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| author | Dave Airlie <airlied@redhat.com> | 2017-12-19 21:37:24 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-12-19 21:37:24 +1000 |
| commit | 6b7dcb536e3535444c39286333f10d06d2f44fb5 (patch) | |
| tree | 6a4c1e30e5900626e506d46b100d21a2fcd59003 /kernel/trace/trace_stack.c | |
| parent | a942b3c2cddc4378482a427845d15c78eb50f4d4 (diff) | |
| parent | 1291a0d5049dbc06baaaf66a9ff3f53db493b19b (diff) | |
| download | talos-op-linux-6b7dcb536e3535444c39286333f10d06d2f44fb5.tar.gz talos-op-linux-6b7dcb536e3535444c39286333f10d06d2f44fb5.zip | |
BackMerge tag 'v4.15-rc4' into drm-next
Linux 4.15-rc4
Daniel requested it to fix some messy conflicts.
Diffstat (limited to 'kernel/trace/trace_stack.c')
| -rw-r--r-- | kernel/trace/trace_stack.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index 734accc02418..3c7bfc4bf5e9 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -209,6 +209,10 @@ stack_trace_call(unsigned long ip, unsigned long parent_ip, if (__this_cpu_read(disable_stack_tracer) != 1) goto out; + /* If rcu is not watching, then save stack trace can fail */ + if (!rcu_is_watching()) + goto out; + ip += MCOUNT_INSN_SIZE; check_stack(ip, &stack); |
