login: witness: lock order reversal: 1st 0xffff8000015ae318 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd80687eb618 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(fffffd80687eb618,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd80687eb600,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd80687eb600,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806763ac20,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806763ac20,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c586868) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff80003c586868) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff8000015ae158,fffffd806ba5fa00,ffff80002a4767e8) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff8000015ae158,fffffd806eb8ff00,fffffd806ba5fa00,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff8000015ae158,fffffd806ba5fa00,ffff80003c586ae8,0,0,0) at sosend+0x804 sendit(ffff80002a4767e8,4,ffff80003c586c60,0,ffff80003c586d20) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendmsg(ffff80002a4767e8,ffff80003c586dd0,ffff80003c586d20) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597 syscall(ffff80003c586dd0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c586dd0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e7d4082fa0, count: -15 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c5864e0 rbx 0xfffffd800470ce00 rdx 0xffff8000014344c0 rcx 0xffff80002a4767e8 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c5863c0 r9 0x8080808080808080 r10 0x4b9418d28d4084f9 r11 0xaff3dde79235ac9f r12 0 r13 0xfffffd8003f24f00 r14 0x3 r15 0xffffffff rip 0xffffffff810240e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c5864d0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=244864 pid=55099 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a476558,0xffffffff839eb828 process=0xffff8000fffec958 user=0xffff80003c581000, vmspace=0xfffffd806bcf83b0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55099 37886 56184 0 2 0 syz-executor *55099 244864 56184 0 7 0x4000000 syz-executor 49560 286436 61970 0 3 0x80 nanoslp syz-executor 49560 347262 61970 0 3 0x4000080 fsleep syz-executor 49560 367936 61970 0 2 0x4000000 syz-executor 23036 292688 0 0 3 0x14200 acct acct 23302 165302 25483 0 3 0x82 nanoslp syz-executor 78971 100600 0 0 3 0x14280 nfsidl nfsio 57078 204163 0 0 3 0x14280 nfsidl nfsio 45451 271799 0 0 3 0x14280 nfsidl nfsio 50104 131973 0 0 3 0x14280 nfsidl nfsio 60965 447749 0 0 3 0x14280 nfsidl nfsio 41574 447042 0 0 3 0x14280 nfsidl nfsio 10003 412899 0 0 3 0x14280 nfsidl nfsio 6677 377501 0 0 3 0x14280 nfsidl nfsio 89598 179875 0 0 3 0x14280 nfsidl nfsio 19624 124876 0 0 3 0x14280 nfsidl nfsio 2581 428152 0 0 3 0x14280 nfsidl nfsio 42418 91535 0 0 3 0x14280 nfsidl nfsio 69799 175609 0 0 3 0x14280 nfsidl nfsio 88265 5510 0 0 3 0x14280 nfsidl nfsio 42140 411778 0 0 3 0x14280 nfsidl nfsio 94687 145381 0 0 3 0x14280 nfsidl nfsio 39842 444290 0 0 3 0x14280 nfsidl nfsio 56726 282826 0 0 3 0x14280 nfsidl nfsio 94573 289969 0 0 3 0x14280 nfsidl nfsio 53195 215192 0 0 3 0x14280 nfsidl nfsio 7100 86402 1 0 3 0x100083 ttyin getty 56184 492642 25483 0 3 0x82 nanoslp syz-executor 67582 233949 71865 0 3 0x82 sbwait sshd-session 46512 282809 71865 0 3 0x82 sbwait sshd-session 69904 401601 0 0 3 0x14200 bored sosplice 99886 241343 88241 0 3 0x100082 sbwait ndp 88241 795 66858 0 3 0x10008a sigsusp sh 88632 408618 76118 0 3 0x100082 sbwait arp 76118 37070 17929 0 3 0x10008a sigsusp sh 15923 476534 25483 0 3 0x82 wait syz-executor 17183 30652 25483 0 3 0x2 biowait syz-executor 47961 202235 25483 0 3 0x82 nanoslp syz-executor 61970 121390 25483 0 3 0x82 nanoslp syz-executor 66858 233998 25483 0 3 0x82 wait syz-executor 17929 475118 25483 0 3 0x82 wait syz-executor 25483 455843 95004 0 3 0x82 kqread syz-executor 95004 118250 25975 0 3 0x10008a sigsusp ksh 25975 415614 31397 0 3 0x98 kqread sshd-session 31397 485285 71865 0 3 0x92 kqread sshd-session 71865 11472 1 0 3 0x88 kqread sshd 94993 238489 18095 74 3 0x1100092 bpf pflogd 18095 407220 1 0 3 0x80 sbwait pflogd 54522 353446 66130 73 3 0x1100090 kqread syslogd 66130 511567 1 0 3 0x100082 sbwait syslogd 22800 63100 1 0 3 0x100080 kqread resolvd 59440 487021 22875 77 3 0x100092 kqread dhcpleased 11831 348768 22875 77 3 0x100092 kqread dhcpleased 22875 369092 1 0 3 0x80 kqread dhcpleased 88983 252165 0 0 3 0x14200 bored smr 16070 290310 0 0 2 0x14200 zerothread 28097 286823 0 0 3 0x14200 aiodoned aiodoned 95834 399154 0 0 3 0x14200 syncer update 92891 398925 0 0 3 0x14200 cleaner cleaner 65000 52185 0 0 7 0x14200 reaper 26084 444368 0 0 3 0x14200 pgdaemon pagedaemon 67852 341207 0 0 3 0x14200 bored viomb 85126 434818 0 0 3 0x40014200 acpi0 acpi0 92223 274977 0 0 3 0x40014200 idle1 53461 419979 0 0 3 0x14200 bored softnet3 91001 451833 0 0 3 0x14200 bored softnet2 71173 473497 0 0 3 0x14200 bored softnet1 80404 446346 0 0 3 0x14200 bored softnet0 68073 281249 0 0 3 0x14200 bored systqmp 89682 108642 0 0 3 0x14200 bored systq 42014 153503 0 0 3 0x14200 tmoslp softclockmp 20943 104190 0 0 3 0x40014200 tmoslp softclock 21372 43151 0 0 3 0x40014200 idle0 1 327974 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 55099 (syz-executor) thread 0xffff80002a4767e8 (244864) 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 (0xffff8000015ae318) #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 17183 (syz-executor) thread 0xffff80002a391c48 (30652) exclusive rrwlock inode r = 0 (0xfffffd80687eb0a0) #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 (0xfffffd80687eb1b8) #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 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1866 #12 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10238 11234K 11564K 166960K 13335 0 pcb 18 13K 14K 166960K 359 0 rtable 178 8K 9K 166960K 601 0 pf 37 18K 20K 166960K 162 0 ifaddr 36 6K 7K 166960K 116 0 ifgroup 55 2K 2K 166960K 203 0 sysctl 4 1K 1K 166960K 4 0 counters 64 36K 37K 166960K 200 0 ioctlops 0 0K 4K 166960K 1792 0 iov 0 0K 36K 166960K 135 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1398 88K 88K 166960K 2538 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 31 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 97 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 114K 166960K 1638 0 sigio 0 0K 0K 166960K 63 0 proc 73 91K 140K 166960K 732 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 268 0 in_multi 66 4K 6K 166960K 184 0 ether_multi 1 0K 0K 166960K 14 0 mrt 1 0K 0K 166960K 9 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 675 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 243 74K 88K 166960K 16896 0 UVM aobj 44 4K 4K 166960K 47 0 pinsyscall 48 96K 108K 166960K 2856 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 76 0 NDP 12 0K 1K 166960K 76 0 temp 75 8648K 8757K 166960K 81861 0 kqueue 17 23K 34K 166960K 324 0 SYN cache 2 10K 18K 166960K 3 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 120 147 0 142 1 0 1 1 0 8 0 rtentry 112 181 0 108 3 0 3 3 0 8 0 unpcb 144 1850 0 1829 11 5 6 7 0 8 5 syncache 336 18 0 18 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 808 447 0 437 9 3 6 8 0 8 4 arp 120 33 0 17 1 0 1 1 0 8 0 inpcb 376 1803 0 1788 22 13 9 15 0 8 6 nd6 136 30 0 15 1 0 1 1 0 8 0 pkpcb 40 26 0 26 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1168 47 0 47 2 1 1 1 0 8 1 pppxif 1472 9 0 9 3 2 1 1 0 8 1 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 1 1 0 1 1 0 8 0 pffrent 40 7 0 3 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 24 133 0 24 1 0 1 1 0 8 0 pfstkey 128 133 0 24 4 0 4 4 0 8 0 pfstate 376 131 0 24 11 0 11 11 0 8 0 pfrule 1344 56 0 50 2 1 1 2 0 8 0 art_heap8 4096 4 0 1 3 0 3 3 0 8 0 art_heap4 256 808 0 439 30 3 27 27 0 8 2 art_table 32 812 0 440 4 0 4 4 0 8 0 art_node 16 173 0 112 1 0 1 1 0 8 0 sysvmsgpl 40 89 0 80 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 94 0 84 1 0 1 1 0 8 0 shmpl 112 44 0 3 2 0 2 2 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 4395 0 2891 95 0 95 95 0 8 0 ffsino 280 4395 0 2891 109 0 109 109 0 8 0 nchpl 144 6715 0 5022 63 0 63 63 0 8 0 rtmask 32 7 0 7 1 1 0 1 0 8 0 uvmvnodes 80 5106 0 0 105 0 105 105 0 8 0 vnodes 216 5106 0 0 284 0 284 284 0 8 0 namei 1024 23923 0 23922 2 1 1 1 0 8 0 percpumem 16 114 0 68 1 0 1 1 0 8 0 kstatmem 264 114 0 90 3 1 2 3 0 8 0 scsiplug 72 11 0 11 1 1 0 1 0 8 0 scxspl 216 24198 0 24197 14 12 2 8 1 8 1 plimitpl 152 288 0 270 1 0 1 1 0 8 0 sigapl 424 1969 0 1894 9 0 9 9 0 8 0 futexpl 64 22401 0 22400 1 0 1 1 0 8 0 knotepl 120 581 0 0 18 0 18 18 0 8 0 kqueuepl 216 807 0 796 5 4 1 5 0 8 0 pipepl 328 378 0 349 8 0 8 8 0 8 5 fdescpl 504 1927 0 1894 6 0 6 6 0 8 0 filepl 152 13400 0 13162 24 9 15 19 0 8 4 lockfpl 104 858 0 855 3 1 2 2 0 8 1 lockfspl 48 193 0 190 1 0 1 1 0 8 0 sessionpl 144 38 0 27 1 0 1 1 0 8 0 pgrppl 48 62 0 43 1 0 1 1 0 8 0 ucredpl 104 1816 0 1801 1 0 1 1 0 8 0 zombiepl 144 1897 0 1894 1 0 1 1 0 8 0 processpl 1176 1969 0 1894 6 0 6 6 0 8 0 procpl 656 4409 0 4330 8 0 8 8 0 8 0 srpgc 96 8 0 8 3 3 0 1 0 8 0 sosppl 168 28 0 28 3 2 1 1 0 8 1 sockpl 688 3888 0 3847 44 32 12 22 0 8 7 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 8 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 112 0 0 14 0 14 14 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 42 0 0 6 2 4 6 0 8 0 mtagpl 96 89 0 0 3 0 3 3 0 8 0 mbufpl 256 370 0 0 22 0 22 22 0 8 0 bufpl 280 7648 0 1494 440 0 440 440 0 8 0 anonpl 24 264298 0 256557 76 11 65 72 0 184 0 amapchunkpl 152 55370 0 54812 38 11 27 32 0 158 1 amappl16 200 5671 0 5493 33 18 15 22 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 142 0 126 1 0 1 1 0 8 0 amappl13 176 74 0 74 1 1 0 1 0 8 0 amappl12 168 2625 0 2589 4 1 3 3 0 8 0 amappl11 160 71 0 57 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 255 0 255 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 131 0 115 1 0 1 1 0 8 0 amappl6 120 227 0 219 1 0 1 1 0 8 0 amappl5 112 130 0 120 1 0 1 1 0 8 0 amappl4 104 384 0 359 1 0 1 1 0 8 0 amappl3 96 11307 0 11195 4 0 4 4 0 8 0 amappl2 88 810 0 729 2 0 2 2 0 8 0 amappl1 80 15611 0 14810 19 0 19 19 0 8 0 amappl 88 16346 0 16175 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 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 7 0 7 2 2 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 46 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1927 0 1893 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1927 0 1893 1 0 1 1 0 8 0 vmmpekpl 168 17169 0 17108 4 0 4 4 0 8 0 vmmpepl 168 125920 0 123605 122 9 113 115 0 357 1 vmsppl 456 1926 0 1893 5 0 5 5 0 8 0 rwobjpl 64 39926 0 33395 109 2 107 107 0 8 0 pdppl 4096 3861 0 3786 119 38 81 87 0 8 6 pvpl 32 20209 0 0 163 0 163 163 0 265 0 pmappl 248 1926 0 1893 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 325 0 53 8 0 8 8 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(fffffd80687eb618,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd80687eb600,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd80687eb600,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806763ac20,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806763ac20,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c586868) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff80003c586868) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff8000015ae158,fffffd806ba5fa00,ffff80002a4767e8) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff8000015ae158,fffffd806eb8ff00,fffffd806ba5fa00,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff8000015ae158,fffffd806ba5fa00,ffff80003c586ae8,0,0,0) at sosend+0x804 sendit(ffff80002a4767e8,4,ffff80003c586c60,0,ffff80003c586d20) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendmsg(ffff80002a4767e8,ffff80003c586dd0,ffff80003c586d20) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:597 syscall(ffff80003c586dd0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c586dd0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6e7d4082fa0, 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 __mp_lock(ffffffff839068f0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839068f0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 reaper(ffff80002a2f91f8) at reaper+0x24b sys/kern/kern_exit.c:481 end trace frame: 0x0, count: -5