| Commit message (Collapse) | Author | Age |
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Having two ring buffers per-peer means that every peer results in two
massive ring allocations. On an 8-core x86_64 machine, this commit
reduces the per-peer allocation from 18,688 bytes to 1,856 bytes, which
is an 90% reduction. Ninety percent! With some single-machine
deployments approaching 500,000 peers, we're talking about a reduction
from 7 gigs of memory down to 700 megs of memory.
In order to get rid of these per-peer allocations, this commit switches
to using a list-based queueing approach. Currently GSO fragments are
chained together using the skb->next pointer (the skb_list_* singly
linked list approach), so we form the per-peer queue around the unused
skb->prev pointer (which sort of makes sense because the links are
pointing backwards). Use of skb_queue_* is not possible here, because
that is based on doubly linked lists and spinlocks. Multiple cores can
write into the queue at any given time, because its writes occur in the
start_xmit path or in the udp_recv path. But reads happen in a single
workqueue item per-peer, amounting to a multi-producer, single-consumer
paradigm.
The MPSC queue is implemented locklessly and never blocks. However, it
is not linearizable (though it is serializable), with a very tight and
unlikely race on writes, which, when hit (some tiny fraction of the
0.15% of partial adds on a fully loaded 16-core x86_64 system), causes
the queue reader to terminate early. However, because every packet sent
queues up the same workqueue item after it is fully added, the worker
resumes again, and stopping early isn't actually a problem, since at
that point the packet wouldn't have yet been added to the encryption
queue. These properties allow us to avoid disabling interrupts or
spinning. The design is based on Dmitry Vyukov's algorithm [1].
Performance-wise, ordinarily list-based queues aren't preferable to
ringbuffers, because of cache misses when following pointers around.
However, we *already* have to follow the adjacent pointers when working
through fragments, so there shouldn't actually be any change there. A
potential downside is that dequeueing is a bit more complicated, but the
ptr_ring structure used prior had a spinlock when dequeueing, so all and
all the difference appears to be a wash.
Actually, from profiling, the biggest performance hit, by far, of this
commit winds up being atomic_add_unless(count, 1, max) and atomic_
dec(count), which account for the majority of CPU time, according to
perf. In that sense, the previous ring buffer was superior in that it
could check if it was full by head==tail, which the list-based approach
cannot do.
But all and all, this enables us to get massive memory savings, allowing
WireGuard to scale for real world deployments, without taking much of a
performance hit.
[1] http://www.1024cores.net/home/lock-free-algorithms/queues/intrusive-mpsc-node-based-queue
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I0ff1f036b5cff6d7be89042459e40a86e7e7840c
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If skb->protocol doesn't match the actual skb->data header, it's
probably not a good idea to pass it off to icmp{,v6}_ndo_send, which is
expecting to reply to a valid IP packet. So this commit has that early
mismatch case jump to a later error label.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I89049b5c67889f73600a0d219cb39ad47f5e65d9
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The is_dead boolean is checked for every single packet, while the
internal_id member is used basically only for pr_debug messages. So it
makes sense to hoist up is_dead into some space formerly unused by a
struct hole, while demoting internal_api to below the lowest struct
cache line.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I9d95581f52ed78f7d8a390d899f4178246cea9b5
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With the 4.4.256 and 4.9.256 kernels, the previous calculation for
integer comparison overflowed. This commit redefines the broken
constants to have more space for the sublevel.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I38b2b592ce769adbdca56955cac18dbd394d3258
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We don't need this in all files, and it just complicates things.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: Ie99fab32d50bb636ad7b99e38e05b9698e57e9d8
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bruno Martins <bgcngm@gmail.com>
Change-Id: I4673c5e84efb6e0f8ab6835d090219149bd3f68b
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I507bc2de13645d206a771b9e381e06bb453359d1
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I3bfa3b8eacc6d880e87749e705f3f96096ff9f37
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Bruno Martins <bgcngm@gmail.com>
Change-Id: Iff9be0ec593fd83cdc1819ef4a4531f22e0d65ab
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The endpoint->src_if4 has nothing to do with fixed-endian numbers; remove
the bogus annotation.
This was introduced in
https://git.zx2c4.com/wireguard-monolithic-historical/commit?id=14e7d0a499a676ec55176c0de2f9fcbd34074a82
in the historical WireGuard repo because the old code used to
zero-initialize multiple members as follows:
endpoint->src4.s_addr = endpoint->src_if4 = fl.saddr = 0;
Because fl.saddr is fixed-endian and an assignment returns a value with the
type of its left operand, this meant that sparse detected an assignment
between values of different endianness.
Since then, this assignment was already split up into separate statements;
just the cast survived.
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I2b5bcadd8ecbcb27c97876f2b4a89cc73f65d79f
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The definition of IS_ERR() already applies the unlikely() notation
when checking the error status of the passed pointer. For this
reason there is no need to have the same notation outside of
IS_ERR() itself.
Clean up code by removing redundant notation.
Signed-off-by: Antonio Quartulli <a@unstable.cc>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I7d6bb773908583c55db620a9c5263eb72476bf00
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The 5.4 series of -rt kernels moved from PREEMPT_RT_BASE/PREEMPT_RT_FULL
to PREEMPT_RT, so we have to account for it here. Otherwise users get
scheduling-while-atomic splats.
Reported-by: Erik Schuitema <erik@essd.nl>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: I307514d09a82b40d165eaf92c64f70e76c1bfae2
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Change-Id: Ia04067608c91f6c39c71e2df1995ebb1ca73fb3c
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https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998
This brings LA.UM.9.2.r1-03400-SDMxx0.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
e5239ed489f64 Merge 4.4.276 into android-4.4-p
Change-Id: I5f3fdc31e61b229b299cf72014710d36e42863d8
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Changes in 4.4.276
ALSA: usb-audio: fix rate on Ozone Z90 USB headset
media: dvb-usb: fix wrong definition
Input: usbtouchscreen - fix control-request directions
net: can: ems_usb: fix use-after-free in ems_usb_disconnect()
usb: gadget: eem: fix echo command packet response issue
USB: cdc-acm: blacklist Heimann USB Appset device
ntfs: fix validity check for file name attribute
iov_iter_fault_in_readable() should do nothing in xarray case
Input: joydev - prevent use of not validated data in JSIOCSBTNMAP ioctl
ARM: dts: at91: sama5d4: fix pinctrl muxing
btrfs: clear defrag status of a root if starting transaction fails
ext4: fix kernel infoleak via ext4_extent_header
ext4: correct the cache_nr in tracepoint ext4_es_shrink_exit
ext4: remove check for zero nr_to_scan in ext4_es_scan()
ext4: fix avefreec in find_group_orlov
SUNRPC: Fix the batch tasks count wraparound.
SUNRPC: Should wake up the privileged task firstly.
s390/cio: dont call css_wait_for_slow_path() inside a lock
iio: ltr501: mark register holding upper 8 bits of ALS_DATA{0,1} and PS_DATA as volatile, too
iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR
iio: ltr501: ltr501_read_ps(): add missing endianness conversion
serial_cs: Add Option International GSM-Ready 56K/ISDN modem
ath9k: Fix kernel NULL pointer dereference during ath_reset_internal()
ssb: sdio: Don't overwrite const buffer if block_write fails
seq_buf: Make trace_seq_putmem_hex() support data longer than 8
fuse: check connected before queueing on fpq->io
spi: spi-topcliff-pch: Fix potential double free in pch_spi_process_messages()
spi: omap-100k: Fix the length judgment problem
crypto: nx - add missing MODULE_DEVICE_TABLE
media: cpia2: fix memory leak in cpia2_usb_probe
media: pvrusb2: fix warning in pvr2_i2c_core_done
crypto: qat - check return code of qat_hal_rd_rel_reg()
crypto: qat - remove unused macro in FW loader
media: v4l2-core: Avoid the dangling pointer in v4l2_fh_release
media: bt8xx: Fix a missing check bug in bt878_probe
mmc: via-sdmmc: add a check against NULL pointer dereference
crypto: shash - avoid comparing pointers to exported functions under CFI
media: dvb_net: avoid speculation from net slot
btrfs: disable build on platforms having page size 256K
regulator: da9052: Ensure enough delay time for .set_voltage_time_sel
ACPI: processor idle: Fix up C-state latency if not ordered
block_dump: remove block_dump feature in mark_inode_dirty()
fs: dlm: cancel work sync othercon
random32: Fix implicit truncation warning in prandom_seed_state()
ACPI: bus: Call kobject_put() in acpi_init() error path
platform/x86: toshiba_acpi: Fix missing error code in toshiba_acpi_setup_keyboard()
ia64: mca_drv: fix incorrect array size calculation
crypto: ixp4xx - dma_unmap the correct address
crypto: ux500 - Fix error return code in hash_hw_final()
sata_highbank: fix deferred probing
pata_rb532_cf: fix deferred probing
media: I2C: change 'RST' to "RSET" to fix multiple build errors
pata_octeon_cf: avoid WARN_ON() in ata_host_activate()
pata_ep93xx: fix deferred probing
media: tc358743: Fix error return code in tc358743_probe_of()
media: siano: Fix out-of-bounds warnings in smscore_load_firmware_family2()
mmc: usdhi6rol0: fix error return code in usdhi6_probe()
media: s5p-g2d: Fix a memory leak on ctx->fh.m2m_ctx
spi: spi-sun6i: Fix chipselect/clock bug
crypto: nx - Fix RCU warning in nx842_OF_upd_status
ACPI: sysfs: Fix a buffer overrun problem with description_show()
net: pch_gbe: Propagate error from devm_gpio_request_one()
ehea: fix error return code in ehea_restart_qps()
drm: qxl: ensure surf.data is ininitialized
wireless: carl9170: fix LEDS build errors & warnings
brcmsmac: mac80211_if: Fix a resource leak in an error handling path
ath10k: Fix an error code in ath10k_add_interface()
netlabel: Fix memory leak in netlbl_mgmt_add_common
netfilter: nft_exthdr: check for IPv6 packet before further processing
net: ethernet: aeroflex: fix UAF in greth_of_remove
net: ethernet: ezchip: fix UAF in nps_enet_remove
net: ethernet: ezchip: fix error handling
vxlan: add missing rcu_read_lock() in neigh_reduce()
i40e: Fix error handling in i40e_vsi_open
writeback: fix obtain a reference to a freeing memcg css
tty: nozomi: Fix a resource leak in an error handling function
iio: adis_buffer: do not return ints in irq handlers
iio: accel: bma180: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
iio: accel: stk8312: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
iio: accel: stk8ba50: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
Input: hil_kbd - fix error return code in hil_dev_connect()
char: pcmcia: error out if 'num_bytes_read' is greater than 4 in set_protocol()
tty: nozomi: Fix the error handling path of 'nozomi_card_init()'
scsi: FlashPoint: Rename si_flags field
s390: appldata depends on PROC_SYSCTL
staging: gdm724x: check for buffer overflow in gdm_lte_multi_sdu_pkt()
staging: gdm724x: check for overflow in gdm_lte_netif_rx()
scsi: mpt3sas: Fix error return value in _scsih_expander_add()
phy: ti: dm816x: Fix the error handling path in 'dm816x_usb_phy_probe()
extcon: sm5502: Drop invalid register write in sm5502_reg_data
extcon: max8997: Add missing modalias string
mmc: vub3000: fix control-request direction
scsi: core: Retry I/O for Notify (Enable Spinup) Required error
net: pch_gbe: Use proper accessors to BE data in pch_ptp_match()
hugetlb: clear huge pte during flush function on mips platform
atm: iphase: fix possible use-after-free in ia_module_exit()
mISDN: fix possible use-after-free in HFC_cleanup()
atm: nicstar: Fix possible use-after-free in nicstar_cleanup()
net: Treat __napi_schedule_irqoff() as __napi_schedule() on PREEMPT_RT
reiserfs: add check for invalid 1st journal block
drm/virtio: Fix double free on probe failure
udf: Fix NULL pointer dereference in udf_symlink function
e100: handle eeprom as little endian
ipv6: use prandom_u32() for ID generation
RDMA/cxgb4: Fix missing error code in create_qp()
dm space maps: don't reset space map allocation cursor when committing
net: micrel: check return value after calling platform_get_resource()
selinux: use __GFP_NOWARN with GFP_NOWAIT in the AVC
xfrm: Fix error reporting in xfrm_state_construct.
wlcore/wl12xx: Fix wl12xx get_mac error if device is in ELP
wl1251: Fix possible buffer overflow in wl1251_cmd_scan
cw1200: add missing MODULE_DEVICE_TABLE
atm: nicstar: use 'dma_free_coherent' instead of 'kfree'
atm: nicstar: register the interrupt handler in the right place
sfc: avoid double pci_remove of VFs
sfc: error code if SRIOV cannot be disabled
wireless: wext-spy: Fix out-of-bounds warning
RDMA/cma: Fix rdma_resolve_route() memory leak
Bluetooth: Fix the HCI to MGMT status conversion table
Bluetooth: Shutdown controller after workqueues are flushed or cancelled
Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc.
sctp: add size validation when walking chunks
fuse: reject internal errno
can: gw: synchronize rcu operations before removing gw job entry
can: bcm: delay release of struct bcm_op after synchronize_rcu()
mac80211: fix memory corruption in EAPOL handling
powerpc/barrier: Avoid collision with clang's __lwsync macro
mmc: sdhci: Fix warning message when accessing RPMB in HS400 mode
ata: ahci_sunxi: Disable DIPM
ASoC: tegra: Set driver_name=tegra for all machine drivers
ipmi/watchdog: Stop watchdog timer when the current action is 'none'
power: supply: ab8500: Fix an old bug
seq_buf: Fix overflow in seq_buf_putmem_hex()
ipack/carriers/tpci200: Fix a double free in tpci200_pci_probe
dm btree remove: assign new_root only when removal succeeds
media: zr364xx: fix memory leak in zr364xx_start_readpipe
media: gspca/sq905: fix control-request direction
media: gspca/sunplus: fix zero-length control requests
media: uvcvideo: Fix pixel format change for Elgato Cam Link 4K
jfs: fix GPF in diFree
KVM: x86: Use guest MAXPHYADDR from CPUID.0x8000_0008 iff TDP is enabled
KVM: X86: Disable hardware breakpoints unconditionally before kvm_x86->run()
tty: serial: fsl_lpuart: fix the potential risk of division or modulo by zero
misc/libmasm/module: Fix two use after free in ibmasm_init_one
Revert "ALSA: bebob/oxfw: fix Kconfig entry for Mackie d.2 Pro"
scsi: lpfc: Fix "Unexpected timeout" error in direct attach topology
tty: serial: 8250: serial_cs: Fix a memory leak in error handling path
fs/jfs: Fix missing error code in lmLogInit()
scsi: iscsi: Add iscsi_cls_conn refcount helpers
mfd: da9052/stmpe: Add and modify MODULE_DEVICE_TABLE
ALSA: sb: Fix potential double-free of CSP mixer elements
powerpc/ps3: Add dma_mask to ps3_dma_region
gpio: zynq: Check return value of pm_runtime_get_sync
ALSA: ppc: fix error return code in snd_pmac_probe()
selftests/powerpc: Fix "no_handler" EBB selftest
ASoC: soc-core: Fix the error return code in snd_soc_of_parse_audio_routing()
ALSA: bebob: add support for ToneWeal FW66
usb: gadget: f_hid: fix endianness issue with descriptors
usb: gadget: hid: fix error return code in hid_bind()
powerpc/boot: Fixup device-tree on little endian
backlight: lm3630a: Fix return code of .update_status() callback
ALSA: hda: Add IRQ check for platform_get_irq()
lib/decompress_unlz4.c: correctly handle zero-padding around initrds.
pwm: spear: Don't modify HW state in .remove callback
power: supply: ab8500: Avoid NULL pointers
power: reset: gpio-poweroff: add missing MODULE_DEVICE_TABLE
ARM: 9087/1: kprobes: test-thumb: fix for LLVM_IAS=1
watchdog: Fix possible use-after-free in wdt_startup()
watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff()
watchdog: Fix possible use-after-free by calling del_timer_sync()
ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty
power: supply: charger-manager: add missing MODULE_DEVICE_TABLE
power: supply: ab8500: add missing MODULE_DEVICE_TABLE
virtio-blk: Fix memory leak among suspend/resume procedure
virtio_console: Assure used length from device is limited
PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun
um: fix error return code in slip_open()
um: fix error return code in winch_tramp()
nfs: fix acl memory leak of posix_acl_create()
ALSA: isa: Fix error return code in snd_cmi8330_probe()
hexagon: use common DISCARDS macro
ARM: dts: exynos: fix PWM LED max brightness on Odroid XU4
rtc: fix snprintf() checking in is_rtc_hctosys()
memory: fsl_ifc: fix leak of IO mapping on probe failure
memory: fsl_ifc: fix leak of private memory on probe failure
scsi: be2iscsi: Fix an error handling path in beiscsi_dev_probe()
mips: disable branch profiling in boot/decompress.o
MIPS: vdso: Invalid GIC access through VDSO
seq_file: disallow extremely large seq buffer allocations
Linux 4.4.276
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If7756927f46fbb8a74337ee1eae8031c0d3579e2
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Link: https://lore.kernel.org/r/20210719144913.076563739@linuxfoundation.org
Tested-by: Pavel Machek (CIP) <pavel@denx.de>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b upstream.
There is no reasonable need for a buffer larger than this, and it avoids
int overflow pitfalls.
Fixes: 058504edd026 ("fs/seq_file: fallback to vmalloc allocation")
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Qualys Security Advisory <qsa@qualys.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 47ce8527fbba145a7723685bc9a27d9855e06491 ]
Accessing raw timers (currently only CLOCK_MONOTONIC_RAW) through VDSO
doesn't return the correct time when using the GIC as clock source.
The address of the GIC mapped page is in this case not calculated
correctly. The GIC mapped page is calculated from the VDSO data by
subtracting PAGE_SIZE:
void *get_gic(const struct vdso_data *data) {
return (void __iomem *)data - PAGE_SIZE;
}
However, the data pointer is not page aligned for raw clock sources.
This is because the VDSO data for raw clock sources (CS_RAW = 1) is
stored after the VDSO data for coarse clock sources (CS_HRES_COARSE = 0).
Therefore, only the VDSO data for CS_HRES_COARSE is page aligned:
+--------------------+
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| vd[CS_RAW] | ---+
| vd[CS_HRES_COARSE] | |
+--------------------+ | -PAGE_SIZE
| | |
| GIC mapped page | <--+
| |
+--------------------+
When __arch_get_hw_counter() is called with &vd[CS_RAW], get_gic returns
the wrong address (somewhere inside the GIC mapped page). The GIC counter
values are not returned which results in an invalid time.
Fixes: a7f4df4e21dd ("MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime()")
Signed-off-by: Martin Fäcknitz <faecknitz@hotsplots.de>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 97e488073cfca0eea84450169ca4cbfcc64e33e3 ]
Use DISABLE_BRANCH_PROFILING for arch/mips/boot/compressed/decompress.o
to prevent linkage errors.
mips64-linux-ld: arch/mips/boot/compressed/decompress.o: in function `LZ4_decompress_fast_extDict':
decompress.c:(.text+0x8c): undefined reference to `ftrace_likely_update'
mips64-linux-ld: decompress.c:(.text+0xf4): undefined reference to `ftrace_likely_update'
mips64-linux-ld: decompress.c:(.text+0x200): undefined reference to `ftrace_likely_update'
mips64-linux-ld: decompress.c:(.text+0x230): undefined reference to `ftrace_likely_update'
mips64-linux-ld: decompress.c:(.text+0x320): undefined reference to `ftrace_likely_update'
mips64-linux-ld: arch/mips/boot/compressed/decompress.o:decompress.c:(.text+0x3f4): more undefined references to `ftrace_likely_update' follow
Fixes: e76e1fdfa8f8 ("lib: add support for LZ4-compressed kernel")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Cc: Kyungsik Lee <kyungsik.lee@lge.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 030e4138d11fced3b831c2761e4cecf347bae99c ]
If an error occurs after a pci_enable_pcie_error_reporting() call, it must
be undone by a corresponding pci_disable_pcie_error_reporting() call, as
already done in the remove function.
Link: https://lore.kernel.org/r/77adb02cfea7f1364e5603ecf3930d8597ae356e.1623482155.git.christophe.jaillet@wanadoo.fr
Fixes: 3567f36a09d1 ("[SCSI] be2iscsi: Fix AER handling in driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 8e0d09b1232d0538066c40ed4c13086faccbdff6 ]
On probe error the driver should free the memory allocated for private
structure. Fix this by using resource-managed allocation.
Fixes: a20cbdeffce2 ("powerpc/fsl: Add support for Integrated Flash Controller")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210527154322.81253-2-krzysztof.kozlowski@canonical.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 3b132ab67fc7a358fff35e808fa65d4bea452521 ]
On probe error the driver should unmap the IO memory. Smatch reports:
drivers/memory/fsl_ifc.c:298 fsl_ifc_ctrl_probe() warn: 'fsl_ifc_ctrl_dev->gregs' not released on lines: 298.
Fixes: a20cbdeffce2 ("powerpc/fsl: Add support for Integrated Flash Controller")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210527154322.81253-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 54b909436ede47e0ee07f1765da27ec2efa41e84 ]
The scnprintf() function silently truncates the printf() and returns
the number bytes that it was able to copy (not counting the NUL
terminator). Thus, the highest value it can return here is
"NAME_SIZE - 1" and the overflow check is dead code. Fix this by
using the snprintf() function which returns the number of bytes that
would have been copied if there was enough space and changing the
condition from "> NAME_SIZE" to ">= NAME_SIZE".
Fixes: 92589c986b33 ("rtc-proc: permit the /proc/driver/rtc device to use other devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/YJov/pcGmhLi2pEl@mwanda
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit fd2f1717966535b7d0b6fe45cf0d79e94330da5f ]
There is no "max_brightness" property as pointed out by dtschema:
arch/arm/boot/dts/exynos5422-odroidxu4.dt.yaml: led-controller: led-1: 'max-brightness' is a required property
Fixes: 6658356014cb ("ARM: dts: Add support Odroid XU4 board for exynos5422-odroidxu4")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210505135941.59898-5-krzysztof.kozlowski@canonical.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 681ba73c72302214686401e707e2087ed11a6556 ]
ld.lld warns that the '.modinfo' section is not currently handled:
ld.lld: warning: kernel/built-in.a(workqueue.o):(.modinfo) is being placed in '.modinfo'
ld.lld: warning: kernel/built-in.a(printk/printk.o):(.modinfo) is being placed in '.modinfo'
ld.lld: warning: kernel/built-in.a(irq/spurious.o):(.modinfo) is being placed in '.modinfo'
ld.lld: warning: kernel/built-in.a(rcu/update.o):(.modinfo) is being placed in '.modinfo'
The '.modinfo' section was added in commit 898490c010b5 ("moduleparam:
Save information about built-in modules in separate file") to the DISCARDS
macro but Hexagon has never used that macro. The unification of DISCARDS
happened in commit 023bf6f1b8bf ("linker script: unify usage of discard
definition") in 2009, prior to Hexagon being added in 2011.
Switch Hexagon over to the DISCARDS macro so that anything that is
expected to be discarded gets discarded.
Link: https://lkml.kernel.org/r/20210521011239.1332345-3-nathan@kernel.org
Fixes: e95bf452a9e2 ("Hexagon: Add configuration and makefiles for the Hexagon architecture.")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Brian Cain <bcain@codeaurora.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Oliver Glitta <glittao@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
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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[ Upstream commit 31028cbed26a8afa25533a10425ffa2ab794c76c ]
When 'SB_HW_16' check fails, the error code -ENODEV instead of 0 should be
returned, which is the same as that returned when 'WSS_HW_CMI8330' check
fails.
Fixes: 43bcd973d6d0 ("[ALSA] Add snd_card_set_generic_dev() call to ISA drivers")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210707074051.2663-1-thunder.leizhen@huawei.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 1fcb6fcd74a222d9ead54d405842fc763bb86262 ]
When looking into another nfs xfstests report, I found acl and
default_acl in nfs3_proc_create() and nfs3_proc_mknod() error
paths are possibly leaked. Fix them in advance.
Fixes: 013cdf1088d7 ("nfs: use generic posix ACL infrastructure for v3 Posix ACLs")
Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit ccf1236ecac476d9d2704866d9a476c86e387971 ]
Fix to return a negative error code from the error handling case instead
of 0, as done elsewhere in this function.
Fixes: 89df6bfc0405 ("uml: DEBUG_SHIRQ fixes")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-By: anton.ivanov@cambridgegreys.com
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b77e81fbe5f5fb4ad9a61ec80f6d1e30b6da093a ]
Fix to return a negative error code from the error handling case instead
of 0, as done elsewhere in this function.
Fixes: a3c77c67a443 ("[PATCH] uml: slirp and slip driver cleanups and fixes")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-By: anton.ivanov@cambridgegreys.com
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit bdcdaa13ad96f1a530711c29e6d4b8311eff767c ]
"utf16s_to_utf8s(..., buf, PAGE_SIZE)" puts up to PAGE_SIZE bytes into
"buf" and returns the number of bytes it actually put there. If it wrote
PAGE_SIZE bytes, the newline added by dsm_label_utf16s_to_utf8s() would
overrun "buf".
Reduce the size available for utf16s_to_utf8s() to use so there is always
space for the newline.
[bhelgaas: reorder patch in series, commit log]
Fixes: 6058989bad05 ("PCI: Export ACPI _DSM provided firmware instance number and string name to sysfs")
Link: https://lore.kernel.org/r/20210603000112.703037-7-kw@linux.com
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit d00d8da5869a2608e97cfede094dfc5e11462a46 ]
The buf->len might come from an untrusted device. This
ensures the value would not exceed the size of the buffer
to avoid data corruption or loss.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20210525125622.1203-1-xieyongji@bytedance.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b71ba22e7c6c6b279c66f53ee7818709774efa1f ]
The vblk->vqs should be freed before we call init_vqs()
in virtblk_restore().
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Link: https://lore.kernel.org/r/20210517084332.280-1-xieyongji@bytedance.com
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit dfe52db13ab8d24857a9840ec7ca75eef800c26c ]
This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 073b5d5b1f9cc94a3eea25279fbafee3f4f5f097 ]
This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 22d41cdcd3cfd467a4af074165357fcbea1c37f5 ]
The checks for page->mapping are odd, as set_page_dirty is an
address_space operation, and I don't see where it would be called on a
non-pagecache page.
The warning about the page lock also seems bogus. The comment over
set_page_dirty() says that it can be called without the page lock in
some rare cases. I don't think we want to warn if that's the case.
Reported-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit d0212f095ab56672f6f36aabc605bda205e1e0bf ]
This driver's remove path calls del_timer(). However, that function
does not wait until the timer handler finishes. This means that the
timer handler may still be running after the driver's remove function
has finished, which would result in a use-after-free.
Fix by calling del_timer_sync(), which makes sure the timer handler
has finished, and unable to re-schedule itself.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/r/1620802676-19701-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 90b7c141132244e8e49a34a4c1e445cce33e07f4 ]
This module's remove path calls del_timer(). However, that function
does not wait until the timer handler finishes. This means that the
timer handler may still be running after the driver's remove function
has finished, which would result in a use-after-free.
Fix by calling del_timer_sync(), which makes sure the timer handler
has finished, and unable to re-schedule itself.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1620716691-108460-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit c08a6b31e4917034f0ed0cb457c3bb209576f542 ]
This module's remove path calls del_timer(). However, that function
does not wait until the timer handler finishes. This means that the
timer handler may still be running after the driver's remove function
has finished, which would result in a use-after-free.
Fix by calling del_timer_sync(), which makes sure the timer handler
has finished, and unable to re-schedule itself.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1620716495-108352-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 8b95a7d90ce8160ac5cffd5bace6e2eba01a871e ]
There's a few instructions that GAS infers operands but Clang doesn't;
from what I can tell the Arm ARM doesn't say these are optional.
F5.1.257 TBB, TBH T1 Halfword variant
F5.1.238 STREXD T1 variant
F5.1.84 LDREXD T1 variant
Link: https://github.com/ClangBuiltLinux/linux/issues/1309
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Jian Cai <jiancai@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit ed3443fb4df4e140a22f65144546c8a8e1e27f4e ]
This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 5bcb5087c9dd3dca1ff0ebd8002c5313c9332b56 ]
Sometimes the code will crash because we haven't enabled
AC or USB charging and thus not created the corresponding
psy device. Fix it by checking that it is there before
notifying.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b601a18f12383001e7a8da238de7ca1559ebc450 ]
A consumer is expected to disable a PWM before calling pwm_put(). And if
they didn't there is hopefully a good reason (or the consumer needs
fixing). Also if disabling an enabled PWM was the right thing to do,
this should better be done in the framework instead of in each low level
driver.
So drop the hardware modification from the .remove() callback.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 2c484419efc09e7234c667aa72698cb79ba8d8ed ]
lz4 compatible decompressor is simple. The format is underspecified and
relies on EOF notification to determine when to stop. Initramfs buffer
format[1] explicitly states that it can have arbitrary number of zero
padding. Thus when operating without a fill function, be extra careful to
ensure that sizes less than 4, or apperantly empty chunksizes are treated
as EOF.
To test this I have created two cpio initrds, first a normal one,
main.cpio. And second one with just a single /test-file with content
"second" second.cpio. Then i compressed both of them with gzip, and with
lz4 -l. Then I created a padding of 4 bytes (dd if=/dev/zero of=pad4 bs=1
count=4). To create four testcase initrds:
1) main.cpio.gzip + extra.cpio.gzip = pad0.gzip
2) main.cpio.lz4 + extra.cpio.lz4 = pad0.lz4
3) main.cpio.gzip + pad4 + extra.cpio.gzip = pad4.gzip
4) main.cpio.lz4 + pad4 + extra.cpio.lz4 = pad4.lz4
The pad4 test-cases replicate the initrd load by grub, as it pads and
aligns every initrd it loads.
All of the above boot, however /test-file was not accessible in the initrd
for the testcase #4, as decoding in lz4 decompressor failed. Also an
error message printed which usually is harmless.
Whith a patched kernel, all of the above testcases now pass, and
/test-file is accessible.
This fixes lz4 initrd decompress warning on every boot with grub. And
more importantly this fixes inability to load multiple lz4 compressed
initrds with grub. This patch has been shipping in Ubuntu kernels since
January 2021.
[1] ./Documentation/driver-api/early-userspace/buffer-format.rst
BugLink: https://bugs.launchpad.net/bugs/1835660
Link: https://lore.kernel.org/lkml/20210114200256.196589-1-xnox@ubuntu.com/ # v0
Link: https://lkml.kernel.org/r/20210513104831.432975-1-dimitri.ledkov@canonical.com
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Cc: Kyungsik Lee <kyungsik.lee@lge.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Bongkyu Kim <bongkyu.kim@lge.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Sven Schmidt <4sschmid@informatik.uni-hamburg.de>
Cc: Rajat Asthana <thisisrast7@gmail.com>
Cc: Nick Terrell <terrelln@fb.com>
Cc: Gao Xiang <hsiangkao@redhat.com>
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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[ Upstream commit 8c13212443230d03ff25014514ec0d53498c0912 ]
The function hda_tegra_first_init() neglects to check the return
value after executing platform_get_irq().
hda_tegra_first_init() should check the return value (if negative
error number) for errors so as to not pass a negative value to
the devm_request_irq().
Fix it by adding a check for the return value irq_id.
Signed-off-by: Jiajun Cao <jjcao20@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20210622131947.94346-1-jjcao20@fudan.edu.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit b9481a667a90ec739995e85f91f3672ca44d6ffa ]
According to <linux/backlight.h> .update_status() is supposed to
return 0 on success and a negative error code otherwise. Adapt
lm3630a_bank_a_update_status() and lm3630a_bank_b_update_status() to
actually do it.
While touching that also add the error code to the failure message.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit c93f80849bdd9b45d834053ae1336e28f0026c84 ]
This fixes the core devtree.c functions and the ns16550 UART backend.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/YMwXrPT8nc4YUdJ9@thinks.paulus.ozlabs.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 88693f770bb09c196b1eb5f06a484a254ecb9924 ]
Fix to return a negative error code from the error handling
case instead of 0.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210618043835.2641360-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 33cb46c4676d01956811b68a29157ea969a5df70 ]
Running sparse checker it shows warning message about
incorrect endianness used for descriptor initialization:
| f_hid.c:91:43: warning: incorrect type in initializer (different base types)
| f_hid.c:91:43: expected restricted __le16 [usertype] bcdHID
| f_hid.c:91:43: got int
Fixing issue with cpu_to_le16() macro, however this is not a real issue
as the value is the same both endians.
Cc: Fabien Chouteau <fabien.chouteau@barco.com>
Cc: Segiy Stetsyuk <serg_stetsuk@ukr.net>
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com>
Link: https://lore.kernel.org/r/20210617162755.29676-1-ruslan.bilovol@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 50ebe56222bfa0911a932930f9229ee5995508d9 ]
A user of FFADO project reported the issue of ToneWeal FW66. As a result,
the device is identified as one of applications of BeBoB solution.
I note that in the report the device returns contradictory result in plug
discovery process for audio subunit. Fortunately ALSA BeBoB driver doesn't
perform it thus it's likely to handle the device without issues.
I receive no reaction to test request for this patch yet, however it would
be worth to add support for it.
daniel@gibbonmoon:/sys/bus/firewire/devices/fw1$ grep -r . *
Binary file config_rom matches
dev:244:1
guid:0x0023270002000000
hardware_version:0x000002
is_local:0
model:0x020002
model_name:FW66
power/runtime_active_time:0
power/runtime_active_kids:0
power/runtime_usage:0
power/runtime_status:unsupported
power/async:disabled
power/runtime_suspended_time:0
power/runtime_enabled:disabled
power/control:auto
subsystem/drivers_autoprobe:1
uevent:MAJOR=244
uevent:MINOR=1
uevent:DEVNAME=fw1
units:0x00a02d:0x010001
vendor:0x002327
vendor_name:ToneWeal
fw1.0/uevent:MODALIAS=ieee1394:ven00002327mo00020002sp0000A02Dver00010001
fw1.0/power/runtime_active_time:0
fw1.0/power/runtime_active_kids:0
fw1.0/power/runtime_usage:0
fw1.0/power/runtime_status:unsupported
fw1.0/power/async:disabled
fw1.0/power/runtime_suspended_time:0
fw1.0/power/runtime_enabled:disabled
fw1.0/power/control:auto
fw1.0/model:0x020002
fw1.0/rom_index:15
fw1.0/specifier_id:0x00a02d
fw1.0/model_name:FW66
fw1.0/version:0x010001
fw1.0/modalias:ieee1394:ven00002327mo00020002sp0000A02Dver00010001
Cc: Daniel Jozsef <daniel.jozsef@gmail.com>
Reference: https://lore.kernel.org/alsa-devel/20200119164335.GA11974@workstation/
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210619083922.16060-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 7d3865a10b9ff2669c531d5ddd60bf46b3d48f1e ]
When devm_kcalloc() fails, the error code -ENOMEM should be returned
instead of -EINVAL.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210617103729.1918-1-thunder.leizhen@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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