Re: 2.6.16-rc5 oops in dm_mirror during pvmove (old bio_clone bug?)

[Adrian Bunk <bunk@stusta.de>]

Let's add the device mapper maintainers to the Cc.

On Wed, Mar 01, 2006 at 11:18:37AM -0000, pete.chapman@exgate.tek.com wrote:
> While doing an overnight pvmove on a ~200G physical volume, disk
> activity by a cron job seems to have provoked an oops. I saw this on a
> 2.6.12 kernel too, and the bug seems to have been around for a while:
> http://lkml.org/lkml/2005/4/1/116
> 
> Mar  1 00:00:00 gallifrey CROND[27778]: (andyh) CMD
> (/home/andyh/bin/scripts/backup.sh >& /home/andyh/misc/backup_cron.log)
> Mar  1 00:00:06 gallifrey kernel: Unable to handle kernel paging request
> at ffffc2001008ec20 RIP:
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff882679c4>{:dm_mirror:core_in_sync+12}
> Mar  1 00:00:06 gallifrey kernel: PGD 23fc4e067 PUD 23fc4f067 PMD
> 23fa6c067 PTE 0
> Mar  1 00:00:06 gallifrey kernel: Oops: 0000 [1] SMP 
> Mar  1 00:00:06 gallifrey kernel: CPU 0 
> Mar  1 00:00:06 gallifrey kernel: Modules linked in: dm_mirror
> binfmt_misc ipt_REJECT xt_mac xt_tcpudp iptable_filter ip_tables
> x_tables nfsd exportfs lockd nfs_acl sunrpc ipv6 nls_iso8859_1 cifs
> rfcomm l2cap bluetooth parport_pc lp parport af_packet floppy video
> thermal processor fan container button battery ac usb_storage libusual
> e1000 ide_cd loop hw_random ehci_hcd uhci_hcd usbcore ext3 jbd ata_piix
> libata dm_mod sd_mod scsi_mod
> Mar  1 00:00:06 gallifrey kernel: Pid: 27782, comm: tar Not tainted
> 2.6.16-rc5.13mdksmp #1
> Mar  1 00:00:06 gallifrey kernel: RIP: 0010:[_end+131774916/2132033536]
> <ffffffff882679c4>{:dm_mirror:core_in_sync+12}
> Mar  1 00:00:06 gallifrey kernel: RIP: 0010:[<ffffffff882679c4>]
> <ffffffff882679c4>{:dm_mirror:core_in_sync+12}
> Mar  1 00:00:06 gallifrey kernel: RSP: 0018:ffff810231981848  EFLAGS:
> 00010202
> Mar  1 00:00:06 gallifrey kernel: RAX: ffff8102396c55e8 RBX:
> 0000000000000000 RCX: 000000000000000a
> Mar  1 00:00:06 gallifrey kernel: RDX: ffffc20010081000 RSI:
> 000000000006e110 RDI: ffff81023c138e68
> Mar  1 00:00:06 gallifrey kernel: RBP: ffff810231981848 R08:
> ffff8101901211b0 R09: 0000000000000000
> Mar  1 00:00:06 gallifrey kernel: R10: ffff81023fd49040 R11:
> ffff81023f714b30 R12: ffff81023f714b30
> Mar  1 00:00:06 gallifrey kernel: R13: ffff810178e13720 R14:
> 0000000000000000 R15: ffff8101d65e6198
> Mar  1 00:00:06 gallifrey kernel: FS:  00002b979cafe6e0(0000)
> GS:ffffffff80472000(0000) knlGS:0000000000000000
> Mar  1 00:00:06 gallifrey kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
> 000000008005003b
> Mar  1 00:00:06 gallifrey kernel: CR2: ffffc2001008ec20 CR3:
> 000000022e2a9000 CR4: 00000000000006e0
> Mar  1 00:00:06 gallifrey kernel: Process tar (pid: 27782, threadinfo
> ffff810231980000, task ffff810233fee140)
> Mar  1 00:00:06 gallifrey kernel: Stack: ffff810231981878
> ffffffff882683f4 0000000000000000 ffff8101f961ada0
> Mar  1 00:00:06 gallifrey kernel:        ffff81023f714b30
> 000000001b844010 ffff8102319818a8 ffffffff88029dc6
> Mar  1 00:00:06 gallifrey kernel:        0000000000000000
> ffffc2000003d0d0
> Mar  1 00:00:06 gallifrey kernel: Call Trace:
> <ffffffff882683f4>{:dm_mirror:mirror_map+87}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff88029dc6>{:dm_mod:__map_bio+68}
> <ffffffff8802a014>{:dm_mod:__split_bio+356}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff8802a3ae>{:dm_mod:dm_request+273}
> <ffffffff801d9837>{generic_make_request+348}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff88029dd6>{:dm_mod:__map_bio+84}
> <ffffffff8802a014>{:dm_mod:__split_bio+356}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff8802a3ae>{:dm_mod:dm_request+273}
> <ffffffff801d9837>{generic_make_request+348}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff801d9cfb>{submit_bio+191} <ffffffff8017d0eb>{submit_bh+263}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff8805b948>{:ext3:__ext3_get_inode_loc+680}
> <ffffffff8805d24a>{:ext3:ext3_read_inode+56}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff880622b9>{:ext3:ext3_lookup+120}
> <ffffffff80191743>{d_lookup+40}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff8018891d>{do_lookup+197}
> <ffffffff8018934d>{__link_path_walk+2433}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff801898a0>{link_path_walk+103}
> <ffffffff801e5230>{_atomic_dec_and_lock+52}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff801943dd>{mntput_no_expire+27}
> <ffffffff80189ede>{do_path_lookup+607}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff8018a52c>{__user_walk_fd+63}
> <ffffffff8018360e>{vfs_lstat_fd+33}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff801e5230>{_atomic_dec_and_lock+52}
> <ffffffff801943dd>{mntput_no_expire+27}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff80183c43>{sys_newlstat+34} <ffffffff8017bef1>{fput+20}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff80179799>{filp_close+98} <ffffffff8017a097>{sys_close+147}
> Mar  1 00:00:06 gallifrey kernel:
> <ffffffff8010a7e6>{system_call+126}
> Mar  1 00:00:06 gallifrey kernel:
> Mar  1 00:00:06 gallifrey kernel: Code: 0f a3 32 19 c0 85 c0 c9 0f 95 c0
> 0f b6 c0 c3 48 8b 4f 08 55
> Mar  1 00:00:06 gallifrey kernel: RIP
> <ffffffff882679c4>{:dm_mirror:core_in_sync+12} RSP <ffff810231981848>
> Mar  1 00:00:06 gallifrey kernel: CR2: ffffc2001008ec20
> Mar  1 00:00:06 gallifrey kernel:  BUG: tar/27782, lock held at task
> exit time!
> Mar  1 00:00:06 gallifrey kernel:  [ffff8101d65e65c0] {inode_init_once}
> Mar  1 00:00:06 gallifrey kernel: .. held by:               tar:27782
> [ffff810233fee140, 118]
> Mar  1 00:00:06 gallifrey kernel: ... acquired at:
> do_lookup+0x81/0x174
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