| Message ID | 1389190820-11404-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index b3621cb..74f4688 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1449,6 +1449,7 @@ 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;
This is a note to let you know that I have just added a patch titled ext2: Fix oops in ext2_get_block() called from ext2_quota_write() to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 8b3ceacac1f5cc25bd5ebb151605b8210a662935 Mon Sep 17 00:00:00 2001 From: Jan Kara <jack@suse.cz> Date: Tue, 3 Dec 2013 11:20:06 +0100 Subject: ext2: Fix oops in ext2_get_block() called from ext2_quota_write() commit df4e7ac0bb70abc97fbfd9ef09671fc084b3f9db upstream. 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. Reviewed-by: "Theodore Ts'o" <tytso@mit.edu> Reviewed-by: Christoph Hellwig <hch@lst.de> Reported-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- fs/ext2/super.c | 1 + 1 file changed, 1 insertion(+) -- 1.8.3.2