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| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-04-29 14:40:43 +0800 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-05-27 09:33:43 -0700 |
| commit | 7c61c35bbd6a888416e5a6de8ff8782a70d013d4 (patch) | |
| tree | d062095fadf78cede1c32b05ceb42f05ad98d234 /mm/memfd.c | |
| parent | 4c6bdb36408fbe4697eb9f1d95a3ddc1d2348448 (diff) | |
| download | linux-stable-7c61c35bbd6a888416e5a6de8ff8782a70d013d4.tar.gz linux-stable-7c61c35bbd6a888416e5a6de8ff8782a70d013d4.tar.bz2 linux-stable-7c61c35bbd6a888416e5a6de8ff8782a70d013d4.zip | |
mm/z3fold: fix possible null pointer dereferencing
alloc_slots could fail to allocate memory under heavy memory pressure. So
we should check zhdr->slots against NULL to avoid future null pointer
dereferencing.
Link: https://lkml.kernel.org/r/20220429064051.61552-3-linmiaohe@huawei.com
Fixes: fc5488651c7d ("z3fold: simplify freeing slots")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memfd.c')
0 files changed, 0 insertions, 0 deletions