Rare kernel panic on 23.09.1-RELEASE (amd64), non-Netgate HW

pst

I received this easter egg today during normal operation.

Fatal trap 9: general protection fault while in kernel mode
cpuid = 7; apic id = 07
instruction pointer	= 0x20:0xffffffff8128b88a
stack pointer	        = 0x28:0xfffffe00cc0bdc10
frame pointer	        = 0x28:0xfffffe00cc0bdd60
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		= 73857 (sysctl)
rdi: fffff8002bddb868 rsi: fffffe00033b7c08 rdx: fffffe00033b7c08
rcx: 0000000000000000  r8: fffff80145e58000  r9: 00000000000000c6
rax: fefff801acac6f00 rbx: fffffffffffffff8 rbp: fffffe00cc0bdd60
r10: fffff8011bf9d040 r11: fffff80145e58000 r12: 000000011bf9d067
r13: fffffe001000fe80 r14: fffffe00033b7bd0 r15: 800000007f4f2425
trap number		= 9
panic: general protection fault
cpuid = 7
time = 1711803858
KDB: enter: panic

I see a lot of "<7>arpresolve: can't allocate llinfo for <snipped> on igb0" which is normally seen when the WAN has gone down.

db:1:pfs> bt
Tracing pid 73857 tid 113360 td 0xfffffe00cbd8b720
kdb_enter() at kdb_enter+0x32/frame 0xfffffe00cc0bd950
vpanic() at vpanic+0x163/frame 0xfffffe00cc0bda80
panic() at panic+0x43/frame 0xfffffe00cc0bdae0
trap_fatal() at trap_fatal+0x40c/frame 0xfffffe00cc0bdb40
calltrap() at calltrap+0x8/frame 0xfffffe00cc0bdb40
--- trap 0x9, rip = 0xffffffff8128b88a, rsp = 0xfffffe00cc0bdc10, rbp = 0xfffffe00cc0bdd60 ---
pmap_remove_pages() at pmap_remove_pages+0x6ba/frame 0xfffffe00cc0bdd60
vmspace_exit() at vmspace_exit+0x80/frame 0xfffffe00cc0bdd90
exit1() at exit1+0x53a/frame 0xfffffe00cc0bddf0
sys_exit() at sys_exit+0xd/frame 0xfffffe00cc0bde00
amd64_syscall() at amd64_syscall+0x109/frame 0xfffffe00cc0bdf30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00cc0bdf30
--- syscall (1, FreeBSD ELF64, exit), rip = 0x13f74a52852a, rsp = 0x13f7489204d8, rbp = 0x13f7489204f0 ---

Where should I upload the dump file, if need be?

Thanks.

stephenw10

You can upload it here: https://nc.netgate.com/nextcloud/s/4a77yNmCcRPQBoN

That backtrace is very generic though.

pst

@stephenw10 Done. It would be good to know if it suggests a hardware issue, or just a software bug. Thanks.

stephenw10

Hmm, as you say the llinfo arp messages have obscured anything that might give us a clue.

Really not much to go on there. The backtrace shows a general memory error but that could be hardware or software.

Is that the first time it has happened? Did it happen after upgrading to 23.09.1?