witness: lock order reversal: 1st 0xffff800010fcce28 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806e1b9230 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(fffffd806e1b9230,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e1b9218,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e1b9218,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8064e46cc0,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd8064e46cc0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vget(fffffd8064e46cc0,2001) at vget+0x2a2 sys/kern/vfs_subr.c:693 ktrwriteraw(ffff80003c418d18,fffffd8064e46cc0,fffffd80097fb8f0,ffff80002a3566a0,ffff80002a356680) at ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688 ktrnamei(ffff80003c418d18,ffff80002a274400) at ktrnamei+0x145 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrnamei(ffff80003c418d18,ffff80002a274400) at ktrnamei+0x145 sys/kern/kern_ktrace.c:222 namei(ffff80002a3567f0) at namei+0x29e sys/kern/vfs_lookup.c:170 unp_connect(ffff800010fccc40,fffffd805c1ac900,ffff80003c418d18) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fccc40,fffffd80773f5100,fffffd805c1ac900,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fccc40,fffffd805c1ac900,ffff80002a356a78,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c418d18,8,ffff80002a356bf8,e,ffff80002a356cb0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003c418d18,ffff80002a356d60,ffff80002a356cb0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80002a356d60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a356d60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd773c32d0, count: -17 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80002a356310 rbx 0 rdx 0xffff80000144b5c0 rcx 0xffff80003c418d18 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80002a3561f0 r9 0x8080808080808080 r10 0xd42d5cae14c4050a r11 0x46bc55ebf74b918e r12 0xfffffd8003ef7680 r13 0xfffffd80046df818 r14 0x3 r15 0xffffffff833dadbe substchar+0xb292 rip 0xffffffff81d6b285 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a356300 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=334745 pid=27172 tcnt=2 stat=onproc flags process=0 proc=4000001 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c433a18,0xffff80003c4182c8 process=0xffff80003c4d4e98 user=0xffff80002a351000, vmspace=0xfffffd8068b89d78 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76040 70171 59718 0 7 0x1 syz-executor 76040 462886 59718 0 3 0x4000080 fsleep syz-executor 76040 186169 59718 0 3 0x4000080 fsleep syz-executor 58916 339638 18845 0 2 0 syz-executor 58916 192712 18845 0 3 0x4000080 fsleep syz-executor 27172 457318 28796 0 2 0 syz-executor *27172 334745 28796 0 7 0x4000001 syz-executor 17893 184779 81180 0 2 0 syz-executor 17893 462006 81180 0 3 0x4000080 fsleep syz-executor 98712 325968 41880 0 2 0 syz-executor 98712 182167 41880 0 3 0x4000080 fsleep syz-executor 18860 478669 43500 0 2 0 syz-executor 18860 266843 43500 0 3 0x4000080 fsleep syz-executor 95296 365710 8948 0 2 0 syz-executor 95296 249890 8948 0 2 0x4000000 syz-executor 95296 476886 8948 0 2 0x4000000 syz-executor 95296 477077 8948 0 3 0x4000080 fsleep syz-executor 8948 409928 88125 0 3 0x82 nanoslp syz-executor 41880 227058 88125 0 3 0x82 nanoslp syz-executor 52540 503342 1 0 3 0x100083 ttyin getty 43500 28711 88125 0 3 0x82 nanoslp syz-executor 18845 440068 88125 0 3 0x82 nanoslp syz-executor 59718 479066 88125 0 3 0x82 nanoslp syz-executor 99482 101523 0 0 3 0x14280 nfsidl nfsio 62917 432945 0 0 3 0x14280 nfsidl nfsio 40226 431457 0 0 3 0x14280 nfsidl nfsio 99596 96748 0 0 3 0x14280 nfsidl nfsio 16053 63350 0 0 3 0x14280 nfsidl nfsio 53874 511246 0 0 3 0x14280 nfsidl nfsio 35912 430107 0 0 3 0x14280 nfsidl nfsio 69517 294259 0 0 3 0x14280 nfsidl nfsio 16342 238968 0 0 3 0x14280 nfsidl nfsio 69892 312983 0 0 3 0x14280 nfsidl nfsio 83821 61067 0 0 3 0x14280 nfsidl nfsio 32973 444330 0 0 3 0x14280 nfsidl nfsio 8438 496111 0 0 3 0x14280 nfsidl nfsio 95965 106414 0 0 3 0x14280 nfsidl nfsio 91414 111103 0 0 3 0x14280 nfsidl nfsio 3854 20517 0 0 3 0x14280 nfsidl nfsio 6247 510575 0 0 3 0x14280 nfsidl nfsio 85667 7997 0 0 3 0x14280 nfsidl nfsio 38182 215197 0 0 3 0x14280 nfsidl nfsio 40012 75802 0 0 3 0x14280 nfsidl nfsio 15245 371242 0 0 3 0x14200 bored sosplice 81180 288064 88125 0 3 0x82 nanoslp syz-executor 79584 197988 88125 0 3 0x82 wait syz-executor 28796 303460 88125 0 3 0x82 nanoslp syz-executor 88125 2083 61332 0 2 0x2 syz-executor 61332 466364 4059 0 3 0x10008a sigsusp ksh 4059 258005 28132 0 3 0x98 kqread sshd-session 28132 167458 48395 0 3 0x92 kqread sshd-session 48395 417391 1 0 3 0x88 kqread sshd 60336 417855 6504 74 3 0x1100092 bpf pflogd 6504 523393 1 0 3 0x80 sbwait pflogd 78172 465864 56735 73 3 0x1100090 kqread syslogd 56735 517748 1 0 3 0x100082 sbwait syslogd 60979 431152 1 0 3 0x100080 kqread resolvd 3857 209071 1859 77 3 0x100092 kqread dhcpleased 77833 362294 1859 77 3 0x100092 kqread dhcpleased 1859 455260 1 0 3 0x80 kqread dhcpleased 98318 159206 0 0 3 0x14200 bored smr 68117 314472 0 0 2 0x14200 zerothread 35705 240406 0 0 3 0x14200 aiodoned aiodoned 48175 412014 0 0 3 0x14200 syncer update 88457 165091 0 0 3 0x14200 cleaner cleaner 75043 501339 0 0 3 0x14200 reaper reaper 73450 57240 0 0 3 0x14200 pgdaemon pagedaemon 19952 495794 0 0 3 0x14200 bored viomb 89231 431415 0 0 3 0x40014200 acpi0 acpi0 32907 66846 0 0 3 0x40014200 idle1 43255 133587 0 0 3 0x14200 bored softnet1 50028 119066 0 0 2 0x14200 softnet0 96739 287631 0 0 3 0x14200 bored systqmp 73757 326095 0 0 3 0x14200 bored systq 20766 203665 0 0 3 0x14200 tmoslp softclockmp 45877 499103 0 0 3 0x40014200 tmoslp softclock 47657 317145 0 0 3 0x40014200 idle0 1 341048 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 27172 (syz-executor) thread 0xffff80003c418d18 (334745) exclusive kernel_lock &kernel_lock r = 1 (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 (0xffff800010fcce28) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10236 11276K 13943K 166960K 15590 0 pcb 17 14K 16K 166960K 554 0 rtable 245 13K 13K 166960K 644 0 pf 39 18K 67485K 166960K 232 0 ifaddr 44 8K 8K 166960K 167 0 ifgroup 59 2K 2K 166960K 274 0 sysctl 4 1K 9K 166960K 21 0 counters 70 37K 37K 166960K 418 0 ioctlops 0 0K 5K 166960K 1897 0 iov 0 0K 28K 166960K 281 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1578 99K 100K 166960K 3691 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 29 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 68 0 dirhash 12 2K 2K 166960K 60 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2132 0 sigio 0 0K 0K 166960K 273 0 proc 72 115K 180K 166960K 986 0 subproc 72 4K 4K 166960K 144 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 372 0 in_multi 99 7K 7K 166960K 260 0 ether_multi 1 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 838 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 247 160K 175K 166960K 20467 0 UVM aobj 67 3K 3K 166960K 73 0 pinsyscall 43 86K 101K 166960K 3421 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 97 0 NDP 13 0K 1K 166960K 120 0 temp 81 8652K 8908K 166960K 113423 0 kqueue 13 20K 32K 166960K 449 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 120 248 0 245 3 2 1 2 0 8 0 rtentry 176 228 0 132 5 0 5 5 0 8 0 unpcb 144 1372 0 1352 10 9 1 4 0 8 0 syncache 336 10 0 10 5 4 1 1 0 8 1 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 980 0 971 17 15 2 7 0 8 1 arp 136 27 0 12 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 328 2617 0 2599 21 19 2 13 0 8 0 nd6 152 41 0 22 1 0 1 1 0 8 0 pkpcb 40 16 0 16 4 3 1 1 0 8 1 kcovpl 48 16 0 8 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 150 0 150 2 1 1 1 0 8 1 pppxif 1504 9 0 9 3 3 0 1 0 8 0 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pffrag 232 16 0 5 1 0 1 1 0 482 0 pffrnode 88 12 0 2 1 0 1 1 0 8 0 pffrent 40 34 0 23 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 116 0 54 1 0 1 1 0 8 0 pfstkey 128 118 0 57 3 0 3 3 0 8 0 pfstate 384 115 0 55 7 0 7 7 0 8 0 pfrule 1344 29 0 23 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1041 0 611 39 12 27 30 0 8 0 art_table 40 1044 0 611 5 0 5 5 0 8 0 art_node 32 222 0 143 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 62 0 53 1 0 1 1 0 8 0 shmpl 112 70 0 6 2 0 2 2 0 8 0 dirhash 1024 49 0 32 3 0 3 3 0 8 0 dino2pl 256 5348 0 3823 96 0 96 96 0 8 0 ffsino 296 5348 0 3823 118 0 118 118 0 8 0 nchpl 144 8108 0 6391 64 0 64 64 0 8 0 rtmask 32 11 0 11 4 4 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 29629 0 29628 2 1 1 1 0 8 0 percpumem 16 224 0 174 1 0 1 1 0 8 0 kstatmem 264 180 0 150 5 2 3 3 0 8 0 scsiplug 72 7 0 7 5 4 1 1 0 8 1 scxspl 216 44353 0 44352 12 10 2 6 1 8 1 plimitpl 152 594 0 577 1 0 1 1 0 8 0 sigapl 424 2416 0 2347 8 0 8 8 0 8 0 knotepl 120 527 0 0 15 0 15 15 0 8 0 kqueuepl 224 766 0 757 6 5 1 3 0 8 0 pipepl 344 549 0 521 15 12 3 9 0 8 0 fdescpl 528 2376 0 2344 3 0 3 3 0 8 0 filepl 160 17228 0 16989 25 12 13 16 0 8 0 lockfpl 104 1166 0 1162 3 1 2 2 0 8 1 lockfspl 48 535 0 531 1 0 1 1 0 8 0 sessionpl 144 36 0 27 1 0 1 1 0 8 0 pgrppl 48 83 0 66 1 0 1 1 0 8 0 ucredpl 104 2649 0 2636 1 0 1 1 0 8 0 zombiepl 144 2348 0 2347 1 0 1 1 0 8 0 processpl 1232 2416 0 2347 6 0 6 6 0 8 0 procpl 664 5681 0 5602 8 0 8 8 0 8 0 sosppl 168 7 0 7 3 3 0 1 0 8 0 sockpl 752 4351 0 4310 28 22 6 18 0 8 1 mcl64k 65536 14 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 112 0 0 14 0 14 14 0 8 0 mcl2k 2048 33 0 0 5 0 5 5 0 8 0 mtagpl 96 15 0 0 1 0 1 1 0 8 0 mbufpl 256 1336 0 0 83 0 83 83 0 8 0 bufpl 280 17006 0 10862 439 0 439 439 0 8 0 anonpl 32 12359 0 0 100 0 100 100 0 246 0 amapchunkpl 152 68525 0 67939 43 16 27 33 0 158 1 amappl16 200 6619 0 6547 59 47 12 26 0 8 2 amappl15 192 7 0 7 2 2 0 1 0 8 0 amappl14 184 145 0 133 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 3145 0 3113 4 1 3 3 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 192 0 180 1 0 1 1 0 8 0 amappl6 120 262 0 258 1 0 1 1 0 8 0 amappl5 112 152 0 142 1 0 1 1 0 8 0 amappl4 104 321 0 301 1 0 1 1 0 8 0 amappl3 96 12381 0 12283 4 1 3 3 0 8 0 amappl2 88 2681 0 2598 2 0 2 2 0 8 0 amappl1 80 17775 0 17180 16 2 14 14 0 8 0 amappl 88 19315 0 19141 5 0 5 5 0 92 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 3 0 1 0 8 0 dma64 64 9 0 9 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 22 0 21 1 0 1 1 0 8 0 aobjpl 72 72 0 6 2 0 2 2 0 8 0 uaddrrnd 24 2376 0 2344 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2376 0 2344 1 0 1 1 0 8 0 vmmpekpl 168 19297 0 19245 3 0 3 3 0 8 0 vmmpepl 168 151506 0 149432 130 28 102 108 0 357 5 vmsppl 488 2375 0 2344 6 1 5 5 0 8 0 rwobjpl 80 45256 0 38281 148 0 148 148 0 8 2 pdppl 4096 4760 0 4688 128 54 74 86 0 8 2 pvpl 32 21812 0 0 178 2 176 177 0 265 0 pmappl 256 2375 0 2344 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 407 0 90 10 0 10 10 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(ffff80003c489410,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+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83928e20) at __mp_lock+0x199 sys/kern/kern_lock.c:165 intr_handler(ffff80003c489570,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+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83928e20) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 ktrsysret(ffff80003c4182b8,4a,0,ffff80003c489760) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80003c4182b8,4a,0,ffff80003c489760) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80003c489810) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80003c489810) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:767 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72291c92bac0, 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(fffffd806e1b9230,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e1b9218,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e1b9218,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8064e46cc0,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd8064e46cc0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vget(fffffd8064e46cc0,2001) at vget+0x2a2 sys/kern/vfs_subr.c:693 ktrwriteraw(ffff80003c418d18,fffffd8064e46cc0,fffffd80097fb8f0,ffff80002a3566a0,ffff80002a356680) at ktrwriteraw+0x175 sys/kern/kern_ktrace.c:688 ktrnamei(ffff80003c418d18,ffff80002a274400) at ktrnamei+0x145 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrnamei(ffff80003c418d18,ffff80002a274400) at ktrnamei+0x145 sys/kern/kern_ktrace.c:222 namei(ffff80002a3567f0) at namei+0x29e sys/kern/vfs_lookup.c:170 unp_connect(ffff800010fccc40,fffffd805c1ac900,ffff80003c418d18) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fccc40,fffffd80773f5100,fffffd805c1ac900,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fccc40,fffffd805c1ac900,ffff80002a356a78,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c418d18,8,ffff80002a356bf8,e,ffff80002a356cb0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003c418d18,ffff80002a356d60,ffff80002a356cb0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80002a356d60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a356d60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd773c32d0, count: -17