Another one from my collection.
Apr 16:
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
pool_do_get() at pool_do_get+0x90
pool_get() at pool_get+0xb5
m_get() at m_get+0x28
sbappendaddr() at sbappendaddr+0x9a
uipc_usrreq() at uipc_usrreq+0x3b8
sosend() at sosend+0x3d8
dosendsyslog() at dosendsyslog+0x110
sys_sendsyslog2() at sys_sendsyslog2+0xbd
syscall() at syscall+0x368
--- syscall (number 112) ---
end of kernel
end trace frame: 0x183f8dab6913, count: -9
0x1842755e571a:
ddb{0}> show registers
rdi 0x7
rsi 0x9ff5c49ed229ae92
rbp 0xffff8000222f5b00
rbx 0xffffff022d80d6d0
rdx 0xffff8000222f5b64
rcx 0xffffffff818c76e0 cpu_info_primary
rax 0x7293fa06e984af44
r8 0
r9 0x1
r10 0xffffffff811c7c00 uipc_usrreq
r11 0xffffffff81344be0 copy_fault
r12 0xffffffff8194c000 mbpool
r13 0xffffff40b152a900
r14 0x2
r15 0xffffffff818b4570 sun_noname
rip 0xffffffff811a5340 pool_do_get+0x90
cs 0x8
rflags 0x10282 __ALIGN_SIZE+0xf282
rsp 0xffff8000222f5ab0
ss 0x10
pool_do_get+0x90: movq 0(%r13),%rdi
