On Mon, Jan 15, 2024 at 01:42:55PM -0300, K R wrote: > >Synopsis: kernel panic: ip_output no HDR > >Category: kernel amd64 > >Environment: > System : OpenBSD 7.4 > Details : OpenBSD 7.4-stable (GENERIC.MP) #0: Mon Dec 11 > 19:17:55 UTC 2023 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP > > Architecture: OpenBSD.amd64 > Machine : amd64 > >Description: > > ... > pppoe0: received unexpected PADO > panic: ip_output no HDR > Starting stack trace... > panic() at panic+0x130 > ip_output() at ip_output+0x126 > udp_output() at 0x3be > sosend() at sosend+0x37f > pflow_output_process() at pflow_output_process+0x67 > taskq_thread() at taskq_thread+0x100 > end trace frame: 0x0, count: 251 > End of stack frame. > > Trace lines attached below. > > >How-To-Repeat: > > The machine export pflows to localhost: those are read by nfcapd, part > of nfdump, from packages. This was a very stable setup -- the kernel > panic started after upgrading to 7.4. > > This machine runs 7.4-stable. Same panic was also observed on another > machine, running 7.4-release + all syspatches, also using pflow.
There were some commits to if_pflow.c in current. mvs@ has fixed a bunch of races. Would it be possible for you to install a -current snapshot on the machine and test if the problem persists? bluhm
