This bug was fixed in the package linux - 3.16.0-16.22
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linux (3.16.0-16.22) utopic; urgency=low
[ Andy Whitcroft ]
* Revert SAUCE: x86/xen: Fix setup of 64bit kernel pagetables
* [Config] tools -- only build common tools when enabled
* [Config] follow rename of
** Also affects: linux (Ubuntu Utopic)
Importance: Medium
Assignee: Chris J Arges (arges)
Status: In Progress
** Changed in: linux (Ubuntu Utopic)
Status: In Progress = Fix Committed
** Changed in: linux (Ubuntu Trusty)
Status: Fix Released = Invalid
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merged to upstream as commit:
https://github.com/torvalds/linux/commit/0738854939e6ec9b9111a8cfc0ca1dfa3cff6b2e
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Title:
Kernel
Ming Lei's patch is here:
https://lkml.org/lkml/2014/9/2/307
** Changed in: linux (Ubuntu)
Status: Confirmed = In Progress
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@tom-leiming
I've tested this patch and I am able to mount a bcache device on top of
virtio disks without hangs or the original BUG_ON on startup. Please add
my 'Tested-By' in the patch upstream.
Thanks,
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It should be a block-core problem introduced by this commit 05f1dd531521,
anyone care to test the
attached patch?
** Patch added: block: merge segment in need
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1359146/+attachment/4192437/+files/blk-no-sg-merge.patch
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** Tags added: patch
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Title:
Kernel crash when mounting bcache on a vm with virtio
Status in “linux” package in Ubuntu:
Right now 3.17-rc1 would show the virtio related issue only. With the current
3.16 we have there is still the writeback hung task issue mingled in (except
with a kernel version of 3.16.0-10.15 or later), see bug #1357295.
Using Xen paravirt drives, there is no crash. This hints that it is
** Tags added: bug-exists-upstream
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Title:
Kernel crash when mounting bcache on a vm with virtio
Status in “linux” package in
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
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Title:
Kernel crash when mounting bcache on a
I can easily reproduce the issue; and it seems that this is a regression
between 3.13 (where this works) and 3.16.
I'll work on doing a regression bisect. It may end up being one or two issues
as there is a warn on boot before mounting, and when mounting /dev/bcache0 we
get the crash.
**
I did a bisect and found 05f1dd5315217398fc8d122bdee80f96a9f21274 to be the
first bad commit.
I reverted this from 3.17, and found that it did resolve the issue. I'll
continue to investigate and see if an additional patch can fix this issue
instead of a revert.
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The virtual machine hangs some seconds after mount command of bcache
device.
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Title:
Kernel crash when mounting bcache on a vm with
I've tested with upstream kernel, and I've got also an hang of the virtual
machine.
kernel tested is :
linux-image-3.17.0-031700rc1
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At boot ime after crash I got:
http://paste.ubuntu.com/8106758/
trace begins at line 466
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Title:
Kernel crash when mounting bcache
** Description changed:
bcache used in a virtual machine:
If you create a bcache device with caching device and backing device on
virtio disks, it will let you do your work until you mount it where it
crashes the virtual machine (virtual machine is utopic, host is trusty).
For
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.17 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
Also, was there a prior release that did not exhibit this bug?
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Title:
Kernel crash when mounting bcache on a vm with virtio
I'll try upstream kernel, and I will try previous release. Only utopic
kernel releases, or also trusty ones?
Le 20/08/2014 18:07, Joseph Salisbury a écrit :
Also, was there a prior release that did not exhibit this bug?
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