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| author |   Alexey Romanov <avromanov@sberdevices.ru> | 2022-10-13 14:28:25 +0300 |
|---|---|---|
| committer |   Andrew Morton <akpm@linux-foundation.org> | 2022-10-20 21:27:21 -0700 |
| commit | 4249a05ff670e7b1aeea77f1a5451080ea86c88d (patch) | |
| tree | b8a5f83ae93d34f55c4a3119b5d8612691b09705 /mm | |
| parent | mm/mempolicy: fix mbind_range() arguments to vma_merge() (diff) | |
| download | linux-dev-4249a05ff670e7b1aeea77f1a5451080ea86c88d.tar.xz linux-dev-4249a05ff670e7b1aeea77f1a5451080ea86c88d.zip | |
zsmalloc: zs_destroy_pool: add size_class NULL check
Inside the zs_destroy_pool() function, there can still be NULL size_class
pointers: if when the next size_class is allocated, inside
zs_create_pool() function, kzalloc will return NULL and handling the error
condition, zs_create_pool() will call zs_destroy_pool().
Link: https://lkml.kernel.org/r/20221013112825.61869-1-avromanov@sberdevices.ru
Fixes: f24263a5a076 ("zsmalloc: remove unnecessary size_class NULL check")
Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/zsmalloc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 525758713a55..d03941cace2c 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -2311,6 +2311,9 @@ void zs_destroy_pool(struct zs_pool *pool) int fg; struct size_class *class = pool->size_class[i]; + if (!class) + continue; + if (class->index != i) continue; |