** Tags added: kernel-daily-bug
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Title:
Hold IOPOLL locks when triggering io_uring's deferred work
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This bug is awaiting verification that the linux-iot/5.4.0-1046.49
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-focal-linux-iot' to 'verification-done-focal-
linux-iot'. If the prob
This bug was fixed in the package linux - 5.4.0-205.225
---
linux (5.4.0-205.225) focal; urgency=medium
* focal/linux: 5.4.0-205.225 -proposed tracker (LP: #2093621)
* Hold IOPOLL locks when triggering io_uring's deferred work (LP: #2078659) //
CVE-2023-21400
- io_uring:
Focal 5.4.0-206.226 was tested using the test plan and confirmed that it
is functioning as expected.
root@focal-iouring:~# uname -a
Linux focal-iouring 5.4.0-206-generic #226-Ubuntu SMP Mon Jan 13 07:29:08 UTC
2025 x86_64 x86_64 x86_64 GNU/Linux
** Tags removed: verification-needed-focal-linux
*
This bug is awaiting verification that the linux/5.4.0-205.225 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-focal-linux' to 'verification-done-focal-linux'. If
the problem still exi
** Description changed:
[Impact]
io_commit_cqring() writes the CQ ring tail to make it visible and also
triggers any deferred work.
When a ring is set up with IOPOLL, it doesn't require locking around the CQ
ring updates.
However, if there is deferred work that needs processing, io_queue
** Description changed:
[Impact]
io_commit_cqring() writes the CQ ring tail to make it visible and also
triggers any deferred work.
When a ring is set up with IOPOLL, it doesn't require locking around the CQ
ring updates.
However, if there is deferred work that needs processing, io_queue
** Changed in: linux (Ubuntu Focal)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/2078659
Title:
Hold IOPOLL locks when triggering io_uring's deferred work
To mana
** Description changed:
[Impact]
io_commit_cqring() writes the CQ ring tail to make it visible and also
triggers any deferred work.
When a ring is set up with IOPOLL, it doesn't require locking around the CQ
ring updates.
However, if there is deferred work that needs processing, io_queue
** Summary changed:
- io_uring: ensure IOPOLL locks around deferred work
+ Hold IOPOLL locks when triggering io_uring's deferred work
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Title:
Ho
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