Files
linux/fs
Christoph Hellwig dc60992ce7 xfs: fix finding a last resort AG in xfs_filestream_pick_ag
When the main loop in xfs_filestream_pick_ag fails to find a suitable
AG it tries to just pick the online AG.  But the loop for that uses
args->pag as loop iterator while the later code expects pag to be
set.  Fix this by reusing the max_pag case for this last resort, and
also add a check for impossible case of no AG just to make sure that
the uninitialized pag doesn't even escape in theory.

Reported-by: syzbot+4125a3c514e3436a02e6@syzkaller.appspotmail.com
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: syzbot+4125a3c514e3436a02e6@syzkaller.appspotmail.com
Fixes: f8f1ed1ab3 ("xfs: return a referenced perag from filestreams allocator")
Cc: <stable@vger.kernel.org> # v6.3
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
2024-10-30 11:27:18 +01:00
..
2024-09-12 12:20:41 +02:00
2024-09-23 15:03:30 -04:00
2024-05-28 11:52:53 +02:00
2024-08-21 22:32:58 +02:00
2024-04-23 13:27:43 +02:00
2024-08-28 13:05:39 +02:00
2024-09-27 08:18:43 -07:00
2024-09-27 18:29:19 +02:00
2024-09-27 08:18:43 -07:00
2024-05-02 16:28:20 +02:00