witness: lock order reversal: 1st 0xffff800001311938 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806de0dc50 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff830be9a1 -> 0xffffffff8306b4aa 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+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 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+0x3f4 sys/kern/uipc_socket.c:1454 #3 sys_setsockopt+0x2ba sys/kern/uipc_syscalls.c:1228 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Stopped at db_enter+0x25: addq $0x8,%rsp ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd806de0dc50,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806de0dc40,1) at rw_enter+0x122 rrw_enter(fffffd806de0dc40,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd807e1811b8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd807e1811b8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff800037223c88) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff800037223c88) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff800001311790,fffffd806be8ed00,ffff8000371a6a50) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff800001311790,fffffd806be5f900,fffffd806be8ed00,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff800001311790,fffffd806be8ed00,ffff800037223f18,0,0,0) at sosend+0xa40 sendit(ffff8000371a6a50,3,ffff800037224090,0,ffff800037224150) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff8000371a6a50,ffff800037224200,ffff800037224150) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff800037224200) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037224200) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x34a2fba8570, count: -15 ddb{0}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff8000372238e0 rbx 0xfffffd80042c2e88 rdx 0xffff8000012a9bc0 rcx 0xffff8000371a6a50 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff8000372237c0 r9 0x8080808080808080 r10 0x3c77a6de4f99f43c r11 0x1acffa53ddc3f969 r12 0 r13 0xfffffd8003adae00 r14 0x3 r15 0xffffffff rip 0xffffffff81610e15 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000372238d0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=422778 pid=79666 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000371a71e8,0xffff8000371a87d0 process=0xffff8000ffff1fd8 user=0xffff80003721f000, vmspace=0xfffffd806c153718 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 79666 189269 15551 0 7 0 syz-executor *79666 422778 15551 0 7 0x4000000 syz-executor 51060 109726 82203 0 2 0 syz-executor 51060 98699 82203 0 3 0x4000000 biowait syz-executor 97607 505068 45477 0 2 0 syz-executor 21768 37655 65074 0 2 0 syz-executor 21768 109176 65074 0 2 0x4000000 syz-executor 73103 96792 37674 0 3 0x80 nanoslp syz-executor 73103 186541 37674 0 3 0x4000080 fsleep syz-executor 73103 464604 37674 0 2 0x4000000 syz-executor 73103 409995 37674 0 3 0x4000080 fsleep syz-executor 21884 67059 9761 0 2 0 syz-executor 21884 318072 9761 0 3 0x4000080 fsleep syz-executor 12642 46030 26291 0 2 0 syz-executor 12642 191605 26291 0 3 0x4000080 fsleep syz-executor 12642 308630 26291 0 3 0x4000080 fsleep syz-executor 12642 294114 26291 0 2 0x4000000 syz-executor 45477 497046 74747 0 3 0x82 nanoslp syz-executor 27940 46318 1 0 3 0x100083 ttyin getty 26291 57477 74747 0 3 0x82 nanoslp syz-executor 9761 419135 74747 0 3 0x82 nanoslp syz-executor 19643 372596 74747 0 3 0x82 piperd syz-executor 37674 213132 74747 0 2 0x2 syz-executor 11486 57047 0 0 3 0x14280 nfsidl nfsio 41762 222627 0 0 3 0x14280 nfsidl nfsio 93670 333529 0 0 3 0x14280 nfsidl nfsio 82367 350827 0 0 3 0x14280 nfsidl nfsio 44587 501039 0 0 3 0x14280 nfsidl nfsio 31389 244021 0 0 3 0x14280 nfsidl nfsio 914 473601 0 0 3 0x14280 nfsidl nfsio 52088 134583 0 0 3 0x14280 nfsidl nfsio 29091 437912 0 0 3 0x14280 nfsidl nfsio 5382 341387 0 0 3 0x14280 nfsidl nfsio 55770 69881 0 0 3 0x14280 nfsidl nfsio 74786 444720 0 0 3 0x14280 nfsidl nfsio 76289 182693 0 0 3 0x14280 nfsidl nfsio 87372 342977 0 0 3 0x14280 nfsidl nfsio 51648 440759 0 0 3 0x14280 nfsidl nfsio 20898 178631 0 0 3 0x14280 nfsidl nfsio 11623 258274 0 0 3 0x14280 nfsidl nfsio 15052 97918 0 0 3 0x14280 nfsidl nfsio 67136 281367 0 0 3 0x14280 nfsidl nfsio 91432 329868 0 0 3 0x14280 nfsidl nfsio 27819 489124 37116 0 3 0x82 netio sshd-session 36631 18538 0 0 3 0x14200 bored sosplice 87195 162126 74819 0 3 0x100082 sbwait arp 74819 341591 1 0 3 0x10008a sigsusp sh 15551 250676 74747 0 3 0x82 nanoslp syz-executor 82203 472877 74747 0 3 0x82 nanoslp syz-executor 65074 383842 74747 0 3 0x82 nanoslp syz-executor 74747 231311 29577 0 2 0x2 syz-executor 29577 125703 53950 0 3 0x10008a sigsusp ksh 53950 292856 85157 0 3 0x98 kqread sshd-session 85157 260098 37116 0 3 0x92 kqread sshd-session 37116 226585 1 0 3 0x88 kqread sshd 22534 219107 5343 74 3 0x1100092 bpf pflogd 5343 33030 1 0 3 0x80 sbwait pflogd 79758 216318 55792 73 3 0x1100090 kqread syslogd 55792 231259 1 0 3 0x100082 sbwait syslogd 17960 117264 1 0 3 0x100080 kqread resolvd 78743 186849 35642 77 3 0x100092 kqread dhcpleased 6106 367241 35642 77 3 0x100092 kqread dhcpleased 35642 412746 1 0 3 0x80 kqread dhcpleased 94883 4392 0 0 3 0x14200 bored smr 90291 41393 0 0 2 0x14200 zerothread 12349 241358 0 0 3 0x14200 aiodoned aiodoned 8482 177780 0 0 3 0x14200 syncer update 87215 41455 0 0 3 0x14200 cleaner cleaner 93859 304151 0 0 3 0x14200 reaper reaper 49356 281603 0 0 3 0x14200 pgdaemon pagedaemon 94369 199260 0 0 3 0x14200 bored viomb 53543 465354 0 0 3 0x40014200 acpi0 acpi0 30257 118916 0 0 3 0x40014200 idle1 80034 283124 0 0 3 0x14200 bored softnet3 71998 335475 0 0 3 0x14200 bored softnet2 56732 462635 0 0 3 0x14200 bored softnet1 18450 20468 0 0 3 0x14200 bored softnet0 2931 106020 0 0 3 0x14200 bored systqmp 29144 513356 0 0 3 0x14200 bored systq 62736 142417 0 0 3 0x14200 tmoslp softclockmp 37130 160796 0 0 3 0x40014200 tmoslp softclock 27984 222086 0 0 3 0x40014200 idle0 1 346447 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 79666 (syz-executor) thread 0xffff8000371a6a50 (422778) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8359d538) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 unp_connect+0x26c sys/kern/uipc_usrreq.c:868 #2 uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 #3 sosend+0xa40 #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:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff800001311938) #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 sosend+0x2ff sys/kern/uipc_socket.c:681 #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:178 [inline] #6 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 51060 (syz-executor) thread 0xffff8000371a87c0 (98699) exclusive rrwlock inode r = 0 (0xfffffd806f46ff88) #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 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1732 #8 ufs_mknod+0x5b sys/ufs/ufs/ufs_vnops.c:167 #9 VOP_MKNOD+0x102 sys/kern/vfs_vops.c:121 #10 domknodat+0x47e sys/kern/vfs_syscalls.c:1624 #11 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:178 [inline] #11 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806dcd22b8) #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 domknodat+0xb4 sys/kern/vfs_syscalls.c:1576 #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11207K 15281K 166960K 15643 0 pcb 17 18K 20K 166960K 715 0 rtable 209 7K 8K 166960K 808 0 pf 37 18K 20K 166960K 214 0 ifaddr 42 7K 8K 166960K 132 0 ifgroup 55 2K 2K 166960K 193 0 sysctl 4 1K 5K 166960K 10 0 counters 64 36K 36K 166960K 144 0 ioctlops 0 0K 4K 166960K 1712 0 iov 0 0K 24K 166960K 166 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1685 106K 106K 166960K 3686 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 13K 166960K 40 0 VM map 2 1K 1K 166960K 2 0 sem 24 11K 11K 166960K 57 0 dirhash 12 2K 3K 166960K 60 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 19 69K 93K 166960K 2441 0 sigio 0 0K 0K 166960K 65 0 proc 72 91K 115K 166960K 999 0 subproc 117 7K 7K 166960K 208 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 420 0 in_multi 91 6K 7K 166960K 277 0 ether_multi 1 0K 0K 166960K 17 0 mrt 1 0K 0K 166960K 10 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 779 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 262 74K 93K 166960K 23900 0 UVM aobj 227 5K 5K 166960K 237 0 pinsyscall 47 94K 106K 166960K 3741 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 174 0 NDP 12 0K 1K 166960K 94 0 temp 75 6828K 6956K 166960K 117689 0 kqueue 15 20K 28K 166960K 388 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 192 0 188 2 1 1 2 0 8 0 rtentry 112 242 0 150 3 0 3 3 0 8 0 unpcb 144 1710 0 1688 14 12 2 6 0 8 1 syncache 336 7 0 7 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 946 0 939 25 18 7 11 0 8 5 arp 120 44 0 26 1 0 1 1 0 8 0 inpcb 336 3612 0 3601 33 22 11 13 0 8 8 nd6 136 50 0 28 1 0 1 1 0 8 0 pkpcb 40 9 0 9 3 2 1 1 0 8 1 kcovpl 48 16 0 7 1 0 1 1 0 8 0 ppxss 1168 17 0 17 7 6 1 1 0 8 1 pffrag 232 16 0 10 1 0 1 1 0 482 0 pffrnode 88 15 0 9 1 0 1 1 0 8 0 pffrent 40 30 0 24 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 24 167 0 81 1 0 1 1 0 8 0 pfstkey 128 171 0 85 3 0 3 3 0 8 0 pfstate 376 169 0 83 9 0 9 9 0 8 0 pfrule 1344 22 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 1048 0 592 37 6 31 32 0 8 2 art_table 32 1052 0 592 5 0 5 5 0 8 0 art_node 16 237 0 155 1 0 1 1 0 8 0 sysvmsgpl 40 19 0 10 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 51 0 29 1 0 1 1 0 8 0 shmpl 112 234 0 10 7 0 7 7 0 8 0 dirhash 1024 49 0 32 3 0 3 3 0 8 0 dino2pl 256 5638 0 4122 96 0 96 96 0 8 0 ffsino 272 5638 0 4122 102 0 102 102 0 8 0 nchpl 144 9051 0 7340 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 32082 0 32080 4 3 1 2 0 8 0 percpumem 16 86 0 40 1 0 1 1 0 8 0 kstatmem 264 104 0 80 2 0 2 2 0 8 0 scsiplug 72 9 0 9 5 5 0 1 0 8 0 scxspl 216 29237 0 29236 14 13 1 8 1 8 0 plimitpl 152 514 0 496 1 0 1 1 0 8 0 sigapl 424 2777 0 2704 9 0 9 9 0 8 0 futexpl 64 41834 0 41829 1 0 1 1 0 8 0 knotepl 120 804 0 0 25 0 25 25 0 8 0 kqueuepl 216 855 0 844 5 0 5 5 0 8 4 pipepl 320 577 0 546 7 3 4 6 0 8 1 fdescpl 496 2712 0 2678 5 0 5 5 0 8 0 filepl 152 19236 0 18966 31 13 18 21 0 8 5 lockfpl 104 998 0 996 3 2 1 2 0 8 0 lockfspl 48 317 0 315 1 0 1 1 0 8 0 sessionpl 144 37 0 27 1 0 1 1 0 8 0 pgrppl 48 95 0 76 1 0 1 1 0 8 0 ucredpl 104 3174 0 3160 1 0 1 1 0 8 0 zombiepl 144 2704 0 2704 3 2 1 1 0 8 1 processpl 1160 2777 0 2704 6 0 6 6 0 8 0 procpl 648 6351 0 6268 8 0 8 8 0 8 0 srpgc 96 14 0 14 6 6 0 1 0 8 0 sosppl 168 13 0 13 6 5 1 1 0 8 1 sockpl 664 5563 0 5527 40 28 12 15 0 8 8 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 155 0 0 20 0 20 20 0 8 0 mcl2k 2048 49 0 0 5 0 5 5 0 8 0 mtagpl 96 170 0 0 5 0 5 5 0 8 0 mbufpl 256 2331 0 0 146 0 146 146 0 8 0 bufpl 280 9846 0 3672 442 0 442 442 0 8 0 anonpl 24 423752 0 413488 155 82 73 101 0 185 3 amapchunkpl 152 78822 0 78170 47 10 37 37 0 158 8 amappl16 200 11623 0 11318 72 51 21 38 0 8 0 amappl15 192 9 0 9 2 1 1 1 0 8 1 amappl14 184 145 0 131 1 0 1 1 0 8 0 amappl13 176 14 0 14 2 2 0 1 0 8 0 amappl12 168 3482 0 3448 3 1 2 2 0 8 0 amappl11 160 60 0 46 1 0 1 1 0 8 0 amappl10 152 11 0 11 2 2 0 1 0 8 0 amappl9 144 125 0 125 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 126 0 111 1 0 1 1 0 8 0 amappl6 120 246 0 242 1 0 1 1 0 8 0 amappl5 112 170 0 157 1 0 1 1 0 8 0 amappl4 104 354 0 332 1 0 1 1 0 8 0 amappl3 96 14598 0 14497 5 1 4 4 0 8 1 amappl2 88 3050 0 2953 3 0 3 3 0 8 0 amappl1 80 15893 0 15229 16 0 16 16 0 8 0 amappl 88 23253 0 23062 6 0 6 6 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 3 0 3 2 2 0 1 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 255 0 255 3 3 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 236 0 10 5 0 5 5 0 8 0 uaddrrnd 24 2712 0 2678 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2712 0 2678 1 0 1 1 0 8 0 vmmpekpl 168 20762 0 20698 4 0 4 4 0 8 0 vmmpepl 168 172623 0 170266 150 33 117 121 0 357 7 vmsppl 448 2711 0 2678 6 2 4 5 0 8 0 rwobjpl 56 52937 0 45422 117 9 108 108 0 8 0 pdppl 4096 5431 0 5356 131 54 77 85 0 8 2 pvpl 32 24593 0 0 200 2 198 198 0 265 0 pmappl 248 2711 0 2678 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 635 0 121 15 0 15 15 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd806de0dc50,9,0) at witness_checkorder+0x1047 rw_enter(fffffd806de0dc40,1) at rw_enter+0x122 rrw_enter(fffffd806de0dc40,1) at rrw_enter+0xbe sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd807e1811b8,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd807e1811b8,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff800037223c88) at vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 namei(ffff800037223c88) at namei+0x7aa sys/kern/vfs_lookup.c:250 unp_connect(ffff800001311790,fffffd806be8ed00,ffff8000371a6a50) at unp_connect+0x27d sys/kern/uipc_usrreq.c:868 uipc_dgram_send(ffff800001311790,fffffd806be5f900,fffffd806be8ed00,0) at uipc_dgram_send+0x131 sys/kern/uipc_usrreq.c:607 sosend(ffff800001311790,fffffd806be8ed00,ffff800037223f18,0,0,0) at sosend+0xa40 sendit(ffff8000371a6a50,3,ffff800037224090,0,ffff800037224150) at sendit+0x721 sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff8000371a6a50,ffff800037224200,ffff800037224150) at sys_sendmsg+0x246 sys/kern/uipc_syscalls.c:604 syscall(ffff800037224200) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037224200) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x34a2fba8570, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029b7bff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:153 __mp_lock(ffffffff8359d330) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8359d330) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 syscall(ffff80002d774e30) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff80002d774e30) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c011d144d00, count: -7