On Wednesday 08 Aug 2007, Darren Salt wrote: > I demand that tim@xxxxxxxxxxxxxxxxxxx may or may not have written... > > > 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 > > That looks interesting... > > > 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 > > [snip] > > You have some other problem; this is merely a symptom. Hmm. Yes. Playing around a bit overnight, I get two instances of the appended Oops, both coinciding with the end of a recording. The error I posted earlier then occurs immediately upon killing mythbackend. Since this is a RedHat kernel, I probably ought to open a bug there...:-/ Aug 9 07:00:48 moominvalley kernel: mt2060 I2C read failed Aug 9 07:00:48 moominvalley last message repeated 9 times Aug 9 07:00:48 moominvalley kernel: dvb-usb: error while stopping stream. Aug 9 07:00:48 moominvalley kernel: mt2060 I2C write failed Aug 9 07:00:48 moominvalley kernel: Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: Aug 9 07:00:48 moominvalley kernel: [<ffffffff881d2122>] :mt2060:mt2060_init+ 0xc/0x21 Aug 9 07:00:48 moominvalley kernel: PGD 4389f067 PUD 753c2067 PMD 0 Aug 9 07:00:48 moominvalley kernel: Oops: 0000 [1] SMP Aug 9 07:00:48 moominvalley kernel: last sysfs file: /devices/pci0000:00/0000: 00:00.0/class Aug 9 07:00:48 moominvalley kernel: CPU 1 Aug 9 07:00:48 moominvalley kernel: Modules linked in: cpufreq_stats nfsd expo rtfs nfs_acl autofs4 lockd sunrpc ipv6 nf_conntrack_netbios_ns nf_conntrack_ipv 4 xt_state nf_conntrack nfnetlink xt_tcpudp ipt_REJECT iptable_filter ip_tables x_tables cpufreq_ondemand acpi_cpufreq dm_multipath video sbs button dock batt ery ac lp loop mt2060 dvb_usb_dib0700 dib7000m dib7000p dvb_usb dvb_core dvb_pl l dib3000mc dibx000_common r8169 serio_raw parport_pc i2c_i801 rtc_cmos parport i2c_core 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 9 07:00:48 moominvalley kernel: Pid: 8142, comm: kdvb-fe-0 Not tainted 2.6 .22.1-41.fc7 #1 Aug 9 07:00:48 moominvalley kernel: RIP: 0010:[<ffffffff881d2122>] [<ffffffff 881d2122>] :mt2060:mt2060_init+0xc/0x21 Aug 9 07:00:48 moominvalley kernel: RSP: 0018:ffff810061d8fec8 EFLAGS: 000102 82 Aug 9 07:00:48 moominvalley kernel: RAX: ffffffff881d2116 RBX: ffff81007efc180 0 RCX: ffffffff8119dbf3 Aug 9 07:00:48 moominvalley kernel: RDX: ffff81007f9ac000 RSI: 000000000000000 b RDI: 0000000000000000 Aug 9 07:00:48 moominvalley kernel: RBP: ffff81007efc1800 R08: ffff81007e4df80 0 R09: ffff81006a5600c0 Aug 9 07:00:48 moominvalley kernel: R10: 0000000000000003 R11: 00000000fffffff 4 R12: ffff81007f353400 Aug 9 07:00:48 moominvalley kernel: R13: ffffffffffffffff R14: ffffffff81444ea 0 R15: 0000000000000000 Aug 9 07:00:48 moominvalley kernel: FS: 0000000000000000(0000) GS:ffff8100023 97280(0000) knlGS:0000000000000000 Aug 9 07:00:48 moominvalley kernel: CS: 0010 DS: 0018 ES: 0018 CR0: 000000008 005003b Aug 9 07:00:48 moominvalley kernel: CR2: 0000000000000000 CR3: 000000004389e00 0 CR4: 00000000000006e0 Aug 9 07:00:48 moominvalley kernel: Process kdvb-fe-0 (pid: 8142, threadinfo f fff810061d8e000, task ffff810052a60800) Aug 9 07:00:48 moominvalley kernel: Stack: ffffffff881a0a6d ffff81007efc1800 ffffffff881a1d5c ffffffff81444ea0 Aug 9 07:00:48 moominvalley kernel: 0000000000000000 ffff810061d8ff20 ffff810 07efc1800 ffff8100499a7c68 Aug 9 07:00:49 moominvalley kernel: ffffffffffffffff ffff81007efc1800 fffffff f881a1cdc ffff8100499a7c68 Aug 9 07:00:49 moominvalley kernel: Call Trace: Aug 9 07:00:49 moominvalley kernel: [<ffffffff881a0a6d>] :dvb_core:dvb_fronte nd_init+0x49/0x63 Aug 9 07:00:49 moominvalley kernel: [<ffffffff881a1d5c>] :dvb_core:dvb_fronte nd_thread+0x80/0x32c Aug 9 07:00:49 moominvalley kernel: [<ffffffff881a1cdc>] :dvb_core:dvb_fronte nd_thread+0x0/0x32c Aug 9 07:00:49 moominvalley kernel: [<ffffffff810442a8>] kthread+0x47/0x73 Aug 9 07:00:49 moominvalley kernel: [<ffffffff8102f1b9>] schedule_tail+0x5c/0 x99 Aug 9 07:00:49 moominvalley kernel: [<ffffffff8100a978>] child_rip+0xa/0x12 Aug 9 07:00:49 moominvalley kernel: [<ffffffff81044261>] kthread+0x0/0x73 Aug 9 07:00:49 moominvalley kernel: [<ffffffff8100a96e>] child_rip+0x0/0x12 Aug 9 07:00:49 moominvalley kernel: Aug 9 07:00:49 moominvalley kernel: Aug 9 07:00:49 moominvalley kernel: Code: 48 8b 07 0f b6 50 01 c1 e2 06 83 ca 33 0f b6 d2 e9 60 ff ff Aug 9 07:00:49 moominvalley kernel: RIP [<ffffffff881d2122>] :mt2060:mt2060_i nit+0xc/0x21 Aug 9 07:00:49 moominvalley kernel: RSP <ffff810061d8fec8> Aug 9 07:00:49 moominvalley kernel: CR2: 0000000000000000 -- Tim Smith <tim@xxxxxxxxxxxxxxxxxxx> Owing to a bookkeeping error, three Imperial Class Star Destroyers have inadvertently been reclassified as comlinks, and are now on sale as Naval Surplus at twelve credits apiece. _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
