witness: lock order reversal: 1st 0xffff80000151b558 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806dd8e870 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff833fd222 -> 0xffffffff833a5512 is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 #1 sblock+0xb7 sys/kern/uipc_socket2.c:536 #2 soreceive+0x28e sys/kern/uipc_socket.c:882 #3 fifo_read+0x11a sys/miscfs/fifofs/fifo_vnops.c:264 #4 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #5 vn_rdwr+0x15b #6 vndsetcred+0xa1 sys/dev/vnd.c:684 #7 vndioctl+0xe6c 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+0x5c3 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] sbufsnd (&so->so_snd.sb_lock) #0 rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 #1 sblock+0xb7 sys/kern/uipc_socket2.c:536 #2 sosplice+0x40d sys/kern/uipc_socket.c:1364 #3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1221 #4 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(fffffd806dd8e870,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd8e858,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd8e858,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd8074d67a80,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8074d67a80,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff800039fe3638) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff800039fe3638) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff80000151b398,fffffd807ade8500,ffff800038b66d10) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff80000151b398,fffffd806cab5000,fffffd807ade8500,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff80000151b398,fffffd807ade8500,ffff800039fe38b8,0,0,0) at sosend+0x804 sendit(ffff800038b66d10,3,ffff800039fe3a30,0,ffff800039fe3af0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendmsg(ffff800038b66d10,ffff800039fe3ba0,ffff800039fe3af0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597 syscall(ffff800039fe3ba0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039fe3ba0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc248e9cca30, count: -15 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff800039fe32b0 rbx 0xfffffd800470d0a8 rdx 0xffff8000014487c0 rcx 0xffff800038b66d10 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff800039fe3190 r9 0x8080808080808080 r10 0x97b91787ec8ac0df r11 0x4923dfe679bcc6c2 r12 0 r13 0xfffffd8003f24f00 r14 0x3 r15 0xffffffff rip 0xffffffff810240e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800039fe32a0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=235317 pid=18932 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a34ea60,0xffff800038b67760 process=0xffff80003a4d0de8 user=0xffff800039fde000, vmspace=0xfffffd800b34b740 estcpu=32, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 24870 452991 1404 0 2 0 syz-executor 24870 306429 1404 0 2 0x4000000 syz-executor 92439 268967 88634 0 2 0 syz-executor 92439 453159 88634 0 3 0x4000080 fsleep syz-executor 5316 217959 30266 0 2 0 syz-executor 5316 495148 30266 0 3 0x4000080 fsleep syz-executor 18932 222633 27667 0 2 0 syz-executor *18932 235317 27667 0 7 0x4000000 syz-executor 60821 8054 67387 0 2 0 syz-executor 60821 517316 67387 0 3 0x4000080 fsleep syz-executor 159 345933 48328 0 3 0x80 nanoslp syz-executor 159 185163 48328 0 3 0x4000080 netcon syz-executor 159 285727 48328 0 3 0x4000080 fsleep syz-executor 50724 334102 69878 0 2 0 syz-executor 50724 184754 69878 0 3 0x4000080 fsleep syz-executor 1404 464760 9270 0 3 0x82 nanoslp syz-executor 59664 178375 0 0 3 0x14280 nfsidl nfsio 43 345994 0 0 3 0x14280 nfsidl nfsio 62898 389914 0 0 3 0x14280 nfsidl nfsio 65244 144343 0 0 3 0x14280 nfsidl nfsio 7948 447666 0 0 3 0x14280 nfsidl nfsio 66243 388417 0 0 3 0x14280 nfsidl nfsio 40860 417888 0 0 3 0x14280 nfsidl nfsio 73855 289685 0 0 3 0x14280 nfsidl nfsio 49056 121546 0 0 3 0x14280 nfsidl nfsio 48090 128924 0 0 3 0x14280 nfsidl nfsio 15561 364274 0 0 3 0x14280 nfsidl nfsio 68201 140277 0 0 3 0x14280 nfsidl nfsio 42920 115922 0 0 3 0x14280 nfsidl nfsio 4063 504004 0 0 3 0x14280 nfsidl nfsio 54240 388367 0 0 3 0x14280 nfsidl nfsio 29275 514151 0 0 3 0x14280 nfsidl nfsio 87644 74456 0 0 3 0x14280 nfsidl nfsio 74722 309133 0 0 3 0x14280 nfsidl nfsio 13511 506800 0 0 3 0x14280 nfsidl nfsio 40400 472001 0 0 3 0x14280 nfsidl nfsio 32327 511748 0 0 3 0x14200 bored sosplice 48328 502991 9270 0 3 0x82 nanoslp syz-executor 88112 227804 9270 0 3 0x2 biowait syz-executor 30266 324251 9270 0 3 0x82 nanoslp syz-executor 27667 58475 9270 0 3 0x82 nanoslp syz-executor 69878 73978 9270 0 3 0x82 nanoslp syz-executor 67387 356319 9270 0 3 0x82 nanoslp syz-executor 88634 499056 9270 0 3 0x82 nanoslp syz-executor 9270 67913 44051 0 3 0x82 kqread syz-executor 44051 480291 43148 0 3 0x10008a sigsusp ksh 43148 144836 78880 0 3 0x98 kqread sshd-session 78880 36601 34476 0 3 0x92 kqread sshd-session 34760 294914 1 0 3 0x100083 ttyopn getty 34476 41339 1 0 3 0x88 kqread sshd 55741 476557 14684 74 3 0x1100092 bpf pflogd 14684 306075 1 0 3 0x80 sbwait pflogd 59103 322068 91784 73 3 0x1100090 kqread syslogd 91784 371746 1 0 3 0x100082 sbwait syslogd 90886 178204 1 0 3 0x100080 kqread resolvd 34891 65733 85587 77 3 0x100092 kqread dhcpleased 30662 508295 85587 77 3 0x100092 kqread dhcpleased 85587 277236 1 0 3 0x80 kqread dhcpleased 39369 148776 0 0 3 0x14200 bored smr 50797 331155 0 0 2 0x14200 zerothread 16736 297342 0 0 3 0x14200 aiodoned aiodoned 98315 198943 0 0 3 0x14200 syncer update 46966 5345 0 0 3 0x14200 cleaner cleaner 20765 99836 0 0 3 0x14200 reaper reaper 20882 324077 0 0 3 0x14200 pgdaemon pagedaemon 93872 500183 0 0 3 0x14200 bored viomb 90056 335103 0 0 3 0x40014200 acpi0 acpi0 28809 281961 0 0 7 0x40014200 idle1 78978 212182 0 0 3 0x14200 bored softnet3 20246 389291 0 0 3 0x14200 bored softnet2 65753 159300 0 0 3 0x14200 bored softnet1 13741 368242 0 0 3 0x14200 bored softnet0 33454 509333 0 0 3 0x14200 bored systqmp 36392 387225 0 0 3 0x14200 bored systq 30975 326473 0 0 3 0x14200 tmoslp softclockmp 49898 153382 0 0 3 0x40014200 tmoslp softclock 4314 436910 0 0 3 0x40014200 idle0 1 360814 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 18932 (syz-executor) thread 0xffff800038b66d10 (235317) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83906af8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 unp_connect+0x26c sys/kern/uipc_usrreq.c:868 #2 uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 #3 sosend+0x804 #4 sendit+0x721 sys/kern/uipc_syscalls.c:779 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff80000151b558) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 sosend+0x2e2 sys/kern/uipc_socket.c:631 #4 sendit+0x721 sys/kern/uipc_syscalls.c:779 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 88112 (syz-executor) thread 0xffff80002a34e540 (227804) exclusive rrwlock inode r = 0 (0xfffffd806bc61960) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cc7dbc8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10242 11159K 11428K 166960K 13225 0 pcb 18 17K 18K 166960K 220 0 rtable 209 8K 9K 166960K 539 0 pf 37 18K 21K 166960K 194 0 ifaddr 39 6K 8K 166960K 91 0 ifgroup 56 2K 2K 166960K 148 0 sysctl 3 1K 1K 166960K 3 0 counters 64 36K 37K 166960K 158 0 ioctlops 0 0K 4K 166960K 1708 0 iov 0 0K 16K 166960K 159 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1396 88K 88K 166960K 2381 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 110 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 1135 0 sigio 0 0K 0K 166960K 14 0 proc 73 91K 128K 166960K 706 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 115 0 in_multi 88 6K 7K 166960K 151 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 630 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 230 73K 87K 166960K 11915 0 UVM aobj 26 2K 2K 166960K 28 0 pinsyscall 42 84K 106K 166960K 2273 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 84 0 NDP 12 0K 1K 166960K 63 0 temp 76 8648K 8712K 166960K 57246 0 kqueue 13 20K 32K 166960K 194 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 231 0 228 3 2 1 3 0 8 0 rtentry 112 158 0 66 4 0 4 4 0 8 0 unpcb 144 666 0 647 4 2 2 3 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 808 371 0 366 7 5 2 7 0 8 1 arp 120 25 0 8 1 0 1 1 0 8 0 ipq 40 2 0 2 2 2 0 1 0 8 0 ipqe 40 4 0 4 2 2 0 1 0 8 0 inpcb 376 1587 0 1575 23 13 10 14 0 8 7 nd6 136 37 0 12 2 1 1 2 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1168 34 0 34 2 1 1 1 0 8 1 pppxif 1472 5 0 5 2 1 1 1 0 8 1 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pffrag 232 8 0 2 1 0 1 1 0 482 0 pffrnode 88 8 0 2 1 0 1 1 0 8 0 pffrent 40 47 0 41 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pftag 88 1 0 1 1 1 0 1 0 8 0 pfstitem 24 91 0 24 1 0 1 1 0 8 0 pfstkey 128 229 0 162 3 0 3 3 0 8 0 pfstate 376 159 0 93 7 0 7 7 0 8 0 pfrule 1344 28 0 21 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 649 0 238 32 2 30 32 0 8 2 art_table 32 651 0 238 5 1 4 5 0 8 0 art_node 16 154 0 71 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 107 0 97 1 0 1 1 0 8 0 shmpl 112 25 0 2 1 0 1 1 0 8 0 dirhash 1024 40 0 23 3 0 3 3 0 8 0 dino2pl 256 3454 0 1947 95 0 95 95 0 8 0 ffsino 280 3454 0 1947 109 0 109 109 0 8 0 nchpl 144 5010 0 3318 63 0 63 63 0 8 0 rtmask 32 5 0 5 3 2 1 1 0 8 1 uvmvnodes 80 4204 0 0 86 0 86 86 0 8 0 vnodes 216 4204 0 0 234 0 234 234 0 8 0 namei 1024 18105 0 18104 2 1 1 2 0 8 0 percpumem 16 93 0 47 1 0 1 1 0 8 0 kstatmem 264 84 0 60 2 0 2 2 0 8 0 scsiplug 72 6 0 6 2 1 1 1 0 8 1 scxspl 216 15272 0 15271 12 10 2 8 1 8 1 plimitpl 152 217 0 200 1 0 1 1 0 8 0 sigapl 424 1453 0 1383 11 2 9 9 0 8 1 futexpl 64 15682 0 15677 1 0 1 1 0 8 0 knotepl 120 557 0 0 17 0 17 17 0 8 0 kqueuepl 216 386 0 376 6 3 3 3 0 8 2 pipepl 328 371 0 343 13 6 7 8 0 8 4 fdescpl 504 1413 0 1382 6 1 5 6 0 8 0 filepl 152 9645 0 9417 23 6 17 18 0 8 7 lockfpl 104 317 0 312 1 0 1 1 0 8 0 lockfspl 48 143 0 138 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 45 0 28 1 0 1 1 0 8 0 ucredpl 104 1405 0 1392 1 0 1 1 0 8 0 zombiepl 144 1383 0 1383 1 0 1 1 0 8 1 processpl 1176 1453 0 1383 6 0 6 6 0 8 0 procpl 656 3002 0 2924 9 1 8 8 0 8 0 srpgc 96 6 0 6 3 3 0 1 0 8 0 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 688 2505 0 2473 28 17 11 17 0 8 7 mcl64k 65536 4 0 0 1 0 1 1 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 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 16 0 16 16 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 118 0 0 3 0 3 3 0 8 0 mbufpl 256 1035 0 0 65 0 65 65 0 8 0 bufpl 280 5324 0 139 371 0 371 371 0 8 0 anonpl 24 191409 0 182951 104 3 101 101 0 184 23 amapchunkpl 152 38579 0 38001 31 5 26 29 0 158 1 amappl16 200 3848 0 3585 43 3 40 40 0 8 13 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 115 0 103 1 0 1 1 0 8 0 amappl13 176 7 0 7 3 3 0 1 0 8 0 amappl12 168 2088 0 2056 4 1 3 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 272 0 272 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 131 0 118 1 0 1 1 0 8 0 amappl6 120 205 0 202 1 0 1 1 0 8 0 amappl5 112 131 0 121 1 0 1 1 0 8 0 amappl4 104 330 0 309 1 0 1 1 0 8 0 amappl3 96 7854 0 7740 4 0 4 4 0 8 0 amappl2 88 681 0 616 2 0 2 2 0 8 0 amappl1 80 11077 0 10504 15 1 14 14 0 8 0 amappl 88 11454 0 11280 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 2 0 1 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 3 2 1 1 0 8 1 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 27 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1413 0 1382 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1413 0 1382 1 0 1 1 0 8 0 vmmpekpl 168 13051 0 13005 3 0 3 3 0 8 0 vmmpepl 168 89905 0 87790 113 0 113 113 0 357 9 vmsppl 456 1412 0 1382 5 0 5 5 0 8 0 rwobjpl 64 28952 0 23548 96 1 95 95 0 8 6 pdppl 4096 2833 0 2764 101 30 71 87 0 8 2 pvpl 32 23279 0 0 189 1 188 188 0 265 0 pmappl 248 1412 0 1382 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 346 0 45 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(fffffd806dd8e870,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd8e858,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd8e858,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd8074d67a80,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8074d67a80,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff800039fe3638) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff800039fe3638) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff80000151b398,fffffd807ade8500,ffff800038b66d10) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff80000151b398,fffffd806cab5000,fffffd807ade8500,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff80000151b398,fffffd807ade8500,ffff800039fe38b8,0,0,0) at sosend+0x804 sendit(ffff800038b66d10,3,ffff800039fe3a30,0,ffff800039fe3af0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendmsg(ffff800038b66d10,ffff800039fe3ba0,ffff800039fe3af0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597 syscall(ffff800039fe3ba0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800039fe3ba0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc248e9cca30, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff800029a9bff0) at sched_idle+0x558 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5