Bug 804325

Summary: [abrt] kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000022 selinux_task_to_inode()
Product: [Fedora] Fedora Reporter: dan ginsberg <hibernal>
Component: kernelAssignee: Eric Paris <eparis>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, teddwebb
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:dcfa5f0bf8c86a8d2c3e94adc54f016c3ca23e60
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-09-18 15:47:05 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description dan ginsberg 2012-03-17 20:14:16 UTC 
libreport version: 2.0.8
abrt_version:   2.0.7
cmdline:        BOOT_IMAGE=/vmlinuz-3.2.9-2.fc16.x86_64 root=/dev/mapper/VolGroup-lv_root ro rd.md=0 rd.dm=0 rd.lvm.lv=VolGroup/lv_swap KEYTABLE=us quiet SYSFONT=latarcyrheb-sun16 rhgb rd.lvm.lv=VolGroup/lv_root rd.luks.uuid=luks-ea193c20-8b01-495a-b110-f8d68a6066ad LANG=en_US.UTF-8
kernel:         3.2.9-2.fc16.x86_64
reason:         BUG: unable to handle kernel NULL pointer dereference at 0000000000000022
time:           Sat 17 Mar 2012 12:54:54 PM PDT

backtrace:
:BUG: unable to handle kernel NULL pointer dereference at 0000000000000022
:IP: [<ffffffff8126825b>] selinux_task_to_inode+0x1b/0x30
:PGD a6dd2067 PUD a6db8067 PMD 0 
:Oops: 0002 [#1] SMP 
:CPU 1 
:Modules linked in: ath5k ath mac80211 cfg80211 tcp_lp ppdev parport_pc lp parport fuse lockd ip6t_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables arc4 i2c_i801 microcode joydev hp_wmi serio_raw sparse_keymap snd_hda_codec_hdmi snd_hda_codec_conexant iTCO_wdt iTCO_vendor_support snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm rfkill snd_timer snd soundcore snd_page_alloc r8169 mii uinput sunrpc xts gf128mul dm_crypt ums_realtek usb_storage wmi i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: cfg80211]
:Pid: 3516, comm: pkill Not tainted 3.2.9-2.fc16.x86_64 #1 Hewlett-Packard Compaq Presario CQ60 Notebook PC/3612
:RIP: 0010:[<ffffffff8126825b>]  [<ffffffff8126825b>] selinux_task_to_inode+0x1b/0x30
:RSP: 0018:ffff8800a6d7fc68  EFLAGS: 00010286
:RAX: 0000000000000000 RBX: ffff88009f93c590 RCX: 0000000000000000
:RDX: 00000000000000e9 RSI: ffff8800af0535e0 RDI: ffff88009f93c590
:RBP: ffff8800a6d7fc68 R08: 0000000000000006 R09: ffff8800af077ab8
:R10: ffff8800af077a80 R11: 0000000000800000 R12: ffff8800af0535e0
:R13: ffff8800af077a80 R14: ffff8800a1768b40 R15: ffff8800af077a80
:FS:  00007f8e8caac700(0000) GS:ffff8800bb880000(0000) knlGS:0000000000000000
:CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
:CR2: 0000000000000022 CR3: 00000000a6ddf000 CR4: 00000000000406e0
:DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
:DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
:Process pkill (pid: 3516, threadinfo ffff8800a6d7e000, task ffff8800902ac590)
:Stack:
: ffff8800a6d7fc78 ffffffff81265f36 ffff8800a6d7fcb8 ffffffff811de3e2
: 0000000000000000 ffff8800a6d7fde0 ffff8800a6d7fe48 ffff8800a6d7fde0
: ffff8800a6d7fe48 ffff8800a6d7fd70 ffff8800a6d7fd38 ffffffff81188276
:Call Trace:
: [<ffffffff81265f36>] security_task_to_inode+0x16/0x20
: [<ffffffff811de3e2>] pid_revalidate+0x92/0x100
: [<ffffffff81188276>] do_lookup+0x236/0x3a0
: [<ffffffff81186938>] ? inode_permission+0x48/0x100
: [<ffffffff8116662b>] ? kmem_cache_alloc_trace+0x10b/0x140
: [<ffffffff81189df0>] do_last+0xe0/0x8f0
: [<ffffffff8118a712>] path_openat+0xd2/0x3c0
: [<ffffffff8118ab22>] do_filp_open+0x42/0xa0
: [<ffffffff8119685f>] ? alloc_fd+0x4f/0x150
: [<ffffffff8117a3a7>] do_sys_open+0xf7/0x1d0
: [<ffffffff810ce4ba>] ? audit_syscall_entry+0x23a/0x350
: [<ffffffff8117a4a0>] sys_open+0x20/0x30
: [<ffffffff815ec682>] system_call_fastpath+0x16/0x1b
:Code: 5d 48 8b 40 68 8b 40 04 89 06 c3 0f 1f 44 00 00 55 48 89 e5 66 66 66 66 90 48 8b 97 48 04 00 00 48 8b 46 38 48 8b 52 68 8b 52 04 <c6> 40 22 01 89 50 1c 5d c3 66 66 66 2e 0f 1f 84 00 00 00 00 00 
:RIP  [<ffffffff8126825b>] selinux_task_to_inode+0x1b/0x30
: RSP <ffff8800a6d7fc68>
:CR2: 0000000000000022

comment:
:logged in as one use
:switch user to another account
:enter password and submit
:abrt popup ( followed by successfull log in ).
:
:not sure if at some point prior to all of this the laptop had gone to sleep

smolt_data:
:
:
:General
:=================================
:UUID: 423204aa-7873-4e2f-a297-c7438a1417e7
:OS: Fedora release 16 (Verne)
:Default run level: Unknown
:Language: en_US.UTF-8
:Platform: x86_64
:BogoMIPS: 3989.57
:CPU Vendor: GenuineIntel
:CPU Model: Pentium(R) Dual-Core CPU       T4200  @ 2.00GHz
:CPU Stepping: 10
:CPU Family: 6
:CPU Model Num: 23
:Number of CPUs: 2
:CPU Speed: 2000
:System Memory: 2943
:System Swap: 4991
:Vendor: Hewlett-Packard
:System: Compaq Presario CQ60 Notebook PC PCID
:Form factor: Notebook
:Kernel: 3.2.9-2.fc16.x86_64
:SELinux Enabled: 1
:SELinux Policy: targeted
:SELinux Enforce: Enforcing
:MythTV Remote: Unknown
:MythTV Role: Unknown
:MythTV Theme: Unknown
:MythTV Plugin: 
:MythTV Tuner: -1
:
:
:Devices
:=================================
:(32902:10521:4156:13835) pci, None, PCI/ISA, ICH9M LPC Interface Controller
:(5772:28:4156:4986) pci, ath5k, ETHERNET, AR5BXB63 (Foxconn) 802.11bg Mini PCIe NIC
:(32902:10818:4156:13835) pci, i915, VIDEO, Mobile 4 Series Chipset Integrated Graphics Controller
:(32902:10819:4156:13835) pci, None, VIDEO, Mobile 4 Series Chipset Integrated Graphics Controller
:(32902:10560:4156:13835) pci, pcieport, PCI/PCI, 82801I (ICH9 Family) PCI Express Port 1
:(32902:10562:4156:13835) pci, pcieport, PCI/PCI, 82801I (ICH9 Family) PCI Express Port 2
:(4332:33078:4156:13835) pci, r8169, ETHERNET, RTL8101E/RTL8102E PCI Express Fast Ethernet controller
:(32902:10546:4156:13835) pci, None, NONE, 82801I (ICH9 Family) Thermal Subsystem
:(32902:10558:4156:13835) pci, snd_hda_intel, MULTIMEDIA, 82801I (ICH9 Family) HD Audio Controller
:(32902:10537:4156:13835) pci, ahci, STORAGE, ICH9M/M-E SATA AHCI Controller
:(32902:10549:4156:13835) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #2
:(32902:10544:4156:13835) pci, i801_smbus, SERIAL, 82801I (ICH9 Family) SMBus Controller
:(32902:9288:4156:13835) pci, None, PCI/PCI, 82801 Mobile PCI Bridge
:(32902:10548:4156:13835) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #1
:(32902:10551:4156:13835) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #4
:(32902:10552:4156:13835) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #5
:(32902:10816:4156:13835) pci, agpgart-intel, HOST/PCI, Mobile 4 Series Chipset Memory Controller Hub
:(32902:10550:4156:13835) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #3
:(32902:10553:4156:13835) pci, uhci_hcd, USB, 82801I (ICH9 Family) USB UHCI Controller #6
:(32902:10554:4156:13835) pci, ehci_hcd, USB, 82801I (ICH9 Family) USB2 EHCI Controller #1
:(32902:10556:4156:13835) pci, ehci_hcd, USB, 82801I (ICH9 Family) USB2 EHCI Controller #2
:
:
:Filesystem Information
:=================================
:device mtpt type bsize frsize blocks bfree bavail file ffree favail
:-------------------------------------------------------------------
:/dev/mapper/VolGroup-lv_root / ext4 4096 4096 13081819 11712604 11057244 3276800 3139530 3139530
:/dev/sda2 /boot ext4 1024 1024 508745 411055 385455 128016 127785 127785
:/dev/mapper/VolGroup-lv_home /home ext4 4096 4096 24513411 23075395 21847824 6144000 6110502 6110502
:
Comment 1 Dave Jones 2012-03-19 14:33:10 UTC 
if this was after a hibernate, it's possible that this may be memory corruption from the i915 driver. (We have a ton of bugs about that already).
Comment 2 Dave Jones 2012-04-11 14:52:01 UTC 
*** Bug 811616 has been marked as a duplicate of this bug. ***
Comment 3 Josh Boyer 2012-09-18 15:47:05 UTC 
We've not seen this again since the i915 fix went in.  Closing this out.  If you see it again with 3.4.11 or 3.5.4 or newer, please let us know.