From: Wei Yongjun weiyongjun1@huawei.com
commit 0508c1ad0f264a24c4643701823a45f6c9bd8146 upstream.
'ret' will be overwritten to 0 if erofs_sb_has_sb_chksum() return true, thus 0 will return in some error handling cases. Fix to return negative error code -EINVAL instead of 0.
Link: https://lore.kernel.org/r/20210519141657.3062715-1-weiyongjun1@huawei.com Fixes: b858a4844cfb ("erofs: support superblock checksum") Cc: stable stable@vger.kernel.org # 5.5+ Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Wei Yongjun weiyongjun1@huawei.com Reviewed-by: Gao Xiang xiang@kernel.org Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Gao Xiang xiang@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- fs/erofs/super.c | 1 + 1 file changed, 1 insertion(+)
--- a/fs/erofs/super.c +++ b/fs/erofs/super.c @@ -155,6 +155,7 @@ static int erofs_read_superblock(struct goto out; }
+ ret = -EINVAL; blkszbits = dsb->blkszbits; /* 9(512 bytes) + LOG_SECTORS_PER_BLOCK == LOG_BLOCK_SIZE */ if (blkszbits != LOG_BLOCK_SIZE) {