Still no crashes seen with 4.4.0-79-generic (and newer versions). Would
consider this fixed then.
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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Uptime is now 13 days. I think we can close this one as "fixed by
4.4.0-79-generic".
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Title:
Execute NX-protected page -
Update: running 4.4.0-79-generic on the original machine with issues for
24hrs (normal workload) without kernel panics thusfar. *Crosses fingers*
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The docker1-tcn machine with vanilla kernel 4.4.70 is still up.
And on another (abmfn-staging) machine with 4.4.0-78 I've seen the
crash. According to dmesg output in the console, btrfs and other fs
modules were loaded. Probably due to an update-grub call.
After restart, I ensured that those
Okay. So we've been running 4.4.70 now for 22 hours and counting on
docker1-tcn.
/var/crash# uptime
09:45:30 up 22:25, 1 user, load average: 0,01, 0,02, 0,00
/var/crash# uname -a
Linux ossoio-docker1-tcn 4.4.70-040470-generic #201705251131 SMP Thu May 25
15:34:16 UTC 2017 x86_64 x86_64
Okay. On a different machine with different load, we've now got the same
problem:
KERNEL: /usr/lib/debug/boot/vmlinux-4.4.0-78-generic
DUMPFILE: dump.201705300948 [PARTIAL DUMP]
CPUS: 4
DATE: Tue May 30 09:48:05 2017
UPTIME: 01:47:38
LOAD AVERAGE: 0.05, 0.06, 0.04
So, I tried to revert the backing_dev_info changes and dpkg-built an
updated kernel. But that didn't work out. Either because it isn't the
cause, or because I reverted too much or too little.
After several hours of normal-load uptime, a removal of the mysql data
dir quickly caused a panic. I did
I could be on a wild goose chase here.
But one of the prominent changes between 77 and 78 is the
backing_dev_info element of the queue turning into a pointer.
Part of the "bdi" changes in this bit:
++ * UbuntuKVM guest crashed while running I/O stress test with Ubuntu kernel
++
Crash info appears the same:
KERNEL: /usr/lib/debug/boot/vmlinux-4.4.0-78-generic
DUMPFILE: dump.201705191443 [PARTIAL DUMP]
CPUS: 4
DATE: Fri May 19 14:43:31 2017
UPTIME: 00:43:02
LOAD AVERAGE: 2.53, 1.81, 2.56
TASKS: 544
NODENAME:
RELEASE:
** Tags added: kernel-unable-to-test-upstream
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Title:
Execute NX-protected page - 4.4.0-78-generic - kernel panic
Status in linux
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
Execute NX-protected page - 4.4.0-78-generic - kernel
Well. That did not go so well: there were no ZFS modules in the builds.
We've tried all of:
* http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19.8-vivid/linux-
image-3.19.8-031908-generic_3.19.8-031908.201505110938_amd64.deb
* http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.68/linux-
> Does the panic stop happening if you boot back into -77?
Yes. It's now running fine for more thant 3 hours now on -77.
Observe that we have upgraded more than one machine to -78, and only one
machine has trouble.
> Would it be possible for you to test the latest upstream stable kernel?
Ah,
Would it be possible for you to test the latest upstream stable kernel?
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the
latest v4.4 stable kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel
Does the panic stop happening if you boot back into -77?
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Title:
Execute NX-protected page - 4.4.0-78-generic - kernel panic
** Changed in: linux (Ubuntu)
Importance: Undecided => High
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Title:
Execute NX-protected page - 4.4.0-78-generic - kernel panic
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
Execute NX-protected page - 4.4.0-78-generic - kernel
Due to the nature of the data on the machine and the fact that I don't
know what apport will send, I'm unable to execute the apport-collect.
# Some data from /usr/bin/crash:
KERNEL: /usr/lib/debug/boot/vmlinux-4.4.0-78-generic
DUMPFILE: dump.201705181342 [PARTIAL DUMP]
CPUS: 4
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