[Bug 541887] [NEW] BUG in jfs_metapage.c

[sabaini]

Public bug reported:

While copying from USB disk to USB disk the machine locked up after some
hours and I found this in the kernel log after Magic-Sysrq reboot:

Mar 19 09:44:05 gram kernel: [173248.938983] BUG at /build/buildd/linux-2.6.31/fs/jfs/jfs_metapage.c:752 assert(mp->count)
Mar 19 09:44:05 gram kernel: [173248.939015] ------------[ cut here ]------------
Mar 19 09:44:05 gram kernel: [173248.939018] kernel BUG at /build/buildd/linux-2.6.31/fs/jfs/jfs_metapage.c:752!
Mar 19 09:44:05 gram kernel: [173248.939021] invalid opcode: 0000 [#1] SMP 
Mar 19 09:44:05 gram kernel: [173248.939025] last sysfs file: /sys/module/ip_tables/initstate
Mar 19 09:44:05 gram kernel: [173248.939028] CPU 2 
Mar 19 09:44:05 gram kernel: [173248.939031] Modules linked in: xts gf128mul jfs tun isofs udf crc_itu_t cryptd aes_x86_64 aes_generic ecb nfnetlink_queue nfnetlink dm_crypt binfmt_misc nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT xt_tcpudp xt_iprange xt_state nf_conntrack xt_mark xt_NFQUEUE vboxnetadp vboxnetflt vboxdrv nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss iptable_filter lp snd_pcm snd_seq_dummy snd_seq_oss ip_tables x_tables snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq ppdev psmouse serio_raw snd_timer snd_seq_device dell_wmi dcdbas parport_pc parport snd soundcore snd_page_alloc nvidia(P) x38_edac edac_core usbhid usb_storage tg3
Mar 19 09:44:05 gram kernel: [173248.939095] Pid: 17897, comm: cp Tainted: P           2.6.31-20-generic #58-Ubuntu Precision WorkStation T3400  
Mar 19 09:44:05 gram kernel: [173248.939099] RIP: 0010:[<ffffffffa0ecf7b4>]  [<ffffffffa0ecf7b4>] release_metapage+0x174/0x190 [jfs]
Mar 19 09:44:05 gram kernel: [173248.939115] RSP: 0018:ffff8801ac60dbc8  EFLAGS: 00010296
Mar 19 09:44:05 gram kernel: [173248.939118] RAX: 0000000000000064 RBX: ffff8801701a0180 RCX: 000000000000001e
Mar 19 09:44:05 gram kernel: [173248.939121] RDX: 0000000000000000 RSI: 0000000000000082 RDI: 0000000000000246
Mar 19 09:44:05 gram kernel: [173248.939124] RBP: ffff8801ac60dbd8 R08: 0000000000000032 R09: 0000000000012d83
Mar 19 09:44:05 gram kernel: [173248.939127] R10: 0000000000000005 R11: 0000000000000000 R12: ffffea000415a380
Mar 19 09:44:05 gram kernel: [173248.939130] R13: ffff88000fa28960 R14: 0000000000001b2d R15: 000000000000003c
Mar 19 09:44:05 gram kernel: [173248.939134] FS:  00007f9ced659790(0000) GS:ffff880028070000(0000) knlGS:0000000000000000
Mar 19 09:44:05 gram kernel: [173248.939137] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Mar 19 09:44:05 gram kernel: [173248.939140] CR2: 00000000047c4778 CR3: 000000014a603000 CR4: 00000000000006e0
Mar 19 09:44:05 gram kernel: [173248.939143] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Mar 19 09:44:05 gram kernel: [173248.939146] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Mar 19 09:44:05 gram kernel: [173248.939150] Process cp (pid: 17897, threadinfo ffff8801ac60c000, task ffff88019bf9c410)
Mar 19 09:44:05 gram kernel: [173248.939152] Stack:
Mar 19 09:44:05 gram kernel: [173248.939154]  ffff88000fa28bc0 ffff8801ac60dc98 ffff8801ac60dc28 ffffffffa0ed8569
Mar 19 09:44:05 gram kernel: [173248.939159] <0> 0000000000000018 0000000000000000 ffff8801ac60dc08 000000000000005d
Mar 19 09:44:05 gram kernel: [173248.939164] <0> ffff8801a1eb6040 ffff8801a1eb603c 000000000000005d 000000000000003c
Mar 19 09:44:05 gram kernel: [173248.939170] Call Trace:
Mar 19 09:44:05 gram kernel: [173248.939182]  [<ffffffffa0ed8569>] ea_put+0x149/0x2e0 [jfs]

(Yes, the USB disks are both formatted with JFS).

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
BUG in jfs_metapage.c
https://bugs.launchpad.net/bugs/541887
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