login: uvm_fault(0xfffffd806c21e470, 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(ffff800001491980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9e75c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066e137a8,81,fffffd8007bfb4e0,ffff8000315034f8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8078c4c9e0,ffff8000315034f8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8078c4c9e0,ffff8000315034f8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff8000315034f8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff8000315034f8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000315034f8,ffff80003c9e7920,ffff80003c9e7870) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e7920) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e7920) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7316bb3a9a90, 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(0xfffffd806c21e470, 0x0, 0, 1) -> e ddb> trace dt_ioctl_record_stop(ffff800001491980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9e75c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066e137a8,81,fffffd8007bfb4e0,ffff8000315034f8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8078c4c9e0,ffff8000315034f8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8078c4c9e0,ffff8000315034f8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff8000315034f8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff8000315034f8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000315034f8,ffff80003c9e7920,ffff80003c9e7870) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e7920) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e7920) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7316bb3a9a90, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c9e74f0 rbx 0x1 rdx 0 rcx 0xffff8000315034f8 rax 0xffffffff83831b68 dt_prov_syscall r8 0 r9 0 r10 0xf42772a7cdc4423d r11 0xcf18b263517270cc r12 0 r13 0 r14 0 r15 0xffff8000014af900 rip 0xffffffff815d4068 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c9e74c0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb> show proc PROC (syz-executor) tid=305388 pid=75674 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000315034f8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a85e558,0xffff80002a7cdcb0 process=0xffff8000ffff56a0 user=0xffff80003c9e2000, vmspace=0xfffffd806c21e470 estcpu=34, cpticks=4, pctcpu=0.1, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 66987 179685 3381 0 2 0 syz-executor 66987 164162 3381 0 3 0x4000080 fsleep syz-executor 25386 490279 72107 0 2 0 syz-executor 25881 517569 44221 0 2 0 syz-executor 34587 320484 47613 0 2 0 syz-executor 90945 332424 60378 0 2 0x100002 sh 73313 264817 0 0 3 0x14200 acct acct 60378 28187 87001 0 3 0x82 wait syz-executor 29493 138761 1 0 3 0x100083 ttyin getty 81904 257386 87001 0 2 0x3 syz-executor 47613 344937 87001 0 2 0x3 syz-executor 89850 327379 0 0 3 0x14280 nfsidl nfsio 90920 492736 0 0 3 0x14280 nfsidl nfsio 9204 518500 0 0 3 0x14280 nfsidl nfsio 7975 127219 0 0 3 0x14280 nfsidl nfsio 44981 239385 0 0 3 0x14280 nfsidl nfsio 22990 97826 0 0 3 0x14280 nfsidl nfsio 70516 232395 0 0 3 0x14280 nfsidl nfsio 39625 465319 0 0 3 0x14280 nfsidl nfsio 79372 116088 0 0 3 0x14280 nfsidl nfsio 89353 301506 0 0 3 0x14280 nfsidl nfsio 43994 131210 0 0 3 0x14280 nfsidl nfsio 76476 283769 0 0 3 0x14280 nfsidl nfsio 91401 516035 0 0 3 0x14280 nfsidl nfsio 24102 335554 0 0 3 0x14280 nfsidl nfsio 42316 378019 0 0 3 0x14280 nfsidl nfsio 66265 435914 0 0 3 0x14280 nfsidl nfsio 77302 472544 0 0 3 0x14280 nfsidl nfsio 70518 11222 0 0 3 0x14280 nfsidl nfsio 45484 287310 0 0 3 0x14280 nfsidl nfsio 30485 106496 0 0 3 0x14280 nfsidl nfsio 57912 376442 87001 0 2 0x2 syz-executor 54687 46453 0 0 3 0x14200 bored sosplice 44221 194280 87001 0 2 0x3 syz-executor 6480 159083 87001 0 2 0x2 syz-executor 72107 77235 87001 0 2 0x3 syz-executor 3381 467693 87001 0 3 0x82 nanoslp syz-executor 87001 406114 87983 0 3 0x82 kqread syz-executor 87983 312357 78629 0 3 0x10008a sigsusp ksh 78629 296677 50637 0 3 0x98 kqread sshd-session 50637 206857 6574 0 3 0x92 kqread sshd-session 6574 54274 1 0 3 0x88 kqread sshd 34524 125933 30531 73 3 0x1100090 kqread syslogd 30531 98068 1 0 3 0x100082 sbwait syslogd 2793 106146 1 0 3 0x100080 kqread resolvd 90848 493059 13358 77 3 0x100092 kqread dhcpleased 14542 497406 13358 77 3 0x100092 kqread dhcpleased 13358 318482 1 0 3 0x80 kqread dhcpleased 94088 280536 0 0 3 0x14200 bored smr 97523 16289 0 0 2 0x14200 zerothread 67922 23425 0 0 3 0x14200 aiodoned aiodoned 99629 305134 0 0 3 0x14200 syncer update 18325 300216 0 0 3 0x14200 cleaner cleaner 99360 129890 0 0 2 0x14200 reaper 90697 176812 0 0 3 0x14200 pgdaemon pagedaemon 5775 512838 0 0 3 0x14200 bored viomb 98364 155965 0 0 3 0x40014200 acpi0 acpi0 15599 394781 0 0 3 0x14200 bored softnet0 53983 522511 0 0 3 0x14200 bored systqmp 26093 384881 0 0 3 0x14200 bored systq 85939 212023 0 0 3 0x40014200 tmoslp softclock 86143 306525 0 0 3 0x40014200 idle0 1 93114 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 11208K 13225K 166960K 14556 0 pcb 17 20K 22K 166960K 953 0 rtable 194 8K 9K 166960K 1047 0 pf 30 13K 67480K 166960K 178 0 ifaddr 32 6K 7K 166960K 158 0 ifgroup 47 2K 2K 166960K 229 0 sysctl 4 1K 9K 166960K 26 0 counters 31 17K 18K 166960K 126 0 ioctlops 0 0K 4K 166960K 384 0 iov 0 0K 56K 166960K 287 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1586 100K 100K 166960K 3310 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 161 0 dirhash 12 2K 2K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2365 0 sigio 0 0K 0K 166960K 96 0 proc 60 59K 124K 166960K 1035 0 subproc 72 4K 4K 166960K 154 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 501 0 in_multi 56 4K 7K 166960K 308 0 ether_multi 1 0K 0K 166960K 21 0 mrt 1 0K 0K 166960K 19 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 695 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 203 143K 192K 166960K 22865 0 UVM aobj 62 2K 2K 166960K 65 0 pinsyscall 39 78K 98K 166960K 3726 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 196 0 NDP 10 0K 2K 166960K 108 0 temp 79 8648K 8776K 166960K 111730 0 kqueue 13 20K 35K 166960K 551 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 120 420 0 417 5 4 1 3 0 8 0 rtentry 136 288 0 216 4 0 4 4 0 8 0 unpcb 144 1844 0 1829 10 8 2 6 0 8 1 syncache 336 26 0 26 4 3 1 1 0 8 1 tcpqe 32 12 0 12 3 2 1 1 0 8 1 tcpcb 736 1200 0 1188 27 19 8 14 0 8 6 arp 96 49 0 35 1 0 1 1 0 8 0 ipq 40 4 0 4 3 2 1 1 0 8 1 ipqe 40 10 0 10 3 2 1 1 0 8 1 inpcb 328 3248 0 3233 32 25 7 16 0 8 4 ip6q 72 12 0 11 1 0 1 1 0 8 0 ip6af 40 18 0 17 1 0 1 1 0 8 0 nd6 112 64 0 50 1 0 1 1 0 8 0 pkpcb 40 53 0 53 4 3 1 1 0 8 1 kcovpl 48 17 0 9 1 0 1 1 0 8 0 ppxss 1072 73 0 72 2 1 1 1 0 8 0 pppxif 1384 7 0 7 2 1 1 1 0 8 1 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 rttmr 136 4 0 3 3 2 1 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1245 0 934 31 8 23 31 0 8 2 art_table 40 1248 0 934 5 0 5 5 0 8 0 art_node 32 285 0 226 1 0 1 1 0 8 0 sysvmsgpl 40 48 0 8 1 0 1 1 0 8 0 semapl 112 155 0 145 1 0 1 1 0 8 0 shmpl 112 62 0 3 2 0 2 2 0 8 0 dirhash 1024 47 0 30 3 0 3 3 0 8 0 dino2pl 256 5518 0 4004 95 0 95 95 0 8 0 ffsino 256 5518 0 4004 95 0 95 95 0 8 0 nchpl 144 8625 0 6908 64 0 64 64 0 8 0 rtmask 32 13 0 13 3 3 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 31475 0 31475 4 3 1 2 0 8 1 kstatmem 264 144 0 124 2 0 2 2 0 8 0 scsiplug 72 13 0 13 3 2 1 1 0 8 1 scxspl 216 31782 0 31782 11 10 1 8 1 8 1 plimitpl 152 655 0 639 1 0 1 1 0 8 0 sigapl 424 2645 0 2580 8 0 8 8 0 8 0 knotepl 120 115222 0 115174 82 72 10 17 0 8 8 kqueuepl 184 889 0 880 6 5 1 4 0 8 0 pipepl 304 433 0 406 7 4 3 7 0 8 0 fdescpl 448 2600 0 2570 5 1 4 5 0 8 0 filepl 120 18358 0 18148 22 13 9 14 0 8 0 lockfpl 104 971 0 969 2 1 1 2 0 8 0 lockfspl 48 310 0 308 1 0 1 1 0 8 0 sessionpl 144 55 0 47 1 0 1 1 0 8 0 pgrppl 48 198 0 182 1 0 1 1 0 8 0 ucredpl 104 2968 0 2955 1 0 1 1 0 8 0 zombiepl 144 3697 0 3696 1 0 1 1 0 8 0 processpl 1152 2645 0 2580 6 1 5 6 0 8 0 procpl 664 6355 0 6288 10 2 8 9 0 8 1 sosppl 168 14 0 14 4 3 1 1 0 8 1 sockpl 552 5640 0 5607 34 26 8 16 0 8 3 mcl64k 65536 380 0 379 4 3 1 1 0 8 0 mcl16k 16384 29 0 29 4 3 1 1 0 8 1 mcl12k 12288 14 0 14 4 3 1 1 0 8 1 mcl9k 9216 4 0 4 3 2 1 1 0 8 1 mcl8k 8192 82 0 82 4 3 1 1 0 8 1 mcl4k 4096 5795 0 5743 15 7 8 13 0 8 1 mcl2k2 2112 3 0 3 2 1 1 1 0 8 1 mcl2k 2048 3580 0 3566 11 7 4 7 0 8 2 mtagpl 96 81 0 71 1 0 1 1 0 8 0 mbufpl 256 30761 0 30580 80 63 17 78 0 8 2 bufpl 280 11531 0 5309 445 0 445 445 0 8 0 anonpl 24 389434 0 385990 101 40 61 61 0 187 21 amapchunkpl 152 80048 0 79638 74 42 32 43 0 158 11 amappl16 200 7538 0 7508 43 30 13 15 0 8 8 amappl15 192 36 0 36 1 1 0 1 0 8 0 amappl14 184 6 0 6 1 1 0 1 0 8 0 amappl13 176 507 0 505 1 0 1 1 0 8 0 amappl12 168 3049 0 3012 3 0 3 3 0 8 0 amappl11 160 9 0 8 1 0 1 1 0 8 0 amappl10 152 76 0 66 1 0 1 1 0 8 0 amappl9 144 241 0 241 2 2 0 1 0 8 0 amappl8 136 27 0 25 1 0 1 1 0 8 0 amappl7 128 115 0 114 1 0 1 1 0 8 0 amappl6 120 395 0 382 1 0 1 1 0 8 0 amappl5 112 103 0 93 1 0 1 1 0 8 0 amappl4 104 540 0 513 1 0 1 1 0 8 0 amappl3 96 13966 0 13892 3 0 3 3 0 8 0 amappl2 88 2849 0 2779 3 0 3 3 0 8 0 amappl1 80 23863 0 23334 19 2 17 19 0 8 1 amappl 88 21521 0 21385 5 0 5 5 0 92 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 dma65536 65536 2 0 2 1 1 0 1 0 8 0 dma4096 4096 2 0 2 1 1 0 1 0 8 0 dma2048 2048 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 128 258 0 258 3 3 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 64 0 3 2 0 2 2 0 8 0 uaddrrnd 24 2600 0 2570 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2600 0 2570 1 0 1 1 0 8 0 vmmpekpl 168 23320 0 23284 3 0 3 3 0 8 0 vmmpepl 168 175040 0 173306 127 30 97 115 0 357 8 vmsppl 368 2599 0 2570 5 1 4 4 0 8 0 rwobjpl 40 54144 0 47329 73 0 73 73 0 8 2 pdppl 4096 5207 0 5140 179 110 69 83 0 8 2 pvpl 32 1138451 0 1130122 226 85 141 141 0 265 37 pmappl 216 2599 0 2570 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 574 0 235 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace dt_ioctl_record_stop(ffff800001491980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9e75c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066e137a8,81,fffffd8007bfb4e0,ffff8000315034f8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8078c4c9e0,ffff8000315034f8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8078c4c9e0,ffff8000315034f8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff8000315034f8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff8000315034f8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000315034f8,ffff80003c9e7920,ffff80003c9e7870) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e7920) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e7920) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7316bb3a9a90, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace dt_ioctl_record_stop(ffff800001491980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000315034f8) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9e75c0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8066e137a8,81,fffffd8007bfb4e0,ffff8000315034f8) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8078c4c9e0,ffff8000315034f8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8078c4c9e0,ffff8000315034f8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8078c4c9e0,ffff8000315034f8) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff8000315034f8) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff8000315034f8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000315034f8,ffff80003c9e7920,ffff80003c9e7870) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e7920) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e7920) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7316bb3a9a90, count: -12