erofs: fix error return code in erofs_read_superblock()
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> Change-Id: Ic4ca54cc51b12e814dfc44b569e4bbe354a6e8f7 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>
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@ -155,6 +155,7 @@ static int erofs_read_superblock(struct super_block *sb)
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goto out;
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goto out;
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}
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}
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ret = -EINVAL;
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blkszbits = dsb->blkszbits;
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blkszbits = dsb->blkszbits;
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/* 9(512 bytes) + LOG_SECTORS_PER_BLOCK == LOG_BLOCK_SIZE */
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/* 9(512 bytes) + LOG_SECTORS_PER_BLOCK == LOG_BLOCK_SIZE */
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if (blkszbits != LOG_BLOCK_SIZE) {
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if (blkszbits != LOG_BLOCK_SIZE) {
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