The commit is pushed to "branch-rh7-3.10.0-693.1.1.vz7.37.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-693.1.1.vz7.37.4
------>
commit d44320c014859863317b1e1885a2d274fba8cea9
Author: Alexander Potapenko <gli...@google.com>
Date: Fri Sep 15 17:17:49 2017 +0300
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....@lge.com>
Signed-off-by: Alexander Potapenko <gli...@google.com>
Acked-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
https://jira.sw.ru/browse/PSBM-69081
(cherry picked from commit 33334e25769c6ad69b983379578f42581d99a2f9)
Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.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];
/*
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