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| author | wuchi <wuchi.zero@gmail.com> | 2022-06-18 11:25:21 +0300 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-07-18 03:31:37 +0300 |
| commit | 5a66fce95b72e6359527415b33a7ae13f0d6b7eb (patch) | |
| tree | 97ce4d8ac30d27286030f33d4a650f54d3223c5f /lib/lru_cache.c | |
| parent | 5a704629f2c1ba33bbb444cb18e6957e97c76e8f (diff) | |
| download | linux-5a66fce95b72e6359527415b33a7ae13f0d6b7eb.tar.xz | |
lib/lru_cache: fix error free handing in lc_create
When kmem_cache_alloc in function lc_create returns null, we will
free the memory already allocated. The loop of kmem_cache_free
is wrong, especially:
i = 0 ==> do wrong loop
i > 0 ==> do not free element[0]
Link: https://lkml.kernel.org/r/20220618082521.7082-1-wuchi.zero@gmail.com
Signed-off-by: wuchi <wuchi.zero@gmail.com>
Cc: Philipp Reisner <philipp.reisner@linbit.com>
Cc: Lars Ellenberg <lars.ellenberg@linbit.com>
Cc: Christoph Bhmwalder <christoph.boehmwalder@linbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/lru_cache.c')
| -rw-r--r-- | lib/lru_cache.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/lru_cache.c b/lib/lru_cache.c index 52313acbfa62..dc35464216d3 100644 --- a/lib/lru_cache.c +++ b/lib/lru_cache.c @@ -147,8 +147,8 @@ struct lru_cache *lc_create(const char *name, struct kmem_cache *cache, return lc; /* else: could not allocate all elements, give up */ - for (i--; i; i--) { - void *p = element[i]; + while (i) { + void *p = element[--i]; kmem_cache_free(cache, p - e_off); } kfree(lc); |