witness: lock order reversal: 1st 0xffff800000e0ec28 sbufsnd (&so->so_snd.sb_lock) 2nd 0xfffffd8068143700 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(fffffd8068143700,9,0) at witness_checkorder+0xc05 rw_enter(fffffd80681436f0,1) at rw_enter+0xd1 rrw_enter(fffffd80681436f0,1) at rrw_enter+0x91 sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd80780a17e8,2001) at VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 vn_lock(fffffd80780a17e8,2001) at vn_lock+0x85 sys/kern/vfs_vnops.c:564 vget(fffffd80780a17e8,2001) at vget+0x1fd sys/kern/vfs_subr.c:676 ktrwriteraw(ffff80002a2794c0,fffffd80780a17e8,fffffd807f7d3478,ffff80002c8ddbb0,ffff80002c8ddb90) at ktrwriteraw+0x13c sys/kern/kern_ktrace.c:679 ktrnamei(ffff80002a2794c0,ffff80002a184c00) at ktrnamei+0x116 ktrwrite sys/kern/kern_ktrace.c:623 [inline] ktrnamei(ffff80002a2794c0,ffff80002a184c00) at ktrnamei+0x116 sys/kern/kern_ktrace.c:217 namei(ffff80002c8ddce8) at namei+0x1e5 sys/kern/vfs_lookup.c:170 unp_connect(ffff800000e0ea80,fffffd806d194100,ffff80002a2794c0) at unp_connect+0x1ce sys/kern/uipc_usrreq.c:864 uipc_dgram_send(ffff800000e0ea80,fffffd806d19c900,fffffd806d194100,0) at uipc_dgram_send+0xd7 sys/kern/uipc_usrreq.c:599 sosend(ffff800000e0ea80,fffffd806d194100,ffff80002c8ddf78,0,0,0) at sosend+0x7aa sendit(ffff80002a2794c0,3,ffff80002c8de0f0,0,ffff80002c8de1b0) at sendit+0x54c sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a2794c0,ffff80002c8de260,ffff80002c8de1b0) at sys_sendmsg+0x19b sys/kern/uipc_syscalls.c:604 syscall(ffff80002c8de260) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002c8de260) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6787e84a800, count: -17 ddb{1}> show registers rdi 0 rsi 0x40000 acpi_pdirpa+0x2be71 rbp 0xffff80002c8dd7e0 rbx 0xffffffff828e9404 pp_r600_decoded_lanes+0x2e88d rdx 0xffff800000e5c380 rcx 0xffff80002a2794c0 rax 0x3ffff acpi_pdirpa+0x2be70 r8 0xffff80002c8dd6c0 r9 0x8080808080808080 r10 0x64e1aa0b003d1232 r11 0x1d8353dbd3068544 r12 0xfffffd8003b24f20 r13 0xfffffd800333ddc0 r14 0x3 r15 0xffffffff rip 0xffffffff81cae62c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002c8dd7d0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.2) tid=304874 pid=15746 tcnt=2 stat=onproc flags process=8000000 proc=4000001 runpri=84, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a278d10,0xffff80002a221740 process=0xffff8000fffeb5c8 user=0xffff80002c8d9000, vmspace=0xfffffd806aceac20 estcpu=34, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 52596 255116 71910 0 2 0x8000000 syz-executor.6 85110 492045 33639 0 2 0x8000000 syz-executor.0 85110 277104 33639 0 3 0xc000080 fsleep syz-executor.0 15746 502833 65275 0 2 0x8000000 syz-executor.2 *15746 304874 65275 0 7 0xc000001 syz-executor.2 86348 434279 34688 0 2 0x8000000 syz-executor.1 86348 185395 34688 0 3 0xc000080 fsleep syz-executor.1 86348 241263 34688 0 3 0xc000080 fsleep syz-executor.1 15001 129648 52214 0 2 0x8000000 syz-executor.5 15001 343111 52214 0 3 0xc000080 msgwait syz-executor.5 15001 339911 52214 0 3 0xc000080 fsleep syz-executor.5 15001 228371 52214 0 3 0xc000080 fsleep syz-executor.5 81427 389189 85819 0 7 0x8000000 syz-executor.3 81427 490526 85819 0 3 0xc000080 rest syz-executor.3 52214 381602 44258 0 3 0x8000082 nanoslp syz-executor.5 34688 90600 44258 0 3 0x8000082 nanoslp syz-executor.1 65275 516169 44258 0 3 0x8000082 nanoslp syz-executor.2 33639 402523 44258 0 3 0x8000082 nanoslp syz-executor.0 49750 38749 0 0 3 0x14280 nfsidl nfsio 51299 168741 0 0 3 0x14280 nfsidl nfsio 93337 496988 0 0 3 0x14280 nfsidl nfsio 24072 506091 0 0 3 0x14280 nfsidl nfsio 89279 511399 0 0 3 0x14280 nfsidl nfsio 12694 206202 0 0 3 0x14280 nfsidl nfsio 96933 269793 0 0 3 0x14280 nfsidl nfsio 74574 367026 0 0 3 0x14280 nfsidl nfsio 10769 416033 0 0 3 0x14280 nfsidl nfsio 41402 437066 0 0 3 0x14280 nfsidl nfsio 12265 321982 0 0 3 0x14280 nfsidl nfsio 78318 68373 0 0 3 0x14280 nfsidl nfsio 31491 84029 0 0 3 0x14280 nfsidl nfsio 33020 390465 0 0 3 0x14280 nfsidl nfsio 53698 120955 0 0 3 0x14280 nfsidl nfsio 57846 301643 0 0 3 0x14280 nfsidl nfsio 51386 22365 0 0 3 0x14280 nfsidl nfsio 94776 356626 0 0 3 0x14280 nfsidl nfsio 1063 360257 0 0 3 0x14280 nfsidl nfsio 73924 164934 0 0 3 0x14280 nfsidl nfsio 63026 144472 0 0 3 0x14200 acct acct 39207 27342 0 0 3 0x14200 bored sosplice 49746 29269 44258 0 2 0x8000002 syz-executor.4 71910 377953 44258 0 3 0x8000082 nanoslp syz-executor.6 85819 54874 44258 0 3 0x8000082 nanoslp syz-executor.3 12667 149224 44258 0 3 0x8000082 nanoslp syz-executor.7 44258 496645 40776 0 3 0x1a000082 wait syz-fuzzer 44258 409960 40776 0 3 0x1e000082 nanoslp syz-fuzzer 44258 187489 40776 0 3 0x1e000082 wait syz-fuzzer 44258 163306 40776 0 3 0x1e000082 thrsleep syz-fuzzer 44258 116543 40776 0 3 0x1e000082 thrsleep syz-fuzzer 44258 462674 40776 0 3 0x1e000082 wait syz-fuzzer 44258 370781 40776 0 3 0x1e000082 wait syz-fuzzer 44258 472342 40776 0 3 0x1e000082 thrsleep syz-fuzzer 44258 120949 40776 0 3 0x1e000082 thrsleep syz-fuzzer 44258 403916 40776 0 3 0x1e000082 wait syz-fuzzer 44258 395980 40776 0 3 0x1e000082 wait syz-fuzzer 44258 205752 40776 0 3 0x1e000082 thrsleep syz-fuzzer 44258 345335 40776 0 3 0x1e000082 wait syz-fuzzer 44258 216740 40776 0 3 0x1e000082 thrsleep syz-fuzzer 44258 21817 40776 0 3 0x1e000082 wait syz-fuzzer 44258 106357 40776 0 3 0x1e000082 kqread syz-fuzzer 40776 371517 96982 0 3 0x810008a sigsusp ksh 96982 376508 75358 0 3 0x1800009a kqread sshd 88638 199393 1 0 3 0x18100083 ttyopn getty 75358 350431 1 0 3 0x18000088 kqread sshd 93270 67861 4083 73 3 0x19100010 biowait syslogd 4083 520157 1 0 3 0x18100082 sbwait syslogd 59247 378354 1 0 3 0x18100080 kqread resolvd 50635 465551 81080 77 3 0x18100092 kqread dhcpleased 86359 353188 81080 77 3 0x18100092 kqread dhcpleased 81080 406932 1 0 3 0x18000080 kqread dhcpleased 62356 449114 0 0 3 0x14200 bored smr 91423 280837 0 0 2 0x14200 zerothread 96232 492679 0 0 3 0x14200 aiodoned aiodoned 65182 308735 0 0 3 0x14200 syncer update 63641 415038 0 0 3 0x14200 cleaner cleaner 17641 162348 0 0 3 0x14200 reaper reaper 18524 29421 0 0 3 0x14200 pgdaemon pagedaemon 47127 482915 0 0 3 0x14200 bored viomb 98704 147238 0 0 3 0x40014200 acpi0 acpi0 3964 400818 0 0 3 0x40014200 idle1 35378 439725 0 0 3 0x14200 bored softnet3 70049 486558 0 0 3 0x14200 bored softnet2 931 12277 0 0 3 0x14200 bored softnet1 18840 129944 0 0 3 0x14200 bored softnet0 90365 384046 0 0 3 0x14200 bored systqmp 29985 372021 0 0 3 0x14200 bored systq 21355 81281 0 0 3 0x14200 tmoslp softclockmp 59490 287720 0 0 3 0x40014200 tmoslp softclock 69399 331213 0 0 3 0x40014200 idle0 1 135201 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 15746 (syz-executor.2) thread 0xffff80002a2794c0 (304874) 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 (0xffff800000e0ec28) #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 93270 (syslogd) thread 0xffff8000ffffdc40 (67861) exclusive rrwlock inode r = 0 (0xfffffd806e74d4e0) #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 10207 6688K 7324K 166960K 12372 0 pcb 17 12K 12K 166960K 125 0 rtable 193 8K 9K 166960K 551 0 pf 31 9K 10K 166960K 70 0 ifaddr 40 14K 15K 166960K 77 0 ifgroup 54 2K 2K 166960K 96 0 sysctl 2 0K 1K 166960K 3 0 counters 66 36K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1506 0 iov 0 0K 12K 166960K 32 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1377 87K 87K 166960K 1917 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 60 0 dirhash 12 2K 3K 166960K 42 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 85K 166960K 684 0 sigio 0 0K 0K 166960K 28 0 proc 58 79K 115K 166960K 625 0 subproc 104 6K 6K 166960K 156 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 90 0 in_multi 81 6K 7K 166960K 157 0 ether_multi 1 0K 0K 166960K 2 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 510 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 299 78K 105K 166960K 8417 0 UVM aobj 27 4K 4K 166960K 29 0 pinsyscall 37 74K 100K 166960K 1964 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 58 0 NDP 12 0K 1K 166960K 50 0 temp 71 6806K 6872K 166960K 37237 0 kqueue 12 18K 26K 166960K 106 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 97 0 94 1 0 1 1 0 8 0 rtentry 112 173 0 88 4 0 4 4 0 8 0 unpcb 144 550 0 527 1 0 1 1 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 96 0 96 1 1 0 1 0 8 0 tcpcb 808 171 0 165 3 2 1 2 0 8 0 arp 120 30 0 14 1 0 1 1 0 8 0 inpcb 384 680 0 669 5 3 2 3 0 8 0 nd6 136 41 0 19 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1168 7 0 7 2 2 0 1 0 8 0 pffrag 232 4 0 4 3 2 1 1 0 482 1 pffrnode 88 4 0 4 3 2 1 1 0 8 1 pffrent 40 92 0 92 3 2 1 1 0 8 1 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 69 0 36 1 0 1 1 0 8 0 pfstkey 128 69 0 36 2 0 2 2 0 8 0 pfstate 376 69 0 36 5 1 4 4 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 256 694 0 319 33 9 24 29 0 8 0 art_table 32 695 0 319 4 0 4 4 0 8 0 art_node 16 169 0 93 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 57 0 47 1 0 1 1 0 8 0 shmpl 112 26 0 2 1 0 1 1 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 2499 0 976 96 0 96 96 0 8 0 ffsino 272 2499 0 976 102 0 102 102 0 8 0 nchpl 144 3584 0 1837 67 0 67 67 0 8 0 uvmvnodes 80 3006 0 0 62 0 62 62 0 8 0 vnodes 216 3006 0 0 167 0 167 167 0 8 0 namei 1024 12458 0 12457 3 2 1 2 0 8 0 percpumem 16 61 0 14 1 0 1 1 0 8 0 vmpool 696 2 0 2 2 1 1 1 0 8 1 kstatmem 264 52 0 28 2 0 2 2 0 8 0 scxspl 216 19998 0 19996 10 9 1 8 1 8 0 plimitpl 152 141 0 126 1 0 1 1 0 8 0 sigapl 424 1014 0 946 8 0 8 8 0 8 0 futexpl 64 10768 0 10763 1 0 1 1 0 8 0 knotepl 120 383 0 0 12 1 11 11 0 8 0 kqueuepl 216 209 0 201 1 0 1 1 0 8 0 pipepl 320 232 0 204 3 0 3 3 0 8 0 fdescpl 496 974 0 946 6 2 4 5 0 8 0 filepl 152 5751 0 5490 11 0 11 11 0 8 0 lockfpl 104 192 0 188 1 0 1 1 0 8 0 lockfspl 48 87 0 83 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 38 0 22 1 0 1 1 0 8 0 ucredpl 104 679 0 668 1 0 1 1 0 8 0 zombiepl 144 947 0 946 2 1 1 1 0 8 0 processpl 1144 1014 0 946 6 0 6 6 0 8 0 procpl 656 1648 0 1557 9 0 9 9 0 8 0 srpgc 96 6 0 6 2 2 0 1 0 8 0 sosppl 168 2 0 2 2 2 0 1 0 8 0 sockpl 664 1333 0 1297 7 3 4 4 0 8 0 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 10 0 0 2 0 2 2 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 12 0 0 2 0 2 2 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 347 0 0 44 0 44 44 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 535 0 0 29 0 29 29 0 8 0 bufpl 280 7844 0 900 497 0 497 497 0 8 0 anonpl 24 309624 0 303297 89 26 63 73 0 186 9 amapchunkpl 152 29450 0 28719 46 16 30 40 0 158 0 amappl16 200 7384 0 7242 24 6 18 20 0 8 8 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 168 0 158 2 1 1 2 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1700 0 1669 2 0 2 2 0 8 0 amappl11 160 70 0 52 1 0 1 1 0 8 0 amappl10 152 65 0 64 1 0 1 1 0 8 0 amappl9 144 257 0 257 2 2 0 1 0 8 0 amappl8 136 166 0 132 2 0 2 2 0 8 0 amappl7 128 126 0 115 1 0 1 1 0 8 0 amappl6 120 375 0 361 2 1 1 2 0 8 0 amappl5 112 189 0 177 1 0 1 1 0 8 0 amappl4 104 591 0 557 2 0 2 2 0 8 0 amappl3 96 5525 0 5434 3 0 3 3 0 8 0 amappl2 88 1423 0 1351 4 2 2 4 0 8 0 amappl1 80 11777 0 11280 22 11 11 22 0 8 0 amappl 88 7804 0 7593 6 0 6 6 0 92 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 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 28 0 2 1 0 1 1 0 8 0 uaddrrnd 24 976 0 948 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 976 0 948 1 0 1 1 0 8 0 vmmpekpl 168 11352 0 11283 4 0 4 4 0 8 0 vmmpepl 168 81948 0 80027 144 40 104 118 0 357 12 vmsppl 440 975 0 948 4 0 4 4 0 8 0 rwobjpl 56 30384 0 26240 67 7 60 60 0 8 1 pdppl 4096 1959 0 1896 120 55 65 77 0 8 2 pvpl 32 49341 0 0 400 2 398 399 0 265 0 pmappl 248 975 0 948 4 2 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 449 0 74 11 0 11 11 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 __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(ffff8000373966b0,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(ffff800037396810,ffff80000067b300) at intr_handler+0xa4 sys/arch/amd64/amd64/intr.c:549 Xintr_ioapic_edge26_untramp() at Xintr_ioapic_edge26_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xf sys/dev/kcov.c:154 intr_handler(ffff800037396980,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: 0x7894cb4f3410, 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(fffffd8068143700,9,0) at witness_checkorder+0xc05 rw_enter(fffffd80681436f0,1) at rw_enter+0xd1 rrw_enter(fffffd80681436f0,1) at rrw_enter+0x91 sys/kern/kern_rwlock.c:464 VOP_LOCK(fffffd80780a17e8,2001) at VOP_LOCK+0x8b sys/kern/vfs_vops.c:524 vn_lock(fffffd80780a17e8,2001) at vn_lock+0x85 sys/kern/vfs_vnops.c:564 vget(fffffd80780a17e8,2001) at vget+0x1fd sys/kern/vfs_subr.c:676 ktrwriteraw(ffff80002a2794c0,fffffd80780a17e8,fffffd807f7d3478,ffff80002c8ddbb0,ffff80002c8ddb90) at ktrwriteraw+0x13c sys/kern/kern_ktrace.c:679 ktrnamei(ffff80002a2794c0,ffff80002a184c00) at ktrnamei+0x116 ktrwrite sys/kern/kern_ktrace.c:623 [inline] ktrnamei(ffff80002a2794c0,ffff80002a184c00) at ktrnamei+0x116 sys/kern/kern_ktrace.c:217 namei(ffff80002c8ddce8) at namei+0x1e5 sys/kern/vfs_lookup.c:170 unp_connect(ffff800000e0ea80,fffffd806d194100,ffff80002a2794c0) at unp_connect+0x1ce sys/kern/uipc_usrreq.c:864 uipc_dgram_send(ffff800000e0ea80,fffffd806d19c900,fffffd806d194100,0) at uipc_dgram_send+0xd7 sys/kern/uipc_usrreq.c:599 sosend(ffff800000e0ea80,fffffd806d194100,ffff80002c8ddf78,0,0,0) at sosend+0x7aa sendit(ffff80002a2794c0,3,ffff80002c8de0f0,0,ffff80002c8de1b0) at sendit+0x54c sys/kern/uipc_syscalls.c:786 sys_sendmsg(ffff80002a2794c0,ffff80002c8de260,ffff80002c8de1b0) at sys_sendmsg+0x19b sys/kern/uipc_syscalls.c:604 syscall(ffff80002c8de260) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline] syscall(ffff80002c8de260) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6787e84a800, count: -17