** Changed in: linux-bluefield (Ubuntu Focal)
Status: In Progress => Fix Committed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-bluefield in Ubuntu.
https://bugs.launchpad.net/bugs/1946219
Title:
liburing stops working after upgrading to 5.4.0-1012
Status in HWE Next:
New
Status in linux-bluefield package in Ubuntu:
In Progress
Status in linux-bluefield source package in Focal:
Fix Committed
Bug description:
== Impact ==
After configuration multipath with io uring virtio_blk module is stuck
== Fix ==
The issue was introduced by one of the stable updates merged in the base
kernel Ubuntu-5.4.0-74.83. After reverting the commit the issue can not be
reproduced any more.
commit d6757b3e34831b7615edd3268b878536761f8b2e
Author: Pavel Begunkov <asml.sile...@gmail.com>
Date: Fri Nov 20 17:10:28 2020 +0000
block: don't ignore REQ_NOWAIT for direct IO
BugLink: https://bugs.launchpad.net/bugs/1926490
[ Upstream commit f8b78caf21d5bc3fcfc40c18898f9d52ed1451a5 ]
If IOCB_NOWAIT is set on submission, then that needs to get propagated to
REQ_NOWAIT on the block side. Otherwise we completely lose this
information, and any issuer of IOCB_NOWAIT IO will potentially end up
blocking on eg request allocation on the storage side.
Signed-off-by: Pavel Begunkov <asml.sile...@gmail.com>
Signed-off-by: Jens Axboe <ax...@kernel.dk>
Signed-off-by: Sasha Levin <sas...@kernel.org>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
Signed-off-by: Stefan Bader <stefan.ba...@canonical.com>
== Risk of Regression ==
Medium. The commit has a good reason to be part of the stable updates.
However the kernel passes Cert and Nvidia tests without the commit so reverting
the commit should be an acceptable approach for now.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1946219/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
