Searching the list shows a few instances of these, but not much further discussion so I'm not sure what the status is. In case it turns out to be useful, here's a trace from my mythbackend box. This has an x86_64 kernel. I *think* everythnig relevant should be in the backtrace already. Aug 6 20:49:57 moominvalley kernel: list_del corruption. prev->next should be ffff81007bca9c00, but was 0000000000000001 Aug 6 20:49:57 moominvalley kernel: ------------[ cut here ]------------ Aug 6 20:49:57 moominvalley kernel: kernel BUG at lib/list_debug.c:67! Aug 6 20:49:57 moominvalley kernel: invalid opcode: 0000 [2] SMP Aug 6 20:49:57 moominvalley kernel: last sysfs file: /class/usb_device/usbdev11.4/dev Aug 6 20:49:57 moominvalley kernel: CPU 1 Aug 6 20:49:57 moominvalley kernel: Modules linked in: iptable_filter ip_tables nfsd exportfs nfs_acl autofs4 lockd sunrpc ipv6 nf_conntrack_netbios_ns nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink xt_tcpudp ipt_REJECT x_tables cpufreq_ondemand acpi_cpufreq dm_multipath video sbs button dock battery ac lp loop mt2060 dvb_usb_dib0700 dib7000m dib7000p dvb_usb dvb_core dvb_pll dib3000mc dibx000_common r8169 parport_pc parport i2c_i801 rtc_cmos i2c_core serio_raw shpchp sg dm_snapshot dm_zero dm_mirror dm_mod ahci pata_jmicron ata_piix ata_generic libata sd_mod scsi_mod raid456 xor raid1 ext3 jbd mbcache ehci_hcd ohci_hcd uhci_hcd Aug 6 20:49:57 moominvalley kernel: Pid: 8393, comm: mythbackend Not tainted 2.6.22.1-41.fc7 #1 Aug 6 20:49:57 moominvalley kernel: RIP: 0010:[<ffffffff81118f19>] [<ffffffff81118f19>] list_del+0x21/0x5b Aug 6 20:49:57 moominvalley kernel: RSP: 0018:ffff81007bca9bd8 EFLAGS: 00010086 Aug 6 20:49:57 moominvalley kernel: RAX: 0000000000000058 RBX: ffff8100623e51c0 RCX: ffffffff8136c308 Aug 6 20:49:57 moominvalley kernel: RDX: 0000000100000000 RSI: 0000000000000096 RDI: 0000000000000000 Aug 6 20:49:57 moominvalley kernel: RBP: ffff8100623e51b8 R08: ffffffff8136c308 R09: 0000000000000000 Aug 6 20:49:57 moominvalley kernel: R10: 0000000000000046 R11: ffffffff813ad000 R12: 0000000000000292 Aug 6 20:49:57 moominvalley kernel: R13: ffff81007557a800 R14: 00000000fffffffc R15: ffff8100604383c0 Aug 6 20:49:57 moominvalley kernel: FS: 0000000041e02950(0063) GS:ffff810002397280(0000) knlGS:0000000000000000 Aug 6 20:49:57 moominvalley kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Aug 6 20:49:57 moominvalley kernel: CR2: 00000000008fe008 CR3: 000000006c992000 CR4: 00000000000006e0 Aug 6 20:49:57 moominvalley kernel: Process mythbackend (pid: 8393, threadinfo ffff81007bca8000, task ffff81007557a800) Aug 6 20:49:57 moominvalley kernel: Stack: 0000000000000292 ffffffff81248c40 0000000000000001 ffff81007557a800 Aug 6 20:49:57 moominvalley kernel: ffffffff8102cc11 ffff8100623e51c8 ffff8100623e51c8 ffffffff81247597 Aug 6 20:49:57 moominvalley kernel: ffff8100623e51b8 0000000080a86f3d 00000000ffffffed ffff810065cb2800 Aug 6 20:49:57 moominvalley kernel: Call Trace: Aug 6 20:49:57 moominvalley kernel: [<ffffffff81248c40>] __down_interruptible+0xe2/0x112 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8102cc11>] default_wake_function+0x0/0xe Aug 6 20:49:57 moominvalley kernel: [<ffffffff81247597>] wait_for_completion+0xa0/0xb3 Aug 6 20:49:57 moominvalley kernel: [<ffffffff81248a2b>] __down_failed_interruptible+0x35/0x3a Aug 6 20:49:57 moominvalley kernel: [<ffffffff8819f3c9>] :dvb_core:dvb_frontend_ioctl+0xc1/0x8a6 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8102ac04>] enqueue_entity+0x21b/0x242 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8102a32f>] enqueue_task+0x43/0x56 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8102a9be>] activate_task+0x66/0x82 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8102af30>] __check_preempt_curr_fair+0x1d/0x38 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8102cbff>] try_to_wake_up+0x353/0x365 Aug 6 20:49:57 moominvalley kernel: [<ffffffff88199129>] :dvb_core:dvb_usercopy+0xc1/0x11c Aug 6 20:49:57 moominvalley kernel: [<ffffffff8819f308>] :dvb_core:dvb_frontend_ioctl+0x0/0x8a6 Aug 6 20:49:57 moominvalley kernel: [<ffffffff81095adb>] chrdev_open+0x155/0x184 Aug 6 20:49:57 moominvalley kernel: [<ffffffff81095986>] chrdev_open+0x0/0x184 Aug 6 20:49:57 moominvalley kernel: [<ffffffff810919c7>] __dentry_open+0x101/0x1aa Aug 6 20:49:57 moominvalley kernel: [<ffffffff88199184>] :dvb_core:dvb_generic_ioctl+0x0/0x22 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8109e879>] do_ioctl+0x9d/0xb6 Aug 6 20:49:57 moominvalley kernel: [<ffffffff8109ead5>] vfs_ioctl+0x243/0x25c Aug 6 20:49:57 moominvalley kernel: [<ffffffff8109eb47>] sys_ioctl+0x59/0x7a Aug 6 20:49:57 moominvalley kernel: [<ffffffff81009b5e>] system_call+0x7e/0x83 Aug 6 20:49:57 moominvalley kernel: Aug 6 20:49:57 moominvalley kernel: Aug 6 20:49:57 moominvalley kernel: Code: 0f 0b eb fe 48 8b 07 48 8b 50 08 48 39 fa 74 12 48 c7 c7 91 Aug 6 20:49:57 moominvalley kernel: RIP [<ffffffff81118f19>] list_del+0x21/0x5b Aug 6 20:49:57 moominvalley kernel: RSP <ffff81007bca9bd8> -- Tim Smith <tim@xxxxxxxxxxxxxxxxxxx> _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
