Hi Salvatore, You can mark this bug as a duplicate of #1111017 (linux 6.1.147 hangs when loading audit rules / booting).
I tested the following and that temporarily fixed the issue: sudo systemctl stop auditd sudo apt install linux-image-6.1.0-36-cloud-amd64 Without stopping auditd first, the second command hangs the system with a 100% certainty. PS: do you have an indication for when 6.1.148 will be released? -- Mvg, Sander Devrieze. Op zo 17 aug 2025 om 13:20 schreef Salvatore Bonaccorso <[email protected]>: > Control: tags -1 + moreinfo > > Hi > > On Sun, Aug 17, 2025 at 11:36:05AM +0200, sander wrote: > > Package: src:linux > > Version: 6.1.147-1 > > Severity: important > > X-Debbugs-Cc: [email protected] > > > > Dear Maintainer, > > > > * What led up to the situation? > > > > Executing 'composer update' to update a website's software stack or > installing a new package with apt, make the system crash with latest kernel > version. > > > > * What exactly did you do (or not do) that was effective (or > > ineffective)? > > > > Rebooting and running the previous kernel version. > > > > * What was the outcome of this action? > > > > rcu: INFO: rcu-preempt detected stalls on CPUs/tasks: > > rcu: All QSes seen, last rcu_preempt kthread activity 5252 > (4294928323-4294923071), jiffies_till_next_fqs=1, root ->qsmask 0x0 > > rcu: rcu_preempt kthread starved for 5252 jiffies! g41193 f0x2 > RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 > > rcu: #Unless rcu_preempt kthread gets sufficient CPU time, OOM is now > expected behavior. > > rcu: RCU grace-period kthread stack dump: > > rcu: Stack dump where RCU GP kthread last ran: > > > > * What outcome did you expect instead? > > Can you capture a full kernel log when this happens and provide it > here? > > Do you have some easy reproducing steps for it? In case yes would you > be able to do some bisection to find the offending commit between > 6.1.140 and 6.1.147? > > If you can test on that infrastrcture: Does the version in trixie > (6.12.41-1) or experimental (6.16.1-1~exp1) exhibit the problem as > well? > > Most ideal is if we have an simple reproducer so that bisection can be > performed and isolate the problem. > > Regards, > Salvatore >

