witness: shared lock of (rwlock) maddr while exclusively locked panic: excl->share Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 58980 55668 0 0x2 0 0 syz-executor *349124 1881 0 0x14000 0x200 1 softclockmp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b4a35) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffff80000158b878,1,0) at witness_checkorder+0x122c sys/kern/subr_witness.c:854 rw_do_enter_read(ffff80000158b860,0) at rw_do_enter_read+0x99 sys/kern/kern_rwlock.c:355 in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 in6_lookupmulti sys/netinet6/in6.c:-1 [inline] in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 sys/netinet6/in6.c:1150 ip6_output(fffffd8069f4ef00,ffffffff839eee58,0,0,ffff80002a1fe880,0) at ip6_output+0x13bd sys/netinet6/ip6_output.c:507 mld6_sendpkt(ffff8000015ac880,83,0) at mld6_sendpkt+0x385 sys/netinet6/mld6.c:499 mld6_fasttimo() at mld6_fasttimo+0x16d mld6_checktimer sys/netinet6/mld6.c:395 [inline] mld6_fasttimo() at mld6_fasttimo+0x16d sys/netinet6/mld6.c:369 pffasttimo(ffffffff83a15020) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1 timeout_run(ffffffff83835dd8,ffffffff83a15020) at timeout_run+0x159 sys/kern/kern_timeout.c:698 softclock_thread_run(ffffffff83835dd8) at softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842 softclock_thread_mp(ffff8000ffffea60) at softclock_thread_mp+0x86 end trace frame: 0x0, count: 3 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: excl->share ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b4a35) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffff80000158b878,1,0) at witness_checkorder+0x122c sys/kern/subr_witness.c:854 rw_do_enter_read(ffff80000158b860,0) at rw_do_enter_read+0x99 sys/kern/kern_rwlock.c:355 in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 in6_lookupmulti sys/netinet6/in6.c:-1 [inline] in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 sys/netinet6/in6.c:1150 ip6_output(fffffd8069f4ef00,ffffffff839eee58,0,0,ffff80002a1fe880,0) at ip6_output+0x13bd sys/netinet6/ip6_output.c:507 mld6_sendpkt(ffff8000015ac880,83,0) at mld6_sendpkt+0x385 sys/netinet6/mld6.c:499 mld6_fasttimo() at mld6_fasttimo+0x16d mld6_checktimer sys/netinet6/mld6.c:395 [inline] mld6_fasttimo() at mld6_fasttimo+0x16d sys/netinet6/mld6.c:369 pffasttimo(ffffffff83a15020) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1 timeout_run(ffffffff83835dd8,ffffffff83a15020) at timeout_run+0x159 sys/kern/kern_timeout.c:698 softclock_thread_run(ffffffff83835dd8) at softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842 softclock_thread_mp(ffff8000ffffea60) at softclock_thread_mp+0x86 end trace frame: 0x0, count: -12 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a1fe4d0 rbx 0xffff8000299dee07 rdx 0 rcx 0xffff8000ffffea60 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd4177127b57331f9 r11 0x178dbc341f3d4843 r12 0xffff8000299dec08 r13 0 r14 0 r15 0x1 rip 0xffffffff810e0165 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a1fe4c0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (softclockmp) tid=349124 pid=1881 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=0, usrpri=50, slppri=0, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffef90,0xffff8000ffffe2a8 process=0xffff8000ffffa680 user=0xffff80002a1f9000, vmspace=0xffffffff83a0c438 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82898 482797 98351 0 2 0 syz-executor 82898 375754 98351 0 2 0x4000000 syz-executor 90647 113141 4296 0 2 0 syz-executor 90647 377231 4296 0 3 0x4000080 fsleep syz-executor 90647 225807 4296 0 2 0x4000000 syz-executor 72889 167022 53400 0 2 0 syz-executor 72889 507892 53400 0 3 0x4000080 fsleep syz-executor 98544 377228 40727 0 2 0 syz-executor 98544 431521 40727 0 3 0x4000080 fsleep syz-executor 40827 85695 13151 0 2 0 syz-executor 40827 289078 13151 0 3 0x4000080 kqread syz-executor 40827 424524 13151 0 3 0x4000080 fsleep syz-executor 58724 104927 0 0 3 0x14200 acct acct 53501 226544 56657 0 3 0x3000 suspend syz-executor 53501 78179 56657 0 2 0x4081000 syz-executor 53501 281750 56657 0 3 0x4081000 inode syz-executor 83957 413566 1 0 3 0x100083 ttyin getty 55668 58980 8154 0 7 0x2 syz-executor 56657 91988 8154 0 3 0x82 nanoslp syz-executor 19228 66743 8154 0 3 0x82 wait syz-executor 40727 226704 8154 0 3 0x82 nanoslp syz-executor 13151 367257 8154 0 2 0xc82 syz-executor 98351 347164 8154 0 3 0x82 nanoslp syz-executor 4296 507580 8154 0 3 0x82 nanoslp syz-executor 53400 494555 8154 0 3 0x82 nanoslp syz-executor 8154 499982 26251 0 3 0x82 kqread syz-executor 26251 376020 70624 0 3 0x10008a sigsusp ksh 70624 475171 24131 0 3 0x98 kqread sshd-session 24131 161787 44854 0 3 0x92 kqread sshd-session 44854 254853 1 0 3 0x88 kqread sshd 33668 333575 61108 74 3 0x1100092 bpf pflogd 61108 281330 1 0 3 0x80 sbwait pflogd 48883 177243 46782 73 3 0x1100090 kqread syslogd 46782 127495 1 0 3 0x100082 sbwait syslogd 73327 371769 1 0 3 0x100080 kqread resolvd 86133 329013 46893 77 3 0x100092 kqread dhcpleased 10720 264527 46893 77 3 0x100092 kqread dhcpleased 46893 475379 1 0 3 0x80 kqread dhcpleased 81453 170867 0 0 3 0x14200 bored smr 95216 510581 0 0 3 0x14200 pgzero zerothread 16758 129379 0 0 3 0x14200 aiodoned aiodoned 46279 314034 0 0 3 0x14200 syncer update 67696 332436 0 0 3 0x14200 cleaner cleaner 14614 136156 0 0 3 0x14200 reaper reaper 25651 279345 0 0 3 0x14200 pgdaemon pagedaemon 99393 59498 0 0 3 0x14200 bored viomb 99568 342129 0 0 3 0x40014200 acpi0 acpi0 41128 296606 0 0 3 0x40014200 idle1 30274 322211 0 0 3 0x14200 bored softnet1 79088 485787 0 0 3 0x14200 bored softnet0 60368 311739 0 0 3 0x14200 bored systqmp 76967 23768 0 0 3 0x14200 bored systq * 1881 349124 0 0 7 0x14200 softclockmp 23989 300751 0 0 3 0x40014200 tmoslp softclock 76663 158292 0 0 3 0x40014200 idle0 1 153734 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 90647 (syz-executor) thread 0xffff80003c40b780 (225807) exclusive rwlock fdlock r = 0 (0xffff8000fffeccd0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 doopenat+0x18e sys/kern/vfs_syscalls.c:1105 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #4 Xsyscall+0x128 Process 53501 (syz-executor) thread 0xffff80003c40b250 (78179) exclusive rrwlock inode r = 0 (0xfffffd805f900460) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 55668 (syz-executor) thread 0xffff8000fffee7e0 (58980) exclusive rrwlock inode r = 0 (0xfffffd805f900338) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d7d0450) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 #9 Xsyscall+0x128 Process 1881 (softclockmp) thread 0xffff8000ffffea60 (349124) exclusive rwlock maddr r = 0 (0xffff80000158b878) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 mld6_fasttimo+0x8c mld6_checktimer sys/netinet6/mld6.c:-1 [inline] #2 mld6_fasttimo+0x8c sys/netinet6/mld6.c:369 #3 pffasttimo+0x184 sys/kern/uipc_domain.c:-1 #4 timeout_run+0x159 sys/kern/kern_timeout.c:698 #5 softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842 #6 softclock_thread_mp+0x86 #7 proc_trampoline+0x10 shared rwlock netlock r = 0 (0xffffffff83891cc0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 mld6_fasttimo+0x5f sys/netinet6/mld6.c:-1 #3 pffasttimo+0x184 sys/kern/uipc_domain.c:-1 #4 timeout_run+0x159 sys/kern/kern_timeout.c:698 #5 softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842 #6 softclock_thread_mp+0x86 #7 proc_trampoline+0x10 shared rwlock timeout r = 0 (0xffffffff83835d78) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 timeout_run+0x131 sys/kern/kern_timeout.c:694 #2 softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842 #3 softclock_thread_mp+0x86 #4 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11062 12088K 12411K 166960K 12445 0 pcb 22 14K 16K 166960K 127 0 rtable 233 8K 8K 166960K 407 0 pf 34 17K 18K 166960K 68 0 ifaddr 41 7K 7K 166960K 59 0 ifgroup 55 2K 2K 166960K 84 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 104 0 ioctlops 0 0K 4K 166960K 1515 0 iov 0 0K 12K 166960K 72 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1405 88K 89K 166960K 1660 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 366 0 sigio 0 0K 0K 166960K 9 0 proc 72 115K 148K 166960K 554 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 30 0 in_multi 92 7K 7K 166960K 108 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 403 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 246 161K 169K 166960K 5285 0 UVM aobj 46 5K 5K 166960K 48 0 pinsyscall 42 84K 106K 166960K 1507 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 12 0K 2K 166960K 39 0 temp 45 8671K 8737K 166960K 18380 0 kqueue 14 20K 26K 166960K 58 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 46 0 43 1 0 1 1 0 8 0 rtentry 176 118 0 19 6 0 6 6 0 8 0 unpcb 144 152 0 128 2 0 2 2 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 124 0 118 7 0 7 7 0 8 6 arp 136 18 0 0 1 0 1 1 0 8 0 inpcb 328 385 0 372 9 2 7 7 0 8 5 nd6 152 27 0 2 2 0 2 2 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 14 0 14 3 2 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 1 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 30 0 1 1 0 1 1 0 8 0 pfstkey 128 30 0 1 1 0 1 1 0 8 0 pfstate 448 30 0 1 4 0 4 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 502 0 94 30 1 29 29 0 8 1 art_table 40 505 0 94 5 0 5 5 0 8 0 art_node 32 118 0 28 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 2 1 1 1 0 8 1 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 44 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2059 0 543 96 0 96 96 0 8 0 ffsino 296 2059 0 543 118 0 118 118 0 8 0 nchpl 144 2585 0 886 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 vnodes 216 2308 0 0 129 0 129 129 0 8 0 namei 1024 8443 0 8442 4 2 2 2 0 8 1 percpumem 16 67 0 17 1 0 1 1 0 8 0 vcpupl 3968 1 0 0 1 0 1 1 0 8 0 vmpool 848 1 0 0 1 0 1 1 0 8 0 kstatmem 264 48 0 22 3 1 2 3 0 8 0 scxspl 216 13974 0 13974 3 2 1 2 1 8 1 plimitpl 152 72 0 54 1 0 1 1 0 8 0 sigapl 424 680 0 632 7 1 6 7 0 8 0 knotepl 120 537 0 0 17 0 17 17 0 8 0 kqueuepl 224 92 0 79 1 0 1 1 0 8 0 pipepl 344 141 0 113 3 0 3 3 0 8 0 fdescpl 528 662 0 631 3 0 3 3 0 8 0 filepl 160 3524 0 3286 15 2 13 13 0 8 1 lockfpl 104 75 0 72 1 0 1 1 0 8 0 lockfspl 48 33 0 30 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 36 0 19 1 0 1 1 0 8 0 ucredpl 104 475 0 461 1 0 1 1 0 8 0 zombiepl 144 687 0 685 2 1 1 1 0 8 0 processpl 1232 680 0 632 5 0 5 5 0 8 0 procpl 664 1088 0 1031 6 0 6 6 0 8 0 sockpl 752 655 0 614 11 1 10 10 0 8 5 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 11 0 0 1 0 1 1 0 8 0 mbufpl 256 152 0 0 10 0 10 10 0 8 0 bufpl 280 5856 0 128 410 0 410 410 0 8 0 anonpl 32 9598 0 0 78 0 78 78 0 246 0 amapchunkpl 152 16748 0 16131 42 12 30 31 0 158 6 amappl16 200 2969 0 2742 26 7 19 19 0 8 1 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 5 0 5 1 1 0 1 0 8 0 amappl13 176 427 0 426 1 0 1 1 0 8 0 amappl12 168 1069 0 1027 3 0 3 3 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 52 0 37 1 0 1 1 0 8 0 amappl9 144 280 0 280 1 1 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 83 0 82 1 0 1 1 0 8 0 amappl6 120 282 0 268 1 0 1 1 0 8 0 amappl5 112 89 0 79 1 0 1 1 0 8 0 amappl4 104 429 0 399 1 0 1 1 0 8 0 amappl3 96 2668 0 2577 4 1 3 3 0 8 0 amappl2 88 792 0 716 2 0 2 2 0 8 0 amappl1 80 10576 0 9980 15 1 14 15 0 8 0 amappl 88 4501 0 4333 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 47 0 2 1 0 1 1 0 8 0 uaddrrnd 24 662 0 631 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 662 0 631 1 0 1 1 0 8 0 vmmpekpl 168 7282 0 7240 3 0 3 3 0 8 0 vmmpepl 168 50624 0 48500 115 14 101 101 0 357 1 vmsppl 488 661 0 631 6 1 5 5 0 8 0 rwobjpl 80 17597 0 16317 31 1 30 30 0 8 0 pdppl 4096 1334 0 1263 109 34 75 86 0 8 4 pvpl 32 18006 0 0 147 1 146 147 0 265 0 pmappl 256 662 0 631 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 294 0 40 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e3ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83902bc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83902bc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83902bc0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffffd806d16f030) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd806d16f030) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 VOP_BWRITE(fffffd806d16f030) at VOP_BWRITE+0x60 sys/kern/vfs_vops.c:651 ufs_direnter(fffffd806d44f7d8,fffffd805ec279a0,ffff80002a3bc240,ffff80002a3bc570,fffffd8067b2e8e0) at ufs_direnter+0x7ac sys/ufs/ufs/ufs_lookup.c:833 ufs_mkdir(ffff80002a3bc3e0) at ufs_mkdir+0x5d5 sys/ufs/ufs/ufs_vnops.c:1179 VOP_MKDIR(fffffd806d44f7d8,ffff80002a3bc540,ffff80002a3bc570,ffff80002a3bc470) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000fffee7e0,ffffff9c,7e8fd7ddab20,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 syscall(ffff80002a3bc6f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bc6f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 end trace frame: 0xffff80002a3bc770, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837e3ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83902bc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83902bc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83902bc0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 biowait(fffffd806d16f030) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd806d16f030) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 VOP_BWRITE(fffffd806d16f030) at VOP_BWRITE+0x60 sys/kern/vfs_vops.c:651 ufs_direnter(fffffd806d44f7d8,fffffd805ec279a0,ffff80002a3bc240,ffff80002a3bc570,fffffd8067b2e8e0) at ufs_direnter+0x7ac sys/ufs/ufs/ufs_lookup.c:833 ufs_mkdir(ffff80002a3bc3e0) at ufs_mkdir+0x5d5 sys/ufs/ufs/ufs_vnops.c:1179 VOP_MKDIR(fffffd806d44f7d8,ffff80002a3bc540,ffff80002a3bc570,ffff80002a3bc470) at VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 domkdirat(ffff8000fffee7e0,ffffff9c,7e8fd7ddab20,1ff) at domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 syscall(ffff80002a3bc6f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bc6f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e8fd7ddabc0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b4a35) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffff80000158b878,1,0) at witness_checkorder+0x122c sys/kern/subr_witness.c:854 rw_do_enter_read(ffff80000158b860,0) at rw_do_enter_read+0x99 sys/kern/kern_rwlock.c:355 in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 in6_lookupmulti sys/netinet6/in6.c:-1 [inline] in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 sys/netinet6/in6.c:1150 ip6_output(fffffd8069f4ef00,ffffffff839eee58,0,0,ffff80002a1fe880,0) at ip6_output+0x13bd sys/netinet6/ip6_output.c:507 mld6_sendpkt(ffff8000015ac880,83,0) at mld6_sendpkt+0x385 sys/netinet6/mld6.c:499 mld6_fasttimo() at mld6_fasttimo+0x16d mld6_checktimer sys/netinet6/mld6.c:395 [inline] mld6_fasttimo() at mld6_fasttimo+0x16d sys/netinet6/mld6.c:369 pffasttimo(ffffffff83a15020) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1 timeout_run(ffffffff83835dd8,ffffffff83a15020) at timeout_run+0x159 sys/kern/kern_timeout.c:698 softclock_thread_run(ffffffff83835dd8) at softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842 softclock_thread_mp(ffff8000ffffea60) at softclock_thread_mp+0x86 end trace frame: 0x0, count: 3 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833b4a35) at panic+0x1e5 sys/kern/subr_prf.c:198 witness_checkorder(ffff80000158b878,1,0) at witness_checkorder+0x122c sys/kern/subr_witness.c:854 rw_do_enter_read(ffff80000158b860,0) at rw_do_enter_read+0x99 sys/kern/kern_rwlock.c:355 in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 in6_lookupmulti sys/netinet6/in6.c:-1 [inline] in6_hasmulti(fffffd8069f4eff0,ffff80000158b800) at in6_hasmulti+0x41 sys/netinet6/in6.c:1150 ip6_output(fffffd8069f4ef00,ffffffff839eee58,0,0,ffff80002a1fe880,0) at ip6_output+0x13bd sys/netinet6/ip6_output.c:507 mld6_sendpkt(ffff8000015ac880,83,0) at mld6_sendpkt+0x385 sys/netinet6/mld6.c:499 mld6_fasttimo() at mld6_fasttimo+0x16d mld6_checktimer sys/netinet6/mld6.c:395 [inline] mld6_fasttimo() at mld6_fasttimo+0x16d sys/netinet6/mld6.c:369 pffasttimo(ffffffff83a15020) at pffasttimo+0x184 sys/kern/uipc_domain.c:-1 timeout_run(ffffffff83835dd8,ffffffff83a15020) at timeout_run+0x159 sys/kern/kern_timeout.c:698 softclock_thread_run(ffffffff83835dd8) at softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842 softclock_thread_mp(ffff8000ffffea60) at softclock_thread_mp+0x86 end trace frame: 0x0, count: -12