diff options
| author | Alexander Potapenko <glider@google.com> | 2016-04-29 01:19:09 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-04-29 04:34:04 +0200 |
| commit | 33334e25769c6ad69b983379578f42581d99a2f9 (patch) | |
| tree | 2155c46b6af3bb6a37909cdb74cb94b4bf071124 /lib/stackdepot.c | |
| parent | rapidio: fix potential NULL pointer dereference (diff) | |
| download | linux-33334e25769c6ad69b983379578f42581d99a2f9.tar.xz linux-33334e25769c6ad69b983379578f42581d99a2f9.zip | |
lib/stackdepot.c: allow the stack trace hash to be zero
Do not bail out from depot_save_stack() if the stack trace has zero hash.
Initially depot_save_stack() silently dropped stack traces with zero
hashes, however there's actually no point in reserving this zero value.
Reported-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Alexander Potapenko <glider@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/stackdepot.c')
| -rw-r--r-- | lib/stackdepot.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/lib/stackdepot.c b/lib/stackdepot.c index 654c9d87e83a..9e0b0315a724 100644 --- a/lib/stackdepot.c +++ b/lib/stackdepot.c @@ -210,10 +210,6 @@ depot_stack_handle_t depot_save_stack(struct stack_trace *trace, goto fast_exit; hash = hash_stack(trace->entries, trace->nr_entries); - /* Bad luck, we won't store this stack. */ - if (hash == 0) - goto exit; - bucket = &stack_table[hash & STACK_HASH_MASK]; /* |