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authorLinus Torvalds <torvalds@linux-foundation.org>2014-05-13 11:25:56 +0900
committerLinus Torvalds <torvalds@linux-foundation.org>2014-05-13 11:25:56 +0900
commit68cb363a4ddc335fddf6e2ccb03e4a907ba7afbf (patch)
tree636ca2cf21ded393eca9b78d33dcb8e7eefde533 /mm
parentefb2b1d5fdf4be71d63d29b881bf3d6f93f53694 (diff)
parent5a838c3b60e3a36ade764cf7751b8f17d7c9c2da (diff)
Merge branch 'for-3.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
Pull a percpu fix from Tejun Heo: "Fix for a percpu allocator bug where it could try to kfree() a memory region allocated using vmalloc(). The bug has been there for years now and is unlikely to have ever triggered given the size of struct pcpu_chunk. It's still theoretically possible and the fix is simple and safe enough, so the patch is marked with -stable" * 'for-3.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: make pcpu_alloc_chunk() use pcpu_mem_free() instead of kfree()
Diffstat (limited to 'mm')
-rw-r--r--mm/percpu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/percpu.c b/mm/percpu.c
index 63e24fb4387b..2ddf9a990dbd 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -610,7 +610,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void)
chunk->map = pcpu_mem_zalloc(PCPU_DFL_MAP_ALLOC *
sizeof(chunk->map[0]));
if (!chunk->map) {
- kfree(chunk);
+ pcpu_mem_free(chunk, pcpu_chunk_struct_size);
return NULL;
}