uvm_fault(0xfffffd806c02a020, 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(ffff800001484000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c4e2568) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4e2568) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000397f3150) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80607a5a20,81,fffffd80097fd750,ffff80003c4e2568) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8060cff9d0,ffff80003c4e2568) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8060cff9d0,ffff80003c4e2568) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8060cff9d0,ffff80003c4e2568) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8060cff9d0,ffff80003c4e2568) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4e2568) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4e2568,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4e2568,ffff8000397f34c0,ffff8000397f3410) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000397f34c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000397f34c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758533f48120, 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(0xfffffd806c02a020, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001484000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c4e2568) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4e2568) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000397f3150) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80607a5a20,81,fffffd80097fd750,ffff80003c4e2568) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8060cff9d0,ffff80003c4e2568) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8060cff9d0,ffff80003c4e2568) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8060cff9d0,ffff80003c4e2568) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8060cff9d0,ffff80003c4e2568) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4e2568) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4e2568,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4e2568,ffff8000397f34c0,ffff8000397f3410) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000397f34c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000397f34c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758533f48120, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000397f3080 rbx 0x1 rdx 0 rcx 0xffff80003c4e2568 rax 0xffffffff838087e0 dt_prov_syscall r8 0xffffffffffffffff r9 0 r10 0x3a8282d8f3956f96 r11 0x8ed07453c7fd59fa r12 0 r13 0 r14 0 r15 0xffff8000014f6400 rip 0xffffffff828687a8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff8000397f3050 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=59307 pid=11686 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4e2568 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4e3790,0xffff80003b01bcc0 process=0xffff80003c4e6b80 user=0xffff8000397ee000, vmspace=0xfffffd806c02a020 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 64775 22977 85245 0 2 0 syz-executor 64775 217691 85245 0 2 0x4000000 syz-executor 33575 245199 9105 0 2 0 syz-executor 33575 504738 9105 0 3 0x4000080 fsleep syz-executor 33575 7904 9105 0 3 0x4000080 fsleep syz-executor 2175 174878 63598 0 2 0 syz-executor 2175 357821 63598 0 3 0x4000080 fsleep syz-executor 2175 456256 63598 0 2 0x4000000 syz-executor 55781 350879 78558 0 3 0x80 nanoslp syz-executor 55781 491459 78558 0 3 0x4000080 kqsel syz-executor 55781 60193 78558 0 3 0x4000080 fsleep syz-executor 80671 310526 96729 0 3 0x80 nanoslp syz-executor 80671 164582 96729 0 3 0x4000080 kqsel syz-executor 80671 67934 96729 0 3 0x4000080 kqsel syz-executor 80671 405347 96729 0 3 0x4000080 fsleep syz-executor 71014 174077 99866 0 3 0x80 nanoslp syz-executor 71014 6173 99866 0 3 0x4000080 kqsel syz-executor 41155 52655 0 0 3 0x14200 acct acct 26870 129394 0 0 3 0x14280 nfsidl nfsio 55931 38934 0 0 3 0x14280 nfsidl nfsio 87017 447685 0 0 3 0x14280 nfsidl nfsio 83022 135709 0 0 3 0x14280 nfsidl nfsio 40985 305714 0 0 3 0x14280 nfsidl nfsio 64354 186796 0 0 3 0x14280 nfsidl nfsio 35436 407191 0 0 3 0x14280 nfsidl nfsio 96616 8852 0 0 3 0x14280 nfsidl nfsio 80366 275155 0 0 3 0x14280 nfsidl nfsio 49914 208559 0 0 3 0x14280 nfsidl nfsio 12498 336167 0 0 3 0x14280 nfsidl nfsio 89536 205032 0 0 3 0x14280 nfsidl nfsio 98144 76070 0 0 3 0x14280 nfsidl nfsio 23886 115696 0 0 3 0x14280 nfsidl nfsio 2810 258594 0 0 3 0x14280 nfsidl nfsio 73933 300384 0 0 3 0x14280 nfsidl nfsio 58607 131177 0 0 3 0x14280 nfsidl nfsio 20023 251955 0 0 3 0x14280 nfsidl nfsio 99866 457706 71021 0 3 0x82 nanoslp syz-executor 9105 423317 71021 0 3 0x82 nanoslp syz-executor 78558 80916 71021 0 3 0x82 nanoslp syz-executor 96729 155223 71021 0 3 0x82 nanoslp syz-executor 85245 522849 71021 0 3 0x82 nanoslp syz-executor 71718 252444 71021 0 3 0x82 nanoslp syz-executor 63598 270116 71021 0 3 0x82 nanoslp syz-executor 93265 31278 71021 0 3 0x82 wait syz-executor 71021 501909 13838 0 3 0x82 kqread syz-executor 13838 121482 99152 0 3 0x10008a sigsusp ksh 99152 252546 1311 0 3 0x98 kqread sshd-session 1311 77084 1444 0 3 0x92 kqread sshd-session 41882 19347 1 0 3 0x100083 ttyin getty 1444 422177 1 0 3 0x88 kqread sshd 4839 250102 19221 74 3 0x1100092 bpf pflogd 19221 34794 1 0 3 0x80 sbwait pflogd 56310 346969 21177 73 3 0x1100090 kqread syslogd 21177 95955 1 0 3 0x100082 sbwait syslogd 75262 139196 1 0 3 0x100080 kqread resolvd 42937 401348 58665 77 3 0x100092 kqread dhcpleased 92236 344819 58665 77 3 0x100092 kqread dhcpleased 58665 17807 1 0 3 0x80 kqread dhcpleased 83638 430059 0 0 3 0x14200 bored smr 30121 198320 0 0 2 0x14200 zerothread 80869 9207 0 0 3 0x14200 aiodoned aiodoned 7714 385802 0 0 3 0x14200 syncer update 54136 63659 0 0 3 0x14200 cleaner cleaner 89528 138869 0 0 3 0x14200 reaper reaper 94011 423033 0 0 3 0x14200 pgdaemon pagedaemon 48368 324879 0 0 3 0x14200 bored viomb 78662 39404 0 0 3 0x40014200 acpi0 acpi0 6489 339709 0 0 7 0x40014200 idle1 63684 173369 0 0 3 0x14200 bored softnet1 49918 171315 0 0 3 0x14200 bored softnet0 27322 189627 0 0 3 0x14200 bored systqmp 75161 180702 0 0 3 0x14200 bored systq 78764 38805 0 0 3 0x14200 tmoslp softclockmp 73980 245056 0 0 3 0x40014200 tmoslp softclock 8012 140340 0 0 3 0x40014200 idle0 1 485417 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10215 11084K 11356K 166960K 12016 0 pcb 18 13K 13K 166960K 88 0 rtable 236 10K 11K 166960K 554 0 pf 34 17K 18K 166960K 77 0 ifaddr 42 7K 7K 166960K 63 0 ifgroup 55 2K 2K 166960K 91 0 sysctl 4 1K 9K 166960K 8 0 counters 68 36K 38K 166960K 124 0 ioctlops 0 0K 4K 166960K 1639 0 iov 0 0K 8K 166960K 44 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1383 87K 87K 166960K 1765 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 16 3K 3K 166960K 21 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 518 0 sigio 0 0K 0K 166960K 11 0 proc 73 115K 147K 166960K 550 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 3 0K 0K 166960K 54 0 in_multi 96 7K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 9 0 mrt 1 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 436 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 259 160K 173K 166960K 6451 0 UVM aobj 16 8K 8K 166960K 17 0 pinsyscall 43 86K 102K 166960K 1629 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 28 0 NDP 12 0K 2K 166960K 42 0 temp 53 8661K 8725K 166960K 26072 0 kqueue 14 22K 29K 166960K 97 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 120 192 0 188 3 0 3 3 0 8 2 rtentry 176 122 0 24 5 0 5 5 0 8 0 unpcb 144 260 0 235 4 0 4 4 0 8 3 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 165 0 158 7 0 7 7 0 8 6 arp 136 20 0 4 1 0 1 1 0 8 0 inpcb 328 501 0 489 7 0 7 7 0 8 5 nd6 152 25 0 0 1 0 1 1 0 8 0 pkpcb 40 4 0 3 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 25 0 25 1 0 1 1 0 8 1 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pffrag 232 8 0 0 1 0 1 1 0 482 0 pffrnode 88 6 0 0 1 0 1 1 0 8 0 pffrent 40 10 0 2 1 0 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 pfstitem 24 48 0 2 1 0 1 1 0 8 0 pfstkey 128 48 0 2 2 0 2 2 0 8 0 pfstate 448 48 0 2 6 0 6 6 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 499 0 86 29 0 29 29 0 8 1 art_table 40 502 0 86 5 0 5 5 0 8 0 art_node 32 122 0 34 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 16 0 2 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2229 0 720 96 0 96 96 0 8 0 ffsino 296 2229 0 720 117 0 117 117 0 8 0 nchpl 144 2946 0 1241 64 0 64 64 0 8 0 rtmask 32 9 0 9 1 0 1 1 0 8 1 vnodes 216 2595 0 0 145 0 145 145 0 8 0 namei 1024 9282 0 9282 2 1 1 2 0 8 1 percpumem 16 77 0 28 1 0 1 1 0 8 0 vcpupl 3968 3 0 0 1 0 1 1 0 8 0 vmpool 840 3 0 0 1 0 1 1 0 8 0 kstatmem 264 54 0 28 4 1 3 3 0 8 1 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 14864 0 14864 9 7 2 8 1 8 2 plimitpl 152 153 0 136 1 0 1 1 0 8 0 sigapl 424 832 0 765 9 1 8 8 0 8 0 knotepl 120 356 0 0 11 0 11 11 0 8 0 kqueuepl 224 313 0 298 5 0 5 5 0 8 4 pipepl 344 212 0 183 8 2 6 6 0 8 3 fdescpl 528 797 0 765 3 0 3 3 0 8 0 filepl 160 4334 0 4091 15 0 15 15 0 8 4 lockfpl 104 204 0 201 2 0 2 2 0 8 1 lockfspl 48 92 0 89 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 37 0 20 1 0 1 1 0 8 0 ucredpl 104 434 0 421 1 0 1 1 0 8 0 zombiepl 144 767 0 765 1 0 1 1 0 8 0 processpl 1232 832 0 765 7 1 6 6 0 8 0 procpl 664 1424 0 1346 8 0 8 8 0 8 0 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 752 960 0 918 11 0 11 11 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 131 0 0 17 0 17 17 0 8 0 mcl2k 2048 24 0 0 3 0 3 3 0 8 0 mtagpl 96 28 0 0 1 0 1 1 0 8 0 mbufpl 256 1829 0 0 115 0 115 115 0 8 0 bufpl 280 5804 0 131 406 0 406 406 0 8 0 anonpl 32 9676 0 0 79 0 79 79 0 246 0 amapchunkpl 152 20508 0 19963 31 0 31 31 0 158 9 amappl16 200 2564 0 2528 19 4 15 15 0 8 8 amappl15 192 24 0 23 1 0 1 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 431 0 430 1 0 1 1 0 8 0 amappl12 168 1154 0 1111 3 0 3 3 0 8 0 amappl11 160 18 0 18 1 1 0 1 0 8 0 amappl10 152 47 0 33 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 171 0 170 1 0 1 1 0 8 0 amappl6 120 272 0 258 1 0 1 1 0 8 0 amappl5 112 75 0 65 1 0 1 1 0 8 0 amappl4 104 407 0 376 1 0 1 1 0 8 0 amappl3 96 3508 0 3407 3 0 3 3 0 8 0 amappl2 88 905 0 828 2 0 2 2 0 8 0 amappl1 80 10549 0 9942 14 1 13 14 0 8 0 amappl 88 5675 0 5493 5 0 5 5 0 92 0 uvmvnodes 80 118 0 0 3 0 3 3 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 128 253 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 16 0 1 1 0 1 1 0 8 0 uaddrrnd 24 797 0 765 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 797 0 765 1 0 1 1 0 8 0 vmmpekpl 168 8266 0 8225 2 0 2 2 0 8 0 vmmpepl 168 57010 0 55012 99 0 99 99 0 357 7 vmsppl 488 796 0 765 5 1 4 5 0 8 0 rwobjpl 80 17880 0 16787 28 0 28 28 0 8 0 pdppl 4096 1607 0 1533 101 26 75 83 0 8 1 pvpl 32 16986 0 0 137 0 137 137 0 265 0 pmappl 256 799 0 765 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 392 0 30 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001484000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c4e2568) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c4e2568) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000397f3150) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80607a5a20,81,fffffd80097fd750,ffff80003c4e2568) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8060cff9d0,ffff80003c4e2568) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8060cff9d0,ffff80003c4e2568) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8060cff9d0,ffff80003c4e2568) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8060cff9d0,ffff80003c4e2568) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c4e2568) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c4e2568,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c4e2568,ffff8000397f34c0,ffff8000397f3410) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000397f34c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000397f34c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x758533f48120, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) 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(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299edff0) 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(ffff8000299edff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5