Hi, I guess I hit the same issue on a production box. At first I thought it may be related to faulty memory, but the description fits my issue. Same (minimal) trace. I encountered it first after applying the latest syspatch (just the last one, fixing a iseemingly unrelated check for drm). The box encoutered the issue twice yesterday and after reverting the patch it seems to be stable again. It's also related to iked/ikev2, as I seem to be able to trigger it relatively reliable by restarting iked. Since it's a VPN Gateway and I am doing home office today I don't want to trigger it now, but I should be able to reapply the syspatch and test it tomorrow.
Why the drm related syspatch seems to be related doesn't make much sense to me, though... - Hinnerk On Mon, Apr 20, 2020 at 08:21:27AM +0200, Otto Moerbeek wrote: > On Mon, Apr 20, 2020 at 08:03:23AM +0200, Thomas de Grivel wrote: > > > Thanks Otto, > > > > Now I still don't know what could cause the double fault, I see no > > interrupt related code in rtable_l2. What am I missing ? I would like > > to investigate more but I'm not really a kernel developer. > > Traps are used for more things than interrupts. > > > > > The wikipedia page says it has to be a kernel bug, as in not from > > userland. It also says it would probably not happen on SPARC64. X86 > > has some flawed designs at its core > > > > I have a small diff for >2GB ext2fs partitions though I don't see how > > it could be related ? > > First retest with a kervel without diffs. > > If you collect more information you can file a bug report, see > http://www.openbsd.org/report.html > > -Otto > > > > > > Le dim. 19 avr. 2020 à 17:30, Otto Moerbeek <[email protected]> a écrit : > > > > > > On Sun, Apr 19, 2020 at 10:26:20AM +0200, Thomas de Grivel wrote: > > > > > > > Hello, > > > > > > > > I got this error last night on an OpenBSD 6.6-stable amd64 on which I > > > > recently enabled IKEv2 : > > > > > > > > > kernel: double fault trap, code=0 > > > > > Stopped at rtable_l2+0x27: callq srp_enter+0x4 > > > > > > > > I'm a bit puzzled by the "double fault trap" part of the message, what > > > > does it mean ? > > > > > > > > The relevant sources seem to be /sys/net/rtable.c and > > > > /sys/kern/kern_srp.c though I don't really grok what I'm looking at > > > > there either. > > > > > > > > -- > > > > Thomas de Grivel > > > > kmx.io > > > > > > > > > > Googling is not that hard: https://en.wikipedia.org/wiki/Double_fault > > > > > > -Otto > > > > > > > > -- > > Thomas de Grivel > > kmx.io >
