witness: lock order reversal: 1st 0xffff80000149c7e0 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806c930580 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff834026aa -> 0xffffffff83375004 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+0xdf9 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(fffffd806c930580,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806c930568,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806c930568,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd80604367a0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd80604367a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c45f870) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c45f870) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff80000149c5f8,fffffd80661af700,ffff80003c408a80) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff80000149c5f8,fffffd80661afe00,fffffd80661af700,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff80000149c5f8,fffffd80661af700,ffff80003c45faf8,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c408a80,5,ffff80003c45fc78,e,ffff80003c45fd30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003c408a80,ffff80003c45fde0,ffff80003c45fd30) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c45fde0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c45fde0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6821a9032a0, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c45f4e0 rbx 0 rdx 0 rcx 0xffff80003c408a80 rax 0xffffffff8386fff0 cpu_info_full_primary+0x1ff0 r8 0xffff80003c45f3c0 r9 0x8080808080808080 r10 0x95a3236357c6b884 r11 0x53b778a97d9c0809 r12 0xfffffd8003f36880 r13 0xfffffd800471dcf0 r14 0x3 r15 0xffffffff8340772d substchar+0x7cb1 rip 0xffffffff81f52ef5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c45f4d0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=181068 pid=36938 tcnt=3 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=0xffff80003c408fb0,0xffff80003c409cb8 process=0xffff80003c425830 user=0xffff80003c45a000, vmspace=0xfffffd80667427d0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36938 139761 83227 0 2 0 syz-executor *36938 181068 83227 0 7 0x4000000 syz-executor 36938 194650 83227 0 3 0x4000080 fsleep syz-executor 59244 273049 20874 0 2 0 syz-executor 59244 38245 20874 0 3 0x4000080 ttyretype syz-executor 57914 379095 50499 0 2 0 syz-executor 57914 113259 50499 0 3 0x4000080 fsleep syz-executor 57914 254024 50499 0 3 0x4000080 fsleep syz-executor 38888 463399 39551 60928 2 0x10 syz-executor 38888 456896 39551 60928 3 0x4000090 sbwait syz-executor 38888 421802 39551 60928 3 0x4000090 sbufrcv syz-executor 89580 217517 21895 0 3 0x80 nanoslp syz-executor 89580 134471 21895 0 3 0x4000080 pipewr syz-executor 89580 350242 21895 0 3 0x4000080 pipewr syz-executor 89580 395004 21895 0 3 0x4000080 fsleep syz-executor 9553 89429 62667 0 3 0x80 nanoslp syz-executor 9553 113767 62667 0 3 0x4000080 ttyin syz-executor 76277 186584 0 0 3 0x14200 acct acct 83227 4608 56730 0 3 0x82 nanoslp syz-executor 20874 418620 56730 0 3 0x82 nanoslp syz-executor 50499 470745 56730 0 3 0x82 nanoslp syz-executor 21895 371199 56730 0 3 0x82 nanoslp syz-executor 6843 235049 56730 0 3 0x82 piperd syz-executor 89602 340387 56730 0 3 0x82 piperd syz-executor 39551 476270 56730 0 2 0x2 syz-executor 62667 408074 56730 0 3 0x82 nanoslp syz-executor 56730 237196 61299 0 2 0x2 syz-executor 61299 381736 66400 0 3 0x10008a sigsusp ksh 66400 1401 72082 0 3 0x98 kqread sshd-session 72082 433718 20574 0 3 0x92 kqread sshd-session 43920 256632 1 0 3 0x100083 ttyopn getty 20574 36174 1 0 3 0x88 kqread sshd 77806 420986 20678 74 3 0x1100092 bpf pflogd 20678 444614 1 0 3 0x80 sbwait pflogd 44064 62722 66196 73 3 0x1100090 kqread syslogd 66196 224446 1 0 3 0x100082 sbwait syslogd 74065 307190 1 0 3 0x100080 kqread resolvd 50692 96720 10716 77 3 0x100092 kqread dhcpleased 38985 209915 10716 77 3 0x100092 kqread dhcpleased 10716 289163 1 0 3 0x80 kqread dhcpleased 76536 488978 0 0 3 0x14200 bored smr 97266 175406 0 0 2 0x14200 zerothread 12668 230470 0 0 3 0x14200 aiodoned aiodoned 71451 239976 0 0 3 0x14200 syncer update 42196 369952 0 0 3 0x14200 cleaner cleaner 37209 178589 0 0 3 0x14200 reaper reaper 47497 239482 0 0 3 0x14200 pgdaemon pagedaemon 77098 109086 0 0 3 0x14200 bored viomb 77769 338242 0 0 3 0x40014200 acpi0 acpi0 79145 333996 0 0 7 0x40014200 idle1 43762 88833 0 0 3 0x14200 bored softnet1 27731 411542 0 0 3 0x14200 bored softnet0 86836 236476 0 0 3 0x14200 smrbar systqmp 18424 15369 0 0 3 0x14200 bored systq 82484 436898 0 0 3 0x14200 tmoslp softclockmp 97869 102030 0 0 3 0x40014200 tmoslp softclock 77491 407947 0 0 3 0x40014200 idle0 1 128638 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 36938 (syz-executor) thread 0xffff80003c408a80 (181068) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839643c8) #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 (0xffff80000149c7e0) #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 38888 (syz-executor) thread 0xffff8000ffffcf98 (456896) exclusive rwlock sbufrcv r = 0 (0xffff80000149db78) #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 Process 86836 (systqmp) thread 0xffff8000ffffea60 (236476) shared rwlock systqmp r = 0 (0xffffffff837a7848) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 11110K 11423K 166960K 13403 0 pcb 18 16K 18K 166960K 194 0 rtable 241 11K 11K 166960K 522 0 pf 38 18K 25K 166960K 150 0 ifaddr 42 7K 8K 166960K 94 0 ifgroup 55 2K 2K 166960K 158 0 sysctl 4 1K 9K 166960K 17 0 counters 68 36K 37K 166960K 306 0 ioctlops 0 0K 4K 166960K 1904 0 iov 0 0K 28K 166960K 65 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1465 92K 93K 166960K 2516 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 42 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 1081 0 sigio 0 0K 0K 166960K 14 0 proc 72 115K 180K 166960K 651 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 154 0 in_multi 96 7K 7K 166960K 152 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 18 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 480 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 251 162K 189K 166960K 11538 0 UVM aobj 12 6K 6K 166960K 14 0 pinsyscall 41 82K 106K 166960K 2276 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 79 0 NDP 12 0K 2K 166960K 65 0 temp 79 8672K 8740K 166960K 63925 0 kqueue 14 22K 34K 166960K 213 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 96 0 93 1 0 1 1 0 8 0 rtentry 176 149 0 50 6 0 6 6 0 8 0 unpcb 144 1270 0 1211 7 1 6 6 0 8 3 syncache 336 6 0 6 2 1 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 736 591 0 585 17 10 7 7 0 8 6 arp 136 25 0 8 1 0 1 1 0 8 0 inpcb 328 1323 0 1310 25 15 10 15 0 8 8 nd6 152 30 0 4 2 0 2 2 0 8 0 pkpcb 40 5 0 5 2 2 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 107 0 107 1 0 1 1 0 8 1 pppxif 1504 4 0 4 3 2 1 1 0 8 1 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pffrag 232 6 0 2 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 10 0 6 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 6 0 6 1 1 0 1 0 8 0 pfanchor 1288 2 0 1 1 0 1 1 0 8 0 pftag 88 5 0 2 1 0 1 1 0 8 0 pfstitem 24 95 0 26 1 0 1 1 0 8 0 pfstkey 128 161 0 92 3 0 3 3 0 8 0 pfstate 448 159 0 92 8 0 8 8 0 8 0 pfrule 1344 31 0 26 2 1 1 2 0 8 0 rttmr 136 5 0 5 3 2 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 696 0 297 34 5 29 31 0 8 2 art_table 40 700 0 297 6 0 6 6 0 8 0 art_node 32 148 0 59 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 13 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 36 0 26 1 0 1 1 0 8 0 shmpl 112 9 0 2 1 0 1 1 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 3439 0 1928 96 0 96 96 0 8 0 ffsino 296 3439 0 1928 117 0 117 117 0 8 0 nchpl 144 4956 0 3252 64 0 64 64 0 8 0 rtmask 32 13 0 13 2 1 1 1 0 8 1 vnodes 216 4238 0 0 236 0 236 236 0 8 0 namei 1024 17049 0 17048 2 1 1 2 0 8 0 percpumem 16 168 0 119 1 0 1 1 0 8 0 vcpupl 3968 2 0 0 1 0 1 1 0 8 0 vmpool 840 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 94 0 68 5 2 3 3 0 8 1 scsiplug 72 7 0 7 2 1 1 1 0 8 1 scxspl 216 33318 0 33318 10 9 1 8 1 8 1 plimitpl 152 297 0 279 1 0 1 1 0 8 0 sigapl 424 1403 0 1356 7 1 6 7 0 8 0 knotepl 120 627 0 0 19 0 19 19 0 8 0 kqueuepl 224 478 0 468 8 6 2 5 0 8 1 pipepl 344 238 0 210 6 0 6 6 0 8 3 fdescpl 528 1383 0 1353 3 0 3 3 0 8 0 filepl 160 9622 0 9356 32 13 19 22 0 8 7 lockfpl 104 386 0 382 1 0 1 1 0 8 0 lockfspl 48 172 0 168 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 47 0 30 1 0 1 1 0 8 0 ucredpl 104 1369 0 1355 1 0 1 1 0 8 0 zombiepl 144 1356 0 1356 1 0 1 1 0 8 1 processpl 1232 1403 0 1356 5 0 5 5 0 8 0 procpl 664 2900 0 2842 6 0 6 6 0 8 0 sosppl 176 3 0 3 2 1 1 1 0 8 1 sockpl 752 2797 0 2721 37 15 22 23 0 8 14 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 39 0 0 4 0 4 4 0 8 0 mtagpl 96 25 0 0 1 0 1 1 0 8 0 mbufpl 256 1212 0 0 75 0 75 75 0 8 0 bufpl 280 13471 0 7334 439 0 439 439 0 8 0 anonpl 32 15283 0 0 124 0 124 124 0 246 0 amapchunkpl 152 40504 0 39940 48 13 35 41 0 158 10 amappl16 200 6212 0 6157 47 32 15 29 0 8 7 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 7 0 6 1 0 1 1 0 8 0 amappl13 176 447 0 446 1 0 1 1 0 8 0 amappl12 168 1764 0 1723 3 0 3 3 0 8 0 amappl11 160 7 0 7 1 1 0 1 0 8 0 amappl10 152 88 0 74 1 0 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 32 0 28 1 0 1 1 0 8 0 amappl7 128 109 0 108 1 0 1 1 0 8 0 amappl6 120 298 0 283 1 0 1 1 0 8 0 amappl5 112 84 0 73 1 0 1 1 0 8 0 amappl4 104 447 0 417 1 0 1 1 0 8 0 amappl3 96 6674 0 6581 3 0 3 3 0 8 0 amappl2 88 1525 0 1449 2 0 2 2 0 8 0 amappl1 80 14089 0 13509 15 1 14 14 0 8 1 amappl 88 10589 0 10417 5 0 5 5 0 92 0 uvmvnodes 80 140 0 0 3 0 3 3 0 8 0 dma32768 32768 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 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 2 2 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 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1383 0 1353 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1383 0 1353 1 0 1 1 0 8 0 vmmpekpl 168 12394 0 12355 3 0 3 3 0 8 0 vmmpepl 168 95423 0 93516 109 11 98 109 0 357 4 vmsppl 488 1382 0 1353 7 2 5 5 0 8 0 rwobjpl 80 28330 0 27219 34 6 28 33 0 8 0 pdppl 4096 2777 0 2708 116 41 75 85 0 8 6 pvpl 32 24794 0 0 201 1 200 201 0 265 0 pmappl 256 1384 0 1353 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 388 0 61 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(fffffd806c930580,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806c930568,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806c930568,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd80604367a0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd80604367a0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff80003c45f870) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff80003c45f870) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff80000149c5f8,fffffd80661af700,ffff80003c408a80) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff80000149c5f8,fffffd80661afe00,fffffd80661af700,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff80000149c5f8,fffffd80661af700,ffff80003c45faf8,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c408a80,5,ffff80003c45fc78,e,ffff80003c45fd30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff80003c408a80,ffff80003c45fde0,ffff80003c45fd30) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff80003c45fde0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c45fde0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6821a9032a0, 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 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5