Has there been any additional activity on the patch upstream?
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Title:
Kernel crashed while Creating a second RAID volume on Ubuntu 16.04 OS.
To
Default Comment by Bridge
Default Comment by Bridge
Default Comment by Bridge
Default Comment by Bridge
Has there been any additional activity upstream on the V2 patch? The
patch has not landed in mainline as of yet and I have not seen an update
on the upstream thread.
Is this patch needed
** Tags removed: apport-collected bugnameltc-142479 kernel-da-key needs-
reverse-bisect severity-critical xenial
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Title:
Kernel crashed while
** Changed in: linux (Ubuntu)
Status: In Progress => Incomplete
** Changed in: linux (Ubuntu Trusty)
Status: In Progress => Incomplete
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Incomplete
** Changed in: linux (Ubuntu Yakkety)
Status: In Progress =>
Joseph,
Patch is not accepted by upstream and below is the comment from one of the
reviewer,
There seems to be problem with this patch. bdi_unregister() is also called by
blk_cleanup_queue(), and both that and del_gendisk() may be called by
cleanup_mapped_device(). This results in a panic
@Chaitra, do you have an update on the status of this patch upstream?
If not, I can contact the patch author, Sreekanth Reddy, directly.
** Also affects: linux (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Has there been any additional activity upstream on the V2 patch? The
patch has not landed in mainline as of yet and I have not seen an update
on the upstream thread.
Is this patch needed in Yakkety and Xenail or just Xenial?Is it
needed in releases prior to Xenial?
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Does this bug also happen with Yakkety(4.8 based) and Zesty(mainline
based)? I wanted to see if I should SRU the patch to those releases as
well?
** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu Xenial)
Status: Triaged => In Progress
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** Tags added: architecture-ppc64 bugnameltc-142479 severity-critical
targetmilestone-inin16041
** Attachment added: "kern.log"
https://bugs.launchpad.net/bugs/1581326/+attachment/4789079/+files/kern.log
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Hi Joseph,
This test kernel is also working for me.
I don't see kernel crash when creating 2 RAID volumes consecutively on a single
boot.
Thanks
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I compiled a test kernel for ppc66el. It is available from:
http://kernel.ubuntu.com/~jsalisbury/lp1581326/ppc64el
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Title:
Kernel crashed while
Hi Joseph,
I would like to test this patch this on IBM Power8 system
Can you build a test kernel for ppc64le?
Thanks
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Title:
Kernel crashed
Joseph,
Tested the above test kernel, issue is not observed.So the V2 patch has fixed
the issue.
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Title:
Kernel crashed while Creating a
I built a Xenial test kernel with the V2 patch. It can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1581326/
Can you test this kernel and see if it resolves this bug?
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I can build a test kernel with the V2 version of the patch.
Has there been any response from upstream on the patch? It doesn't look like
it landed in mainline as of yet.
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Changed in: linux (Ubuntu
Joseph/John,
The above mentioned
patches(https://marc.info/?l=linux-block=147731657127810=2 and
https://lkml.org/lkml/2016/10/25/326) are posted to upstream by us only.
So please consider V2 patch (https://lkml.org/lkml/2016/10/25/326) and
let us know.
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I see a V2 of the patch has been posted today:
https://lkml.org/lkml/2016/10/25/326
I'll build a test kernel and post it here when the finalized patch is
available.
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Hi John,
Root caused & identified the issue in the kernel, issue exits in the block
layer. Also posted a patch which fix this issue to the upstream community.
Here is the URL of the posted patch,
https://marc.info/?l=linux-block=147731657127810=2
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Has there been any update to identify where it broke and where it is
fixed? What was the change?
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Title:
Kernel crashed while Creating a second
To perform a reverse bisect, we need to identify the last bad kernel
version and the first good one. We know that 4.4.14 is bad and 4.6
final is good.
Can you next test the upstream 4.5. kernel? It can be downloaded from:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.5-wily/
If it is also
** Attachment added: "4.4.14- Kernel crash logs."
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1581326/+attachment/4695793/+files/Ubuntu16.04_4.4.14_kernel%20log.txt
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Joseph,
Issue still exists in the 4.4.14 kernel:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.14-xenial/
Please help us to identify the fix, attaching the logs og 4.4.14 kernel
crash.
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Chaitra,
That source is in the current mainline tree:
git://kernel.ubuntu.com/ubuntu/linux.git
or
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/
Can you test the latest 4.4 stable kernel once more:
Joseph,
Could you please share us the source for kernel-
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-yakkety/
As we reported earlier, issue was not happening with this kernel whereas
issue hits with upstream kernel-4.6.2 and hence we want to know the diff
of these two kernels.
**
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
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Title:
Kernel crashed while Creating a second RAID volume on Ubuntu 16.04 OS.
Hi Brad,
I had requested Joseph an information regarding which patch/commit of upstream
has fixed this issue??
So not sure what should be the status of BZ, it was "TRIAGED" earlier Since i
didn't find any option to set status as request_info.., moved status to
new..Hoping that i may get
** Changed in: linux (Ubuntu)
Status: Triaged => New
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Title:
Kernel crashed while Creating a second RAID volume on Ubuntu 16.04 OS.
To
Joseph,
Could you please let us know which patch/commit of upstream has fixed this
issue??
It will be helpful if we get this information at the earliest , as we are
providing out of box driver support for Ubuntu 16.04.
Thanks,
Chaitra
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** Changed in: linux (Ubuntu Xenial)
Status: Incomplete => Triaged
** Changed in: linux (Ubuntu)
Status: Confirmed => Triaged
** Tags added: needs-reverse-bisect
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Joseph,
Issue is observed with the latest upstream 4.4 kernel.
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Title:
Kernel crashed while Creating a second RAID volume on Ubuntu 16.04 OS.
That is good new that this is already fixed upstream. That means we can
perform a "Reverse" bisect to identify the commit that fixes this.
Can you first test the latest upstream 4.4 kernel to see if the fix was
also sent to -stable? It can be downloaded from:
Joseph,
Tested with latest upstream kernel :
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-yakkety/
issue not observed and hence looks like this bug is fixed in mainline kernel
'kernel-fixed-upstream'
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6
apport information
** Tags added: apport-collected xenial
** Description changed:
Booted into Ubuntu16.04(4.4.0-21-generic) OS with inbox driver-
v12.100.00.00,
Successfully discovered HBA and the devices connected to HBA.
>>Launched SAS3IRCU utility and created a RAID volume
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