panic: excl->share Starting stack trace... panic(ffffffff833b5a1c) at panic+0x1d0 sys/kern/subr_prf.c:229 witness_checkorder(ffff8000015a5078,1,0) at witness_checkorder+0x122c sys/kern/subr_witness.c:854 rw_do_enter_read(ffff8000015a5060,0) at rw_do_enter_read+0x99 sys/kern/kern_rwlock.c:355 in6_hasmulti(fffffd805a7345f0,ffff8000015a5000) at in6_hasmulti+0x41 in6_lookupmulti sys/netinet6/in6.c:-1 [inline] in6_hasmulti(fffffd805a7345f0,ffff8000015a5000) at in6_hasmulti+0x41 sys/netinet6/in6.c:1150 ip6_output(fffffd805a734500,ffffffff83987338,0,1,ffff80003c4dd420,0) at ip6_output+0x13bd sys/netinet6/ip6_output.c:507 mld6_sendpkt(ffff8000015f6180,83,0) at mld6_sendpkt+0x385 sys/netinet6/mld6.c:499 mld6_start_listening(ffff8000015f6180,ffff8000015a5000) at mld6_start_listening+0xe7 sys/netinet6/mld6.c:139 in6_addmulti(ffff80003c4dd7c8,ffff8000015a5000,ffff80003c4dd83c) at in6_addmulti+0x3d7 sys/netinet6/in6.c:1084 in6_joingroup(ffff8000015a5000,ffff80003c4dd7c8,ffff80003c4dd83c) at in6_joingroup+0x6c sys/netinet6/in6.c:-1 in6_update_ifa(ffff8000015a5000,ffff80003c4dd8c0,0) at in6_update_ifa+0x1a86 sys/netinet6/in6.c:-1 in6_ifattach_linklocal(ffff8000015a5000,0) at in6_ifattach_linklocal+0x33b sys/netinet6/in6_ifattach.c:266 in6_ifattach(ffff8000015a5000) at in6_ifattach+0x2d0 sys/netinet6/in6_ifattach.c:384 ifioctl(ffff8000016cd278,801169ab,ffff80003c4ddab0,ffff80002ebd0028) at ifioctl+0x1b13 sys/net/if.c:2218 sys_ioctl(ffff80002ebd0028,ffff80003c4ddc90,ffff80003c4ddbe0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80003c4ddc90) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4ddc90) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72d40ab9c8d0, count: 241 End of stack trace.