uvm_fault(0xfffffd8069c70d70, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xa9: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001655e30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff8000015f4000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(31e5f,1,2000,ffff80003c4482b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,1,2000,ffff80003c4482b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2d11a0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805b887bd0,1,fffffd80097fb5b0,ffff80003c4482b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069ac0220,ffff80003c4482b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069ac0220,ffff80003c4482b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8069ac0220,ffff80003c4482b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8069ac0220,ffff80003c4482b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c4482b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c4482b8,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c4482b8,ffff80002a2d1510,ffff80002a2d1460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2d1510) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d1510) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 end trace frame: 0xffff80002a2d1590, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd8069c70d70, 0x48, 0, 1) -> e ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001655e30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff8000015f4000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(31e5f,1,2000,ffff80003c4482b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,1,2000,ffff80003c4482b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2d11a0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805b887bd0,1,fffffd80097fb5b0,ffff80003c4482b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069ac0220,ffff80003c4482b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069ac0220,ffff80003c4482b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8069ac0220,ffff80003c4482b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8069ac0220,ffff80003c4482b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c4482b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c4482b8,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c4482b8,ffff80002a2d1510,ffff80002a2d1460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2d1510) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d1510) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7167c6ba17e0, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a2d1000 rbx 0 rdx 0 rcx 0xffff80003c4482b8 rax 0xffffffff83825ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0xbc40c342aa541c54 r11 0x9fd1a821562688f2 r12 0 r13 0x1 r14 0x28 r15 0x3 rip 0xffffffff829aef39 witness_checkorder+0xa9 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a2d0f50 ss 0x10 witness_checkorder+0xa9: movl 0x20(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=462108 pid=74191 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4482b8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c448cf8,0xffffffff838d9518 process=0xffff800035c149e0 user=0xffff80002a2cc000, vmspace=0xfffffd8069c70d70 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21725 180619 85978 0 2 0 syz-executor 21725 1896 85978 0 3 0x4000080 fsleep syz-executor 15144 449211 2234 0 3 0x80 nanoslp syz-executor 15144 33945 2234 0 3 0x4000080 dtread syz-executor 15144 173733 2234 0 3 0x4000080 fsleep syz-executor 60270 293683 10266 0 3 0x82 sbwait sshd-session 43481 480290 80283 0 3 0x80 nanoslp syz-executor 43481 455223 80283 0 3 0x4000080 sbwait syz-executor 43481 28556 80283 0 3 0x4000080 fsleep syz-executor 78953 118701 51511 0 3 0x80 nanoslp syz-executor 78953 477842 51511 0 3 0x4000080 ttyout syz-executor 78953 444439 51511 0 3 0x4000080 fsleep syz-executor 80283 13554 49194 0 3 0x82 nanoslp syz-executor 51511 245687 49194 0 3 0x82 nanoslp syz-executor 94805 286398 1 0 3 0x100083 ttyin getty 46618 66002 49194 0 2 0xc82 syz-executor 2234 428089 49194 0 3 0x82 nanoslp syz-executor 39072 138132 49194 0 2 0x2 syz-executor 6117 327386 0 0 3 0x14200 bored sosplice 85197 404947 49194 0 3 0x82 nanoslp syz-executor 59081 227565 49194 0 2 0xc82 syz-executor 85978 434197 49194 0 3 0x82 nanoslp syz-executor 49194 182909 54320 0 3 0x82 kqread syz-executor 54320 327298 2378 0 3 0x10008a sigsusp ksh 2378 523093 64719 0 3 0x98 kqread sshd-session 64719 56072 10266 0 3 0x92 kqread sshd-session 10266 398341 1 0 3 0x88 kqread sshd 35543 161363 26935 74 3 0x1100092 bpf pflogd 26935 235825 1 0 3 0x80 sbwait pflogd 38079 299753 61738 73 3 0x1100090 kqread syslogd 61738 514712 1 0 3 0x100082 sbwait syslogd 95578 190135 1 0 3 0x100080 kqread resolvd 67636 250357 75927 77 3 0x100092 kqread dhcpleased 26835 365016 75927 77 3 0x100092 kqread dhcpleased 75927 345743 1 0 3 0x80 kqread dhcpleased 8953 280270 0 0 3 0x14200 bored smr 31461 281340 0 0 2 0x14200 zerothread 63820 120797 0 0 3 0x14200 aiodoned aiodoned 34574 148562 0 0 3 0x14200 syncer update 16384 344057 0 0 3 0x14200 cleaner cleaner 74245 469532 0 0 3 0x14200 reaper reaper 72370 475058 0 0 3 0x14200 pgdaemon pagedaemon 58131 297485 0 0 3 0x14200 bored viomb 8750 422298 0 0 3 0x40014200 acpi0 acpi0 89397 484678 0 0 7 0x40014200 idle1 17646 109298 0 0 3 0x14200 bored softnet7 27112 427055 0 0 3 0x14200 bored softnet6 21212 491913 0 0 3 0x14200 bored softnet5 82912 71818 0 0 3 0x14200 bored softnet4 55279 302718 0 0 3 0x14200 bored softnet3 62085 262869 0 0 3 0x14200 bored softnet2 99186 449077 0 0 3 0x14200 bored softnet1 46587 17412 0 0 3 0x14200 bored softnet0 94382 272543 0 0 3 0x14200 bored systqmp 18572 50515 0 0 3 0x14200 bored systq 10557 58182 0 0 3 0x14200 tmoslp softclockmp 13395 433548 0 0 2 0x40014200 softclock 19352 308041 0 0 3 0x40014200 idle0 1 505672 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 39072 (syz-executor) thread 0xffff80003c448f88 (138132) exclusive rrwlock inode r = 0 (0xfffffd8069bf2208) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 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 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:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069bf2330) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x42b sys/kern/kern_rwlock.c:319 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #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:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11120K 12343K 166960K 13917 0 pcb 17 16K 18K 166960K 471 0 rtable 227 10K 11K 166960K 616 0 pf 40 19K 82K 166960K 239 0 ifaddr 41 7K 8K 166960K 156 0 ifgroup 56 2K 2K 166960K 267 0 sysctl 4 1K 9K 166960K 89 0 counters 70 37K 37K 166960K 292 0 ioctlops 0 0K 4K 166960K 1716 0 iov 0 0K 20K 166960K 133 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1536 97K 97K 166960K 3214 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 18 10K 15K 166960K 57 0 dirhash 12 2K 2K 166960K 57 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 1774 0 sigio 0 0K 0K 166960K 37 0 proc 72 115K 164K 166960K 901 0 subproc 72 4K 4K 166960K 127 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 226 0 in_multi 89 6K 7K 166960K 252 0 ether_multi 1 0K 0K 166960K 14 0 mrt 2 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 811 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 258 180K 196K 166960K 17497 0 UVM aobj 29 4K 4K 166960K 31 0 pinsyscall 44 88K 104K 166960K 3130 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 67 0 NDP 12 0K 2K 166960K 106 0 temp 76 8684K 8763K 166960K 73717 0 kqueue 14 22K 32K 166960K 312 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 120 160 0 157 1 0 1 1 0 8 0 rtentry 176 212 0 122 5 0 5 5 0 8 0 unpcb 144 1173 0 1152 12 10 2 4 0 8 1 syncache 336 27 0 27 4 3 1 1 0 8 1 tcpqe 32 8 0 8 5 4 1 1 0 8 1 tcpcb 736 533 0 518 9 7 2 7 0 8 0 arp 128 24 0 14 1 0 1 1 0 8 0 inpcb 328 1997 0 1974 22 17 5 10 0 8 2 nd6 144 39 0 17 1 0 1 1 0 8 0 pkpcb 40 12 0 12 5 5 0 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 5 0 5 3 2 1 1 0 8 1 ppxss 1192 83 0 82 3 2 1 1 0 8 0 pppxif 1504 21 0 20 4 3 1 1 0 8 0 pfstscr 40 5 0 4 1 0 1 1 0 8 0 pffrag 232 11 0 4 2 1 1 1 0 482 0 pffrnode 88 11 0 4 2 1 1 1 0 8 0 pffrent 40 16 0 9 2 1 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 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 113 0 39 1 0 1 1 0 8 0 pfstkey 128 115 0 41 3 0 3 3 0 8 0 pfstate 384 113 0 41 9 0 9 9 0 8 0 pfrule 1344 30 0 25 2 1 1 2 0 8 0 art_heap8 4096 3 0 1 3 1 2 3 0 8 0 art_heap4 256 949 0 525 34 5 29 29 0 8 2 art_table 40 952 0 526 5 0 5 5 0 8 0 art_node 32 211 0 132 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 15 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 51 0 35 1 0 1 1 0 8 0 shmpl 112 28 0 2 1 0 1 1 0 8 0 dirhash 1024 48 0 31 3 0 3 3 0 8 0 dino2pl 256 4661 0 3145 97 1 96 96 0 8 0 ffsino 296 4661 0 3145 117 0 117 117 0 8 0 nchpl 144 6989 0 5275 64 0 64 64 0 8 0 rtmask 32 14 0 14 5 4 1 1 0 8 1 uvmvnodes 80 5395 0 0 111 0 111 111 0 8 0 vnodes 216 5395 0 0 300 0 300 300 0 8 0 namei 1024 26438 0 26437 4 3 1 2 0 8 0 percpumem 16 161 0 111 1 0 1 1 0 8 0 kstatmem 264 158 0 132 5 2 3 3 0 8 1 scsiplug 72 6 0 6 3 3 0 1 0 8 0 scxspl 216 58861 0 58861 13 11 2 8 1 8 2 plimitpl 152 375 0 357 1 0 1 1 0 8 0 sigapl 424 2076 0 2021 7 0 7 7 0 8 0 knotepl 120 543 0 0 17 0 17 17 0 8 0 kqueuepl 224 622 0 611 6 4 2 3 0 8 1 pipepl 344 343 0 316 3 0 3 3 0 8 0 fdescpl 528 2049 0 2017 3 0 3 3 0 8 0 filepl 160 14365 0 14130 27 13 14 18 0 8 0 lockfpl 104 1411 0 1409 5 4 1 2 0 8 0 lockfspl 48 494 0 492 1 0 1 1 0 8 0 sessionpl 144 52 0 42 1 0 1 1 0 8 0 pgrppl 48 124 0 106 1 0 1 1 0 8 0 ucredpl 104 2312 0 2299 1 0 1 1 0 8 0 zombiepl 144 2024 0 2021 1 0 1 1 0 8 0 processpl 1248 2076 0 2021 5 0 5 5 0 8 0 procpl 656 4572 0 4510 8 1 7 7 0 8 0 sosppl 168 14 0 14 4 3 1 1 0 8 1 sockpl 752 3388 0 3341 35 26 9 18 0 8 3 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 43 0 0 6 1 5 5 0 8 0 mtagpl 96 32 0 0 1 0 1 1 0 8 0 mbufpl 256 280 0 0 15 0 15 15 0 8 0 bufpl 280 25886 0 19744 440 1 439 440 0 8 0 anonpl 32 16146 0 0 131 1 130 130 0 246 0 amapchunkpl 152 66789 0 66219 59 29 30 36 0 158 7 amappl16 200 9396 0 9270 81 58 23 33 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 176 0 163 1 0 1 1 0 8 0 amappl13 176 15 0 15 1 1 0 1 0 8 0 amappl12 168 2850 0 2818 3 1 2 3 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 37 0 34 1 0 1 1 0 8 0 amappl7 128 143 0 130 1 0 1 1 0 8 0 amappl6 120 263 0 258 1 0 1 1 0 8 0 amappl5 112 150 0 140 1 0 1 1 0 8 0 amappl4 104 404 0 383 1 0 1 1 0 8 0 amappl3 96 11925 0 11810 4 0 4 4 0 8 0 amappl2 88 921 0 853 2 0 2 2 0 8 0 amappl1 80 20443 0 19748 15 0 15 15 0 8 0 amappl 88 16279 0 16102 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 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 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 257 0 257 4 4 0 1 0 8 0 dma64 64 8 0 8 2 2 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 30 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2049 0 2017 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2049 0 2017 1 0 1 1 0 8 0 vmmpekpl 168 18897 0 18843 3 0 3 3 0 8 0 vmmpepl 168 141904 0 139651 143 30 113 116 0 357 9 vmsppl 488 2048 0 2017 5 0 5 5 0 8 0 rwobjpl 80 47195 0 40624 144 2 142 142 0 8 7 pdppl 4096 4105 0 4034 141 68 73 87 0 8 2 pvpl 32 24088 0 0 194 1 193 193 0 265 0 pmappl 256 2048 0 2017 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 346 0 96 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xa9 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x4a sys/kern/kern_lock.c:260 clockintr_unbind(ffff800001655e30,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff8000015f4000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(31e5f,1,2000,ffff80003c4482b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,1,2000,ffff80003c4482b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2d11a0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805b887bd0,1,fffffd80097fb5b0,ffff80003c4482b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069ac0220,ffff80003c4482b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069ac0220,ffff80003c4482b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8069ac0220,ffff80003c4482b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8069ac0220,ffff80003c4482b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c4482b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c4482b8,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c4482b8,ffff80002a2d1510,ffff80002a2d1460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2d1510) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d1510) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7167c6ba17e0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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 acpicpu_idle() at acpicpu_idle+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5