witness: lock order reversal: 1st 0xfffffd806bcd4668 fdlock (&newfdp->fd_fd.fd_lock) 2nd 0xfffffd806dd4ddd8 inode (&ip->i_lock) lock order [1] fdlock (&newfdp->fd_fd.fd_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff83429102 -> 0xffffffff833a5512 is missing lock order [2] inode (&ip->i_lock) -> [3] 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 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] fdlock (&newfdp->fd_fd.fd_lock) #0 rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 #1 unp_externalize+0x3e4 sys/kern/uipc_usrreq.c:1070 #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 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:438 witness_checkorder(fffffd806dd4ddd8,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd4ddc0,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd4ddc0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806dd4eb40,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806dd4eb40,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd806bb316a0,ffff8000ffff74a0) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bb316a0,ffff8000ffff74a0) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd806bb316a0,ffff8000ffff74a0) at fdrop+0x126 sys/kern/kern_descrip.c:1265 knote_drop(fffffd8071473e18,ffff8000ffff74a0) at knote_drop+0x1a1 sys/kern/kern_event.c:2142 knote_remove(ffff8000ffff74a0,fffffd806eab5288,fffffd806eab5310,5,0) at knote_remove+0x239 sys/kern/kern_event.c:2025 knote_fdclose(ffff8000ffff74a0,5) at knote_fdclose+0xf9 sys/kern/kern_event.c:2049 fdrelease(ffff8000ffff74a0,5) at fdrelease+0xf9 sys/kern/kern_descrip.c:749 syscall(ffff800037cc46f0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037cc46f0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d2520ee350, count: -14 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff800037cc4190 rbx 0xfffffd800470da38 rdx 0 rcx 0xffff8000ffff74a0 rax 0xffffffff8383aff0 cpu_info_full_primary+0x1ff0 r8 0xffff800037cc4070 r9 0x8080808080808080 r10 0x670e8b06b0c06553 r11 0x997e6e4cde852b2c r12 0 r13 0xfffffd8003f24f00 r14 0x3 r15 0xffffffff rip 0xffffffff810240e5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800037cc4180 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=39450 pid=26833 tcnt=3 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=0xffff8000ffff6cf0,0xffff8000ffff67e0 process=0xffff800037cdae10 user=0xffff800037cbf000, vmspace=0xfffffd806bc9dc98 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26833 307607 38392 0 7 0 syz-executor *26833 39450 38392 0 7 0x4000000 syz-executor 26833 62438 38392 0 2 0x4000080 syz-executor 13662 158928 83877 0 2 0 syz-executor 13662 148316 83877 0 3 0x4000080 fifor syz-executor 21785 378230 20239 0 3 0x80 nanoslp syz-executor 21785 218767 20239 0 3 0x4000080 rest syz-executor 21785 42848 20239 0 3 0x4000080 fsleep syz-executor 62722 78992 0 0 3 0x14200 bored sosplice 13452 406009 45625 0 3 0x100082 sbwait ndp 45625 228137 57863 0 3 0x10008a sigsusp sh 81071 16260 39623 0 3 0x82 nanoslp syz-executor 83877 505044 39623 0 3 0x82 nanoslp syz-executor 59668 438594 39623 0 3 0x2 biowait syz-executor 57863 195519 39623 0 3 0x82 wait syz-executor 38392 12482 39623 0 3 0x82 nanoslp syz-executor 72416 23296 39623 0 3 0x82 nanoslp syz-executor 20239 289336 39623 0 3 0x82 nanoslp syz-executor 75105 10225 39623 0 3 0x2 biowait syz-executor 39623 153326 14359 0 3 0x82 kqread syz-executor 14359 407537 51922 0 3 0x10008a sigsusp ksh 51922 108391 53964 0 3 0x98 kqread sshd-session 53964 342100 39945 0 3 0x92 kqread sshd-session 85774 433084 1 0 3 0x100083 ttyin getty 39945 456041 1 0 3 0x88 kqread sshd 13901 371936 54999 74 3 0x1100092 bpf pflogd 54999 357478 1 0 3 0x80 sbwait pflogd 48132 450875 16723 73 3 0x1100090 kqread syslogd 16723 88983 1 0 3 0x100082 sbwait syslogd 92358 176120 1 0 3 0x100080 kqread resolvd 27234 122314 94529 77 3 0x100092 kqread dhcpleased 71122 270832 94529 77 3 0x100092 kqread dhcpleased 94529 169667 1 0 3 0x80 kqread dhcpleased 7078 393484 0 0 3 0x14200 bored smr 29513 157612 0 0 3 0x14200 pgzero zerothread 9171 90778 0 0 3 0x14200 aiodoned aiodoned 72119 393778 0 0 3 0x14200 syncer update 12756 497364 0 0 3 0x14200 cleaner cleaner 19858 268493 0 0 3 0x14200 reaper reaper 94963 321623 0 0 3 0x14200 pgdaemon pagedaemon 22455 419366 0 0 3 0x14200 bored viomb 11860 455295 0 0 3 0x40014200 acpi0 acpi0 63889 297272 0 0 3 0x40014200 idle1 18694 224226 0 0 3 0x14200 bored softnet3 11073 24663 0 0 3 0x14200 bored softnet2 35534 122183 0 0 3 0x14200 bored softnet1 90700 254332 0 0 3 0x14200 bored softnet0 87765 408556 0 0 3 0x14200 bored systqmp 85917 349424 0 0 3 0x14200 bored systq 43464 410669 0 0 3 0x14200 tmoslp softclockmp 80285 206513 0 0 3 0x40014200 tmoslp softclock 49937 239058 0 0 3 0x40014200 idle0 1 371164 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 26833 (syz-executor) thread 0xffff8000ffff74a0 (39450) 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 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x126 sys/kern/kern_descrip.c:1265 #3 knote_drop+0x1a1 sys/kern/kern_event.c:2142 #4 knote_remove+0x239 sys/kern/kern_event.c:2025 #5 knote_fdclose+0xf9 sys/kern/kern_event.c:2049 #6 fdrelease+0xf9 sys/kern/kern_descrip.c:749 #7 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #8 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xfffffd806bcd4668) #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 sys_close+0xc4 sys/kern/kern_descrip.c:767 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 59668 (syz-executor) thread 0xffff80002a2f8298 (438594) exclusive rrwlock inode r = 0 (0xfffffd8064376ed8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #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_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cced650) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #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:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 75105 (syz-executor) thread 0xffff80002a390ce8 (10225) exclusive rrwlock inode r = 0 (0xfffffd806e5f02e8) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #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_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80715b10d0) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #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:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10197 11087K 11290K 166960K 11491 0 pcb 17 12K 12K 166960K 44 0 rtable 200 7K 8K 166960K 384 0 pf 33 17K 18K 166960K 60 0 ifaddr 38 6K 7K 166960K 53 0 ifgroup 51 2K 2K 166960K 70 0 sysctl 1 1K 1K 166960K 1 0 counters 62 36K 37K 166960K 84 0 ioctlops 0 0K 4K 166960K 1507 0 iov 0 0K 20K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 84K 166960K 1527 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 40 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 324 0 sigio 0 0K 0K 166960K 1 0 proc 72 91K 128K 166960K 551 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 24 0 in_multi 85 6K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 3 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 402 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 226 73K 87K 166960K 4581 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 43 86K 108K 166960K 1447 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 11 0K 2K 166960K 34 0 temp 44 8639K 8711K 166960K 15244 0 kqueue 14 22K 28K 166960K 60 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 120 115 0 111 3 0 3 3 0 8 2 rtentry 112 113 0 24 4 0 4 4 0 8 0 unpcb 144 144 0 123 2 0 2 2 0 8 1 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 4 0 4 1 0 1 1 0 8 1 tcpcb 808 44 0 37 2 0 2 2 0 8 1 arp 120 18 0 2 1 0 1 1 0 8 0 inpcb 376 193 0 183 3 0 3 3 0 8 1 nd6 136 24 0 3 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 9 0 9 1 0 1 1 0 8 1 pfstscr 40 1 0 1 1 0 1 1 0 8 1 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 3 0 2 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 31 0 0 1 0 1 1 0 8 0 pfstkey 128 32 0 1 1 0 1 1 0 8 0 pfstate 376 32 0 1 4 0 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 256 485 0 85 29 0 29 29 0 8 3 art_table 32 486 0 85 4 0 4 4 0 8 0 art_node 16 111 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 0 1 1 0 8 1 semapl 112 38 0 34 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1952 0 448 95 0 95 95 0 8 0 ffsino 280 1952 0 448 109 0 109 109 0 8 0 nchpl 144 2401 0 714 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 2111 0 0 44 0 44 44 0 8 0 vnodes 216 2111 0 0 118 0 118 118 0 8 0 namei 1024 7982 0 7980 1 0 1 1 0 8 0 percpumem 16 56 0 11 1 0 1 1 0 8 0 kstatmem 264 36 0 14 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 7743 0 7741 9 2 7 7 1 8 6 plimitpl 152 77 0 60 1 0 1 1 0 8 0 sigapl 424 635 0 585 7 0 7 7 0 8 0 futexpl 64 3010 0 3009 1 0 1 1 0 8 0 knotepl 120 320 0 0 10 0 10 10 0 8 0 kqueuepl 216 73 0 63 1 0 1 1 0 8 0 pipepl 328 194 0 167 8 0 8 8 0 8 5 fdescpl 504 616 0 585 5 0 5 5 0 8 0 filepl 152 3006 0 2774 17 0 17 17 0 8 7 lockfpl 104 68 0 63 1 0 1 1 0 8 0 lockfspl 48 31 0 28 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 429 0 416 1 0 1 1 0 8 0 zombiepl 144 587 0 585 1 0 1 1 0 8 0 processpl 1176 635 0 585 5 0 5 5 0 8 0 procpl 656 969 0 914 6 0 6 6 0 8 0 srpgc 96 4 0 4 1 0 1 1 0 8 1 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 688 455 0 420 10 0 10 10 0 8 6 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 115 0 0 15 0 15 15 0 8 0 mcl2k 2048 36 0 0 5 0 5 5 0 8 0 mtagpl 96 8 0 0 1 0 1 1 0 8 0 mbufpl 256 262 0 0 17 0 17 17 0 8 0 bufpl 280 2771 0 196 184 0 184 184 0 8 0 anonpl 24 126346 0 120185 46 0 46 46 0 184 4 amapchunkpl 152 14652 0 14081 28 0 28 28 0 158 3 amappl16 200 2591 0 2511 14 3 11 14 0 8 4 amappl15 192 49 0 48 1 0 1 1 0 8 0 amappl14 184 122 0 108 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1274 0 1242 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 5 2 2 0 1 0 8 0 amappl9 144 242 0 242 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 117 0 104 1 0 1 1 0 8 0 amappl6 120 188 0 184 1 0 1 1 0 8 0 amappl5 112 121 0 111 1 0 1 1 0 8 0 amappl4 104 336 0 316 1 0 1 1 0 8 0 amappl3 96 2543 0 2438 4 0 4 4 0 8 0 amappl2 88 683 0 619 2 0 2 2 0 8 0 amappl1 80 9220 0 8623 15 0 15 15 0 8 1 amappl 88 4183 0 4017 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 617 0 586 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 617 0 586 1 0 1 1 0 8 0 vmmpekpl 168 7141 0 7104 3 0 3 3 0 8 0 vmmpepl 168 45452 0 43552 96 0 96 96 0 357 5 vmsppl 456 616 0 586 5 0 5 5 0 8 0 rwobjpl 64 18026 0 14890 51 0 51 51 0 8 0 pdppl 4096 1241 0 1172 101 28 73 83 0 8 4 pvpl 32 15475 0 0 125 0 125 125 0 265 0 pmappl 248 616 0 586 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 281 0 30 8 0 8 8 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:438 witness_checkorder(fffffd806dd4ddd8,9,0) at witness_checkorder+0x1047 rw_do_enter_write(fffffd806dd4ddc0,1) at rw_do_enter_write+0xb7 sys/kern/kern_rwlock.c:233 rrw_enter(fffffd806dd4ddc0,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 VOP_LOCK(fffffd806dd4eb40,2001) at VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 vn_lock(fffffd806dd4eb40,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:570 vn_closefile(fffffd806bb316a0,ffff8000ffff74a0) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bb316a0,ffff8000ffff74a0) at vn_closefile+0x111 sys/kern/vfs_vnops.c:615 fdrop(fffffd806bb316a0,ffff8000ffff74a0) at fdrop+0x126 sys/kern/kern_descrip.c:1265 knote_drop(fffffd8071473e18,ffff8000ffff74a0) at knote_drop+0x1a1 sys/kern/kern_event.c:2142 knote_remove(ffff8000ffff74a0,fffffd806eab5288,fffffd806eab5310,5,0) at knote_remove+0x239 sys/kern/kern_event.c:2025 knote_fdclose(ffff8000ffff74a0,5) at knote_fdclose+0xf9 sys/kern/kern_event.c:2049 fdrelease(ffff8000ffff74a0,5) at fdrelease+0xf9 sys/kern/kern_descrip.c:749 syscall(ffff800037cc46f0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037cc46f0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x6d2520ee350, count: -14 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029a9bff0) 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 syscall(ffff800037cbeba0) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037cbeba0) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72d401b71970, count: -6