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.
Fixes: a43cac0d9dc2 ("kexec: split kexec_file syscall code to kexec_file.c")
Reported-by: TOTE Robot <oslab@xxxxxxxxxxxxxxx>
Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
---
kernel/kexec_file.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
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;
--
2.17.1
_______________________________________________
kexec mailing list
kexec@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/kexec
