[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
tldr; double-check the syntax of your apparmor profiles / subprofiles.
I could reproduce with apparmor 3.1.7-1 on 6.8.0-40-generic with a
simple profile transition and could pintpoint the underlying reason:
```
/usr/local/bin/MyProg flags=(complain) {
/usr/bin/fusermount3 Cx,
profile /usr/bin/fusermount3 flags=(complain) {
}
}
```
=> Although it sounds like an historically valid configuration, this
results in a kernel OOPS
```
/usr/local/bin/MyProg flags=(complain) {
/usr/bin/fusermount3 Cx -> fusermount3,
profile fusermount3 flags=(complain) {
}
}
```
=> No OOPS
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https://bugs.launchpad.net/bugs/2048951
Title:
Kernel Oops - kernel NULL pointer dereference
(apparmor_bprm_creds_for_exec, profile_transition) with linux-
image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
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[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
Here on 6.8.0-40-generic My guess is that structure representing mount options changed in Apparmor resulting in a mismatch between the user/kernel side. I've an AppImage, generated with genprof but after a couple of `aa- logprof` runs, it stopped working (while still in complain mode!)... because this line triggered a OOPS very similar (if not identical) to the above (attached) > apparmor="ALLOWED" operation="mount" class="mount" info="failed mntpnt match" error=-13 profile="/usr/local/bin/foobar" name="/tmp/.mount_foobarfDWxdu/" pid=147850 comm="foobar" fstype="fuse.foobar" srcname="foobar" flags="ro, nosuid, nodev" I couldn't isolate the actual profile change triggering this but it's likely related to fuse/custom fstype/mount options within one of the profiles. Some of the rules (related to fusermount3, which may deserve a check): ``` capability dac_read_search, /dev/fuse rw, /etc/fuse.conf r, /proc/*/mounts r, /usr/bin/fusermount3 mr, owner /etc/nsswitch.conf r, owner /etc/passwd r, ``` ** Attachment added: "oops on an AppImage" https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+attachment/5814102/+files/oops.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048951 Title: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux- image-6.5.0-18-generic (linux-image-generic-hwe-22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
Still reproducible on 6.8.0-40-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048951 Title: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux- image-6.5.0-18-generic (linux-image-generic-hwe-22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
Still reproducible with 6.5.0-41-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048951 Title: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux- image-6.5.0-18-generic (linux-image-generic-hwe-22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
Same Problem here. I'm using 6.5.0-25-generic. Heres what i get by `dmesg -T`. ** Attachment added: "dmesg-2024-04-17.log" https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+attachment/5766711/+files/dmesg-2024-04-17.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048951 Title: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux- image-6.5.0-18-generic (linux-image-generic-hwe-22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: linux-hwe-6.5 (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048951 Title: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux- image-6.5.0-18-generic (linux-image-generic-hwe-22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
Still reproducible with 6.5.0-26-generic kdump won't generate any dump or send anything over ssh. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048951 Title: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux- image-6.5.0-18-generic (linux-image-generic-hwe-22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2048951] Re: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux-image-6.5.0-18-generic (linux-image-generic-hwe-22.04)
Still reproducible with 6.5.0-25-generic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2048951 Title: Kernel Oops - kernel NULL pointer dereference (apparmor_bprm_creds_for_exec, profile_transition) with linux- image-6.5.0-18-generic (linux-image-generic-hwe-22.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.5/+bug/2048951/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
