witness: lock order reversal: 1st 0xffff800010fcc248 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806f919b48 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff83404b47 -> 0xffffffff83373f99 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic the kernel did not panic ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(fffffd806f919b48,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806f919b30,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806f919b30,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805e4a7d90,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805e4a7d90,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff8000337d54a0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff8000337d54a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fcc060,fffffd805f47c000,ffff800038c062c0) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fcc060,fffffd805eaa6400,fffffd805f47c000,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fcc060,fffffd805f47c000,ffff8000337d5728,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038c062c0,5,ffff8000337d58a8,e,ffff8000337d5960) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff800038c062c0,ffff8000337d5a10,ffff8000337d5960) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff8000337d5a10) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000337d5a10) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf141bea4e40, count: -15 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff8000337d5120 rbx 0 rdx 0 rcx 0xffff800038c062c0 rax 0xffff8000299edff0 r8 0xffff8000337d5000 r9 0x8080808080808080 r10 0xc19abecd41d726ae r11 0x4d79bad12c5e8701 r12 0xfffffd8003f3b8c0 r13 0xfffffd8004723bd0 r14 0x3 r15 0xffffffff8341262b substchar+0x9d2b rip 0xffffffff8242b375 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000337d5110 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=87314 pid=81453 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=0xffff800038c06028,0xffffffff838f53f0 process=0xffff8000367e9830 user=0xffff8000337d0000, vmspace=0xfffffd806f7515c0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81453 452532 89433 0 2 0 syz-executor *81453 87314 89433 0 7 0x4000000 syz-executor 766 508707 20629 0 2 0 syz-executor 766 423734 20629 0 3 0x4000080 fsleep syz-executor 2766 284171 93459 0 3 0x3000 suspend syz-executor 2766 302411 93459 0 3 0x4081000 clonelk syz-executor 42721 394348 49066 0 2 0 syz-executor 42721 485027 49066 0 3 0x4000080 fsleep syz-executor 60935 41274 31582 0 2 0x2 syz-executor 68527 134571 31582 0 3 0x82 nanoslp syz-executor 32968 324723 31582 0 3 0x82 wait syz-executor 24938 374443 1 0 3 0x100083 ttyopn getty 89433 208895 31582 0 3 0x82 nanoslp syz-executor 93459 331469 31582 0 3 0x82 nanoslp syz-executor 49066 172929 31582 0 3 0x82 nanoslp syz-executor 20629 251917 31582 0 3 0x82 nanoslp syz-executor 68052 255816 31582 0 3 0x82 nanoslp syz-executor 31582 280624 38963 0 7 0x3 syz-executor 38963 477935 23835 0 3 0x10008a sigsusp ksh 23835 398174 32165 0 3 0x98 kqread sshd-session 32165 504222 60513 0 3 0x92 kqread sshd-session 60513 511246 1 0 3 0x88 kqread sshd 51522 31454 57307 74 3 0x1100092 bpf pflogd 57307 257752 1 0 3 0x80 sbwait pflogd 58032 452119 55068 73 3 0x1100090 kqread syslogd 55068 359264 1 0 3 0x100082 sbwait syslogd 90500 355020 1 0 3 0x100080 kqread resolvd 62350 63738 33789 77 3 0x100092 kqread dhcpleased 39108 492090 33789 77 3 0x100092 kqread dhcpleased 33789 470630 1 0 3 0x80 kqread dhcpleased 28449 3787 0 0 3 0x14200 pause smr 26971 68873 0 0 2 0x14200 zerothread 56363 248864 0 0 3 0x14200 aiodoned aiodoned 61100 418664 0 0 3 0x14200 syncer update 42334 62626 0 0 3 0x14200 cleaner cleaner 27384 241766 0 0 3 0x14200 reaper reaper 19986 156959 0 0 3 0x14200 pgdaemon pagedaemon 47667 161788 0 0 3 0x14200 bored viomb 11032 474042 0 0 3 0x40014200 acpi0 acpi0 61898 503417 0 0 3 0x40014200 idle1 30490 355662 0 0 3 0x14200 bored softnet1 2436 157815 0 0 2 0x14200 softnet0 99688 86461 0 0 3 0x14200 bored systqmp 57249 314760 0 0 3 0x14200 bored systq 53401 471561 0 0 3 0x14200 tmoslp softclockmp 19417 504494 0 0 3 0x40014200 tmoslp softclock 95724 220475 0 0 3 0x40014200 idle0 1 71696 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 81453 (syz-executor) thread 0xffff800038c062c0 (87314) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839cf8c0) #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 (0xffff800010fcc248) #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10235 11168K 12469K 166960K 14676 0 pcb 19 13K 14K 166960K 405 0 rtable 230 11K 12K 166960K 671 0 pf 38 18K 67485K 166960K 201 0 ifaddr 39 7K 9K 166960K 143 0 ifgroup 56 2K 3K 166960K 260 0 sysctl 4 1K 9K 166960K 16 0 counters 68 36K 38K 166960K 264 0 ioctlops 0 0K 4K 166960K 1909 0 iov 0 0K 24K 166960K 99 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1518 95K 96K 166960K 3455 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 24 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 75 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 1750 0 sigio 0 0K 0K 166960K 27 0 proc 72 115K 180K 166960K 765 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 282 0 in_multi 78 5K 7K 166960K 192 0 ether_multi 1 0K 0K 166960K 14 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 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 785 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 247 152K 176K 166960K 17076 0 UVM aobj 37 14K 14K 166960K 41 0 pinsyscall 42 84K 102K 166960K 2941 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 170 0 NDP 12 0K 2K 166960K 96 0 temp 79 8676K 8796K 166960K 75113 0 kqueue 13 20K 32K 166960K 321 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 224 0 220 3 2 1 3 0 8 0 rtentry 176 194 0 101 7 1 6 6 0 8 0 unpcb 144 1103 0 1082 9 8 1 6 0 8 0 syncache 336 9 0 9 4 3 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 501 0 495 11 10 1 7 0 8 0 arp 136 30 0 11 1 0 1 1 0 8 0 inpcb 328 1840 0 1828 21 17 4 12 0 8 2 nd6 152 40 0 19 2 0 2 2 0 8 0 pkpcb 40 8 0 8 2 1 1 1 0 8 1 kcovpl 48 11 0 3 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1192 70 0 70 2 1 1 1 0 8 1 pppxif 1504 15 0 15 2 1 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 24 0 5 2 0 2 2 0 482 0 pffrnode 88 21 0 3 1 0 1 1 0 8 0 pffrent 40 33 0 13 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 3 0 3 2 1 1 1 0 8 1 pfstitem 24 103 0 34 1 0 1 1 0 8 0 pfstkey 128 105 0 36 3 0 3 3 0 8 0 pfstate 448 102 0 35 9 0 9 9 0 8 0 pfrule 1344 26 0 21 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 898 0 539 34 6 28 31 0 8 0 art_table 40 902 0 539 5 0 5 5 0 8 0 art_node 32 192 0 111 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 68 0 58 1 0 1 1 0 8 0 shmpl 112 33 0 3 1 0 1 1 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 4769 0 3258 96 0 96 96 0 8 0 ffsino 296 4769 0 3258 118 0 118 118 0 8 0 nchpl 144 7108 0 5395 64 0 64 64 0 8 0 rtmask 32 12 0 12 2 1 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 25930 0 25929 3 2 1 2 0 8 0 percpumem 16 147 0 98 1 0 1 1 0 8 0 vcpupl 3968 4 0 0 1 0 1 1 0 8 0 vmpool 840 5 0 1 1 0 1 1 0 8 0 kstatmem 264 150 0 124 4 1 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 7 0 7 2 1 1 1 0 8 1 scxspl 216 35138 0 35138 11 8 3 8 1 8 3 plimitpl 152 627 0 609 1 0 1 1 0 8 0 sigapl 424 2023 0 1976 7 1 6 7 0 8 0 knotepl 120 564 0 0 17 0 17 17 0 8 0 kqueuepl 224 677 0 668 9 8 1 5 0 8 0 pipepl 344 397 0 370 15 6 9 9 0 8 6 fdescpl 528 2002 0 1971 3 0 3 3 0 8 0 filepl 160 14627 0 14397 24 5 19 19 0 8 6 lockfpl 104 800 0 797 2 1 1 2 0 8 0 lockfspl 48 376 0 373 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 60 0 43 1 0 1 1 0 8 0 ucredpl 104 2587 0 2572 1 0 1 1 0 8 0 zombiepl 144 1980 0 1976 1 0 1 1 0 8 0 processpl 1232 2023 0 1976 5 1 4 5 0 8 0 procpl 664 4648 0 4597 6 0 6 6 0 8 0 sosppl 176 15 0 15 3 2 1 1 0 8 1 sockpl 752 3223 0 3186 31 25 6 17 0 8 2 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 1 14 15 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 217 0 0 28 0 28 28 0 8 0 mtagpl 96 266 0 0 7 0 7 7 0 8 0 mbufpl 256 1864 0 0 117 0 117 117 0 8 0 bufpl 280 12563 0 6426 439 0 439 439 0 8 0 anonpl 32 13876 0 0 112 0 112 112 0 246 0 amapchunkpl 152 60165 0 59643 40 4 36 36 0 158 12 amappl16 200 5481 0 5441 41 26 15 24 0 8 8 amappl15 192 105 0 105 1 1 0 1 0 8 0 amappl14 184 6 0 6 2 2 0 1 0 8 0 amappl13 176 460 0 459 1 0 1 1 0 8 0 amappl12 168 2394 0 2352 3 0 3 3 0 8 0 amappl11 160 5 0 5 3 3 0 1 0 8 0 amappl10 152 49 0 35 1 0 1 1 0 8 0 amappl9 144 341 0 339 1 0 1 1 0 8 0 amappl8 136 32 0 29 1 0 1 1 0 8 0 amappl7 128 91 0 89 1 0 1 1 0 8 0 amappl6 120 332 0 319 1 0 1 1 0 8 0 amappl5 112 87 0 76 1 0 1 1 0 8 0 amappl4 104 462 0 430 1 0 1 1 0 8 0 amappl3 96 10270 0 10170 4 1 3 3 0 8 0 amappl2 88 2152 0 2070 2 0 2 2 0 8 0 amappl1 80 17004 0 16412 14 0 14 14 0 8 0 amappl 88 16019 0 15849 5 0 5 5 0 92 0 uvmvnodes 80 161 0 0 4 0 4 4 0 8 0 dma16384 16384 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 2 0 2 2 1 1 1 0 8 1 dma256 256 6 0 6 1 1 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 40 0 4 1 0 1 1 0 8 0 uaddrrnd 24 2002 0 1971 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2002 0 1971 1 0 1 1 0 8 0 vmmpekpl 168 16656 0 16607 3 0 3 3 0 8 0 vmmpepl 168 131531 0 129576 107 8 99 106 0 357 1 vmsppl 488 2001 0 1971 5 0 5 5 0 8 0 rwobjpl 80 34863 0 33708 31 0 31 31 0 8 0 pdppl 4096 4022 0 3948 109 32 77 86 0 8 3 pvpl 32 19905 0 0 161 0 161 161 0 265 0 pmappl 256 2006 0 1972 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 448 0 59 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff837aaff0) 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(ffffffff839cf6b8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839cf6b8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a296990,ffff800000079600) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff839cf6b8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839cf6b8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff839cf6b8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839cf6b8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrstruct(ffff80002a2722a8,ffffffff833d16be,ffff8000016f9a98,8) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 dopselect(ffff80002a2722a8,35,78db7e45ec70,0,0,ffff80002a297040,8285e58eb789075f,ffff80002a2970e0) at dopselect+0xc6b sys/kern/sys_generic.c:720 sys_pselect(ffff80002a2722a8,ffff80002a297190,ffff80002a2970e0) at sys_pselect+0x25a sys/kern/sys_generic.c:589 syscall(ffff80002a297190) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a297190) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x78db7e45ec20, count: -16 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 witness_checkorder(fffffd806f919b48,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806f919b30,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806f919b30,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805e4a7d90,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805e4a7d90,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_lookup(ffff8000337d54a0) at vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 namei(ffff8000337d54a0) at namei+0x7ca sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fcc060,fffffd805f47c000,ffff800038c062c0) at unp_connect+0x29d sys/kern/uipc_usrreq.c:872 uipc_dgram_send(ffff800010fcc060,fffffd805eaa6400,fffffd805f47c000,0) at uipc_dgram_send+0x163 sys/kern/uipc_usrreq.c:609 sosend(ffff800010fcc060,fffffd805f47c000,ffff8000337d5728,0,0,e) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800038c062c0,5,ffff8000337d58a8,e,ffff8000337d5960) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendmsg(ffff800038c062c0,ffff8000337d5a10,ffff8000337d5960) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:603 syscall(ffff8000337d5a10) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000337d5a10) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf141bea4e40, count: -15