This bug was fixed in the package linux - 5.19.0-15.15
---
linux (5.19.0-15.15) kinetic; urgency=medium
* kinetic/linux: 5.19.0-15.15 -proposed tracker (LP: #1983335)
* Miscellaneous Ubuntu changes
- [Config] update annotations to support both gcc-11 and gcc-12
-- Andrea
Thanks to Stefan Bader, Andrea Righi and Kleber Souza. Looks like
patches were applied to all supported and affected kernels.
https://lists.ubuntu.com/archives/kernel-team/2022-August/132662.html
https://lists.ubuntu.com/archives/kernel-team/2022-August/132688.html
Verified the patch for the master-next branch. It fixes the issue
indeed, everything is OK.
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https://bugs.launchpad.net/bugs/1967924
Title:
re-apply missing overlayfs
** Description changed:
[Impact]
Starting with 5.13 we've incorrectly dropped the following sauce patch:
- UBUNTU: SAUCE: overlayfs: fix incorrect mnt_id of files opened from
+ UBUNTU: SAUCE: overlayfs: fix incorrect mnt_id of files opened from
map_files
This patch seems
It was discovered that we also have problems with
Focal/hwe-5.13/hwe-5.15 and Kinetic/master kernels too. Patches were
sent.
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https://bugs.launchpad.net/bugs/1967924
Title:
** Tags added: patch
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https://bugs.launchpad.net/bugs/1967924
Title:
re-apply missing overlayfs SAUCE patch
Status in linux package in Ubuntu:
In Progress
Status in
** Tags removed: verification-needed-jammy
** Tags added: verification-failed-jammy
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https://bugs.launchpad.net/bugs/1967924
Title:
re-apply missing overlayfs SAUCE patch
I've changed state because technically, issue still persists on the Ubuntu
Jammy in default kernel configurations. I've prepared fixes for two kernels:
- master-next
- hwe-5.17
I'm not sure if I need to port these changes to some other branches. I
think I need some advice from ubuntu kernel team
fix for Jammy linux kernel 5.15 master-next branch was sent to kernel-
t...@lists.ubuntu.com
** Patch added:
"0001-UBUNTU-SAUCE-overlayfs-remove-CONFIG_AUFS_FS-depende.patch"
Fix for Jammy linux master branch (linux kernel 5.15) will be ready
tomorrow.
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Title:
re-apply missing overlayfs SAUCE patch
Fix for Jammy hwe-5.17 was sent to kernel-t...@lists.ubuntu.com
** Attachment added: "Jammy hwe-5.17"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1967924/+attachment/5606318/+files/jammy-hwe-5.17.tar.gz
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cat /boot/config-$(uname -r) | grep AUFS
# CONFIG_AUFS_FS is not set
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https://bugs.launchpad.net/bugs/1967924
Title:
re-apply missing overlayfs SAUCE patch
Status in
Ugh, it looks like CONFIG_AUFS_FS is disabled in all branches of jammy
kernel. It means that this fix commit is totally useless. Okay, I'll fix
that too :)
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Dmitry, couldn't you show:
cat /boot/config-$(uname -r) | grep AUFS
?
5.15 kernel it's master branch, this branch contains corresponding fix:
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/jammy/tree/fs/overlayfs/file.c?h=master#n493
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Using CRIU on Ubuntu 22.04 gives me the error:
Error (criu/files-reg.c:1710): Can't lookup mount=1273 for fd=-3
path=/opt/python/bin/python3.8
Error (criu/cr-dump.c:1524): Collect mappings (pid: 70655) failed with -1
Error (criu/cr-dump.c:2053): Dumping FAILED.
cat /etc/lsb-release
As far as I understand hwe kernels on Jammy lacks aufs, so our fix for
shiftfs+overlayfs was dropped on these kernels. I'll work on the proper
fixes for these kernels and send it.
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This bug was fixed in the package linux - 5.15.0-35.36
---
linux (5.15.0-35.36) jammy; urgency=medium
* CVE-2022-21499
- SAUCE: debug: Lock down kgdb
linux (5.15.0-34.35) jammy; urgency=medium
* jammy/linux: 5.15.0-34.35 -proposed tracker (LP: #1974322)
* AMD APU s2idle
This bug was fixed in the package linux - 5.13.0-46.51
---
linux (5.13.0-46.51) impish; urgency=medium
* CVE-2022-21499
- SAUCE: debug: Lock down kgdb
linux (5.13.0-45.50) impish; urgency=medium
* impish/linux: 5.13.0-45.50 -proposed tracker (LP: #1974347)
*
This bug is awaiting verification that the linux-
hwe-5.15/5.15.0-32.33~20.04.1 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' to
'verification-done-focal'. If the problem
This bug is awaiting verification that the linux/5.13.0-42.47 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-impish' to 'verification-done-impish'. If the
problem still exists,
Alex, thanks for the review! We can definitely remove the dependency of
AUFS and provide a standalone patch, in this way we can provide this
feature also to those kernels that don't have AUFS enabled (like all the
recent kernels in jammy). I'll work on that and will ping you when I
have a patch
Hi Andrea,
thanks a lot!
1. In my original patch here:
https://patchwork.ozlabs.org/project/ubuntu-kernel/patch/20210426081121.37363-1-alexan...@mihalicyn.com/
there was no "fput" call inside ovl_vm_prfile_set helper. fput was in
the outer ovl_mmap() function in fs/overlayfs/file.c
You last
Everything looks good, so I re-applied the patch with the addition of
this extra fix:
https://git.launchpad.net/~ubuntu-
kernel/ubuntu/+source/linux/+git/focal/commit/?h=hwe-5.15-next=b4c25dba7993400e9c57d3e60bec4ab8bce1b701
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I think I have a proper fix to re-introduce this patch without panicing
the kernel. I'm currently running some stress tests to make sure nothing
is broken. If everything goes well I'll re-introduce this patch with the
proper fix.
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@mihalicyn Yes, this patch without AUFS enabled doesn't introduce any
problem, but that's because without AUFS the patch is basically a no-op.
Here's the ported patch that was applied to 5.15:
Hi Andrea,
Do I understand you correctly, that this patch without AUFS works fine,
but on kernels with AUFS enabled it triggers the issue described above?
Please, feel free to ping me if you need help with reworking that.
Thanks a lot for your attention to this problem!
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NOTE to clarify: I'm going to revert this patch in focal/hwe-5.15, that
is the only 5.15 kernel with this patch that has AUFS enabled (so the
only kernel where this bug can be triggered).
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This patch seems to introduce this NULL pointer dereference, that can be
triggered systematically running lxc autopkgtest:
BUG: kernel NULL pointer dereference, address: 0008
[ 447.039738] #PF: supervisor read access in kernel mode
[ 447.040369] #PF: error_code(0x) - not-present
** Changed in: linux (Ubuntu Impish)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1967924
Title:
re-apply missing overlayfs SAUCE patch
This bug is awaiting verification that the linux/5.15.0-28.29 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-jammy' to 'verification-done-jammy'. If the problem
still exists, change
** Changed in: linux (Ubuntu Impish)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Impish)
Status: New => In Progress
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