Ubuntu 22.04, 5.15.0-156-generic Title should be renamed. This bug seems to be a 5.15.0-156-generic bug.
around ~30 servers running ubuntu 22.04, with unattended (and automatic reboot set at specific times and in specific order, after health checks have been run) upgraded to this kernel, and they all displayed similar behaviour causing disruption in prod - a process normally that would be stopped if a server fails the health check, but servers were running good _enough_ to finally allow the rest of the servers to be upgraded before they started displaying symptoms of this bug. 100% non-responsive, full cpu usage, no/little memory usage. Not able to do ctrl+alt+delete, need to power cycle the machine to get it back up and running. Issue also seems to occur when running apt-get for some unknown reasons. No other kernels behaves similarly. Attchment is from a powercycle between two apt-get updates. The only logs available: [ 1941.675652] [drm:drm_crtc_commit_wait [drm]] *ERROR* flip_done timed out [ 1941.676241] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [PLANE:34:plan e-0] commit wait timed out [ 1951.915262] [drm:drm_crtc_commit_wait [drm]] *ERROR* flip_done timed out [ 1951.916007] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:38:crtc- 0] commit wait timed out [ 1960.237813] watchdog: BUG: soft lockup - CPU#1 stuck for 1810s! [kauditd:39] [ 1962.154872] [drm:drm_crtc_commit_wait [drm]] *ERROR* flip_done timed out [ 1962.155551] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [PLANE:34:plan e-0] commit wait timed out [ 1972.394494] [drm:drm_crtc_commit_wait [drm]] *ERROR* flip_done timed out [ 1972.394961] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:38:crtc- 0] commit wait timed out [ 1982.634106] [drm:drm_crtc_commit_wait [drm]] *ERROR* flip_done timed out [ 1982.634612] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [PLANE:34:plan e-0] commit wait timed out [ 1988.236753] watchdog: BUG: soft lockup - CPU#1 stuck for 1836s! [kauditd:39] ** Attachment added: "Tue_Sep_30_10:20:38_AM_CEST_2025.png" https://bugs.launchpad.net/ubuntu/+bug/2125707/+attachment/5913260/+files/Tue_Sep_30_10%3A20%3A38_AM_CEST_2025.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2125707 Title: Upgrade to 5.15.0-151.161 crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2125707/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
