uvm_fault(0xfffffd806c9693e8, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 437942 78213 0 0x2 0x1 1 syz-executor dt_ioctl_record_stop(ffff800001606000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c4234f0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4234f0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000367d42c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8068ad8798,81,fffffd80097fd618,ffff80003c4234f0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80648ffed8,ffff80003c4234f0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80648ffed8,ffff80003c4234f0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80648ffed8,ffff80003c4234f0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80648ffed8,ffff80003c4234f0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4234f0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4234f0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4234f0,ffff8000367d4630,ffff8000367d4580) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000367d4630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000367d4630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c9b2f29f7b0, count: 3 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(0xfffffd806c9693e8, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001606000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c4234f0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4234f0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000367d42c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8068ad8798,81,fffffd80097fd618,ffff80003c4234f0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80648ffed8,ffff80003c4234f0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80648ffed8,ffff80003c4234f0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80648ffed8,ffff80003c4234f0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80648ffed8,ffff80003c4234f0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4234f0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4234f0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4234f0,ffff8000367d4630,ffff8000367d4580) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000367d4630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000367d4630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c9b2f29f7b0, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000367d41f0 rbx 0x1 rdx 0 rcx 0xffff80003c4234f0 rax 0xffffffff8384f0c8 dt_prov_syscall r8 0xffffffffffffffff r9 0 r10 0xe71cd8b7a369a20f r11 0x9a235ac2d4d7dde0 r12 0 r13 0 r14 0 r15 0xffff80000152fa00 rip 0xffffffff81303548 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff8000367d41c0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=92164 pid=52546 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=74, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4234f0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe94e0,0xffff80003c422040 process=0xffff80003c4909d0 user=0xffff8000367cf000, vmspace=0xfffffd806c9693e8 estcpu=24, cpticks=111, pctcpu=1.7, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 18408 19234 30435 0 2 0 syz-executor 18408 165589 30435 0 2 0x4000000 syz-executor 18408 498333 30435 0 3 0x4000080 fsleep syz-executor 18408 151239 30435 0 3 0x4000080 fsleep syz-executor 90462 478483 60044 0 3 0x80 nanoslp syz-executor 90462 504863 60044 0 3 0x4000000 smrbar syz-executor 90462 327329 60044 0 3 0x4000080 fsleep syz-executor 55219 422661 78213 0 2 0 syz-executor 55219 281608 78213 0 2 0x4000000 syz-executor 75591 223874 70255 0 2 0x10 syz-executor 75591 227636 70255 0 3 0x4000090 semwait syz-executor 75591 126783 70255 0 2 0x4000010 syz-executor 51137 229332 68841 0 2 0 syz-executor 51137 124099 68841 0 2 0x4000000 syz-executor 51137 379519 68841 0 3 0x4000080 fsleep syz-executor 51137 253357 68841 0 3 0x4000080 fsleep syz-executor 77354 65119 0 0 3 0x14280 nfsidl nfsio 70060 46092 0 0 3 0x14280 nfsidl nfsio 7539 337797 0 0 3 0x14280 nfsidl nfsio 20366 437371 0 0 3 0x14280 nfsidl nfsio 73188 335149 0 0 3 0x14280 nfsidl nfsio 50238 239115 0 0 3 0x14280 nfsidl nfsio 39086 255175 0 0 3 0x14280 nfsidl nfsio 94495 139031 0 0 3 0x14280 nfsidl nfsio 77426 184276 0 0 3 0x14280 nfsidl nfsio 27905 324310 0 0 3 0x14280 nfsidl nfsio 3302 245794 0 0 3 0x14280 nfsidl nfsio 8006 233929 0 0 3 0x14280 nfsidl nfsio 65822 4515 0 0 3 0x14280 nfsidl nfsio 81321 53479 0 0 3 0x14280 nfsidl nfsio 8912 510187 0 0 3 0x14280 nfsidl nfsio 7079 350264 0 0 3 0x14280 nfsidl nfsio 33363 418893 0 0 3 0x14280 nfsidl nfsio 64530 267097 0 0 3 0x14280 nfsidl nfsio 42100 323553 0 0 3 0x14280 nfsidl nfsio 5507 458026 0 0 3 0x14280 nfsidl nfsio 68841 446605 11192 0 3 0x82 nanoslp syz-executor 78213 437942 11192 0 7 0x3 syz-executor 62037 489107 11192 0 3 0x82 wait syz-executor 30435 449229 11192 0 3 0x82 nanoslp syz-executor 91649 114814 11192 0 3 0x10000082 nanoslp syz-executor 60044 462418 11192 0 3 0x82 nanoslp syz-executor 91850 124125 11192 0 3 0x82 nanoslp syz-executor 70255 249940 11192 0 3 0x82 nanoslp syz-executor 11192 342456 974 0 3 0x82 kqread syz-executor 974 465763 63329 0 3 0x10008a sigsusp ksh 63329 118795 93046 0 3 0x98 kqread sshd-session 93046 65764 32239 0 3 0x92 kqread sshd-session 54897 65051 1 0 3 0x100083 ttyopn getty 32239 272386 1 0 3 0x88 kqread sshd 28369 381211 33659 74 3 0x1100092 bpf pflogd 33659 244289 1 0 3 0x80 sbwait pflogd 5137 215302 13423 73 3 0x1100090 kqread syslogd 13423 374477 1 0 3 0x100082 sbwait syslogd 86228 159229 1 0 3 0x100080 kqread resolvd 20830 113394 7058 77 3 0x100092 kqread dhcpleased 78797 350052 7058 77 3 0x100092 kqread dhcpleased 7058 519922 1 0 3 0x80 kqread dhcpleased 37771 28757 0 0 3 0x14200 bored smr 10325 482176 0 0 2 0x14200 zerothread 67810 456143 0 0 3 0x14200 aiodoned aiodoned 75489 124826 0 0 3 0x14200 syncer update 34748 367334 0 0 3 0x14200 cleaner cleaner 10907 235015 0 0 3 0x14200 reaper reaper 10129 119658 0 0 3 0x14200 pgdaemon pagedaemon 86839 149359 0 0 3 0x14200 bored viomb 73366 65995 0 0 3 0x40014200 acpi0 acpi0 83262 370324 0 0 3 0x40014200 idle1 97223 455207 0 0 3 0x14200 bored softnet1 68945 514481 0 0 3 0x14200 bored softnet0 5724 516926 0 0 3 0x14200 bored systqmp 72816 427526 0 0 3 0x14200 bored systq 67575 251989 0 0 3 0x14200 tmoslp softclockmp 30927 297592 0 0 3 0x40014200 tmoslp softclock 83552 355165 0 0 3 0x40014200 idle0 1 260479 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 90462 (syz-executor) thread 0xffff80003c402fb8 (504863) exclusive rwlock clonelk r = 0 (0xffffffff838519d8) #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 if_clone_destroy+0x93 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2159 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:775 #6 Xsyscall+0x128 Process 75591 (syz-executor) thread 0xffff80003c422fc0 (126783) exclusive rrwlock inode r = 0 (0xfffffd806f07f250) #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+0x242 sys/kern/sys_generic.c:380 #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:775 #9 Xsyscall+0x128 Process 51137 (syz-executor) thread 0xffff80003c4022c0 (124099) exclusive rrwlock inode r = 0 (0xfffffd805ee30210) #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+0x242 sys/kern/sys_generic.c:380 #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:775 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11080 12205K 12342K 166960K 12505 0 pcb 17 15K 16K 166960K 138 0 rtable 197 8K 9K 166960K 436 0 pf 38 18K 21K 166960K 90 0 ifaddr 37 6K 7K 166960K 68 0 ifgroup 51 2K 2K 166960K 98 0 sysctl 2 1K 9K 166960K 9 0 counters 68 36K 37K 166960K 106 0 ioctlops 0 0K 4K 166960K 1560 0 iov 0 0K 12K 166960K 19 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1405 88K 89K 166960K 1847 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 587 0 sigio 0 0K 0K 166960K 6 0 proc 72 115K 164K 166960K 588 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 46 0 in_multi 85 6K 7K 166960K 128 0 ether_multi 1 0K 0K 166960K 9 0 mrt 0 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 494 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 261 168K 182K 166960K 7198 0 UVM aobj 26 2K 2K 166960K 26 0 pinsyscall 42 84K 102K 166960K 1726 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 11 0K 2K 166960K 42 0 temp 53 8682K 8748K 166960K 23468 0 kqueue 13 20K 28K 166960K 116 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 120 142 0 138 3 0 3 3 0 8 2 rtentry 176 131 0 49 6 0 6 6 0 8 0 unpcb 144 427 0 410 4 0 4 4 0 8 3 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 153 0 148 4 3 1 4 0 8 0 arp 136 19 0 8 1 0 1 1 0 8 0 inpcb 328 617 0 605 13 3 10 13 0 8 8 nd6 152 28 0 4 1 0 1 1 0 8 0 pkpcb 40 7 0 7 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1192 12 0 12 1 0 1 1 0 8 1 pppxif 1504 3 0 3 1 0 1 1 0 8 1 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 2 0 2 1 1 0 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 5 0 1 1 0 1 1 0 8 0 pfstlim 224 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 448 2 0 1 1 0 1 1 0 8 0 pfrule 1360 5 0 3 1 0 1 1 0 8 0 rttmr 136 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 592 0 193 29 1 28 29 0 8 1 art_table 40 595 0 193 5 0 5 5 0 8 0 art_node 32 131 0 60 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 11 1 0 1 1 0 8 0 semapl 112 16 0 8 1 0 1 1 0 8 0 shmpl 112 23 0 0 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2550 0 1037 96 0 96 96 0 8 0 ffsino 296 2550 0 1037 118 0 118 118 0 8 0 nchpl 144 3388 0 1681 64 0 64 64 0 8 0 vnodes 216 2875 0 0 160 0 160 160 0 8 0 namei 1024 10767 0 10767 2 1 1 2 0 8 1 percpumem 16 68 0 19 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 50 0 26 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 17247 0 17247 9 7 2 8 1 8 2 plimitpl 152 89 0 70 1 0 1 1 0 8 0 sigapl 424 919 0 851 9 1 8 8 0 8 0 knotepl 120 520 0 0 16 0 16 16 0 8 0 kqueuepl 224 179 0 167 2 0 2 2 0 8 0 pipepl 344 161 0 132 3 0 3 3 0 8 0 fdescpl 528 882 0 851 3 0 3 3 0 8 0 filepl 160 4780 0 4545 16 0 16 16 0 8 6 lockfpl 104 175 0 172 1 0 1 1 0 8 0 lockfspl 48 81 0 78 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 781 0 765 1 0 1 1 0 8 0 zombiepl 144 854 0 851 1 0 1 1 0 8 0 processpl 1232 919 0 851 7 1 6 6 0 8 0 procpl 664 1659 0 1580 8 0 8 8 0 8 1 sosppl 176 8 0 8 1 1 0 1 0 8 0 sockpl 752 1203 0 1170 17 5 12 17 0 8 8 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 13 0 0 2 0 2 2 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 22 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 261 0 0 17 0 17 17 0 8 0 bufpl 280 6798 0 662 439 0 439 439 0 8 0 anonpl 32 7604 0 0 62 0 62 62 0 246 0 amapchunkpl 152 22851 0 22268 33 3 30 30 0 158 7 amappl16 200 3204 0 3091 20 8 12 15 0 8 6 amappl15 192 4 0 3 1 0 1 1 0 8 0 amappl14 184 19 0 19 2 2 0 1 0 8 0 amappl13 176 434 0 433 1 0 1 1 0 8 0 amappl12 168 1251 0 1209 3 0 3 3 0 8 0 amappl11 160 12 0 12 1 1 0 1 0 8 0 amappl10 152 51 0 37 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 27 0 25 1 0 1 1 0 8 0 amappl7 128 79 0 78 1 0 1 1 0 8 0 amappl6 120 281 0 267 1 0 1 1 0 8 0 amappl5 112 80 0 70 1 0 1 1 0 8 0 amappl4 104 427 0 397 1 0 1 1 0 8 0 amappl3 96 3899 0 3798 4 1 3 3 0 8 0 amappl2 88 1010 0 935 2 0 2 2 0 8 0 amappl1 80 11700 0 11105 15 1 14 15 0 8 0 amappl 88 6389 0 6206 5 0 5 5 0 92 0 uvmvnodes 80 113 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma4096 4096 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 128 254 0 254 2 2 0 1 0 8 0 dma64 64 7 0 7 2 1 1 1 0 8 1 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 25 0 0 1 0 1 1 0 8 0 uaddrrnd 24 882 0 851 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 882 0 851 1 0 1 1 0 8 0 vmmpekpl 168 8980 0 8938 3 0 3 3 0 8 0 vmmpepl 168 63388 0 61362 102 5 97 98 0 357 7 vmsppl 488 881 0 851 5 0 5 5 0 8 1 rwobjpl 80 20020 0 18853 28 1 27 27 0 8 0 pdppl 4096 1771 0 1702 99 28 71 83 0 8 2 pvpl 32 17648 0 0 143 0 143 143 0 265 0 pmappl 256 881 0 851 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 288 0 36 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001606000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c4234f0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4234f0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000367d42c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8068ad8798,81,fffffd80097fd618,ffff80003c4234f0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80648ffed8,ffff80003c4234f0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80648ffed8,ffff80003c4234f0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80648ffed8,ffff80003c4234f0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80648ffed8,ffff80003c4234f0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4234f0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4234f0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4234f0,ffff8000367d4630,ffff8000367d4580) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000367d4630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000367d4630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c9b2f29f7b0, count: -12 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 __mp_lock(ffffffff83922040) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83922040) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrsysret(ffff80002a2607e0,5b,0,ffff80002a39e6f0) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a2607e0,5b,0,ffff80002a39e6f0) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a39e7a0) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a39e7a0) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:796 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x738c7fe05050, count: 8 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 __mp_lock(ffffffff83922040) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83922040) at __mp_lock+0x192 sys/kern/kern_lock.c:173 ktrsysret(ffff80002a2607e0,5b,0,ffff80002a39e6f0) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline] ktrsysret(ffff80002a2607e0,5b,0,ffff80002a39e6f0) at ktrsysret+0xde sys/kern/kern_ktrace.c:209 syscall(ffff80002a39e7a0) at syscall+0xa50 mi_syscall_return sys/sys/syscall_mi.h:204 [inline] syscall(ffff80002a39e7a0) at syscall+0xa50 sys/arch/amd64/amd64/trap.c:796 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x738c7fe05050, count: -7