The patch titled
Subject: lib/stackdepot.c: allow the stack trace hash to be zero
has been added to the -mm tree. Its filename is
lib-stackdepotc-allow-the-stack-trace-hash-to-be-zero.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/lib-stackdepotc-allow-the-stack-trace-hash-to-be-zero.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/lib-stackdepotc-allow-the-stack-trace-hash-to-be-zero.patch
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------------------------------------------------------
From: Alexander Potapenko <glider@xxxxxxxxxx>
Subject: 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@xxxxxxx>
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/stackdepot.c | 4 ----
1 file changed, 4 deletions(-)
diff -puN lib/stackdepot.c~lib-stackdepotc-allow-the-stack-trace-hash-to-be-zero lib/stackdepot.c
--- a/lib/stackdepot.c~lib-stackdepotc-allow-the-stack-trace-hash-to-be-zero
+++ a/lib/stackdepot.c
@@ -210,10 +210,6 @@ depot_stack_handle_t depot_save_stack(st
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];
/*
_
Patches currently in -mm which might be from glider@xxxxxxxxxx are
lib-stackdepotc-allow-the-stack-trace-hash-to-be-zero.patch
mm-kasan-initial-memory-quarantine-implementation.patch
mm-kasan-initial-memory-quarantine-implementation-v8.patch
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