˛witness: lock order reversal: 1st 0xffff8000011f9890 sbufrcv (&so->so_rcv.sb_lock) 2nd 0xfffffd80652b6098 inode (&ip->i_lock) lock order [1] sbufrcv (&so->so_rcv.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff830d5171 -> 0xffffffff8304f7ef is missing lock order [2] inode (&ip->i_lock) -> [1] 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 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(fffffd80652b6098,9,0) at witness_checkorder+0x1024 rw_enter(fffffd80652b6088,1) at rw_enter+0x122 rrw_enter(fffffd80652b6088,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805c0f9a50,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805c0f9a50,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_getcwd_common(fffffd805c0f9a50,fffffd805c0f9a50,0,0,200,0,1edec2f6f732ce3) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd805c0f9a50,fffffd805c0f9a50,ffff8000371e0540) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688 unp_externalize(fffffd806876d600,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1088 soreceive(ffff8000011f97c0,ffff80002a0e6478,ffff80002a0e6428,0,ffff80002a0e6468,ffff80002a0e65ec,dccf7bc20606315f) at soreceive+0xd3e sys/kern/uipc_socket.c:1022 recvit(ffff8000371e0540,6,ffff80002a0e65c0,0,ffff80002a0e6670) at recvit+0x40a sys/kern/uipc_syscalls.c:1082 sys_recvmsg(ffff8000371e0540,ffff80002a0e6720,ffff80002a0e6670) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882 syscall(ffff80002a0e6720) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0e6720) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5f4a5c3000, count: -14 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff80002a0e5ed0 rbx 0xffffffff83061629 pp_r600_decoded_lanes+0x34594 rdx 0xffff80000118a540 rcx 0xffff8000371e0540 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff80002a0e5db0 r9 0x8080808080808080 r10 0x1bddad50c92091c6 r11 0x4f4808ee64e8a360 r12 0xfffffd800429f360 r13 0xfffffd8003ab7dc0 r14 0x3 r15 0xffffffff rip 0xffffffff816cefe5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a0e5ec0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=155611 pid=74205 tcnt=3 stat=onproc flags process=9000000 proc=4000000 runpri=24, usrpri=50, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000371e1470,0xffff80002a06c028 process=0xffff8000ffff04b0 user=0xffff80002a0e1000, vmspace=0xfffffd807b1a2a50 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 45322 489455 62568 0 7 0x8000000 syz-executor 45322 86646 62568 0 3 0xc000080 kqpoll syz-executor 45322 9760 62568 0 3 0xc000080 fsleep syz-executor 55328 88321 43005 0 2 0x8000000 syz-executor 55328 368237 43005 0 3 0xc000080 fifor syz-executor 55328 356747 43005 0 2 0xc000000 syz-executor 72417 300460 16678 0 2 0x8000000 syz-executor 72417 108769 16678 0 3 0xc000080 fsleep syz-executor 72417 187399 16678 0 3 0xc000080 sbwait syz-executor 74205 210316 98091 0 2 0x9000000 syz-executor *74205 155611 98091 0 7 0xd000000 syz-executor 74205 98756 98091 0 2 0xd000000 syz-executor 68968 305401 23954 0 2 0x8000000 syz-executor 68968 371957 23954 0 3 0xc000080 fsleep syz-executor 23647 4442 70639 0 3 0x8000080 nanoslp syz-executor 23647 320587 70639 0 3 0xc000080 bell syz-executor 23647 33040 70639 0 3 0xc000080 fsleep syz-executor 69511 179484 31096 0 3 0x8000080 nanoslp syz-executor 69511 457984 31096 0 3 0xc000080 kqsel syz-executor 70639 11959 6008 0 3 0x8000082 nanoslp syz-executor 31096 257503 6008 0 3 0x8000082 nanoslp syz-executor 26225 263010 6008 0 3 0x8000082 wait syz-executor 43005 480799 6008 0 3 0x8000082 nanoslp syz-executor 62568 183020 6008 0 3 0x8000082 nanoslp syz-executor 16678 166123 6008 0 3 0x8000082 nanoslp syz-executor 98091 438342 6008 0 3 0x8000082 nanoslp syz-executor 23954 217656 6008 0 3 0x8000082 nanoslp syz-executor 68764 16288 0 0 3 0x14280 nfsidl nfsio 1968 15649 0 0 3 0x14280 nfsidl nfsio 77073 206138 0 0 3 0x14280 nfsidl nfsio 96822 444765 0 0 3 0x14280 nfsidl nfsio 36266 76572 0 0 3 0x14280 nfsidl nfsio 24214 315981 0 0 3 0x14280 nfsidl nfsio 68292 78936 0 0 3 0x14280 nfsidl nfsio 54611 211878 0 0 3 0x14280 nfsidl nfsio 18480 443366 0 0 3 0x14280 nfsidl nfsio 42454 377619 0 0 3 0x14280 nfsidl nfsio 95075 472425 0 0 3 0x14280 nfsidl nfsio 6827 338708 0 0 3 0x14280 nfsidl nfsio 70517 363219 0 0 3 0x14280 nfsidl nfsio 29112 11962 0 0 3 0x14280 nfsidl nfsio 66874 289256 0 0 3 0x14280 nfsidl nfsio 6479 144114 0 0 3 0x14280 nfsidl nfsio 26355 306937 0 0 3 0x14280 nfsidl nfsio 44521 270316 0 0 3 0x14280 nfsidl nfsio 90915 304769 0 0 3 0x14280 nfsidl nfsio 15207 108977 0 0 3 0x14280 nfsidl nfsio 86339 511558 0 0 3 0x14200 bored sosplice 6008 490561 36263 0 3 0x8000082 kqread syz-executor 36263 71669 51977 0 3 0x810008a sigsusp ksh 51977 329185 91401 0 3 0x18000098 kqread sshd-session 91401 474953 52563 0 3 0x18000092 kqread sshd-session 47011 168827 1 0 3 0x18100083 ttyopn getty 52563 459836 1 0 3 0x18000088 kqread sshd 18154 44703 3378 74 3 0x19100092 bpf pflogd 3378 238414 1 0 3 0x18000080 sbwait pflogd 82688 523983 2678 73 3 0x19100090 kqread syslogd 2678 475012 1 0 3 0x18100082 sbwait syslogd 2111 246314 1 0 3 0x18100080 kqread resolvd 87732 184921 99484 77 3 0x18100092 kqread dhcpleased 42429 74288 99484 77 3 0x18100092 kqread dhcpleased 99484 87291 1 0 3 0x18000080 kqread dhcpleased 85141 511867 0 0 3 0x14200 bored smr 87636 189335 0 0 2 0x14200 zerothread 23634 414436 0 0 3 0x14200 aiodoned aiodoned 7991 385372 0 0 3 0x14200 syncer update 46774 247419 0 0 3 0x14200 cleaner cleaner 94589 42873 0 0 3 0x14200 reaper reaper 58833 428781 0 0 3 0x14200 pgdaemon pagedaemon 40404 96697 0 0 3 0x14200 bored viomb 73915 134200 0 0 3 0x40014200 acpi0 acpi0 9702 156160 0 0 3 0x40014200 idle1 1921 248641 0 0 3 0x14200 bored softnet3 62496 521840 0 0 3 0x14200 bored softnet2 18840 87085 0 0 3 0x14200 bored softnet1 68665 175492 0 0 3 0x14200 bored softnet0 88020 323554 0 0 3 0x14200 bored systqmp 3102 205603 0 0 3 0x14200 bored systq 63608 412575 0 0 3 0x14200 tmoslp softclockmp 19804 333853 0 0 3 0x40014200 tmoslp softclock 55993 195004 0 0 3 0x40014200 idle0 1 123550 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 74205 (syz-executor) thread 0xffff8000371e0540 (155611) 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_externalize+0x14e #2 soreceive+0xd3e sys/kern/uipc_socket.c:1022 #3 recvit+0x40a sys/kern/uipc_syscalls.c:1082 #4 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive rwlock sbufrcv r = 0 (0xffff8000011f9890) #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 soreceive+0x298 sys/kern/uipc_socket.c:877 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1082 #5 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882 #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 10240 10309K 10634K 166960K 13608 0 pcb 17 15K 17K 166960K 353 0 rtable 220 9K 9K 166960K 2781 0 pf 36 10K 10K 166960K 223 0 ifaddr 45 16K 16K 166960K 372 0 ifgroup 63 2K 2K 166960K 395 0 sysctl 3 0K 2K 166960K 5 0 counters 68 36K 37K 166960K 242 0 ioctlops 0 0K 4K 166960K 1670 0 iov 1 2K 16K 166960K 273 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1444 91K 91K 166960K 3508 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 36 0 VM map 2 1K 1K 166960K 2 0 sem 18 10K 10K 166960K 152 0 dirhash 15 2K 3K 166960K 30 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 18 65K 93K 166960K 2292 0 sigio 0 0K 0K 166960K 20 0 proc 70 91K 128K 166960K 2691 0 subproc 104 6K 7K 166960K 1092 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 174 0 in_multi 89 6K 7K 166960K 969 0 ether_multi 1 0K 0K 166960K 9 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 1474 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 262 75K 92K 166960K 18701 0 UVM aobj 119 7K 7K 166960K 125 0 pinsyscall 43 86K 108K 166960K 5321 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 63 0 NDP 14 0K 2K 166960K 268 0 temp 78 6816K 14753K 166960K 67225 0 kqueue 14 22K 32K 166960K 204 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 120 358 0 354 3 2 1 3 0 8 0 rtentry 112 972 0 874 8 5 3 4 0 8 0 unpcb 144 1635 0 1612 27 25 2 8 0 8 1 syncache 336 8 0 8 6 5 1 1 0 8 1 tcpcb 808 602 0 595 27 25 2 8 0 8 1 arp 120 174 0 156 1 0 1 1 0 8 0 inpcb 384 2280 0 2270 35 32 3 11 0 8 1 nd6 136 262 0 237 1 0 1 1 0 8 0 pkpcb 40 5 0 5 5 4 1 1 0 8 1 kcovpl 48 84 0 76 1 0 1 1 0 8 0 ppxss 1168 9 0 9 6 5 1 1 0 8 1 pffrag 232 23 0 17 2 1 1 1 0 482 0 pffrnode 88 19 0 14 2 1 1 1 0 8 0 pffrent 40 42 0 36 2 1 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 24 164 0 127 1 0 1 1 0 8 0 pfstkey 128 164 0 127 2 0 2 2 0 8 0 pfstate 376 164 0 127 5 1 4 4 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 3885 0 3469 47 18 29 29 0 8 0 art_table 32 3886 0 3469 4 0 4 4 0 8 0 art_node 16 969 0 881 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 2 2 1 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 113 0 97 1 0 1 1 0 8 0 shmpl 112 122 0 6 4 0 4 4 0 8 0 dirhash 1024 29 0 10 3 0 3 3 0 8 0 dino2pl 256 3773 0 2112 105 0 105 105 0 8 0 ffsino 272 3773 0 2112 112 0 112 112 0 8 0 nchpl 144 5617 0 3819 67 0 67 67 0 8 0 uvmvnodes 80 5516 0 0 113 0 113 113 0 8 0 vnodes 216 5516 0 0 307 0 307 307 0 8 0 namei 1024 27673 0 27673 7 6 1 2 0 8 1 percpumem 16 135 0 87 1 0 1 1 0 8 0 vcpupl 3904 5 0 0 1 0 1 1 0 8 0 vmpool 696 7 0 2 1 0 1 1 0 8 0 kstatmem 264 202 0 174 3 0 3 3 0 8 0 scsiplug 72 10 0 10 6 6 0 1 0 8 0 scxspl 216 43790 0 43790 15 14 1 8 1 8 1 plimitpl 152 573 0 556 1 0 1 1 0 8 0 sigapl 424 2464 0 2393 9 0 9 9 0 8 0 futexpl 64 19352 0 19348 7 6 1 1 0 8 0 knotepl 120 655 0 0 16 0 16 16 0 8 0 kqueuepl 216 560 0 548 9 6 3 5 0 8 2 pipepl 320 599 0 572 6 3 3 5 0 8 0 fdescpl 496 2423 0 2391 5 0 5 5 0 8 0 filepl 152 15484 0 15225 53 41 12 21 0 8 2 lockfpl 104 467 0 463 1 0 1 1 0 8 0 lockfspl 48 192 0 188 1 0 1 1 0 8 0 sessionpl 144 97 0 88 1 0 1 1 0 8 0 pgrppl 48 188 0 171 1 0 1 1 0 8 0 ucredpl 104 2410 0 2396 1 0 1 1 0 8 0 zombiepl 144 2394 0 2393 2 1 1 1 0 8 0 processpl 1152 2464 0 2393 7 1 6 6 0 8 0 procpl 648 4365 0 4282 12 4 8 8 0 8 1 srpgc 96 6 0 6 3 3 0 1 0 8 0 sosppl 168 9 0 8 4 3 1 1 0 8 0 sockpl 664 4296 0 4259 69 64 5 20 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 274 0 0 30 0 30 30 0 8 0 mtagpl 96 18 0 0 1 0 1 1 0 8 0 mbufpl 256 3142 0 0 189 0 189 189 0 8 0 bufpl 280 9323 0 2183 511 0 511 511 0 8 0 anonpl 24 379411 0 373814 108 45 63 65 0 185 17 amapchunkpl 152 59998 0 59372 77 41 36 42 0 158 11 amappl16 200 6706 0 6645 36 22 14 16 0 8 8 amappl15 192 11 0 11 2 2 0 1 0 8 0 amappl14 184 262 0 250 1 0 1 1 0 8 0 amappl13 176 14 0 14 1 1 0 1 0 8 0 amappl12 168 4266 0 4234 4 2 2 3 0 8 0 amappl11 160 59 0 45 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 134 0 134 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 261 0 248 1 0 1 1 0 8 0 amappl6 120 916 0 914 1 0 1 1 0 8 0 amappl5 112 438 0 425 1 0 1 1 0 8 0 amappl4 104 549 0 524 1 0 1 1 0 8 0 amappl3 96 11520 0 11396 8 4 4 4 0 8 0 amappl2 88 1673 0 1609 2 0 2 2 0 8 0 amappl1 80 18760 0 18173 15 2 13 15 0 8 0 amappl 88 17720 0 17525 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 72 124 0 6 3 0 3 3 0 8 0 uaddrrnd 24 2430 0 2393 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2430 0 2393 1 0 1 1 0 8 0 vmmpekpl 168 22143 0 22088 3 0 3 3 0 8 0 vmmpepl 168 156574 0 154571 118 25 93 94 0 357 5 vmsppl 440 2429 0 2393 9 4 5 5 0 8 0 rwobjpl 56 50263 0 43620 96 1 95 95 0 8 1 pdppl 4096 4867 0 4791 212 136 76 85 0 8 0 pvpl 32 30486 0 0 246 1 245 245 0 265 0 pmappl 248 2429 0 2393 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 752 0 197 16 0 16 16 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(ffff800037203a20,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+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(ffff800037203b80,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+0x10 sys/dev/kcov.c:154 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x714ad99beb90, 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(fffffd80652b6098,9,0) at witness_checkorder+0x1024 rw_enter(fffffd80652b6088,1) at rw_enter+0x122 rrw_enter(fffffd80652b6088,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd805c0f9a50,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805c0f9a50,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_getcwd_common(fffffd805c0f9a50,fffffd805c0f9a50,0,0,200,0,1edec2f6f732ce3) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd805c0f9a50,fffffd805c0f9a50,ffff8000371e0540) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688 unp_externalize(fffffd806876d600,ec,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1088 soreceive(ffff8000011f97c0,ffff80002a0e6478,ffff80002a0e6428,0,ffff80002a0e6468,ffff80002a0e65ec,dccf7bc20606315f) at soreceive+0xd3e sys/kern/uipc_socket.c:1022 recvit(ffff8000371e0540,6,ffff80002a0e65c0,0,ffff80002a0e6670) at recvit+0x40a sys/kern/uipc_syscalls.c:1082 sys_recvmsg(ffff8000371e0540,ffff80002a0e6720,ffff80002a0e6670) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:882 syscall(ffff80002a0e6720) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a0e6720) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5f4a5c3000, count: -14