login: ./file0 ./file0 κΟwitness: lock order reversal: 1st 0xffff80000130eb80 sbufrcv (&so->so_rcv.sb_lock) 2nd 0xfffffd806e0de920 inode (&ip->i_lock) lock order [1] sbufrcv (&so->so_rcv.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff830f41a4 -> 0xffffffff83071f68 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+0x295 sys/kern/uipc_socket.c:945 #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:178 [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(fffffd806e0de920,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806e0de910,1) at rw_enter+0x122 rrw_enter(fffffd806e0de910,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8067f17c20,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8067f17c20,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_getcwd_common(fffffd8067f17c20,fffffd806709eeb0,0,0,200,0,deb56eb1563bf1ac) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd8067f17c20,fffffd806709eeb0,ffff8000ffff4f58) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688 unp_externalize(fffffd807eb7d400,101,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1094 soreceive(ffff80000130eab0,ffff80003720aa38,ffff80003720a9e8,0,ffff80003720aa28,ffff80003720abac,d1ac2dea7801844a) at soreceive+0xd3e sys/kern/uipc_socket.c:1090 recvit(ffff8000ffff4f58,5,ffff80003720ab80,0,ffff80003720ab70) at recvit+0x40a sys/kern/uipc_syscalls.c:1079 sys_recvmmsg(ffff8000ffff4f58,ffff80003720ad40,ffff80003720ac90) at sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:970 syscall(ffff80003720ad40) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003720ad40) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7637ea097e0, count: -14 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff80003720a490 rbx 0xfffffd80042c8680 rdx 0xffff8000012ad800 rcx 0xffff8000ffff4f58 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff80003720a370 r9 0x8080808080808080 r10 0xaad4a55a8b1ee1 r11 0xcca87e9aa38ac0ed r12 0 r13 0xfffffd8003adfe00 r14 0x3 r15 0xffffffff rip 0xffffffff812ecd15 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003720a480 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=186572 pid=27032 tcnt=3 stat=onproc flags process=1000000 proc=4000000 runpri=24, usrpri=50, slppri=24, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff4028,0xffff800033591990 process=0xffff8000ffff1238 user=0xffff800037205000, vmspace=0xfffffd806ba538e8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 5105 279002 67558 0 2 0 syz-executor 5105 32156 67558 0 2 0x4000000 syz-executor 27032 264312 50718 0 7 0x1000000 syz-executor *27032 186572 50718 0 7 0x5000000 syz-executor 27032 468577 50718 0 2 0x5000000 syz-executor 37237 75765 83933 60928 2 0x10 syz-executor 37237 465305 83933 60928 3 0x4000090 sbwait syz-executor 37237 79588 83933 60928 3 0x4000010 inode syz-executor 37237 403331 83933 60928 3 0x4000010 inode syz-executor 17018 455938 58534 0 2 0 syz-executor 17018 206754 58534 0 3 0x4000080 pipewr syz-executor 17018 284025 58534 0 3 0x4000080 fsleep syz-executor 62229 443661 50456 0 3 0x80 nanoslp syz-executor 62229 461931 50456 0 3 0x4000080 kqread syz-executor 62229 327258 50456 0 3 0x4000080 fsleep syz-executor 67558 457452 50833 0 3 0x82 nanoslp syz-executor 28028 459870 0 0 3 0x14200 acct acct 5450 477968 0 0 3 0x14200 bored sosplice 11067 469716 1 0 3 0x100083 ttyin getty 69540 188881 50833 0 3 0x82 piperd syz-executor 50718 216836 50833 0 3 0x82 nanoslp syz-executor 24810 337567 50833 0 3 0x82 wait syz-executor 83933 500446 50833 0 3 0x82 nanoslp syz-executor 59004 162393 50833 0 3 0x82 piperd syz-executor 50456 109071 50833 0 3 0x82 nanoslp syz-executor 58534 424828 50833 0 3 0x82 nanoslp syz-executor 50833 46318 40310 0 2 0x2 syz-executor 40310 22697 76574 0 3 0x10008a sigsusp ksh 76574 445194 77572 0 3 0x98 kqread sshd-session 77572 380649 527 0 3 0x92 kqread sshd-session 527 178867 1 0 3 0x88 kqread sshd 84411 476595 17416 74 3 0x1100092 bpf pflogd 17416 481233 1 0 3 0x80 sbwait pflogd 45107 308486 90103 73 3 0x1100090 kqread syslogd 90103 92753 1 0 3 0x100082 sbwait syslogd 87738 158856 1 0 3 0x100080 kqread resolvd 17196 434842 16328 77 3 0x100092 kqread dhcpleased 26116 342250 16328 77 3 0x100092 kqread dhcpleased 16328 439489 1 0 3 0x80 kqread dhcpleased 83783 414080 0 0 3 0x14200 bored smr 37066 30844 0 0 2 0x14200 zerothread 8756 219302 0 0 3 0x14200 aiodoned aiodoned 66401 198487 0 0 3 0x14200 syncer update 85853 318537 0 0 3 0x14200 cleaner cleaner 59668 397469 0 0 3 0x14200 reaper reaper 6406 412463 0 0 3 0x14200 pgdaemon pagedaemon 96892 514005 0 0 3 0x14200 bored viomb 79679 384075 0 0 3 0x40014200 acpi0 acpi0 33354 163111 0 0 3 0x40014200 idle1 47677 350716 0 0 3 0x14200 bored softnet3 26474 383213 0 0 3 0x14200 bored softnet2 4845 297229 0 0 3 0x14200 bored softnet1 7231 105615 0 0 3 0x14200 bored softnet0 43856 24813 0 0 3 0x14200 bored systqmp 72671 244177 0 0 3 0x14200 bored systq 11116 84264 0 0 3 0x14200 tmoslp softclockmp 46676 67832 0 0 3 0x40014200 tmoslp softclock 85907 341185 0 0 3 0x40014200 idle0 1 359476 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 27032 (syz-executor) thread 0xffff8000ffff4f58 (186572) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff836258d8) #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+0xd3e sys/kern/uipc_socket.c:1090 #3 recvit+0x40a sys/kern/uipc_syscalls.c:1079 #4 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:970 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 exclusive rwlock sbufrcv r = 0 (0xffff80000130eb80) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sblock+0xb7 sys/kern/uipc_socket2.c:549 #3 soreceive+0x295 sys/kern/uipc_socket.c:945 #4 recvit+0x40a sys/kern/uipc_syscalls.c:1079 #5 sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:970 #6 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 37237 (syz-executor) thread 0xffff8000335911e8 (465305) exclusive rrwlock inode r = 0 (0xfffffd806e0de0a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:169 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #9 namei+0x7aa sys/kern/vfs_lookup.c:250 #10 vn_open+0x13f sys/kern/vfs_vnops.c:140 #11 vndioctl+0xcb1 sys/dev/vnd.c:457 #12 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #13 vn_ioctl+0xf6 sys/kern/vfs_vnops.c:525 #14 sys_ioctl+0x67c #15 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #15 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #16 Xsyscall+0x128 Process 37237 (syz-executor) thread 0xffff8000ffff4538 (79588) exclusive rrwlock inode r = 0 (0xfffffd806bf4b4e0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3084 #8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10194 11187K 11435K 166960K 11514 0 pcb 17 13K 13K 166960K 46 0 rtable 238 6K 7K 166960K 403 0 pf 34 17K 18K 166960K 51 0 ifaddr 43 7K 7K 166960K 51 0 ifgroup 55 2K 2K 166960K 67 0 sysctl 2 0K 0K 166960K 2 0 counters 64 36K 36K 166960K 70 0 ioctlops 0 0K 4K 166960K 1490 0 iov 0 0K 16K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1429 90K 90K 166960K 1558 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 16 57K 93K 166960K 321 0 sigio 0 0K 0K 166960K 1 0 proc 72 91K 115K 166960K 578 0 subproc 104 6K 6K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 16 0 in_multi 99 7K 7K 166960K 111 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 2K 166960K 404 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 233 73K 75K 166960K 4480 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 41 82K 104K 166960K 1460 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 7 0 NDP 12 0K 2K 166960K 33 0 temp 37 6819K 6883K 166960K 5008 0 kqueue 13 20K 26K 166960K 42 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 55 0 52 1 0 1 1 0 8 0 rtentry 112 124 0 12 4 0 4 4 0 8 0 unpcb 144 94 0 73 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 808 46 0 41 1 0 1 1 0 8 0 arp 120 21 0 2 1 0 1 1 0 8 0 inpcb 336 269 0 257 9 0 9 9 0 8 7 nd6 136 27 0 3 1 0 1 1 0 8 0 kcovpl 48 9 0 1 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 28 0 0 1 0 1 1 0 8 0 pfstkey 128 28 0 0 1 0 1 1 0 8 0 pfstate 376 28 0 0 3 0 3 3 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 497 0 44 29 0 29 29 0 8 0 art_table 32 498 0 44 4 0 4 4 0 8 0 art_node 16 123 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 112 6 0 1 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1824 0 317 95 0 95 95 0 8 0 ffsino 272 1824 0 317 101 0 101 101 0 8 0 nchpl 144 2247 0 560 63 0 63 63 0 8 0 uvmvnodes 80 2076 0 0 43 0 43 43 0 8 0 vnodes 216 2076 0 0 116 0 116 116 0 8 0 namei 1024 7015 0 7013 2 0 2 2 0 8 1 percpumem 16 49 0 3 1 0 1 1 0 8 0 kstatmem 264 30 0 6 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 6451 0 6451 3 1 2 2 1 8 2 plimitpl 152 46 0 29 1 0 1 1 0 8 0 sigapl 424 632 0 582 8 1 7 7 0 8 0 futexpl 64 2199 0 2197 1 0 1 1 0 8 0 knotepl 120 270 0 0 9 0 9 9 0 8 0 kqueuepl 216 77 0 66 3 0 3 3 0 8 2 pipepl 320 123 0 95 3 0 3 3 0 8 0 fdescpl 496 612 0 582 5 0 5 5 0 8 0 filepl 152 2510 0 2254 15 0 15 15 0 8 4 lockfpl 104 34 0 32 1 0 1 1 0 8 0 lockfspl 48 17 0 15 1 0 1 1 0 8 0 sessionpl 144 24 0 15 1 0 1 1 0 8 0 pgrppl 48 35 0 18 1 0 1 1 0 8 0 ucredpl 104 230 0 215 1 0 1 1 0 8 0 zombiepl 144 583 0 582 1 0 1 1 0 8 0 processpl 1160 632 0 582 5 0 5 5 0 8 1 procpl 648 881 0 821 7 1 6 6 0 8 0 srpgc 96 2 0 2 1 0 1 1 0 8 1 sosppl 168 7 0 7 1 0 1 1 0 8 1 sockpl 664 421 0 387 11 0 11 11 0 8 7 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 137 0 0 18 0 18 18 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 155 0 0 11 1 10 11 0 8 0 bufpl 280 2445 0 98 168 0 168 168 0 8 0 anonpl 24 166313 0 162913 50 4 46 46 0 185 23 amapchunkpl 152 14805 0 14323 27 0 27 27 0 158 6 amappl16 200 4387 0 4368 16 2 14 14 0 8 11 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 123 0 111 1 0 1 1 0 8 0 amappl13 176 14 0 14 1 1 0 1 0 8 0 amappl12 168 1291 0 1261 4 1 3 3 0 8 1 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 170 0 170 1 1 0 1 0 8 0 amappl8 136 34 0 31 2 1 1 1 0 8 0 amappl7 128 134 0 122 1 0 1 1 0 8 0 amappl6 120 197 0 196 1 0 1 1 0 8 0 amappl5 112 146 0 133 1 0 1 1 0 8 0 amappl4 104 343 0 323 1 0 1 1 0 8 0 amappl3 96 2600 0 2506 3 0 3 3 0 8 0 amappl2 88 877 0 796 2 0 2 2 0 8 0 amappl1 80 8227 0 7660 14 0 14 14 0 8 1 amappl 88 4082 0 3913 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 612 0 582 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 612 0 582 1 0 1 1 0 8 0 vmmpekpl 168 6101 0 6061 3 0 3 3 0 8 0 vmmpepl 168 45717 0 43907 93 1 92 92 0 357 8 vmsppl 448 611 0 582 6 1 5 5 0 8 1 rwobjpl 56 19008 0 16003 45 0 45 45 0 8 2 pdppl 4096 1231 0 1164 99 26 73 85 0 8 6 pvpl 32 14021 0 0 113 0 113 113 0 265 0 pmappl 248 611 0 582 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 386 0 30 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(ffffffff8348eff0) 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(ffffffff836256d0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff836256d0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371da8a0,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff836256d0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff836256d0) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371daa00,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff836256d0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff836256d0) 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: 0x70a015219f80, 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(fffffd806e0de920,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806e0de910,1) at rw_enter+0x122 rrw_enter(fffffd806e0de910,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd8067f17c20,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd8067f17c20,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_getcwd_common(fffffd8067f17c20,fffffd806709eeb0,0,0,200,0,deb56eb1563bf1ac) at vfs_getcwd_common+0xd1 sys/kern/vfs_getcwd.c:287 vn_isunder(fffffd8067f17c20,fffffd806709eeb0,ffff8000ffff4f58) at vn_isunder+0x56 sys/kern/vfs_vnops.c:688 unp_externalize(fffffd807eb7d400,101,0) at unp_externalize+0x286 sys/kern/uipc_usrreq.c:1094 soreceive(ffff80000130eab0,ffff80003720aa38,ffff80003720a9e8,0,ffff80003720aa28,ffff80003720abac,d1ac2dea7801844a) at soreceive+0xd3e sys/kern/uipc_socket.c:1090 recvit(ffff8000ffff4f58,5,ffff80003720ab80,0,ffff80003720ab70) at recvit+0x40a sys/kern/uipc_syscalls.c:1079 sys_recvmmsg(ffff8000ffff4f58,ffff80003720ad40,ffff80003720ac90) at sys_recvmmsg+0x3d3 sys/kern/uipc_syscalls.c:970 syscall(ffff80003720ad40) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80003720ad40) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7637ea097e0, count: -14