The patch titled
Subject: kernel: kexec_file: fix error return code of kexec_calculate_store_digests()
has been added to the -mm tree. Its filename is
kernel-kexec_file-fix-error-return-code-of-kexec_calculate_store_digests.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kernel-kexec_file-fix-error-return-code-of-kexec_calculate_store_digests.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kernel-kexec_file-fix-error-return-code-of-kexec_calculate_store_digests.patch
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From: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
Subject: 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@xxxxxxxxx
Fixes: a43cac0d9dc2 ("kexec: split kexec_file syscall code to kexec_file.c")
Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
Reported-by: TOTE Robot <oslab@xxxxxxxxxxxxxxx>
Acked-by: Baoquan He <bhe@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/kexec_file.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/kernel/kexec_file.c~kernel-kexec_file-fix-error-return-code-of-kexec_calculate_store_digests
+++ a/kernel/kexec_file.c
@@ -740,8 +740,10 @@ static int kexec_calculate_store_digests
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;
_
Patches currently in -mm which might be from baijiaju1990@xxxxxxxxx are
kernel-kexec_file-fix-error-return-code-of-kexec_calculate_store_digests.patch
