panic: maddr rwlock 0xffff8000002a20b8: enter read deadlock
Starting stack trace...
panic(ffffffff83325ab2) at panic+0x1ba sys/kern/subr_prf.c:229
rw_do_enter_read(ffff8000002a20b8,0) at rw_do_enter_read+0x435 sys/kern/kern_rwlock.c:379
in_hasmulti(fffffd806b97ccbc,ffff8000002a2058) at in_hasmulti+0x41 in_lookupmulti sys/netinet/in.c:-1 [inline]
in_hasmulti(fffffd806b97ccbc,ffff8000002a2058) at in_hasmulti+0x41 sys/netinet/in.c:991
ip_output(fffffd806b97cc00,fffffd807e9c6d00,0,0,ffff80003c997b38,0,1701100dc7ef57cb) at ip_output+0x9a9 sys/netinet/ip_output.c:302
igmp_sendpkt(ffff8000002a2058,ffff80000165a600,16,0) at igmp_sendpkt+0x193 igmpstat_inc sys/netinet/igmp_var.h:-1 [inline]
igmp_sendpkt(ffff8000002a2058,ffff80000165a600,16,0) at igmp_sendpkt+0x193 sys/netinet/igmp.c:734
igmp_joingroup(ffff80000165a600,ffff8000002a2058) at igmp_joingroup+0xd9 sys/netinet/igmp.c:561
in_addmulti(ffff80003c997cd0,ffff8000002a2058) at in_addmulti+0x315 sys/netinet/in.c:925
ip_setmoptions(c,fffffd806c950620,fffffd80611a0300,0) at ip_setmoptions+0xdcb sys/netinet/ip_output.c:1602
sosetopt(ffff8000015b9cc8,0,c,fffffd80611a0300) at sosetopt+0x118 sys/kern/uipc_socket.c:-1
sys_setsockopt(ffff80002a7882c0,ffff80003c997ec0,ffff80003c997e10) at sys_setsockopt+0x2b9 sys/kern/uipc_syscalls.c:1227
syscall(ffff80003c997ec0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c997ec0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b7154b1cf0, count: 245
End of stack trace.