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authorJia-Ju Bai <baijiaju1990@gmail.com>2021-05-06 18:04:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-07 00:26:32 -0700
commit31d82c2c787d5cf65fedd35ebbc0c1bd95c1a679 (patch)
tree882429918309678b87081acfe5593c373c60c251 /kernel/kexec_file.c
parenta119b4e5186c283ee13850b65004de6d746a81be (diff)
kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
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>
Diffstat (limited to 'kernel/kexec_file.c')
-rw-r--r--kernel/kexec_file.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 5c3447cf7ad5..33400ff051a8 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;