From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Kirby Subject: warning and bug on 3.2-rc4 + for-linus from yesterday Date: Fri, 9 Dec 2011 12:39:48 -0800 Message-ID: <20111209203948.GA12378@hostway.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-btrfs@vger.kernel.org Return-path: List-ID: Hello! We recently upgraded our backup server kernel (rsync with snapshots and compression) to Linus git master from yesterday (3.2-rc4+ 09d9673d53005) that contains the btrfs for-linus as of yesterday. We've been seeing a few warnings and bugs: ------------[ cut here ]------------ WARNING: at mm/page-writeback.c:1763 __set_page_dirty_nobuffers+0x17b/0x190() Hardware name: PowerEdge 1950 Modules linked in: ipmi_devintf ipmi_si ipmi_msghandler aoe bnx2 Pid: 14299, comm: btrfs-delalloc- Tainted: G W 3.2.0-rc4-hw+ #71 Call Trace: [] ? __set_page_dirty_nobuffers+0x17b/0x190 [] warn_slowpath_common+0x80/0xc0 [] warn_slowpath_null+0x15/0x20 [] __set_page_dirty_nobuffers+0x17b/0x190 [] compress_file_range+0x535/0x5e0 [] ? kfree+0xee/0x120 [] async_cow_start+0x30/0x50 [] worker_loop+0x173/0x530 [] ? btrfs_queue_worker+0x310/0x310 [] ? btrfs_queue_worker+0x310/0x310 [] kthread+0x96/0xb0 [] kernel_thread_helper+0x4/0x10 [] ? kthread_worker_fn+0x190/0x190 [] ? gs_change+0x13/0x13 ---[ end trace 52453f1ad38744b8 ]--- (several hours later) ------------[ cut here ]------------ kernel BUG at fs/btrfs/inode.c:1587! invalid opcode: 0000 [#1] SMP CPU 2 Modules linked in: ipmi_devintf ipmi_si ipmi_msghandler aoe bnx2 Pid: 4477, comm: btrfs-fixup-0 Tainted: G W 3.2.0-rc4-hw+ #71 Dell Inc. PowerEdge 1950/0NK937 RIP: 0010:[] [] btrfs_writepage_fixup_worker+0x160/0x170 RSP: 0018:ffff88040ff1dde0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000013d6000 RCX: 0000000000000000 RDX: 0000000000000065 RSI: 00000000013d6000 RDI: ffff8800996fe8e0 RBP: ffff88040ff1de30 R08: ffff88040ff1dd34 R09: ffff88040ff1dda0 R10: dead000000200200 R11: 0000000000000000 R12: ffffea000ea54840 R13: 00000000013d6fff R14: ffff8800996fe9b0 R15: ffff8800996fe850 FS: 0000000000000000(0000) GS:ffff88043fc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000002051c80 CR3: 0000000427492000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process btrfs-fixup-0 (pid: 4477, threadinfo ffff88040ff1c000, task ffff8804135b9630) Stack: ffffffff8106b2c0 ffff880261a9bae0 0000000000000000 0000000000000286 ffff8801b10103f0 ffff880261a9bae8 ffff880261a9bb10 ffff880412f606c0 ffff880412f60710 ffff880412f606d8 ffff88040ff1dee0 ffffffff813220a3 Call Trace: [] ? del_timer+0xd0/0xd0 [] worker_loop+0x173/0x530 [] ? btrfs_queue_worker+0x310/0x310 [] ? btrfs_queue_worker+0x310/0x310 [] kthread+0x96/0xb0 [] kernel_thread_helper+0x4/0x10 [] ? kthread_worker_fn+0x190/0x190 [] ? gs_change+0x13/0x13 Code: 5d 41 5e 41 5f c9 c3 0f 1f 40 00 48 8d 4d d0 41 b8 50 00 00 00 4c 89 ea 48 89 de 4c 89 ff e8 f8 c1 01 00 eb ba 66 0f 1f 44 00 00 <0f> 0b eb fe 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 RIP [] btrfs_writepage_fixup_worker+0x160/0x170 RSP ---[ end trace 52453f1ad38744b9 ]--- Simon-