$ git bisect bad
0a46ef234756dca04623b7591e8ebb3440622f0b is the first bad commit
commit 0a46ef234756dca04623b7591e8ebb3440622f0b (HEAD)
Author: Jan Kara <j...@suse.cz>
Date: Thu Mar 21 17:26:50 2024 +0100
ext4: do not create EA inode under buffer lock
ext4_xattr_set_entry() creates new EA inodes while holding buffer lock
on the external xattr block. This is problematic as it nests all the
allocation locking (which acquires locks on other buffers) under the
buffer lock. This can even deadlock when the filesystem is corrupted and
e.g. quota file is setup to contain xattr block as data block. Move the
allocation of EA inode out of ext4_xattr_set_entry() into the callers.
Reported-by: syzbot+a43d4f48b8397d0e4...@syzkaller.appspotmail.com
Signed-off-by: Jan Kara <j...@suse.cz>
Link: https://lore.kernel.org/r/20240321162657.27420-2-j...@suse.cz
Signed-off-by: Theodore Ts'o <ty...@mit.edu>
fs/ext4/xattr.c | 113
++++++++++++++++++++++++++++++++++---------------------------------------
1 file changed, 53 insertions(+), 60 deletions(-)
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2080853
Title:
oracular 6.11 kernel regression with ext4 and ea_inode mount flags and
exercising xattrs
To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/2080853/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
