witness: lock order reversal: 1st 0xffff800010fd41b8 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd80617e6a30 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff830a027e -> 0xffffffff8304f7ef is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_enter+0x122 #1 sblock+0xb7 sys/kern/uipc_socket2.c:549 #2 soreceive+0x298 sys/kern/uipc_socket.c:877 #3 fifo_read+0x11a sys/miscfs/fifofs/fifo_vnops.c:264 #4 VOP_READ+0x102 sys/kern/vfs_vops.c:227 #5 vn_rdwr+0x15b #6 vndsetcred+0xa1 sys/dev/vnd.c:684 #7 vndioctl+0xe6c sys/dev/vnd.c:485 #8 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #9 vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 #10 sys_ioctl+0x67c #11 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #11 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] sbufsnd (&so->so_snd.sb_lock) #0 rw_enter+0x122 #1 sblock+0xb7 sys/kern/uipc_socket2.c:549 #2 sosplice+0x3e3 sys/kern/uipc_socket.c:1386 #3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1231 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #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:437 witness_checkorder(fffffd80617e6a30,9,0) at witness_checkorder+0x1024 rw_enter(fffffd80617e6a20,1) at rw_enter+0x122 rrw_enter(fffffd80617e6a20,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8061d1f538,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8061d1f538,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff80002a0c7e38) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff80002a0c7e38) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fd4010,fffffd806a773300,ffff800033d8a550) at unp_connect+0x27d sys/kern/uipc_usrreq.c:862 uipc_dgram_send(ffff800010fd4010,fffffd806a7bdb00,fffffd806a773300,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:601 sosend(ffff800010fd4010,fffffd806a773300,ffff80002a0c80c8,0,0,0) at sosend+0xa43 sendit(ffff800033d8a550,6,ffff80002a0c8240,0,ffff80002a0c8300) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff800033d8a550,ffff80002a0c83b0,ffff80002a0c8300) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff80002a0c83b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0c83b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6281df5c4d0, count: -15 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff80002a0c7a90 rbx 0xffffffff83061629 pp_r600_decoded_lanes+0x34594 rdx 0xffff80000119e6c0 rcx 0xffff800033d8a550 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff80002a0c7970 r9 0x8080808080808080 r10 0x515e8bf127a07226 r11 0x89cbe2dd6811d830 r12 0xfffffd800429f718 r13 0xfffffd8003ab7dc0 r14 0x3 r15 0xffffffff rip 0xffffffff816cefe5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a0c7a80 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=73442 pid=14977 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800033d8af70,0xffffffff834f9740 process=0xffff80002ba04030 user=0xffff80002a0c3000, vmspace=0xfffffd806a7e11c0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8646 135944 47230 0 3 0x8000002 clonelk ifconfig 47230 33947 83243 0 3 0x810008a sigsusp sh 14977 73698 43051 0 2 0x8000000 syz-executor *14977 73442 43051 0 7 0xc000000 syz-executor 47452 420563 1575 0 2 0x8000000 syz-executor 83095 129765 67436 0 2 0x8000000 syz-executor 83095 436092 67436 0 3 0xc000080 fsleep syz-executor 48372 6212 30367 0 2 0x8000000 syz-executor 48372 388155 30367 0 3 0xc000080 fsleep syz-executor 48372 118365 30367 0 3 0xc000080 fsleep syz-executor 48372 481016 30367 0 2 0xc000000 syz-executor 56250 141538 97539 0 7 0x8000000 syz-executor 56250 149748 97539 0 3 0xc000080 fsleep syz-executor 56250 153665 97539 0 3 0xc000080 sbwait syz-executor 83243 278862 45918 0 3 0x8000082 wait syz-executor 10600 48725 45918 0 3 0x8000082 piperd syz-executor 30367 63310 45918 0 3 0x8000082 nanoslp syz-executor 43051 158451 45918 0 3 0x8000082 nanoslp syz-executor 97539 11002 45918 0 3 0x8000082 nanoslp syz-executor 1575 304844 45918 0 3 0x8000082 nanoslp syz-executor 67436 70422 45918 0 3 0x8000082 nanoslp syz-executor 57369 109972 0 0 3 0x14280 nfsidl nfsio 12392 297501 0 0 3 0x14280 nfsidl nfsio 54790 252267 0 0 3 0x14280 nfsidl nfsio 43471 91324 0 0 3 0x14280 nfsidl nfsio 1070 157416 0 0 3 0x14280 nfsidl nfsio 31071 388354 0 0 3 0x14280 nfsidl nfsio 45843 318372 0 0 3 0x14280 nfsidl nfsio 13922 350224 0 0 3 0x14280 nfsidl nfsio 65396 191266 0 0 3 0x14280 nfsidl nfsio 69662 316906 0 0 3 0x14280 nfsidl nfsio 97834 206438 0 0 3 0x14280 nfsidl nfsio 51407 15779 0 0 3 0x14280 nfsidl nfsio 68424 77071 0 0 3 0x14280 nfsidl nfsio 42648 243460 0 0 3 0x14280 nfsidl nfsio 24909 210732 0 0 3 0x14280 nfsidl nfsio 20762 405957 0 0 3 0x14280 nfsidl nfsio 41950 281566 0 0 3 0x14280 nfsidl nfsio 73916 69204 0 0 3 0x14280 nfsidl nfsio 69957 201725 0 0 3 0x14280 nfsidl nfsio 18761 334407 0 0 3 0x14280 nfsidl nfsio 69800 142161 0 0 3 0x14200 bored sosplice 45918 494945 20586 0 3 0x8000082 wait syz-executor 20586 192835 8442 0 3 0x810008a sigsusp ksh 8442 69379 43849 0 3 0x18000098 kqread sshd-session 43849 64258 5958 0 3 0x18000092 kqread sshd-session 86574 184627 1 0 3 0x18100083 ttyin getty 5958 461381 1 0 3 0x18000088 kqread sshd 21411 375298 91296 74 3 0x19100092 bpf pflogd 91296 238664 1 0 3 0x18000080 sbwait pflogd 40273 336625 19851 73 3 0x19100090 kqread syslogd 19851 249173 1 0 3 0x18100082 sbwait syslogd 79981 518301 1 0 3 0x18100080 kqread resolvd 93590 280235 68426 77 3 0x18100092 kqread dhcpleased 85317 40204 68426 77 3 0x18100092 kqread dhcpleased 68426 28874 1 0 3 0x18000080 kqread dhcpleased 46299 497804 0 0 2 0x40014200 smr 53509 25171 0 0 3 0x14200 pgzero zerothread 49653 440266 0 0 3 0x14200 aiodoned aiodoned 23301 305663 0 0 3 0x14200 syncer update 64803 456796 0 0 3 0x14200 cleaner cleaner 37927 508453 0 0 3 0x14200 reaper reaper 59098 518270 0 0 3 0x14200 pgdaemon pagedaemon 96929 159518 0 0 3 0x14200 bored viomb 32730 327227 0 0 3 0x40014200 acpi0 acpi0 48096 244567 0 0 3 0x40014200 idle1 80966 113629 0 0 3 0x14200 bored softnet3 29070 42612 0 0 3 0x14200 bored softnet2 37998 512275 0 0 3 0x14200 bored softnet1 38384 345457 0 0 3 0x14200 bored softnet0 50327 154184 0 0 3 0x14200 bored systqmp 43903 413865 0 0 3 0x14200 bored systq 19604 32109 0 0 3 0x14200 tmoslp softclockmp 38786 40231 0 0 3 0x40014200 tmoslp softclock 70731 121853 0 0 3 0x40014200 idle0 1 154233 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 14977 (syz-executor) thread 0xffff800033d8a550 (73442) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff834f5130) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 unp_connect+0x26c sys/kern/uipc_usrreq.c:862 #2 uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:601 #3 sosend+0xa43 #4 sendit+0x721 sys/kern/uipc_syscalls.c:786 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff800010fd41b8) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 sosend+0x2ff sys/kern/uipc_socket.c:611 #4 sendit+0x721 sys/kern/uipc_syscalls.c:786 #5 sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10243 10374K 10837K 166960K 14852 0 pcb 18 20K 22K 166960K 660 0 rtable 181 6K 9K 166960K 2006 0 pf 35 10K 11K 166960K 199 0 ifaddr 40 15K 16K 166960K 275 0 ifgroup 60 2K 3K 166960K 327 0 sysctl 3 0K 4K 166960K 4 0 counters 66 36K 37K 166960K 216 0 ioctlops 0 0K 4K 166960K 1694 0 iov 1 2K 24K 166960K 114 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1439 90K 91K 166960K 3662 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 13K 166960K 34 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 143 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 93K 166960K 2250 0 sigio 0 0K 0K 166960K 88 0 proc 77 103K 140K 166960K 1971 0 subproc 104 6K 7K 166960K 741 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 456 0 in_multi 68 5K 7K 166960K 663 0 ether_multi 1 0K 0K 166960K 7 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 1237 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 229 89K 108K 166960K 20041 0 UVM aobj 99 5K 7K 166960K 103 0 pinsyscall 42 84K 108K 166960K 4571 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 1K 166960K 179 0 NDP 15 0K 2K 166960K 200 0 temp 74 6816K 14745K 166960K 69408 0 kqueue 13 20K 30K 166960K 294 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 247 0 244 1 0 1 1 0 8 0 rtentry 112 696 0 617 4 0 4 4 0 8 0 unpcb 144 1626 0 1606 9 7 2 4 0 8 1 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpcb 808 969 0 965 21 14 7 8 0 8 6 arp 120 127 0 110 1 0 1 1 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 6 0 6 1 1 0 1 0 8 0 inpcb 384 3316 0 3306 55 47 8 18 0 8 6 nd6 136 183 0 168 2 1 1 2 0 8 0 pkpcb 40 15 0 15 3 3 0 1 0 8 0 kcovpl 48 57 0 49 1 0 1 1 0 8 0 ppxss 1168 21 0 21 4 4 0 1 0 8 0 pffrag 232 14 0 12 1 0 1 1 0 482 0 pffrnode 88 14 0 12 1 0 1 1 0 8 0 pffrent 40 21 0 19 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 pfstitem 24 149 0 104 1 0 1 1 0 8 0 pfstkey 128 149 0 104 3 0 3 3 0 8 0 pfstate 376 149 0 104 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2698 0 2371 34 5 29 29 0 8 0 art_table 32 2699 0 2371 4 0 4 4 0 8 0 art_node 16 690 0 620 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 5 1 0 1 1 0 8 0 semapl 112 107 0 97 1 0 1 1 0 8 0 shmpl 112 100 0 4 3 0 3 3 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 4416 0 2820 100 0 100 100 0 8 0 ffsino 272 4416 0 2820 107 0 107 107 0 8 0 nchpl 144 6845 0 5066 66 0 66 66 0 8 0 uvmvnodes 80 6209 0 0 127 0 127 127 0 8 0 vnodes 216 6209 0 0 345 0 345 345 0 8 0 namei 1024 30001 0 30000 4 3 1 2 0 8 0 percpumem 16 122 0 75 1 0 1 1 0 8 0 vcpupl 3904 3 0 1 1 0 1 1 0 8 0 vmpool 696 8 0 6 2 1 1 1 0 8 0 kstatmem 264 176 0 150 4 2 2 3 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 34668 0 34668 13 11 2 8 1 8 2 plimitpl 152 631 0 614 1 0 1 1 0 8 0 sigapl 424 2472 0 2402 12 3 9 9 0 8 1 futexpl 64 26846 0 26842 6 5 1 1 0 8 0 knotepl 120 580 0 0 17 0 17 17 0 8 0 kqueuepl 216 914 0 905 9 8 1 5 0 8 0 pipepl 320 517 0 490 5 2 3 5 0 8 0 fdescpl 496 2432 0 2401 5 0 5 5 0 8 0 filepl 152 18123 0 17877 38 25 13 23 0 8 3 lockfpl 104 755 0 753 2 1 1 2 0 8 0 lockfspl 48 344 0 342 1 0 1 1 0 8 0 sessionpl 144 71 0 62 1 0 1 1 0 8 0 pgrppl 48 211 0 194 1 0 1 1 0 8 0 ucredpl 104 2698 0 2685 1 0 1 1 0 8 0 zombiepl 144 2403 0 2402 1 0 1 1 0 8 0 processpl 1152 2472 0 2402 7 1 6 6 0 8 0 procpl 648 4953 0 4876 9 1 8 8 0 8 0 srpgc 96 12 0 12 3 3 0 1 0 8 0 sosppl 168 5 0 5 3 3 0 1 0 8 0 sockpl 664 5220 0 5187 48 39 9 18 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 245 0 0 29 0 29 29 0 8 0 mtagpl 96 84 0 0 3 0 3 3 0 8 0 mbufpl 256 460 0 0 24 0 24 24 0 8 0 bufpl 280 9388 0 2914 463 0 463 463 0 8 0 anonpl 24 375379 0 366074 134 50 84 109 0 185 12 amapchunkpl 152 63998 0 63472 52 21 31 36 0 158 8 amappl16 200 8405 0 8107 78 49 29 41 0 8 7 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 214 0 202 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 3841 0 3810 4 2 2 3 0 8 0 amappl11 160 77 0 62 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 171 0 171 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 208 0 196 1 0 1 1 0 8 0 amappl6 120 648 0 645 1 0 1 1 0 8 0 amappl5 112 326 0 313 1 0 1 1 0 8 0 amappl4 104 464 0 444 1 0 1 1 0 8 0 amappl3 96 12851 0 12748 4 0 4 4 0 8 0 amappl2 88 1286 0 1218 2 0 2 2 0 8 0 amappl1 80 17029 0 16436 18 4 14 16 0 8 0 amappl 88 19230 0 19065 5 0 5 5 0 92 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 72 102 0 4 2 0 2 2 0 8 0 uaddrrnd 24 2440 0 2407 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2440 0 2407 1 0 1 1 0 8 0 vmmpekpl 168 21715 0 21662 4 0 4 4 0 8 0 vmmpepl 168 162170 0 160059 139 28 111 114 0 357 12 vmsppl 440 2439 0 2407 7 3 4 5 0 8 0 rwobjpl 56 50391 0 42850 115 6 109 109 0 8 1 pdppl 4096 4887 0 4816 162 85 77 85 0 8 6 pvpl 32 37361 0 0 301 0 301 301 0 265 0 pmappl 248 2439 0 2407 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 498 0 115 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8343eff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff834f4f28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834f4f28) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80002a0e80f0,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff834f4f28) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff834f4f28) at __mp_lock+0x199 sys/kern/kern_lock.c:144 intr_handler(ffff80002a0e8250,ffff80000006c000) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x44 sys/dev/kcov.c:164 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x73ac44bccb90, count: -12 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:437 witness_checkorder(fffffd80617e6a30,9,0) at witness_checkorder+0x1024 rw_enter(fffffd80617e6a20,1) at rw_enter+0x122 rrw_enter(fffffd80617e6a20,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8061d1f538,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8061d1f538,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff80002a0c7e38) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff80002a0c7e38) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fd4010,fffffd806a773300,ffff800033d8a550) at unp_connect+0x27d sys/kern/uipc_usrreq.c:862 uipc_dgram_send(ffff800010fd4010,fffffd806a7bdb00,fffffd806a773300,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:601 sosend(ffff800010fd4010,fffffd806a773300,ffff80002a0c80c8,0,0,0) at sosend+0xa43 sendit(ffff800033d8a550,6,ffff80002a0c8240,0,ffff80002a0c8300) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff800033d8a550,ffff80002a0c83b0,ffff80002a0c8300) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff80002a0c83b0) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0c83b0) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6281df5c4d0, count: -15