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Bug 1736871 - [abrt] davfs2: __strlen_avx2(): umount.davfs killed by SIGSEGV
Summary: [abrt] davfs2: __strlen_avx2(): umount.davfs killed by SIGSEGV
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: davfs2
Version: 30
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Felix Schwarz
QA Contact: Fedora Extras Quality Assurance
URL: https://retrace.fedoraproject.org/faf...
Whiteboard: abrt_hash:1ab4569e8239907b61a7f98679f...
: 1710968 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-08-02 08:53 UTC by Rudolf E. Steiner
Modified: 2020-01-12 01:15 UTC (History)
6 users (show)

Fixed In Version: davfs2-1.5.6-1.fc30
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-01-12 01:15:15 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)
File: backtrace (10.28 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: cgroup (331 bytes, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: core_backtrace (972 bytes, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: cpuinfo (1.73 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: dso_list (2.18 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: environ (3.41 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: exploitable (100 bytes, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: limits (1.29 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: maps (14.62 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: mountinfo (3.55 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: open_fds (125 bytes, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
File: proc_pid_status (1.33 KB, text/plain)
2019-08-02 08:53 UTC, Rudolf E. Steiner 		no flags Details
View All

Description Rudolf E. Steiner 2019-08-02 08:53:21 UTC 
Description of problem:
unmounting a davfs-folder

Version-Release number of selected component:
davfs2-1.5.4-9.fc30

Additional info:
reporter:       libreport-2.10.1
backtrace_rating: 4
cmdline:        /sbin/umount.davfs /home/res/ownCloud
crash_function: __strlen_avx2
executable:     /usr/sbin/umount.davfs
journald_cursor: s=ce8aa62e822744b9b82c0595804de973;i=2410f;b=8db2935d020846978c95736808f0942c;m=1f6ccf25;t=58f1e57eb43cf;x=9f2fa3cfabf72efb
kernel:         5.1.20-300.fc30.x86_64
rootdir:        /
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (3 frames)
 #0 __strlen_avx2 at ../sysdeps/x86_64/multiarch/strlen-avx2.S:65
 #1 count_concat at ne_string.c:132
 #2 ne_concat at ne_string.c:179
Comment 1 Rudolf E. Steiner 2019-08-02 08:53:24 UTC 
Created attachment 1599569 [details]
File: backtrace
Comment 2 Rudolf E. Steiner 2019-08-02 08:53:26 UTC 
Created attachment 1599570 [details]
File: cgroup
Comment 3 Rudolf E. Steiner 2019-08-02 08:53:27 UTC 
Created attachment 1599571 [details]
File: core_backtrace
Comment 4 Rudolf E. Steiner 2019-08-02 08:53:28 UTC 
Created attachment 1599572 [details]
File: cpuinfo
Comment 5 Rudolf E. Steiner 2019-08-02 08:53:29 UTC 
Created attachment 1599573 [details]
File: dso_list
Comment 6 Rudolf E. Steiner 2019-08-02 08:53:31 UTC 
Created attachment 1599574 [details]
File: environ
Comment 7 Rudolf E. Steiner 2019-08-02 08:53:32 UTC 
Created attachment 1599575 [details]
File: exploitable
Comment 8 Rudolf E. Steiner 2019-08-02 08:53:33 UTC 
Created attachment 1599576 [details]
File: limits
Comment 9 Rudolf E. Steiner 2019-08-02 08:53:35 UTC 
Created attachment 1599577 [details]
File: maps
Comment 10 Rudolf E. Steiner 2019-08-02 08:53:36 UTC 
Created attachment 1599578 [details]
File: mountinfo
Comment 11 Rudolf E. Steiner 2019-08-02 08:53:38 UTC 
Created attachment 1599579 [details]
File: open_fds
Comment 12 Rudolf E. Steiner 2019-08-02 08:53:39 UTC 
Created attachment 1599580 [details]
File: proc_pid_status
Comment 13 Filipe Rosset 2019-08-05 04:22:32 UTC 
I updated davfs2 to 1.5.5 for F31+

Let me know if its working fine for you, so I can go ahead and upgrade also for F30/F29 and maybe EPEL.

https://src.fedoraproject.org/rpms/davfs2/c/b5daac4efa37402af756931cd75ac5bb59ca214a?branch=master

https://koji.fedoraproject.org/koji/taskinfo?taskID=36799564
Comment 14 Rudolf E. Steiner 2019-08-05 08:15:19 UTC 
With "davfs2-1.5.5-1.fc31.x86_64" there is no "SIGSEGV" anymore, but the command "umount <mountpoint>" does not do anything (the mountpoint will be still active).
Comment 15 Felix Schwarz 2019-11-28 09:09:29 UTC 
Rudolf: if you are still seeing the problem with 1.5.5 I guess the best way to fix it is to create a support ticket upstream: http://savannah.nongnu.org/support/?group=davfs2
Comment 16 Felix Schwarz 2019-11-28 09:28:48 UTC 
*** Bug 1749057 has been marked as a duplicate of this bug. ***
Comment 17 Felix Schwarz 2019-11-28 09:32:44 UTC 
Filipe: I just noticed the comment by Mathias Habluetzel (https://bugzilla.redhat.com/show_bug.cgi?id=1710968#c3) who mentioned that we might be able to workaround this by using "-std=c89". Should submit a PR for this?

@everyone: I could create a COPR pretty quickly and push an updated build if there are some testers who are willing to try these builds.
Comment 18 Felix Schwarz 2019-11-28 09:38:20 UTC 
Rudolf: I just noticed that you marked this bug as "private". This makes it harder for other users to collaborate on a solution. Would you mind if we remove the "mark as private"?
Comment 19 Rudolf E. Steiner 2019-11-28 09:42:00 UTC 
Felix Schwarz wrote:

> Rudolf: if you are still seeing the problem with 1.5.5 I guess the
> best way to fix it is to create a support ticket upstream:
> http://savannah.nongnu.org/support/?group=davfs2

This has already been done by another user: http://savannah.nongnu.org/support/?110136
Comment 20 Rudolf E. Steiner 2019-11-28 09:47:31 UTC 
Felix Schwarz wrote:

> Would you mind if we remove the "mark as private"?

No. Please make the report public!
Comment 21 Felix Schwarz 2019-11-28 09:47:44 UTC 
Thanks for reporting back.

quoting upstream's Werner Baumann https://savannah.nongnu.org/bugs/?56286#comment5
> The bug is fixed in the CVS-sources. I intend to do a bugfix release soon, but first want to fix at least one other bug. 

Maybe it is the easiest thing to wait a bit more or someone would have to extract the patch from CVS (*shudder*) so Fedora could ship that one on top of 1.5.5.
Comment 22 Rudolf E. Steiner 2019-11-28 09:52:47 UTC 
Felix Schwarz wrote:

> Maybe it is the easiest thing to wait a bit more

+1
Comment 23 Felix Schwarz 2019-12-17 23:12:00 UTC 
making bug public as per comment 20
Comment 24 Felix Schwarz 2019-12-18 15:06:43 UTC 
*** Bug 1710968 has been marked as a duplicate of this bug. ***
Comment 25 Fedora Update System 2019-12-28 10:39:32 UTC 
FEDORA-2019-d671e74bd5 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-d671e74bd5
Comment 26 Felix Schwarz 2019-12-28 10:40:52 UTC 
taking bug - try the linked update from the updates-testing repo and give karma if this update fixes the bug for you.

If you are using Fedora 31 by now please check bug 1762083 (https://bodhi.fedoraproject.org/updates/FEDORA-2019-d2b5b244ee).
Comment 27 Rudolf E. Steiner 2019-12-28 11:31:25 UTC 
It's working now ("davfs2-1.5.6-1.fc30.x86_64"). Thank you very much.
Comment 28 Fedora Update System 2020-01-04 21:17:54 UTC 
davfs2-1.5.6-1.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-d671e74bd5
Comment 29 Fedora Update System 2020-01-12 01:15:15 UTC 
davfs2-1.5.6-1.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.
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