login: witness: lock order reversal: 1st 0xffff800010fd24f8 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806e175dd0 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff833d1e1a -> 0xffffffff83343bfc is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 sblock+0xb6 sys/kern/uipc_socket2.c:536 #2 soreceive+0x27d sys/kern/uipc_socket.c:870 #3 fifo_read+0x117 sys/miscfs/fifofs/fifo_vnops.c:264 #4 VOP_READ+0x101 sys/kern/vfs_vops.c:227 #5 vn_rdwr+0x15b sys/kern/vfs_vnops.c:-1 #6 vndsetcred+0xa1 sys/dev/vnd.c:684 #7 vndioctl+0xdfe sys/dev/vnd.c:485 #8 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #9 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #10 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] sbufsnd (&so->so_snd.sb_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 sblock+0xb6 sys/kern/uipc_socket2.c:536 #2 sosplice+0x3e1 sys/kern/uipc_socket.c:1347 #3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1227 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #5 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(fffffd806e175dd0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e175db8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e175db8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd807408bcd8,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd807408bcd8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff800038c02c70) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff800038c02c70) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fd2310,fffffd806355aa00,ffff80003c4327f0) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fd2310,fffffd806ecce500,fffffd806355aa00,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fd2310,fffffd806355aa00,ffff800038c02ef8,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c4327f0,5,ffff800038c03078,e,ffff800038c03130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003c4327f0,ffff800038c031e0,ffff800038c03130) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff800038c031e0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c031e0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21eb55b1750, count: -15 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff800038c028f0 rbx 0 rdx 0xffff80000144ec40 rcx 0xffff80003c4327f0 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff800038c027d0 r9 0x8080808080808080 r10 0xb3580be41447bf4d r11 0x40784ddf7cad7bd8 r12 0xfffffd8003ef7680 r13 0xfffffd80046ded78 r14 0x3 r15 0xffffffff833dadbe substchar+0xb292 rip 0xffffffff81d6b285 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800038c028e0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=226425 pid=99517 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c432a88,0xffff80003a819258 process=0xffff80002a3df508 user=0xffff800038bfe000, vmspace=0xfffffd806b8167c0 estcpu=36, cpticks=6, pctcpu=0.0, user=0, sys=6, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 10010 270679 33177 0 2 0 syz-executor 10010 374410 33177 0 3 0x4000080 fsleep syz-executor 21152 136241 7151 0 2 0 syz-executor 21152 140926 7151 0 3 0x4000080 fsleep syz-executor 94600 155555 8087 0 2 0 syz-executor 94600 285512 8087 0 3 0x4000080 fsleep syz-executor 40789 372401 21256 0 2 0 syz-executor 40789 311025 21256 0 3 0x4000080 fsleep syz-executor 99517 216776 69278 0 2 0 syz-executor *99517 226425 69278 0 7 0x4000000 syz-executor 99517 88830 69278 0 3 0x4000080 fsleep syz-executor 99517 419263 69278 0 3 0x4000080 fsleep syz-executor 71807 13502 1 0 3 0x100083 ttyin getty 33177 188731 52391 0 3 0x82 nanoslp syz-executor 90989 138733 52391 0 3 0x82 piperd syz-executor 18668 285260 0 0 3 0x14200 bored sosplice 2756 75775 52391 0 3 0x82 nanoslp syz-executor 96814 96901 52391 0 3 0x2 biowait syz-executor 21256 228060 52391 0 3 0x82 nanoslp syz-executor 69278 61567 52391 0 3 0x82 nanoslp syz-executor 7151 33409 52391 0 3 0x82 nanoslp syz-executor 8087 235981 52391 0 3 0x82 nanoslp syz-executor 52391 484124 12066 0 7 0x3 syz-executor 12066 80571 79634 0 3 0x10008a sigsusp ksh 79634 444973 14010 0 3 0x98 kqread sshd-session 14010 347030 87327 0 3 0x92 kqread sshd-session 87327 242421 1 0 3 0x88 kqread sshd 63342 37676 69305 74 3 0x1100092 bpf pflogd 69305 288062 1 0 3 0x80 sbwait pflogd 41680 43538 38126 73 3 0x1100090 kqread syslogd 38126 328187 1 0 3 0x100082 sbwait syslogd 8281 448286 1 0 3 0x100080 kqread resolvd 69798 243304 75784 77 3 0x100092 kqread dhcpleased 47029 9157 75784 77 3 0x100092 kqread dhcpleased 75784 166693 1 0 3 0x80 kqread dhcpleased 59497 375733 0 0 3 0x14200 pause smr 24577 179624 0 0 2 0x14200 zerothread 62622 116797 0 0 3 0x14200 aiodoned aiodoned 79998 119945 0 0 3 0x14200 syncer update 72722 404554 0 0 3 0x14200 cleaner cleaner 94752 415753 0 0 3 0x14200 reaper reaper 99028 64243 0 0 3 0x14200 pgdaemon pagedaemon 18134 370826 0 0 3 0x14200 bored viomb 76458 122829 0 0 3 0x40014200 acpi0 acpi0 29050 116897 0 0 3 0x40014200 idle1 11044 222673 0 0 3 0x14200 bored softnet1 5349 25910 0 0 2 0x14200 softnet0 14013 342342 0 0 3 0x14200 smrbar systqmp 7832 334776 0 0 3 0x14200 bored systq 5662 361348 0 0 3 0x14200 tmoslp softclockmp 1834 489239 0 0 3 0x40014200 tmoslp softclock 66642 161455 0 0 3 0x40014200 idle0 1 434739 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 99517 (syz-executor) thread 0xffff80003c4327f0 (226425) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83929028) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 unp_connect+0x28c sys/kern/uipc_usrreq.c:872 #2 uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 #3 sosend+0x804 sys/kern/uipc_socket.c:-1 #4 sendit+0x5a5 sys/kern/uipc_syscalls.c:785 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff800010fd24f8) #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 sblock+0xb6 sys/kern/uipc_socket2.c:536 #3 sosend+0x2e9 sys/kern/uipc_socket.c:631 #4 sendit+0x5a5 sys/kern/uipc_syscalls.c:785 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #7 Xsyscall+0x128 Process 96814 (syz-executor) thread 0xffff8000fffee548 (96901) exclusive rrwlock inode r = 0 (0xfffffd806ea1fdc0) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ea1c928) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #13 Xsyscall+0x128 Process 14013 (systqmp) thread 0xffff8000ffffecf8 (342342) shared rwlock systqmp r = 0 (0xffffffff837b06a8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10240 11185K 11442K 166960K 13708 0 pcb 22 14K 30K 166960K 659 0 rtable 186 10K 10K 166960K 696 0 pf 32 17K 19K 166960K 174 0 ifaddr 37 7K 8K 166960K 130 0 ifgroup 51 2K 2K 166960K 222 0 sysctl 4 1K 9K 166960K 16 0 counters 66 36K 38K 166960K 246 0 ioctlops 0 0K 4K 166960K 1946 0 iov 0 0K 24K 166960K 111 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1361 86K 86K 166960K 2740 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 616K 620K 166960K 24 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 261 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 1940 0 sigio 0 0K 0K 166960K 38 0 proc 72 115K 163K 166960K 823 0 subproc 72 4K 4K 166960K 101 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 249 0 in_multi 77 5K 7K 166960K 193 0 ether_multi 1 0K 0K 166960K 14 0 mrt 2 0K 0K 166960K 18 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 666 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 162K 182K 166960K 18749 0 UVM aobj 46 2K 2K 166960K 52 0 pinsyscall 41 82K 101K 166960K 3154 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 147 0 NDP 11 0K 2K 166960K 90 0 temp 146 8653K 8902K 166960K 112029 0 kqueue 17 26K 32K 166960K 354 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 120 234 0 231 3 2 1 3 0 8 0 rtentry 176 231 0 160 5 0 5 5 0 8 0 unpcb 144 1247 0 1227 11 8 3 6 0 8 2 syncache 336 18 0 18 3 2 1 1 0 8 1 tcpqe 32 6 0 6 4 3 1 1 0 8 1 tcpcb 736 487 0 478 3 1 2 2 0 8 1 arp 136 18 0 10 1 0 1 1 0 8 0 inpcb 328 1981 0 1964 18 14 4 7 0 8 2 nd6 152 26 0 12 1 0 1 1 0 8 0 pkpcb 40 21 0 21 3 2 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 68 0 68 2 1 1 1 0 8 1 pppxif 1504 11 0 11 4 3 1 1 0 8 1 pffrag 232 48 0 34 1 0 1 1 0 482 0 pffrnode 88 42 0 32 1 0 1 1 0 8 0 pffrent 40 96 0 82 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfstitem 24 97 0 33 1 0 1 1 0 8 0 pfstkey 128 97 0 33 3 0 3 3 0 8 0 pfstate 384 97 0 33 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 5 0 5 3 2 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 914 0 506 36 8 28 28 0 8 2 art_table 40 917 0 506 5 0 5 5 0 8 0 art_node 32 164 0 102 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 251 0 241 1 0 1 1 0 8 0 shmpl 112 49 0 6 2 0 2 2 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 5096 0 3584 96 0 96 96 0 8 0 ffsino 296 5096 0 3584 118 0 118 118 0 8 0 nchpl 144 7886 0 6188 64 0 64 64 0 8 0 rtmask 32 14 0 14 3 2 1 1 0 8 1 uvmvnodes 80 5793 0 0 119 0 119 119 0 8 0 vnodes 216 5793 0 0 322 0 322 322 0 8 0 namei 1024 27845 0 27844 2 1 1 1 0 8 0 percpumem 16 138 0 90 1 0 1 1 0 8 0 kstatmem 264 138 0 114 6 3 3 3 0 8 1 scsiplug 72 9 0 9 3 2 1 1 0 8 1 scxspl 216 38222 0 38221 13 12 1 8 1 8 0 plimitpl 152 408 0 391 1 0 1 1 0 8 0 sigapl 424 2247 0 2200 7 1 6 7 0 8 0 knotepl 120 740 0 0 23 0 23 23 0 8 0 kqueuepl 224 864 0 851 13 8 5 5 0 8 4 pipepl 344 405 0 378 9 0 9 9 0 8 6 fdescpl 528 2226 0 2196 3 0 3 3 0 8 0 filepl 160 15009 0 14774 27 11 16 16 0 8 4 lockfpl 104 769 0 766 1 0 1 1 0 8 0 lockfspl 48 330 0 327 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 99 0 82 1 0 1 1 0 8 0 ucredpl 104 2520 0 2507 1 0 1 1 0 8 0 zombiepl 144 2201 0 2200 1 0 1 1 0 8 0 processpl 1232 2247 0 2200 5 1 4 5 0 8 0 procpl 664 5348 0 5294 6 0 6 6 0 8 0 sosppl 168 11 0 11 4 3 1 1 0 8 1 sockpl 752 3606 0 3565 32 21 11 17 0 8 6 mcl64k 65536 26 0 0 4 0 4 4 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 130 0 0 17 1 16 17 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 44 0 0 6 0 6 6 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 279 0 0 16 0 16 16 0 8 0 bufpl 280 15335 0 9191 440 0 440 440 0 8 1 anonpl 32 9662 0 0 78 0 78 78 0 246 0 amapchunkpl 152 65660 0 65117 45 11 34 35 0 158 10 amappl16 200 6480 0 6391 24 6 18 18 0 8 5 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 168 0 156 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 2924 0 2894 3 1 2 2 0 8 0 amappl11 160 71 0 56 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 252 0 252 2 2 0 1 0 8 0 amappl8 136 34 0 31 1 0 1 1 0 8 0 amappl7 128 143 0 131 1 0 1 1 0 8 0 amappl6 120 210 0 207 1 0 1 1 0 8 0 amappl5 112 136 0 126 1 0 1 1 0 8 0 amappl4 104 343 0 322 1 0 1 1 0 8 0 amappl3 96 11691 0 11596 4 1 3 3 0 8 0 amappl2 88 2541 0 2462 2 0 2 2 0 8 0 amappl1 80 18860 0 18253 15 0 15 15 0 8 0 amappl 88 17650 0 17485 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 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 128 257 0 257 3 2 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 51 0 6 1 0 1 1 0 8 0 uaddrrnd 24 2226 0 2196 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2226 0 2196 1 0 1 1 0 8 0 vmmpekpl 168 20293 0 20251 3 0 3 3 0 8 0 vmmpepl 168 146054 0 144038 117 12 105 106 0 357 5 vmsppl 488 2225 0 2196 5 0 5 5 0 8 0 rwobjpl 80 44006 0 37166 143 0 143 143 0 8 3 pdppl 4096 4460 0 4392 114 42 72 84 0 8 4 pvpl 32 18132 0 0 146 0 146 146 0 265 0 pmappl 256 2225 0 2196 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 313 0 59 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff837b5ff0) 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(ffffffff83928e20) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83928e20) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2ade80,ffff800000069c00) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83928e20) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83928e20) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2adfe0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83928e20) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83928e20) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff80002a282d08,3,18,ffff80002a2ae290) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a282d08,3,18,ffff80002a2ae290) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a2ae290) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a2ae290) at syscall+0x304 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70213f3d1850, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(fffffd806e175dd0,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e175db8,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e175db8,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd807408bcd8,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd807408bcd8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff800038c02c70) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff800038c02c70) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fd2310,fffffd806355aa00,ffff80003c4327f0) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fd2310,fffffd806ecce500,fffffd806355aa00,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fd2310,fffffd806355aa00,ffff800038c02ef8,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c4327f0,5,ffff800038c03078,e,ffff800038c03130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003c4327f0,ffff800038c031e0,ffff800038c03130) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff800038c031e0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038c031e0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21eb55b1750, count: -15