witness: lock order reversal: 1st 0xffff800010fd64a0 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd806dad6f78 inode (&ip->i_lock) lock order [1] sbufsnd (&so->so_snd.sb_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff8292c146 -> 0xffffffff828d64a9 is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_enter+0xd1 #1 sblock+0x8a sys/kern/uipc_socket2.c:548 #2 soreceive+0x201 sys/kern/uipc_socket.c:876 #3 fifo_read+0xd2 sys/miscfs/fifofs/fifo_vnops.c:256 #4 VOP_READ+0xc3 sys/kern/vfs_vops.c:227 #5 vn_rdwr+0x10a #6 vndsetcred+0x86 sys/dev/vnd.c:684 #7 vndioctl+0xac1 sys/dev/vnd.c:485 #8 VOP_IOCTL+0x9a sys/kern/vfs_vops.c:264 #9 vn_ioctl+0xc0 sys/kern/vfs_vnops.c:525 #10 sys_ioctl+0x4a9 #11 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #11 syscall+0x8cf 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+0xd1 #1 sblock+0x8a sys/kern/uipc_socket2.c:548 #2 sosplice+0x2a7 sys/kern/uipc_socket.c:1385 #3 sys_setsockopt+0x1d7 sys/kern/uipc_syscalls.c:1231 #4 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #4 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 Stopped at db_enter+0x1c: 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd806dad6f78,9,0) at witness_checkorder+0xc05 rw_enter(fffffd806dad6f68,1) at rw_enter+0xd1 rrw_enter(fffffd806dad6f68,1) at rrw_enter+0x91 sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd80618fe548,2001) at VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 vn_lock(fffffd80618fe548,2001) at vn_lock+0x85 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff80002a2a01f8) at vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 namei(ffff80002a2a01f8) at namei+0x56a sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fd62f8,fffffd806cb43300,ffff80002a218d00) at unp_connect+0x1ce sys/kern/uipc_usrreq.c:864 uipc_dgram_send(ffff800010fd62f8,fffffd806ec2a200,fffffd806cb43300,0) at uipc_dgram_send+0xd7 sys/kern/uipc_usrreq.c:599 sosend(ffff800010fd62f8,fffffd806cb43300,ffff80002a2a0488,0,0,0) at sosend+0x7aa sendit(ffff80002a218d00,5,ffff80002a2a0600,0,ffff80002a2a06c0) at sendit+0x54c sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a218d00,ffff80002a2a0770,ffff80002a2a06c0) at sys_sendmsg+0x19b sys/kern/uipc_syscalls.c:604 syscall(ffff80002a2a0770) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002a2a0770) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xca3e052f710, count: -15 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff80002a29fe50 rbx 0xffffffff828e9404 pp_r600_decoded_lanes+0x2e88d rdx 0xffff800000ec8f40 rcx 0xffff80002a218d00 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff80002a29fd30 r9 0x8080808080808080 r10 0x43d52d9654193c3 r11 0xe516137fb3d1262c r12 0xfffffd8003b25a48 r13 0xfffffd800333ddc0 r14 0x3 r15 0xffffffff rip 0xffffffff81cae62c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a29fe40 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.7) tid=51471 pid=55845 tcnt=2 stat=onproc flags process=8000000 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a218550,0xffffffff82ea1428 process=0xffff80002d70ba40 user=0xffff80002a29b000, vmspace=0xfffffd807432d370 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55845 288027 48817 0 7 0x8000000 syz-executor.7 *55845 51471 48817 0 7 0xc000000 syz-executor.7 82382 354224 73598 0 3 0x8000080 nanoslp syz-executor.2 82382 113602 73598 0 3 0xc000080 fsleep syz-executor.2 82382 421624 73598 0 3 0xc000080 netacc syz-executor.2 56067 39923 60593 0 3 0x8000080 nanoslp syz-executor.6 56067 143634 60593 0 3 0xc000080 kqread syz-executor.6 56067 25239 60593 0 3 0xc000080 fsleep syz-executor.6 57516 395286 56714 0 3 0x8000080 nanoslp syz-executor.4 57516 57602 56714 0 3 0xc000080 kqpoll syz-executor.4 57516 206367 56714 0 3 0xc000080 sbwait syz-executor.4 57516 46055 56714 0 3 0xc000080 netcon syz-executor.4 48817 357390 86071 0 3 0x8000082 nanoslp syz-executor.7 22152 171817 25123 0 3 0x8000080 nanoslp syz-executor.1 22152 318763 25123 0 3 0xc000080 bell syz-executor.1 22152 291473 25123 0 3 0xc000080 fsleep syz-executor.1 88003 136774 52893 0 3 0x8000080 nanoslp syz-executor.5 88003 127642 52893 0 3 0xc000080 ttyout syz-executor.5 88003 284558 52893 0 3 0xc000080 lockf syz-executor.5 88003 354765 52893 0 3 0xc000080 fsleep syz-executor.5 24991 155775 34946 0 2 0x8000010 syz-executor.0 24991 198164 34946 0 3 0xc000090 fsleep syz-executor.0 24991 217942 34946 0 3 0xc000090 sbwait syz-executor.0 24991 185777 34946 0 3 0xc000090 fsleep syz-executor.0 25123 34230 86071 0 3 0x8000082 nanoslp syz-executor.1 73598 64743 86071 0 3 0x8000082 nanoslp syz-executor.2 60593 478170 86071 0 3 0x8000082 nanoslp syz-executor.6 52893 490933 86071 0 3 0x8000082 nanoslp syz-executor.5 43798 117057 86071 0 2 0x8000002 syz-executor.3 83449 33047 0 0 3 0x14280 nfsidl nfsio 68789 417814 0 0 3 0x14280 nfsidl nfsio 68205 431832 0 0 3 0x14280 nfsidl nfsio 40118 516550 0 0 3 0x14280 nfsidl nfsio 85336 257126 0 0 3 0x14280 nfsidl nfsio 98024 5394 0 0 3 0x14280 nfsidl nfsio 72986 511852 0 0 3 0x14280 nfsidl nfsio 36849 460938 0 0 3 0x14280 nfsidl nfsio 67415 225792 0 0 3 0x14280 nfsidl nfsio 75364 235848 0 0 3 0x14280 nfsidl nfsio 12141 229666 0 0 3 0x14280 nfsidl nfsio 81974 126660 0 0 3 0x14280 nfsidl nfsio 89168 317223 0 0 3 0x14280 nfsidl nfsio 74327 117452 0 0 3 0x14280 nfsidl nfsio 12671 88607 0 0 3 0x14280 nfsidl nfsio 85324 266578 0 0 3 0x14280 nfsidl nfsio 92051 278612 0 0 3 0x14280 nfsidl nfsio 70298 459419 0 0 3 0x14280 nfsidl nfsio 5621 65191 0 0 3 0x14280 nfsidl nfsio 50868 314444 0 0 3 0x14280 nfsidl nfsio 72001 488174 0 0 3 0x14200 bored sosplice 56714 250620 86071 0 3 0x8000082 nanoslp syz-executor.4 34946 284155 86071 0 3 0x8000082 nanoslp syz-executor.0 86071 491486 84013 0 3 0x1a000082 wait syz-fuzzer 86071 193508 84013 0 3 0x1e000082 nanoslp syz-fuzzer 86071 478812 84013 0 3 0x1e000082 wait syz-fuzzer 86071 162599 84013 0 3 0x1e000082 wait syz-fuzzer 86071 63827 84013 0 3 0x1e000082 wait syz-fuzzer 86071 166662 84013 0 3 0x1e000082 thrsleep syz-fuzzer 86071 99790 84013 0 3 0x1e000082 wait syz-fuzzer 86071 474850 84013 0 3 0x1e000082 thrsleep syz-fuzzer 86071 366416 84013 0 3 0x1e000082 thrsleep syz-fuzzer 86071 415395 84013 0 3 0x1e000082 thrsleep syz-fuzzer 86071 512486 84013 0 3 0x1e000082 thrsleep syz-fuzzer 86071 285343 84013 0 3 0x1e000082 wait syz-fuzzer 86071 460533 84013 0 2 0x1e000002 syz-fuzzer 86071 33483 84013 0 3 0x1e000082 wait syz-fuzzer 86071 305258 84013 0 2 0x1e000002 syz-fuzzer 86071 456574 84013 0 3 0x1e000082 wait syz-fuzzer 84013 492700 16530 0 3 0x810008a sigsusp ksh 16530 151645 13115 0 3 0x1800009a kqread sshd 20601 56205 1 0 3 0x18100083 ttyin getty 13115 323373 1 0 3 0x18000088 kqread sshd 54609 413087 36035 73 3 0x19100010 ffs_fsync syslogd 36035 38936 1 0 3 0x18100082 sbwait syslogd 45939 372308 1 0 3 0x18100080 kqread resolvd 56425 275174 90464 77 3 0x18100092 kqread dhcpleased 92229 15545 90464 77 3 0x18100092 kqread dhcpleased 90464 445192 1 0 3 0x18000080 kqread dhcpleased 77175 439158 0 0 3 0x14200 bored smr 59117 164796 0 0 3 0x14200 pgzero zerothread 66220 104805 0 0 3 0x14200 aiodoned aiodoned 17777 427396 0 0 3 0x14200 syncer update 71944 347516 0 0 3 0x14200 cleaner cleaner 30031 31967 0 0 3 0x14200 reaper reaper 44390 113250 0 0 3 0x14200 pgdaemon pagedaemon 25748 304974 0 0 3 0x14200 bored viomb 69149 360573 0 0 3 0x40014200 acpi0 acpi0 10741 417836 0 0 3 0x40014200 idle1 96006 6941 0 0 3 0x14200 bored softnet3 35469 440874 0 0 3 0x14200 bored softnet2 5423 343440 0 0 3 0x14200 bored softnet1 94278 32439 0 0 3 0x14200 bored softnet0 51146 466438 0 0 3 0x14200 bored systqmp 84294 521992 0 0 3 0x14200 bored systq 39316 305877 0 0 3 0x14200 tmoslp softclockmp 42298 432463 0 0 3 0x40014200 tmoslp softclock 24469 228730 0 0 3 0x40014200 idle0 1 215829 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 55845 (syz-executor.7) thread 0xffff80002a218d00 (51471) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82dea520) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 unp_connect+0x1c6 sys/kern/uipc_usrreq.c:864 #2 uipc_dgram_send+0xd7 sys/kern/uipc_usrreq.c:599 #3 sosend+0x7aa #4 sendit+0x54c sys/kern/uipc_syscalls.c:786 #5 sys_sendmsg+0x19b sys/kern/uipc_syscalls.c:604 #6 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #6 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 exclusive rwlock sbufsnd r = 0 (0xffff800010fd64a0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 sblock+0x8a sys/kern/uipc_socket2.c:548 #3 sosend+0x259 sys/kern/uipc_socket.c:610 #4 sendit+0x54c sys/kern/uipc_syscalls.c:786 #5 sys_sendmsg+0x19b sys/kern/uipc_syscalls.c:604 #6 syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] #6 syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 54609 (syslogd) thread 0xffff8000ffffd490 (413087) exclusive rrwlock inode r = 0 (0xfffffd806e7441b0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1157 #1 rw_enter+0x32d sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x91 sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0xf1 sys/kern/vfs_syscalls.c:2931 #6 syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline] #6 syscall+0x854 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10217 6746K 7070K 166960K 12699 0 pcb 17 12K 12K 166960K 132 0 rtable 193 8K 9K 166960K 674 0 pf 34 9K 10K 166960K 94 0 ifaddr 40 14K 15K 166960K 108 0 ifgroup 59 2K 2K 166960K 144 0 sysctl 3 0K 1K 166960K 4 0 counters 68 36K 37K 166960K 116 0 ioctlops 0 0K 4K 166960K 1527 0 iov 0 0K 24K 166960K 54 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1379 87K 87K 166960K 2078 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 78 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 89K 166960K 891 0 sigio 0 0K 0K 166960K 11 0 proc 59 79K 115K 166960K 765 0 subproc 104 6K 7K 166960K 210 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 94 0 in_multi 77 5K 7K 166960K 242 0 ether_multi 1 0K 0K 166960K 11 0 mrt 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 594 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 317 90K 102K 166960K 10036 0 UVM aobj 34 4K 4K 166960K 34 0 pinsyscall 37 74K 100K 166960K 2279 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 46 0 NDP 17 0K 2K 166960K 74 0 temp 73 6807K 7302K 166960K 44829 0 kqueue 12 18K 27K 166960K 136 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 120 119 0 115 1 0 1 1 0 8 0 rtentry 112 219 0 134 4 0 4 4 0 8 0 unpcb 144 706 0 682 4 2 2 2 0 8 1 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 27 0 27 1 1 0 1 0 8 0 tcpcb 808 306 0 296 10 2 8 8 0 8 6 arp 120 37 0 23 1 0 1 1 0 8 0 inpcb 384 934 0 921 12 3 9 9 0 8 7 nd6 136 57 0 38 1 0 1 1 0 8 0 pkpcb 40 9 0 9 5 4 1 1 0 8 1 kcovpl 48 16 0 8 1 0 1 1 0 8 0 ppxss 1168 7 0 7 4 3 1 1 0 8 1 pffrag 232 7 0 3 1 0 1 1 0 482 0 pffrnode 88 6 0 3 1 0 1 1 0 8 0 pffrent 40 9 0 5 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 90 0 54 1 0 1 1 0 8 0 pfstkey 128 90 0 54 2 0 2 2 0 8 0 pfstate 376 90 0 54 5 0 5 5 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 256 910 0 535 33 6 27 30 0 8 3 art_table 32 911 0 535 4 0 4 4 0 8 0 art_node 16 217 0 141 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 76 0 66 1 0 1 1 0 8 0 shmpl 112 31 0 0 1 0 1 1 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 2803 0 1288 96 0 96 96 0 8 0 ffsino 272 2803 0 1288 102 0 102 102 0 8 0 nchpl 144 4129 0 2385 67 0 67 67 0 8 1 uvmvnodes 80 3417 0 0 70 0 70 70 0 8 0 vnodes 216 3417 0 0 190 0 190 190 0 8 0 namei 1024 14780 0 14779 4 3 1 2 0 8 0 percpumem 16 72 0 24 1 0 1 1 0 8 0 vcpupl 3904 6 0 0 1 0 1 1 0 8 0 vmpool 696 10 0 4 1 0 1 1 0 8 0 kstatmem 264 74 0 48 3 0 3 3 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 20658 0 20657 10 9 1 8 1 8 0 plimitpl 152 162 0 143 1 0 1 1 0 8 0 sigapl 424 1213 0 1146 8 0 8 8 0 8 0 futexpl 64 12921 0 12915 1 0 1 1 0 8 0 knotepl 120 409 0 0 12 0 12 12 0 8 0 kqueuepl 216 267 0 257 1 0 1 1 0 8 0 pipepl 320 251 0 222 3 0 3 3 0 8 0 fdescpl 496 1173 0 1145 6 2 4 5 0 8 0 filepl 152 7075 0 6801 15 1 14 14 0 8 1 lockfpl 104 285 0 280 1 0 1 1 0 8 0 lockfspl 48 137 0 133 1 0 1 1 0 8 0 sessionpl 144 31 0 15 1 0 1 1 0 8 0 pgrppl 48 38 0 22 1 0 1 1 0 8 0 ucredpl 104 957 0 945 1 0 1 1 0 8 0 zombiepl 144 1146 0 1146 2 1 1 1 0 8 1 processpl 1144 1213 0 1146 6 0 6 6 0 8 0 procpl 656 2065 0 1967 10 1 9 9 0 8 0 srpgc 96 9 0 9 3 2 1 1 0 8 1 sosppl 168 3 0 3 2 1 1 1 0 8 1 sockpl 664 1775 0 1734 14 4 10 10 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 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 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 402 0 0 51 0 51 51 0 8 0 mtagpl 96 27 0 0 1 0 1 1 0 8 0 mbufpl 256 423 0 0 27 0 27 27 0 8 0 bufpl 280 7586 0 1331 448 0 448 448 0 8 0 anonpl 24 271498 0 265066 98 31 67 67 0 186 21 amapchunkpl 152 32488 0 31723 59 18 41 41 0 158 11 amappl16 200 6254 0 6114 16 6 10 16 0 8 0 amappl15 192 19 0 18 1 0 1 1 0 8 0 amappl14 184 205 0 193 2 1 1 2 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 1999 0 1966 3 1 2 3 0 8 0 amappl11 160 73 0 53 1 0 1 1 0 8 0 amappl10 152 74 0 70 1 0 1 1 0 8 0 amappl9 144 311 0 311 2 2 0 1 0 8 0 amappl8 136 150 0 119 2 0 2 2 0 8 0 amappl7 128 60 0 46 1 0 1 1 0 8 0 amappl6 120 403 0 390 2 1 1 2 0 8 0 amappl5 112 209 0 197 1 0 1 1 0 8 0 amappl4 104 601 0 567 2 0 2 2 0 8 0 amappl3 96 6179 0 6082 3 0 3 3 0 8 0 amappl2 88 1604 0 1532 4 2 2 4 0 8 0 amappl1 80 12513 0 12020 22 11 11 22 0 8 0 amappl 88 9359 0 9138 6 0 6 6 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 33 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1183 0 1149 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1183 0 1149 1 0 1 1 0 8 0 vmmpekpl 168 12824 0 12743 4 0 4 4 0 8 0 vmmpepl 168 91731 0 89785 145 46 99 115 0 357 9 vmsppl 440 1182 0 1149 5 0 5 5 0 8 0 rwobjpl 56 31562 0 26983 67 2 65 65 0 8 0 pdppl 4096 2373 0 2304 131 56 75 79 0 8 6 pvpl 32 49431 0 0 400 1 399 399 0 265 0 pmappl 248 1182 0 1149 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 471 0 74 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82c95ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc intr_handler(ffff80002a27c3b0,ffff800000069c00) at intr_handler+0xa4 sys/arch/amd64/amd64/intr.c:549 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff82dea318) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82dea318) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002a27c510,ffff80000067b200) at intr_handler+0xa4 sys/arch/amd64/amd64/intr.c:549 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff82dea318) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82dea318) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002a27c670,ffff80000006bc00) at intr_handler+0xa4 sys/arch/amd64/amd64/intr.c:549 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x70bff8525840, count: -12 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 witness_checkorder(fffffd806dad6f78,9,0) at witness_checkorder+0xc05 rw_enter(fffffd806dad6f68,1) at rw_enter+0xd1 rrw_enter(fffffd806dad6f68,1) at rrw_enter+0x91 sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd80618fe548,2001) at VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 vn_lock(fffffd80618fe548,2001) at vn_lock+0x85 sys/kern/vfs_vnops.c:564 vfs_lookup(ffff80002a2a01f8) at vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 namei(ffff80002a2a01f8) at namei+0x56a sys/kern/vfs_lookup.c:250 unp_connect(ffff800010fd62f8,fffffd806cb43300,ffff80002a218d00) at unp_connect+0x1ce sys/kern/uipc_usrreq.c:864 uipc_dgram_send(ffff800010fd62f8,fffffd806ec2a200,fffffd806cb43300,0) at uipc_dgram_send+0xd7 sys/kern/uipc_usrreq.c:599 sosend(ffff800010fd62f8,fffffd806cb43300,ffff80002a2a0488,0,0,0) at sosend+0x7aa sendit(ffff80002a218d00,5,ffff80002a2a0600,0,ffff80002a2a06c0) at sendit+0x54c sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a218d00,ffff80002a2a0770,ffff80002a2a06c0) at sys_sendmsg+0x19b sys/kern/uipc_syscalls.c:604 syscall(ffff80002a2a0770) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002a2a0770) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xca3e052f710, count: -15