On Mon, Nov 23, 2015 at 05:23:20AM -0800, David Wolfskill wrote: > This was the "smoke test" boot after building: > > FreeBSD 11.0-CURRENT FreeBSD 11.0-CURRENT #253 r291193M/291193:1100090: Mon > Nov 23 04:43:34 PST 2015 > r...@g1-252.catwhisker.org:/common/S4/obj/usr/src/sys/CANARY amd64 > > and (as noted), it happened fairly early in the boot sequence -- > before the file systems were mounted, but after the device probes. > > It also affected my build machine (same source revision) the same way. > > The most recent successful head built & booted on the machine was: > > FreeBSD g1-252.catwhisker.org 11.0-CURRENT FreeBSD 11.0-CURRENT #252 > r291159M/291159:1100090: Sun Nov 22 05:16:34 PST 2015 > root@localhost:/common/S4/obj/usr/src/sys/CANARY amd64 > > > I was able to capture a crash dump (by issuing "panic" at the "db> > " prompt); I've copied the vmcore.8 & core.txt.8 to > <http://www.catwhisker.org/~david/FreeBSD/head/>. Here's an excerpt from > the core.txt.8: > > ... > SMP: passed TSC synchronization test > TSC timecounter discards lower 1 bit(s) > Timecounter "TSC-low" frequency 1396804168 Hz quality 1000 > WARNING: WITNESS option enabled, expect reduced performance. > WARNING: DIAGNOSTIC option enabled, expect reduced performance. > Expensive timeout(9) function: 0xffffffff808830d0(0xffffffff81761898) > 0.004704835 s > battery0: battery initialization done, tried 1 times > GEOM: new disk cd0 > GEOM_PART: partition 1 on (diskid/DISK-W200TLZD, MBR) is not aligned on 4096 > bytes > GEOM_PART: partition 2 on (diskid/DISK-W200TLZD, MBR) is not aligned on 4096 > bytes > GEOM_PART: partition 3 on (diskid/DISK-W200TLZD, MBR) is not aligned on 4096 > bytes > start_init: trying /sbin/init > > > Fatal trap 9: general protection fault while in kernel mode > cpuid = 6; apic id = 06 > instruction pointer = 0x20:0xffffffff809b049e > stack pointer = 0x28:0xfffffe06015a2a70 > frame pointer = 0x28:0xfffffe06015a2ab0 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 1 (init) > Uptime: 3s > .... > > I'm happy to test possible fixes.
The source line which paniced is kern_fork.c:1025, according to the kgdb backtrace. The corresponding fragment is if (p->p_sysent->sv_schedtail != NULL) (p->p_sysent->sv_schedtail)(td); The revision 291171 changed layout of the dereferenced structure sysentvec. Was your kernel build clean, or did you used -DNO_CLEAN or similar option ? If yes, remove the kernel build directory and start from scratch. _______________________________________________ firstname.lastname@example.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"