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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-27 09:22:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-27 09:22:08 +0200 |
| commit | bdac4d8abbfc239886103f7c6ee03abb8011a008 (patch) | |
| tree | fda39ff9008b28d574ccd647f41a243183663127 /arch/riscv/kernel/stacktrace.c | |
| parent | e7deeb9d79d8691f1e6c4c6707471ec3d7b9886b (diff) | |
| parent | ff1176468d368232b684f75e82563369208bc371 (diff) | |
Merge 5.14-rc3 into driver-core-next
We need the driver-core fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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; } |