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| author |   Jia-Ju Bai <baijiaju1990@gmail.com> | 2021-05-06 18:04:38 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-19 10:08:28 +0200 |
| commit | a8cfa7aff11d2383e7a7a4b581affb496aa213dd (patch) | |
| tree | 35e6c808e52f0f310bd7aeea2aa332c6db080249 /kernel | |
| parent | sched/fair: Fix unfairness caused by missing load decay (diff) | |
| download | wireguard-linux-a8cfa7aff11d2383e7a7a4b581affb496aa213dd.tar.xz wireguard-linux-a8cfa7aff11d2383e7a7a4b581affb496aa213dd.zip | |
kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
[ Upstream commit 31d82c2c787d5cf65fedd35ebbc0c1bd95c1a679 ]
When vzalloc() returns NULL to sha_regions, no error return code of
kexec_calculate_store_digests() is assigned. To fix this bug, ret is
assigned with -ENOMEM in this case.
Link: https://lkml.kernel.org/r/20210309083904.24321-1-baijiaju1990@gmail.com
Fixes: a43cac0d9dc2 ("kexec: split kexec_file syscall code to kexec_file.c")
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Acked-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/kexec_file.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index 4e74db89bd23..b17998fa03f1 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -740,8 +740,10 @@ static int kexec_calculate_store_digests(struct kimage *image) sha_region_sz = KEXEC_SEGMENT_MAX * sizeof(struct kexec_sha_region); sha_regions = vzalloc(sha_region_sz); - if (!sha_regions) + if (!sha_regions) { + ret = -ENOMEM; goto out_free_desc; + } desc->tfm = tfm; |