Hello, after upgrading my Laptop to FreeBSD 11.1 it had a problem when starting. From time to time i got a page fault and it restarts. Its not every time. Sometimes it reboots up to 5 times, sometimes there is just a single reboot. In /var/log/messages i found this error-log: Nov 15 18:36:46 kara kernel: cd0 at ahcich1 bus 0 scbus1 target 0 lun 0 Nov 15 18:36:46 kara kernel: kernel trap 12 with interrupts disabled Nov 15 18:36:46 kara kernel: Nov 15 18:36:46 kara kernel: Nov 15 18:36:46 kara kernel: Fatal trap 12: page fault while in kernel mode Nov 15 18:36:46 kara kernel: cpuid = 1; apic id = 01 Nov 15 18:36:46 kara kernel: fault virtual address = 0x1e8 Nov 15 18:36:46 kara kernel: fault code = supervisor read data, page not present Nov 15 18:36:46 kara kernel: instruction pointer = 0x20:0xffffffff808ea31e Nov 15 18:36:46 kara kernel: stack pointer = 0x28:0xfffffe00003c4f00 Nov 15 18:36:46 kara kernel: frame pointer = 0x28:0xfffffe00003c4f70 Nov 15 18:36:46 kara kernel: code segment = base rx0, limit 0xfffff, type 0x1b Nov 15 18:36:46 kara kernel: = DPL 0, pres 1, long 1, def32 0, gran 1 Nov 15 18:36:46 kara kernel: processor eflags = resume, IOPL = 0 Nov 15 18:36:46 kara kernel: current process = 12 (irq263: ahci0:ch1) Nov 15 18:36:46 kara kernel: trap number = 12 Nov 15 18:36:46 kara kernel: panic: page fault Nov 15 18:36:46 kara kernel: cpuid = 1 Nov 15 18:36:46 kara kernel: KDB: stack backtrace: Nov 15 18:36:46 kara kernel: #0 0xffffffff80aada97 at kdb_backtrace+0x67 Nov 15 18:36:46 kara kernel: #1 0xffffffff80a6bb76 at vpanic+0x186 Nov 15 18:36:46 kara kernel: #2 0xffffffff80a6b9e3 at panic+0x43 Nov 15 18:36:46 kara kernel: #3 0xffffffff80edf832 at trap_fatal+0x322 Nov 15 18:36:46 kara kernel: #4 0xffffffff80edf889 at trap_pfault+0x49 Nov 15 18:36:46 kara kernel: #5 0xffffffff80edf0c6 at trap+0x286 Nov 15 18:36:46 kara kernel: #6 0xffffffff80ec3641 at calltrap+0x8 Nov 15 18:36:46 kara kernel: #7 0xffffffff808f26d8 at vt_flush+0x398 Nov 15 18:36:46 kara kernel: #8 0xffffffff80ac09cf at termcn_cnputc+0xff Nov 15 18:36:46 kara kernel: #9 0xffffffff80a100ed at cnputc+0x7d Nov 15 18:36:46 kara kernel: #10 0xffffffff80a103f8 at cnputs+0xb8 Nov 15 18:36:46 kara kernel: #11 0xffffffff80ab36ad at putchar+0x14d Nov 15 18:36:46 kara kernel: #12 0xffffffff80ab323d at kvprintf+0x103d Nov 15 18:36:46 kara kernel: #13 0xffffffff80ab3ea7 at vprintf+0x87 Nov 15 18:36:46 kara kernel: #14 0xffffffff80ab3e13 at printf+0x43 Nov 15 18:36:46 kara kernel: #15 0xffffffff80307c52 at xpt_announce_periph+0x62 Nov 15 18:36:46 kara kernel: #16 0xffffffff8032e089 at cddone+0x249 Nov 15 18:36:46 kara kernel: #17 0xffffffff8030dbe7 at xpt_done_process+0x677 Nov 15 18:36:46 kara kernel: Uptime: 1s I'm not familiar with such errors or how to solve them. If you need any more information i'm glad to help! Greetings, Torsten
What version were you running before the upgrade (that was presumably stable for you)?
It was a FreeBSD 11.0. 11.0 was a fresh installation so no artifacts or what so ever should have occurred.
It may be resolved by adding the kern.cam.scsi_delay option. Please see bug #220923, comment #17.
(In reply to Toshimichi Masubuchi from comment #3) > It may be resolved by adding the kern.cam.scsi_delay option. > Please see bug #220923, comment #17. I tested the option with various values, but nothing change. The Laptop still restarts from time to time.
I did not experience this issue for more than 2 or 3 months. Maybe a minor patch update has fixed it. Maybe something other. I really have no idea. Therefore i'm closing the issue, since it is no longer reproducible.