Hello again,
You wrote on Thu, Aug 14, 2025 at 11:13:32PM +0200:
I'm seeing a reproducible kernel oops on my home router updating from 5.15.181 to 5.15.189: ..
It seems to be identical to: https://lore.kernel.org/stable/bcf9c70e9cf750363782816c21c69792f6c81cd9.1754...
While the kernel didn't oops anymore with the patch applied, the network traffic behaves erratic: TCP traffic works, ICMP seems "stuck". tcpdump showed no icmp traffic on the ppp device.
I didn't realize yesterday that the bandwidth management script uses both drr and hfsc.
There is an upcoming patch series proposed for the 5.15 stable queue:
1. "[PATCH 5.15, 5.10 2/6] sch_drr: make drr_qlen_notify() idempotent" https://lore.kernel.org/stable/bcf9c70e9cf750363782816c21c69792f6c81cd9.1754...
2. "[PATCH 5.15, 5.10 3/6] sch_hfsc: make hfsc_qlen_notify() idempotent" https://lore.kernel.org/stable/8f1d425178ad93064465e15c68b38890b10b5814.1754...
With those two patches applied, kernel 5.15.189 doesn't oops anymore. (if I drop the hfsc related patch, ICMP is broken as reported)
Thanks for all the hard work on the stable kernel series! It's highly appreciated.
Cheers, Thomas