* [PATCH v1] lib/stackdepot.c: allow the stack trace hash to be zero
@ 2016-04-12 10:46 Alexander Potapenko
2016-04-13 8:51 ` Andrey Ryabinin
0 siblings, 1 reply; 2+ messages in thread
From: Alexander Potapenko @ 2016-04-12 10:46 UTC (permalink / raw)
To: adech.fo, cl, dvyukov, akpm, ryabinin.a.a, kcc, iamjoonsoo.kim
Cc: kasan-dev, linux-kernel, linux-mm
There's actually no point in reserving the zero hash value.
Reported-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
---
lib/stackdepot.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index 654c9d8..9e0b031 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];
/*
--
2.8.0.rc3.226.g39d4020
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* Re: [PATCH v1] lib/stackdepot.c: allow the stack trace hash to be zero
2016-04-12 10:46 [PATCH v1] lib/stackdepot.c: allow the stack trace hash to be zero Alexander Potapenko
@ 2016-04-13 8:51 ` Andrey Ryabinin
0 siblings, 0 replies; 2+ messages in thread
From: Andrey Ryabinin @ 2016-04-13 8:51 UTC (permalink / raw)
To: Alexander Potapenko
Cc: Andrey Konovalov, Christoph Lameter, Dmitry Vyukov,
Andrew Morton, Kostya Serebryany, Joonsoo Kim, kasan-dev, LKML,
linux-mm
2016-04-12 13:46 GMT+03:00 Alexander Potapenko <glider@google.com>:
> There's actually no point in reserving the zero hash value.
>
> Reported-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
> ---
No sign-off, poor changelog.
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