This is a note to let you know that I've just added the patch titled ext4: fix block validity checks for journal inodes using indirect blocks to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ext4-fix-block-validity-checks-for-journal-inodes-using-indirect-blocks.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 170417c8c7bb2cbbdd949bf5c443c0c8f24a203b Mon Sep 17 00:00:00 2001 From: Theodore Ts'o <tytso@xxxxxxx> Date: Wed, 15 May 2019 00:51:19 -0400 Subject: ext4: fix block validity checks for journal inodes using indirect blocks From: Theodore Ts'o <tytso@xxxxxxx> commit 170417c8c7bb2cbbdd949bf5c443c0c8f24a203b upstream. Commit 345c0dbf3a30 ("ext4: protect journal inode's blocks using block_validity") failed to add an exception for the journal inode in ext4_check_blockref(), which is the function used by ext4_get_branch() for indirect blocks. This caused attempts to read from the ext3-style journals to fail with: [ 848.968550] EXT4-fs error (device sdb7): ext4_get_branch:171: inode #8: block 30343695: comm jbd2/sdb7-8: invalid block Fix this by adding the missing exception check. Fixes: 345c0dbf3a30 ("ext4: protect journal inode's blocks using block_validity") Reported-by: Arthur Marsh <arthur.marsh@xxxxxxxxxxxxxxxx> Signed-off-by: Theodore Ts'o <tytso@xxxxxxx> Signed-off-by: Ashwin H <ashwinh@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/ext4/block_validity.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/fs/ext4/block_validity.c +++ b/fs/ext4/block_validity.c @@ -274,6 +274,11 @@ int ext4_check_blockref(const char *func __le32 *bref = p; unsigned int blk; + if (ext4_has_feature_journal(inode->i_sb) && + (inode->i_ino == + le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_journal_inum))) + return 0; + while (bref < p+max) { blk = le32_to_cpu(*bref++); if (blk && Patches currently in stable-queue which might be from tytso@xxxxxxx are queue-4.4/ext4-avoid-declaring-fs-inconsistent-due-to-invalid-file-handles.patch queue-4.4/ext4-protect-journal-inode-s-blocks-using-block_validity.patch queue-4.4/ext4-convert-bug_on-s-to-warn_on-s-in-mballoc.c.patch queue-4.4/ext4-unsigned-int-compared-against-zero.patch queue-4.4/ext4-fix-block-validity-checks-for-journal-inodes-using-indirect-blocks.patch queue-4.4/ext4-fix-extent_status-fragmentation-for-plain-files.patch queue-4.4/ext4-don-t-perform-block-validity-checks-on-the-journal-inode.patch