Kernel Oops 3b in libc-2.23 unable to handle pointer dereference in kernel virtual address space
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu on IBM z Systems |
Fix Released
|
High
|
Canonical Kernel Team | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Skipper Bug Screeners | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
== Comment: #0 - Robert J. Brenneman <email address hidden> - 2019-05-30 11:16:45 ==
---Problem Description---
Kernel Oops 3b in libc-2.23 unable to handle pointer dereference in virtual kernel address space
Contact Information = <email address hidden>
---uname output---
Linux ECOS0018 4.15.0-50-generic #54-Ubuntu SMP Tue May 7 05:57:08 UTC 2019 s390x s390x s390x GNU/Linux
Machine Type = z13 2964 NE1
---System Hang---
z/VM took a VMDUMP and reIPLed
(the attached and available dumps are Linux dumps)
---Debugger---
A debugger is not configured
---Steps to Reproduce---
boot system, start jenkins, let it run a couple days
Stack trace output:
05/29/19 13:24:06 Call Trace:
05/29/19 13:24:06 (?<000000000012
05/29/19 13:24:06 ?<000000000012b
05/29/19 13:24:06 ?<00000000001f4
05/29/19 13:24:06 ?<00000000008e9
05/29/19 13:24:06 ?<0000000000179
05/29/19 13:24:06 ?<000000000010c
05/29/19 13:24:06 ?<00000000008e8
05/29/19 13:24:06 ?<0000000000102
05/29/19 13:24:06 (?<000000000000
05/29/19 13:24:06 ?<0000000000103
05/29/19 13:24:06 ?<00000000001c5
Oops output:
05/29/19 13:24:06 User process fault: interruption code 003b ilc:3 in libc-2.
05/29/19 13:24:06 Failing address: 0000000000000000 TEID: 0000000000000800
05/29/19 13:24:06 Fault in primary space mode while using user ASCE.
05/29/19 13:24:06 AS:0000000710b241c7 R3:0000000000000024
05/29/19 13:24:06 Unable to handle kernel pointer dereference in virtual kernel address space
05/29/19 13:24:06 Failing address: 000003dbe0000000 TEID: 000003dbe0000403
05/29/19 13:24:06 Fault in home space mode while using kernel ASCE.
05/29/19 13:24:06 AS:0000000000ea8007 R3:0000000000000024
05/29/19 13:24:06 Oops: 003b ilc:3 ?#1? SMP
05/29/19 13:24:06 Modules linked in: veth xt_nat xt_tcpudp ipt_MASQUERADE nf_nat_
05/29/19 13:24:06 ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 dasd_fba_mod dasd_eckd_mod sha1_s390 sha_common dasd_mod
05/29/19 13:24:06 CPU: 7 PID: 0 Comm: swapper/7 Not tainted 4.15.0-50-generic #54-Ubuntu
05/29/19 13:24:06 Hardware name: IBM 2964 NE1 798 (z/VM 6.4.0)
05/29/19 13:24:06 Krnl PSW : 00000000dcb002be 0000000072762961 (__tlb_
05/29/19 13:24:06 R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
05/29/19 13:24:06 Krnl GPRS: ffffffffffffffba 000002b800000000 000002b800000003 0000000000eacac8
05/29/19 13:24:06 ffffffffffffffba 00000000000000b9 0700000000000000 000000000000000a
05/29/19 13:24:06 0404c00100000000 00000007d2fb5c38 00000007cf71fdf0 000003dbe0000000
05/29/19 13:24:06 000003dbe0000018 00000000008fe740 00000007cf71fd08 00000007cf71fcd8
05/29/19 13:24:06 Krnl Code: 000000000012b956: ec2c002a027f clij %r2,2,12,12b9aa
05/29/19 13:24:06 000000000012b95c: ec26001d037e cij %r2,3,6,12b996
05/29/19 13:24:06 #000000000012b962: 41c0b018 la %r12,24(%r11)
05/29/19 13:24:06 >000000000012b966: e548b0080000 mvghi 8(%r11),0
05/29/19 13:24:06 000000000012b96c: a7390008 lghi %r3,8
05/29/19 13:24:06 000000000012b970: b904002b lgr %r2,%r11
05/29/19 13:24:06 000000000012b974: c0e5000e8f8a brasl %r14,2fd888
05/29/19 13:24:06 000000000012b97a: a718ffff lhi %r1,-1
05/29/19 13:24:06 Call Trace:
05/29/19 13:24:06 (?<000000000012
05/29/19 13:24:06 ?<000000000012b
05/29/19 13:24:06 ?<00000000001f4
05/29/19 13:24:06 ?<00000000008e9
05/29/19 13:24:06 ?<0000000000179
05/29/19 13:24:06 ?<000000000010c
05/29/19 13:24:06 ?<00000000008e8
05/29/19 13:24:06 ?<0000000000102
05/29/19 13:24:06 (?<000000000000
05/29/19 13:24:06 ?<0000000000103
05/29/19 13:24:06 ?<00000000001c5
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 01.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 04.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 05.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 00.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 06.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 02.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 03.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 07.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 07.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 07.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 07.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 07.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 07.
05/29/19 13:24:06 virtual machine is placed in CP mode due to a SIGP stop from CPU 07.
05/29/19 13:24:06 ?<00000000001c5
05/29/19 13:24:06 ?<0000000000117
05/29/19 13:24:06 ?<00000000008e8
05/29/19 13:24:06 ?<0000000000000
05/29/19 13:24:06 Last Breaking-
05/29/19 13:24:06 ?<000000000012b
05/29/19 13:24:06
05/29/19 13:24:06 Kernel panic - not syncing: Fatal exception in interrupt
System Dump Location:
I will attach dumps here
*Additional Instructions for <email address hidden>:
-Attach sysctl -a output output to the bug.
tags: | added: architecture-s39064 bugnameltc-177920 severity-high targetmilestone-inin18043 |
Changed in ubuntu: | |
assignee: | nobody → Skipper Bug Screeners (skipper-screen-team) |
affects: | ubuntu → kernel-package (Ubuntu) |
affects: | kernel-package (Ubuntu) → linux (Ubuntu) |
description: | updated |
Changed in ubuntu-z-systems: | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | New → Fix Released |
Changed in linux (Ubuntu): | |
status: | New → Fix Released |
Changed in ubuntu-z-systems: | |
status: | In Progress → Fix Released |
Hi does this happen on Ubuntu 18.04 or 16.04.5 ? (because kernel it's '4.15')
lsb_release -a
Since libc 2.23 is mentioned I assume it's 16.04.5.
apt-cache policy libc6 linux-generic
Please can you share a dump?
As well as the 'dbginfo' output?
The z/VM version seems to be 6.4 - do you know if that happens on LPAR, too?