From: Wei Yongjun <weiyongjun1@xxxxxxxxxx> 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@xxxxxxxxxx Fixes: b858a4844cfb ("erofs: support superblock checksum") Cc: stable <stable@xxxxxxxxxxxxxxx> # 5.5+ Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx> Reviewed-by: Gao Xiang <xiang@xxxxxxxxxx> Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx> Signed-off-by: Gao Xiang <xiang@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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) {
