| 2017-04-19 17:45:35 |
zappacor |
bug |
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added bug |
| 2017-04-24 08:57:40 |
Thomas Huth |
affects |
qemu |
qemu (Ubuntu) |
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| 2017-04-24 09:41:02 |
Christian Ehrhardt |
nominated for series |
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Ubuntu Xenial |
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| 2017-04-24 09:41:02 |
Christian Ehrhardt |
bug task added |
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qemu (Ubuntu Xenial) |
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| 2017-04-24 09:41:11 |
Christian Ehrhardt |
qemu (Ubuntu): status |
New |
Fix Released |
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| 2017-04-24 09:41:14 |
Christian Ehrhardt |
qemu (Ubuntu Xenial): importance |
Undecided |
Medium |
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| 2017-04-24 09:41:17 |
Christian Ehrhardt |
qemu (Ubuntu Xenial): status |
New |
Triaged |
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| 2017-04-24 09:47:19 |
Christian Ehrhardt |
qemu (Ubuntu Xenial): assignee |
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ChristianEhrhardt (paelzer) |
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| 2017-04-25 09:20:56 |
Christian Ehrhardt |
bug |
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added subscriber Ubuntu Server Team |
| 2017-04-26 08:24:36 |
Christian Ehrhardt |
description |
Hi guys,
I'm getting this qemu crash message:
>>> qemu-system-x86_64: /build/qemu-TziMIO/qemu-2.5+dfsg/block/vvfat.c:2290: commit_direntries: Assertion `!strncmp(s->directory.pointer, "QEMU", 4)' failed.
>>> Aborted (core dumped)
when launching qemu with this options for a VVFAT drive:
>>> -drive file=fat:rw:./ROOT,if=virtio
(same happens when using cache=none and/or if=ide)
"uname -a" system info is:
>>> Linux RJZ-WRK-LNX 4.4.0-72-generic #93-Ubuntu SMP Fri Mar 31 14:07:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
and "qemu --version" is:
>>> QEMU emulator version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.10), Copyright (c) 2003-2008 Fabrice Bellard
Not sure what logs to attach but I'll be glad to upload whatever needed.
Thanks in advance for you help,
Rolando |
[Impact]
* enabling vvfat with rw set breaks qemu once it writes something
* Fix is a backport of a small upstream fix
[Test Case]
* 1. get a guest that works (via uvtoools-libvirt or whatever you prever)
* 2. get the qemu commandline that it is started with, in my case:
$ sudo kvm -m 1024 -drive file=/dev/sdb,format=raw,cache=none,index=0,media=disk
* 3. create a dir and add a file to check to share in vvfat mode later
$ mkdir /tmp/sharevvfat
$ echo host > /tmp/sharevvfat/hostfoo
* 4. shutdown guest and start it again with the path as vvfat set to share rw mode, to do so append
-drive format=vvfat,file=fat:rw:/tmp/sharevvfat/,if=virtio
* in the guest mount the block device and write to it
$ mount /dev/vdc1 /mnt
$ echo guest > /mnt/guestfoo
$ sync
Currently crashes:
qemu-system-x86_64: /build/qemu-iZpOAh/qemu-2.5+dfsg/block/vvfat.c:2290: commit_direntries: Assertion `!strncmp(s->directory.pointer, "QEMU", 4)' failed. Aborted (core dumped)
Expected: work to write files from guest and getting no fails/crashes
[Regression Potential]
* I'd consider the potential next-to-none for general qemu/kvm use cases
and low for cases using vvfat for the following reasons:
* The fix is local and only executed in vvfat code, so affecting other
qemu use cases should be next to impossible
* code is upstream and in further Ubuntu Releases quite a while without
issues showing up
* General regression checks showed no issue
[Other Info]
* n/a
---
Hi guys,
I'm getting this qemu crash message:
>>> qemu-system-x86_64: /build/qemu-TziMIO/qemu-2.5+dfsg/block/vvfat.c:2290: commit_direntries: Assertion `!strncmp(s->directory.pointer, "QEMU", 4)' failed.
>>> Aborted (core dumped)
when launching qemu with this options for a VVFAT drive:
>>> -drive file=fat:rw:./ROOT,if=virtio
(same happens when using cache=none and/or if=ide)
"uname -a" system info is:
>>> Linux RJZ-WRK-LNX 4.4.0-72-generic #93-Ubuntu SMP Fri Mar 31 14:07:41 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
and "qemu --version" is:
>>> QEMU emulator version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.10), Copyright (c) 2003-2008 Fabrice Bellard
Not sure what logs to attach but I'll be glad to upload whatever needed.
Thanks in advance for you help,
Rolando |
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| 2017-04-26 08:31:39 |
Christian Ehrhardt |
qemu (Ubuntu Xenial): status |
Triaged |
Fix Committed |
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| 2017-05-03 12:59:46 |
Christian Ehrhardt |
bug |
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added subscriber Marc Deslauriers |
| 2017-05-03 13:51:11 |
Robie Basak |
bug |
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added subscriber Ubuntu Stable Release Updates Team |
| 2017-05-03 13:51:16 |
Robie Basak |
bug |
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added subscriber SRU Verification |
| 2017-05-03 13:51:19 |
Robie Basak |
tags |
directory.pointer direntries vvfat |
directory.pointer direntries verification-needed vvfat |
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| 2017-05-08 15:37:51 |
Christian Ehrhardt |
bug watch added |
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http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=419929 |
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| 2017-05-08 15:38:11 |
Christian Ehrhardt |
tags |
directory.pointer direntries verification-needed vvfat |
directory.pointer direntries verification-done vvfat |
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| 2017-05-16 13:43:42 |
Launchpad Janitor |
qemu (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
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| 2017-05-16 13:43:55 |
Andy Whitcroft |
removed subscriber Ubuntu Stable Release Updates Team |
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