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| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-08-05 16:28:43 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-08-05 16:28:43 +0200 |
| commit | 9c3a0f285248899dfa81585bc5d5bc9ebdb8fead (patch) | |
| tree | 908decd51fbb0e1c774444b002e3b89dee3fae26 /arch/riscv/kernel/stacktrace.c | |
| parent | bfee75f73c37a2f46a6326eaa06f5db701f76f01 (diff) | |
| parent | c500bee1c5b2f1d59b1081ac879d73268ab0ff17 (diff) | |
Merge tag 'v5.14-rc4' into media_tree
Linux 5.14-rc4
* tag 'v5.14-rc4': (948 commits)
Linux 5.14-rc4
pipe: make pipe writes always wake up readers
Revert "perf map: Fix dso->nsinfo refcounting"
mm/memcg: fix NULL pointer dereference in memcg_slab_free_hook()
slub: fix unreclaimable slab stat for bulk free
mm/migrate: fix NR_ISOLATED corruption on 64-bit
mm: memcontrol: fix blocking rstat function called from atomic cgroup1 thresholding code
ocfs2: issue zeroout to EOF blocks
ocfs2: fix zero out valid data
lib/test_string.c: move string selftest in the Runtime Testing menu
gve: Update MAINTAINERS list
arch: Kconfig: clean up obsolete use of HAVE_IDE
can: esd_usb2: fix memory leak
can: ems_usb: fix memory leak
can: usb_8dev: fix memory leak
can: mcba_usb_start(): add missing urb->transfer_dma initialization
can: hi311x: fix a signedness bug in hi3110_cmd()
MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver
scsi: fas216: Fix fall-through warning for Clang
scsi: acornscsi: Fix fall-through warning for clang
...
Diffstat (limited to 'arch/riscv/kernel/stacktrace.c')
| -rw-r--r-- | arch/riscv/kernel/stacktrace.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index ff467b98c3e3..ac7593607fa6 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -132,8 +132,12 @@ unsigned long get_wchan(struct task_struct *task) { unsigned long pc = 0; - if (likely(task && task != current && !task_is_running(task))) + if (likely(task && task != current && !task_is_running(task))) { + if (!try_get_task_stack(task)) + return 0; walk_stackframe(task, NULL, save_wchan, &pc); + put_task_stack(task); + } return pc; } |