[Bug 1640382] Re: Segfault event notifier because of race condition
Robie Basak
1640382 at bugs.launchpad.net
Wed Dec 14 11:15:49 UTC 2016
Hello Seyeong, or anyone else affected,
Accepted qemu into trusty-proposed. The package will build now and be
available at https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-
2ubuntu1.31 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.
If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed. In either case, details of your testing will help
us make a better decision.
Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!
** Changed in: qemu (Ubuntu Trusty)
Status: In Progress => Fix Committed
** Tags added: verification-needed
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https://bugs.launchpad.net/bugs/1640382
Title:
Segfault event notifier because of race condition
Status in Ubuntu Cloud Archive:
Confirmed
Status in qemu package in Ubuntu:
Fix Released
Status in qemu source package in Trusty:
Fix Committed
Bug description:
[Impact]
Sometimes instance get crashed with segfault on event notifier
gdb traceback is below[1]
trying to do SRU with below commits[2][3]
[Testcase]
I can't provide the step to reproduce this issue
but provided gdb backtrace for this.
[Regeression Potential]
Above patch is merged on 2014, and it's quite simple patch.
[Other Info]
related link attached
[1] http://pastebin.ubuntu.com/23449623/
[2] http://git.qemu.org/?p=qemu.git;a=commit;h=924fe1293c3e7a3c787bbdfb351e7f168caee3e9
[3] http://git.qemu.org/?p=qemu.git;a=commit;h=df54f5efed9b3be7f40e14113cc1f13f5889e644 ( cherrypicked commit )
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