diff options
| author | Dave Airlie <airlied@redhat.com> | 2018-01-18 09:32:15 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2018-01-18 09:32:15 +1000 |
| commit | 4a6cc7a44e98a0460bd094b68c75f0705fdc450a (patch) | |
| tree | b8c86a1e0342b1166ab52c4d79e404eede57abec /arch/x86/kernel/stacktrace.c | |
| parent | 8563188e37b000979ab66521f4337df9a3453223 (diff) | |
| parent | a8750ddca918032d6349adbf9a4b6555e7db20da (diff) | |
| download | linux-4a6cc7a44e98a0460bd094b68c75f0705fdc450a.tar.bz2 | |
BackMerge tag 'v4.15-rc8' into drm-next
Linux 4.15-rc8
Daniel requested this for so the intel CI won't fall over on drm-next
so often.
Diffstat (limited to 'arch/x86/kernel/stacktrace.c')
| -rw-r--r-- | arch/x86/kernel/stacktrace.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kernel/stacktrace.c b/arch/x86/kernel/stacktrace.c index 77835bc021c7..093f2ea5dd56 100644 --- a/arch/x86/kernel/stacktrace.c +++ b/arch/x86/kernel/stacktrace.c @@ -102,7 +102,7 @@ __save_stack_trace_reliable(struct stack_trace *trace, for (unwind_start(&state, task, NULL, NULL); !unwind_done(&state); unwind_next_frame(&state)) { - regs = unwind_get_entry_regs(&state); + regs = unwind_get_entry_regs(&state, NULL); if (regs) { /* * Kernel mode registers on the stack indicate an @@ -164,8 +164,12 @@ int save_stack_trace_tsk_reliable(struct task_struct *tsk, { int ret; + /* + * If the task doesn't have a stack (e.g., a zombie), the stack is + * "reliably" empty. + */ if (!try_get_task_stack(tsk)) - return -EINVAL; + return 0; ret = __save_stack_trace_reliable(trace, tsk); |