witness: lock order reversal: 1st 0xffff800010fd4bb0 sbufrcv (&so->so_rcv.sb_lock) 2nd 0xfffffd806dd7def8 inode (&ip->i_lock) lock order [1] sbufrcv (&so->so_rcv.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff834385bd -> 0xffffffff833a5512 is missing lock order [2] inode (&ip->i_lock) -> [1] sbufrcv (&so->so_rcv.sb_lock) #0 rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 #1 sblock+0xb7 sys/kern/uipc_socket2.c:536 #2 soreceive+0x28e sys/kern/uipc_socket.c:882 #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+0xf8 sys/kern/vfs_vnops.c:531 #10 sys_ioctl+0x5c3 #11 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbc6 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:438 witness_checkorder(fffffd806dd7def8,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd7dee0,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd7dee0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd805ee2ad88,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805ee2ad88,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_getcwd_common(fffffd805ee2ad88,fffffd805ee2a008,0,0,200,0,b6ead4344fa85164) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd805ee2ad88,fffffd805ee2a008,ffff80002a33acf0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694 unp_externalize(fffffd8069c73300,33,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1086 soreceive(ffff800010fd4ad0,ffff80003c58d088,ffff80003c58d038,0,ffff80003c58d078,ffff80003c58d1fc,936510cc992f0ed6) at soreceive+0xc73 sys/kern/uipc_socket.c:1021 recvit(ffff80002a33acf0,b,ffff80003c58d1d0,0,ffff80003c58d280) at recvit+0x40a sys/kern/uipc_syscalls.c:1072 sys_recvmsg(ffff80002a33acf0,ffff80003c58d330,ffff80003c58d280) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 syscall(ffff80003c58d330) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c58d330) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x282f7eba0c0, count: -14 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c58cb10 rbx 0xfffffd800470c7a0 rdx 0xffff80000144a480 rcx 0xffff80002a33acf0 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c58c9f0 r9 0x8080808080808080 r10 0x5d0110eda82048ee r11 0xed94820edd5cc42e r12 0 r13 0xfffffd8003f24f00 r14 0x3 r15 0xffffffff rip 0xffffffff810240e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c58cb00 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=418060 pid=62606 tcnt=2 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=0xffff80002a33aa60,0xffff80002a33b220 process=0xffff80003c56c4c0 user=0xffff80003c588000, vmspace=0xfffffd806bc7dad0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 73729 200291 76679 0 2 0 syz-executor 53046 379356 61861 0 7 0 syz-executor 53046 170796 61861 0 2 0x4000000 syz-executor 91534 316785 6166 0 2 0 syz-executor 91534 60500 6166 0 3 0x4000080 fsleep syz-executor 62606 478136 61452 -1 2 0x1000010 syz-executor *62606 418060 61452 -1 7 0x5000010 syz-executor 60257 100189 52067 0 2 0 syz-executor 60257 238372 52067 0 3 0x4000080 kqsel syz-executor 60257 168829 52067 0 3 0x4000080 fsleep syz-executor 26548 435259 69049 0 2 0 syz-executor 26548 335185 69049 0 3 0x4000080 kqsel syz-executor 26548 24430 69049 0 3 0x4000080 fsleep syz-executor 26548 443665 69049 0 3 0x4000080 fsleep syz-executor 57249 523221 1437 0 2 0 syz-executor 57249 181008 1437 0 3 0x4000080 rest syz-executor 57249 430961 1437 0 3 0x4000080 fsleep syz-executor 60296 198011 0 0 3 0x14200 acct acct 6166 411870 54105 0 3 0x82 nanoslp syz-executor 48943 347089 0 0 3 0x14200 bored sosplice 93615 101335 1 0 3 0x100083 ttyin getty 26400 414835 0 0 3 0x14280 nfsidl nfsio 5026 415845 0 0 3 0x14280 nfsidl nfsio 20894 410447 0 0 3 0x14280 nfsidl nfsio 30076 483849 0 0 3 0x14280 nfsidl nfsio 94659 211167 0 0 3 0x14280 nfsidl nfsio 34530 49953 0 0 3 0x14280 nfsidl nfsio 39164 520423 0 0 3 0x14280 nfsidl nfsio 63639 340793 0 0 3 0x14280 nfsidl nfsio 59942 35368 0 0 3 0x14280 nfsidl nfsio 92956 69713 0 0 3 0x14280 nfsidl nfsio 6439 40545 0 0 3 0x14280 nfsidl nfsio 70872 140436 0 0 3 0x14280 nfsidl nfsio 62429 218144 0 0 3 0x14280 nfsidl nfsio 95842 203034 0 0 3 0x14280 nfsidl nfsio 32687 33028 0 0 3 0x14280 nfsidl nfsio 84408 86287 0 0 3 0x14280 nfsidl nfsio 77732 263865 0 0 3 0x14280 nfsidl nfsio 79990 335217 0 0 3 0x14280 nfsidl nfsio 51348 107393 0 0 3 0x14280 nfsidl nfsio 65654 519572 0 0 3 0x14280 nfsidl nfsio 61452 394431 54105 0 3 0x82 nanoslp syz-executor 76679 118022 54105 0 3 0x82 nanoslp syz-executor 52067 307379 54105 0 2 0x2 syz-executor 1437 301309 54105 0 3 0x82 nanoslp syz-executor 69049 299084 54105 0 3 0x82 nanoslp syz-executor 61861 242445 54105 0 3 0x82 nanoslp syz-executor 61214 323799 54105 0 3 0x82 nanoslp syz-executor 54105 332102 6072 0 3 0x82 kqread syz-executor 6072 272273 87194 0 3 0x10008a sigsusp ksh 87194 452192 16674 0 3 0x98 kqread sshd-session 16674 459370 40077 0 3 0x92 kqread sshd-session 40077 379542 1 0 3 0x88 kqread sshd 93749 343269 67278 74 3 0x1100092 bpf pflogd 67278 511207 1 0 3 0x80 sbwait pflogd 44009 183260 62736 73 3 0x1100090 kqread syslogd 62736 50348 1 0 3 0x100082 sbwait syslogd 29288 305745 1 0 3 0x100080 kqread resolvd 13680 261924 91694 77 3 0x100092 kqread dhcpleased 82055 150212 91694 77 3 0x100092 kqread dhcpleased 91694 49243 1 0 3 0x80 kqread dhcpleased 47533 411802 0 0 3 0x14200 bored smr 31128 414301 0 0 3 0x14200 pgzero zerothread 87319 387342 0 0 3 0x14200 aiodoned aiodoned 4140 92048 0 0 3 0x14200 syncer update 74393 80392 0 0 3 0x14200 cleaner cleaner 32505 332027 0 0 3 0x14200 reaper reaper 22898 36637 0 0 3 0x14200 pgdaemon pagedaemon 97640 374399 0 0 3 0x14200 bored viomb 30673 66081 0 0 3 0x40014200 acpi0 acpi0 39609 450199 0 0 3 0x40014200 idle1 77832 145714 0 0 3 0x14200 bored softnet3 90074 406162 0 0 3 0x14200 bored softnet2 72941 140410 0 0 3 0x14200 bored softnet1 74292 396781 0 0 2 0x14200 softnet0 33548 92950 0 0 3 0x14200 bored systqmp 73683 510080 0 0 3 0x14200 bored systq 42008 324986 0 0 3 0x14200 tmoslp softclockmp 79625 71906 0 0 3 0x40014200 tmoslp softclock 43512 442150 0 0 3 0x40014200 idle0 1 327133 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 62606 (syz-executor) thread 0xffff80002a33acf0 (418060) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83906af8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 unp_externalize+0x14e #2 soreceive+0xc73 sys/kern/uipc_socket.c:1021 #3 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #4 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 #5 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive rwlock sbufrcv r = 0 (0xffff800010fd4bb0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 sblock+0xb7 sys/kern/uipc_socket2.c:536 #3 soreceive+0x28e sys/kern/uipc_socket.c:882 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1072 #5 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 #6 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 11226K 11686K 166960K 12751 0 pcb 18 15K 17K 166960K 388 0 rtable 197 9K 9K 166960K 514 0 pf 35 17K 25K 166960K 134 0 ifaddr 38 6K 8K 166960K 99 0 ifgroup 55 2K 2K 166960K 166 0 sysctl 4 1K 1K 166960K 4 0 counters 64 36K 37K 166960K 304 0 ioctlops 0 0K 4K 166960K 1643 0 iov 0 0K 32K 166960K 50 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 91K 166960K 2349 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 14K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 29 6K 6K 166960K 69 0 dirhash 12 2K 3K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 106K 166960K 1043 0 sigio 0 0K 0K 166960K 19 0 proc 72 91K 115K 166960K 668 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 114 0 in_multi 77 5K 7K 166960K 149 0 ether_multi 1 0K 0K 166960K 3 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 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 489 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 240 73K 86K 166960K 11310 0 UVM aobj 19 2K 2K 166960K 24 0 pinsyscall 43 86K 100K 166960K 2179 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 59 0 NDP 12 0K 2K 166960K 63 0 temp 72 8646K 8901K 166960K 44391 0 kqueue 13 20K 30K 166960K 189 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 98 0 95 1 0 1 1 0 8 0 rtentry 112 152 0 69 4 0 4 4 0 8 0 unpcb 144 577 0 557 5 4 1 4 0 8 0 syncache 336 12 0 12 3 3 0 1 0 8 0 tcpqe 32 5 0 5 3 3 0 1 0 8 0 tcpcb 808 325 0 311 12 10 2 8 0 8 0 arp 120 23 0 8 1 0 1 1 0 8 0 inpcb 376 1314 0 1295 12 9 3 11 0 8 1 nd6 136 29 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1168 105 0 105 2 1 1 1 0 8 1 pppxif 1472 11 0 11 3 3 0 1 0 8 0 pffrag 232 7 0 3 1 0 1 1 0 482 0 pffrnode 88 7 0 3 1 0 1 1 0 8 0 pffrent 40 10 0 6 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 72 0 27 1 0 1 1 0 8 0 pfstkey 128 72 0 27 2 0 2 2 0 8 0 pfstate 376 72 0 27 6 0 6 6 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 666 0 296 31 7 24 31 0 8 0 art_table 32 670 0 296 4 0 4 4 0 8 0 art_node 16 149 0 76 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 21 1 0 1 1 0 8 0 semupl 112 4 0 4 3 2 1 1 0 8 1 semapl 112 62 0 35 1 0 1 1 0 8 0 shmpl 112 21 0 5 1 0 1 1 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 3396 0 1889 95 0 95 95 0 8 0 ffsino 280 3396 0 1889 109 0 109 109 0 8 0 nchpl 144 4840 0 3155 64 1 63 64 0 8 0 rtmask 32 4 0 4 1 1 0 1 0 8 0 uvmvnodes 80 4015 0 0 82 0 82 82 0 8 0 vnodes 216 4015 0 0 224 0 224 224 0 8 0 namei 1024 17046 0 17046 1 0 1 1 0 8 1 percpumem 16 166 0 120 1 0 1 1 0 8 0 kstatmem 264 90 0 66 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 16980 0 16980 11 10 1 8 1 8 1 plimitpl 152 215 0 196 1 0 1 1 0 8 0 sigapl 424 1363 0 1291 9 0 9 9 0 8 0 futexpl 64 14069 0 14064 1 0 1 1 0 8 0 knotepl 120 575 0 0 17 0 17 17 0 8 0 kqueuepl 216 363 0 351 3 2 1 3 0 8 0 pipepl 328 173 0 145 3 0 3 3 0 8 0 fdescpl 504 1322 0 1290 5 0 5 5 0 8 0 filepl 152 8621 0 8387 15 4 11 14 0 8 1 lockfpl 104 468 0 465 1 0 1 1 0 8 0 lockfspl 48 130 0 127 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 42 0 25 1 0 1 1 0 8 0 ucredpl 104 1429 0 1415 1 0 1 1 0 8 0 zombiepl 144 1292 0 1291 1 0 1 1 0 8 0 processpl 1176 1363 0 1291 6 0 6 6 0 8 0 procpl 656 2887 0 2805 8 0 8 8 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 4 0 4 2 2 0 1 0 8 0 sockpl 688 2006 0 1964 18 13 5 16 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 125 0 0 4 0 4 4 0 8 0 mbufpl 256 365 0 0 23 0 23 23 0 8 0 bufpl 280 7466 0 1312 440 0 440 440 0 8 0 anonpl 24 205166 0 200190 115 74 41 105 0 184 3 amapchunkpl 152 36905 0 36313 37 12 25 31 0 158 1 amappl16 200 4057 0 3998 58 51 7 42 0 8 1 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 128 0 115 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1989 0 1957 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 271 0 271 1 1 0 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 114 0 102 1 0 1 1 0 8 0 amappl6 120 195 0 192 1 0 1 1 0 8 0 amappl5 112 132 0 123 1 0 1 1 0 8 0 amappl4 104 343 0 324 1 0 1 1 0 8 0 amappl3 96 7286 0 7166 4 0 4 4 0 8 0 amappl2 88 728 0 666 2 0 2 2 0 8 0 amappl1 80 12216 0 11639 14 0 14 14 0 8 0 amappl 88 10834 0 10650 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 128 254 0 254 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 23 0 5 1 0 1 1 0 8 0 uaddrrnd 24 1322 0 1290 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1322 0 1290 1 0 1 1 0 8 0 vmmpekpl 168 12440 0 12399 3 0 3 3 0 8 0 vmmpepl 168 87209 0 85248 124 35 89 118 0 357 2 vmsppl 456 1321 0 1290 5 0 5 5 0 8 0 rwobjpl 64 29545 0 24529 87 4 83 87 0 8 0 pdppl 4096 2651 0 2580 109 38 71 83 0 8 0 pvpl 32 24866 0 0 202 1 201 201 0 265 0 pmappl 248 1321 0 1290 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 316 0 63 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(ffffffff8383aff0) 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(ffffffff839068f0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839068f0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c54c070,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff839068f0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff839068f0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 softintr_dispatch(0) at softintr_dispatch+0x5b sys/arch/amd64/amd64/softintr.c:88 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x79ee01f311c0, count: -9 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(fffffd806dd7def8,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd7dee0,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd7dee0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd805ee2ad88,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd805ee2ad88,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vfs_getcwd_common(fffffd805ee2ad88,fffffd805ee2a008,0,0,200,0,b6ead4344fa85164) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd805ee2ad88,fffffd805ee2a008,ffff80002a33acf0) at vn_isunder+0x56 sys/kern/vfs_vnops.c:694 unp_externalize(fffffd8069c73300,33,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1086 soreceive(ffff800010fd4ad0,ffff80003c58d088,ffff80003c58d038,0,ffff80003c58d078,ffff80003c58d1fc,936510cc992f0ed6) at soreceive+0xc73 sys/kern/uipc_socket.c:1021 recvit(ffff80002a33acf0,b,ffff80003c58d1d0,0,ffff80003c58d280) at recvit+0x40a sys/kern/uipc_syscalls.c:1072 sys_recvmsg(ffff80002a33acf0,ffff80003c58d330,ffff80003c58d280) at sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:872 syscall(ffff80003c58d330) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c58d330) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x282f7eba0c0, count: -14