witness: lock order reversal: 1st 0xffff80003abaa490 fdlock (&newfdp->fd_fd.fd_lock) 2nd 0xfffffd806fb18d70 inode (&ip->i_lock) lock order [1] fdlock (&newfdp->fd_fd.fd_lock) -> [2] inode (&ip->i_lock) lock order data 0xffffffff83487e98 -> 0xffffffff8347e106 is missing lock order [2] inode (&ip->i_lock) -> [3] sbufrcv (&so->so_rcv.sb_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 sblock+0xb6 sys/kern/uipc_socket2.c:536 #2 soreceive+0x27d sys/kern/uipc_socket.c:890 #3 fifo_read+0x117 sys/miscfs/fifofs/fifo_vnops.c:264 #4 VOP_READ+0x101 sys/kern/vfs_vops.c:227 #5 vn_rdwr+0x15b sys/kern/vfs_vnops.c:-1 #6 vndsetcred+0xa1 sys/dev/vnd.c:685 #7 vndioctl+0xdfc sys/dev/vnd.c:486 #8 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #9 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #10 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #12 Xsyscall+0x128 lock order [3] sbufrcv (&so->so_rcv.sb_lock) -> [1] fdlock (&newfdp->fd_fd.fd_lock) #0 rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 #1 unp_externalize+0x3cf sys/kern/uipc_usrreq.c:1074 #2 soreceive+0xc24 sys/kern/uipc_socket.c:1029 #3 recvit+0x40b sys/kern/uipc_syscalls.c:1078 #4 sys_recvmsg+0x1bf sys/kern/uipc_syscalls.c:878 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #6 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:438 witness_checkorder(fffffd806fb18d70,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806fb18d58,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806fb18d58,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd806fc181c0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd806fc181c0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:576 vn_closefile(fffffd806c462ea8,ffff80003bfb62c0) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806c462ea8,ffff80003bfb62c0) at vn_closefile+0x111 sys/kern/vfs_vnops.c:621 fdrop(fffffd806c462ea8,ffff80003bfb62c0) at fdrop+0x121 sys/kern/kern_descrip.c:1281 knote_drop(fffffd806c5d7810,ffff80003bfb62c0) at knote_drop+0x1a1 sys/kern/kern_event.c:2296 knote_remove(ffff80003bfb62c0,fffffd806f307460,fffffd806f3074f0,5,0) at knote_remove+0x215 sys/kern/kern_event.c:-1 knote_fdclose(ffff80003bfb62c0,5) at knote_fdclose+0xf9 sys/kern/kern_event.c:2203 fdrelease(ffff80003bfb62c0,5) at fdrelease+0xf9 sys/kern/kern_descrip.c:761 syscall(ffff80003c47fde0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c47fde0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b87fd3e7e0, count: -14 ddb{1}> show registers rdi 0 rsi 0x80000 acpi_pdirpa+0x6be71 rbp 0xffff80003c47f8a0 rbx 0 rdx 0xffff8000015f8000 rcx 0xffff80003bfb62c0 rax 0x7ffff acpi_pdirpa+0x6be70 r8 0xffff80003c47f780 r9 0x8080808080808080 r10 0x3e44057d7700251f r11 0xe8204e28b3bfb87e r12 0xfffffd80040a5d00 r13 0xfffffd8004891938 r14 0x3 r15 0xffffffff83512289 substchar+0xfc85 rip 0xffffffff831a0d75 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c47f890 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=138779 pid=93624 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=0xffff80003bfb6558,0xffff80003bfb94f0 process=0xffff80003c4709c8 user=0xffff80003c47a000, vmspace=0xfffffd806c6a6b88 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 39983 279130 31436 0 2 0 syz-executor 93624 63451 73837 0 7 0 syz-executor *93624 138779 73837 0 7 0x4000000 syz-executor 65949 356420 5687 0 2 0 syz-executor 65949 232372 5687 0 2 0x4000000 syz-executor 64657 207162 17194 0 2 0 syz-executor 64657 491855 17194 0 3 0x4000080 fsleep syz-executor 64657 358966 17194 0 3 0x4000080 fsleep syz-executor 65760 319778 25079 0 2 0 syz-executor 65760 163928 25079 0 3 0x4000080 sbwait syz-executor 65760 96008 25079 0 3 0x4000000 inode syz-executor 65760 3380 25079 0 3 0x4000000 inode syz-executor 36414 194570 50123 0 3 0x80 nanoslp syz-executor 36414 128782 50123 0 3 0x4000080 fsleep syz-executor 36414 287791 50123 0 3 0x4000080 fsleep syz-executor 36414 55198 50123 0 3 0x4000080 nanoslp syz-executor 62531 250455 0 0 3 0x14280 nfsidl nfsio 3418 400466 0 0 3 0x14280 nfsidl nfsio 88041 336457 0 0 3 0x14280 nfsidl nfsio 1153 355326 0 0 3 0x14280 nfsidl nfsio 52393 355293 0 0 3 0x14280 nfsidl nfsio 33968 196100 0 0 3 0x14280 nfsidl nfsio 93726 448177 0 0 3 0x14280 nfsidl nfsio 98419 23624 0 0 3 0x14280 nfsidl nfsio 31909 26525 0 0 3 0x14280 nfsidl nfsio 99739 492502 0 0 3 0x14280 nfsidl nfsio 56492 274785 0 0 3 0x14280 nfsidl nfsio 42797 304203 0 0 3 0x14280 nfsidl nfsio 81178 78813 0 0 3 0x14280 nfsidl nfsio 82750 421401 0 0 3 0x14280 nfsidl nfsio 13678 62278 0 0 3 0x14280 nfsidl nfsio 50639 231907 0 0 3 0x14280 nfsidl nfsio 45502 194715 0 0 3 0x14280 nfsidl nfsio 36189 483230 0 0 3 0x14280 nfsidl nfsio 11058 265108 0 0 3 0x14280 nfsidl nfsio 38623 312546 0 0 3 0x14280 nfsidl nfsio 32317 175188 17497 0 3 0x80 nanoslp syz-executor 32317 223584 17497 0 3 0x4000080 wsevent_read syz-executor 32317 31741 17497 0 3 0x4000080 fsleep syz-executor 17194 460019 15378 0 3 0x82 nanoslp syz-executor 25079 66566 15378 0 3 0x82 nanoslp syz-executor 73837 208255 15378 0 3 0x82 nanoslp syz-executor 31436 476876 15378 0 3 0x82 nanoslp syz-executor 5687 112809 15378 0 3 0x82 nanoslp syz-executor 96342 287267 15378 0 3 0x82 nanoslp syz-executor 50123 90075 15378 0 3 0x82 nanoslp syz-executor 17497 502231 15378 0 3 0x82 nanoslp syz-executor 15378 139351 19389 0 3 0x82 kqread syz-executor 19389 184098 85671 0 3 0x10008a sigsusp ksh 85671 354707 3749 0 3 0x98 kqread sshd-session 3749 437584 19407 0 3 0x92 kqread sshd-session 23082 327115 1 0 3 0x100083 ttyopn getty 19407 8409 1 0 3 0x88 kqread sshd 68840 239680 86152 74 3 0x1100092 bpf pflogd 86152 18169 1 0 3 0x80 sbwait pflogd 29700 29276 78618 73 3 0x1100090 kqread syslogd 78618 92442 1 0 3 0x100082 sbwait syslogd 35616 492179 1 0 3 0x100080 kqread resolvd 39771 245280 73699 77 3 0x100092 kqread dhcpleased 44646 479342 73699 77 3 0x100092 kqread dhcpleased 73699 465947 1 0 3 0x80 kqread dhcpleased 56752 252952 0 0 3 0x14200 bored smr 12206 352605 0 0 2 0x14200 zerothread 28533 310366 0 0 3 0x14200 aiodoned aiodoned 78490 492347 0 0 3 0x14200 syncer update 79177 65271 0 0 3 0x14200 cleaner cleaner 25722 255166 0 0 3 0x14200 reaper reaper 12697 419327 0 0 3 0x14200 pgdaemon pagedaemon 66939 92832 0 0 3 0x14200 bored viomb 76575 249165 0 0 3 0x40014200 acpi0 acpi0 56148 387434 0 0 3 0x40014200 idle1 24753 325554 0 0 3 0x14200 bored softnet1 76989 444691 0 0 2 0x14200 softnet0 76703 61405 0 0 3 0x14200 bored systqmp 97844 164299 0 0 3 0x14200 bored systq 36347 26574 0 0 3 0x14200 tmoslp softclockmp 39859 238446 0 0 3 0x40014200 tmoslp softclock 96843 454537 0 0 3 0x40014200 idle0 1 182557 0 0 4 0x48000082 init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 93624 (syz-executor) thread 0xffff80003bfb62c0 (138779) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a9fc40) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:614 #2 fdrop+0x121 sys/kern/kern_descrip.c:1281 #3 knote_drop+0x1a1 sys/kern/kern_event.c:2296 #4 knote_remove+0x215 sys/kern/kern_event.c:-1 #5 knote_fdclose+0xf9 sys/kern/kern_event.c:2203 #6 fdrelease+0xf9 sys/kern/kern_descrip.c:761 #7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #8 Xsyscall+0x128 exclusive rwlock fdlock r = 0 (0xffff80003abaa490) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 sys_close+0xd0 sys/kern/kern_descrip.c:779 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #4 Xsyscall+0x128 Process 65760 (syz-executor) thread 0xffff8000fffeefa8 (163928) exclusive rrwlock inode r = 0 (0xfffffd806ee716e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x937 sys/kern/vfs_lookup.c:580 #10 namei+0x7c5 sys/kern/vfs_lookup.c:250 #11 vn_open+0x178 sys/kern/vfs_vnops.c:146 #12 vndioctl+0xc43 sys/dev/vnd.c:458 #13 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #14 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537 #15 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #16 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #17 Xsyscall+0x128 Process 65760 (syz-executor) thread 0xffff80003bfb6d20 (96008) exclusive rrwlock inode r = 0 (0xfffffd8065731318) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576 #5 vfs_lookup+0x10f sys/kern/vfs_lookup.c:431 #6 namei+0x7c5 sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1611 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11068 12103K 12272K 166960K 12286 0 pcb 17 12K 12K 166960K 44 0 rtable 243 9K 10K 166960K 412 0 pf 34 17K 24K 166960K 89 0 ifaddr 42 7K 8K 166960K 53 0 ifgroup 52 2K 2K 166960K 76 0 sysctl 1 1K 9K 166960K 6 0 counters 70 37K 37K 166960K 84 0 ioctlops 0 0K 4K 166960K 1512 0 iov 0 0K 16K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1300 82K 82K 166960K 1474 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 40 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 278 0 sigio 0 0K 0K 166960K 2 0 proc 71 115K 164K 166960K 569 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 12 0 in_multi 96 7K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 387 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 243 159K 170K 166960K 4289 0 UVM aobj 7 2K 4K 166960K 8 0 pinsyscall 43 86K 108K 166960K 1415 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 12 0K 1K 166960K 33 0 temp 40 9103K 9167K 166960K 13419 0 kqueue 14 22K 26K 166960K 48 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 42 0 39 1 0 1 1 0 8 0 rtentry 176 117 0 16 6 0 6 6 0 8 0 unpcb 144 259 0 240 6 0 6 6 0 8 5 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 49 0 45 1 0 1 1 0 8 0 arp 136 19 0 0 1 0 1 1 0 8 0 inpcb 328 190 0 182 2 0 2 2 0 8 1 nd6 152 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 4 0 4 1 0 1 1 0 8 1 pppxif 1576 1 0 1 1 0 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 25 0 0 1 0 1 1 0 8 0 pfstkey 128 25 0 0 1 0 1 1 0 8 0 pfstate 448 24 0 0 3 0 3 3 0 8 0 pfrule 1360 28 0 22 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 490 0 78 31 0 31 31 0 8 3 art_table 40 493 0 78 5 0 5 5 0 8 0 art_node 32 115 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semapl 64 38 0 33 1 0 1 1 0 8 0 shmpl 112 5 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1839 0 374 93 0 93 93 0 8 0 ffsino 296 1839 0 374 114 0 114 114 0 8 0 nchpl 144 2220 0 518 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 vnodes 216 1988 0 0 111 0 111 111 0 8 0 namei 1024 7407 0 7405 1 0 1 1 0 8 0 percpumem 16 57 0 7 1 0 1 1 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 kstatmem 264 37 0 10 3 0 3 3 0 8 1 scxspl 216 7285 0 7285 4 2 2 3 1 8 2 plimitpl 152 39 0 21 1 0 1 1 0 8 0 sigapl 424 610 0 542 8 0 8 8 0 8 0 knotepl 120 308 0 0 10 0 10 10 0 8 0 kqueuepl 224 65 0 54 2 0 2 2 0 8 1 pipepl 344 132 0 105 3 0 3 3 0 8 0 fdescpl 528 574 0 542 3 0 3 3 0 8 0 filepl 160 2807 0 2581 15 0 15 15 0 8 5 lockfpl 104 103 0 99 1 0 1 1 0 8 0 lockfspl 48 22 0 18 1 0 1 1 0 8 0 sessionpl 144 25 0 15 1 0 1 1 0 8 0 pgrppl 48 35 0 17 1 0 1 1 0 8 0 ucredpl 104 188 0 174 1 0 1 1 0 8 0 zombiepl 144 543 0 542 1 0 1 1 0 8 0 processpl 1232 610 0 542 6 0 6 6 0 8 0 procpl 664 861 0 781 8 0 8 8 0 8 1 sockpl 752 492 0 462 17 0 17 17 0 8 13 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 138 0 0 9 0 9 9 0 8 0 bufpl 280 2583 0 105 177 0 177 177 0 8 0 anonpl 32 5543 0 0 45 0 45 45 0 246 0 amapchunkpl 152 13374 0 12854 27 0 27 27 0 158 3 amappl16 200 2115 0 2087 5 3 2 5 0 8 0 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 423 0 422 1 0 1 1 0 8 0 amappl13 176 118 0 106 1 0 1 1 0 8 0 amappl12 168 846 0 816 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 68 0 53 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 106 0 103 1 0 1 1 0 8 0 amappl7 128 145 0 132 1 0 1 1 0 8 0 amappl6 120 163 0 162 1 0 1 1 0 8 0 amappl5 112 91 0 81 1 0 1 1 0 8 0 amappl4 104 285 0 268 1 0 1 1 0 8 0 amappl3 96 2392 0 2271 4 0 4 4 0 8 0 amappl2 88 516 0 454 2 0 2 2 0 8 0 amappl1 80 9976 0 9364 16 0 16 16 0 8 3 amappl 88 3556 0 3383 5 0 5 5 0 92 0 uvmvnodes 80 106 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma4096 4096 2 0 2 2 1 1 1 0 8 1 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 1 1 0 1 1 0 8 0 uaddrrnd 24 574 0 542 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 574 0 542 1 0 1 1 0 8 0 vmmpekpl 168 6371 0 6340 2 0 2 2 0 8 0 vmmpepl 168 44059 0 42096 89 0 89 89 0 357 3 vmsppl 488 573 0 542 5 0 5 5 0 8 1 rwobjpl 80 15394 0 14333 26 1 25 26 0 8 0 pdppl 4096 1155 0 1084 99 28 71 87 0 8 0 pvpl 32 13530 0 0 110 0 110 110 0 265 0 pmappl 256 573 0 542 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 275 0 31 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff838d4ff0) 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(ffffffff83a9f440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a9f440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80003bfb5bf0,ffff800000079600) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83a9f440) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a9f440) at __mp_lock+0x192 sys/kern/kern_lock.c:173 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x71c6e476d300, count: -10 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:438 witness_checkorder(fffffd806fb18d70,9,0) at witness_checkorder+0x10d1 sys/kern/subr_witness.c:-1 rw_do_enter_write(fffffd806fb18d58,1) at rw_do_enter_write+0xba sys/kern/kern_rwlock.c:234 rrw_enter(fffffd806fb18d58,1) at rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 VOP_LOCK(fffffd806fc181c0,2001) at VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 vn_lock(fffffd806fc181c0,2001) at vn_lock+0xa4 sys/kern/vfs_vnops.c:576 vn_closefile(fffffd806c462ea8,ffff80003bfb62c0) at vn_closefile+0x111 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806c462ea8,ffff80003bfb62c0) at vn_closefile+0x111 sys/kern/vfs_vnops.c:621 fdrop(fffffd806c462ea8,ffff80003bfb62c0) at fdrop+0x121 sys/kern/kern_descrip.c:1281 knote_drop(fffffd806c5d7810,ffff80003bfb62c0) at knote_drop+0x1a1 sys/kern/kern_event.c:2296 knote_remove(ffff80003bfb62c0,fffffd806f307460,fffffd806f3074f0,5,0) at knote_remove+0x215 sys/kern/kern_event.c:-1 knote_fdclose(ffff80003bfb62c0,5) at knote_fdclose+0xf9 sys/kern/kern_event.c:2203 fdrelease(ffff80003bfb62c0,5) at fdrelease+0xf9 sys/kern/kern_descrip.c:761 syscall(ffff80003c47fde0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c47fde0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b87fd3e7e0, count: -14