diff options
| author | Jan Kara <[email protected]> | 2013-12-03 11:20:06 +0100 |
|---|---|---|
| committer | Jan Kara <[email protected]> | 2013-12-04 12:26:51 +0100 |
| commit | df4e7ac0bb70abc97fbfd9ef09671fc084b3f9db (patch) | |
| tree | 6ef8a1afad4806126e1e8533d27be4b4340db982 | |
| parent | dea4f48a0a301b23c65af8e4fe8ccf360c272fbf (diff) | |
ext2: Fix oops in ext2_get_block() called from ext2_quota_write()
ext2_quota_write() doesn't properly setup bh it passes to
ext2_get_block() and thus we hit assertion BUG_ON(maxblocks == 0) in
ext2_get_blocks() (or we could actually ask for mapping arbitrary number
of blocks depending on whatever value was on stack).
Fix ext2_quota_write() to properly fill in number of blocks to map.
CC: [email protected] # >= 2.6.12
Reviewed-by: "Theodore Ts'o" <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reported-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jan Kara <[email protected]>
| -rw-r--r-- | fs/ext2/super.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 288534920fe5..20d6697bd638 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1493,6 +1493,7 @@ static ssize_t ext2_quota_write(struct super_block *sb, int type, sb->s_blocksize - offset : towrite; tmp_bh.b_state = 0; + tmp_bh.b_size = sb->s_blocksize; err = ext2_get_block(inode, blk, &tmp_bh, 1); if (err < 0) goto out; |