** Changed in: linux (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1807393
Title:
nvme - Polling on timeout
Status in linux package
** Tags added: cscc
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Title:
nvme - Polling on timeout
Status in linux package in Ubuntu:
In Progress
Status in linux source packa
This bug was fixed in the package linux - 4.4.0-142.168
---
linux (4.4.0-142.168) xenial; urgency=medium
* linux: 4.4.0-142.168 -proposed tracker (LP: #1811846)
* Packaging resync (LP: #1786013)
- [Packaging] update helper scripts
* iptables connlimit allows more connectio
Also verified that in an AWS instance running the aws kernel in
-proposed:
$ uname -rv
4.4.0-1075-aws #85-Ubuntu SMP Thu Jan 17 17:15:12 UTC 2019
$ dmesg #cleared that before testing
[ 5429.330967] nvme :00:04.0: I/O 10 QID 1 timeout, completion polled
[39630.417191] nvme :00:04.0: I/O
The bug was verified in Xenial kernel 4.4.0-142.168 available in
-proposed.
I'm running in an AWS 2-cpu instance, which exhibits the issue if we run
a small reproducer script (a loop that basically changes IRQ affinity
for the NVMe MSIs/legacy interrupt among the CPUs and performs a 4K
write to th
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verifica
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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Title:
nvme - Polling on timeout
Status in linux
Patch sent to Ubuntu kernel mailing-list:
https://lists.ubuntu.com/archives/kernel-team/2018-December/097208.html
** Changed in: linux (Ubuntu)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu Xenial)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu Xenial
** Description changed:
- Description to be updated
+ [Impact]
+ * NVMe controllers potentially could miss to send an interrupt, specially
+ due to bugs in virtual devices(which are common those days - qemu has its
+ own NVMe virtual device, so does AWS). This would be a difficult to
+ debug situa
** Changed in: linux (Ubuntu Xenial)
Status: New => Confirmed
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Guilherme G. Piccoli (gpiccoli)
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http
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
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Title:
nvme - Polling on timeout
Status in linu
** Patch added: "TEST patch for qemu nvme virtual device"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1807393/+attachment/5220068/+files/0001-hw-block-nvme-NVMe-hack-to-forcibly-miss-an-interrup.patch
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