Public bug reported:
After update, desktop and production machines, both using i386 and amd64
kernels fail.
The crash may only occur after loading of syscall audit rules, hence
boot up to initrd is still possible.
Login is still possible but many integral functions fail, e.g. sending
signals to processes. Also sudo is not working any more
[ 64.447838] BUG: unable to handle kernel NULL pointer dereference at
000000000000068f
[ 64.448715] IP: [<ffffffff8136cb80>] strlen+0x0/0x30
[ 64.449533] PGD 0
[ 64.450315] Oops: 0000 [#15] SMP
[ 64.451069] Modules linked in: pci_stub vboxpci(OX) vboxnetadp(OX)
vboxnetflt(OX) vboxdrv(OX) nf_conntrack_netlink snd_hda_codec_hdmi xt_multiport
arc4 xt_hashlimit ipt_REJECT xt_tcpudp xt_NFLOG nfnetlink_log nfnetlink
xt_conntrack iptable_filter iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4
nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle ip_tables x_tables dell_wmi
sparse_keymap ppdev dell_laptop dcdbas cdc_mbim cdc_wdm cdc_ncm btusb bluetooth
usbnet mii uvcvideo iwlmvm videobuf2_vmalloc videobuf2_memops videobuf2_core
mac80211 videodev snd_hda_codec_realtek intel_rapl x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm joydev serio_raw i915 iwlwifi
drm_kms_helper snd_hda_intel snd_hda_codec snd_hwdep snd_pcm cfg80211
snd_page_alloc lpc_ich mei_me mei shpchp drm i2c_algo_bit snd_timer snd
soundcore wmi parport_pc parport video mac_hid dm_crypt hid_generic usbhid hid
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw
gf128mul glue_helper ablk_helpe
r cryptd psmouse ahci libahci sdhci_pci sdhci e1000e ptp pps_core
[ 64.456682] CPU: 1 PID: 1506 Comm: sudo Tainted: G D OX
3.13.0-51-generic #84-Ubuntu
[ 64.457483] Hardware name: Dell Inc.
[ 64.458281] task: ffff880037251800 ti: ffff8800368c4000 task.ti:
ffff8800368c4000
[ 64.459095] RIP: 0010:[<ffffffff8136cb80>] [<ffffffff8136cb80>]
strlen+0x0/0x30
[ 64.459901] RSP: 0018:ffff8800368c5df0 EFLAGS: 00010286
[ 64.460707] RAX: ffff8800368c5d40 RBX: 000000000000068f RCX: 0000000000000000
[ 64.461522] RDX: 0000000000000037 RSI: 000000000000068f RDI: 000000000000068f
[ 64.462331] RBP: ffff8800368c5e08 R08: 0000000000000000 R09: 000000000000fffe
[ 64.463141] R10: 0000000000000000 R11: ffff8800368c5c06 R12: ffff8800379c6680
[ 64.463951] R13: 0000000000000000 R14: ffff8802121a8000 R15: 0000000000000000
[ 64.464753] FS: 00007fa9c5d73840(0000) GS:ffff88021ea80000(0000)
knlGS:0000000000000000
[ 64.465558] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 64.466367] CR2: 000000000000068f CR3: 00000000379b8000 CR4: 00000000001407e0
[ 64.467189] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 64.468003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 64.468803] Stack:
[ 64.469596] ffffffff810f7fda ffff8800379c6680 ffff8802121a8060
ffff8800368c5e78
[ 64.470410] ffffffff810f9581 0000000000000246 ffffffff81c55740
ffff8800368c5e60
[ 64.471217] 0000000000000246 ffff8800368c5ef0 ffff8800368c5e60
ffffffff810f6b93
[ 64.472024] Call Trace:
[ 64.472829] [<ffffffff810f7fda>] ? audit_log_untrustedstring+0x1a/0x30
[ 64.473643] [<ffffffff810f9581>] audit_log_name+0x281/0x320
[ 64.474454] [<ffffffff810f6b93>] ? audit_buffer_free+0x73/0xa0
[ 64.475267] [<ffffffff810fbe37>] audit_log_exit+0x3d7/0xb90
[ 64.476079] [<ffffffff810fe5bf>] __audit_syscall_exit+0x27f/0x2e0
[ 64.476889] [<ffffffff817331e4>] sysret_audit+0x17/0x21
[ 64.477680] Code: 89 f8 48 89 e5 f6 82 40 c7 84 81 20 74 15 0f 1f 44 00 00
48 83 c0 01 0f b6 10 f6 82 40 c7 84 81 20 75 f0 5d c3 66 0f 1f 44 00 00 <80> 3f
00 55 48 89 e5 74 15 48 89 f8 0f 1f 40 00 48 83 c0 01 80
[ 64.479363] RIP [<ffffffff8136cb80>] strlen+0x0/0x30
[ 64.480169] RSP <ffff8800368c5df0>
[ 64.480975] CR2: 000000000000068f
[ 64.481784] ---[ end trace 267143d269f88f24 ]---
# cat /proc/version_signature > version.log
failed, but should have reported latest Ubuntu Trusty kernel
# lspci -v
Completely different systems (vmware guest, vbox guest, various
hardware). Quite likely not related
$ lsb_release -rd
Description: Ubuntu 14.04.2 LTS
Release: 14.04
$ apt-cache policy linux-image-3.13.0-51-generic
linux-image-3.13.0-51-generic:
Installed: 3.13.0-51.84
Candidate: 3.13.0-51.84
Version table:
*** 3.13.0-51.84 0
500 http://archive.ubuntu.com/ubuntu/ trusty-updates/main i386 Packages
500 http://archive.ubuntu.com/ubuntu/ trusty-security/main i386 Packages
100 /var/lib/dpkg/status
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: kernel-bug
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https://bugs.launchpad.net/bugs/1451360
Title:
Kernel OOPS in 3.13.0-51 due to NULL pointer after kernel upgrade
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