uvm_fault(0xfffffd806c8db3e8, 0x48, 0, 1) -> e kernel: page fault trap, code=0 Stopped at witness_checkorder+0xb5: movl 0x20(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000172b230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000177c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e60,1,2000,ffff800039fd9ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e60,1,2000,ffff800039fd9ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c41f3f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80686fcce0,1,fffffd80097fd208,ffff800039fd9ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064330eb8,ffff800039fd9ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064330eb8,ffff800039fd9ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064330eb8,ffff800039fd9ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8064330eb8,ffff800039fd9ca8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff800039fd9ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff800039fd9ca8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039fd9ca8,ffff80003c41f760,ffff80003c41f6b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c41f760) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41f760) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 end trace frame: 0xffff80003c41f7e0, 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(0xfffffd806c8db3e8, 0x48, 0, 1) -> e ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000172b230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000177c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e60,1,2000,ffff800039fd9ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e60,1,2000,ffff800039fd9ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c41f3f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80686fcce0,1,fffffd80097fd208,ffff800039fd9ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064330eb8,ffff800039fd9ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064330eb8,ffff800039fd9ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064330eb8,ffff800039fd9ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8064330eb8,ffff800039fd9ca8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff800039fd9ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff800039fd9ca8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039fd9ca8,ffff80003c41f760,ffff80003c41f6b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c41f760) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41f760) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c8a9ddc2cd0, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c41f210 rbx 0 rdx 0 rcx 0xffff800039fd9ca8 rax 0xffffffff83946ffe cpu_info_full_primary+0x1ffe r8 0 r9 0x1 r10 0xefeccd4fe74054e r11 0xe470edc7e258e1df r12 0xfe r13 0x9 r14 0x28 r15 0 rip 0xffffffff8187cd35 witness_checkorder+0xb5 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c41f170 ss 0 witness_checkorder+0xb5: movl 0x20(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=492431 pid=33191 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff800039fd9ca8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff800039fd8fb0,0xffff8000367bc2d8 process=0xffff800033fb5360 user=0xffff80003c41a000, vmspace=0xfffffd806c8db3e8 estcpu=36, cpticks=8, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21308 127251 86774 0 2 0 syz-executor 21308 297921 86774 0 3 0x4000080 fsleep syz-executor 15762 294372 29974 0 2 0 syz-executor 15762 486489 29974 0 3 0x4000080 fsleep syz-executor 15762 90430 29974 0 3 0x4000080 fsleep syz-executor 12640 195305 34970 0 2 0 syz-executor 12640 158991 34970 0 3 0x4000080 fsleep syz-executor 95797 1305 0 0 3 0x14200 acct acct 14219 290184 95300 0 3 0x3000 suspend syz-executor 14219 223619 95300 0 2 0x4081000 syz-executor 76268 433489 17760 0 3 0x3000 suspend syz-executor 76268 93618 17760 0 2 0x4081000 syz-executor 76268 404047 17760 0 2 0x4081c00 syz-executor 34970 416128 5668 0 2 0xc82 syz-executor 17760 32390 5668 0 3 0x82 wait syz-executor 86774 194062 5668 0 3 0x82 nanoslp syz-executor 10188 367824 5668 0 2 0xc82 syz-executor 29974 246702 5668 0 3 0x82 nanoslp syz-executor 81082 483538 5668 0 2 0xc82 syz-executor 65779 162346 5668 0 2 0xc82 syz-executor 95300 487435 5668 0 3 0x82 wait syz-executor 5668 271062 51368 0 3 0x82 kqread syz-executor 51368 477085 70463 0 3 0x10008a sigsusp ksh 70463 121815 43200 0 3 0x98 kqread sshd-session 43200 482864 4782 0 3 0x92 kqread sshd-session 92275 208947 1 0 3 0x100083 ttyopn getty 4782 68909 1 0 3 0x88 kqread sshd 64181 108673 7022 74 3 0x1100092 bpf pflogd 7022 16107 1 0 3 0x80 sbwait pflogd 92735 465079 34260 73 3 0x1100090 kqread syslogd 34260 53314 1 0 3 0x100082 sbwait syslogd 25097 11321 1 0 3 0x100080 kqread resolvd 76302 255016 88390 77 3 0x100092 kqread dhcpleased 5260 466379 88390 77 3 0x100092 kqread dhcpleased 88390 105028 1 0 3 0x80 kqread dhcpleased 43536 208353 0 0 3 0x14200 bored smr 66371 467032 0 0 2 0x14200 zerothread 82765 123111 0 0 3 0x14200 aiodoned aiodoned 15251 10407 0 0 3 0x14200 syncer update 55644 379133 0 0 3 0x14200 cleaner cleaner 50787 414911 0 0 3 0x14200 reaper reaper 80893 398496 0 0 3 0x14200 pgdaemon pagedaemon 28895 470150 0 0 3 0x14200 bored viomb 4892 116837 0 0 3 0x40014200 acpi0 acpi0 72014 455289 0 0 7 0x40014200 idle1 67805 94095 0 0 3 0x14200 bored softnet1 18047 6415 0 0 3 0x14200 bored softnet0 94211 429698 0 0 3 0x14200 smrbar systqmp 31832 92305 0 0 3 0x14200 bored systq 49103 98320 0 0 3 0x14200 tmoslp softclockmp 78388 224287 0 0 3 0x40014200 tmoslp softclock 77149 378726 0 0 3 0x40014200 idle0 1 514118 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 14219 (syz-executor) thread 0xffff8000367bcd28 (223619) exclusive rrwlock inode r = 0 (0xfffffd807234f498) #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:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x2bd sys/kern/sys_generic.c:384 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 76268 (syz-executor) thread 0xffff8000fffeed10 (93618) exclusive rrwlock inode r = 0 (0xfffffd8064b398e0) #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:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x2bd sys/kern/sys_generic.c:384 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 94211 (systqmp) thread 0xffff8000ffffe298 (429698) shared rwlock systqmp r = 0 (0xffffffff83928a38) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11156 12153K 14027K 166960K 13979 0 pcb 19 16K 18K 166960K 494 0 rtable 244 17K 17K 166960K 776 0 pf 46 19K 83K 166960K 432 0 ifaddr 40 7K 8K 166960K 151 0 ifgroup 65 2K 3K 166960K 279 0 sysctl 4 1K 9K 166960K 111 0 counters 76 37K 38K 166960K 288 0 ioctlops 0 0K 6K 166960K 1862 0 iov 0 0K 18K 166960K 208 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1426 90K 90K 166960K 3252 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 9K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 104 0 dirhash 12 2K 3K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1890 0 sigio 1 0K 0K 166960K 18 0 proc 73 115K 164K 166960K 834 0 subproc 72 4K 4K 166960K 111 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 275 0 in_multi 73 5K 7K 166960K 208 0 ether_multi 1 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 32 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 717 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 264 177K 198K 166960K 19481 0 UVM aobj 26 18K 20K 166960K 30 0 pinsyscall 43 86K 103K 166960K 3218 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 136 0 NDP 15 0K 2K 166960K 108 0 temp 83 9088K 9216K 166960K 83268 0 kqueue 14 22K 32K 166960K 366 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 120 260 0 256 3 2 1 2 0 8 0 rtentry 176 195 0 114 5 0 5 5 0 8 0 unpcb 144 1269 0 1248 12 11 1 4 0 8 0 syncache 336 15 0 15 7 7 0 1 0 8 0 tcpqe 32 9 0 9 6 6 0 1 0 8 0 tcpcb 736 795 0 787 22 19 3 7 0 8 1 arp 136 28 0 14 1 0 1 1 0 8 0 inpcb 328 2308 0 2294 26 19 7 8 0 8 5 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 152 42 0 22 1 0 1 1 0 8 0 pkpcb 40 11 0 11 6 6 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 78 0 78 2 1 1 1 0 8 1 pppxif 1504 9 0 9 5 5 0 1 0 8 0 pfstscr 40 3 0 3 3 3 0 1 0 8 0 pffrag 232 16 0 7 1 0 1 1 0 482 0 pffrnode 88 16 0 7 1 0 1 1 0 8 0 pffrent 40 23 0 14 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 9 0 4 2 1 1 1 0 8 0 pfstlim 224 2 0 2 1 1 0 1 0 8 0 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 8 0 2 1 0 1 1 0 8 0 pfstitem 24 123 0 84 1 0 1 1 0 8 0 pfstkey 128 132 0 93 2 0 2 2 0 8 0 pfstate 448 127 0 89 6 0 6 6 0 8 0 pfrule 1360 74 0 28 5 1 4 4 0 8 0 art_heap8 4096 5 0 2 4 1 3 3 0 8 0 art_heap4 256 867 0 493 32 6 26 31 0 8 0 art_table 40 872 0 495 5 0 5 5 0 8 0 art_node 32 194 0 121 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 7 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 100 0 90 1 0 1 1 0 8 0 shmpl 112 17 0 2 1 0 1 1 0 8 0 dirhash 1024 41 0 24 3 0 3 3 0 8 0 dino2pl 256 5397 0 3928 93 0 93 93 0 8 0 ffsino 296 5397 0 3928 114 0 114 114 0 8 0 nchpl 144 8019 0 6299 64 0 64 64 0 8 0 rtmask 32 17 0 17 6 6 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 29339 0 29339 9 8 1 5 0 8 1 percpumem 16 159 0 106 1 0 1 1 0 8 0 vcpupl 3968 10 0 2 2 0 2 2 0 8 0 vmpool 848 10 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 174 0 138 3 0 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 12 0 12 6 6 0 1 0 8 0 scxspl 216 44614 0 44614 14 13 1 8 1 8 1 plimitpl 152 628 0 607 1 0 1 1 0 8 0 sigapl 424 2206 0 2157 7 1 6 7 0 8 0 knotepl 120 511 0 0 16 0 16 16 0 8 0 kqueuepl 224 957 0 947 18 17 1 9 0 8 0 pipepl 344 352 0 323 3 0 3 3 0 8 0 fdescpl 528 2185 0 2153 3 0 3 3 0 8 0 filepl 160 16451 0 16182 34 20 14 17 0 8 0 lockfpl 104 939 0 936 4 3 1 2 0 8 0 lockfspl 48 333 0 330 1 0 1 1 0 8 0 sessionpl 144 36 0 27 1 0 1 1 0 8 0 pgrppl 48 111 0 94 1 0 1 1 0 8 0 ucredpl 104 3213 0 3200 1 0 1 1 0 8 0 zombiepl 144 3029 0 3024 1 0 1 1 0 8 0 processpl 1232 2206 0 2157 5 0 5 5 0 8 0 procpl 664 5191 0 5135 7 0 7 7 0 8 1 sosppl 176 29 0 29 5 4 1 1 0 8 1 sockpl 752 3994 0 3955 32 21 11 12 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 1 15 16 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1763 0 0 111 0 111 111 0 8 0 bufpl 280 16309 0 10179 439 0 439 439 0 8 0 anonpl 32 10903 0 0 88 0 88 88 0 246 0 amapchunkpl 152 66582 0 65969 63 31 32 37 0 158 7 amappl16 200 6866 0 6704 56 47 9 22 0 8 0 amappl15 192 6 0 6 2 2 0 1 0 8 0 amappl14 184 473 0 472 1 0 1 1 0 8 0 amappl13 176 159 0 147 1 0 1 1 0 8 0 amappl12 168 2556 0 2525 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 66 0 51 1 0 1 1 0 8 0 amappl9 144 262 0 262 1 1 0 1 0 8 0 amappl8 136 118 0 115 1 0 1 1 0 8 0 amappl7 128 183 0 170 1 0 1 1 0 8 0 amappl6 120 198 0 196 1 0 1 1 0 8 0 amappl5 112 187 0 177 1 0 1 1 0 8 0 amappl4 104 375 0 355 1 0 1 1 0 8 0 amappl3 96 13423 0 13292 4 0 4 4 0 8 0 amappl2 88 705 0 644 2 0 2 2 0 8 0 amappl1 80 21606 0 21002 27 13 14 17 0 8 0 amappl 88 18262 0 18075 5 0 5 5 0 92 0 uvmvnodes 80 165 0 0 4 0 4 4 0 8 0 dma16384 16384 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 7 0 7 2 2 0 1 0 8 0 dma128 128 258 0 258 5 5 0 1 0 8 0 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 9 0 9 2 2 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 29 0 4 1 0 1 1 0 8 0 uaddrrnd 24 2185 0 2153 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2185 0 2153 1 0 1 1 0 8 0 vmmpekpl 168 20035 0 19987 3 0 3 3 0 8 0 vmmpepl 168 150010 0 147874 131 34 97 105 0 357 3 vmsppl 488 2184 0 2153 6 1 5 5 0 8 0 rwobjpl 80 42521 0 41239 32 2 30 31 0 8 0 pdppl 4096 4397 0 4318 142 62 80 85 0 8 1 pvpl 32 22806 0 0 185 1 184 184 0 265 0 pmappl 256 2194 0 2155 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 466 0 111 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace witness_checkorder(28,9,0) at witness_checkorder+0xb5 sys/kern/subr_witness.c:779 mtx_enter(18) at mtx_enter+0x95 sys/kern/kern_lock.c:406 clockintr_unbind(ffff80000172b230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000177c000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:589 dtclose(41e60,1,2000,ffff800039fd9ca8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(41e60,1,2000,ffff800039fd9ca8) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c41f3f0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80686fcce0,1,fffffd80097fd208,ffff800039fd9ca8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064330eb8,ffff800039fd9ca8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064330eb8,ffff800039fd9ca8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064330eb8,ffff800039fd9ca8) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8064330eb8,ffff800039fd9ca8) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff800039fd9ca8) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff800039fd9ca8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff800039fd9ca8,ffff80003c41f760,ffff80003c41f6b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c41f760) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c41f760) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c8a9ddc2cd0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299bdff0) 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+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299bdff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299bdff0) 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+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299bdff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5