uvm_fault(0xfffffd806cb1cd00, 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(ffff8000015fe800) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000338df440) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806a70f0e0,1,fffffd8007ffd820,ffff80003c8f2a88) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd806a7dc270,ffff80003c8f2a88) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806a7dc270,ffff80003c8f2a88) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8f2a88) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8f2a88,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8f2a88,ffff8000338df7a0,ffff8000338df6f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000338df7a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338df7a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b35531d9f0, 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(0xfffffd806cb1cd00, 0x0, 0, 1) -> e ddb> trace dt_ioctl_record_stop(ffff8000015fe800) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000338df440) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806a70f0e0,1,fffffd8007ffd820,ffff80003c8f2a88) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd806a7dc270,ffff80003c8f2a88) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806a7dc270,ffff80003c8f2a88) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8f2a88) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8f2a88,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8f2a88,ffff8000338df7a0,ffff8000338df6f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000338df7a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338df7a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b35531d9f0, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff8000338df370 rbx 0x1 rdx 0 rcx 0xffff80003c8f2a88 rax 0xffffffff83877ec0 dt_prov_static r8 0xffffffffffffffff r9 0 r10 0x7b3180473b1da5fe r11 0x9879b6a66c086b26 r12 0 r13 0 r14 0 r15 0xffff80000159cf00 rip 0xffffffff819633c8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff8000338df340 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb> show proc PROC (syz-executor) tid=450219 pid=38061 tcnt=0 stat=onproc flags process=1018 proc=2000 runpri=77, usrpri=77, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c8f2a88 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a746008,0xffff80003c8f2800 process=0xffff8000314c8d98 user=0xffff8000338da000, vmspace=0xfffffd806cb1cd00 estcpu=27, cpticks=12, pctcpu=0.2, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 36588 125928 78867 0 2 0 syz-executor 36588 195198 78867 0 3 0x4000080 fsleep syz-executor 48094 283435 28855 0 2 0 syz-executor 48094 496680 28855 0 3 0x4000080 fsleep syz-executor 1825 56515 72568 0 2 0 syz-executor 1825 197326 72568 0 3 0x4000080 fsleep syz-executor 59105 280863 66519 0 2 0 syz-executor 59105 229041 66519 0 3 0x4000080 fsleep syz-executor 35710 297844 8850 0 2 0 syz-executor 35710 152262 8850 0 3 0x4000080 fsleep syz-executor 84154 104279 13710 0 2 0 syz-executor 84154 214356 13710 0 3 0x4000080 fsleep syz-executor 93861 336416 35919 0 2 0x10 syz-executor 93861 268290 35919 0 2 0x4000010 syz-executor 93861 446504 35919 0 3 0x4000090 fsleep syz-executor 93861 369975 35919 0 3 0x4000090 fsleep syz-executor 28855 507601 21785 0 3 0x82 nanoslp syz-executor 15417 270437 21785 0 3 0x82 nanoslp syz-executor 78867 68265 21785 0 3 0x82 nanoslp syz-executor 35919 272460 21785 0 3 0x82 nanoslp syz-executor 66519 260377 21785 0 3 0x82 nanoslp syz-executor 8850 158314 21785 0 3 0x82 nanoslp syz-executor 72568 303925 21785 0 3 0x82 nanoslp syz-executor 13710 214233 21785 0 3 0x82 nanoslp syz-executor 21785 163993 35192 0 3 0x82 kqread syz-executor 35192 18261 8823 0 3 0x10008a sigsusp ksh 8823 181754 48882 0 3 0x98 kqread sshd-session 48882 311062 44118 0 3 0x92 kqread sshd-session 502 252329 1 0 3 0x100083 ttyin getty 44118 182887 1 0 3 0x88 kqread sshd 47956 51158 5546 73 3 0x1100090 kqread syslogd 5546 193417 1 0 3 0x100082 sbwait syslogd 71766 488371 1 0 3 0x100080 kqread resolvd 87942 179178 54742 77 3 0x100092 kqread dhcpleased 29791 392341 54742 77 3 0x100092 kqread dhcpleased 54742 379780 1 0 3 0x80 kqread dhcpleased 88679 282494 0 0 3 0x14200 bored smr 48073 398886 0 0 2 0x14200 zerothread 72654 453601 0 0 3 0x14200 aiodoned aiodoned 70451 123309 0 0 3 0x14200 syncer update 41664 83812 0 0 3 0x14200 cleaner cleaner 4178 117077 0 0 3 0x14200 reaper reaper 66573 281104 0 0 3 0x14200 pgdaemon pagedaemon 6284 43918 0 0 3 0x14200 bored viomb 85372 327054 0 0 3 0x40014200 acpi0 acpi0 73606 465113 0 0 3 0x14200 bored softnet0 61981 319568 0 0 3 0x14200 bored systqmp 93934 301670 0 0 3 0x14200 bored systq 97890 492346 0 0 3 0x40014200 tmoslp softclock 73670 249892 0 0 3 0x40014200 idle0 1 418759 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 11041 12141K 12710K 166960K 12476 0 pcb 86 16K 16K 166960K 191 0 rtable 208 6K 8K 166960K 389 0 pf 27 12K 18K 166960K 47 0 ifaddr 34 6K 7K 166960K 47 0 ifgroup 42 1K 2K 166960K 62 0 sysctl 2 1K 9K 166960K 7 0 counters 31 17K 17K 166960K 36 0 ioctlops 0 0K 4K 166960K 128 0 iov 0 0K 16K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1358 85K 86K 166960K 1616 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 15 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 324 0 sigio 0 0K 0K 166960K 24 0 proc 61 59K 83K 166960K 512 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 28 0 in_multi 77 5K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 381 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 233 160K 176K 166960K 4613 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 39 78K 92K 166960K 1425 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 9 0K 1K 166960K 30 0 temp 40 9063K 9128K 166960K 16813 0 kqueue 16 24K 28K 166960K 71 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 49 0 46 1 0 1 1 0 8 0 rtentry 136 114 0 25 4 0 4 4 0 8 0 unpcb 144 236 0 219 6 2 4 4 0 8 3 syncache 336 7 0 7 2 1 1 1 0 8 1 tcpcb 736 50 0 46 1 0 1 1 0 8 0 arp 96 18 0 4 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 315 0 241 8 1 7 7 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 25 0 7 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 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 pfrule 1360 2 0 1 2 1 1 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 455 0 90 29 0 29 29 0 8 4 art_table 40 457 0 90 5 0 5 5 0 8 0 art_node 32 114 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 10 0 1 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1880 0 426 92 0 92 92 0 8 0 ffsino 256 1880 0 426 92 0 92 92 0 8 0 nchpl 144 2329 0 636 63 0 63 63 0 8 0 vnodes 216 2160 0 0 120 0 120 120 0 8 0 namei 1024 6989 0 6989 3 2 1 2 0 8 1 kstatmem 264 29 0 10 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 7794 0 7794 10 2 8 8 1 8 8 plimitpl 152 46 0 30 1 0 1 1 0 8 0 sigapl 424 618 0 575 7 1 6 6 0 8 1 knotepl 120 10252 0 10197 10 0 10 10 0 8 8 kqueuepl 184 81 0 70 1 0 1 1 0 8 0 pipepl 304 202 0 175 8 0 8 8 0 8 5 fdescpl 448 605 0 575 5 1 4 5 0 8 0 filepl 120 2864 0 2578 13 2 11 11 0 8 2 lockfpl 104 147 0 145 1 0 1 1 0 8 0 lockfspl 48 72 0 70 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 38 0 22 1 0 1 1 0 8 0 ucredpl 104 250 0 235 1 0 1 1 0 8 0 zombiepl 144 692 0 691 2 1 1 1 0 8 0 processpl 1152 618 0 575 4 0 4 4 0 8 0 procpl 664 967 0 915 6 0 6 6 0 8 1 sosppl 176 1 0 1 1 1 0 1 0 8 0 sockpl 552 609 0 513 17 7 10 13 0 8 3 mcl64k 65536 11 0 11 2 1 1 1 0 8 1 mcl9k128 9344 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 5 0 5 1 1 0 1 0 8 0 mcl4k 4096 2763 0 2709 14 6 8 14 0 8 0 mcl2k 2048 280 0 278 3 2 1 2 0 8 0 mtagpl 96 8 0 5 2 1 1 1 0 8 0 mbufpl 256 7047 0 6874 76 56 20 75 0 8 8 bufpl 280 2597 0 102 179 0 179 179 0 8 0 anonpl 24 118581 0 114833 44 11 33 33 0 187 10 amapchunkpl 152 14177 0 13545 28 3 25 25 0 158 0 amappl16 200 2029 0 2004 5 3 2 5 0 8 0 amappl15 192 5 0 5 2 1 1 1 0 8 1 amappl14 184 475 0 474 1 0 1 1 0 8 0 amappl13 176 118 0 108 1 0 1 1 0 8 0 amappl12 168 839 0 810 2 0 2 2 0 8 0 amappl11 160 6 0 5 1 0 1 1 0 8 0 amappl10 152 62 0 52 1 0 1 1 0 8 0 amappl9 144 256 0 256 1 1 0 1 0 8 0 amappl8 136 107 0 105 1 0 1 1 0 8 0 amappl7 128 164 0 152 1 0 1 1 0 8 0 amappl6 120 153 0 151 1 0 1 1 0 8 0 amappl5 112 126 0 119 1 0 1 1 0 8 0 amappl4 104 277 0 261 1 0 1 1 0 8 0 amappl3 96 2711 0 2594 4 0 4 4 0 8 0 amappl2 88 542 0 487 2 0 2 2 0 8 0 amappl1 80 10677 0 10123 17 1 16 16 0 8 3 amappl 88 3887 0 3717 5 0 5 5 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 0 8 0 dma65536 65536 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 7 0 7 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 605 0 575 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 605 0 575 1 0 1 1 0 8 0 vmmpekpl 168 7121 0 7088 2 0 2 2 0 8 0 vmmpepl 168 47366 0 45526 92 0 92 92 0 357 10 vmsppl 368 604 0 575 4 1 3 4 0 8 0 rwobjpl 40 16409 0 15439 12 0 12 12 0 8 2 pdppl 4096 1216 0 1150 96 30 66 78 0 8 0 pvpl 32 292326 0 282606 115 18 97 98 0 265 17 pmappl 216 604 0 575 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 431 0 105 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace dt_ioctl_record_stop(ffff8000015fe800) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000338df440) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806a70f0e0,1,fffffd8007ffd820,ffff80003c8f2a88) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd806a7dc270,ffff80003c8f2a88) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806a7dc270,ffff80003c8f2a88) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8f2a88) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8f2a88,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8f2a88,ffff8000338df7a0,ffff8000338df6f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000338df7a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338df7a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b35531d9f0, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace dt_ioctl_record_stop(ffff8000015fe800) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003c8f2a88) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000338df440) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806a70f0e0,1,fffffd8007ffd820,ffff80003c8f2a88) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd806a7dc270,ffff80003c8f2a88) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621 fdrop(fffffd806a7dc270,ffff80003c8f2a88) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd806a7dc270,ffff80003c8f2a88) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8f2a88) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8f2a88,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8f2a88,ffff8000338df7a0,ffff8000338df6f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000338df7a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000338df7a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b35531d9f0, count: -12