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lineage-18.1-caf-msm8998
* common/android-4.4-p:
Linux 4.4.293
usb: max-3421: Use driver data instead of maintaining a list of bound devices
ASoC: DAPM: Cover regression by kctl change notification fix
batman-adv: Avoid WARN_ON timing related checks
batman-adv: Don't always reallocate the fragmentation skb head
batman-adv: Reserve needed_*room for fragments
batman-adv: Consider fragmentation for needed_headroom
batman-adv: set .owner to THIS_MODULE
batman-adv: mcast: fix duplicate mcast packets from BLA backbone to mesh
batman-adv: mcast: fix duplicate mcast packets in BLA backbone from mesh
batman-adv: mcast: fix duplicate mcast packets in BLA backbone from LAN
batman-adv: Prevent duplicated softif_vlan entry
batman-adv: Fix multicast TT issues with bogus ROAM flags
batman-adv: Keep fragments equally sized
drm/amdgpu: fix set scaling mode Full/Full aspect/Center not works on vga and dvi connectors
drm/udl: fix control-message timeout
cfg80211: call cfg80211_stop_ap when switch from P2P_GO type
parisc/sticon: fix reverse colors
btrfs: fix memory ordering between normal and ordered work functions
mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag
hexagon: export raw I/O routines for modules
tun: fix bonding active backup with arp monitoring
NFC: reorder the logic in nfc_{un,}register_device
NFC: reorganize the functions in nci_request
platform/x86: hp_accel: Fix an error handling path in 'lis3lv02d_probe()'
mips: bcm63xx: add support for clk_get_parent()
net: bnx2x: fix variable dereferenced before check
sched/core: Mitigate race cpus_share_cache()/update_top_cache_domain()
mips: BCM63XX: ensure that CPU_SUPPORTS_32BIT_KERNEL is set
sh: define __BIG_ENDIAN for math-emu
sh: fix kconfig unmet dependency warning for FRAME_POINTER
maple: fix wrong return value of maple_bus_init().
sh: check return code of request_irq
powerpc/dcr: Use cmplwi instead of 3-argument cmpli
ALSA: gus: fix null pointer dereference on pointer block
powerpc/5200: dts: fix memory node unit name
scsi: target: Fix alua_tg_pt_gps_count tracking
scsi: target: Fix ordered tag handling
MIPS: sni: Fix the build
tty: tty_buffer: Fix the softlockup issue in flush_to_ldisc
usb: host: ohci-tmio: check return value after calling platform_get_resource()
ARM: dts: omap: fix gpmc,mux-add-data type
scsi: advansys: Fix kernel pointer leak
usb: musb: tusb6010: check return value after calling platform_get_resource()
scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()
net: batman-adv: fix error handling
PCI/MSI: Destroy sysfs before freeing entries
parisc/entry: fix trace test in syscall exit path
PCI: Add PCI_EXP_DEVCTL_PAYLOAD_* macros
mm, oom: pagefault_out_of_memory: don't force global OOM for dying tasks
ARM: 9156/1: drop cc-option fallbacks for architecture selection
USB: chipidea: fix interrupt deadlock
vsock: prevent unnecessary refcnt inc for nonblocking connect
nfc: pn533: Fix double free when pn533_fill_fragment_skbs() fails
llc: fix out-of-bound array index in llc_sk_dev_hash()
bonding: Fix a use-after-free problem when bond_sysfs_slave_add() failed
net: davinci_emac: Fix interrupt pacing disable
xen-pciback: Fix return in pm_ctrl_init()
scsi: qla2xxx: Turn off target reset during issue_lip
watchdog: f71808e_wdt: fix inaccurate report in WDIOC_GETTIMEOUT
m68k: set a default value for MEMORY_RESERVE
netfilter: nfnetlink_queue: fix OOB when mac header was cleared
dmaengine: at_xdmac: fix AT_XDMAC_CC_PERID() macro
RDMA/mlx4: Return missed an error if device doesn't support steering
scsi: csiostor: Uninitialized data in csio_ln_vnp_read_cbfn()
power: supply: rt5033_battery: Change voltage values to µV
usb: gadget: hid: fix error code in do_config()
serial: 8250_dw: Drop wrong use of ACPI_PTR()
video: fbdev: chipsfb: use memset_io() instead of memset()
memory: fsl_ifc: fix leak of irq and nand_irq in fsl_ifc_ctrl_probe
JFS: fix memleak in jfs_mount
scsi: dc395: Fix error case unwinding
ARM: s3c: irq-s3c24xx: Fix return value check for s3c24xx_init_intc()
crypto: pcrypt - Delay write to padata->info
libertas: Fix possible memory leak in probe and disconnect
libertas_tf: Fix possible memory leak in probe and disconnect
smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi
mwifiex: Send DELBA requests according to spec
platform/x86: thinkpad_acpi: Fix bitwise vs. logical warning
net: stream: don't purge sk_error_queue in sk_stream_kill_queues()
drm/msm: uninitialized variable in msm_gem_import()
memstick: jmb38x_ms: use appropriate free function in jmb38x_ms_alloc_host()
memstick: avoid out-of-range warning
b43: fix a lower bounds test
b43legacy: fix a lower bounds test
crypto: qat - detect PFVF collision after ACK
ath9k: Fix potential interrupt storm on queue reset
cpuidle: Fix kobject memory leaks in error paths
media: si470x: Avoid card name truncation
media: dvb-usb: fix ununit-value in az6027_rc_query
parisc/kgdb: add kgdb_roundup() to make kgdb work with idle polling
parisc: fix warning in flush_tlb_all
ARM: 9136/1: ARMv7-M uses BE-8, not BE-32
ARM: clang: Do not rely on lr register for stacktrace
smackfs: use __GFP_NOFAIL for smk_cipso_doi()
iwlwifi: mvm: disable RX-diversity in powersave
PM: hibernate: Get block device exclusively in swsusp_check()
mwl8k: Fix use-after-free in mwl8k_fw_state_machine()
lib/xz: Validate the value before assigning it to an enum variable
lib/xz: Avoid overlapping memcpy() with invalid input with in-place decompression
memstick: r592: Fix a UAF bug when removing the driver
ACPI: battery: Accept charges over the design capacity as full
ath: dfs_pattern_detector: Fix possible null-pointer dereference in channel_detector_create()
tracefs: Have tracefs directories not set OTH permission bits by default
media: usb: dvd-usb: fix uninit-value bug in dibusb_read_eeprom_byte()
ACPICA: Avoid evaluating methods too early during system resume
ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK
media: mceusb: return without resubmitting URB in case of -EPROTO error.
media: s5p-mfc: fix possible null-pointer dereference in s5p_mfc_probe()
media: uvcvideo: Set capability in s_param
media: netup_unidvb: handle interrupt properly according to the firmware
media: mt9p031: Fix corrupted frame after restarting stream
x86: Increase exception stack sizes
smackfs: Fix use-after-free in netlbl_catmap_walk()
MIPS: lantiq: dma: reset correct number of channel
MIPS: lantiq: dma: add small delay after reset
platform/x86: wmi: do not fail if disabling fails
Bluetooth: fix use-after-free error in lock_sock_nested()
Bluetooth: sco: Fix lock_sock() blockage by memcpy_from_msg()
USB: iowarrior: fix control-message timeouts
USB: serial: keyspan: fix memleak on probe errors
iio: dac: ad5446: Fix ad5622_write() return value
quota: correct error number in free_dqentry()
quota: check block number when reading the block in quota file
ALSA: mixer: fix deadlock in snd_mixer_oss_set_volume
ALSA: mixer: oss: Fix racy access to slots
power: supply: max17042_battery: use VFSOC for capacity when no rsns
power: supply: max17042_battery: Prevent int underflow in set_soc_threshold
signal: Remove the bogus sigkill_pending in ptrace_stop
mwifiex: Read a PCI register after writing the TX ring write pointer
wcn36xx: Fix HT40 capability for 2Ghz band
PCI: Mark Atheros QCA6174 to avoid bus reset
ath6kl: fix control-message timeout
ath6kl: fix division by zero in send path
mwifiex: fix division by zero in fw download path
EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell
hwmon: (pmbus/lm25066) Add offset coefficients
btrfs: fix lost error handling when replaying directory deletes
vmxnet3: do not stop tx queues after netif_device_detach()
spi: spl022: fix Microwire full duplex mode
xen/netfront: stop tx queues during live migration
mmc: winbond: don't build on M68K
hyperv/vmbus: include linux/bitops.h
x86/irq: Ensure PI wakeup handler is unregistered before module unload
ALSA: timer: Unconditionally unlink slave instances, too
ALSA: timer: Fix use-after-free problem
ALSA: synth: missing check for possible NULL after the call to kstrdup
ALSA: line6: fix control and interrupt message timeouts
ALSA: 6fire: fix control and bulk message timeouts
ALSA: ua101: fix division by zero at probe
media: ite-cir: IR receiver stop working after receive overflow
parisc: Fix ptrace check on syscall return
mmc: dw_mmc: Dont wait for DRTO on Write RSP error
ocfs2: fix data corruption on truncate
libata: fix read log timeout value
Input: i8042 - Add quirk for Fujitsu Lifebook T725
Input: elantench - fix misreporting trackpoint coordinates
xhci: Fix USB 3.1 enumeration issues by increasing roothub power-on-good delay
binder: use cred instead of task for selinux checks
binder: use euid from cred instead of using task
FROMGIT: binder: fix test regression due to sender_euid change
BACKPORT: binder: use cred instead of task for selinux checks
BACKPORT: binder: use euid from cred instead of using task
BACKPORT: ip_gre: add validation for csum_start
Linux 4.4.292
rsi: fix control-message timeout
staging: rtl8192u: fix control-message timeouts
staging: r8712u: fix control-message timeout
comedi: vmk80xx: fix bulk and interrupt message timeouts
comedi: vmk80xx: fix bulk-buffer overflow
comedi: vmk80xx: fix transfer-buffer overflows
staging: comedi: drivers: replace le16_to_cpu() with usb_endpoint_maxp()
comedi: ni_usb6501: fix NULL-deref in command paths
comedi: dt9812: fix DMA buffers on stack
isofs: Fix out of bound access for corrupted isofs image
usb: hso: fix error handling code of hso_create_net_device
printk/console: Allow to disable console output by using console="" or console=null
usb-storage: Add compatibility quirk flags for iODD 2531/2541
usb: gadget: Mark USB_FSL_QE broken on 64-bit
IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields
IB/qib: Use struct_size() helper
net: hso: register netdev later to avoid a race condition
ARM: 9120/1: Revert "amba: make use of -1 IRQs warn"
scsi: core: Put LLD module refcnt after SCSI device is released
Linux 4.4.291
sctp: add vtag check in sctp_sf_violation
sctp: use init_tag from inithdr for ABORT chunk
nios2: Make NIOS2_DTB_SOURCE_BOOL depend on !COMPILE_TEST
regmap: Fix possible double-free in regcache_rbtree_exit()
net: lan78xx: fix division by zero in send path
mmc: sdhci: Map more voltage level to SDHCI_POWER_330
mmc: dw_mmc: exynos: fix the finding clock sample value
mmc: vub300: fix control-message timeouts
Revert "net: mdiobus: Fix memory leak in __mdiobus_register"
nfc: port100: fix using -ERRNO as command type mask
ata: sata_mv: Fix the error handling of mv_chip_id()
usbnet: fix error return code in usbnet_probe()
usbnet: sanity check for maxpacket
ARM: 8819/1: Remove '-p' from LDFLAGS
ARM: 9139/1: kprobes: fix arch_init_kprobes() prototype
ARM: 9134/1: remove duplicate memcpy() definition
ARM: 9133/1: mm: proc-macros: ensure *_tlb_fns are 4B aligned
Linux 4.4.290
ARM: 9122/1: select HAVE_FUTEX_CMPXCHG
tracing: Have all levels of checks prevent recursion
net: mdiobus: Fix memory leak in __mdiobus_register
ALSA: hda: avoid write to STATESTS if controller is in reset
platform/x86: intel_scu_ipc: Update timeout value in comment
isdn: mISDN: Fix sleeping function called from invalid context
ARM: dts: spear3xx: Fix gmac node
netfilter: Kconfig: use 'default y' instead of 'm' for bool config option
isdn: cpai: check ctr->cnr to avoid array index out of bound
nfc: nci: fix the UAF of rf_conn_info object
ovl: fix missing negative dentry check in ovl_rename()
ASoC: DAPM: Fix missing kctl change notifications
ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset
elfcore: correct reference to CONFIG_UML
ocfs2: mount fails with buffer overflow in strlen
can: peak_pci: peak_pci_remove(): fix UAF
can: peak_usb: pcan_usb_fd_decode_status(): fix back to ERROR_ACTIVE state notification
can: rcar_can: fix suspend/resume
NIOS2: irqflags: rename a redefined register name
netfilter: ipvs: make global sysctl readonly in non-init netns
NFSD: Keep existing listeners on portlist error
r8152: select CRC32 and CRYPTO/CRYPTO_HASH/CRYPTO_SHA256
drm/msm: Fix null pointer dereference on pointer edp
pata_legacy: fix a couple uninitialized variable bugs
NFC: digital: fix possible memory leak in digital_in_send_sdd_req()
NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()
nfc: fix error handling of nfc_proto_register()
ethernet: s2io: fix setting mac address during resume
net: encx24j600: check error in devm_regmap_init_encx24j600
net: korina: select CRC32
net: arc: select CRC32
iio: ssp_sensors: fix error code in ssp_print_mcu_debug()
iio: ssp_sensors: add more range checking in ssp_parse_dataframe()
iio: adc128s052: Fix the error handling path of 'adc128_probe()'
nvmem: Fix shift-out-of-bound (UBSAN) with byte size cells
USB: serial: option: add Telit LE910Cx composition 0x1204
USB: serial: qcserial: add EM9191 QDL support
Input: xpad - add support for another USB ID of Nacon GC-100
efi/cper: use stack buffer for error record decoding
cb710: avoid NULL pointer subtraction
xhci: Enable trust tx length quirk for Fresco FL11 USB controller
s390: fix strrchr() implementation
ALSA: seq: Fix a potential UAF by wrong private_free call order
Conflicts:
drivers/gpu/drm/msm/msm_gem.c
net/bluetooth/l2cap_sock.c
Change-Id: Ia008e8ba419fa5604b5780265564ba80d05fbafa
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[ Upstream commit b3ea5d56f212ad81328c82454829a736197ebccc ]
Currently the stacktrace on clang compiled arm kernel uses the 'lr'
register to find the first frame address from pt_regs. However, that
is wrong after calling another function, because the 'lr' register
is used by 'bl' instruction and never be recovered.
As same as gcc arm kernel, directly use the frame pointer (r11) of
the pt_regs to find the first frame address.
Note that this fixes kretprobe stacktrace issue only with
CONFIG_UNWINDER_FRAME_POINTER=y. For the CONFIG_UNWINDER_ARM,
we need another fix.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-05900-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
59f04f292e871 ANDROID: fix a bug in quota2
Conflicts:
Makefile
fs/ext4/inode.c
fs/f2fs/dir.c
Change-Id: Ic71b44a02908cf633d96114f0ff745cf1e1186de
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commit b4d5ec9b39f8b31d98f65bc5577b5d15d93795d7 upstream.
Since clang does not push pc and sp in function prologues, the current
implementation of unwind_frame does not work. By using the previous
frame's lr/fp instead of saved pc/sp we get valid unwinds on clang-built
kernels.
The bounds check on next frame pointer must be changed as well since
there are 8 less bytes between frames.
This fixes /proc/<pid>/stack.
Link: https://github.com/ClangBuiltLinux/linux/issues/912
Reported-by: Miles Chen <miles.chen@mediatek.com>
Tested-by: Miles Chen <miles.chen@mediatek.com>
Cc: stable@vger.kernel.org
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The kernel watchdog is a great debugging tool for finding tasks that
consume a disproportionate amount of CPU time in contiguous chunks. One
can imagine building a similar watchdog for arbitrary driver threads
using save_stack_trace_tsk() and print_stack_trace(). However, this is
not viable for dynamically loaded driver modules on ARM platforms
because save_stack_trace_tsk() is not exported for those architectures.
Export save_stack_trace_tsk() for the ARM64 architecture to align with
x86 and support various debugging use cases such as arbitrary driver
thread watchdog timers.
Change-Id: I61e9d2afc4703a786fa6dcaf82fe46c0ed250045
CRs-Fixed: 2061326
Signed-off-by: Dustin Brown <dustinb@codeaurora.org>
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When a process A unwind the stack frame of process B,
the stack of B can be modified and updated in other CPU
concurrently. So KASan could examine stack address with
out of date shadow mask value. To avoid this incorrect
KASan report, disable KASan during unwinding a frame of
a different task.
Following is the Kasan error log for the reference.
==================================================================
BUG: KASan: out of bounds access in unwind_frame+0x9c/0xf8 at addr ffffffc0462b76f0
Read of size 8 by task Signal Catcher/1282
page:ffffffbac7bdb260 count:0 mapcount:0 mapping: (null) index:0x0
flags: 0x0()
page dumped because: kasan: bad access detected
Call trace:
[<ffffffc00008c010>] dump_backtrace+0x0/0x250
[<ffffffc00008c270>] show_stack+0x10/0x1c
[<ffffffc001b6e628>] dump_stack+0x74/0xfc
[<ffffffc0002dd7c4>] kasan_report_error+0x2b0/0x408
[<ffffffc0002dd9f8>] kasan_report+0x34/0x40
[<ffffffc0002dda78>] __asan_report_load8_noabort+0x14/0x20
[<ffffffc00008b984>] unwind_frame+0x98/0xf8
[<ffffffc00008ba14>] walk_stackframe+0x30/0x48
[<ffffffc00008bba4>] save_stack_trace_tsk+0x178/0x254
[<ffffffc0003a5bc4>] proc_pid_stack+0xf0/0x198
[<ffffffc0003a11b0>] proc_single_show+0xe8/0x130
[<ffffffc000330e0c>] seq_read+0x524/0xaf0
[<ffffffc0002e9c74>] vfs_read+0x120/0x270
[<ffffffc0002eb208>] SyS_read+0xec/0x198
Memory state around the buggy address:
ffffffc0462b7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffffc0462b7600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffc0462b7680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
^
ffffffc0462b7700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffffc0462b7780: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00
==================================================================
Change-Id: I0e35e6721417fa7a5bffb41be67443cd906e256a
Signed-off-by: Se Wang (Patrick) Oh <sewango@codeaurora.org>
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Use the global current_stack_pointer to get the value of the stack pointer.
This change supports being able to compile the kernel with both gcc and clang.
Signed-off-by: Behan Webster <behanw@converseincode.com>
Reviewed-by: Mark Charlebois <charlebm@gmail.com>
Reviewed-by: Jan-Simon Möller <dl9pf@gmx.de>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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When configure kprobe events of ftrace with "stacktrace" option enabled
in arm, there is no stacktrace was recorded after the kprobe event was
triggered. The root cause is no save_stack_trace_regs() function implemented.
Implement the save_stack_trace_regs() function in arm, then ftrace will
call this architecture-related function to record the stacktrace into
ring buffer.
After this fix, stacktrace can be recorded, for example:
# mount -t debugfs nodev /sys/kernel/debug
# echo "p:netrx net_rx_action" >> /sys/kernel/debug/tracing/kprobe_events
# echo 1 > /sys/kernel/debug/tracing/events/kprobes/netrx/enable
# echo 1 > /sys/kernel/debug/tracing/options/stacktrace
# echo 1 > /sys/kernel/debug/tracing/tracing_on
# ping 127.0.0.1 -c 1
# echo 0 > /sys/kernel/debug/tracing/tracing_on
# cat /sys/kernel/debug/tracing/trace
# tracer: nop
#
# entries-in-buffer/entries-written: 12/12 #P:1
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
<------ missing some entries ---------------->
ping-1200 [000] dNs1 667.603250: netrx: (net_rx_action+0x0/0x1f8)
ping-1200 [000] dNs1 667.604738: <stack trace>
=> net_rx_action
=> do_softirq
=> local_bh_enable
=> ip_finish_output
=> ip_output
=> ip_local_out
=> ip_send_skb
=> ip_push_pending_frames
=> raw_sendmsg
=> inet_sendmsg
=> sock_sendmsg
=> SyS_sendto
=> ret_fast_syscall
Signed-off-by: Lin Yongting <linyongting@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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When we unwind through an exception stack, include the saved PC value
into the stack trace: this fills in an otherwise missed functions from
the trace (as indicated below):
[<c03f4424>] fec_enet_interrupt+0xa0/0xe8
[<c0066c0c>] handle_irq_event_percpu+0x68/0x228
[<c0066e18>] handle_irq_event+0x4c/0x6c
[<c006a024>] handle_fasteoi_irq+0xac/0x198
[<c00664b0>] generic_handle_irq+0x4c/0x60
[<c000f014>] handle_IRQ+0x40/0x98
[<c0008554>] gic_handle_irq+0x30/0x64
[<c0012900>] __irq_svc+0x40/0x50
[<c0029030>] __do_softirq+0xe0/0x2fc <====
[<c0029500>] irq_exit+0xb0/0x100
[<c000f018>] handle_IRQ+0x44/0x98
[<c0008554>] gic_handle_irq+0x30/0x64
[<c0012900>] __irq_svc+0x40/0x50
[<c000f34c>] arch_cpu_idle+0x30/0x38 <====
[<c005e1e4>] cpu_startup_entry+0xac/0x214
[<c066297c>] rest_init+0x68/0x80
[<c08ccb10>] start_kernel+0x2fc/0x358
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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While debugging the FEC ethernet driver using stacktrace, it was noticed
that the stacktraces always begin as follows:
[<c00117b4>] save_stack_trace_tsk+0x0/0x98
[<c0011870>] save_stack_trace+0x24/0x28
...
This is because the stack trace code includes the stack frames for itself.
This is incorrect behaviour, and also leads to "skip" doing the wrong
thing (which is the number of stack frames to avoid recording.)
Perversely, it does the right thing when passed a non-current thread. Fix
this by ensuring that we have a known constant number of frames above the
main stack trace function, and always skip these.
Cc: <stable@vger.kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This patch fixes corner case when (fp + 4) overflows unsigned long,
for example: fp = 0xFFFFFFFF -> fp + 4 == 3.
Cc: <stable@vger.kernel.org>
Signed-off-by: Konstantin Khlebnikov <k.khlebnikov@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Many of the core ARM kernel files are not modules, but just
including module.h for exporting symbols. Now these files can
use the lighter footprint export.h for this role.
There are probably lots more, but ARM files of mach-* and plat-*
don't get coverage via a simple yesconfig build. They will have
to be cleaned up and tested via using their respective configs.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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Rabin Vincent reports:
| On SMP, this BUG() in save_stack_trace_tsk() can be easily triggered
| from user space by reading /proc/$PID/stack, where $PID is any pid but
| the current process:
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| if (tsk != current) {
| #ifdef CONFIG_SMP
| /*
| * What guarantees do we have here that 'tsk'
| * is not running on another CPU?
| */
| BUG();
| #else
Fix this by replacing the BUG() with an entry to terminate the stack
trace, returning an empty trace - I'd rather not expose the dwarf
unwinder to a volatile stack of a running thread.
Reported-by: Rabin Vincent <rabin@rab.in>
Tested-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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When unwinding stack frames we must take care not to unwind
areas of memory that lie outside of the known extent of the stack.
This patch fixes an incorrect calculation of the stack base where
THREAD_SIZE is added to the stack pointer after it has already
been aligned to this value. Since the ALIGN macro performs this
addition internally, we end up overshooting the base by 8k.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
As __builtin_return_address(n) doesn't work for ARM with n > 0, the
kernel needs its own implementation.
This fixes many warnings saying:
warning: unsupported argument to '__builtin_return_address'
The new methods and walk_stackframe must not be instrumented because
CALLER_ADDRESSx is used in the various tracers and tracing the tracer is
a bad idea.
What's currently missing is an implementation using unwind tables. This
is not fatal though, it's just that the tracers don't get enough
information to be really useful.
Note that if both ARM_UNWIND and FRAME_POINTER are enabled,
walk_stackframe uses unwind information. So in this case the same
implementation is used as when FRAME_POINTER is disabled.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This patch changes the walk_stacktrace and its callers for easier
integration of stack unwinding. The arch/arm/kernel/stacktrace.h file is
also moved to arch/arm/include/asm/stacktrace.h.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core/stacktrace' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
generic-ipi: powerpc/generic-ipi tree build failure
stacktrace: fix build failure on sparc64
stacktrace: export save_stack_trace[_tsk]
stacktrace: fix modular build, export print_stack_trace and save_stack_trace
backtrace: replace timer with tasklet + completions
stacktrace: add saved stack traces to backtrace self-test
stacktrace: print_stack_trace() cleanup
debugging: make stacktrace independent from DEBUG_KERNEL
stacktrace: don't crash on invalid stack trace structs
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Andrew Morton reported this against linux-next:
ERROR: ".save_stack_trace" [tests/backtracetest.ko] undefined!
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Available for !SMP only at the moment.
From Russell:
|Basically, if a thread is running on a CPU, thread_saved_fp() is invalid.
|So, the question is: what guarantees do we have here that 'tsk' is not
|running on another CPU?
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Tested-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
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Fix an oops in the stacktrace code, caused by improper range checking.
We subtract 12 off 'fp' before testing to see if it's below the low
bound. However, if 'fp' were zero before, it becomes a very large
positive number, causing this test to succeed where it should fail.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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oprofile depends on having it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ab1b6f03a10ba1f5638188ab06bf46e33ac3a160 said
- remove the unused task argument to save_stack_trace, it's always current
then broke arm:
arch/arm/kernel/stacktrace.c:56: error: conflicting types for 'save_stack_trace'
include/linux/stacktrace.h:11: error: previous declaration of 'save_stack_trace' was here
arch/arm/kernel/stacktrace.c:56: error: conflicting types for 'save_stack_trace'
include/linux/stacktrace.h:11: error: previous declaration of 'save_stack_trace' was here
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Add support for stacktrace. Use the new stacktrace code with
oprofile instead of it's version; there's no point having
multiple versions of stacktracing in the kernel.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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