Bug#740038: core dump kernel paging oops?

Antoine Beaupré anarcat at debian.org
Tue Feb 25 03:30:26 UTC 2014


So it seems this could not be PA's fault - I actually had a kernel oops
yesterday evening... It could be bad memory but it's the first time I
see such a problem:

[796082.448453] BUG: unable to handle kernel paging request at ffffc90004efe000
[796082.448521] IP: [<ffffffff8127172a>] memmove+0x4a/0x1a0
[796082.448568] PGD 21f027067 PUD 21f028067 PMD 216986067 PTE 0
[796082.448615] Oops: 0002 [#1] SMP
[796082.448642] Modules linked in: rfcomm bluetooth rfkill usblp joydev hid_dr ff_memless ufs nls_utf8 nls_cp437 vfat fat usb_storage snd_hrtimer cpufreq_stats ppdev lp cpufreq_powersave cpufreq_conservative cpufreq_userspace binfmt_misc iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek kvm_intel kvm pcspkr snd_hda_intel snd_hda_codec snd_hwdep lpc_ich snd_pcm_oss snd_mixer_oss mfd_core snd_pcm evdev snd_page_alloc rng_core snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer parport_pc parport snd asus_atk0110 i915 soundcore video acpi_cpufreq drm_kms_helper drm button processor thermal_sys i2c_algo_bit i2c_core coretemp loop firewire_sbp2 firewire_core crc_itu_t fuse autofs4 ext4 crc16 mbcache jbd2 btrfs xor raid6_pq crc32c libcrc32c sha256_ssse3 sha256_generic cbc hid_generic usbhid hid dm_crypt dm_mod sd_mod crct10dif_generic sg sr_mod cdrom crc_t10dif crct10dif_common ata_generic ata_piix libata scsi_mod atl1e ehci_pci uhci_hcd ehci_hcd usbcore usb_common
[796082.449407] CPU: 1 PID: 10093 Comm: pulseaudio Not tainted 3.12-1-amd64 #1 Debian 3.12.9-1
[796082.449457] Hardware name: System manufacturer System Product Name/P5G41-M LE, BIOS 0506    06/11/2010
[796082.449513] task: ffff880215fe17c0 ti: ffff8801a38f0000 task.ti: ffff8801a38f0000
[796082.449559] RIP: 0010:[<ffffffff8127172a>]  [<ffffffff8127172a>] memmove+0x4a/0x1a0
[796082.449611] RSP: 0018:ffff8801a38f1ad0  EFLAGS: 00010287
[796082.449645] RAX: ffffc90004efe000 RBX: ffff8800a4f49d40 RCX: 00000000ffffffd7
[796082.449690] RDX: ffffffffffffffe8 RSI: ffffc90004efdff8 RDI: ffffc90004efe000
[796082.449734] RBP: 000000000000011a R08: 534547415353454d R09: 5f434c2f72662f65
[796082.449778] R10: 6c61636f6c2f6572 R11: 6168732f7273752f R12: 00000000ffffffd8
[796082.449822] R13: ffffc90004efaa80 R14: 0000000000000028 R15: ffffc90004efe028
[796082.449867] FS:  00007ff540460740(0000) GS:ffff88021fc80000(0000) knlGS:0000000000000000
[796082.449916] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[796082.449953] CR2: ffffc90004efe000 CR3: 00000001c7402000 CR4: 00000000000407e0
[796082.449997] Stack:
[796082.450011]  ffffffff811c134c ffffc90004ef9000 ffffc90004efad98 ffff8801a38f1d10
[796082.450067]  ffff880094d0aec0 ffff880000001d98 ffffffff81824460 ffff880200005000
[796082.450122]  ffff88000000013d 0000013d00000000 0000000000001d98 ffff880215fe17c0
[796082.450177] Call Trace:
[796082.450200]  [<ffffffff811c134c>] ? elf_core_dump+0x9ac/0x1390
[796082.450252]  [<ffffffffa02aab3d>] ? __ext4_journal_stop+0x2d/0x80 [ext4]
[796082.450296]  [<ffffffff811afcde>] ? fsnotify+0x24e/0x330
[796082.450333]  [<ffffffff811c87fb>] ? do_coredump+0xa0b/0xd90
[796082.450372]  [<ffffffff8106c050>] ? get_signal_to_deliver+0x1c0/0x5b0
[796082.450415]  [<ffffffff8101235d>] ? do_signal+0x3d/0x5b0
[796082.450450]  [<ffffffff8106b17f>] ? do_send_sig_info+0x4f/0x70
[796082.450488]  [<ffffffff81012938>] ? do_notify_resume+0x68/0x90
[796082.450527]  [<ffffffff81499272>] ? int_signal+0x12/0x17
[796082.450560] Code: 00 00 48 81 fa a8 02 00 00 72 05 40 38 fe 74 41 48 83 ea 20 48 83 ea 20 4c 8b 1e 4c 8b 56 08 4c 8b 4e 10 4c 8b 46 18 48 8d 76 20 <4c> 89 1f 4c 89 57 08 4c 89 4f 10 4c 89 47 18 48 8d 7f 20 73 d4
[796082.450833] RIP  [<ffffffff8127172a>] memmove+0x4a/0x1a0
[796082.450871]  RSP <ffff8801a38f1ad0>
[796082.450895] CR2: ffffc90004efe000
[796082.452927] ---[ end trace 71e1f157bace73b5 ]---

796082 is 2014-02-23T21:11:20Z-5

-- 
That's the kind of society I want to build. I want a guarantee - with
physics and mathematics, not with laws - that we can give ourselves
real privacy of personal communications.
                         - John Gilmore
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