uvm_fault(0xfffffd807eaae468, 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 dt_ioctl_record_stop(ffff80000161d480) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003acf5220) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b97e470,1,fffffd8007ffd7b8,ffff80002a78ca80) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8079632720,ffff80002a78ca80) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8079632720,ffff80002a78ca80) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002a78ca80) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002a78ca80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a78ca80,ffff80003acf5580,ffff80003acf54d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003acf5580) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003acf5580) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2aa841b250, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd807eaae468, 0x0, 0, 1) -> e ddb> trace dt_ioctl_record_stop(ffff80000161d480) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003acf5220) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b97e470,1,fffffd8007ffd7b8,ffff80002a78ca80) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8079632720,ffff80002a78ca80) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8079632720,ffff80002a78ca80) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002a78ca80) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002a78ca80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a78ca80,ffff80003acf5580,ffff80003acf54d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003acf5580) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003acf5580) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2aa841b250, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003acf5150 rbx 0x1 rdx 0 rcx 0xffff80002a78ca80 rax 0xffffffff8382f598 dt_prov_syscall r8 0x7f7fffffc000 r9 0 r10 0x521bbe42770dbcd2 r11 0xfa380c67db7ae4f8 r12 0 r13 0 r14 0 r15 0xffff800001707100 rip 0xffffffff82efc1c8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003acf5120 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb> show proc PROC (syz-executor) tid=67012 pid=13030 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a78ca80 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a78cfb0,0xffff80002a78c560 process=0xffff8000ffff9218 user=0xffff80003acf0000, vmspace=0xfffffd807eaae468 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34673 361932 14080 0 2 0 syz-executor 34673 479458 14080 0 3 0x4000080 fsleep syz-executor 34673 497961 14080 0 3 0x4000080 fsleep syz-executor 21329 173402 46492 0 2 0 syz-executor 21329 23916 46492 0 3 0x4000080 fsleep syz-executor 1726 389995 23379 0 2 0 syz-executor 1726 250826 23379 0 3 0x4000080 fsleep syz-executor 11639 395950 51301 0 2 0 syz-executor 11639 338162 51301 0 3 0x4000080 fsleep syz-executor 98534 191575 34551 0 2 0 syz-executor 98534 182639 34551 0 3 0x4000080 fsleep syz-executor 71534 133494 0 0 3 0x14200 acct acct 69560 491333 1 0 3 0x100083 ttyopn getty 68443 215610 12447 0 2 0x10000082 syz-executor 51301 72462 12447 0 3 0x82 nanoslp syz-executor 23379 33313 12447 0 3 0x82 nanoslp syz-executor 14080 364492 12447 0 2 0xc82 syz-executor 34551 244483 12447 0 3 0x82 nanoslp syz-executor 15219 440961 12447 0 3 0x82 wait syz-executor 60318 68127 12447 0 3 0x82 nanoslp syz-executor 46492 275528 12447 0 3 0x82 nanoslp syz-executor 12447 208973 26744 0 3 0x82 kqread syz-executor 26744 223875 49056 0 3 0x10008a sigsusp ksh 49056 486898 25302 0 3 0x98 kqread sshd-session 25302 131259 94119 0 3 0x92 kqread sshd-session 94119 115506 1 0 3 0x88 kqread sshd 22671 489606 10551 73 3 0x1100090 kqread syslogd 10551 197350 1 0 3 0x100082 sbwait syslogd 44934 524238 1 0 3 0x100080 kqread resolvd 35590 130182 99632 77 3 0x100092 kqread dhcpleased 21476 341046 99632 77 3 0x100092 kqread dhcpleased 99632 396537 1 0 3 0x80 kqread dhcpleased 57098 242274 0 0 3 0x14200 bored smr 25220 187867 0 0 2 0x14200 zerothread 5308 139245 0 0 3 0x14200 aiodoned aiodoned 64443 339767 0 0 3 0x14200 syncer update 57870 491219 0 0 3 0x14200 cleaner cleaner 43072 174122 0 0 3 0x14200 reaper reaper 32317 406444 0 0 3 0x14200 pgdaemon pagedaemon 27465 321392 0 0 3 0x14200 bored viomb 98116 62790 0 0 3 0x40014200 acpi0 acpi0 56715 122749 0 0 3 0x14200 bored softnet0 50821 268718 0 0 3 0x14200 bored systqmp 56907 77708 0 0 3 0x14200 bored systq 45957 461996 0 0 3 0x40014200 tmoslp softclock 8941 378890 0 0 3 0x40014200 idle0 1 319045 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11059 12204K 12746K 166960K 12818 0 pcb 26 13K 14K 166960K 148 0 rtable 215 8K 8K 166960K 427 0 pf 34 13K 14K 166960K 68 0 ifaddr 40 6K 7K 166960K 64 0 ifgroup 54 2K 2K 166960K 94 0 sysctl 3 1K 9K 166960K 9 0 counters 34 17K 18K 166960K 60 0 ioctlops 0 0K 4K 166960K 98 0 iov 0 0K 12K 166960K 8 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1389 87K 87K 166960K 1738 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 12 0K 0K 166960K 17 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 175K 240K 166960K 449 0 sigio 0 0K 0K 166960K 10 0 proc 61 59K 83K 166960K 538 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 82 0 in_multi 87 6K 7K 166960K 112 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 12 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 538 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 228 151K 168K 166960K 5541 0 UVM aobj 15 6K 6K 166960K 15 0 pinsyscall 38 76K 92K 166960K 1521 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 11 0 NDP 12 0K 2K 166960K 41 0 temp 48 9065K 9161K 166960K 28933 0 kqueue 15 24K 34K 166960K 89 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 64 0 61 1 0 1 1 0 8 0 rtentry 136 124 0 35 4 0 4 4 0 8 0 unpcb 144 198 0 181 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 146 0 142 7 0 7 7 0 8 6 arp 96 19 0 3 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 5 0 1 1 0 1 1 0 8 0 inpcb 328 343 0 327 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 112 27 0 4 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 22 0 22 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 516 0 120 31 0 31 31 0 8 3 art_table 40 518 0 120 5 0 5 5 0 8 0 art_node 32 123 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 13 1 0 1 1 0 8 0 semupl 112 3 0 3 1 0 1 1 0 8 1 semapl 112 15 0 5 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2159 0 698 92 0 92 92 0 8 0 ffsino 256 2159 0 698 92 0 92 92 0 8 0 nchpl 144 2757 0 1057 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 2487 0 0 139 0 139 139 0 8 0 namei 1024 9420 0 9420 2 0 2 2 0 8 2 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 808 2 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 0 1 1 0 8 1 scxspl 216 11019 0 11019 3 0 3 3 1 8 3 plimitpl 152 166 0 148 1 0 1 1 0 8 0 sigapl 424 728 0 684 6 0 6 6 0 8 1 knotepl 120 176403 0 176126 10 0 10 10 0 8 1 kqueuepl 184 118 0 107 1 0 1 1 0 8 0 pipepl 304 202 0 175 8 0 8 8 0 8 5 fdescpl 448 714 0 685 5 0 5 5 0 8 1 filepl 120 3893 0 3669 11 0 11 11 0 8 2 lockfpl 104 135 0 131 1 0 1 1 0 8 0 lockfspl 48 60 0 56 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 394 0 381 1 0 1 1 0 8 0 zombiepl 144 687 0 684 1 0 1 1 0 8 0 processpl 1152 728 0 684 4 0 4 4 0 8 0 procpl 664 1199 0 1149 6 0 6 6 0 8 1 sockpl 552 728 0 692 8 0 8 8 0 8 5 mcl64k 65536 22 0 21 1 0 1 1 0 8 0 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 2877 0 2823 15 0 15 15 0 8 7 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 418 0 416 1 0 1 1 0 8 0 mtagpl 96 17 0 4 1 0 1 1 0 8 0 mbufpl 256 7948 0 7788 12 0 12 12 0 8 0 bufpl 280 4083 0 110 284 0 284 284 0 8 0 anonpl 24 137632 0 131170 68 0 68 68 0 187 10 amapchunkpl 152 17597 0 17052 38 0 38 38 0 158 15 amappl16 200 2721 0 2557 22 0 22 22 0 8 4 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 410 0 409 1 0 1 1 0 8 0 amappl13 176 112 0 102 1 0 1 1 0 8 0 amappl12 168 953 0 925 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 0 1 1 0 8 1 amappl10 152 76 0 66 1 0 1 1 0 8 0 amappl9 144 278 0 278 1 0 1 1 0 8 1 amappl8 136 105 0 103 1 0 1 1 0 8 0 amappl7 128 142 0 131 1 0 1 1 0 8 0 amappl6 120 157 0 155 1 0 1 1 0 8 0 amappl5 112 175 0 168 1 0 1 1 0 8 0 amappl4 104 283 0 267 1 0 1 1 0 8 0 amappl3 96 3344 0 3236 4 0 4 4 0 8 1 amappl2 88 497 0 445 2 0 2 2 0 8 0 amappl1 80 10204 0 9653 13 0 13 13 0 8 1 amappl 88 4806 0 4640 5 0 5 5 0 92 0 uvmvnodes 80 103 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 714 0 685 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 714 0 685 1 0 1 1 0 8 0 vmmpekpl 168 7376 0 7341 2 0 2 2 0 8 0 vmmpepl 168 52719 0 50796 100 0 100 100 0 357 8 vmsppl 368 713 0 685 4 0 4 4 0 8 1 rwobjpl 40 17126 0 16022 15 0 15 15 0 8 0 pdppl 4096 1438 0 1372 94 26 68 78 0 8 2 pvpl 32 342638 0 330948 150 0 150 150 0 265 24 pmappl 216 715 0 685 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 367 0 26 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace dt_ioctl_record_stop(ffff80000161d480) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003acf5220) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b97e470,1,fffffd8007ffd7b8,ffff80002a78ca80) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8079632720,ffff80002a78ca80) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8079632720,ffff80002a78ca80) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002a78ca80) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002a78ca80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a78ca80,ffff80003acf5580,ffff80003acf54d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003acf5580) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003acf5580) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2aa841b250, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace dt_ioctl_record_stop(ffff80000161d480) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a78ca80) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003acf5220) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806b97e470,1,fffffd8007ffd7b8,ffff80002a78ca80) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8079632720,ffff80002a78ca80) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8079632720,ffff80002a78ca80) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8079632720,ffff80002a78ca80) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80002a78ca80) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80002a78ca80,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a78ca80,ffff80003acf5580,ffff80003acf54d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003acf5580) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003acf5580) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a2aa841b250, count: -12