witness: lock order reversal: 1st 0xffff800010fda850 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd807399b228 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff834a8bf6 -> 0xffffffff8342285f 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:890 #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:685 #7 vndioctl+0xdfc sys/dev/vnd.c:486 #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:783 #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+0x312 sys/kern/uipc_socket.c:1347 #3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1226 #4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #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(fffffd807399b228,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd807399b210,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd807399b210,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd806af75100,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd806af75100,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c400f80) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c400f80) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fda668,fffffd805f4fc300,ffff80002a321a28) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fda668,fffffd805e8f6700,fffffd805f4fc300,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fda668,fffffd805f4fc300,ffff80003c401208,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a321a28,5,ffff80003c401388,e,ffff80003c401440) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80002a321a28,ffff80003c4014f0,ffff80003c401440) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c4014f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4014f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa05c8b5ac80, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c400bf0 rbx 0 rdx 0 rcx 0xffff80002a321a28 rax 0xffffffff8392cff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003c400ad0 r9 0x8080808080808080 r10 0x96ead644d9cd3f8e r11 0xdc29ebf8d587c968 r12 0xfffffd80040458c0 r13 0xfffffd800482cd78 r14 0x3 r15 0xffffffff834ba9b1 substchar+0xee4e rip 0xffffffff82e4f2c5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c400be0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=442152 pid=35786 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=79, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a320568,0xffff80002f394aa0 process=0xffff80003c495838 user=0xffff80003c3fc000, vmspace=0xfffffd8075d91018 estcpu=29, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 70499 454851 95528 0 7 0 syz-executor 11003 396990 99120 0 2 0 syz-executor 11003 113162 99120 0 3 0x4000080 kqread syz-executor 35786 502554 96498 0 2 0 syz-executor 35786 32771 96498 0 3 0x4000080 sbwait syz-executor *35786 442152 96498 0 7 0x4000000 syz-executor 68503 178716 7663 0 3 0x80 nanoslp syz-executor 68503 296874 7663 0 3 0x4000080 kqsel syz-executor 68503 145562 7663 0 3 0x4000080 fsleep syz-executor 68503 123774 7663 0 3 0x4000080 fsleep syz-executor 9919 80519 9020 0 3 0x2 biowait syz-executor 76142 155863 0 0 3 0x14280 nfsidl nfsio 89925 266543 0 0 3 0x14280 nfsidl nfsio 63235 350026 0 0 3 0x14280 nfsidl nfsio 151 173603 0 0 3 0x14280 nfsidl nfsio 29026 180415 0 0 3 0x14280 nfsidl nfsio 24646 234840 0 0 3 0x14280 nfsidl nfsio 8376 353766 0 0 3 0x14280 nfsidl nfsio 25075 340326 0 0 3 0x14280 nfsidl nfsio 75819 334521 0 0 3 0x14280 nfsidl nfsio 64858 146709 0 0 3 0x14280 nfsidl nfsio 91634 236320 0 0 3 0x14280 nfsidl nfsio 14035 247798 0 0 3 0x14280 nfsidl nfsio 49055 126648 0 0 3 0x14280 nfsidl nfsio 75938 463993 0 0 3 0x14280 nfsidl nfsio 19756 504277 0 0 3 0x14280 nfsidl nfsio 1223 476461 0 0 3 0x14280 nfsidl nfsio 86995 293266 0 0 3 0x14280 nfsidl nfsio 46042 209337 0 0 3 0x14280 nfsidl nfsio 7987 387861 0 0 3 0x14280 nfsidl nfsio 8463 183893 0 0 3 0x14280 nfsidl nfsio 76980 507996 9020 0 2 0x2 syz-executor 9111 399972 59432 0 3 0x100082 sbwait ndp 59432 39332 31008 0 3 0x10008a sigsusp sh 37485 334272 60926 0 3 0x100082 sbwait arp 60926 303584 35296 0 3 0x10008a sigsusp sh 31008 145548 9020 0 3 0x82 wait syz-executor 99120 326413 9020 0 3 0x82 nanoslp syz-executor 35296 343580 9020 0 3 0x82 wait syz-executor 7663 161553 9020 0 3 0x82 nanoslp syz-executor 96498 501416 9020 0 3 0x82 nanoslp syz-executor 95528 142041 9020 0 3 0x82 nanoslp syz-executor 9020 488197 9782 0 3 0x82 kqread syz-executor 9782 263902 89317 0 3 0x10008a sigsusp ksh 89317 230745 30905 0 3 0x98 kqread sshd-session 30905 142088 94053 0 3 0x92 kqread sshd-session 15211 307811 1 0 3 0x100083 ttyopn getty 94053 55559 1 0 3 0x88 kqread sshd 61183 384126 79619 74 3 0x1100092 bpf pflogd 79619 516544 1 0 3 0x80 sbwait pflogd 79002 353987 86092 73 3 0x1100090 kqread syslogd 86092 58236 1 0 3 0x100082 sbwait syslogd 65126 240497 1 0 3 0x100080 kqread resolvd 9371 237781 38502 77 3 0x100092 kqread dhcpleased 54602 162283 38502 77 3 0x100092 kqread dhcpleased 38502 312373 1 0 3 0x80 kqread dhcpleased 77434 482002 0 0 3 0x14200 bored smr 57415 414105 0 0 2 0x14200 zerothread 17455 458928 0 0 3 0x14200 aiodoned aiodoned 66060 260771 0 0 3 0x14200 syncer update 26849 521184 0 0 3 0x14200 cleaner cleaner 56906 482044 0 0 3 0x14200 reaper reaper 10529 260011 0 0 3 0x14200 pgdaemon pagedaemon 58355 20756 0 0 3 0x14200 bored viomb 39575 184191 0 0 3 0x40014200 acpi0 acpi0 73666 109663 0 0 3 0x40014200 idle1 64494 293728 0 0 3 0x14200 bored softnet1 21782 56093 0 0 3 0x14200 bored softnet0 77020 172285 0 0 3 0x14200 bored systqmp 16251 481470 0 0 3 0x14200 bored systq 33098 443798 0 0 3 0x14200 tmoslp softclockmp 30501 520130 0 0 3 0x40014200 tmoslp softclock 51547 258399 0 0 3 0x40014200 idle0 1 457505 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 35786 (syz-executor) thread 0xffff80002a321a28 (442152) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83997f80) #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:783 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff800010fda850) #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:639 #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:783 #7 Xsyscall+0x128 Process 9919 (syz-executor) thread 0xffff80002a3202d0 (80519) exclusive rrwlock inode r = 0 (0xfffffd806a642d80) #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 vget+0x2a2 sys/kern/vfs_subr.c:686 #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+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806a642a08) #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11075 12103K 14018K 166960K 13133 0 pcb 17 16K 18K 166960K 237 0 rtable 209 10K 10K 166960K 533 0 pf 39 18K 21K 166960K 118 0 ifaddr 40 7K 7K 166960K 92 0 ifgroup 56 2K 3K 166960K 136 0 sysctl 4 1K 9K 166960K 12 0 counters 72 37K 38K 166960K 154 0 ioctlops 0 0K 4K 166960K 1626 0 iov 0 0K 16K 166960K 47 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1415 89K 90K 166960K 2015 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 14 0 VM map 2 1K 1K 166960K 2 0 sem 12 16K 16K 166960K 65 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 874 0 sigio 0 0K 0K 166960K 16 0 proc 72 115K 164K 166960K 683 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 135 0 in_multi 81 5K 6K 166960K 157 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 26 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 608 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 229 171K 223K 166960K 10011 0 UVM aobj 18 4K 4K 166960K 23 0 pinsyscall 45 90K 118K 166960K 2140 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 46 0 NDP 13 0K 1K 166960K 60 0 temp 58 9079K 9166K 166960K 36842 0 kqueue 13 20K 28K 166960K 136 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 83 0 78 1 0 1 1 0 8 0 rtentry 176 156 0 75 5 0 5 5 0 8 0 unpcb 144 590 0 570 5 1 4 4 0 8 3 syncache 336 10 0 10 3 3 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 328 0 323 13 9 4 7 0 8 3 arp 136 28 0 12 1 0 1 1 0 8 0 inpcb 328 1055 0 1046 20 11 9 9 0 8 7 nd6 152 29 0 12 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 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 32 0 32 2 1 1 1 0 8 1 pppxif 1504 6 0 6 1 1 0 1 0 8 0 pffrag 232 6 0 2 1 0 1 1 0 482 0 pffrnode 88 6 0 2 1 0 1 1 0 8 0 pffrent 40 11 0 7 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 3 0 1 1 0 1 1 0 8 0 pfsrclim 320 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 61 0 26 1 0 1 1 0 8 0 pfstkey 128 129 0 94 2 0 2 2 0 8 0 pfstate 448 94 0 60 5 0 5 5 0 8 0 pfrule 1360 24 0 18 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 690 0 345 29 7 22 28 0 8 0 art_table 40 693 0 345 5 0 5 5 0 8 0 art_node 32 155 0 84 1 0 1 1 0 8 0 sysvmsgpl 40 105 0 65 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 59 0 49 1 0 1 1 0 8 0 shmpl 112 19 0 5 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2937 0 1473 93 0 93 93 0 8 0 ffsino 296 2937 0 1473 114 0 114 114 0 8 0 nchpl 144 4153 0 2449 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 1 1 1 0 8 1 vnodes 216 3386 0 0 189 0 189 189 0 8 0 namei 1024 13512 0 13511 4 3 1 2 0 8 0 percpumem 16 92 0 41 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 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 84 0 54 4 1 3 3 0 8 1 scsiplug 72 7 0 7 3 3 0 1 0 8 0 scxspl 216 20998 0 20997 11 10 1 8 1 8 0 plimitpl 152 217 0 199 1 0 1 1 0 8 0 sigapl 424 1216 0 1148 9 0 9 9 0 8 0 knotepl 120 324 0 0 10 0 10 10 0 8 0 kqueuepl 224 323 0 312 8 7 1 7 0 8 0 pipepl 344 255 0 228 9 6 3 9 0 8 0 fdescpl 528 1176 0 1144 3 0 3 3 0 8 0 filepl 160 7054 0 6837 24 10 14 19 0 8 3 lockfpl 104 267 0 265 1 0 1 1 0 8 0 lockfspl 48 120 0 118 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 119 0 102 1 0 1 1 0 8 0 ucredpl 104 791 0 778 1 0 1 1 0 8 0 zombiepl 144 1455 0 1455 2 1 1 1 0 8 1 processpl 1232 1216 0 1148 6 0 6 6 0 8 0 procpl 664 2542 0 2468 8 0 8 8 0 8 0 sosppl 176 11 0 11 3 2 1 1 0 8 1 sockpl 752 1748 0 1714 26 13 13 13 0 8 8 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 130 0 0 17 0 17 17 0 8 1 mcl2k 2048 48 0 0 6 0 6 6 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1765 0 0 110 0 110 110 0 8 0 bufpl 280 7682 0 1553 438 0 438 438 0 8 0 anonpl 32 10240 0 0 83 0 83 83 0 246 0 amapchunkpl 152 31781 0 31362 35 10 25 29 0 158 4 amappl16 200 3740 0 3712 38 24 14 22 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 459 0 456 1 0 1 1 0 8 0 amappl13 176 144 0 130 1 0 1 1 0 8 0 amappl12 168 1441 0 1411 2 0 2 2 0 8 0 amappl11 160 11 0 10 2 1 1 1 0 8 0 amappl10 152 102 0 88 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 113 0 110 1 0 1 1 0 8 0 amappl7 128 165 0 150 1 0 1 1 0 8 0 amappl6 120 183 0 179 1 0 1 1 0 8 0 amappl5 112 112 0 101 1 0 1 1 0 8 0 amappl4 104 326 0 302 1 0 1 1 0 8 0 amappl3 96 6482 0 6379 4 0 4 4 0 8 0 amappl2 88 631 0 566 3 1 2 3 0 8 0 amappl1 80 15539 0 14884 28 10 18 24 0 8 0 amappl 88 9078 0 8932 5 0 5 5 0 92 0 uvmvnodes 80 119 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 7 0 7 2 2 0 1 0 8 0 dma128 128 255 0 255 3 3 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 22 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1176 0 1144 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1176 0 1144 1 0 1 1 0 8 0 vmmpekpl 168 11779 0 11727 3 0 3 3 0 8 0 vmmpepl 168 85580 0 83655 137 19 118 124 0 357 21 vmsppl 488 1175 0 1144 5 0 5 5 0 8 0 rwobjpl 80 26609 0 25469 41 8 33 36 0 8 0 pdppl 4096 2361 0 2289 129 53 76 88 0 8 4 pvpl 32 16810 0 0 136 0 136 136 0 265 0 pmappl 256 1176 0 1144 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 428 0 80 11 0 11 11 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(fffffd807399b228,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd807399b210,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd807399b210,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd806af75100,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd806af75100,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c400f80) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c400f80) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fda668,fffffd805f4fc300,ffff80002a321a28) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fda668,fffffd805e8f6700,fffffd805f4fc300,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fda668,fffffd805f4fc300,ffff80003c401208,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a321a28,5,ffff80003c401388,e,ffff80003c401440) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80002a321a28,ffff80003c4014f0,ffff80003c401440) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c4014f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4014f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa05c8b5ac80, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299adff0) 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(ffffffff83997780) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83997780) at __mp_lock+0x192 sys/kern/kern_lock.c:173 end trace frame: 0x0, count: -4