kernel crash apparently involving telepathy
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
High
|
Unassigned |
Bug Description
http://
Sep 21 12:38:02 pratchett org.freedesktop
Sep 21 12:38:02 pratchett kernel: [45277.692643] BUG: unable to handle kernel NULL pointer dereference at (null)
Sep 21 12:38:02 pratchett kernel: [45277.692685] IP: [<ffffffff816ad
Sep 21 12:38:02 pratchett kernel: [45277.692714] PGD 877fe067 PUD 0
Sep 21 12:38:02 pratchett kernel: [45277.692731] Oops: 0002 [#1] SMP
Sep 21 12:38:02 pratchett kernel: [45277.692748] Modules linked in: xt_conntrack ipt_REJECT nf_reject_ipv4 ebtable_filter ebtables ip6table_filter ip6_tables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) ctr ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_
Sep 21 12:38:02 pratchett kernel: [45277.693306] CPU: 2 PID: 9668 Comm: Chrome_ChildIOT Tainted: G OE 3.19.0-29-generic #31-Ubuntu
Sep 21 12:38:02 pratchett kernel: [45277.693345] Hardware name: Dell Inc. Dell System XPS L322X/0PJHXN, BIOS A09 05/15/2013
Sep 21 12:38:02 pratchett kernel: [45277.693383] task: ffff8801bf7489d0 ti: ffff8801f8c4c000 task.ti: ffff8801f8c4c000
Sep 21 12:38:02 pratchett kernel: [45277.693426] RIP: 0010:[<
Sep 21 12:38:02 pratchett kernel: [45277.693462] RSP: 0018:ffff8801f8
Sep 21 12:38:02 pratchett kernel: [45277.693493] RAX: 0000000000000292 RBX: ffff8801c1ddb510 RCX: 0000000000000000
Sep 21 12:38:02 pratchett kernel: [45277.693533] RDX: 0000000000000000 RSI: 0000000000000292 RDI: ffff8801c1ddb524
Sep 21 12:38:02 pratchett kernel: [45277.693574] RBP: ffff8801f8c4fb58 R08: 0000000000000300 R09: ffff880236c03600
Sep 21 12:38:02 pratchett kernel: [45277.693605] R10: 0000000000000292 R11: ffff8801f8c4ffd8 R12: ffff8801c1ddb510
Sep 21 12:38:02 pratchett kernel: [45277.693635] R13: ffff8801c1ddb524 R14: ffff8801c1ddb480 R15: ffff8801c1ddaa00
Sep 21 12:38:02 pratchett kernel: [45277.693666] FS: 00007fb4c2de370
Sep 21 12:38:02 pratchett kernel: [45277.693700] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 21 12:38:02 pratchett kernel: [45277.693724] CR2: 0000000000000000 CR3: 00000001724bf000 CR4: 00000000001407e0
Sep 21 12:38:02 pratchett kernel: [45277.693754] Stack:
Sep 21 12:38:02 pratchett kernel: [45277.693763] 0000000000000000 000000000000001c 0000000000000000 ffff8801c1ddb510
Sep 21 12:38:02 pratchett kernel: [45277.693796] ffff8801f8c4fc18 ffffffff81762ce4 ffff880200000000 ffff8801c1ddb510
Sep 21 12:38:02 pratchett kernel: [45277.693837] ffff8801f8c4ff08 ffff8801f8c4fc88 0000001c0000001c 000000000000001c
Sep 21 12:38:02 pratchett kernel: [45277.693870] Call Trace:
Sep 21 12:38:02 pratchett kernel: [45277.693889] [<ffffffff81762
Sep 21 12:38:02 pratchett kernel: [45277.693917] [<ffffffff816a5
Sep 21 12:38:02 pratchett kernel: [45277.693942] [<ffffffff816a5
Sep 21 12:38:02 pratchett kernel: [45277.693971] [<ffffffff816a5
Sep 21 12:38:02 pratchett kernel: [45277.693997] [<ffffffff811fd
Sep 21 12:38:02 pratchett kernel: [45277.694022] [<ffffffff811f4
Sep 21 12:38:02 pratchett kernel: [45277.694047] [<ffffffff8112c
Sep 21 12:38:02 pratchett kernel: [45277.694073] [<ffffffff816a6
Sep 21 12:38:02 pratchett kernel: [45277.694097] [<ffffffff816a6
Sep 21 12:38:02 pratchett kernel: [45277.694121] [<ffffffff817cb
Sep 21 12:38:02 pratchett kernel: [45277.694147] Code: 8d 6f 14 41 54 53 48 89 fb 4c 89 ef 49 89 f4 48 83 ec 08 e8 9c de 11 00 48 8b 53 08 49 89 1c 24 4c 89 ef 48 89 c6 49 89 54 24 08 <4c> 89 22 83 43 10 01 4c 89 63 08 e8 59 dd 11 00 48 83 c4 08 5b
Sep 21 12:38:02 pratchett kernel: [45277.694274] RIP [<ffffffff816ad
Sep 21 12:38:02 pratchett kernel: [45277.694308] RSP <ffff8801f8c4fb38>
That is a kernel bug -- no action any program can take should ever lead to a kernel panic.
Judging from the stack trace:
Telepathy sends a message, using the sendmsg system call, on a socket of type PF_UNIX.
The process doing that is inside a seccomp compartment, i.e. does not have direct system access, so the system call is handled by marshalling the arguments to a data structure, and sending them to another process (so that process can look at whether the access is allowed, implementing more complex policies than what the kernel allows).
The message is appended to the socket that will transport it to the program handling this.
During this append operation, an invalid pointer is found. This can happen if a data structure is uninitialized, but this is certainly a kernel bug if there is a code path that can leave an uninitialized structure somewhere where it would be expected to be valid.
The second error is a repeat of the first -- the data structure didn't get any better in the meantime.
I'd report this as a bug against the kernel package that you are using, in this case linux-image-
This appears to be a weird interaction between Chrome and Telepathy that might itself warrant investigation, but the primary issue is that there is a way to reach an invalid state, and that should never happen.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.19.0-29-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CurrentDesktop: Unity
Date: Tue Sep 22 13:39:21 2015
DistributionCha
# This is a distribution channel descriptor
# For more information see http://
canonical-
HibernationDevice: RESUME=
InstallationDate: Installed on 2013-08-21 (762 days ago)
InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20120703-15:08
MachineType: Dell Inc. Dell System XPS L322X
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.143.3
SourcePackage: linux
UpgradeStatus: Upgraded to vivid on 2015-04-24 (150 days ago)
dmi.bios.date: 05/15/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0PJHXN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Dell System XPS L322X
dmi.sys.vendor: Dell Inc.
Changed in linux (Ubuntu): | |
importance: | Undecided → High |
tags: | added: bios-outdated-a10 |
tags: | added: regression-update |
This change was made by a bot.