*cpu0: uvm_fault(0xfffffd806ef965c0, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001451000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff80003c45c038) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003c45c038) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002f000de0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8078a4f368,81,fffffd80097fb5b0,ffff80003c45c038) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8067db2690,ffff80003c45c038) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8067db2690,ffff80003c45c038) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8067db2690,ffff80003c45c038) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8067db2690,ffff80003c45c038) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c45c038) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c45c038,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c45c038,ffff80002f001150,ffff80002f0010a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f001150) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f001150) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x736415626c60, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002f000d10 rbx 0x1 rdx 0 rcx 0xffff80003c45c038 rax 0xffffffff8384a870 dt_prov_static r8 0 r9 0 r10 0x5fc01c0e92f0b728 r11 0x8f9a236fb6e363aa r12 0 r13 0 r14 0 r15 0xffff80000159b100 rip 0xffffffff81997a38 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002f000ce0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=54690 pid=69392 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c45c038 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c44f4e8,0xffff80003c44fcc0 process=0xffff80003bc27510 user=0xffff80002effc000, vmspace=0xfffffd806ef965c0 estcpu=36, cpticks=14, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 15752 88668 56311 0 2 0 syz-executor 46216 25648 23109 0 2 0 syz-executor 17455 21994 33800 0 2 0 syz-executor 17455 424572 33800 0 2 0x4000000 syz-executor 7633 183207 24386 0 3 0x80 nanoslp syz-executor 7633 211604 24386 0 3 0x4000080 pipewr syz-executor 7633 465222 24386 0 3 0x4000080 pipewr syz-executor 7633 420253 24386 0 3 0x4000080 fsleep syz-executor 31912 212430 58830 0 2 0x11 syz-executor 31912 270348 58830 0 3 0x4000090 fsleep syz-executor 15701 260869 67262 0 2 0 syz-executor 15701 295942 67262 0 7 0x4000000 syz-executor 15701 32595 67262 0 3 0x4000080 fsleep syz-executor 15701 457456 67262 0 3 0x4000080 fsleep syz-executor 15701 96684 67262 0 3 0x4000080 fsleep syz-executor 58830 110313 39519 0 2 0xc82 syz-executor 25532 410287 39519 0 3 0x82 nanoslp syz-executor 56243 522807 39519 0 2 0x3 syz-executor 4565 333984 0 0 3 0x14280 nfsidl nfsio 22580 94830 0 0 3 0x14280 nfsidl nfsio 13930 100834 0 0 3 0x14280 nfsidl nfsio 24329 136176 0 0 3 0x14280 nfsidl nfsio 53080 467428 0 0 3 0x14280 nfsidl nfsio 8678 24571 0 0 3 0x14280 nfsidl nfsio 94516 98940 0 0 3 0x14280 nfsidl nfsio 59728 339242 0 0 3 0x14280 nfsidl nfsio 43148 24269 0 0 3 0x14280 nfsidl nfsio 65449 97083 0 0 3 0x14280 nfsidl nfsio 18245 285370 0 0 3 0x14280 nfsidl nfsio 37011 55592 0 0 3 0x14280 nfsidl nfsio 55804 474135 0 0 3 0x14280 nfsidl nfsio 2866 390259 0 0 3 0x14280 nfsidl nfsio 65881 76009 0 0 3 0x14280 nfsidl nfsio 10796 233411 0 0 3 0x14280 nfsidl nfsio 28496 358855 0 0 3 0x14280 nfsidl nfsio 69629 146381 0 0 3 0x14280 nfsidl nfsio 84379 57099 0 0 3 0x14280 nfsidl nfsio 63048 38545 0 0 3 0x14280 nfsidl nfsio 94335 278389 0 0 3 0x14200 bored sosplice 24386 465142 39519 0 3 0x82 nanoslp syz-executor 56311 488482 39519 0 3 0x82 nanoslp syz-executor 33800 417970 39519 0 2 0xc82 syz-executor 23109 482599 39519 0 3 0x82 nanoslp syz-executor 67262 190385 39519 0 2 0xc82 syz-executor 39519 142645 95370 0 3 0x82 kqread syz-executor 95370 291489 9119 0 3 0x10008a sigsusp ksh 9119 213177 87096 0 3 0x98 kqread sshd-session 87096 513368 65954 0 3 0x92 kqread sshd-session 16745 187542 1 0 3 0x100083 ttyopn getty 65954 83454 1 0 3 0x88 kqread sshd 10807 40873 95708 74 3 0x1100092 bpf pflogd 95708 101158 1 0 3 0x80 sbwait pflogd 79212 519178 90076 73 3 0x1100090 kqread syslogd 90076 294920 1 0 3 0x100082 sbwait syslogd 32126 351472 1 0 3 0x100080 kqread resolvd 3432 127072 40145 77 3 0x100092 kqread dhcpleased 2369 315966 40145 77 3 0x100092 kqread dhcpleased 40145 326382 1 0 3 0x80 kqread dhcpleased 6426 40355 0 0 3 0x14200 bored smr 21153 168457 0 0 2 0x14200 zerothread 92337 374529 0 0 3 0x14200 aiodoned aiodoned 65282 457194 0 0 3 0x14200 syncer update 36788 467057 0 0 3 0x14200 cleaner cleaner 37406 69667 0 0 2 0x14200 reaper 5198 358015 0 0 3 0x14200 pgdaemon pagedaemon 54006 77040 0 0 3 0x14200 bored viomb 75604 446686 0 0 3 0x40014200 acpi0 acpi0 92702 220985 0 0 3 0x40014200 idle1 66449 173232 0 0 3 0x14200 bored softnet7 97683 397316 0 0 3 0x14200 bored softnet6 37665 290979 0 0 3 0x14200 bored softnet5 68920 477979 0 0 3 0x14200 bored softnet4 10117 206612 0 0 3 0x14200 bored softnet3 94173 103689 0 0 3 0x14200 bored softnet2 90848 398483 0 0 3 0x14200 bored softnet1 54630 407681 0 0 3 0x14200 bored softnet0 63114 85800 0 0 3 0x14200 bored systqmp 87660 189956 0 0 3 0x14200 bored systq 48839 305323 0 0 3 0x14200 tmoslp softclockmp 23113 282607 0 0 2 0x40014200 softclock 56803 350621 0 0 3 0x40014200 idle0 1 167188 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 46216 (syz-executor) thread 0xffff80003c45dcc0 (25648) exclusive rwlock vmmaplk r = 0 (0xfffffd805d0d5130) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1918 #4 uvm_fault_check+0x895 uvmfault_amapcopy sys/uvm/uvm_fault.c:235 [inline] #4 uvm_fault_check+0x895 sys/uvm/uvm_fault.c:784 #5 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #6 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #7 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #8 recall_trap+0x8 Process 17455 (syz-executor) thread 0xffff80003c45d4f8 (424572) exclusive rrwlock inode r = 0 (0xfffffd8067d98208) #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+0xa3 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232 #6 ufs_lookup+0x16bd sys/ufs/ufs/ufs_lookup.c:573 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #9 namei+0x7ca sys/kern/vfs_lookup.c:250 #10 vn_open+0x15a sys/kern/vfs_vnops.c:140 #11 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #13 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80797a25b8) #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+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 vn_open+0x15a sys/kern/vfs_vnops.c:140 #8 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #10 Xsyscall+0x128 Process 37406 (reaper) thread 0xffff8000ffffcd00 (69667) exclusive rwlock kmmaplk r = 0 (0xffffffff8390d4f0) #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 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_unmap+0x7d sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304 #6 reaper+0x1aa sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10250 11064K 11732K 166960K 12314 0 pcb 17 19K 21K 166960K 371 0 rtable 169 8K 9K 166960K 563 0 pf 36 18K 131090K 166960K 218 0 ifaddr 36 6K 7K 166960K 139 0 ifgroup 58 2K 3K 166960K 278 0 sysctl 4 1K 9K 166960K 14 0 counters 68 36K 38K 166960K 218 0 ioctlops 0 0K 4K 166960K 1715 0 iov 0 0K 24K 166960K 137 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 91K 166960K 2473 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 9K 166960K 30 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 95 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 1496 0 sigio 0 0K 0K 166960K 42 0 proc 72 115K 164K 166960K 738 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 167 0 in_multi 63 4K 7K 166960K 190 0 ether_multi 1 0K 0K 166960K 9 0 mrt 2 0K 0K 166960K 22 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 620 0 fusefs mount 1 32K 32K 166960K 1 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 242 160K 178K 166960K 15240 0 UVM aobj 45 3K 3K 166960K 45 0 pinsyscall 42 84K 107K 166960K 2750 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 110 0 NDP 12 0K 2K 166960K 103 0 temp 82 8652K 8896K 166960K 79133 0 kqueue 13 20K 29K 166960K 273 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 321 0 318 7 5 2 3 0 8 1 rtentry 176 165 0 100 5 0 5 5 0 8 0 unpcb 144 998 0 979 11 7 4 6 0 8 3 syncache 336 14 0 14 4 3 1 1 0 8 1 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 630 0 623 20 18 2 13 0 8 1 arp 128 19 0 8 1 0 1 1 0 8 0 inpcb 328 1665 0 1653 22 20 2 12 0 8 0 nd6 144 27 0 18 1 0 1 1 0 8 0 pkpcb 40 9 0 9 4 3 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1192 37 0 37 4 3 1 1 0 8 1 pppxif 1504 4 0 4 2 1 1 1 0 8 1 pffrag 232 11 0 6 1 0 1 1 0 482 0 pffrnode 88 7 0 2 1 0 1 1 0 8 0 pffrent 40 18 0 13 1 0 1 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 1 0 1 1 1 0 1 0 8 0 pfstitem 24 101 0 41 1 0 1 1 0 8 0 pfstkey 128 115 0 45 3 0 3 3 0 8 0 pfstate 384 102 0 43 6 0 6 6 0 8 0 pfrule 1344 43 0 37 2 1 1 2 0 8 0 rttmr 136 7 0 7 3 2 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 897 0 607 32 8 24 28 0 8 4 art_table 40 901 0 607 5 0 5 5 0 8 0 art_node 32 165 0 108 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 93 0 83 1 0 1 1 0 8 0 shmpl 112 42 0 0 2 0 2 2 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 4102 0 2587 96 0 96 96 0 8 0 ffsino 296 4102 0 2587 117 0 117 117 0 8 0 nchpl 144 6104 0 4402 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 4004 0 0 82 0 82 82 0 8 0 vnodes 216 4004 0 0 223 0 223 223 0 8 0 namei 1024 21042 0 21041 5 4 1 2 0 8 0 percpumem 16 124 0 75 1 0 1 1 0 8 0 kstatmem 264 162 0 134 3 0 3 3 0 8 0 scsiplug 72 7 0 7 3 2 1 1 0 8 1 scxspl 216 31199 0 31199 10 9 1 8 1 8 1 plimitpl 152 284 0 264 1 0 1 1 0 8 0 sigapl 424 1821 0 1747 9 0 9 9 0 8 0 knotepl 120 792 0 0 24 0 24 24 0 8 0 kqueuepl 224 443 0 432 3 0 3 3 0 8 2 pipepl 344 245 0 216 3 0 3 3 0 8 0 fdescpl 528 1775 0 1744 3 0 3 3 0 8 0 filepl 160 11340 0 11111 25 7 18 18 0 8 6 lockfpl 104 507 0 505 1 0 1 1 0 8 0 lockfspl 48 186 0 184 1 0 1 1 0 8 0 sessionpl 144 37 0 28 1 0 1 1 0 8 0 pgrppl 48 63 0 46 1 0 1 1 0 8 0 ucredpl 104 2243 0 2229 1 0 1 1 0 8 0 zombiepl 144 2155 0 2154 1 0 1 1 0 8 0 processpl 1232 1821 0 1747 6 0 6 6 0 8 0 procpl 664 4005 0 3921 9 1 8 9 0 8 0 sosppl 168 10 0 10 5 4 1 1 0 8 1 sockpl 752 3066 0 3032 49 36 13 17 0 8 8 mcl64k 65536 20 0 0 3 0 3 3 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 14 0 0 2 0 2 2 0 8 0 mcl4k 4096 110 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 38 0 0 5 0 5 5 0 8 0 mtagpl 96 7 0 0 1 0 1 1 0 8 0 mbufpl 256 284 0 0 18 0 18 18 0 8 0 bufpl 280 12262 0 6119 440 0 440 440 0 8 0 anonpl 32 10545 0 0 85 0 85 85 0 246 0 amapchunkpl 152 50834 0 50271 41 9 32 32 0 158 6 amappl16 200 5169 0 5083 28 13 15 15 0 8 7 amappl15 192 6 0 6 2 2 0 1 0 8 0 amappl14 184 145 0 132 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 2503 0 2472 4 1 3 3 0 8 0 amappl11 160 57 0 43 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 31 0 28 1 0 1 1 0 8 0 amappl7 128 131 0 119 1 0 1 1 0 8 0 amappl6 120 232 0 228 1 0 1 1 0 8 0 amappl5 112 142 0 132 1 0 1 1 0 8 0 amappl4 104 363 0 343 1 0 1 1 0 8 0 amappl3 96 10362 0 10252 5 1 4 4 0 8 0 amappl2 88 815 0 750 2 0 2 2 0 8 0 amappl1 80 16862 0 16255 17 2 15 15 0 8 1 amappl 88 14192 0 14024 5 0 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 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 128 255 0 255 3 3 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 44 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1775 0 1744 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1775 0 1744 1 0 1 1 0 8 0 vmmpekpl 168 15528 0 15476 3 0 3 3 0 8 0 vmmpepl 168 118459 0 116373 114 7 107 108 0 357 7 vmsppl 488 1774 0 1744 7 2 5 5 0 8 0 rwobjpl 80 36729 0 31681 109 1 108 109 0 8 0 pdppl 4096 3558 0 3488 116 44 72 86 0 8 2 pvpl 32 19005 0 0 155 1 154 154 0 265 0 pmappl 256 1774 0 1744 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 332 0 81 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001451000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(21e5f,81,2000,ffff80003c45c038) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,81,2000,ffff80003c45c038) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002f000de0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8078a4f368,81,fffffd80097fb5b0,ffff80003c45c038) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8067db2690,ffff80003c45c038) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8067db2690,ffff80003c45c038) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8067db2690,ffff80003c45c038) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8067db2690,ffff80003c45c038) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c45c038) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c45c038,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c45c038,ffff80002f001150,ffff80002f0010a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002f001150) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002f001150) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x736415626c60, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0xa507f0b5f80, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x68 savectx() at savectx+0xae end of kernel end trace frame: 0xa507f0b5f80, count: -5