On Tue, Nov 06, 2018 at 10:50:06AM +0100, Sylvain GALLIANO wrote: > Hi, > > I got random panic on Current & 11.2-STABLE on kern_event.c > > Panic occur in syslog-ng (logging at high rate) with the folloging lines: > > Panic String: Bad tailq NEXT(0xfffff80039ae7a38->tqh_last) != NULL > Panic String: Bad tailq head 0xfffff80039f1a238 first->prev != head > > It's look like knote_enqueue try to add and existings knote on TAILQ > (confirmed by following patch). > > logs after apply patch: > XXX knote 0xfffff8012e3d33c0 already in tailq status:1 kq_count:1 [0 > 0xfffff800327d3538] 2671 > XXX knote 0xfffff80032861780 already in tailq status:1 kq_count:1 [0 > 0xfffff80032457938] 2671
Can you grab the stack when this happens as well, with kdb_backtrace()? Or better, convert the print into a panic so that we can examine the kernel dump. _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
