Public bug reported:
Started to download a ~40gb file with bittorrent over night. Next day
the bittorrent-program hung and could not be killed - process was listed
as "<defunct>" by "ps".
"sync" on console hangs, too. because of the nature of the downloaded
file I cannot determine whether it is completely downloaded/corrupted or
not.
Filesystem is btrfs with mount-option
"rw,relatime,compress=lzo,space_cache"
oneiric linux-image-server 3.0.0-8-server #10-Ubuntu SMP Sat Aug 6
01:21:13 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux on natty
Dmesg reports multiple of these:
[631418.593124] ------------[ cut here ]------------
[631418.593210] kernel BUG at
/build/buildd/linux-3.0.0/fs/btrfs/extent-tree.c:5502!
[631418.593324] invalid opcode: 0000 [#1] SMP
[631418.593391] CPU 1
[631418.593423] Modules linked in: ufs qnx4 hfsplus hfs minix ntfs vfat msdos
fat jfs xfs reiserfs xts gf128mul cryptd aes_x86_64 aes_generic nfsd nfs lockd
fscache auth_rpcgss nfs_acl sunrpc dm_crypt rc_dib0
700_rc5 dvb_usb_dib0700 dib7000p ir_lirc_codec dib0090 lirc_dev ir_sony_decoder
dib7000m ir_jvc_decoder dib0070 ir_rc6_decoder ir_rc5_decoder dvb_usb dib8000
ir_nec_decoder w83627ehf hwmon_vid dvb_core dib300
0mc rc_core coretemp dibx000_common lp psmouse serio_raw parport btrfs
zlib_deflate libcrc32c usb_storage uas ahci libahci i915 drm_kms_helper drm
r8169 i2c_algo_bit video
[631418.594367]
[631418.594396] Pid: 13529, comm: btrfs-endio-wri Not tainted 3.0.0-8-server
#10-Ubuntu /D525MW
[631418.594552] RIP: 0010:[<ffffffffa0150581>] [<ffffffffa0150581>]
alloc_reserved_tree_block+0x1b1/0x1d0 [btrfs]
[631418.594734] RSP: 0018:ffff88000e6f9a20 EFLAGS: 00010286
[631418.594816] RAX: 00000000ffffffe4 RBX: ffff880124296c60 RCX:
ffff88012633a000
[631418.594924] RDX: 0000000000000008 RSI: 0000000000000000 RDI:
0000000000000000
[631418.595033] RBP: ffff88000e6f9aa0 R08: ffffffffffffffff R09:
0000000000000000
[631418.595142] R10: ffff8801246b3800 R11: ffff880126406ab0 R12:
ffff88000e6f9aef
[631418.595251] R13: ffff880126406ab0 R14: ffff8801289fc000 R15:
ffff8800a9468780
[631418.595361] FS: 0000000000000000(0000) GS:ffff88012fc80000(0000)
knlGS:0000000000000000
[631418.595483] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[631418.595574] CR2: 00007fdcb8d3b000 CR3: 00000001082ec000 CR4:
00000000000006e0
[631418.595691] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[631418.595801] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[631418.595910] Process btrfs-endio-wri (pid: 13529, threadinfo
ffff88000e6f8000, task ffff8800145d44d0)
[631418.596047] Stack:
[631418.596079] ffff8801246b3800 0000000000000ce8 0000000000000007
ffff8800b3a6d440
[631418.596201] 0000000000000000 0000000000000000 ffff880126b78000
0000000000000cd0
[631418.596331] 0000000000001000 00000033000008fe ffff8801010f1d80
ffff880126406ab0
[631418.596453] Call Trace:
[631418.596519] [<ffffffffa0150ca9>] run_delayed_tree_ref+0xb9/0x1a0 [btrfs]
[631418.596651] [<ffffffffa0189390>] ? map_extent_buffer+0xb0/0xc0 [btrfs]
[631418.596774] [<ffffffffa015384e>] run_one_delayed_ref+0xae/0xf0 [btrfs]
[631418.596897] [<ffffffffa0153964>] run_clustered_refs+0xd4/0x240 [btrfs]
[631418.597021] [<ffffffffa0153b9a>] btrfs_run_delayed_refs+0xca/0x220 [btrfs]
[631418.597133] [<ffffffff81046593>] ? __wake_up+0x53/0x70
[631418.597246] [<ffffffffa0165115>] __btrfs_end_transaction+0x85/0x320 [btrfs]
[631418.597379] [<ffffffffa0165425>] btrfs_end_transaction+0x15/0x20 [btrfs]
[631418.597508] [<ffffffffa016c0a4>] btrfs_finish_ordered_io+0x284/0x320
[btrfs]
[631418.597642] [<ffffffffa016c18d>] btrfs_writepage_end_io_hook+0x4d/0xc0
[btrfs]
[631418.600016] [<ffffffffa0184c69>] end_bio_extent_writepage+0x129/0x180
[btrfs]
[631418.600016] [<ffffffff81197d4d>] bio_endio+0x1d/0x40
[631418.600016] [<ffffffffa015e25d>] end_workqueue_fn+0x5d/0xa0 [btrfs]
[631418.600016] [<ffffffffa0191390>] worker_loop+0xa0/0x2b0 [btrfs]
[631418.600016] [<ffffffffa01912f0>] ?
check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs]
[631418.600016] [<ffffffff81080a1c>] kthread+0x8c/0xa0
[631418.600016] [<ffffffff81607c24>] kernel_thread_helper+0x4/0x10
[631418.600016] [<ffffffff81080990>] ? flush_kthread_worker+0xa0/0xa0
[631418.600016] [<ffffffff81607c20>] ? gs_change+0x13/0x13
[631418.600016] Code: c3 66 0f 1f 84 00 00 00 00 00 4c 89 fe 4c 89 f7 ba b0 00
00 00 e8 20 c9 02 00 48 8b 55 90 4c 89 fe 4c 89 f7 e8 f1 ca 02 00 eb 8f <0f> 0b
0f 0b 49 8b 54 24 09 49 8b 34 24 48 c7 c7 90 8b 1
b a0 31
[631418.600016] RIP [<ffffffffa0150581>] alloc_reserved_tree_block+0x1b1/0x1d0
[btrfs]
[631418.600016] RSP <ffff88000e6f9a20>
[631418.691152] ---[ end trace 760176dff3aecd98 ]---
linux-image-server:
Installed: 3.0.0.8.9
Candidate: 3.0.0.8.9
Version table:
*** 3.0.0.8.9 0
800 http://de.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
100 /var/lib/dpkg/status
2.6.38.11.26 0
900 http://de.archive.ubuntu.com/ubuntu/ natty-updates/main amd64
Packages
900 http://security.ubuntu.com/ubuntu/ natty-security/main amd64
Packages
2.6.38.8.22 0
900 http://de.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
** Tags: btrfs filesystem
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https://bugs.launchpad.net/bugs/829988
Title:
kernel BUG at /build/buildd/linux-3.0.0/fs/btrfs/extent-tree.c:5502!,
3.0.0-8-server #10-Ubuntu
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