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Date: Mon, 4 May 2020 19:57:11 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Theodore Tso <tytso@....edu>, Dan Carpenter <dan.carpenter@...cle.com>, stable@...nel.org, Guenter Roeck <linux@...ck-us.net> Subject: [PATCH 4.9 01/18] ext4: fix special inode number checks in __ext4_iget() From: Theodore Ts'o <tytso@....edu> commit 191ce17876c9367819c4b0a25b503c0f6d9054d8 upstream. The check for special (reserved) inode number checks in __ext4_iget() was broken by commit 8a363970d1dc: ("ext4: avoid declaring fs inconsistent due to invalid file handles"). This was caused by a botched reversal of the sense of the flag now known as EXT4_IGET_SPECIAL (when it was previously named EXT4_IGET_NORMAL). Fix the logic appropriately. Fixes: 8a363970d1dc ("ext4: avoid declaring fs inconsistent...") Signed-off-by: Theodore Ts'o <tytso@....edu> Reported-by: Dan Carpenter <dan.carpenter@...cle.com> Cc: stable@...nel.org Cc: Guenter Roeck <linux@...ck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- fs/ext4/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4494,7 +4494,7 @@ struct inode *__ext4_iget(struct super_b gid_t i_gid; projid_t i_projid; - if (((flags & EXT4_IGET_NORMAL) && + if ((!(flags & EXT4_IGET_SPECIAL) && (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO)) || (ino < EXT4_ROOT_INO) || (ino > le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))) {
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