Matthieu Baerts

I didn't manage to reproduce this warning from `mptcp_try_coalesce`, but I got a hit without MPTCP on top of fb372b19dfe9eff0c9989337c023942b6ea78f3b (`export/20250714T165402`): ``` ------------[ cut here ]------------ WARNING: CPU: 0 PID:...

> I will keep monitoring the ones with MPTCP. Finally, I got one hit, still on top of fb372b19dfe9eff0c9989337c023942b6ea78f3b (`export/20250714T165402`): ``` audit: type=1400 audit(1753895621.330:51): avc: denied { ingress } for...

FYI, with a slightly different call trace, on top of 9a3f9440d3f1ba4d323e6dc3f503e453b15a4edc: ``` veth0_macvtap: entered allmulticast mode Invalid logical block size (3056) SELinux: unrecognized netlink message: protocol=4 nlmsg_type=19 sclass=netlink_tcpdiag_socket pid=3941 comm=syz.6.441...

FYI, it is still happening, but now mostly with only MPTCP, on top of `export/20251205T155419` with no reproducers, e.g. ``` Buffer I/O error on dev sr0, logical block 110, async...

It looks like it happened again recently: * https://github.com/multipath-tcp/mptcp_net-next/actions/runs/17604568587 * https://github.com/multipath-tcp/mptcp_net-next/actions/runs/17586663636 * https://github.com/multipath-tcp/mptcp_net-next/actions/runs/17608702434 @cpaasch : how did you reproduce it on your side?

> Turned out that when I hit it, it was a different leak. Thank you for your reply! Do you mean you had the same calltrace? Or you had an...

Note: this issue still happens from time to time, e.g. https://github.com/multipath-tcp/mptcp_net-next/actions/runs/19303104996/job/55202821360 If someone has an idea how to reproduce this, or help with the debug, do not hesitate to share...

FYI, my syzkaller instances can also reproduce the issue, e.g. on top of `export/20251205T155419`: ``` BUG: memory leak unreferenced object 0xffff8880396c3000 (size 2928): comm "softirq", pid 0, jiffies 4295153189 hex...

Hu @geliangtang That's great, thank you! I don't know if you noticed the doc about Syzkaller in our [wiki](https://github.com/multipath-tcp/mptcp_net-next/wiki/Testing#syzkaller). The wiki is focused on how to setup syzkaller to find...

Hi @Dwyane-Yan, Thank you for your question. (But no need to target it only to me, other people can answer too :) ) > ``` > MPTCP: msk:00000000e55b09db, msk->sndbuf:20480, msk->first->sndbuf:2626560....