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[Launchpad Bug Tracker <937048@xxxxxxxxxxxxxxxxxx>]

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/937048

Title:
  kernel BUG at /build/buildd/linux-3.0.0/fs/buffer.c:3234!; RIP:
  0010:[<ffffffff811965a1>] [<ffffffff811965a1>]
  free_buffer_head+0x31/0x40

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Description:	Ubuntu 11.10
  Release:	11.10
  PC is running 24/7. Bug happened 3 times now, every few weeks.
  Running on AMD64, 8 GB RAM, 8 GB swapfile (about 500MB in use).
  It's always "comm: kswapd0", so it might be swap related.

  kernel: [509327.475073] ------------[ cut here ]------------
  kernel: [509327.475102] kernel BUG at /build/buildd/linux-3.0.0/fs/buffer.c:3234!
  kernel: [509327.475130] invalid opcode: 0000 [#1] SMP 
  kernel: [509327.475149] CPU 2 
  kernel: [509327.475158] Modules linked in: btrfs zlib_deflate libcrc32c ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs reiserfs pcspkr nls_iso8859_1 nls_cp437 vfat fat bnep rfcomm bluetooth pci_stub vboxpci vboxnetadp vboxnetflt vboxdrv dm_crypt uvcvideo videodev v4l2_compat_ioctl32 snd_usb_audio snd_usbmidi_lib snd_hda_codec_hdmi ppdev snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device nfsd nfs lockd fscache auth_rpcgss nfs_acl psmouse serio_raw snd sp5100_tco k10temp sunrpc i2c_piix4 edac_core edac_mce_amd soundcore snd_page_alloc parport_pc shpchp lp parport usbhid hid usb_storage uas radeon ttm drm_kms_helper drm i2c_algo_bit pata_atiixp wmi r8169 ahci libahci
  kernel: [509327.475478] 
  kernel: [509327.475487] Pid: 54, comm: kswapd0 Not tainted 3.0.0-15-generic #26-Ubuntu Gigabyte Technology Co., Ltd. GA-MA785GM-US2H/GA-MA785GM-US2H
  kernel: [509327.475538] RIP: 0010:[<ffffffff811965a1>]  [<ffffffff811965a1>] free_buffer_head+0x31/0x40
  kernel: [509327.475579] RSP: 0018:ffff880216a9da70  EFLAGS: 00010287
  kernel: [509327.475601] RAX: ffff8800072869a0 RBX: 0000000000000001 RCX: 0200000000000009
  kernel: [509327.475630] RDX: 0000000000000000 RSI: 0000000000001000 RDI: ffff880007286958
  kernel: [509327.475660] RBP: ffff880216a9da70 R08: 000000000000003c R09: 0000000000000000
  kernel: [509327.475689] R10: 0000000000000001 R11: dead000000100100 R12: ffff880007286958
  kernel: [509327.475718] R13: ffffea0004e75920 R14: ffffea0004e75920 R15: 0000000000000000
  kernel: [509327.475748] FS:  00007f586477a700(0000) GS:ffff880227c80000(0000) knlGS:00000000f5199b70
  kernel: [509327.475781] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  kernel: [509327.475804] CR2: 00007f83521de000 CR3: 00000002160ec000 CR4: 00000000000006e0
  kernel: [509327.475834] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  kernel: [509327.475863] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  kernel: [509327.475893] Process kswapd0 (pid: 54, threadinfo ffff880216a9c000, task ffff880216ab0000)
  kernel: [509327.475926] Stack:
  kernel: [509327.475935]  ffff880216a9dab0 ffffffff81196634 ffffea0004adfd50 ffff880007286958
  kernel: [509327.475967]  ffff880216a9dbc0 ffff880007286958 ffff880007286958 ffff880219186800
  kernel: [509327.476000]  ffff880216a9daf0 ffffffff8124617c 0000000000000004 ffffea0004e75920
  kernel: [509327.476024] Call Trace:
  kernel: [509327.476024]  [<ffffffff81196634>] try_to_free_buffers+0x84/0xc0
  kernel: [509327.476024]  [<ffffffff8124617c>] jbd2_journal_try_to_free_buffers+0x8c/0xd0
  kernel: [509327.476024]  [<ffffffff81203f4a>] ext4_releasepage+0x6a/0xe0
  kernel: [509327.476024]  [<ffffffff8110a802>] try_to_release_page+0x32/0x50
  kernel: [509327.476024]  [<ffffffff8111caf4>] shrink_page_list+0x474/0x570
  kernel: [509327.476024]  [<ffffffff8111cfea>] shrink_inactive_list+0x11a/0x460
  kernel: [509327.476024]  [<ffffffff811a26fe>] ? __fsnotify_inode_delete+0xe/0x10
  kernel: [509327.476024]  [<ffffffff811825ea>] ? __destroy_inode+0x2a/0xa0
  kernel: [509327.476024]  [<ffffffff8111d771>] shrink_list+0xd1/0x140
  kernel: [509327.476024]  [<ffffffff8111d884>] shrink_zone+0xa4/0x1d0
  kernel: [509327.476024]  [<ffffffff8111ea45>] balance_pgdat+0x505/0x6f0
  kernel: [509327.476024]  [<ffffffff8111ed1a>] kswapd+0xea/0x1f0
  kernel: [509327.476024]  [<ffffffff8111ec30>] ? balance_pgdat+0x6f0/0x6f0
  kernel: [509327.476024]  [<ffffffff8108116c>] kthread+0x8c/0xa0
  kernel: [509327.476024]  [<ffffffff815fb2e4>] kernel_thread_helper+0x4/0x10
  kernel: [509327.476024]  [<ffffffff810810e0>] ? flush_kthread_worker+0xa0/0xa0
  kernel: [509327.476024]  [<ffffffff815fb2e0>] ? gs_change+0x13/0x13
  kernel: [509327.476024] Code: 66 66 90 48 8d 47 48 48 39 47 48 75 1e 48 89 fe 48 8b 3d 23 48 d5 00 e8 fe d5 fb ff 65 ff 0c 25 60 fa 00 00 e8 e1 fe ff ff 5d c3 <0f> 0b 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 55 
  kernel: [509327.476024] RIP  [<ffffffff811965a1>] free_buffer_head+0x31/0x40
  kernel: [509327.476024]  RSP <ffff880216a9da70>
  kernel: [509327.505898] ---[ end trace b415f57830f40a1f ]---
  --- 
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  DistroRelease: Ubuntu 11.10
  Package: linux (not installed)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  Tags:  oneiric
  Uname: Linux 3.3.0-030300rc4-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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