witness: lock order reversal: 1st 0xffff800001637450 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806e07fd60 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff833d32bf -> 0xffffffff8334590b 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:870 #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+0xdfb 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:746 #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+0x3e1 sys/kern/uipc_socket.c:1347 #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:746 #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(fffffd806e07fd60,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e07fd48,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e07fd48,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805e65d3a0,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805e65d3a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c41b080) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c41b080) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800001637268,fffffd805ff66700,ffff8000357eed20) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800001637268,fffffd8067b64e00,fffffd805ff66700,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800001637268,fffffd805ff66700,ffff80003c41b308,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000357eed20,3,ffff80003c41b488,e,ffff80003c41b540) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff8000357eed20,ffff80003c41b5f0,ffff80003c41b540) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c41b5f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41b5f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x739e6c540e0, count: -15 ddb{0}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c41ad00 rbx 0 rdx 0xffff800001487200 rcx 0xffff8000357eed20 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c41abe0 r9 0x8080808080808080 r10 0xba4b7703a725158b r11 0x8dfeb8e086105d94 r12 0xfffffd8003eff680 r13 0xfffffd80046e7f00 r14 0x3 r15 0xffffffff833e2b64 substchar+0xf1da rip 0xffffffff831577a5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c41acf0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=104570 pid=86512 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000357efa18,0xffff8000357efcc0 process=0xffff8000357f3040 user=0xffff80003c416000, vmspace=0xfffffd80631deb98 estcpu=36, cpticks=17, pctcpu=0.0, user=0, sys=17, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 29100 358859 36106 0 2 0 syz-executor 29100 210532 36106 0 3 0x4000080 netcon syz-executor 81117 259963 58857 0 2 0 syz-executor 12880 147245 98033 0 2 0 syz-executor 12880 467228 98033 0 3 0x4000080 fsleep syz-executor 12880 467225 98033 0 3 0x4000080 fsleep syz-executor 86512 185116 17343 0 2 0 syz-executor *86512 104570 17343 0 7 0x4000000 syz-executor 86512 480909 17343 0 3 0x4000080 fsleep syz-executor 9015 15174 0 0 3 0x14200 acct acct 15395 330007 3350 0 3 0x80 nanoslp syz-executor 15395 356219 3350 0 3 0x4000080 sbwait syz-executor 15395 419731 3350 0 3 0x4000080 fsleep syz-executor 15395 254893 3350 0 3 0x4000080 fsleep syz-executor 26289 452873 43978 0 2 0 syz-executor 26289 424602 43978 0 3 0x4000080 lockf syz-executor 26289 386299 43978 0 3 0x4000080 fsleep syz-executor 58857 138970 66091 0 3 0x82 nanoslp syz-executor 15877 335043 66091 0 3 0x2 biowait syz-executor 69780 160468 1 0 3 0x100083 ttyopn getty 34496 80960 0 0 3 0x14200 bored sosplice 36106 377016 66091 0 3 0x82 nanoslp syz-executor 17343 308172 66091 0 3 0x82 nanoslp syz-executor 98033 82301 66091 0 3 0x82 nanoslp syz-executor 43978 105109 66091 0 2 0x2 syz-executor 3350 5784 66091 0 3 0x82 nanoslp syz-executor 75181 58548 66091 0 7 0x3 syz-executor 66091 344342 70826 0 2 0x2 syz-executor 70826 256537 72374 0 3 0x10008a sigsusp ksh 72374 118057 18402 0 3 0x98 kqread sshd-session 18402 240653 49255 0 3 0x92 kqread sshd-session 49255 479286 1 0 3 0x88 kqread sshd 47704 26112 75661 74 3 0x1100092 bpf pflogd 75661 130440 1 0 3 0x80 sbwait pflogd 98730 164784 3389 73 3 0x1100090 kqread syslogd 3389 36588 1 0 3 0x100082 sbwait syslogd 71077 381169 1 0 3 0x100080 kqread resolvd 1253 12775 87361 77 3 0x100092 kqread dhcpleased 42818 72214 87361 77 3 0x100092 kqread dhcpleased 87361 456734 1 0 3 0x80 kqread dhcpleased 51148 164267 0 0 3 0x14200 bored smr 42284 197704 0 0 2 0x14200 zerothread 57152 448300 0 0 3 0x14200 aiodoned aiodoned 44251 402796 0 0 3 0x14200 syncer update 4044 17878 0 0 3 0x14200 cleaner cleaner 40073 383906 0 0 3 0x14200 reaper reaper 89410 27343 0 0 3 0x14200 pgdaemon pagedaemon 48269 302505 0 0 3 0x14200 bored viomb 6161 414959 0 0 3 0x40014200 acpi0 acpi0 60710 141222 0 0 3 0x40014200 idle1 65767 8315 0 0 3 0x14200 bored softnet1 46154 470496 0 0 3 0x14200 bored softnet0 65177 16906 0 0 3 0x14200 bored systqmp 48235 83721 0 0 3 0x14200 bored systq 10156 437132 0 0 3 0x14200 tmoslp softclockmp 82598 151291 0 0 3 0x40014200 tmoslp softclock 49996 76841 0 0 3 0x40014200 idle0 1 219214 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 86512 (syz-executor) thread 0xffff8000357eed20 (104570) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83915fc0) #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:746 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff800001637450) #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:631 #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:746 #7 Xsyscall+0x128 Process 15877 (syz-executor) thread 0xffff8000fffef240 (335043) exclusive rrwlock inode r = 0 (0xfffffd806bd487c8) #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+0xa3 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:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8072f86368) #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+0xa3 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:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10240 11043K 12325K 166960K 13479 0 pcb 17 14K 22K 166960K 360 0 rtable 246 11K 11K 166960K 547 0 pf 39 18K 19K 166960K 168 0 ifaddr 47 8K 9K 166960K 129 0 ifgroup 63 2K 2K 166960K 207 0 sysctl 4 1K 9K 166960K 18 0 counters 72 37K 38K 166960K 234 0 ioctlops 0 0K 4K 166960K 1701 0 iov 0 0K 28K 166960K 207 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1467 92K 93K 166960K 2647 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 52 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 236K 166960K 1471 0 sigio 0 0K 0K 166960K 88 0 proc 72 115K 147K 166960K 799 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 208 0 in_multi 98 7K 7K 166960K 205 0 ether_multi 1 0K 0K 166960K 20 0 mrt 1 0K 0K 166960K 14 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 897 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 231 167K 185K 166960K 14935 0 UVM aobj 8 2K 2K 166960K 9 0 pinsyscall 41 82K 102K 166960K 2655 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 78 0 NDP 16 0K 2K 166960K 87 0 temp 79 8656K 8783K 166960K 74495 0 kqueue 13 20K 30K 166960K 248 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 120 143 0 139 1 0 1 1 0 8 0 rtentry 176 184 0 84 5 0 5 5 0 8 0 unpcb 144 917 0 897 10 8 2 6 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 404 0 396 9 2 7 7 0 8 6 arp 136 22 0 7 1 0 1 1 0 8 0 inpcb 328 1599 0 1586 15 8 7 7 0 8 5 nd6 152 30 0 8 1 0 1 1 0 8 0 pkpcb 40 74 0 74 3 2 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 63 0 63 1 0 1 1 0 8 1 pppxif 1504 11 0 11 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 6 0 0 1 0 1 1 0 482 0 pffrnode 88 6 0 0 1 0 1 1 0 8 0 pffrent 40 18 0 10 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 pfstitem 24 105 0 28 1 0 1 1 0 8 0 pfstkey 128 107 0 30 3 0 3 3 0 8 0 pfstate 384 106 0 29 8 0 8 8 0 8 0 pfrule 1344 23 0 17 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 865 0 421 33 3 30 30 0 8 2 art_table 40 868 0 421 5 0 5 5 0 8 0 art_node 32 179 0 93 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 10 1 0 1 1 0 8 0 semupl 112 5 0 5 3 2 1 1 0 8 1 semapl 112 48 0 38 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 dirhash 1024 40 0 23 3 0 3 3 0 8 0 dino2pl 256 3929 0 2413 96 0 96 96 0 8 1 ffsino 296 3929 0 2413 117 0 117 117 0 8 0 nchpl 144 5944 0 4244 64 0 64 64 0 8 0 rtmask 32 8 0 8 3 3 0 1 0 8 0 uvmvnodes 80 4157 0 0 85 0 85 85 0 8 0 vnodes 216 4157 0 0 231 0 231 231 0 8 0 namei 1024 21282 0 21280 3 2 1 2 0 8 0 percpumem 16 132 0 81 1 0 1 1 0 8 0 kstatmem 264 128 0 96 3 0 3 3 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 33171 0 33170 16 8 8 8 1 8 7 plimitpl 152 439 0 419 1 0 1 1 0 8 0 sigapl 424 1752 0 1704 7 1 6 7 0 8 0 knotepl 120 556 0 0 17 0 17 17 0 8 0 kqueuepl 224 497 0 488 5 2 3 3 0 8 2 pipepl 344 243 0 216 3 0 3 3 0 8 0 fdescpl 528 1725 0 1695 3 0 3 3 0 8 0 filepl 160 11248 0 11024 20 5 15 15 0 8 3 lockfpl 104 668 0 664 1 0 1 1 0 8 0 lockfspl 48 254 0 251 1 0 1 1 0 8 0 sessionpl 144 28 0 19 1 0 1 1 0 8 0 pgrppl 48 222 0 205 1 0 1 1 0 8 0 ucredpl 104 1533 0 1520 1 0 1 1 0 8 0 zombiepl 144 1813 0 1813 1 0 1 1 0 8 1 processpl 1232 1752 0 1704 5 0 5 5 0 8 0 procpl 664 3971 0 3913 6 0 6 6 0 8 0 sosppl 168 12 0 12 4 3 1 1 0 8 1 sockpl 752 2792 0 2755 33 22 11 16 0 8 7 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 46 0 0 5 0 5 5 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 264 0 0 15 0 15 15 0 8 0 bufpl 280 15979 0 9836 439 0 439 439 0 8 0 anonpl 32 11844 0 0 96 0 96 96 0 246 0 amapchunkpl 152 49887 0 49422 42 13 29 31 0 158 9 amappl16 200 7205 0 7169 74 60 14 28 0 8 8 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 123 0 111 1 0 1 1 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 2446 0 2416 4 2 2 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 19 0 19 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 120 0 107 1 0 1 1 0 8 0 amappl6 120 216 0 213 1 0 1 1 0 8 0 amappl5 112 144 0 134 1 0 1 1 0 8 0 amappl4 104 308 0 285 1 0 1 1 0 8 0 amappl3 96 8793 0 8699 4 1 3 3 0 8 0 amappl2 88 1972 0 1894 2 0 2 2 0 8 0 amappl1 80 13792 0 13193 14 0 14 14 0 8 0 amappl 88 13969 0 13811 5 0 5 5 0 92 0 dma8192 8192 1 0 1 1 1 0 1 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 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 8 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1725 0 1695 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1725 0 1695 1 0 1 1 0 8 0 vmmpekpl 168 14637 0 14592 3 0 3 3 0 8 0 vmmpepl 168 113390 0 111419 127 13 114 114 0 357 16 vmsppl 488 1724 0 1695 6 1 5 5 0 8 0 rwobjpl 80 36075 0 30967 110 4 106 106 0 8 0 pdppl 4096 3458 0 3390 116 42 74 84 0 8 6 pvpl 32 20285 0 0 164 0 164 164 0 265 0 pmappl 256 1724 0 1695 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 312 0 54 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(fffffd806e07fd60,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806e07fd48,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806e07fd48,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805e65d3a0,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805e65d3a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c41b080) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c41b080) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800001637268,fffffd805ff66700,ffff8000357eed20) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800001637268,fffffd8067b64e00,fffffd805ff66700,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800001637268,fffffd805ff66700,ffff80003c41b308,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000357eed20,3,ffff80003c41b488,e,ffff80003c41b540) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff8000357eed20,ffff80003c41b5f0,ffff80003c41b540) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c41b5f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41b5f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x739e6c540e0, 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(ffffffff83915db8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83915db8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrsyscall(ffff80002a272a70,63,18,ffff80002a2f87b0) at ktrsyscall+0x2c7 ktrwrite sys/kern/kern_ktrace.c:-1 [inline] ktrsyscall(ffff80002a272a70,63,18,ffff80002a2f87b0) at ktrsyscall+0x2c7 sys/kern/kern_ktrace.c:183 syscall(ffff80002a2f87b0) at syscall+0x304 mi_syscall sys/sys/syscall_mi.h:154 [inline] syscall(ffff80002a2f87b0) at syscall+0x304 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6f8c4af59c70, count: -7