On Sun, 27 Apr 2025 12:11:45 -0700 Cong Wang xiyou.wangcong@gmail.com wrote:
Hi
I just tried your reproducer in my VM since I don't have pppoe setup, after running ping flood (ping -f) bidirectionally for ~10 minutes, I still didn't get any warning or crash.
I also tried to reduce the bandwidth limit you set in your script to get traffic throttled, still no crash/warning.
Note, I just used the latest -net, without applying any extra patch.
That would be https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ ?
I've just cloned that. I'll do a build and a test.
I disabled the cron job that ran my ip-up.d script every 5 mins, but left it enabled to run when ppp came up.
I still had two panics today, I re-enabled netconsole after the first, the second crashed in htb_dequeue+0x42f/0x610 [sch_htb] as previously.
Kernel config attached.
Just confirming I'm running the right version:
$ git clone --reference=linux-mirror/ https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/ linux-net
$ head Makefile VERSION = 6 PATCHLEVEL = 15 SUBLEVEL = 0 EXTRAVERSION = -rc3
$ git show HEAD commit f73f05c6f711fd1628c7565441b9febc0c4d6c58 (HEAD -> main, origin/main, origin/HEAD) Merge: 68f9d8974b54 e54b4db35e20 Author: Jakub Kicinski kuba@kernel.org Date: Fri Apr 25 19:06:58 2025 -0700
Merge branch 'net-ethernet-mtk-star-emac-fix-several-issues-on-rx-tx-poll'
$ git log -p net/sched/
commit 6ccbda44e2cc3d26fd22af54c650d6d5d801addf Author: Cong Wang xiyou.wangcong@gmail.com Date: Thu Apr 17 11:47:31 2025 -0700
net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too