uvm_fault(0xfffffd8073969468, 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(ffff8000014f7980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9739e0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806742f990,1,fffffd8007bfd548,ffff80002a776d00) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806d1d2878,ffff80002a776d00) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d1d2878,ffff80002a776d00) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a776d00) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a776d00,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a776d00,ffff80003c973d40,ffff80003c973c90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f52257e09c0, 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(0xfffffd8073969468, 0x0, 0, 1) -> e ddb> trace dt_ioctl_record_stop(ffff8000014f7980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9739e0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806742f990,1,fffffd8007bfd548,ffff80002a776d00) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806d1d2878,ffff80002a776d00) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d1d2878,ffff80002a776d00) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a776d00) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a776d00,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a776d00,ffff80003c973d40,ffff80003c973c90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f52257e09c0, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c973910 rbx 0x1 rdx 0 rcx 0xffff80002a776d00 rax 0xffffffff838558b8 dt_prov_syscall r8 0xffff80003c973a60 r9 0x20 r10 0xa2ad936a341f2a51 r11 0x63f74afb3817fd7e r12 0 r13 0 r14 0 r15 0xffff8000014fa200 rip 0xffffffff8230fab8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c9738e0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb> show proc PROC (syz-executor) tid=265875 pid=84474 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=78, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a776d00 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000354fb778,0xffff8000354fc800 process=0xffff8000ffff8018 user=0xffff80003c96e000, vmspace=0xfffffd8073969468 estcpu=28, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 2517 166732 19139 0 2 0 syz-executor 2517 411782 19139 0 3 0x4000080 fsleep syz-executor 79676 125436 14314 -1 2 0x10 syz-executor 79676 387278 14314 -1 3 0x4000090 fsleep syz-executor 79676 227216 14314 -1 3 0x4000090 fsleep syz-executor 45901 319333 97718 0 2 0 syz-executor 45901 15096 97718 0 3 0x4000080 msgwait syz-executor 4556 333291 60761 0 3 0x3000 suspend syz-executor 4556 173836 60761 0 2 0x4081000 syz-executor 74256 135889 21877 0 3 0x80 nanoslp syz-executor 74256 179877 21877 0 2 0x4000080 syz-executor 74256 204670 21877 0 2 0x4000080 syz-executor 74256 496090 21877 0 3 0x4000080 fsleep syz-executor 94758 215895 91091 0 3 0x3000 suspend syz-executor 94758 341278 91091 0 2 0x4081000 syz-executor 94758 384538 91091 0 3 0x4081000 inode syz-executor 59726 50912 1 0 3 0x100083 ttyin getty 97589 253266 26528 0 3 0x82 nanoslp syz-executor 91091 177352 26528 0 2 0xc82 syz-executor 45486 337690 26528 0 2 0x2 syz-executor 97718 199297 26528 0 3 0x82 nanoslp syz-executor 60761 122474 26528 0 2 0xc82 syz-executor 14314 481623 26528 0 2 0xc82 syz-executor 21877 296234 26528 0 2 0xc82 syz-executor 19139 78854 26528 0 2 0xc82 syz-executor 26528 452697 32701 0 3 0x82 kqread syz-executor 32701 6942 82751 0 3 0x10008a sigsusp ksh 82751 8751 18638 0 3 0x98 kqread sshd-session 18638 39376 12813 0 3 0x92 kqread sshd-session 12813 401413 1 0 3 0x88 kqread sshd 42645 467304 60158 73 3 0x1100090 kqread syslogd 60158 467135 1 0 3 0x100082 sbwait syslogd 61627 478459 1 0 3 0x100080 kqread resolvd 35467 164184 6364 77 3 0x100092 kqread dhcpleased 33335 183001 6364 77 3 0x100092 kqread dhcpleased 6364 343178 1 0 3 0x80 kqread dhcpleased 97635 520318 0 0 3 0x14200 bored smr 75171 216069 0 0 2 0x14200 zerothread 52088 121635 0 0 3 0x14200 aiodoned aiodoned 19396 471666 0 0 3 0x14200 syncer update 22472 475070 0 0 3 0x14200 cleaner cleaner 88233 134873 0 0 3 0x14200 reaper reaper 19806 386206 0 0 3 0x14200 pgdaemon pagedaemon 11274 368949 0 0 3 0x14200 bored viomb 34630 432066 0 0 3 0x40014200 acpi0 acpi0 10500 123274 0 0 2 0x14200 softnet0 83458 86441 0 0 3 0x14200 smrbar systqmp 75095 213642 0 0 3 0x14200 bored systq 68108 475390 0 0 3 0x40014200 tmoslp softclock 17735 352887 0 0 3 0x40014200 idle0 1 292798 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 10188 11097K 11470K 166960K 11823 0 pcb 17 14K 14K 166960K 166 0 rtable 253 8K 8K 166960K 473 0 pf 30 12K 17K 166960K 66 0 ifaddr 43 7K 7K 166960K 57 0 ifgroup 50 2K 2K 166960K 79 0 sysctl 4 1K 9K 166960K 8 0 counters 33 17K 18K 166960K 46 0 ioctlops 0 0K 4K 166960K 95 0 iov 1 0K 24K 166960K 26 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1409 89K 89K 166960K 1730 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 22 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 490 0 sigio 0 0K 0K 166960K 10 0 proc 61 59K 100K 166960K 532 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 51 0 in_multi 99 7K 7K 166960K 115 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 5 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 412 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 229 159K 175K 166960K 5822 0 UVM aobj 13 4K 4K 166960K 13 0 pinsyscall 38 76K 90K 166960K 1558 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 26 0 NDP 11 0K 1K 166960K 37 0 temp 47 8661K 8725K 166960K 26411 0 kqueue 13 20K 27K 166960K 67 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 62 0 59 1 0 1 1 0 8 0 rtentry 136 120 0 7 5 0 5 5 0 8 1 unpcb 144 222 0 205 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 147 0 143 4 0 4 4 0 8 3 arp 96 20 0 0 1 0 1 1 0 8 0 ipq 40 2 0 1 1 0 1 1 0 8 0 ipqe 40 3 0 2 1 0 1 1 0 8 0 inpcb 328 514 0 505 7 0 7 7 0 8 5 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 112 26 0 2 1 0 1 1 0 8 0 pkpcb 40 66 0 66 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 10 0 10 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfrule 1344 1 0 1 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 458 0 4 29 0 29 29 0 8 0 art_table 40 459 0 4 5 0 5 5 0 8 0 art_node 32 120 0 17 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 4 1 0 1 1 0 8 1 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 9 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2190 0 685 95 0 95 95 0 8 0 ffsino 256 2190 0 685 95 0 95 95 0 8 0 nchpl 144 2888 0 1191 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2521 0 0 141 0 141 141 0 8 0 namei 1024 9562 0 9562 2 0 2 2 0 8 2 vcpupl 3904 1 0 0 1 0 1 1 0 8 0 vmpool 800 1 0 0 1 0 1 1 0 8 0 kstatmem 264 42 0 20 2 0 2 2 0 8 0 scxspl 216 11144 0 11144 8 0 8 8 1 8 8 plimitpl 152 108 0 91 1 0 1 1 0 8 0 sigapl 424 766 0 724 6 0 6 6 0 8 1 knotepl 120 15970 0 15923 21 11 10 16 0 8 8 kqueuepl 184 105 0 96 1 0 1 1 0 8 0 pipepl 304 212 0 185 3 0 3 3 0 8 0 fdescpl 448 753 0 724 4 0 4 4 0 8 0 filepl 120 4265 0 4049 11 0 11 11 0 8 3 lockfpl 104 132 0 128 1 0 1 1 0 8 0 lockfspl 48 56 0 52 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 388 0 376 1 0 1 1 0 8 0 zombiepl 144 727 0 724 1 0 1 1 0 8 0 processpl 1152 766 0 724 4 0 4 4 0 8 0 procpl 664 1296 0 1244 6 0 6 6 0 8 1 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 873 0 844 12 1 11 12 0 8 8 mcl64k 65536 26 0 25 1 0 1 1 0 8 0 mcl8k 8192 10 0 10 1 0 1 1 0 8 1 mcl4k 4096 2923 0 2865 16 1 15 16 0 8 7 mcl2k 2048 668 0 667 6 0 6 6 0 8 5 mtagpl 96 21 0 4 1 0 1 1 0 8 0 mbufpl 256 8091 0 7882 20 0 20 20 0 8 2 bufpl 280 3975 0 119 276 0 276 276 0 8 0 anonpl 24 106291 0 99559 41 0 41 41 0 187 0 amapchunkpl 152 18649 0 18167 37 0 37 37 0 158 16 amappl16 200 1281 0 1026 14 0 14 14 0 8 0 amappl15 192 34 0 34 1 0 1 1 0 8 1 amappl14 184 4 0 3 1 0 1 1 0 8 0 amappl13 176 403 0 402 1 0 1 1 0 8 0 amappl12 168 1096 0 1057 2 0 2 2 0 8 0 amappl11 160 24 0 23 1 0 1 1 0 8 0 amappl10 152 38 0 28 1 0 1 1 0 8 0 amappl9 144 260 0 259 1 0 1 1 0 8 0 amappl8 136 19 0 18 1 0 1 1 0 8 0 amappl7 128 111 0 110 1 0 1 1 0 8 0 amappl6 120 259 0 248 1 0 1 1 0 8 0 amappl5 112 67 0 60 1 0 1 1 0 8 0 amappl4 104 379 0 356 1 0 1 1 0 8 0 amappl3 96 3522 0 3417 4 0 4 4 0 8 0 amappl2 88 504 0 450 2 0 2 2 0 8 0 amappl1 80 10184 0 9652 12 0 12 12 0 8 0 amappl 88 5054 0 4893 5 0 5 5 0 92 0 uvmvnodes 80 111 0 0 3 0 3 3 0 8 0 dma4096 4096 2 0 2 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 6 0 6 1 0 1 1 0 8 1 dma32 32 9 0 9 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 753 0 724 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 753 0 724 1 0 1 1 0 8 0 vmmpekpl 168 7440 0 7413 2 0 2 2 0 8 0 vmmpepl 168 53177 0 51161 91 0 91 91 0 357 0 vmsppl 368 752 0 724 4 0 4 4 0 8 1 rwobjpl 40 15872 0 14684 13 0 13 13 0 8 0 pdppl 4096 1514 0 1449 98 31 67 76 0 8 2 pvpl 32 314240 0 302331 108 0 108 108 0 265 2 pmappl 216 753 0 724 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 383 0 32 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace dt_ioctl_record_stop(ffff8000014f7980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9739e0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806742f990,1,fffffd8007bfd548,ffff80002a776d00) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806d1d2878,ffff80002a776d00) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d1d2878,ffff80002a776d00) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a776d00) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a776d00,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a776d00,ffff80003c973d40,ffff80003c973c90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f52257e09c0, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace dt_ioctl_record_stop(ffff8000014f7980) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a776d00) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c9739e0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806742f990,1,fffffd8007bfd548,ffff80002a776d00) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806d1d2878,ffff80002a776d00) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806d1d2878,ffff80002a776d00) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806d1d2878,ffff80002a776d00) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a776d00) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a776d00,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a776d00,ffff80003c973d40,ffff80003c973c90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c973d40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c973d40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f52257e09c0, count: -12