https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244706
--- Comment #2 from Eugene Grosbein <eu...@freebsd.org> ---
Also, this system does not clear RAM between reboots, so dmesg buffer survives
panic and saved to the log after reboot:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 02
fault virtual address = 0x3b8
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80b024ad
stack pointer = 0x28:0xfffffe022b5ed720
frame pointer = 0x28:0xfffffe022b5ed7a0
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 = 12 (swi4: clock (0))
trap number = 12
panic: page fault
cpuid = 1
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff803b4bbb =
db_trace_self_wrapper+0x2b/frame 0xfffffe022b5ed3d0
vpanic() at 0xffffffff80b2253e = vpanic+0x17e/frame 0xfffffe022b5ed430
panic() at 0xffffffff80b223b3 = panic+0x43/frame 0xfffffe022b5ed490
trap_pfault() at 0xffffffff80fb8d00 = trap_pfault/frame 0xfffffe022b5ed4e0
trap_pfault() at 0xffffffff80fb8d49 = trap_pfault+0x49/frame 0xfffffe022b5ed540
trap() at 0xffffffff80fb83dd = trap+0x29d/frame 0xfffffe022b5ed650
calltrap() at 0xffffffff80f979e3 = calltrap+0x8/frame 0xfffffe022b5ed650
--- trap 0xc, rip = 0xffffffff80b024ad, rsp = 0xfffffe022b5ed720, rbp =
0xfffffe022b5ed7a0 ---
__mtx_lock_sleep() at 0xffffffff80b024ad = __mtx_lock_sleep+0xbd/frame
0xfffffe022b5ed7a0
ipreass_slowtimo() at 0xffffffff80ca1078 = ipreass_slowtimo+0x28/frame
0xfffffe022b5ed7e0
pfslowtimo() at 0xffffffff80baa504 = pfslowtimo+0x54/frame 0xfffffe022b5ed810
softclock_call_cc() at 0xffffffff80b3acbf = softclock_call_cc+0x14f/frame
0xfffffe022b5ed8c0
softclock() at 0xffffffff80b3b1b9 = softclock+0x79/frame 0xfffffe022b5ed8e0
intr_event_execute_handlers() at 0xffffffff80ae7119 =
intr_event_execute_handlers+0xe9/frame 0xfffffe022b5ed920
ithread_loop() at 0xffffffff80ae7807 = ithread_loop+0xe7/frame
0xfffffe022b5ed970
fork_exit() at 0xffffffff80ae44c3 = fork_exit+0x83/frame 0xfffffe022b5ed9b0
fork_trampoline() at 0xffffffff80f989fe = fork_trampoline+0xe/frame
0xfffffe022b5ed9b0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
Uptime: 24d16h23m51s
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