This bug was fixed in the package linux - 5.11.0-41.45
---
linux (5.11.0-41.45) hirsute; urgency=medium
* hirsute/linux: 5.11.0-41.45 -proposed tracker (LP: #1949801)
* Packaging resync (LP: #1786013)
- [Packaging] update Ubuntu.md
- debian/dkms-versions -- update from ke
This bug was fixed in the package linux - 5.4.0-91.102
---
linux (5.4.0-91.102) focal; urgency=medium
* focal/linux: 5.4.0-91.102 -proposed tracker (LP: #1949840)
* Packaging resync (LP: #1786013)
- [Packaging] update Ubuntu.md
- debian/dkms-versions -- update from kernel
This bug was fixed in the package linux - 4.15.0-163.171
---
linux (4.15.0-163.171) bionic; urgency=medium
* bionic/linux: 4.15.0-163.171 -proposed tracker (LP: #1949874)
* Packaging resync (LP: #1786013)
- [Packaging] update Ubuntu.md
- debian/dkms-versions -- update fro
Verified bionic, focal, and hirsute (hwe kernel in focal) with steps in
comment #1.
The kernel packages in -updates hit the issue.
The kernel packages in -proposed don't hit it.
ubuntu@mfo-aufs-bionic:~/aufs$ uname -rv
4.15.0-163-generic #171-Ubuntu SMP Fri Nov 5 11:55:11 UTC 2021
ubuntu@mfo-auf
This bug is awaiting verification that the linux/5.11.0-41.45 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-hirsute' to 'verification-done-hirsute'. If the
problem still exists, chan
This bug is awaiting verification that the linux/4.15.0-163.171 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-bionic' to 'verification-done-bionic'. If the
problem still exists, chan
This bug is awaiting verification that the linux/5.4.0-91.102 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
still exists, change t
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Focal)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Hirsute)
Status: In Progress => Fix Committed
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[H/F/B][PATCH 0/1] aufs: fix kernel bug with apparmor and fuseblk
https://lists.ubuntu.com/archives/kernel-team/2021-October/125163.html
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https://bugs.launchpad.net/bugs/19484
Test with bionic-proposed (4.15.0-162.170)
---
Original:
# ../openat
Killed
[ 442.526300] BUG: unable to handle kernel NULL pointer dereference at
0010
...
[ 442.539854] CPU: 1 PID: 5644 Comm: openat Not tainted 4.15.0-162-generic
#170-Ubuntu
[ 442.540733] Hardware name: QEMU St
Hirsute doesn't ship aufs anymore; no testing needed, just patching.
commit 4fb9ce7538c89f81e3fa5bfae881c9b49e7137e0
Author: Seth Forshee
Date: Fri Feb 19 14:46:24 2021 -0600
UBUNTU: [Config] CONFIG_AUFS_FS=n
We're keeping aufs in the source tree for backports but disabling
it sta
Test with focal-proposed (5.4.0-90.101)
---
Original:
# ../openat
Killed
[ 286.989830] BUG: kernel NULL pointer dereference, address: 0010
...
[ 286.996507] CPU: 2 PID: 5529 Comm: openat Not tainted 5.4.0-90-generic
#101-Ubuntu
[ 286.997358] Hardware name: QEMU Standard PC (i440F
** Description changed:
[Impact]
* AppArmor-enabled applications on the aufs filesystem
might hit a kernel bug when getting file attributes.
* The aufs filesystem explicitly assigns a NULL pointer
to `struct path.mnt` for `vfs_getattr()`, which calls
into AppArmor that
Steps to Reproduce:
1) test app
# cat openat.c
#include
#include
int main() {
int rc;
rc = openat(AT_FDCWD, "test", O_RDWR | O_CREAT | S_IRWXU);
if (rc < 0) {
perror("openat");
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