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From: Tejun Heo <tj@kernel.org>
To: Martin Pitt <martin@piware.de>
Cc: regressions@lists.linux.dev, cgroups@vger.kernel.org,
	lizefan.x@bytedance.com, hannes@cmpxchg.org
Subject: Re: [REGRESSION] 6.9.11: systemd hangs in cgroup_drain_dying during cleanup after podman operations
Date: Wed, 29 Apr 2026 06:21:51 -1000	[thread overview]
Message-ID: <f19d08689301f9cc0211e6273f833246@kernel.org> (raw)
In-Reply-To: <afHNg2VX2jy9bW7y@piware.de>

Hello,

Thanks for the report. The dmesg you attached has only a partial sysrq-t
- the dying-task stacks I need were pushed out of the ring buffer. Could
you increase log_buf_len, reproduce, trigger sysrq-t, and send the
resulting dmesg?

Thanks.
--
tejun

  reply	other threads:[~2026-04-29 16:21 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-29  9:21 [REGRESSION] 6.9.11: systemd hangs in cgroup_drain_dying during cleanup after podman operations Martin Pitt
2026-04-29 16:21 ` Tejun Heo [this message]
2026-04-29 21:15   ` Tejun Heo
2026-04-30  6:15   ` Martin Pitt
2026-05-01  2:29 ` [PATCH] cgroup: Defer css percpu_ref kill on rmdir until cgroup is depopulated Tejun Heo
2026-05-03 19:30   ` kernel test robot
2026-05-03 20:15   ` kernel test robot
2026-05-03 22:45   ` kernel test robot

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