witness: lock order reversal: 1st 0xffff80000164a520 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806e7e6208 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff834add8a -> 0xffffffff834204e3 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(fffffd806e7e6208,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e7e61f0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e7e61f0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8060418898,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd8060418898,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c4294f0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c4294f0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff80000164a338,fffffd806c206400,ffff80003bfd9248) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff80000164a338,fffffd806c206900,fffffd806c206400,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff80000164a338,fffffd806c206400,ffff80003c429778,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003bfd9248,4,ffff80003c4298f8,e,ffff80003c4299b0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003bfd9248,ffff80003c429a60,ffff80003c4299b0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c429a60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c429a60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ad55817a70, count: -15 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c429160 rbx 0 rdx 0xffff8000015f2ac0 rcx 0xffff80003bfd9248 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c429040 r9 0x8080808080808080 r10 0x39d8f00187172a4f r11 0x8807cb9482bb0691 r12 0xfffffd800403c8c0 r13 0xfffffd8004824ac0 r14 0x3 r15 0xffffffff834b5424 substchar+0xb7c1 rip 0xffffffff8229bed5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c429150 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=327851 pid=93160 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003bfd8020,0xffff80003bfd8d28 process=0xffff80002a39eb68 user=0xffff80003c424000, vmspace=0xfffffd806c8fd200 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 75357 438977 97003 0 7 0 syz-executor 75357 432003 97003 0 2 0x4000000 syz-executor 16318 381578 29264 0 2 0x10 syz-executor 16318 331580 29264 0 3 0x4000090 fsleep syz-executor 23803 219612 14147 60929 2 0x10 syz-executor 23803 360198 14147 60929 3 0x4000090 fsleep syz-executor 23803 334020 14147 60929 3 0x4000090 fsleep syz-executor 15450 47794 56862 0 2 0 syz-executor 15450 13205 56862 0 2 0x4000000 syz-executor 10012 295437 77512 0 2 0 syz-executor 10012 182635 77512 0 3 0x4000080 fsleep syz-executor 33867 145444 80571 0 2 0 syz-executor 33867 457360 80571 0 3 0x4000080 pipewr syz-executor 33867 482244 80571 0 3 0x4000080 fsleep syz-executor 93160 237638 58419 60929 2 0x10 syz-executor *93160 327851 58419 60929 7 0x4000010 syz-executor 14147 80576 76107 0 3 0x82 nanoslp syz-executor 2469 437232 0 0 3 0x14200 acct acct 56862 29944 76107 0 3 0x82 nanoslp syz-executor 58419 217696 76107 0 3 0x82 nanoslp syz-executor 80571 132330 76107 0 3 0x82 nanoslp syz-executor 29264 332803 76107 0 3 0x82 nanoslp syz-executor 77512 341478 76107 0 3 0x82 nanoslp syz-executor 27150 222879 76107 0 3 0x2 biowait syz-executor 97003 106900 76107 0 3 0x82 nanoslp syz-executor 76107 426061 3844 0 3 0x82 kqread syz-executor 3844 157808 32002 0 3 0x10008a sigsusp ksh 32002 9111 85611 0 3 0x98 kqread sshd-session 85611 2073 73436 0 3 0x92 kqread sshd-session 45104 268809 1 0 3 0x100083 ttyopn getty 73436 271712 1 0 3 0x88 kqread sshd 11820 500736 42685 74 3 0x1100092 bpf pflogd 42685 472555 1 0 3 0x80 sbwait pflogd 1587 439483 61132 73 3 0x1100090 kqread syslogd 61132 101620 1 0 3 0x100082 sbwait syslogd 27062 61012 1 0 3 0x100080 kqread resolvd 27572 102374 52996 77 3 0x100092 kqread dhcpleased 67588 75745 52996 77 3 0x100092 kqread dhcpleased 52996 295826 1 0 3 0x80 kqread dhcpleased 23527 322253 0 0 3 0x14200 bored smr 50854 158082 0 0 2 0x14200 zerothread 38560 513826 0 0 3 0x14200 aiodoned aiodoned 83200 316784 0 0 3 0x14200 syncer update 70728 413154 0 0 3 0x14200 cleaner cleaner 45176 32615 0 0 3 0x14200 reaper reaper 48003 166364 0 0 3 0x14200 pgdaemon pagedaemon 36840 505374 0 0 3 0x14200 bored viomb 85805 202723 0 0 3 0x40014200 acpi0 acpi0 61530 94720 0 0 3 0x40014200 idle1 35836 478872 0 0 3 0x14200 bored softnet1 71072 423596 0 0 3 0x14200 bored softnet0 53377 439203 0 0 3 0x14200 bored systqmp 93430 278361 0 0 3 0x14200 bored systq 54834 344928 0 0 3 0x14200 tmoslp softclockmp 74594 337008 0 0 3 0x40014200 tmoslp softclock 11013 210812 0 0 3 0x40014200 idle0 1 359464 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 93160 (syz-executor) thread 0xffff80003bfd9248 (327851) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839ad400) #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 (0xffff80000164a520) #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 27150 (syz-executor) thread 0xffff80002a2422a8 (222879) exclusive rrwlock inode r = 0 (0xfffffd80783347b8) #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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3143 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806d6dcc40) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3128 #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 11099 12285K 12351K 166960K 13008 0 pcb 17 14K 15K 166960K 78 0 rtable 243 9K 10K 166960K 480 0 pf 35 17K 23K 166960K 131 0 ifaddr 43 7K 7K 166960K 67 0 ifgroup 55 2K 2K 166960K 105 0 sysctl 4 1K 9K 166960K 10 0 counters 70 37K 38K 166960K 176 0 ioctlops 0 0K 4K 166960K 1650 0 iov 0 0K 12K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1391 87K 88K 166960K 1839 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 507 0 sigio 0 0K 0K 166960K 8 0 proc 72 115K 180K 166960K 617 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 49 0 in_multi 96 7K 7K 166960K 114 0 ether_multi 1 0K 0K 166960K 3 0 mrt 2 0K 0K 166960K 21 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 0 0K 1K 166960K 420 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 232 167K 184K 166960K 6376 0 UVM aobj 12 4K 4K 166960K 13 0 pinsyscall 42 84K 102K 166960K 1680 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 19 0 NDP 14 0K 1K 166960K 46 0 temp 48 9080K 9192K 166960K 15059 0 kqueue 13 20K 29K 166960K 95 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 120 113 0 110 2 0 2 2 0 8 1 rtentry 176 136 0 32 6 0 6 6 0 8 0 unpcb 144 291 0 269 4 0 4 4 0 8 3 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 213 0 208 7 0 7 7 0 8 6 arp 136 25 0 5 1 0 1 1 0 8 0 inpcb 328 676 0 664 7 0 7 7 0 8 5 nd6 152 28 0 3 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 46 0 46 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 4 0 0 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 5 0 1 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 13 0 13 1 0 1 1 0 8 1 pfanchor 1288 4 0 4 1 0 1 1 0 8 1 pfstitem 24 43 0 5 1 0 1 1 0 8 0 pfstkey 128 46 0 8 2 0 2 2 0 8 0 pfstate 448 45 0 7 5 0 5 5 0 8 0 pfrule 1360 28 0 23 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 515 0 90 29 1 28 29 0 8 1 art_table 40 518 0 90 5 0 5 5 0 8 0 art_node 32 136 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 9 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2288 0 823 93 0 93 93 0 8 0 ffsino 296 2288 0 823 114 0 114 114 0 8 0 nchpl 144 2996 0 1297 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 vnodes 216 2697 0 0 150 0 150 150 0 8 0 namei 1024 10314 0 10312 2 1 1 2 0 8 0 percpumem 16 103 0 53 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 4 0 4 1 0 1 1 0 8 1 kstatmem 264 58 0 32 3 0 3 3 0 8 1 scxspl 216 12693 0 12692 11 3 8 8 1 8 7 plimitpl 152 148 0 131 1 0 1 1 0 8 0 sigapl 424 820 0 772 6 0 6 6 0 8 0 knotepl 120 371 0 0 12 0 12 12 0 8 0 kqueuepl 224 200 0 191 5 0 5 5 0 8 4 pipepl 344 226 0 198 9 0 9 9 0 8 6 fdescpl 528 803 0 772 3 0 3 3 0 8 0 filepl 160 4986 0 4765 15 0 15 15 0 8 4 lockfpl 104 198 0 196 2 1 1 2 0 8 0 lockfspl 48 91 0 89 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 650 0 634 1 0 1 1 0 8 0 zombiepl 144 772 0 772 1 0 1 1 0 8 1 processpl 1232 820 0 772 5 1 4 5 0 8 0 procpl 664 1467 0 1410 6 0 6 6 0 8 0 sosppl 176 4 0 4 1 0 1 1 0 8 1 sockpl 752 1095 0 1058 12 1 11 12 0 8 7 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 131 0 0 17 0 17 17 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1186 0 0 74 0 74 74 0 8 0 bufpl 280 5045 0 171 349 0 349 349 0 8 0 anonpl 32 11640 0 0 94 0 94 94 0 246 0 amapchunkpl 152 19746 0 19275 28 1 27 28 0 158 6 amappl16 200 2523 0 2489 32 17 15 27 0 8 9 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 440 0 438 1 0 1 1 0 8 0 amappl13 176 123 0 111 1 0 1 1 0 8 0 amappl12 168 1058 0 1027 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 68 0 53 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 102 0 100 1 0 1 1 0 8 0 amappl7 128 147 0 134 1 0 1 1 0 8 0 amappl6 120 176 0 175 1 0 1 1 0 8 0 amappl5 112 91 0 81 1 0 1 1 0 8 0 amappl4 104 290 0 269 1 0 1 1 0 8 0 amappl3 96 3893 0 3781 4 0 4 4 0 8 0 amappl2 88 537 0 475 2 0 2 2 0 8 0 amappl1 80 11421 0 10821 16 0 16 16 0 8 2 amappl 88 5566 0 5406 5 0 5 5 0 92 0 uvmvnodes 80 109 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 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 12 0 1 1 0 1 1 0 8 0 uaddrrnd 24 803 0 772 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 803 0 772 1 0 1 1 0 8 0 vmmpekpl 168 8634 0 8588 3 0 3 3 0 8 0 vmmpepl 168 58161 0 56245 107 2 105 107 0 357 12 vmsppl 488 802 0 772 5 0 5 5 0 8 0 rwobjpl 80 18611 0 17565 32 1 31 32 0 8 4 pdppl 4096 1615 0 1545 101 27 74 81 0 8 4 pvpl 32 19272 0 0 156 0 156 156 0 265 0 pmappl 256 803 0 772 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 350 0 33 10 0 10 10 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(fffffd806e7e6208,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e7e61f0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e7e61f0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd8060418898,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd8060418898,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c4294f0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c4294f0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff80000164a338,fffffd806c206400,ffff80003bfd9248) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff80000164a338,fffffd806c206900,fffffd806c206400,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff80000164a338,fffffd806c206400,ffff80003c429778,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003bfd9248,4,ffff80003c4298f8,e,ffff80003c4299b0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003bfd9248,ffff80003c429a60,ffff80003c4299b0) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c429a60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c429a60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ad55817a70, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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(ffffffff839acc00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff839acc00) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff8000333b1bf0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff8000333b1bf0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e374711e710, count: -6