On 2025-04-21 11:40, Alan J. Wylie wrote:
#regzbot introduced: 6.14.2..6.14.3
Since 6.14.3 I have been seeing random panics, all in htb_dequeue. 6.14.2 was fine.
6.14.3 contains: "codel: remove sch->q.qlen check before qdisc_tree_reduce_backlog()" aka https://web.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/...
Is your HTB backed by fq_codel by any chance? If so, try either reverting the above or adding: "sch_htb: make htb_qlen_notify() idempotent" aka https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commi...
which was successfully not added to 6.14.3, along with the rest of the series: https://lore.kernel.org/all/20250403211033.166059-2-xiyou.wangcong@gmail.com...
Hope this helps. I am running fq_codel without issue but not behind htb.
cheers Holger