[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1949359
Title:
crash-utility segfault in ubuntu20.04
Status in linux package in Ubuntu:
Expired
Bug description:
[environment]
* ubuntu version
```
jeff-kvm@ubuntu:/var/crash$ uname -r
5.13.0-17-generic
```
* crash version
```
jeff-kvm@ubuntu:/var/crash$ crash -v
crash 7.2.8
...
GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
```
[Description of problem:]
```
root@ubuntu:/var/crash/202110312024# crash dump.202110312024
/home/jeff-kvm/Downloads/jeff/usr/lib/debug/boot/vmlinux-5.13.0-17-generic
crash 7.2.8
Copyright (C) 2002-2020 Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation
Copyright (C) 1999-2006 Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited
Copyright (C) 2006, 2007 VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011 NEC Corporation
Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
This program is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions. Enter "help copying" to see the conditions.
This program has absolutely no warranty. Enter "help warranty" for details.
GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu"...
WARNING: kernel relocated [362MB]: patching 139284 gdb minimal_symbol
values
please wait... (patching 139284 gdb minimal_symbol values) Segmentation fault
(core dumped)
```
And we can see the following error report(see dmesg):
```
[ 1198.548759] crash[3580]: segfault at 7ffffc57dff8 ip 0000560ea1af5ec0 sp
00007ffffc57e000 error 6 in crash[560ea1ad9000+43f000]
[ 1198.548768] Code: 05 a5 3d 6c 00 48 39 78 08 0f 97 c0 0f b6 c0 c3 66 2e 0f
1f 84 00 00 00 00 00 f3 0f 1e fa 41 57 41 89 f7 41 56 41 55 49 89 cd <41> 54 49
89 fc 55 48 89 d5 53 4c 89 cb 48 83 ec 48 4c 89 04 24 64
```
And we can see the crash-utility proc mem map(_usr_bin_crash.0.crash):
```
....
7fb97b7d4000-7fb97b7d5000 rw-p 0002d000 08:05 2234671
/usr/lib/x86_64-linux-gnu/ld-2.31.so
7fb97b7d5000-7fb97b7d6000 rw-p 00000000 00:00 0
7ffffc57e000-7ffffcd7e000 rw-p 00000000 00:00 0
[stack]
7ffffcdb1000-7ffffcdb5000 r--p 00000000 00:00 0
[vvar]
7ffffcdb5000-7ffffcdb7000 r-xp 00000000 00:00 0
[vdso]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0
[vsyscall]
...
ProcStatus:
```
it seems that it's stack overflow,because segfault at 7ffffc57dff8,but the
[stack]: 7ffffc57e000-7ffffcd7e000
[How to reproducible]
always
Steps to Reproduce:
1. Generate a vmcore with the sysrq
2. crash vmlinux vmcore
3.
Actual results:
Segmentation fault (core dumped)
Expected results:
crash can work as expected.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211
not found.
CasperMD5CheckResult: skip
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2021-09-16 (46 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Lsusb-t:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/7p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
MachineType: VMware, Inc. VMware Virtual Platform
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-17-generic
root=UUID=01b5bca7-25cc-400f-a6ce-fae7939734cc ro find_preseed=/preseed.cfg
auto noprompt priority=critical locale=en_US quiet crashkernel=512M-:192M
ProcVersionSignature: Ubuntu 5.13.0-17.17~20.04.1-generic 5.13.14
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.13.0-17-generic N/A
linux-backports-modules-5.13.0-17-generic N/A
linux-firmware 1.187.9
RfKill:
Tags: focal
Uname: Linux 5.13.0-17-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: N/A
_MarkForUpload: True
dmi.bios.date: 07/22/2020
dmi.bios.release: 4.6
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.name: 440BX Desktop Reference Platform
dmi.board.vendor: Intel Corporation
dmi.board.version: None
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.ec.firmware.release: 0.0
dmi.modalias:
dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd07/22/2020:br4.6:efr0.0:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:sku:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: VMware Virtual Platform
dmi.product.version: None
dmi.sys.vendor: VMware, Inc.
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