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| author | Theodore Ts'o <tytso@mit.edu> | 2019-05-22 10:27:01 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-16 08:22:24 +0200 |
| commit | 97fbf573460e56ddf172614f70cdfa2af03b20ea (patch) | |
| tree | 3a158c81c3f6847960933a84046b7b4c923e9064 /fs | |
| parent | 1e88a1f874ca5c5c449dd1580c02aaeda60b6485 (diff) | |
| download | linux-stable-97fbf573460e56ddf172614f70cdfa2af03b20ea.tar.gz linux-stable-97fbf573460e56ddf172614f70cdfa2af03b20ea.tar.bz2 linux-stable-97fbf573460e56ddf172614f70cdfa2af03b20ea.zip | |
ext4: don't perform block validity checks on the journal inode
[ Upstream commit 0a944e8a6c66ca04c7afbaa17e22bf208a8b37f0 ]
Since the journal inode is already checked when we added it to the
block validity's system zone, if we check it again, we'll just trigger
a failure.
This was causing failures like this:
[ 53.897001] EXT4-fs error (device sda): ext4_find_extent:909: inode
#8: comm jbd2/sda-8: pblk 121667583 bad header/extent: invalid extent entries - magic f30a, entries 8, max 340(340), depth 0(0)
[ 53.931430] jbd2_journal_bmap: journal block not found at offset 49 on sda-8
[ 53.938480] Aborting journal on device sda-8.
... but only if the system was under enough memory pressure that
logical->physical mapping for the journal inode gets pushed out of the
extent cache. (This is why it wasn't noticed earlier.)
Fixes: 345c0dbf3a30 ("ext4: protect journal inode's blocks using block_validity")
Reported-by: Dan Rue <dan.rue@linaro.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext4/extents.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 45aea792d22a..00bf0b67aae8 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -518,10 +518,14 @@ __read_extent_tree_block(const char *function, unsigned int line, } if (buffer_verified(bh) && !(flags & EXT4_EX_FORCE_CACHE)) return bh; - err = __ext4_ext_check(function, line, inode, - ext_block_hdr(bh), depth, pblk); - if (err) - goto errout; + if (!ext4_has_feature_journal(inode->i_sb) || + (inode->i_ino != + le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_journal_inum))) { + err = __ext4_ext_check(function, line, inode, + ext_block_hdr(bh), depth, pblk); + if (err) + goto errout; + } set_buffer_verified(bh); /* * If this is a leaf block, cache all of its entries |