers sending zero'd events
drm/amdgpu: increase atombios cmd timeout
Bluetooth: L2CAP: handle l2cap config request during open state
media: tda10071: fix unsigned sign extension overflow
tpm: ibmvtpm: Wait for buffer to be set before proceeding
tracing: Use address-of operator on section symbols
serial: 8250_omap: Fix sleeping function called from invalid context during probe
SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()'
ubifs: Fix out-of-bounds memory access caused by abnormal value of node_len
ALSA: usb-audio: Fix case when USB MIDI interface has more than one extra endpoint descriptor
mm/filemap.c: clear page error before actual read
mm/mmap.c: initialize align_offset explicitly for vm_unmapped_area
KVM: Remove CREATE_IRQCHIP/SET_PIT2 race
bdev: Reduce time holding bd_mutex in sync in blkdev_close()
drivers: char: tlclk.c: Avoid data race between init and interrupt handler
dt-bindings: sound: wm8994: Correct required supplies based on actual implementaion
atm: fix a memory leak of vcc->user_back
phy: samsung: s5pv210-usb2: Add delay after reset
Bluetooth: Handle Inquiry Cancel error after Inquiry Complete
USB: EHCI: ehci-mv: fix error handling in mv_ehci_probe()
tty: serial: samsung: Correct clock selection logic
ALSA: hda: Fix potential race in unsol event handler
fuse: don't check refcount after stealing page
USB: EHCI: ehci-mv: fix less than zero comparison of an unsigned int
e1000: Do not perform reset in reset_task if we are already down
printk: handle blank console arguments passed in.
vfio/pci: fix memory leaks of eventfd ctx
perf kcore_copy: Fix module map when there are no modules loaded
mtd: rawnand: omap_elm: Fix runtime PM imbalance on error
ceph: fix potential race in ceph_check_caps
mtd: parser: cmdline: Support MTD names containing one or more colons
x86/speculation/mds: Mark mds_user_clear_cpu_buffers() __always_inline
vfio/pci: Clear error and request eventfd ctx after releasing
vfio/pci: fix racy on error and request eventfd ctx
s390/init: add missing __init annotations
mwifiex: Increase AES key storage size to 256 bits
batman-adv: bla: fix type misuse for backbone_gw hash indexing
atm: eni: fix the missed pci_disable_device() for eni_init_one()
batman-adv: mcast/TT: fix wrongly dropped or rerouted packets
ALSA: asihpi: fix iounmap in error handler
MIPS: Add the missing 'CPU_1074K' into __get_cpu_type()
tty: vt, consw->con_scrolldelta cleanup
kprobes: Fix to check probe enabled before disarm_kprobe_ftrace()
lib/string.c: implement stpcpy
ata: define AC_ERR_OK
ata: make qc_prep return ata_completion_errors
ata: sata_mv, avoid trigerrable BUG_ON
Linux 4.4.238
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Icad47fa33334613e04af31218b3db45ddff7872a
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commit 95364f36701e62dd50eee91e1303187fd1a9f567 upstream.
In case a driver wants to return an error from qc_prep, return enum
ata_completion_errors. sata_mv is one of those drivers -- see the next
patch. Other drivers return the newly defined AC_ERR_OK.
[v2] use enum ata_completion_errors and AC_ERR_OK.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 25937580a5065d6fbd92d9c8ebd47145ad80052e upstream.
Since we will return enum ata_completion_errors from qc_prep in the next
patch, let's define AC_ERR_OK to mark the OK status.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 86b18aaa2b5b5bb48e609cd591b3d2d0fdbe0442 ]
sk_buff.qlen can be accessed concurrently as noticed by KCSAN,
BUG: KCSAN: data-race in __skb_try_recv_from_queue / unix_dgram_sendmsg
read to 0xffff8a1b1d8a81c0 of 4 bytes by task 5371 on cpu 96:
unix_dgram_sendmsg+0x9a9/0xb70 include/linux/skbuff.h:1821
net/unix/af_unix.c:1761
____sys_sendmsg+0x33e/0x370
___sys_sendmsg+0xa6/0xf0
__sys_sendmsg+0x69/0xf0
__x64_sys_sendmsg+0x51/0x70
do_syscall_64+0x91/0xb47
entry_SYSCALL_64_after_hwframe+0x49/0xbe
write to 0xffff8a1b1d8a81c0 of 4 bytes by task 1 on cpu 99:
__skb_try_recv_from_queue+0x327/0x410 include/linux/skbuff.h:2029
__skb_try_recv_datagram+0xbe/0x220
unix_dgram_recvmsg+0xee/0x850
____sys_recvmsg+0x1fb/0x210
___sys_recvmsg+0xa2/0xf0
__sys_recvmsg+0x66/0xf0
__x64_sys_recvmsg+0x51/0x70
do_syscall_64+0x91/0xb47
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Since only the read is operating as lockless, it could introduce a logic
bug in unix_recvq_full() due to the load tearing. Fix it by adding
a lockless variant of skb_queue_len() and unix_recvq_full() where
READ_ONCE() is on the read while WRITE_ONCE() is on the write similar to
the commit d7d16a89350a ("net: add skb_queue_empty_lockless()").
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit bf07132f96d426bcbf2098227fb680915cf44498 ]
This patch proposes to require marked atomic accesses surrounding
raw_write_seqcount_barrier. We reason that otherwise there is no way to
guarantee propagation nor atomicity of writes before/after the barrier
[1]. For example, consider the compiler tears stores either before or
after the barrier; in this case, readers may observe a partial value,
and because readers are unaware that writes are going on (writes are not
in a seq-writer critical section), will complete the seq-reader critical
section while having observed some partial state.
[1] https://lwn.net/Articles/793253/
This came up when designing and implementing KCSAN, because KCSAN would
flag these accesses as data-races. After careful analysis, our reasoning
as above led us to conclude that the best thing to do is to propose an
amendment to the raw_seqcount_barrier usage.
Signed-off-by: Marco Elver <elver@google.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 4a009cb04aeca0de60b73f37b102573354214b52 ]
skb_put_padto() and __skb_put_padto() callers
must check return values or risk use-after-free.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ea739a287f4f16d6250bea779a1026ead79695f2 upstream.
Commit 9e343e87d2c4 ("mtd: cfi: convert inline functions to macros")
changed map_word_andequal() into a macro, but also changed the right
hand side of the comparison from val3 to val2. Change it back to use
val3 on the right hand side.
Thankfully this did not cause a regression because all callers
currently pass the same argument for val2 and val3.
Fixes: 9e343e87d2c4 ("mtd: cfi: convert inline functions to macros")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Nobuhiro Iwamatsu (CIP) <noburhio1.nobuhiro@toshiba.co.jp>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Changes in 4.4.237
ARM: dts: socfpga: fix register entry for timer3 on Arria10
scsi: libsas: Set data_dir as DMA_NONE if libata marks qc as NODATA
drivers/net/wan/lapbether: Added needed_tailroom
firestream: Fix memleak in fs_open
drivers/net/wan/lapbether: Set network_header before transmitting
xfs: initialize the shortform attr header padding entry
drivers/net/wan/hdlc_cisco: Add hard_header_len
ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled
gcov: Disable gcov build with GCC 10
iio: adc: mcp3422: fix locking scope
iio: adc: mcp3422: fix locking on error path
iio:light:ltr501 Fix timestamp alignment issue.
iio:accel:bmc150-accel: Fix timestamp alignment and prevent data leak.
iio:accel:mma8452: Fix timestamp alignment and prevent data leak.
USB: core: add helpers to retrieve endpoints
staging: wlan-ng: fix out of bounds read in prism2sta_probe_usb()
btrfs: fix wrong address when faulting in pages in the search ioctl
scsi: target: iscsi: Fix hang in iscsit_access_np() when getting tpg->np_login_sem
rbd: require global CAP_SYS_ADMIN for mapping and unmapping
fbcon: remove soft scrollback code
fbcon: remove now unusued 'softback_lines' cursor() argument
vgacon: remove software scrollback support
KVM: VMX: Don't freeze guest when event delivery causes an APIC-access exit
video: fbdev: fix OOB read in vga_8planes_imageblit()
USB: serial: ftdi_sio: add IDs for Xsens Mti USB converter
USB: serial: option: add support for SIM7070/SIM7080/SIM7090 modules
usb: Fix out of sync data toggle if a configured device is reconfigured
gcov: add support for GCC 10.1
NFSv4.1 handle ERR_DELAY error reclaiming locking state on delegation recall
scsi: pm8001: Fix memleak in pm8001_exec_internal_task_abort
scsi: lpfc: Fix FLOGI/PLOGI receive race condition in pt2pt discovery
SUNRPC: stop printk reading past end of string
rapidio: Replace 'select' DMAENGINES 'with depends on'
i2c: algo: pca: Reapply i2c bus settings after reset
MIPS: SNI: Fix MIPS_L1_CACHE_SHIFT
perf test: Free formats for perf pmu parse test
fbcon: Fix user font detection test at fbcon_resize().
MIPS: SNI: Fix spurious interrupts
USB: quirks: Add USB_QUIRK_IGNORE_REMOTE_WAKEUP quirk for BYD zhaoxin notebook
USB: UAS: fix disconnect by unplugging a hub
usblp: fix race between disconnect() and read()
Input: i8042 - add Entroware Proteus EL07R4 to nomux and reset lists
serial: 8250_pci: Add Realtek 816a and 816b
ehci-hcd: Move include to keep CRC stable
powerpc/dma: Fix dma_map_ops::get_required_mask
x86/defconfig: Enable CONFIG_USB_XHCI_HCD=y
Linux 4.4.237
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If3f7701823084090849a6866ba1e52a0276c9621
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[ Upstream commit 0a355aeb24081e4538d4d424cd189f16c0bbd983 ]
If something goes wrong (such as the SCL being stuck low) then we need
to reset the PCA chip. The issue with this is that on reset we lose all
config settings and the chip ends up in a disabled state which results
in a lock up/high CPU usage. We need to re-apply any configuration that
had previously been set and re-enable the chip.
Signed-off-by: Evan Nimmo <evan.nimmo@alliedtelesis.co.nz>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 66a359390e7e34f9a4c489467234b107b3d76169 upstream.
Many USB drivers iterate over the available endpoints to find required
endpoints of a specific type and direction. Typically the endpoints are
required for proper function and a missing endpoint should abort probe.
To facilitate code reuse, add a helper to retrieve common endpoints
(bulk or interrupt, in or out) and four wrappers to find a single
endpoint.
Note that the helpers are marked as __must_check to serve as a reminder
to always verify that all expected endpoints are indeed present. This
also means that any optional endpoints, typically need to be looked up
through separate calls.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.236
HID: core: Correctly handle ReportSize being zero
HID: core: Sanitize event code and type when mapping input
perf record/stat: Explicitly call out event modifiers in the documentation
mm, page_alloc: remove unnecessary variable from free_pcppages_bulk
hwmon: (applesmc) check status earlier.
ceph: don't allow setlease on cephfs
s390: don't trace preemption in percpu macros
xen/xenbus: Fix granting of vmalloc'd memory
dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling
batman-adv: Avoid uninitialized chaddr when handling DHCP
batman-adv: bla: use netif_rx_ni when not in interrupt context
dmaengine: at_hdmac: check return value of of_find_device_by_node() in at_dma_xlate()
netfilter: nf_tables: incorrect enum nft_list_attributes definition
netfilter: nf_tables: fix destination register zeroing
dmaengine: pl330: Fix burst length if burst size is smaller than bus width
bnxt_en: Check for zero dir entries in NVRAM.
fix regression in "epoll: Keep a reference on files added to the check list"
tg3: Fix soft lockup when tg3_reset_task() fails.
iommu/vt-d: Serialize IOMMU GCMD register modifications
thermal: ti-soc-thermal: Fix bogus thermal shutdowns for omap4430
include/linux/log2.h: add missing () around n in roundup_pow_of_two()
btrfs: drop path before adding new uuid tree entry
btrfs: Remove redundant extent_buffer_get in get_old_root
btrfs: Remove extraneous extent_buffer_get from tree_mod_log_rewind
btrfs: set the lockdep class for log tree extent buffers
uaccess: Add non-pagefault user-space read functions
uaccess: Add non-pagefault user-space write function
btrfs: fix potential deadlock in the search ioctl
net: qmi_wwan: MDM9x30 specific power management
net: qmi_wwan: support "raw IP" mode
net: qmi_wwan: should hold RTNL while changing netdev type
net: qmi_wwan: ignore bogus CDC Union descriptors
Add Dell Wireless 5809e Gobi 4G HSPA+ Mobile Broadband Card (rev3) to qmi_wwan
qmi_wwan: Added support for Gemalto's Cinterion PHxx WWAN interface
qmi_wwan: add support for Quectel EC21 and EC25
NET: usb: qmi_wwan: add support for Telit LE922A PID 0x1040
drivers: net: usb: qmi_wwan: add QMI_QUIRK_SET_DTR for Telit PID 0x1201
usb: qmi_wwan: add D-Link DWM-222 A2 device ID
net: usb: qmi_wwan: add Telit ME910 support
net: usb: qmi_wwan: add Telit 0x1050 composition
ALSA: ca0106: fix error code handling
ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check
dm cache metadata: Avoid returning cmd->bm wild pointer on error
dm thin metadata: Avoid returning cmd->bm wild pointer on error
net: refactor bind_bucket fastreuse into helper
net: initialize fastreuse on inet_inherit_port
checkpatch: fix the usage of capture group ( ... )
mm/hugetlb: fix a race between hugetlb sysctl handlers
cfg80211: regulatory: reject invalid hints
net: usb: Fix uninit-was-stored issue in asix_read_phy_addr()
ALSA: firewire-digi00x: add support for console models of Digi00x series
ALSA: firewire-digi00x: exclude Avid Adrenaline from detection
ALSA; firewire-tascam: exclude Tascam FE-8 from detection
fs/affs: use octal for permissions
affs: fix basic permission bits to actually work
ravb: Fixed to be able to unload modules
net: ethernet: mlx4: Fix memory allocation in mlx4_buddy_init()
bnxt_en: Failure to update PHY is not fatal condition.
bnxt: don't enable NAPI until rings are ready
net: usb: dm9601: Add USB ID of Keenetic Plus DSL
sctp: not disable bh in the whole sctp_get_port_local()
net: disable netpoll on fresh napis
Linux 4.4.236
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I45da24ccdf864c8774a1265a5d81685e04add060
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[ Upstream commit 1d1585ca0f48fe7ed95c3571f3e4a82b2b5045dc ]
Commit 3d7081822f7f ("uaccess: Add non-pagefault user-space read functions")
missed to add probe write function, therefore factor out a probe_write_common()
helper with most logic of probe_kernel_write() except setting KERNEL_DS, and
add a new probe_user_write() helper so it can be used from BPF side.
Again, on some archs, the user address space and kernel address space can
co-exist and be overlapping, so in such case, setting KERNEL_DS would mean
that the given address is treated as being in kernel address space.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/bpf/9df2542e68141bfa3addde631441ee45503856a8.1572649915.git.daniel@iogearbox.net
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 3d7081822f7f9eab867d9bcc8fd635208ec438e0 ]
Add probe_user_read(), strncpy_from_unsafe_user() and
strnlen_unsafe_user() which allows caller to access user-space
in IRQ context.
Current probe_kernel_read() and strncpy_from_unsafe() are
not available for user-space memory, because it sets
KERNEL_DS while accessing data. On some arch, user address
space and kernel address space can be co-exist, but others
can not. In that case, setting KERNEL_DS means given
address is treated as a kernel address space.
Also strnlen_user() is only available from user context since
it can sleep if pagefault is enabled.
To access user-space memory without pagefault, we need
these new functions which sets USER_DS while accessing
the data.
Link: http://lkml.kernel.org/r/155789869802.26965.4940338412595759063.stgit@devnote2
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 428fc0aff4e59399ec719ffcc1f7a5d29a4ee476 ]
Otherwise gcc generates warnings if the expression is complicated.
Fixes: 312a0c170945 ("[PATCH] LOG2: Alter roundup_pow_of_two() so that it can use a ilog2() on a constant")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/0-v1-8a2697e3c003+41165-log_brackets_jgg@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 35556bed836f8dc07ac55f69c8d17dce3e7f0e25 upstream.
When calling into hid_map_usage(), the passed event code is
blindly stored as is, even if it doesn't fit in the associated bitmap.
This event code can come from a variety of sources, including devices
masquerading as input devices, only a bit more "programmable".
Instead of taking the event code at face value, check that it actually
fits the corresponding bitmap, and if it doesn't:
- spit out a warning so that we know which device is acting up
- NULLify the bitmap pointer so that we catch unexpected uses
Code paths that can make use of untrusted inputs can now check
that the mapping was indeed correct and bail out if not.
Cc: stable@vger.kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.235
net: Fix potential wrong skb->protocol in skb_vlan_untag()
tipc: fix uninit skb->data in tipc_nl_compat_dumpit()
ipvlan: fix device features
bonding: show saner speed for broadcast mode
bonding: fix a potential double-unregister
powerpc/pseries: Do not initiate shutdown when system is running on UPS
ALSA: pci: delete repeated words in comments
ASoC: tegra: Fix reference count leaks.
media: pci: ttpci: av7110: fix possible buffer overflow caused by bad DMA value in debiirq()
scsi: target: tcmu: Fix crash on ARM during cmd completion
drm/amdkfd: Fix reference count leaks.
drm/radeon: fix multiple reference count leak
drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms
drm/amd/display: fix ref count leak in amdgpu_drm_ioctl
drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config
drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails
scsi: lpfc: Fix shost refcount mismatch when deleting vport
selftests/powerpc: Purge extra count_pmc() calls of ebb selftests
PCI: Fix pci_create_slot() reference count leak
rtlwifi: rtl8192cu: Prevent leaking urb
mips/vdso: Fix resource leaks in genvdso.c
drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open
drm/nouveau: Fix reference count leak in nouveau_connector_detect
locking/lockdep: Fix overflow in presentation of average lock-time
scsi: iscsi: Do not put host in iscsi_set_flashnode_param()
ceph: fix potential mdsc use-after-free crash
scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del()
EDAC/ie31200: Fallback if host bridge device is already initialized
media: davinci: vpif_capture: fix potential double free
powerpc/spufs: add CONFIG_COREDUMP dependency
USB: sisusbvga: Fix a potential UB casued by left shifting a negative value
Revert "ath10k: fix DMA related firmware crashes on multiple devices"
i2c: rcar: in slave mode, clear NACK earlier
jbd2: make sure jh have b_transaction set in refile/unfile_buffer
jbd2: abort journal if free a async write error metadata buffer
s390/cio: add cond_resched() in the slow_eval_known_fn() loop
scsi: ufs: Fix possible infinite loop in ufshcd_hold
net: gianfar: Add of_node_put() before goto statement
fbcon: prevent user font height or width change from causing potential out-of-bounds access
USB: lvtest: return proper error code in probe
vt: defer kfree() of vc_screenbuf in vc_do_resize()
vt_ioctl: change VT_RESIZEX ioctl to check for error return from vc_resize()
serial: samsung: Removes the IRQ not found warning
serial: pl011: Don't leak amba_ports entry on driver register error
serial: 8250: change lock order in serial8250_do_startup()
writeback: Protect inode->i_io_list with inode->i_lock
writeback: Avoid skipping inode writeback
writeback: Fix sync livelock due to b_dirty_time processing
XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.
xhci: Do warm-reset when both CAS and XDEV_RESUME are set
PM: sleep: core: Fix the handling of pending runtime resume requests
device property: Fix the secondary firmware node handling in set_primary_fwnode()
USB: yurex: Fix bad gfp argument
usb: uas: Add quirk for PNY Pro Elite
USB: quirks: Add no-lpm quirk for another Raydium touchscreen
USB: Ignore UAS for JMicron JMS567 ATA/ATAPI Bridge
usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe()
usb: storage: Add unusual_uas entry for Sony PSZ drives
btrfs: check the right error variable in btrfs_del_dir_entries_in_log
HID: hiddev: Fix slab-out-of-bounds write in hiddev_ioctl_usage()
ALSA: usb-audio: Update documentation comment for MS2109 quirk
Linux 4.4.235
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ic94d552561168bb9f44bc1350806425cbc35f743
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commit 5afced3bf28100d81fb2fe7e98918632a08feaf5 upstream.
Inode's i_io_list list head is used to attach inode to several different
lists - wb->{b_dirty, b_dirty_time, b_io, b_more_io}. When flush worker
prepares a list of inodes to writeback e.g. for sync(2), it moves inodes
to b_io list. Thus it is critical for sync(2) data integrity guarantees
that inode is not requeued to any other writeback list when inode is
queued for processing by flush worker. That's the reason why
writeback_single_inode() does not touch i_io_list (unless the inode is
completely clean) and why __mark_inode_dirty() does not touch i_io_list
if I_SYNC flag is set.
However there are two flaws in the current logic:
1) When inode has only I_DIRTY_TIME set but it is already queued in b_io
list due to sync(2), concurrent __mark_inode_dirty(inode, I_DIRTY_SYNC)
can still move inode back to b_dirty list resulting in skipping
writeback of inode time stamps during sync(2).
2) When inode is on b_dirty_time list and writeback_single_inode() races
with __mark_inode_dirty() like:
writeback_single_inode() __mark_inode_dirty(inode, I_DIRTY_PAGES)
inode->i_state |= I_SYNC
__writeback_single_inode()
inode->i_state |= I_DIRTY_PAGES;
if (inode->i_state & I_SYNC)
bail
if (!(inode->i_state & I_DIRTY_ALL))
- not true so nothing done
We end up with I_DIRTY_PAGES inode on b_dirty_time list and thus
standard background writeback will not writeback this inode leading to
possible dirty throttling stalls etc. (thanks to Martijn Coenen for this
analysis).
Fix these problems by tracking whether inode is queued in b_io or
b_more_io lists in a new I_SYNC_QUEUED flag. When this flag is set, we
know flush worker has queued inode and we should not touch i_io_list.
On the other hand we also know that once flush worker is done with the
inode it will requeue the inode to appropriate dirty list. When
I_SYNC_QUEUED is not set, __mark_inode_dirty() can (and must) move inode
to appropriate dirty list.
Reported-by: Martijn Coenen <maco@android.com>
Reviewed-by: Martijn Coenen <maco@android.com>
Tested-by: Martijn Coenen <maco@android.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Fixes: 0ae45f63d4ef ("vfs: add support for a lazytime mount option")
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.234
drm/imx: imx-ldb: Disable both channels for split mode in enc->disable()
perf probe: Fix memory leakage when the probe point is not found
net/compat: Add missing sock updates for SCM_RIGHTS
watchdog: f71808e_wdt: indicate WDIOF_CARDRESET support in watchdog_info.options
watchdog: f71808e_wdt: remove use of wrong watchdog_info option
coredump: fix race condition between collapse_huge_page() and core dumping
khugepaged: khugepaged_test_exit() check mmget_still_valid()
khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
btrfs: export helpers for subvolume name/id resolution
btrfs: don't show full path of bind mounts in subvol=
romfs: fix uninitialized memory leak in romfs_dev_read()
mm: include CMA pages in lowmem_reserve at boot
mm, page_alloc: fix core hung in free_pcppages_bulk()
ext4: clean up ext4_match() and callers
ext4: fix checking of directory entry validity for inline directories
media: budget-core: Improve exception handling in budget_register()
media: vpss: clean up resources in init
Input: psmouse - add a newline when printing 'proto' by sysfs
m68knommu: fix overwriting of bits in ColdFire V3 cache control
xfs: fix inode quota reservation checks
jffs2: fix UAF problem
scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases
virtio_ring: Avoid loop when vq is broken in virtqueue_poll
xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init
alpha: fix annotation of io{read,write}{16,32}be()
ext4: fix potential negative array index in do_split()
ASoC: intel: Fix memleak in sst_media_open
powerpc: Allow 4224 bytes of stack expansion for the signal frame
epoll: Keep a reference on files added to the check list
do_epoll_ctl(): clean the failure exits up a bit
mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible
xen: don't reschedule in preemption off sections
omapfb: dss: Fix max fclk divider for omap36xx
KVM: arm/arm64: Don't reschedule in unmap_stage2_range()
Linux 4.4.234
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I974097d685afb4d7ecb61a11d8e270d70809f548
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[ Upstream commit 59ea6d06cfa9247b586a695c21f94afa7183af74 ]
When fixing the race conditions between the coredump and the mmap_sem
holders outside the context of the process, we focused on
mmget_not_zero()/get_task_mm() callers in 04f5866e41fb70 ("coredump: fix
race condition between mmget_not_zero()/get_task_mm() and core
dumping"), but those aren't the only cases where the mmap_sem can be
taken outside of the context of the process as Michal Hocko noticed
while backporting that commit to older -stable kernels.
If mmgrab() is called in the context of the process, but then the
mm_count reference is transferred outside the context of the process,
that can also be a problem if the mmap_sem has to be taken for writing
through that mm_count reference.
khugepaged registration calls mmgrab() in the context of the process,
but the mmap_sem for writing is taken later in the context of the
khugepaged kernel thread.
collapse_huge_page() after taking the mmap_sem for writing doesn't
modify any vma, so it's not obvious that it could cause a problem to the
coredump, but it happens to modify the pmd in a way that breaks an
invariant that pmd_trans_huge_lock() relies upon. collapse_huge_page()
needs the mmap_sem for writing just to block concurrent page faults that
call pmd_trans_huge_lock().
Specifically the invariant that "!pmd_trans_huge()" cannot become a
"pmd_trans_huge()" doesn't hold while collapse_huge_page() runs.
The coredump will call __get_user_pages() without mmap_sem for reading,
which eventually can invoke a lockless page fault which will need a
functional pmd_trans_huge_lock().
So collapse_huge_page() needs to use mmget_still_valid() to check it's
not running concurrently with the coredump... as long as the coredump
can invoke page faults without holding the mmap_sem for reading.
This has "Fixes: khugepaged" to facilitate backporting, but in my view
it's more a bug in the coredump code that will eventually have to be
rewritten to stop invoking page faults without the mmap_sem for reading.
So the long term plan is still to drop all mmget_still_valid().
Link: http://lkml.kernel.org/r/20190607161558.32104-1-aarcange@redhat.com
Fixes: ba76149f47d8 ("thp: khugepaged")
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: Michal Hocko <mhocko@suse.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Changes in 4.4.233
xfs: don't call xfs_da_shrink_inode with NULL bp
net: phy: mdio-bcm-unimac: fix potential NULL dereference in unimac_mdio_probe()
media: rc: prevent memory leak in cx23888_ir_probe
ath9k_htc: release allocated buffer if timed out
ath9k: release allocated buffer if timed out
nfs: Move call to security_inode_listsecurity into nfs_listxattr
PCI/ASPM: Disable ASPM on ASMedia ASM1083/1085 PCIe-to-PCI bridge
drm/amdgpu: Prevent kernel-infoleak in amdgpu_info_ioctl()
drm: hold gem reference until object is no longer accessed
f2fs: check memory boundary by insane namelen
f2fs: check if file namelen exceeds max value
ARM: 8986/1: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints
fbdev: Detect integer underflow at "struct fbcon_ops"->clear_margins.
rds: Prevent kernel-infoleak in rds_notify_queue_get()
net/x25: Fix x25_neigh refcnt leak when x25 disconnect
net/x25: Fix null-ptr-deref in x25_disconnect
sh: Fix validation of system call number
net: lan78xx: add missing endpoint sanity check
net: lan78xx: fix transfer-buffer memory leak
mlxsw: core: Increase scope of RCU read-side critical section
mac80211: mesh: Free ie data when leaving mesh
nfc: s3fwrn5: add missing release on skb in s3fwrn5_recv_frame
net: ethernet: ravb: exit if re-initialization fails in tx timeout
Revert "i2c: cadence: Fix the hold bit setting"
xen-netfront: fix potential deadlock in xennet_remove()
x86/i8259: Use printk_deferred() to prevent deadlock
random32: update the net random state on interrupt and activity
ARM: percpu.h: fix build error
random: fix circular include dependency on arm64 after addition of percpu.h
random32: remove net_rand_state from the latent entropy gcc plugin
random32: move the pseudo-random 32-bit definitions to prandom.h
ext4: fix direct I/O read error
USB: serial: qcserial: add EM7305 QDL product ID
ALSA: seq: oss: Serialize ioctls
Bluetooth: Fix slab-out-of-bounds read in hci_extended_inquiry_result_evt()
Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt()
Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_with_rssi_evt()
vgacon: Fix for missing check in scrollback handling
mtd: properly check all write ioctls for permissions
net/9p: validate fds in p9_fd_open
drm/nouveau/fbcon: fix module unload when fbcon init has failed for some reason
cfg80211: check vendor command doit pointer before use
igb: reinit_locked() should be called with rtnl_lock
atm: fix atm_dev refcnt leaks in atmtcp_remove_persistent
tools lib traceevent: Fix memory leak in process_dynamic_array_len
binder: Prevent context manager from incrementing ref 0
ipv4: Silence suspicious RCU usage warning
ipv6: fix memory leaks on IPV6_ADDRFORM path
Revert "vxlan: fix tos value before xmit"
net: lan78xx: replace bogus endpoint lookup
usb: hso: check for return value in hso_serial_common_create()
vxlan: Ensure FDB dump is performed under RCU
Smack: fix use-after-free in smk_write_relabel_self()
tracepoint: Mark __tracepoint_string's __used
udp: drop corrupt packets earlier to avoid data corruption
gpio: fix oops resulting from calling of_get_named_gpio(NULL, ...)
EDAC: Fix reference count leaks
m68k: mac: Don't send IOP message until channel is idle
m68k: mac: Fix IOP status/control register writes
ARM: at91: pm: add missing put_device() call in at91_pm_sram_init()
ARM: socfpga: PM: add missing put_device() call in socfpga_setup_ocram_self_refresh()
drm/tilcdc: fix leak & null ref in panel_connector_get_modes
Bluetooth: add a mutex lock to avoid UAF in do_enale_set
fs/btrfs: Add cond_resched() for try_release_extent_mapping() stalls
drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync
video: fbdev: neofb: fix memory leak in neo_scan_monitor()
drm/nouveau: fix multiple instances of reference count leaks
drm/debugfs: fix plain echo to connector "force" attribute
mm/mmap.c: Add cond_resched() for exit_mmap() CPU stalls
brcmfmac: To fix Bss Info flag definition Bug
iwlegacy: Check the return value of pcie_capability_read_*()
usb: gadget: net2280: fix memory leak on probe error handling paths
bdc: Fix bug causing crash after multiple disconnects
dyndbg: fix a BUG_ON in ddebug_describe_flags
bcache: fix super block seq numbers comparision in register_cache_set()
ACPICA: Do not increment operation_region reference counts for field units
agp/intel: Fix a memory leak on module initialisation failure
video: fbdev: sm712fb: fix an issue about iounmap for a wrong address
console: newport_con: fix an issue about leak related system resources
iio: improve IIO_CONCENTRATION channel type description
leds: lm355x: avoid enum conversion warning
media: omap3isp: Add missed v4l2_ctrl_handler_free() for preview_init_entities()
scsi: cumana_2: Fix different dev_id between request_irq() and free_irq()
cxl: Fix kobject memleak
drm/radeon: fix array out-of-bounds read and write issues
scsi: powertec: Fix different dev_id between request_irq() and free_irq()
scsi: eesox: Fix different dev_id between request_irq() and free_irq()
media: firewire: Using uninitialized values in node_probe()
media: exynos4-is: Add missed check for pinctrl_lookup_state()
drm: panel: simple: Fix bpc for LG LB070WV8 panel
mwifiex: Prevent memory corruption handling keys
powerpc/vdso: Fix vdso cpu truncation
PCI/ASPM: Add missing newline in sysfs 'policy'
usb: dwc2: Fix error path in gadget registration
scsi: mesh: Fix panic after host or bus reset
Smack: fix another vsscanf out of bounds
Smack: prevent underflow in smk_set_cipso()
power: supply: check if calc_soc succeeded in pm860x_init_battery
s390/qeth: don't process empty bridge port events
wl1251: fix always return 0 error
net: spider_net: Fix the size used in a 'dma_free_coherent()' call
dlm: Fix kobject memleak
pinctrl-single: fix pcs_parse_pinconf() return value
drivers/net/wan/lapbether: Added needed_headroom and a skb->len check
net/nfc/rawsock.c: add CAP_NET_RAW check.
net: Set fput_needed iff FDPUT_FPUT is set
ALSA: usb-audio: Creative USB X-Fi Pro SB1095 volume knob support
ALSA: usb-audio: fix overeager device match for MacroSilicon MS2109
ALSA: usb-audio: add quirk for Pioneer DDJ-RB
crypto: qat - fix double free in qat_uclo_create_batch_init_list
fs/minix: check return value of sb_getblk()
fs/minix: don't allow getting deleted inodes
fs/minix: reject too-large maximum file size
ALSA: usb-audio: work around streaming quirk for MacroSilicon MS2109
9p: Fix memory leak in v9fs_mount
parisc: mask out enable and reserved bits from sba imask
ARM: 8992/1: Fix unwind_frame for clang-built kernels
xen/balloon: fix accounting in alloc_xenballooned_pages error path
xen/balloon: make the balloon wait interruptible
PCI: hotplug: ACPI: Fix context refcounting in acpiphp_grab_context()
btrfs: only search for left_info if there is no right_info in try_merge_free_space
btrfs: fix memory leaks after failure to lookup checksums during inode logging
powerpc: Fix circular dependency between percpu.h and mmu.h
net: ethernet: stmmac: Disable hardware multicast filter
net: stmmac: dwmac1000: provide multicast filter fallback
md/raid5: Fix Force reconstruct-write io stuck in degraded raid5
bcache: allocate meta data pages as compound pages
mac80211: fix misplaced while instead of if
MIPS: CPU#0 is not hotpluggable
ext2: fix missing percpu_counter_inc
ocfs2: change slot number type s16 to u16
kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler
pseries: Fix 64 bit logical memory block panic
USB: serial: ftdi_sio: make process-packet buffer unsigned
USB: serial: ftdi_sio: clean up receive processing
iommu/omap: Check for failure of a call to omap_iommu_dump_ctx
iommu/vt-d: Enforce PASID devTLB field mask
i2c: rcar: slave: only send STOP event when we have been addressed
clk: clk-atlas6: fix return value check in atlas6_clk_init()
Input: sentelic - fix error return when fsp_reg_write fails
drm/vmwgfx: Fix two list_for_each loop exit tests
nfs: Fix getxattr kernel panic and memory overflow
fs/ufs: avoid potential u32 multiplication overflow
mfd: dln2: Run event handler loop under spinlock
ALSA: echoaudio: Fix potential Oops in snd_echo_resume()
sh: landisk: Add missing initialization of sh_io_port_base
ipv6: check skb->protocol before lookup for nexthop
Linux 4.4.233
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iec7dcf69361bcc247996f3de2e20ba64ed0ce3a8
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[ Upstream commit 5f77d6ca5ca74e4b4a5e2e010f7ff50c45dea326 ]
Set proper masks to avoid invalid input spillover to reserved bits.
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Link: https://lore.kernel.org/r/20200724014925.15523-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit f3751ad0116fb6881f2c3c957d66a9327f69cefb upstream.
__tracepoint_string's have their string data stored in .rodata, and an
address to that data stored in the "__tracepoint_str" section. Functions
that refer to those strings refer to the symbol of the address. Compiler
optimization can replace those address references with references
directly to the string data. If the address doesn't appear to have other
uses, then it appears dead to the compiler and is removed. This can
break the /tracing/printk_formats sysfs node which iterates the
addresses stored in the "__tracepoint_str" section.
Like other strings stored in custom sections in this header, mark these
__used to inform the compiler that there are other non-obvious users of
the address, so they should still be emitted.
Link: https://lkml.kernel.org/r/20200730224555.2142154-2-ndesaulniers@google.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: stable@vger.kernel.org
Fixes: 102c9323c35a8 ("tracing: Add __tracepoint_string() to export string pointers")
Reported-by: Tim Murray <timmurray@google.com>
Reported-by: Simon MacMullen <simonmacm@google.com>
Suggested-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c0842fbc1b18c7a044e6ff3e8fa78bfa822c7d1a upstream.
The addition of percpu.h to the list of includes in random.h revealed
some circular dependencies on arm64 and possibly other platforms. This
include was added solely for the pseudo-random definitions, which have
nothing to do with the rest of the definitions in this file but are
still there for legacy reasons.
This patch moves the pseudo-random parts to linux/prandom.h and the
percpu.h include with it, which is now guarded by _LINUX_PRANDOM_H and
protected against recursive inclusion.
A further cleanup step would be to remove this from <linux/random.h>
entirely, and make people who use the prandom infrastructure include
just the new header file. That's a bit of a churn patch, but grepping
for "prandom_" and "next_pseudo_random32" "struct rnd_state" should
catch most users.
But it turns out that that nice cleanup step is fairly painful, because
a _lot_ of code currently seems to depend on the implicit include of
<linux/random.h>, which can currently come in a lot of ways, including
such fairly core headfers as <linux/net.h>.
So the "nice cleanup" part may or may never happen.
Fixes: 1c9df907da83 ("random: fix circular include dependency on arm64 after addition of percpu.h")
Tested-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 83bdc7275e6206f560d247be856bceba3e1ed8f2 upstream.
It turns out that the plugin right now ends up being really unhappy
about the change from 'static' to 'extern' storage that happened in
commit f227e3ec3b5c ("random32: update the net random state on interrupt
and activity").
This is probably a trivial fix for the latent_entropy plugin, but for
now, just remove net_rand_state from the list of things the plugin
worries about.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Emese Revfy <re.emese@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 1c9df907da83812e4f33b59d3d142c864d9da57f upstream.
Daniel Díaz and Kees Cook independently reported that commit
f227e3ec3b5c ("random32: update the net random state on interrupt and
activity") broke arm64 due to a circular dependency on include files
since the addition of percpu.h in random.h.
The correct fix would definitely be to move all the prandom32 stuff out
of random.h but for backporting, a smaller solution is preferred.
This one replaces linux/percpu.h with asm/percpu.h, and this fixes the
problem on x86_64, arm64, arm, and mips. Note that moving percpu.h
around didn't change anything and that removing it entirely broke
differently. When backporting, such options might still be considered
if this patch fails to help.
[ It turns out that an alternate fix seems to be to just remove the
troublesome <asm/pointer_auth.h> remove from the arm64 <asm/smp.h>
that causes the circular dependency.
But we might as well do the whole belt-and-suspenders thing, and
minimize inclusion in <linux/random.h> too. Either will fix the
problem, and both are good changes. - Linus ]
Reported-by: Daniel Díaz <daniel.diaz@linaro.org>
Reported-by: Kees Cook <keescook@chromium.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Fixes: f227e3ec3b5c
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f227e3ec3b5cad859ad15666874405e8c1bbc1d4 upstream.
This modifies the first 32 bits out of the 128 bits of a random CPU's
net_rand_state on interrupt or CPU activity to complicate remote
observations that could lead to guessing the network RNG's internal
state.
Note that depending on some network devices' interrupt rate moderation
or binding, this re-seeding might happen on every packet or even almost
never.
In addition, with NOHZ some CPUs might not even get timer interrupts,
leaving their local state rarely updated, while they are running
networked processes making use of the random state. For this reason, we
also perform this update in update_process_times() in order to at least
update the state when there is user or system activity, since it's the
only case we care about.
Reported-by: Amit Klein <aksecurity@gmail.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.232
pinctrl: amd: fix npins for uart0 in kerncz_groups
mac80211: allow rx of mesh eapol frames with default rx key
scsi: scsi_transport_spi: Fix function pointer check
xtensa: fix __sync_fetch_and_{and,or}_4 declarations
xtensa: update *pos in cpuinfo_op.next
drivers/net/wan/lapbether: Fixed the value of hard_header_len
net: sky2: initialize return of gm_phy_read
drm/nouveau/i2c/g94-: increase NV_PMGR_DP_AUXCTL_TRANSACTREQ timeout
SUNRPC reverting d03727b248d0 ("NFSv4 fix CLOSE not waiting for direct IO compeletion")
perf/core: Fix locking for children siblings group read
uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix GDB regression
ALSA: info: Drop WARN_ON() from buffer NULL sanity check
ASoC: rt5670: Correct RT5670_LDO_SEL_MASK
btrfs: fix double free on ulist after backref resolution failure
x86/fpu: Disable bottom halves while loading FPU registers
btrfs: fix mount failure caused by race with umount
hippi: Fix a size used in a 'pci_free_consistent()' in an error handling path
ax88172a: fix ax88172a_unbind() failures
net: dp83640: fix SIOCSHWTSTAMP to update the struct with actual configuration
net: smc91x: Fix possible memory leak in smc_drv_probe()
scripts/decode_stacktrace: strip basepath from all paths
regmap: dev_get_regmap_match(): fix string comparison
usb: gadget: udc: gr_udc: fix memleak on error handling path in gr_ep_init()
arm64: Use test_tsk_thread_flag() for checking TIF_SINGLESTEP
x86: math-emu: Fix up 'cmp' insn for clang ias
Revert "cifs: Fix the target file was deleted when rename failed."
staging: wlan-ng: properly check endpoint types
staging: comedi: addi_apci_1032: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: ni_6527: fix INSN_CONFIG_DIGITAL_TRIG support
staging: comedi: addi_apci_1500: check INSN_CONFIG_DIGITAL_TRIG shift
staging: comedi: addi_apci_1564: check INSN_CONFIG_DIGITAL_TRIG shift
serial: 8250: fix null-ptr-deref in serial8250_start_tx()
serial: 8250_mtk: Fix high-speed baud rates clamping
mm/memcg: fix refcount error while moving and swapping
parisc: Add atomic64_set_release() define to avoid CPU soft lockups
ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb
ath9k: Fix regression with Atheros 9271
AX.25: Fix out-of-bounds read in ax25_connect()
AX.25: Prevent out-of-bounds read in ax25_sendmsg()
net-sysfs: add a newline when printing 'tx_timeout' by sysfs
net: udp: Fix wrong clean up for IS_UDPLITE macro
AX.25: Prevent integer overflows in connect and sendmsg
tcp: allow at most one TLP probe per flight
rxrpc: Fix sendmsg() returning EPIPE due to recvmsg() returning ENODATA
ip6_gre: fix null-ptr-deref in ip6gre_init_net()
drivers/net/wan/x25_asy: Fix to make it work
Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation
regmap: debugfs: check count when read regmap file
xfs: set format back to extents if xfs_bmap_extents_to_btree
tools/lib/subcmd/pager.c: do not alias select() params
perf: Make perf able to build with latest libbfd
perf tools: Fix snprint warnings for gcc 8
perf annotate: Use asprintf when formatting objdump command line
perf probe: Fix to check blacklist address correctly
Linux 4.4.232
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Id3f07fa9b926d859582a8f3aa50c7e4c0c847a77
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[ Upstream commit 76be93fc0702322179bb0ea87295d820ee46ad14 ]
Previously TLP may send multiple probes of new data in one
flight. This happens when the sender is cwnd limited. After the
initial TLP containing new data is sent, the sender receives another
ACK that acks partial inflight. It may re-arm another TLP timer
to send more, if no further ACK returns before the next TLP timeout
(PTO) expires. The sender may send in theory a large amount of TLP
until send queue is depleted. This only happens if the sender sees
such irregular uncommon ACK pattern. But it is generally undesirable
behavior during congestion especially.
The original TLP design restrict only one TLP probe per inflight as
published in "Reducing Web Latency: the Virtue of Gentle Aggression",
SIGCOMM 2013. This patch changes TLP to send at most one probe
per inflight.
Note that if the sender is app-limited, TLP retransmits old data
and did not have this issue.
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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xt_entry_target, xt_entry_match and their private data may contain
kernel data.
Introduce helper functions xt_match_to_user, xt_target_to_user and
xt_data_to_user that copy only the expected fields. These replace
existing logic that calls copy_to_user on entire structs, then
overwrites select fields.
Private data is defined in xt_match and xt_target. All matches and
targets that maintain kernel data store this at the tail of their
private structure. Extend xt_match and xt_target with .usersize to
limit how many bytes of data are copied. The remainder is cleared.
If compatsize is specified, usersize can only safely be used if all
fields up to usersize use platform-independent types. Otherwise, the
compat_to_user callback must be defined.
This patch does not yet enable the support logic.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Bug: 120612905
Change-Id: I37b485441adea129a6d9bfd37667815ec96792c6
(cherry picked from commit f32815d21d4d8287336fb9cef4d2d9e0866214c2)
Signed-off-by: Hridya Valsaraju <hridya@google.com>
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Changes in 4.4.231
KVM: s390: reduce number of IO pins to 1
spi: spidev: fix a race between spidev_release and spidev_remove
spi: spidev: fix a potential use-after-free in spidev_release()
scsi: mptscsih: Fix read sense data size
net: cxgb4: fix return error value in t4_prep_fw
smsc95xx: check return value of smsc95xx_reset
smsc95xx: avoid memory leak in smsc95xx_bind
ALSA: compress: fix partial_drain completion state
arm64: kgdb: Fix single-step exception handling oops
ALSA: opl3: fix infoleak in opl3
ALSA: hda - let hs_mic be picked ahead of hp_mic
ALSA: usb-audio: add quirk for MacroSilicon MS2109
KVM: x86: bit 8 of non-leaf PDPEs is not reserved
Revert "ath9k: Fix general protection fault in ath9k_hif_usb_rx_cb"
btrfs: fix fatal extent_buffer readahead vs releasepage race
drm/radeon: fix double free
ARC: entry: fix potential EFA clobber when TIF_SYSCALL_TRACE
ARC: elf: use right ELF_ARCH
bnxt_en: fix NULL dereference in case SR-IOV configuration fails
ipv4: fill fl4_icmp_{type,code} in ping_v4_sendmsg
l2tp: remove skb_dst_set() from l2tp_xmit_skb()
llc: make sure applications use ARPHRD_ETHER
net: Added pointer check for dst->ops->neigh_lookup in dst_neigh_lookup_skb
genetlink: remove genl_bind
tcp: make sure listeners don't initialize congestion-control state
tcp: md5: add missing memory barriers in tcp_md5_do_add()/tcp_md5_hash_key()
tcp: md5: refine tcp_md5_do_add()/tcp_md5_hash_key() barriers
tcp: md5: allow changing MD5 keys in all socket states
i2c: eg20t: Load module automatically if ID matches
Revert "usb/ehci-platform: Set PM runtime as active on resume"
Revert "usb/xhci-plat: Set PM runtime as active on resume"
Revert "usb/ohci-platform: Fix a warning when hibernating"
usb: gadget: udc: atmel: fix uninitialized read in debug printk
staging: comedi: verify array index is correct before using it
perf stat: Zero all the 'ena' and 'run' array slot stats for interval mode
mtd: rawnand: brcmnand: fix CS0 layout
HID: magicmouse: do not set up autorepeat
usb: core: Add a helper function to check the validity of EP type in URB
ALSA: line6: Perform sanity check for each URB creation
ALSA: usb-audio: Fix race against the error recovery URB submission
USB: c67x00: fix use after free in c67x00_giveback_urb
usb: chipidea: core: add wakeup support for extcon
usb: gadget: function: fix missing spinlock in f_uac1_legacy
USB: serial: iuu_phoenix: fix memory corruption
USB: serial: cypress_m8: enable Simply Automated UPB PIM
USB: serial: ch341: add new Product ID for CH340
USB: serial: option: add GosunCn GM500 series
USB: serial: option: add Quectel EG95 LTE modem
virtio: virtio_console: add missing MODULE_DEVICE_TABLE() for rproc serial
fuse: Fix parameter for FS_IOC_{GET,SET}FLAGS
mei: bus: don't clean driver pointer
Input: i8042 - add Lenovo XiaoXin Air 12 to i8042 nomux list
uio_pdrv_genirq: fix use without device tree and no interrupt
MIPS: Fix build for LTS kernel caused by backporting lpj adjustment
hwmon: (emc2103) fix unable to change fan pwm1_enable attribute
dmaengine: fsl-edma: Fix NULL pointer exception in fsl_edma_tx_handler
misc: atmel-ssc: lock with mutex instead of spinlock
sched/fair: handle case of task_h_load() returning 0
Linux 4.4.231
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ibbd0a09b0d8d49101c674cf304c3df711e940b77
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commit e901b9873876ca30a09253731bd3a6b00c44b5b0 upstream.
This patch adds a new helper function to perform a sanity check of the
given URB to see whether it contains a valid endpoint. It's a light-
weight version of what usb_submit_urb() does, but without the kernel
warning followed by the stack trace, just returns an error code.
Especially for a driver that doesn't parse the descriptor but fills
the URB with the fixed endpoint (e.g. some quirks for non-compliant
devices), this kind of check is preferable at the probe phase before
actually submitting the urb.
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Changes in 4.4.230
btrfs: cow_file_range() num_bytes and disk_num_bytes are same
btrfs: fix data block group relocation failure due to concurrent scrub
mm: fix swap cache node allocation mask
EDAC/amd64: Read back the scrub rate PCI register on F15h
mm/slub: fix stack overruns with SLUB_STATS
usb: usbtest: fix missing kfree(dev->buf) in usbtest_disconnect
kgdb: Avoid suspicious RCU usage warning
crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock()
sched/rt: Show the 'sched_rr_timeslice' SCHED_RR timeslice tuning knob in milliseconds
hwmon: (max6697) Make sure the OVERT mask is set correctly
hwmon: (acpi_power_meter) Fix potential memory leak in acpi_power_meter_add()
virtio-blk: free vblk-vqs in error path of virtblk_probe()
i2c: algo-pca: Add 0x78 as SCL stuck low status for PCA9665
Revert "ALSA: usb-audio: Improve frames size computation"
SMB3: Honor 'seal' flag for multiuser mounts
SMB3: Honor persistent/resilient handle flags for multiuser mounts
cifs: Fix the target file was deleted when rename failed.
MIPS: Add missing EHB in mtc0 -> mfc0 sequence for DSPen
netfilter: nf_conntrack_h323: lost .data_len definition for Q.931/ipv6
Linux 4.4.230
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I5402fcb3d8e16e5bf6bec2151354cb207b064e91
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milliseconds
[ Upstream commit 975e155ed8732cb81f55c021c441ae662dd040b5 ]
We added the 'sched_rr_timeslice_ms' SCHED_RR tuning knob in this commit:
ce0dbbbb30ae ("sched/rt: Add a tuning knob to allow changing SCHED_RR timeslice")
... which name suggests to users that it's in milliseconds, while in reality
it's being set in milliseconds but the result is shown in jiffies.
This is obviously confusing when HZ is not 1000, it makes it appear like the
value set failed, such as HZ=100:
root# echo 100 > /proc/sys/kernel/sched_rr_timeslice_ms
root# cat /proc/sys/kernel/sched_rr_timeslice_ms
10
Fix this to be milliseconds all around.
Signed-off-by: Shile Zhang <shile.zhang@nokia.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1485612049-20923-1-git-send-email-shile.zhang@nokia.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Changes in 4.4.229
s390: fix syscall_get_error for compat processes
clk: sunxi: Fix incorrect usage of round_down()
i2c: piix4: Detect secondary SMBus controller on AMD AM4 chipsets
clk: qcom: msm8916: Fix the address location of pll->config_reg
ALSA: isa/wavefront: prevent out of bounds write in ioctl
scsi: qla2xxx: Fix issue with adapter's stopping state
i2c: pxa: clear all master action bits in i2c_pxa_stop_message()
usblp: poison URBs upon disconnect
ps3disk: use the default segment boundary
vfio/pci: fix memory leaks in alloc_perm_bits()
mfd: wm8994: Fix driver operation if loaded as modules
scsi: lpfc: Fix lpfc_nodelist leak when processing unsolicited event
nfsd: Fix svc_xprt refcnt leak when setup callback client failed
powerpc/crashkernel: Take "mem=" option into account
yam: fix possible memory leak in yam_init_driver
mksysmap: Fix the mismatch of '.L' symbols in System.map
scsi: sr: Fix sr_probe() missing deallocate of device minor
scsi: ibmvscsi: Don't send host info in adapter info MAD after LPM
ALSA: usb-audio: Improve frames size computation
s390/qdio: put thinint indicator after early error
tty: hvc: Fix data abort due to race in hvc_open
staging: sm750fb: add missing case while setting FB_VISUAL
i2c: pxa: fix i2c_pxa_scream_blue_murder() debug output
serial: amba-pl011: Make sure we initialize the port.lock spinlock
drivers: base: Fix NULL pointer exception in __platform_driver_probe() if a driver developer is foolish
PCI/ASPM: Allow ASPM on links to PCIe-to-PCI/PCI-X Bridges
power: supply: smb347-charger: IRQSTAT_D is volatile
scsi: mpt3sas: Fix double free warnings
dlm: remove BUG() before panic()
clk: ti: composite: fix memory leak
tty: n_gsm: Fix SOF skipping
tty: n_gsm: Fix waking up upper tty layer when room available
powerpc/pseries/ras: Fix FWNMI_VALID off by one
powerpc/ps3: Fix kexec shutdown hang
vfio-pci: Mask cap zero
usb/ohci-platform: Fix a warning when hibernating
USB: host: ehci-mxc: Add error handling in ehci_mxc_drv_probe()
tty: n_gsm: Fix bogus i++ in gsm_data_kick
clk: samsung: exynos5433: Add IGNORE_UNUSED flag to sclk_i2s1
watchdog: da9062: No need to ping manually before setting timeout
usb: dwc2: gadget: move gadget resume after the core is in L0 state
USB: gadget: udc: s3c2410_udc: Remove pointless NULL check in s3c2410_udc_nuke
usb: gadget: lpc32xx_udc: don't dereference ep pointer before null check
usb: gadget: fix potential double-free in m66592_probe.
net: sunrpc: Fix off-by-one issues in 'rpc_ntop6'
ASoC: fsl_asrc_dma: Fix dma_chan leak when config DMA channel failed
openrisc: Fix issue with argument clobbering for clone/fork
gfs2: Allow lock_nolock mount to specify jid=X
scsi: iscsi: Fix reference count leak in iscsi_boot_create_kobj
lib/zlib: remove outdated and incorrect pre-increment optimization
include/linux/bitops.h: avoid clang shift-count-overflow warnings
elfnote: mark all .note sections SHF_ALLOC
selftests/net: in timestamping, strncpy needs to preserve null byte
scsi: acornscsi: Fix an error handling path in acornscsi_probe()
usb/xhci-plat: Set PM runtime as active on resume
usb/ehci-platform: Set PM runtime as active on resume
perf report: Fix NULL pointer dereference in hists__fprintf_nr_sample_events()
bcache: fix potential deadlock problem in btree_gc_coalesce
block: Fix use-after-free in blkdev_get()
libata: Use per port sync for detach
drm: encoder_slave: fix refcouting error for modules
drm/dp_mst: Reformat drm_dp_check_act_status() a bit
drm/qxl: Use correct notify port address when creating cursor ring
selinux: fix double free
ext4: fix partial cluster initialization when splitting extent
drm/dp_mst: Increase ACT retry timeout to 3s
sparc64: fix misuses of access_process_vm() in genregs32_[sg]et()
block: nr_sects_write(): Disable preemption on seqcount write
crypto: algboss - don't wait during notifier callback
kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
powerpc/kprobes: Fixes for kprobe_lookup_name() on BE
x86/kprobes: Avoid kretprobe recursion bug
kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
e1000e: Do not wake up the system via WOL if device wakeup is disabled
sched/rt, net: Use CONFIG_PREEMPTION.patch
net: core: device_rename: Use rwsem instead of a seqcount
net: Revert "pkt_sched: fq: use proper locking in fq_dump_stats()"
scsi: scsi_devinfo: handle non-terminated strings
l2tp: Allow duplicate session creation with UDP
net: sched: export __netdev_watchdog_up()
fix a braino in "sparc32: fix register window handling in genregs32_[gs]et()"
net: fix memleak in register_netdevice()
net: usb: ax88179_178a: fix packet alignment padding
tg3: driver sleeps indefinitely when EEH errors exceed eeh_max_freezes
ip_tunnel: fix use-after-free in ip_tunnel_lookup()
tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT
ip6_gre: fix use-after-free in ip6gre_tunnel_lookup()
tcp: grow window for OOO packets only for SACK flows
sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket
net: Fix the arp error in some cases
net: Do not clear the sock TX queue in sk_set_socket()
net: core: reduce recursion limit value
mld: fix memory leak in ipv6_mc_destroy_dev()
USB: ohci-sm501: Add missed iounmap() in remove
usb: dwc2: Postponed gadget registration to the udc class driver
usb: add USB_QUIRK_DELAY_INIT for Logitech C922
PCI: Disable MSI for HiSilicon Hip06/Hip07 Root Ports
USB: ehci: reopen solution for Synopsys HC bug
usb: host: ehci-exynos: Fix error check in exynos_ehci_probe()
ALSA: usb-audio: add quirk for Denon DCD-1500RE
xhci: Fix incorrect EP_STATE_MASK
xhci: Fix enumeration issue when setting max packet size for FS devices.
cdc-acm: Add DISABLE_ECHO quirk for Microchip/SMSC chip
ALSA: usb-audio: uac1: Invalidate ctl on interrupt
ALSA: usb-audio: allow clock source validity interrupts
ALSA: usb-audio: Clean up mixer element list traverse
ALSA: usb-audio: Fix OOB access of mixer element list
xhci: Poll for U0 after disabling USB2 LPM
cifs/smb3: Fix data inconsistent when punch hole
cifs/smb3: Fix data inconsistent when zero file range
efi/esrt: Fix reference count leak in esre_create_sysfs_entry.
RDMA/mad: Fix possible memory leak in ib_mad_post_receive_mads()
ARM: imx5: add missing put_device() call in imx_suspend_alloc_ocram()
usb: gadget: udc: Potential Oops in error handling code
netfilter: ipset: fix unaligned atomic access
sched/core: Fix PI boosting between RT and DEADLINE tasks
net: alx: fix race condition in alx_remove
kbuild: improve cc-option to clean up all temporary files
blktrace: break out of blktrace setup on concurrent calls
ACPI: sysfs: Fix pm_profile_attr type
KVM: X86: Fix MSR range of APIC registers in X2APIC mode
mm/slab: use memzero_explicit() in kzfree()
ocfs2: load global_inode_alloc
ocfs2: fix value of OCFS2_INVALID_SLOT
ocfs2: fix panic on nfs server over ocfs2
arm64: perf: Report the PC value in REGS_ABI_32 mode
tracing: Fix event trigger to accept redundant spaces
drm/radeon: fix fb_div check in ni_init_smc_spll_table()
sunrpc: fixed rollback in rpc_gssd_dummy_populate()
SUNRPC: Properly set the @subbuf parameter of xdr_buf_subsegment()
pNFS/flexfiles: Fix list corruption if the mirror count changes
NFSv4 fix CLOSE not waiting for direct IO compeletion
PCI: Disable MSI for HiSilicon Hip06/Hip07 only in Root Port mode
ALSA: usb-audio: Fix invalid NULL check in snd_emuusb_set_samplerate()
Linux 4.4.229
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ic510bbcf5c6e701c747c612876e3ce141757a34a
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commit 72f2ff0deb870145a5a2d24cd75b4f9936159a62 upstream.
The PCIe Root Port in Hip06/Hip07 SoCs advertises an MSI capability, but it
cannot generate MSIs. It can transfer MSI/MSI-X from downstream devices,
but does not support MSI/MSI-X itself.
Add a quirk to prevent use of MSI/MSI-X by the Root Port.
[bhelgaas: changelog, sort vendor ID #define, drop device ID #define]
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 9b38cc704e844e41d9cf74e647bff1d249512cb3 ]
Ziqian reported lockup when adding retprobe on _raw_spin_lock_irqsave.
My test was also able to trigger lockdep output:
============================================
WARNING: possible recursive locking detected
5.6.0-rc6+ #6 Not tainted
--------------------------------------------
sched-messaging/2767 is trying to acquire lock:
ffffffff9a492798 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_hash_lock+0x52/0xa0
but task is already holding lock:
ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(kretprobe_table_locks[i].lock));
lock(&(kretprobe_table_locks[i].lock));
*** DEADLOCK ***
May be due to missing lock nesting notation
1 lock held by sched-messaging/2767:
#0: ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50
stack backtrace:
CPU: 3 PID: 2767 Comm: sched-messaging Not tainted 5.6.0-rc6+ #6
Call Trace:
dump_stack+0x96/0xe0
__lock_acquire.cold.57+0x173/0x2b7
? native_queued_spin_lock_slowpath+0x42b/0x9e0
? lockdep_hardirqs_on+0x590/0x590
? __lock_acquire+0xf63/0x4030
lock_acquire+0x15a/0x3d0
? kretprobe_hash_lock+0x52/0xa0
_raw_spin_lock_irqsave+0x36/0x70
? kretprobe_hash_lock+0x52/0xa0
kretprobe_hash_lock+0x52/0xa0
trampoline_handler+0xf8/0x940
? kprobe_fault_handler+0x380/0x380
? find_held_lock+0x3a/0x1c0
kretprobe_trampoline+0x25/0x50
? lock_acquired+0x392/0xbc0
? _raw_spin_lock_irqsave+0x50/0x70
? __get_valid_kprobe+0x1f0/0x1f0
? _raw_spin_unlock_irqrestore+0x3b/0x40
? finish_task_switch+0x4b9/0x6d0
? __switch_to_asm+0x34/0x70
? __switch_to_asm+0x40/0x70
The code within the kretprobe handler checks for probe reentrancy,
so we won't trigger any _raw_spin_lock_irqsave probe in there.
The problem is in outside kprobe_flush_task, where we call:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave
where _raw_spin_lock_irqsave triggers the kretprobe and installs
kretprobe_trampoline handler on _raw_spin_lock_irqsave return.
The kretprobe_trampoline handler is then executed with already
locked kretprobe_table_locks, and first thing it does is to
lock kretprobe_table_locks ;-) the whole lockup path like:
kprobe_flush_task
kretprobe_table_lock
raw_spin_lock_irqsave
_raw_spin_lock_irqsave ---> probe triggered, kretprobe_trampoline installed
---> kretprobe_table_locks locked
kretprobe_trampoline
trampoline_handler
kretprobe_hash_lock(current, &head, &flags); <--- deadlock
Adding kprobe_busy_begin/end helpers that mark code with fake
probe installed to prevent triggering of another kprobe within
this code.
Using these helpers in kprobe_flush_task, so the probe recursion
protection check is hit and the probe is never set to prevent
above lockup.
Link: http://lkml.kernel.org/r/158927059835.27680.7011202830041561604.stgit@devnote2
Fixes: ef53d9c5e4da ("kprobes: improve kretprobe scalability with hashed locking")
Cc: Ingo Molnar <mingo@kernel.org>
Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org>
Cc: Anders Roxell <anders.roxell@linaro.org>
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Reported-by: "Ziqian SUN (Zamir)" <zsun@redhat.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 15b81ce5abdc4b502aa31dff2d415b79d2349d2f ]
For optimized block readers not holding a mutex, the "number of sectors"
64-bit value is protected from tearing on 32-bit architectures by a
sequence counter.
Disable preemption before entering that sequence counter's write side
critical section. Otherwise, the read side can preempt the write side
section and spin for the entire scheduler tick. If the reader belongs to
a real-time scheduling class, it can spin forever and the kernel will
livelock.
Fixes: c83f6bf98dc1 ("block: add partition resize function to blkpg ioctl")
Cc: <stable@vger.kernel.org>
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b5292111de9bb70cba3489075970889765302136 ]
Commit 130f4caf145c ("libata: Ensure ata_port probe has completed before
detach") may cause system freeze during suspend.
Using async_synchronize_full() in PM callbacks is wrong, since async
callbacks that are already scheduled may wait for not-yet-scheduled
callbacks, causes a circular dependency.
Instead of using big hammer like async_synchronize_full(), use async
cookie to make sure port probe are synced, without affecting other
scheduled PM callbacks.
Fixes: 130f4caf145c ("libata: Ensure ata_port probe has completed before detach")
Suggested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: John Garry <john.garry@huawei.com>
BugLink: https://bugs.launchpad.net/bugs/1867983
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 51da9dfb7f20911ae4e79e9b412a9c2d4c373d4b ]
ELFNOTE_START allows callers to specify flags for .pushsection assembler
directives. All callsites but ELF_NOTE use "a" for SHF_ALLOC. For vdso's
that explicitly use ELF_NOTE_START and BUILD_SALT, the same section is
specified twice after preprocessing, once with "a" flag, once without.
Example:
.pushsection .note.Linux, "a", @note ;
.pushsection .note.Linux, "", @note ;
While GNU as allows this ordering, it warns for the opposite ordering,
making these directives position dependent. We'd prefer not to precisely
match this behavior in Clang's integrated assembler. Instead, the non
__ASSEMBLY__ definition of ELF_NOTE uses
__attribute__((section(".note.Linux"))) which is created with SHF_ALLOC,
so let's make the __ASSEMBLY__ definition of ELF_NOTE consistent with C
and just always use "a" flag.
This allows Clang to assemble a working mainline (5.6) kernel via:
$ make CC=clang AS=clang
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Fangrui Song <maskray@google.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/913
Link: http://lkml.kernel.org/r/20200325231250.99205-1-ndesaulniers@google.com
Debugged-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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