uvm_fault(0xfffffd806c90d3e8, 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(ffff800001638000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,2,2000,ffff8000fffe8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,2,2000,ffff8000fffe8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c456cd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f58fdc8,2,fffffd80097fd270,ffff8000fffe8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064742150,ffff8000fffe8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064742150,ffff8000fffe8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064742150,ffff8000fffe8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064742150,ffff8000fffe8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8d18,ffff80003c457040,ffff80003c456f90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c457040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c457040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x704a60923f90, 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(0xfffffd806c90d3e8, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff800001638000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,2,2000,ffff8000fffe8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,2,2000,ffff8000fffe8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c456cd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f58fdc8,2,fffffd80097fd270,ffff8000fffe8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064742150,ffff8000fffe8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064742150,ffff8000fffe8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064742150,ffff8000fffe8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064742150,ffff8000fffe8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8d18,ffff80003c457040,ffff80003c456f90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c457040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c457040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x704a60923f90, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c456c00 rbx 0x1 rdx 0 rcx 0xffff8000fffe8d18 rax 0xffffffff838370a0 dt_prov_syscall r8 0xffffffffffffffff r9 0 r10 0xc88f6075a99894cd r11 0x22a3efdf064b31e7 r12 0 r13 0 r14 0 r15 0xffff800001609a00 rip 0xffffffff8150da58 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003c456bd0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=25464 pid=41986 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffe8d18 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000fffe8a80,0xffffffff839163d0 process=0xffff80003c4ac028 user=0xffff80003c452000, vmspace=0xfffffd806c90d3e8 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67216 111441 37330 0 2 0 syz-executor 67216 425124 37330 0 3 0x4000080 ttyopn syz-executor 76259 259706 37516 0 3 0x80 nanoslp syz-executor 76259 31768 37516 0 3 0x4000080 sbwait syz-executor 76259 291104 37516 0 3 0x4000080 fsleep syz-executor 1016 400527 82006 0 3 0x80 nanoslp syz-executor 1016 248200 82006 0 3 0x4000080 sbwait syz-executor 1016 362369 82006 0 3 0x4000080 fsleep syz-executor 1016 133703 82006 0 3 0x4000080 fsleep syz-executor 66339 49768 0 0 3 0x14280 nfsidl nfsio 83712 24369 0 0 3 0x14280 nfsidl nfsio 73049 17834 0 0 3 0x14280 nfsidl nfsio 30170 5380 0 0 3 0x14280 nfsidl nfsio 85915 156687 0 0 3 0x14280 nfsidl nfsio 17814 253236 0 0 3 0x14280 nfsidl nfsio 2679 392338 0 0 3 0x14280 nfsidl nfsio 27113 155655 0 0 3 0x14280 nfsidl nfsio 76860 114026 0 0 3 0x14280 nfsidl nfsio 66841 50427 0 0 3 0x14280 nfsidl nfsio 55004 230842 0 0 3 0x14280 nfsidl nfsio 58122 95844 0 0 3 0x14280 nfsidl nfsio 73011 297768 0 0 3 0x14280 nfsidl nfsio 2010 146770 0 0 3 0x14280 nfsidl nfsio 63323 75678 0 0 3 0x14280 nfsidl nfsio 5307 238324 0 0 3 0x14280 nfsidl nfsio 69203 408770 0 0 3 0x14280 nfsidl nfsio 35371 330172 0 0 3 0x14280 nfsidl nfsio 23010 168385 0 0 3 0x14280 nfsidl nfsio 92950 505984 0 0 3 0x14280 nfsidl nfsio 27684 456675 0 0 3 0x14200 acct acct 85518 118692 97834 0 3 0x100082 sbwait arp 97834 351551 232 0 3 0x10008a sigsusp sh 26036 205211 75460 0 3 0x82 nanoslp syz-executor 44858 366031 75460 0 3 0x82 nanoslp syz-executor 83267 81239 75460 0 3 0x82 nanoslp syz-executor 71796 493568 75460 0 3 0x82 nanoslp syz-executor 82006 401084 75460 0 3 0x82 nanoslp syz-executor 37330 18160 75460 0 3 0x82 nanoslp syz-executor 37516 321508 75460 0 3 0x82 nanoslp syz-executor 232 23817 75460 0 3 0x82 wait syz-executor 75460 120786 87067 0 3 0x82 kqread syz-executor 87067 22850 3518 0 3 0x10008a sigsusp ksh 3518 173445 28593 0 3 0x98 kqread sshd-session 28593 444206 6158 0 3 0x92 kqread sshd-session 9761 74717 1 0 3 0x100083 ttyopn getty 6158 41597 1 0 3 0x88 kqread sshd 51221 489960 45237 74 3 0x1100092 bpf pflogd 45237 173054 1 0 3 0x80 sbwait pflogd 51352 84645 17036 73 3 0x1100090 kqread syslogd 17036 450280 1 0 3 0x100082 sbwait syslogd 22165 254654 1 0 3 0x100080 kqread resolvd 26291 247652 11827 77 3 0x100092 kqread dhcpleased 6120 139062 11827 77 3 0x100092 kqread dhcpleased 11827 292780 1 0 3 0x80 kqread dhcpleased 9055 57317 0 0 3 0x14200 bored smr 57 102311 0 0 2 0x14200 zerothread 41106 249827 0 0 3 0x14200 aiodoned aiodoned 81300 383455 0 0 3 0x14200 syncer update 71358 303053 0 0 3 0x14200 cleaner cleaner 91794 497379 0 0 3 0x14200 reaper reaper 4185 316412 0 0 3 0x14200 pgdaemon pagedaemon 28944 300954 0 0 3 0x14200 bored viomb 93248 406567 0 0 3 0x40014200 acpi0 acpi0 59719 142232 0 0 7 0x40014200 idle1 31003 104482 0 0 3 0x14200 bored softnet1 68120 489705 0 0 3 0x14200 bored softnet0 36837 374434 0 0 3 0x14200 bored systqmp 13517 40348 0 0 3 0x14200 bored systq 47062 426476 0 0 3 0x14200 tmoslp softclockmp 32094 422717 0 0 3 0x40014200 tmoslp softclock 36694 305505 0 0 3 0x40014200 idle0 1 241140 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 11076 12123K 13014K 166960K 12618 0 pcb 18 15K 16K 166960K 148 0 rtable 193 10K 10K 166960K 440 0 pf 39 18K 23K 166960K 89 0 ifaddr 38 6K 7K 166960K 68 0 ifgroup 55 2K 2K 166960K 90 0 sysctl 3 1K 9K 166960K 9 0 counters 70 37K 37K 166960K 186 0 ioctlops 0 0K 4K 166960K 1587 0 iov 0 0K 20K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1464 92K 92K 166960K 1879 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 25 0 dirhash 12 2K 2K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 97K 166960K 490 0 sigio 0 0K 0K 166960K 11 0 proc 72 115K 180K 166960K 547 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 176 0 in_multi 81 5K 6K 166960K 123 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 9 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 484 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 172K 184K 166960K 6244 0 UVM aobj 13 6K 6K 166960K 13 0 pinsyscall 45 90K 110K 166960K 1610 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 35 0 NDP 12 0K 1K 166960K 43 0 temp 50 8677K 8748K 166960K 13738 0 kqueue 14 22K 33K 166960K 119 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 59 0 55 1 0 1 1 0 8 0 rtentry 176 128 0 53 5 0 5 5 0 8 0 unpcb 144 341 0 314 4 2 2 3 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpcb 736 205 0 201 7 6 1 7 0 8 0 arp 136 21 0 8 1 0 1 1 0 8 0 inpcb 328 726 0 718 13 11 2 12 0 8 0 nd6 152 27 0 8 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 57 0 57 1 0 1 1 0 8 1 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pffrag 232 5 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 7 0 3 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 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pfanchor 1288 5 0 0 1 0 1 1 0 8 0 pfstitem 24 5 0 2 1 0 1 1 0 8 0 pfstkey 128 6 0 3 1 0 1 1 0 8 0 pfstate 448 4 0 2 1 0 1 1 0 8 0 pfrule 1360 6 0 1 1 0 1 1 0 8 0 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 582 0 256 30 5 25 28 0 8 3 art_table 40 585 0 256 5 0 5 5 0 8 0 art_node 32 128 0 61 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 2399 0 890 95 0 95 95 0 8 0 ffsino 296 2399 0 890 117 0 117 117 0 8 0 nchpl 144 3112 0 1410 64 0 64 64 0 8 0 rtmask 32 4 0 4 1 0 1 1 0 8 1 vnodes 216 2737 0 0 153 0 153 153 0 8 0 namei 1024 10747 0 10747 3 2 1 2 0 8 1 percpumem 16 108 0 58 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 58 0 30 3 0 3 3 0 8 1 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 16425 0 16425 4 3 1 3 1 8 1 plimitpl 152 101 0 83 1 0 1 1 0 8 0 sigapl 424 820 0 750 8 0 8 8 0 8 0 knotepl 120 310 0 0 10 0 10 10 0 8 0 kqueuepl 224 229 0 219 5 4 1 3 0 8 0 pipepl 344 161 0 134 3 0 3 3 0 8 0 fdescpl 528 783 0 750 3 0 3 3 0 8 0 filepl 160 5145 0 4843 22 9 13 19 0 8 0 lockfpl 104 251 0 249 2 1 1 2 0 8 0 lockfspl 48 57 0 55 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 31 0 14 1 0 1 1 0 8 0 ucredpl 104 866 0 853 1 0 1 1 0 8 0 zombiepl 144 754 0 750 1 0 1 1 0 8 0 processpl 1232 820 0 750 6 0 6 6 0 8 0 procpl 664 1422 0 1346 7 0 7 7 0 8 0 sockpl 752 1140 0 1101 24 19 5 20 0 8 0 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 120 0 0 15 0 15 15 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 1160 0 0 72 0 72 72 0 8 0 bufpl 280 6430 0 294 439 0 439 439 0 8 0 anonpl 32 10554 0 0 86 0 86 86 0 246 0 amapchunkpl 152 19821 0 19107 34 5 29 29 0 158 0 amappl16 200 3078 0 3047 34 11 23 23 0 8 15 amappl15 192 24 0 24 1 1 0 1 0 8 0 amappl14 184 11 0 11 1 1 0 1 0 8 0 amappl13 176 425 0 423 1 0 1 1 0 8 0 amappl12 168 1140 0 1095 3 0 3 3 0 8 0 amappl11 160 26 0 26 1 1 0 1 0 8 0 amappl10 152 49 0 33 1 0 1 1 0 8 0 amappl9 144 283 0 283 1 1 0 1 0 8 0 amappl8 136 32 0 30 1 0 1 1 0 8 0 amappl7 128 98 0 97 1 0 1 1 0 8 0 amappl6 120 291 0 275 1 0 1 1 0 8 0 amappl5 112 89 0 78 1 0 1 1 0 8 0 amappl4 104 416 0 386 1 0 1 1 0 8 0 amappl3 96 3292 0 3193 4 1 3 3 0 8 0 amappl2 88 900 0 821 2 0 2 2 0 8 0 amappl1 80 10759 0 10136 15 0 15 15 0 8 0 amappl 88 5462 0 5286 5 0 5 5 0 92 0 uvmvnodes 80 110 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 6 0 6 1 1 0 1 0 8 0 dma128 128 254 0 254 2 2 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 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 783 0 750 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 783 0 750 1 0 1 1 0 8 0 vmmpekpl 168 8059 0 8023 2 0 2 2 0 8 0 vmmpepl 168 57352 0 55337 113 6 107 107 0 357 9 vmsppl 488 782 0 750 5 0 5 5 0 8 0 rwobjpl 80 18320 0 17217 34 2 32 32 0 8 2 pdppl 4096 1573 0 1500 99 26 73 87 0 8 0 pvpl 32 17639 0 0 143 0 143 143 0 265 0 pmappl 256 782 0 750 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 343 0 43 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff800001638000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,2,2000,ffff8000fffe8d18) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,2,2000,ffff8000fffe8d18) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c456cd0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f58fdc8,2,fffffd80097fd270,ffff8000fffe8d18) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064742150,ffff8000fffe8d18) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064742150,ffff8000fffe8d18) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064742150,ffff8000fffe8d18) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064742150,ffff8000fffe8d18) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffe8d18) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffe8d18,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffe8d18,ffff80003c457040,ffff80003c456f90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c457040) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c457040) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x704a60923f90, count: -12 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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(ffff8000299ddff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5