witness: lock order reversal: 1st 0xffff800001601638 sbufrcv (&so->so_rcv.sb_lock) 2nd 0xfffffd806d5d38d8 inode (&ip->i_lock) lock order [1] sbufrcv (&so->so_rcv.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff832f8018 -> 0xffffffff83343bfc is missing lock order [2] inode (&ip->i_lock) -> [1] 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:684 #7 vndioctl+0xdfe sys/dev/vnd.c:485 #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 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(fffffd806d5d38d8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806d5d38c0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806d5d38c0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805b891630,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805b891630,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_getcwd_common(fffffd805b891630,fffffd805b891558,0,0,200,0,60c44e0b6f44ac8f) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd805b891630,fffffd805b891558,ffff800038808aa0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694 unp_externalize(fffffd805e455600,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090 soreceive(ffff800001601548,ffff80003a414e98,ffff80003a414e48,0,ffff80003a414e80,ffff80003a41500c,7359236c69b32ad) at soreceive+0xc24 sys/kern/uipc_socket.c:1009 recvit(ffff800038808aa0,4,ffff80003a414fe0,0,ffff80003a415090) at recvit+0x40b sys/kern/uipc_syscalls.c:1078 sys_recvmsg(ffff800038808aa0,ffff80003a415140,ffff80003a415090) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878 syscall(ffff80003a415140) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a415140) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb409b183310, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003a414930 rbx 0 rdx 0 rcx 0xffff800038808aa0 rax 0xffff8000299fdff0 r8 0xffff80003a414810 r9 0x8080808080808080 r10 0x718b7b7f324d9ad4 r11 0xbc9fcf14b9ff52f1 r12 0xfffffd8003ef7640 r13 0xfffffd80046debe0 r14 0x3 r15 0xffffffff833dadbe substchar+0xb292 rip 0xffffffff81d6b285 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003a414920 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=79205 pid=10679 tcnt=4 stat=onproc flags process=1000010 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800038809500,0xffff800038808580 process=0xffff80002a3dce88 user=0xffff80003a410000, vmspace=0xfffffd800ce753f0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81683 317816 47675 0 2 0 syz-executor 10679 176600 52249 60929 7 0x1000010 syz-executor 10679 10510 52249 60929 2 0x5000010 syz-executor *10679 79205 52249 60929 7 0x5000010 syz-executor 10679 13421 52249 60929 2 0x5000090 syz-executor 5321 517945 46929 0 2 0 syz-executor 5321 432435 46929 0 3 0x4000080 fsleep syz-executor 65850 58828 8974 60929 3 0x90 nanoslp syz-executor 65850 314541 8974 60929 3 0x4000090 kqsel syz-executor 65850 164670 8974 60929 3 0x4000090 fsleep syz-executor 39195 416469 56047 0 3 0x80 nanoslp syz-executor 39195 204400 56047 0 2 0x4000000 syz-executor 39195 35902 56047 0 3 0x4000080 fsleep syz-executor 63836 274957 7009 -1 3 0x90 nanoslp syz-executor 63836 234222 7009 -1 3 0x4000090 kqsel syz-executor 63836 305904 7009 -1 3 0x4000090 fsleep syz-executor 36652 126850 15276 0 3 0x80 nanoslp syz-executor 36652 308060 15276 0 3 0x4000080 ttyout syz-executor 36652 356123 15276 0 3 0x4000080 fsleep syz-executor 56047 312287 24276 0 3 0x82 nanoslp syz-executor 96008 314013 0 0 3 0x14200 acct acct 8974 5362 24276 0 3 0x82 nanoslp syz-executor 53804 444139 0 0 3 0x14280 nfsidl nfsio 74040 379382 0 0 3 0x14280 nfsidl nfsio 62914 282384 0 0 3 0x14280 nfsidl nfsio 58337 411871 0 0 3 0x14280 nfsidl nfsio 21232 268277 0 0 3 0x14280 nfsidl nfsio 91359 185471 0 0 3 0x14280 nfsidl nfsio 62844 195289 0 0 3 0x14280 nfsidl nfsio 16117 207592 0 0 3 0x14280 nfsidl nfsio 57700 53712 0 0 3 0x14280 nfsidl nfsio 62902 261322 0 0 3 0x14280 nfsidl nfsio 6814 191491 0 0 3 0x14280 nfsidl nfsio 32599 281374 0 0 3 0x14280 nfsidl nfsio 54925 160418 0 0 3 0x14280 nfsidl nfsio 68777 391907 0 0 3 0x14280 nfsidl nfsio 52112 388997 0 0 3 0x14280 nfsidl nfsio 11459 514537 0 0 3 0x14280 nfsidl nfsio 71150 494563 0 0 3 0x14280 nfsidl nfsio 25243 292196 0 0 3 0x14280 nfsidl nfsio 85226 109185 0 0 3 0x14280 nfsidl nfsio 54361 321284 0 0 3 0x14280 nfsidl nfsio 77545 330999 0 0 3 0x14200 bored sosplice 7009 19389 24276 0 3 0x82 nanoslp syz-executor 15276 101578 24276 0 3 0x82 nanoslp syz-executor 52249 60016 24276 0 3 0x82 nanoslp syz-executor 47675 200727 24276 0 3 0x82 nanoslp syz-executor 46929 8354 24276 0 3 0x82 nanoslp syz-executor 54048 349543 24276 0 3 0x82 wait syz-executor 24276 180511 93182 0 3 0x82 kqread syz-executor 93182 107053 9158 0 3 0x10008a sigsusp ksh 9158 447577 73216 0 3 0x98 kqread sshd-session 73216 319793 8007 0 3 0x92 kqread sshd-session 36476 378040 1 0 3 0x100083 ttyopn getty 8007 465025 1 0 3 0x88 kqread sshd 43425 235331 39991 74 3 0x1100092 bpf pflogd 39991 364211 1 0 3 0x80 sbwait pflogd 46113 426676 93987 73 3 0x1100090 kqread syslogd 93987 227848 1 0 3 0x100082 sbwait syslogd 12509 6612 1 0 3 0x100080 kqread resolvd 77935 127816 97011 77 3 0x100092 kqread dhcpleased 16194 55220 97011 77 3 0x100092 kqread dhcpleased 97011 105543 1 0 3 0x80 kqread dhcpleased 78462 117279 0 0 3 0x14200 bored smr 63404 177625 0 0 2 0x14200 zerothread 27629 272247 0 0 3 0x14200 aiodoned aiodoned 725 253724 0 0 3 0x14200 syncer update 23070 142209 0 0 3 0x14200 cleaner cleaner 29211 11333 0 0 3 0x14200 reaper reaper 62342 300227 0 0 3 0x14200 pgdaemon pagedaemon 11490 124900 0 0 3 0x14200 bored viomb 67478 55304 0 0 3 0x40014200 acpi0 acpi0 70759 107101 0 0 3 0x40014200 idle1 78402 362945 0 0 3 0x14200 bored softnet1 57783 150113 0 0 2 0x14200 softnet0 30292 57166 0 0 3 0x14200 bored systqmp 80801 408794 0 0 3 0x14200 bored systq 69268 127694 0 0 3 0x14200 tmoslp softclockmp 82143 26057 0 0 3 0x40014200 tmoslp softclock 25628 316353 0 0 3 0x40014200 idle0 1 409290 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 10679 (syz-executor) thread 0xffff800038808aa0 (79205) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83929028) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 unp_externalize+0x155 sys/kern/uipc_usrreq.c:-1 #2 soreceive+0xc24 sys/kern/uipc_socket.c:1009 #3 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #4 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #6 Xsyscall+0x128 exclusive rwlock sbufrcv r = 0 (0xffff800001601638) #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:870 #4 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #5 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 11172K 11450K 166960K 13703 0 pcb 18 16K 26K 166960K 424 0 rtable 166 9K 10K 166960K 458 0 pf 33 17K 82K 166960K 181 0 ifaddr 29 5K 8K 166960K 124 0 ifgroup 47 2K 2K 166960K 221 0 sysctl 3 1K 9K 166960K 20 0 counters 64 36K 38K 166960K 228 0 ioctlops 0 0K 4K 166960K 1764 0 iov 0 0K 40K 166960K 105 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1451 91K 92K 166960K 2840 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 616K 624K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 150 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1460 0 sigio 0 0K 0K 166960K 18 0 proc 72 115K 163K 166960K 709 0 subproc 72 4K 4K 166960K 92 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 145 0 in_multi 55 4K 7K 166960K 175 0 ether_multi 1 0K 0K 166960K 10 0 mrt 0 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 109 493K 493K 166960K 109 0 exec 0 0K 1K 166960K 595 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 261 170K 193K 166960K 14876 0 UVM aobj 35 2K 2K 166960K 38 0 pinsyscall 43 86K 100K 166960K 2607 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 103 0 NDP 10 0K 2K 166960K 90 0 temp 80 8652K 8732K 166960K 52159 0 kqueue 16 24K 31K 166960K 293 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 120 150 0 145 2 1 1 2 0 8 0 rtentry 176 153 0 92 5 0 5 5 0 8 0 unpcb 144 863 0 842 8 6 2 6 0 8 1 syncache 336 11 0 11 4 4 0 1 0 8 0 tcpcb 736 770 0 761 12 8 4 7 0 8 2 arp 136 18 0 7 1 0 1 1 0 8 0 inpcb 328 1838 0 1820 14 6 8 8 0 8 6 nd6 152 33 0 19 1 0 1 1 0 8 0 pkpcb 40 171 0 171 3 2 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 1 0 1 0 8 0 ppxss 1192 59 0 59 1 0 1 1 0 8 1 pppxif 1504 9 0 9 3 2 1 1 0 8 1 pffrag 232 12 0 4 1 0 1 1 0 482 0 pffrnode 88 10 0 2 1 0 1 1 0 8 0 pffrent 40 23 0 15 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 pfqueue 320 33 0 33 1 1 0 1 0 8 0 pfstitem 24 77 0 29 1 0 1 1 0 8 0 pfstkey 128 80 0 32 2 0 2 2 0 8 0 pfstate 384 79 0 31 5 0 5 5 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 rttmr 136 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 760 0 447 29 5 24 29 0 8 0 art_table 40 762 0 447 5 0 5 5 0 8 0 art_node 32 150 0 98 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 11 2 1 1 1 0 8 0 semupl 112 3 0 3 3 2 1 1 0 8 1 semapl 112 139 0 130 1 0 1 1 0 8 0 shmpl 112 35 0 3 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 4158 0 2654 96 1 95 96 0 8 0 ffsino 296 4158 0 2654 117 0 117 117 0 8 0 nchpl 144 6200 0 4504 64 0 64 64 0 8 0 rtmask 32 12 0 12 2 1 1 1 0 8 1 uvmvnodes 80 5088 0 0 104 0 104 104 0 8 0 vnodes 216 5088 0 0 283 0 283 283 0 8 0 namei 1024 21979 0 21979 3 2 1 2 0 8 1 percpumem 16 129 0 82 1 0 1 1 0 8 0 kstatmem 264 140 0 116 3 0 3 3 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 32312 0 32312 19 17 2 8 1 8 2 plimitpl 152 324 0 305 1 0 1 1 0 8 0 sigapl 424 1769 0 1699 9 1 8 8 0 8 0 knotepl 120 514 0 0 16 0 16 16 0 8 0 kqueuepl 224 716 0 702 11 9 2 7 0 8 1 pipepl 344 250 0 223 8 5 3 8 0 8 0 fdescpl 528 1729 0 1697 3 0 3 3 0 8 0 filepl 160 12176 0 11936 27 12 15 19 0 8 3 lockfpl 104 1212 0 1209 4 2 2 2 0 8 1 lockfspl 48 432 0 429 1 0 1 1 0 8 0 sessionpl 144 30 0 21 1 0 1 1 0 8 0 pgrppl 48 125 0 108 1 0 1 1 0 8 0 ucredpl 104 1984 0 1968 1 0 1 1 0 8 0 zombiepl 144 1700 0 1699 1 0 1 1 0 8 0 processpl 1232 1769 0 1699 7 1 6 6 0 8 0 procpl 664 3921 0 3839 9 1 8 8 0 8 0 sosppl 168 8 0 8 2 1 1 1 0 8 1 sockpl 752 3128 0 3083 24 13 11 16 0 8 6 mcl64k 65536 23 0 0 3 0 3 3 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 72 0 0 8 0 8 8 0 8 0 mtagpl 96 39 0 0 1 0 1 1 0 8 0 mbufpl 256 433 0 0 27 0 27 27 0 8 0 bufpl 280 16516 0 10372 440 0 440 440 0 8 0 anonpl 32 15306 0 0 125 1 124 124 0 246 0 amapchunkpl 152 50204 0 49613 51 14 37 37 0 158 12 amappl16 200 8045 0 8004 55 40 15 32 0 8 8 amappl15 192 41 0 41 2 2 0 1 0 8 0 amappl14 184 132 0 120 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 2409 0 2377 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 250 0 250 2 2 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 118 0 105 1 0 1 1 0 8 0 amappl6 120 205 0 201 1 0 1 1 0 8 0 amappl5 112 131 0 121 1 0 1 1 0 8 0 amappl4 104 318 0 297 1 0 1 1 0 8 0 amappl3 96 8736 0 8632 4 1 3 3 0 8 0 amappl2 88 2015 0 1936 2 0 2 2 0 8 0 amappl1 80 14976 0 14377 17 3 14 15 0 8 0 amappl 88 13925 0 13740 5 0 5 5 0 92 0 dma4096 4096 3 0 3 3 3 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 37 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1729 0 1697 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1729 0 1697 1 0 1 1 0 8 0 vmmpekpl 168 15093 0 15045 3 0 3 3 0 8 0 vmmpepl 168 115733 0 113668 126 11 115 115 0 357 17 vmsppl 488 1728 0 1697 6 1 5 5 0 8 0 rwobjpl 80 38314 0 32226 131 5 126 126 0 8 1 pdppl 4096 3466 0 3394 107 35 72 84 0 8 0 pvpl 32 24397 0 0 199 2 197 197 0 265 0 pmappl 256 1728 0 1697 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 321 0 60 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff837b5ff0) 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(ffffffff83928e20) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83928e20) 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:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff83928e20) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83928e20) at __mp_lock+0x199 sys/kern/kern_lock.c:165 syscall(ffff80002f7e57a0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002f7e57a0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f37215694d0, count: -10 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(fffffd806d5d38d8,9,0) at witness_checkorder+0x10b9 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806d5d38c0,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806d5d38c0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd805b891630,2001) at VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 vn_lock(fffffd805b891630,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_getcwd_common(fffffd805b891630,fffffd805b891558,0,0,200,0,60c44e0b6f44ac8f) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd805b891630,fffffd805b891558,ffff800038808aa0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694 unp_externalize(fffffd805e455600,33,0) at unp_externalize+0x26f sys/kern/uipc_usrreq.c:1090 soreceive(ffff800001601548,ffff80003a414e98,ffff80003a414e48,0,ffff80003a414e80,ffff80003a41500c,7359236c69b32ad) at soreceive+0xc24 sys/kern/uipc_socket.c:1009 recvit(ffff800038808aa0,4,ffff80003a414fe0,0,ffff80003a415090) at recvit+0x40b sys/kern/uipc_syscalls.c:1078 sys_recvmsg(ffff800038808aa0,ffff80003a415140,ffff80003a415090) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878 syscall(ffff80003a415140) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a415140) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xb409b183310, count: -14