Hi Antoine, My bug was due to bad ram which was especially good at failing only after about 1-2 days of memtest86. I suggest that you proceed with that kind of test before investigating any further in the kernel area.
Regards, Mathieu * Antoine Martin ([EMAIL PROTECTED]) wrote: > Re: > http://lkml.org/lkml/2007/1/28/146 > > Just got a similar OOPS on a system under heavy load (transcode + p2p), > with kernel 2.6.20.3 / x86_64 (in free_block). > > [<ffffffff802c5b95>] free_block+0xae/0x13c > [<ffffffff802c5cb6>] drain_array+0x93/0xd1 > [<ffffffff802c6820>] cache_reap+0xea/0x239 > [<ffffffff802c6736>] cache_reap+0x0/0x239 > [<ffffffff8024a644>] run_workqueue+0x95/0x140 > [<ffffffff802471e5>] worker_thread+0x0/0x150 > [<ffffffff802472ff>] worker_thread+0x11a/0x150 > [<ffffffff80284806>] default_wake_function+0x0/0xe > [<ffffffff802319e7>] kthread+0xd1/0x100 > [<ffffffff8025aec8>] child_rip+0xa/0x12 > [<ffffffff80231916>] kthread+0x0/0x100 > [<ffffffff8025aebe>] child_rip+0x0/0x12 > > Not sure this is relevant, but transcode uses nice/ionice: > ionice -n 7 -c 3 nice -n 19 transcode [...] > No forced pre-emption, 100HZ, etc... > Note: this is not an SMP system, just a SMP kernel. So if it is a race, > it is not an SMP triggered race. (or I could just be unlucky again - > damn those cosmic rays) > > Antoine > > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: list_del corruption. > next->prev should be ffff8100007c6000, but was ffffffffffffffff > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: ------------[ cut here > ]------------ > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: kernel BUG at > lib/list_debug.c:72! > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: invalid opcode: 0000 [1] SMP > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: CPU 0 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Modules linked in: ipt_LOG > ipt_MASQUERADE iptable_nat nf_nat ip6table_filter ip6_tables iptable_filter > ip_tables pegasus autofs4 hidp rfcomm l2cap bluetooth sunrpc > nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack > nfnetlink ip6t_REJECT xt_tcpudp x_tables ipv6 dm_mirror dm_multipath dm_mod > raid0 video thermal sbs processor i2c_ec dock button battery asus_acpi > backlight ac lp bt878 pata_via snd_hda_intel snd_hda_codec snd_bt87x > snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device > snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore ide_cd sg shpchp > parport_pc snd_page_alloc pata_ali i2c_viapro sata_uli via_rhine mii cdrom > parport tuner tvaudio bttv k8temp hwmon video_buf pcspkr ir_common > compat_ioctl32 i2c_algo_bit btcx_risc tveeprom i2c_core videodev v4l2_common > serio_raw v4l1_compat sata_sil ata_generic sata_via libata sd_mod scsi_mod > raid456 xor raid1 ext3 jbd ehci_hcd ohci_hcd uhci_hcd > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Pid: 5, comm: events/0 Not > tainted 2.6.20.3 #5 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RIP: 0010:[<ffffffff803332ae>] > [<ffffffff803332ae>] list_del+0x3f/0x5b > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RSP: 0018:ffff81000148ddb0 > EFLAGS: 00010082 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RAX: 0000000000000058 RBX: > ffff8100007c6000 RCX: ffffffff8051b718 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RDX: ffffffff8051b718 RSI: > 0000000000000082 RDI: ffffffff8051b700 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RBP: ffff81000140ff40 R08: > ffffffff8051b718 R09: 0000000000000010 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: R10: 0000000000000000 R11: > 0000000000000000 R12: ffff8100007c6f00 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: R13: ffff810001420580 R14: > ffff810001425218 R15: 000000000000003e > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: FS: 0000000041001940(0000) > GS:ffffffff8055f000(0000) knlGS:00000000f7f328e0 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: CS: 0010 DS: 0018 ES: 0018 > CR0: 000000008005003b > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: CR2: 00002b7cf8af2000 CR3: > 000000000532c000 CR4: 00000000000006e0 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Process events/0 (pid: 5, > threadinfo ffff81000148c000, task ffff810001476820) > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Stack: ffff8100066cf000 > ffffffff802c5b95 0000006000000000 ffff810001425028 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: 0000000000000060 > ffff810001425000 ffff81000140ff80 0000000000000000 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: ffff810001420580 > ffffffff802c5cb6 00000001ffffff86 0000000000000000 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Call Trace: > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802c5b95>] > free_block+0xae/0x13c > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802c5cb6>] > drain_array+0x93/0xd1 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802c6820>] > cache_reap+0xea/0x239 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802c6736>] > cache_reap+0x0/0x239 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff8024a644>] > run_workqueue+0x95/0x140 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802471e5>] > worker_thread+0x0/0x150 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802472ff>] > worker_thread+0x11a/0x150 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff80284806>] > default_wake_function+0x0/0xe > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802319e7>] > kthread+0xd1/0x100 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff8025aec8>] > child_rip+0xa/0x12 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff80231916>] > kthread+0x0/0x100 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff8025aebe>] > child_rip+0x0/0x12 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Code: 0f 0b eb fe 48 89 48 08 > 48 89 01 48 c7 47 08 00 02 20 00 48 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RIP [<ffffffff803332ae>] > list_del+0x3f/0x5b > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RSP <ffff81000148ddb0> > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: NMI Watchdog detected LOCKUP > on CPU 0 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: CPU 0 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Modules linked in: ipt_LOG > ipt_MASQUERADE iptable_nat nf_nat ip6table_filter ip6_tables iptable_filter > ip_tables pegasus autofs4 hidp rfcomm l2cap bluetooth sunrpc > nf_conntrack_netbios_ns ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack > nfnetlink ip6t_REJECT xt_tcpudp x_tables ipv6 dm_mirror dm_multipath dm_mod > raid0 video thermal sbs processor i2c_ec dock button battery asus_acpi > backlight ac lp bt878 pata_via snd_hda_intel snd_hda_codec snd_bt87x > snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device > snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore ide_cd sg shpchp > parport_pc snd_page_alloc pata_ali i2c_viapro sata_uli via_rhine mii cdrom > parport tuner tvaudio bttv k8temp hwmon video_buf pcspkr ir_common > compat_ioctl32 i2c_algo_bit btcx_risc tveeprom i2c_core videodev v4l2_common > serio_raw v4l1_compat sata_sil ata_generic sata_via libata sd_mod scsi_mod > raid456 xor raid1 ext3 jbd ehci_hcd ohci_hcd uhci_hcd > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: Pid: 211, comm: kswapd0 Not > tainted 2.6.20.3 #5 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RIP: 0010:[<ffffffff80207756>] > [<ffffffff80207756>] _raw_spin_lock+0x76/0xf3 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RSP: 0000:ffff81000fe1db10 > EFLAGS: 00000097 > Mar 21 06:15:27 x1-6-00-18-f3-f6-fa-fb kernel: RAX: 0000000000000008 RBX: > ffff81000140ff80 RCX: 0000000027ec466b > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: RDX: 000000000000288f RSI: > ffffffff804c5865 RDI: 0000000000000001 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: RBP: 0000000019ba8b10 R08: > ffff8100056d9698 R09: ffff81000140fe03 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: R10: ffff8100056d9698 R11: > ffffffff88032aba R12: 0000000000000001 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: R13: 0000000077020c98 R14: > ffff810001420580 R15: ffff81000140ff80 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: FS: 00002ba96ff4b600(0000) > GS:ffffffff8055f000(0000) knlGS:00000000f7f328e0 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: CS: 0010 DS: 0018 ES: 0018 > CR0: 000000008005003b > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: CR2: 00002aeee011afd0 CR3: > 000000000532c000 CR4: 00000000000006e0 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: Process kswapd0 (pid: 211, > threadinfo ffff81000fe1c000, task ffff81000fc97040) > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: Stack: ffff81000140fde0 > ffff81000140ff40 000000000000003c ffff810001421400 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: 0000000000000000 > ffffffff802c5d28 ffff81000fe1dea0 ffff810001421400 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: 0000000000000000 > ffff81000c15df68 ffff810001420580 0000000000000246 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: Call Trace: > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff802c5d28>] > cache_flusharray+0x34/0xae > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff80207678>] > kmem_cache_free+0x1e6/0x203 > Mar 21 06:15:28 x1-6-00-18-f3-f6-fa-fb kernel: [<ffffffff80226799>] > free_buffer_head+0x24/0x3d -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
