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| author | Dave Airlie <airlied@redhat.com> | 2016-03-14 09:42:34 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2016-03-14 09:46:02 +1000 |
| commit | 9b61c0fcdf0cfd20a85d9856d46142e7f297de0a (patch) | |
| tree | d4abe6aa3f4e1e088f9da1d0597e078b1fe58912 /kernel/trace/trace_stack.c | |
| parent | 550e3b23a53c88adfa46e64f9d442743e65d47da (diff) | |
| parent | 125234dc8b1cc862f52d8bd5b37c36cc59b2cb86 (diff) | |
| download | linux-9b61c0fcdf0cfd20a85d9856d46142e7f297de0a.tar.bz2 | |
Merge drm-fixes into drm-next.
Nouveau wanted this to avoid some worse conflicts when I merge that.
Diffstat (limited to 'kernel/trace/trace_stack.c')
| -rw-r--r-- | kernel/trace/trace_stack.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index 202df6cffcca..2a1abbaca10e 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -156,7 +156,11 @@ check_stack(unsigned long ip, unsigned long *stack) for (; p < top && i < stack_trace_max.nr_entries; p++) { if (stack_dump_trace[i] == ULONG_MAX) break; - if (*p == stack_dump_trace[i]) { + /* + * The READ_ONCE_NOCHECK is used to let KASAN know that + * this is not a stack-out-of-bounds error. + */ + if ((READ_ONCE_NOCHECK(*p)) == stack_dump_trace[i]) { stack_dump_trace[x] = stack_dump_trace[i++]; this_size = stack_trace_index[x++] = (top - p) * sizeof(unsigned long); |