kern/145040: PANIC_REBOOT_WAIT_TIME not honored

Michael Reynolds michael.reynolds at
Thu Mar 25 19:10:02 UTC 2010

>Number:         145040
>Category:       kern
>Synopsis:       PANIC_REBOOT_WAIT_TIME not honored
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Mar 25 19:10:01 UTC 2010
>Originator:     Michael Reynolds
>Release:        8.0-STABLE
FreeBSD localhost.localdomain 8.0-STABLE FreeBSD 8.0-STABLE #4: Tue Mar 23 20:07:11 EDT 2010     root at localhost.localdomain:/usr/obj/usr/src/sys/IDS  amd64
This is actually a multipart problem. When MAC is enabled, and running accton, the kernel panics. That's the first part. The second part is that the core dump to dumpdev fails. The third part is that with dumping disabled, even when PANIC_REBOOT_WAIT_TIME is enabled and set to 10, it does not automatically reboot. Filing this first, so as to unravel the onion.

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0x18
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80837844
stack pointer           = 0x28:0xffffff80ec0909f0
frame pointer           = 0x28:0xffffff80ec090a20
code segment            = base 0x0, limit 0xfffff, type 0x1b
                          DPL 0, pres 1, long 1, def32 0, gran 0
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 3499 (accton)
trap number             = 12
panic: page fault
cpuid = 1
Uptime: 13m26s
Physical memory: 8167 MB
Dumping 1435 MB: 1420 1404 1388panic: bufwrite: buffer is not busy???
cpuid = 1
 1372 1356 1340 1324 1308Uptime: 13m28s
Automatic reboot in 10 seconds - press a key on the console to abort
Enable biba/mls/lomac/partition, set all to active, run accton. Kernel panics via kassert in mac_get_label.


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