uvm_fault(0xfffffd806cd1b8b0, 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(ffff80000161b300) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a808ce0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064f64700,81,fffffd8007ffd618,ffff80003c8fa028) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8061cf3170,ffff80003c8fa028) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8061cf3170,ffff80003c8fa028) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fa028) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fa028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fa028,ffff80002a809040,ffff80002a808f90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a809040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a809040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70746d0761e0, 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(0xfffffd806cd1b8b0, 0x0, 0, 1) -> e ddb> trace dt_ioctl_record_stop(ffff80000161b300) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a808ce0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064f64700,81,fffffd8007ffd618,ffff80003c8fa028) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8061cf3170,ffff80003c8fa028) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8061cf3170,ffff80003c8fa028) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fa028) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fa028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fa028,ffff80002a809040,ffff80002a808f90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a809040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a809040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70746d0761e0, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002a808c10 rbx 0x1 rdx 0 rcx 0xffff80003c8fa028 rax 0xffffffff838a1e70 dt_prov_static r8 0x1c8 r9 0 r10 0xf05f5b72ac944994 r11 0x25a59fe7947a910f r12 0 r13 0 r14 0 r15 0xffff80000165fd00 rip 0xffffffff812d69f8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002a808be0 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb> show proc PROC (syz-executor) tid=5252 pid=31736 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c8fa028 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c8fafb8,0xffffffff839a6510 process=0xffff8000ffff8498 user=0xffff80002a804000, vmspace=0xfffffd806cd1b8b0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 23743 412301 93432 0 2 0x10 syz-executor 23743 256799 93432 0 3 0x4000090 ttyin syz-executor 23743 279609 93432 0 3 0x4000090 ttyin syz-executor 23743 131388 93432 0 3 0x4000090 ttyin syz-executor 74534 107543 88147 0 3 0x80 nanoslp syz-executor 74534 174147 88147 0 3 0x4000080 ttyin syz-executor 74534 516823 88147 0 3 0x4000080 fsleep syz-executor 23548 113349 89518 0 2 0x2 syz-executor 81713 228385 0 0 3 0x14280 nfsidl nfsio 3840 163681 0 0 3 0x14280 nfsidl nfsio 72052 61725 0 0 3 0x14280 nfsidl nfsio 92269 363550 0 0 3 0x14280 nfsidl nfsio 73687 503234 0 0 3 0x14280 nfsidl nfsio 72157 244220 0 0 3 0x14280 nfsidl nfsio 32603 364914 0 0 3 0x14280 nfsidl nfsio 40328 459536 0 0 3 0x14280 nfsidl nfsio 59285 53136 0 0 3 0x14280 nfsidl nfsio 83335 237698 0 0 3 0x14280 nfsidl nfsio 92282 511109 0 0 3 0x14280 nfsidl nfsio 59115 134714 0 0 3 0x14280 nfsidl nfsio 96769 192300 0 0 3 0x14280 nfsidl nfsio 55368 412439 0 0 3 0x14280 nfsidl nfsio 63208 77619 0 0 3 0x14280 nfsidl nfsio 38525 372413 0 0 3 0x14280 nfsidl nfsio 94570 394091 0 0 3 0x14280 nfsidl nfsio 78865 244460 0 0 3 0x14280 nfsidl nfsio 91140 504895 0 0 3 0x14280 nfsidl nfsio 29704 346226 0 0 3 0x14280 nfsidl nfsio 88147 238929 89518 0 2 0xc82 syz-executor 47925 351102 89518 0 2 0x2 syz-executor 13476 221903 89518 0 2 0xc82 syz-executor 30403 430676 89518 0 3 0x82 wait syz-executor 97614 326389 89518 0 3 0x82 nanoslp syz-executor 93432 456226 89518 0 3 0x82 nanoslp syz-executor 51831 461902 89518 0 2 0xc82 syz-executor 89518 233911 68953 0 2 0x2 syz-executor 68953 401705 83872 0 3 0x10008a sigsusp ksh 83872 440860 22541 0 3 0x98 kqread sshd-session 22541 383948 89858 0 3 0x92 kqread sshd-session 90915 295092 1 0 3 0x100083 ttyopn getty 89858 242089 1 0 3 0x88 kqread sshd 63269 263707 62032 73 3 0x1100090 kqread syslogd 62032 118167 1 0 3 0x100082 sbwait syslogd 99868 223247 1 0 3 0x100080 kqread resolvd 92407 472498 90419 77 3 0x100092 kqread dhcpleased 74178 492211 90419 77 3 0x100092 kqread dhcpleased 90419 453639 1 0 3 0x80 kqread dhcpleased 20567 168356 0 0 3 0x14200 bored smr 1185 367822 0 0 2 0x14200 zerothread 1310 461580 0 0 3 0x14200 aiodoned aiodoned 44939 82718 0 0 3 0x14200 syncer update 40778 226935 0 0 3 0x14200 cleaner cleaner 79785 253908 0 0 3 0x14200 reaper reaper 98616 255537 0 0 3 0x14200 pgdaemon pagedaemon 68767 252156 0 0 3 0x14200 bored viomb 78954 70837 0 0 3 0x40014200 acpi0 acpi0 19981 227413 0 0 3 0x14200 bored softnet0 82783 224556 0 0 3 0x14200 bored systqmp 41010 136313 0 0 3 0x14200 bored systq 862 487328 0 0 3 0x40014200 tmoslp softclock 54005 174626 0 0 3 0x40014200 idle0 1 13626 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 11114 12258K 13394K 166960K 16244 0 pcb 18 16K 18K 166960K 647 0 rtable 264 18K 18K 166960K 845 0 pf 40 14K 18K 166960K 257 0 ifaddr 47 9K 9K 166960K 162 0 ifgroup 57 2K 2K 166960K 265 0 sysctl 4 1K 9K 166960K 24 0 counters 37 18K 18K 166960K 129 0 ioctlops 0 0K 4K 166960K 522 0 iov 0 0K 28K 166960K 84 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1479 93K 93K 166960K 3798 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 24 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 175 0 dirhash 12 2K 2K 166960K 39 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 240K 166960K 2191 0 sigio 0 0K 0K 166960K 18 0 proc 60 59K 108K 166960K 842 0 subproc 72 4K 4K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 307 0 in_multi 101 7K 7K 166960K 264 0 ether_multi 1 0K 0K 166960K 32 0 mrt 2 0K 0K 166960K 32 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 621 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 214 142K 171K 166960K 20272 0 UVM aobj 61 44K 44K 166960K 68 0 pinsyscall 37 74K 92K 166960K 3425 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 183 0 NDP 14 0K 2K 166960K 121 0 temp 80 9076K 9152K 166960K 52918 0 kqueue 13 20K 33K 166960K 426 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 120 226 0 223 1 0 1 1 0 8 0 rtentry 136 227 0 123 4 0 4 4 0 8 0 unpcb 144 1613 0 1598 6 0 6 6 0 8 5 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 855 0 850 7 0 7 7 0 8 6 arp 96 38 0 19 1 0 1 1 0 8 0 ipq 40 5 0 1 1 0 1 1 0 8 0 ipqe 40 8 0 4 1 0 1 1 0 8 0 inpcb 328 2367 0 2355 7 0 7 7 0 8 5 ip6q 72 5 0 1 1 0 1 1 0 8 0 ip6af 40 6 0 2 1 0 1 1 0 8 0 nd6 112 51 0 26 1 0 1 1 0 8 0 pkpcb 40 8 0 8 1 0 1 1 0 8 1 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 4 0 4 1 0 1 1 0 8 1 ppxss 1072 74 0 72 1 0 1 1 0 8 0 pppxif 1416 6 0 6 1 0 1 1 0 8 1 pfrktable 1344 10 0 8 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 6 0 4 1 0 1 1 0 8 0 pfstate 384 3 0 2 1 0 1 1 0 8 0 pfrule 1360 16 0 9 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 975 0 538 33 2 31 33 0 8 3 art_table 40 979 0 538 6 0 6 6 0 8 0 art_node 32 223 0 130 1 0 1 1 0 8 0 sysvmsgpl 40 54 0 19 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 168 0 158 1 0 1 1 0 8 0 shmpl 112 45 0 6 2 0 2 2 0 8 0 dirhash 1024 35 0 18 3 0 3 3 0 8 0 dino2pl 256 5446 0 3979 93 0 93 93 0 8 0 ffsino 256 5446 0 3979 93 0 93 93 0 8 0 nchpl 144 8365 0 6654 64 0 64 64 0 8 0 rtmask 32 6 0 5 1 0 1 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 27832 0 27832 2 0 2 2 0 8 2 vcpupl 3904 20 0 1 3 0 3 3 0 8 0 vmpool 808 20 0 1 2 0 2 2 0 8 0 pfiaddrpl 120 6 0 0 1 0 1 1 0 8 0 kstatmem 264 182 0 154 3 0 3 3 0 8 0 scsiplug 72 18 0 18 1 0 1 1 0 8 1 scxspl 216 35919 0 35919 8 0 8 8 1 8 8 plimitpl 152 347 0 329 1 0 1 1 0 8 0 sigapl 424 2484 0 2423 8 0 8 8 0 8 0 knotepl 120 99436 0 99388 24 13 11 16 0 8 7 kqueuepl 184 629 0 620 1 0 1 1 0 8 0 pipepl 304 290 0 263 3 0 3 3 0 8 0 fdescpl 448 2445 0 2417 5 0 5 5 0 8 1 filepl 120 15317 0 15094 12 0 12 12 0 8 2 lockfpl 104 1104 0 1102 2 0 2 2 0 8 1 lockfspl 48 451 0 449 1 0 1 1 0 8 0 sessionpl 144 28 0 20 1 0 1 1 0 8 0 pgrppl 48 47 0 31 1 0 1 1 0 8 0 ucredpl 104 2743 0 2728 1 0 1 1 0 8 0 zombiepl 144 2427 0 2423 1 0 1 1 0 8 0 processpl 1152 2484 0 2423 5 0 5 5 0 8 0 procpl 664 5246 0 5180 7 0 7 7 0 8 0 sosppl 176 11 0 11 1 0 1 1 0 8 1 sockpl 552 4365 0 4335 12 1 11 12 0 8 8 mcl64k 65536 225 0 222 2 0 2 2 0 8 1 mcl16k 16384 66 0 66 1 0 1 1 0 8 1 mcl12k 12288 41 0 41 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 89 0 89 1 0 1 1 0 8 1 mcl4k 4096 5439 0 5385 16 1 15 16 0 8 8 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 2164 0 2153 2 0 2 2 0 8 0 mtagpl 96 168 0 116 2 0 2 2 0 8 0 mbufpl 256 173444 0 173237 18 0 18 18 0 8 1 bufpl 280 11972 0 5758 445 0 445 445 0 8 1 anonpl 24 265707 0 262536 56 0 56 56 0 187 16 amapchunkpl 152 68510 0 68062 37 0 37 37 0 158 16 amappl16 200 3927 0 3896 20 7 13 15 0 8 8 amappl15 192 27 0 27 1 0 1 1 0 8 1 amappl14 184 476 0 475 1 0 1 1 0 8 0 amappl13 176 137 0 127 1 0 1 1 0 8 0 amappl12 168 2702 0 2675 2 0 2 2 0 8 0 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 266 0 266 1 0 1 1 0 8 1 amappl8 136 117 0 116 1 0 1 1 0 8 0 amappl7 128 170 0 159 1 0 1 1 0 8 0 amappl6 120 207 0 205 1 0 1 1 0 8 0 amappl5 112 85 0 77 1 0 1 1 0 8 0 amappl4 104 277 0 260 1 0 1 1 0 8 0 amappl3 96 14396 0 14292 4 0 4 4 0 8 0 amappl2 88 566 0 510 2 0 2 2 0 8 0 amappl1 80 18230 0 17685 15 0 15 15 0 8 2 amappl 88 19221 0 19068 5 0 5 5 0 92 0 uvmvnodes 80 156 0 0 4 0 4 4 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 268 0 268 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 8 0 8 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 67 0 7 2 0 2 2 0 8 0 uaddrrnd 24 2445 0 2417 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2445 0 2417 1 0 1 1 0 8 0 vmmpekpl 168 17705 0 17654 3 0 3 3 0 8 0 vmmpepl 168 150881 0 149127 93 0 93 93 0 357 10 vmsppl 368 2444 0 2417 4 0 4 4 0 8 1 rwobjpl 40 35659 0 34597 14 0 14 14 0 8 0 pdppl 4096 4936 0 4855 123 38 85 87 0 8 4 pvpl 32 989680 0 979822 146 0 146 146 0 265 42 pmappl 216 2464 0 2418 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 416 0 41 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace dt_ioctl_record_stop(ffff80000161b300) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a808ce0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064f64700,81,fffffd8007ffd618,ffff80003c8fa028) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8061cf3170,ffff80003c8fa028) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8061cf3170,ffff80003c8fa028) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fa028) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fa028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fa028,ffff80002a809040,ffff80002a808f90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a809040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a809040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70746d0761e0, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace dt_ioctl_record_stop(ffff80000161b300) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c8fa028) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002a808ce0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8064f64700,81,fffffd8007ffd618,ffff80003c8fa028) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8061cf3170,ffff80003c8fa028) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8061cf3170,ffff80003c8fa028) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffd8061cf3170,ffff80003c8fa028) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fa028) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fa028,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fa028,ffff80002a809040,ffff80002a808f90) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a809040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a809040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70746d0761e0, count: -12