witness: lock order reversal: 1st 0xffff800001550258 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd807747ab70 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff8340cb6d -> 0xffffffff8337ffd2 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:878 #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:765 #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:1335 #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:765 #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(fffffd807747ab70,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd807747ab58,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd807747ab58,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805dfb9c10,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805dfb9c10,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c4208a0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c4208a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800001550070,fffffd8069fee600,ffff80002a271240) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800001550070,fffffd800eb8c400,fffffd8069fee600,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800001550070,fffffd8069fee600,ffff80003c420b28,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a271240,6,ffff80003c420ca8,e,ffff80003c420d60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80002a271240,ffff80003c420e10,ffff80003c420d60) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c420e10) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c420e10) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1001f4740a00, count: -15 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c420520 rbx 0 rdx 0xffff800001477880 rcx 0xffff80002a271240 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c420400 r9 0x8080808080808080 r10 0xc1800443f7723c6 r11 0xa71c780030bb090 r12 0xfffffd8003f458c0 r13 0xfffffd800472c938 r14 0x3 r15 0xffffffff834145c3 substchar+0x7bc8 rip 0xffffffff82bb41e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c420510 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=7401 pid=40245 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=0xffff8000fffe8020,0xffffffff838b87c8 process=0xffff8000ffff44d8 user=0xffff80003c41b000, vmspace=0xfffffd806cadb5d0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80373 353375 34619 0 7 0 syz-executor 40245 350796 22891 0 2 0 syz-executor *40245 7401 22891 0 7 0x4000000 syz-executor 91094 333035 59182 0 2 0 syz-executor 91094 405697 59182 0 3 0x4000080 fsleep syz-executor 79388 516007 5350 0 2 0 syz-executor 79388 507502 5350 0 3 0x4000080 sbwait syz-executor 45788 223970 9468 0 2 0 syz-executor 45788 206000 9468 0 3 0x4000080 fsleep syz-executor 45788 497761 9468 0 3 0x4000080 fsleep syz-executor 87861 467784 31687 60929 3 0x90 nanoslp syz-executor 87861 419828 31687 60929 3 0x4000090 netacc syz-executor 87861 44262 31687 60929 3 0x4000090 fsleep syz-executor 67751 415914 14950 60928 2 0x10 syz-executor 67751 58804 14950 60928 2 0x4000010 syz-executor 67751 45971 14950 60928 3 0x4000090 fsleep syz-executor 31687 135118 32443 0 3 0x82 nanoslp syz-executor 74042 282169 1 0 3 0x100083 ttyopn getty 52944 455952 0 0 3 0x14280 nfsidl nfsio 24465 463960 0 0 3 0x14280 nfsidl nfsio 6926 372855 0 0 3 0x14280 nfsidl nfsio 99865 81513 0 0 3 0x14280 nfsidl nfsio 34090 351373 0 0 3 0x14280 nfsidl nfsio 41604 230168 0 0 3 0x14280 nfsidl nfsio 5966 459060 0 0 3 0x14280 nfsidl nfsio 4118 179164 0 0 3 0x14280 nfsidl nfsio 47628 305987 0 0 3 0x14280 nfsidl nfsio 28142 192053 0 0 3 0x14280 nfsidl nfsio 52854 496744 0 0 3 0x14280 nfsidl nfsio 47561 257646 0 0 3 0x14280 nfsidl nfsio 12488 121678 0 0 3 0x14280 nfsidl nfsio 44088 438238 0 0 3 0x14280 nfsidl nfsio 81732 98487 0 0 3 0x14280 nfsidl nfsio 399 413865 0 0 3 0x14280 nfsidl nfsio 36496 328882 0 0 3 0x14280 nfsidl nfsio 93170 336110 0 0 3 0x14280 nfsidl nfsio 91935 496859 0 0 3 0x14280 nfsidl nfsio 94357 20921 0 0 3 0x14280 nfsidl nfsio 5350 408275 32443 0 3 0x82 nanoslp syz-executor 89381 401586 0 0 3 0x14200 acct acct 50647 91891 62661 0 3 0x100082 sbwait arp 62661 397353 7443 0 3 0x10008a sigsusp sh 59182 20485 32443 0 3 0x82 nanoslp syz-executor 34619 412798 32443 0 3 0x82 nanoslp syz-executor 22891 293656 32443 0 3 0x82 nanoslp syz-executor 9468 159067 32443 0 3 0x82 nanoslp syz-executor 14950 508068 32443 0 3 0x82 nanoslp syz-executor 7443 167488 32443 0 3 0x82 wait syz-executor 32443 502282 16270 0 3 0x82 kqread syz-executor 16270 463684 27595 0 3 0x10008a sigsusp ksh 27595 430815 22825 0 3 0x98 kqread sshd-session 22825 196901 60703 0 3 0x92 kqread sshd-session 60703 145763 1 0 3 0x88 kqread sshd 95566 287841 48758 74 3 0x1100092 bpf pflogd 48758 489148 1 0 3 0x80 sbwait pflogd 8432 520305 96164 73 3 0x1100090 kqread syslogd 96164 211891 1 0 3 0x100082 sbwait syslogd 30970 14342 1 0 3 0x100080 kqread resolvd 52901 522841 79953 77 3 0x100092 kqread dhcpleased 21478 173890 79953 77 3 0x100092 kqread dhcpleased 79953 354364 1 0 3 0x80 kqread dhcpleased 73851 469301 0 0 3 0x14200 bored smr 23486 227496 0 0 2 0x14200 zerothread 28569 269012 0 0 3 0x14200 aiodoned aiodoned 17213 493164 0 0 3 0x14200 syncer update 8887 434626 0 0 3 0x14200 cleaner cleaner 35461 499728 0 0 3 0x14200 reaper reaper 11371 121853 0 0 3 0x14200 pgdaemon pagedaemon 44797 78788 0 0 3 0x14200 bored viomb 21226 203394 0 0 3 0x40014200 acpi0 acpi0 10487 414767 0 0 3 0x40014200 idle1 85876 61707 0 0 3 0x14200 bored softnet1 59971 409808 0 0 3 0x14200 bored softnet0 28684 117792 0 0 3 0x14200 bored systqmp 76627 91075 0 0 3 0x14200 bored systq 96563 255384 0 0 3 0x14200 tmoslp softclockmp 61610 12715 0 0 3 0x40014200 tmoslp softclock 76799 44887 0 0 3 0x40014200 idle0 1 62387 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 40245 (syz-executor) thread 0xffff80002a271240 (7401) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a0a408) #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:765 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff800001550258) #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:765 #7 Xsyscall+0x128 Process 79388 (syz-executor) thread 0xffff80003c4342c8 (507502) exclusive rwlock sbufrcv r = 0 (0xffff800001551300) #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 soreceive+0x27d sys/kern/uipc_socket.c:878 #4 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #5 sys_recvfrom+0x109 sys/kern/uipc_syscalls.c:844 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10253 11117K 11362K 166960K 13019 0 pcb 18 14K 15K 166960K 281 0 rtable 157 8K 9K 166960K 589 0 pf 38 18K 18K 166960K 140 0 ifaddr 31 4K 7K 166960K 107 0 ifgroup 60 2K 2K 166960K 177 0 sysctl 4 1K 9K 166960K 10 0 counters 70 37K 38K 166960K 262 0 ioctlops 0 0K 4K 166960K 1677 0 iov 0 0K 12K 166960K 49 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1424 90K 90K 166960K 2397 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 31 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 114K 166960K 1089 0 sigio 0 0K 0K 166960K 24 0 proc 72 115K 180K 166960K 682 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 243 0 in_multi 47 3K 6K 166960K 153 0 ether_multi 1 0K 0K 166960K 10 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 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 482 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 170K 191K 166960K 11717 0 UVM aobj 30 14K 14K 166960K 33 0 pinsyscall 45 90K 104K 166960K 2256 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 72 0 temp 56 8671K 9259K 166960K 51962 0 kqueue 13 20K 28K 166960K 192 0 SYN cache 2 8K 16K 166960K 3 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 120 169 0 164 3 2 1 3 0 8 0 rtentry 176 183 0 127 5 0 5 5 0 8 0 unpcb 144 475 0 450 3 1 2 2 0 8 1 syncache 336 5 0 5 3 2 1 1 0 8 1 tcpcb 736 365 0 294 10 3 7 7 0 8 0 arp 136 24 0 12 1 0 1 1 0 8 0 inpcb 328 1109 0 1033 10 3 7 7 0 8 0 nd6 152 28 0 16 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1192 82 0 82 1 0 1 1 0 8 1 pppxif 1504 7 0 7 3 2 1 1 0 8 1 pffrag 232 40 0 33 1 0 1 1 0 482 0 pffrnode 88 39 0 32 1 0 1 1 0 8 0 pffrent 40 75 0 68 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 2 0 2 2 2 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 75 0 21 1 0 1 1 0 8 0 pfstkey 128 75 0 21 2 0 2 2 0 8 0 pfstate 448 75 0 21 7 0 7 7 0 8 0 pfrule 1344 29 0 21 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 878 0 650 36 17 19 36 0 8 3 art_table 40 880 0 650 6 0 6 6 0 8 0 art_node 32 183 0 133 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 7 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 21 0 0 1 0 1 1 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3338 0 1829 95 0 95 95 0 8 0 ffsino 296 3338 0 1829 117 0 117 117 0 8 0 nchpl 144 4845 0 3142 64 0 64 64 0 8 0 rtmask 32 8 0 8 3 2 1 1 0 8 1 vnodes 216 4129 0 0 230 0 230 230 0 8 0 namei 1024 16727 0 16726 1 0 1 1 0 8 0 percpumem 16 146 0 96 1 0 1 1 0 8 0 vcpupl 3968 7 0 1 1 0 1 1 0 8 0 vmpool 840 9 0 3 1 0 1 1 0 8 0 kstatmem 264 114 0 82 4 1 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 5 0 5 3 2 1 1 0 8 1 scxspl 216 30598 0 30598 11 9 2 8 1 8 2 plimitpl 152 308 0 290 1 0 1 1 0 8 0 sigapl 424 1403 0 1333 8 0 8 8 0 8 0 knotepl 120 578 0 0 18 0 18 18 0 8 0 kqueuepl 224 510 0 501 8 6 2 5 0 8 1 pipepl 344 255 0 228 3 0 3 3 0 8 0 fdescpl 528 1366 0 1333 3 0 3 3 0 8 0 filepl 160 8521 0 8162 19 3 16 16 0 8 1 lockfpl 104 814 0 812 6 4 2 4 0 8 1 lockfspl 48 259 0 257 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 57 0 40 1 0 1 1 0 8 0 ucredpl 104 1004 0 988 1 0 1 1 0 8 0 zombiepl 144 1333 0 1333 1 0 1 1 0 8 1 processpl 1232 1403 0 1333 6 0 6 6 0 8 0 procpl 664 2947 0 2868 8 1 7 8 0 8 0 sosppl 176 1 0 1 1 1 0 1 0 8 0 sockpl 752 1887 0 1780 15 4 11 11 0 8 0 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 49 0 0 7 0 7 7 0 8 0 mtagpl 96 100 0 0 3 0 3 3 0 8 0 mbufpl 256 1239 0 0 77 0 77 77 0 8 0 bufpl 280 12165 0 6028 439 0 439 439 0 8 0 anonpl 32 11935 0 0 97 0 97 97 0 246 0 amapchunkpl 152 58862 0 58407 37 10 27 36 0 158 3 amappl16 200 4984 0 4950 34 20 14 27 0 8 7 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 37 0 37 1 1 0 1 0 8 0 amappl13 176 447 0 444 1 0 1 1 0 8 0 amappl12 168 1757 0 1713 3 0 3 3 0 8 0 amappl11 160 7 0 7 2 2 0 1 0 8 0 amappl10 152 91 0 77 1 0 1 1 0 8 0 amappl9 144 248 0 247 1 0 1 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 107 0 105 1 0 1 1 0 8 0 amappl6 120 305 0 289 1 0 1 1 0 8 0 amappl5 112 80 0 69 1 0 1 1 0 8 0 amappl4 104 435 0 401 1 0 1 1 0 8 0 amappl3 96 6735 0 6649 4 1 3 3 0 8 0 amappl2 88 1495 0 1418 2 0 2 2 0 8 0 amappl1 80 13557 0 12935 15 0 15 15 0 8 0 amappl 88 10789 0 10632 5 0 5 5 0 92 0 uvmvnodes 80 133 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 8 0 8 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 32 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1366 0 1333 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1366 0 1333 1 0 1 1 0 8 0 vmmpekpl 168 12485 0 12445 4 1 3 3 0 8 0 vmmpepl 168 93306 0 91319 109 10 99 109 0 357 5 vmsppl 488 1365 0 1333 5 0 5 5 0 8 0 rwobjpl 80 27039 0 25916 33 4 29 33 0 8 0 pdppl 4096 2757 0 2678 112 31 81 85 0 8 2 pvpl 32 21560 0 0 175 1 174 174 0 265 0 pmappl 256 1374 0 1336 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 376 0 55 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(fffffd807747ab70,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd807747ab58,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd807747ab58,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805dfb9c10,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805dfb9c10,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c4208a0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c4208a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800001550070,fffffd8069fee600,ffff80002a271240) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800001550070,fffffd800eb8c400,fffffd8069fee600,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800001550070,fffffd8069fee600,ffff80003c420b28,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a271240,6,ffff80003c420ca8,e,ffff80003c420d60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80002a271240,ffff80003c420e10,ffff80003c420d60) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c420e10) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c420e10) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1001f4740a00, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(ffffffff83a0a200) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83a0a200) at __mp_lock+0x192 sys/kern/kern_lock.c:165 end trace frame: 0x0, count: -4