uvm_fault(0xfffffd800b0273d0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 TID PID UID PRFLAGS PFLAGS CPU COMMAND dt_ioctl_record_stop(ffff80000164a000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff80002a2a99b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2a99b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003a823ae0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805bf842a0,81,fffffd80097fb5b0,ffff80002a2a99b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf4f988,ffff80002a2a99b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf4f988,ffff80002a2a99b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf4f988,ffff80002a2a99b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bf4f988,ffff80002a2a99b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2a99b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2a99b8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2a99b8,ffff80003a823e50,ffff80003a823da0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a823e50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a823e50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75bb0b28ad10, 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(0xfffffd800b0273d0, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff80000164a000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff80002a2a99b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2a99b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003a823ae0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805bf842a0,81,fffffd80097fb5b0,ffff80002a2a99b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf4f988,ffff80002a2a99b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf4f988,ffff80002a2a99b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf4f988,ffff80002a2a99b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bf4f988,ffff80002a2a99b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2a99b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2a99b8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2a99b8,ffff80003a823e50,ffff80003a823da0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a823e50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a823e50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75bb0b28ad10, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003a823a10 rbx 0xffffffff81f91b40 dtclose rdx 0 rcx 0xffff80002a2a99b8 rax 0xffffffff83852588 dt_prov_syscall r8 0 r9 0 r10 0x68777a8d0b9bac7a r11 0xfad6e4872ee0acae r12 0xffff80000006ca80 r13 0 r14 0 r15 0xffff800001501600 rip 0xffffffff81f91f20 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80003a8239e0 ss 0x10 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{0}> show proc PROC (syz-executor) tid=323535 pid=6306 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=83, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a2a99b8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4499c8,0xffff80003c448a78 process=0xffff80002a2b04f8 user=0xffff80003a81e000, vmspace=0xfffffd800b0273d0 estcpu=33, cpticks=1, pctcpu=0.3, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82399 103671 41466 0 2 0 syz-executor 82399 276969 41466 0 2 0x4000000 syz-executor 53049 46249 93675 0 2 0 syz-executor 53049 204014 93675 0 3 0x4000080 fsleep syz-executor 56838 142213 73749 0 2 0 syz-executor 56838 339692 73749 0 3 0x4000080 fsleep syz-executor 56838 88484 73749 0 2 0x4000000 syz-executor 75143 278361 67729 0 3 0x80 nanoslp syz-executor 75143 230078 67729 0 3 0x4000080 kqread syz-executor 75143 42230 67729 0 3 0x4000080 fsleep syz-executor 78711 89347 60309 0 2 0x1 syz-executor 78711 513200 60309 0 3 0x4000080 fsleep syz-executor 86301 24094 86044 60928 2 0x11 syz-executor 86301 245287 86044 60928 3 0x4000090 kqsel syz-executor 86301 384336 86044 60928 3 0x4000090 fsleep syz-executor 1739 492926 45906 0 2 0x3 syz-executor 35057 40031 1 0 3 0x100083 ttyin getty 54476 438470 0 0 3 0x14200 acct acct 73749 333829 45906 0 2 0x3 syz-executor 41466 299549 45906 0 2 0x3 syz-executor 60309 228191 45906 0 2 0x3 syz-executor 16570 286130 45906 0 2 0x3 syz-executor 86044 212785 45906 0 2 0x3 syz-executor 67729 373403 45906 0 2 0x3 syz-executor 29649 108835 0 0 3 0x14200 bored sosplice 93675 399074 45906 0 2 0x3 syz-executor 45906 371996 70419 0 2 0x2 syz-executor 70419 432744 27466 0 3 0x10008a sigsusp ksh 27466 299800 39731 0 3 0x98 kqread sshd-session 39731 92280 31503 0 3 0x92 kqread sshd-session 31503 318023 1 0 3 0x88 kqread sshd 96530 65903 67474 74 3 0x1100092 bpf pflogd 67474 115160 1 0 3 0x80 sbwait pflogd 36898 133393 40085 73 3 0x1100090 kqread syslogd 40085 107006 1 0 3 0x100082 sbwait syslogd 68701 31262 1 0 3 0x100080 kqread resolvd 2135 279512 25838 77 3 0x100092 kqread dhcpleased 51349 100163 25838 77 3 0x100092 kqread dhcpleased 25838 74306 1 0 3 0x80 kqread dhcpleased 61520 388657 0 0 3 0x14200 pause smr 28014 9480 0 0 2 0x14200 zerothread 62295 437640 0 0 3 0x14200 aiodoned aiodoned 22495 446417 0 0 3 0x14200 syncer update 39012 32649 0 0 3 0x14200 cleaner cleaner 53732 319254 0 0 2 0x14200 reaper 17373 9454 0 0 3 0x14200 pgdaemon pagedaemon 70776 174145 0 0 3 0x14200 bored viomb 50608 135003 0 0 3 0x40014200 acpi0 acpi0 67450 358965 0 0 7 0x40014200 idle1 87910 400438 0 0 3 0x14200 bored softnet7 61001 68154 0 0 3 0x14200 bored softnet6 79828 494272 0 0 3 0x14200 bored softnet5 72558 126976 0 0 3 0x14200 bored softnet4 79403 433275 0 0 3 0x14200 bored softnet3 98992 102835 0 0 3 0x14200 bored softnet2 28386 399959 0 0 3 0x14200 bored softnet1 43274 2802 0 0 3 0x14200 bored softnet0 94828 22564 0 0 3 0x14200 bored systqmp 41270 361029 0 0 3 0x14200 bored systq 94573 353959 0 0 3 0x14200 tmoslp softclockmp 2700 271299 0 0 3 0x40014200 tmoslp softclock 10885 402563 0 0 3 0x40014200 idle0 1 122495 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 82399 (syz-executor) thread 0xffff8000ffff2ce0 (276969) Process 53732 (reaper) thread 0xffff8000ffffc298 (319254) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10264 11250K 12505K 166960K 15661 0 pcb 19 18K 34K 166960K 798 0 rtable 206 12K 12K 166960K 685 0 pf 39 18K 81K 166960K 254 0 ifaddr 40 7K 8K 166960K 191 0 ifgroup 61 2K 2K 166960K 312 0 sysctl 4 1K 9K 166960K 20 0 counters 72 37K 37K 166960K 382 0 ioctlops 0 0K 4K 166960K 2192 0 iov 0 0K 28K 166960K 110 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1567 99K 99K 166960K 4026 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 40 0 VM map 2 1K 1K 166960K 2 0 sem 28 10K 11K 166960K 56 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2057 0 sigio 0 0K 0K 166960K 107 0 proc 72 115K 164K 166960K 1024 0 subproc 72 4K 4K 166960K 166 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 287 0 in_multi 87 6K 7K 166960K 304 0 ether_multi 1 0K 0K 166960K 33 0 mrt 1 0K 0K 166960K 15 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 915 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 235 151K 184K 166960K 19715 0 UVM aobj 48 2K 2K 166960K 49 0 pinsyscall 43 86K 104K 166960K 3401 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 82 0 NDP 14 0K 1K 166960K 136 0 temp 77 8684K 8940K 166960K 92305 0 kqueue 14 22K 32K 166960K 386 0 SYN cache 2 8K 16K 166960K 3 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 120 341 0 338 3 2 1 3 0 8 0 rtentry 176 251 0 175 5 0 5 5 0 8 0 unpcb 144 1846 0 1827 19 17 2 6 0 8 1 syncache 336 7 0 7 3 3 0 1 0 8 0 tcpcb 736 691 0 684 16 15 1 7 0 8 0 arp 128 29 0 20 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 11 0 11 1 1 0 1 0 8 0 inpcb 328 2506 0 2491 28 23 5 15 0 8 3 nd6 144 46 0 29 1 0 1 1 0 8 0 pkpcb 40 52 0 52 5 5 0 1 0 8 0 kcovpl 48 18 0 10 1 0 1 1 0 8 0 ppxss 1192 125 0 124 2 1 1 1 0 8 0 pppxif 1504 10 0 10 6 5 1 1 0 8 1 pffrag 232 4 0 1 1 0 1 1 0 482 0 pffrnode 88 4 0 1 1 0 1 1 0 8 0 pffrent 40 7 0 4 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 24 111 0 41 1 0 1 1 0 8 0 pfstkey 128 111 0 41 3 0 3 3 0 8 0 pfstate 384 111 0 41 7 0 7 7 0 8 0 pfrule 1344 23 0 16 2 1 1 2 0 8 0 rttmr 136 5 0 5 4 3 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1314 0 931 36 11 25 30 0 8 1 art_table 40 1318 0 931 5 1 4 5 0 8 0 art_node 32 250 0 183 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 10 1 0 1 1 0 8 0 semupl 112 6 0 6 3 3 0 1 0 8 0 semapl 112 50 0 24 1 0 1 1 0 8 0 shmpl 112 46 0 1 2 0 2 2 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 5063 0 3538 96 0 96 96 0 8 0 ffsino 296 5063 0 3538 118 0 118 118 0 8 0 nchpl 144 7893 0 6171 65 0 65 65 0 8 0 rtmask 32 15 0 15 4 3 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 31243 0 31243 2 1 1 2 0 8 1 percpumem 16 206 0 155 1 0 1 1 0 8 0 kstatmem 264 204 0 172 3 0 3 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 77078 0 77078 14 12 2 8 1 8 2 plimitpl 152 503 0 485 1 0 1 1 0 8 0 sigapl 424 2357 0 2301 9 2 7 9 0 8 0 knotepl 120 555 0 0 17 0 17 17 0 8 0 kqueuepl 224 926 0 914 9 8 1 5 0 8 0 pipepl 344 354 0 326 6 3 3 6 0 8 0 fdescpl 528 2308 0 2276 3 0 3 3 0 8 0 filepl 160 17765 0 17528 36 20 16 20 0 8 2 lockfpl 104 1556 0 1550 3 2 1 2 0 8 0 lockfspl 48 619 0 613 1 0 1 1 0 8 0 sessionpl 144 36 0 27 1 0 1 1 0 8 0 pgrppl 48 115 0 98 1 0 1 1 0 8 0 ucredpl 104 2370 0 2355 1 0 1 1 0 8 0 zombiepl 144 2800 0 2798 3 2 1 1 0 8 0 processpl 1248 2357 0 2301 6 0 6 6 0 8 0 procpl 656 5243 0 5177 8 1 7 8 0 8 0 sosppl 168 8 0 8 3 2 1 1 0 8 1 sockpl 752 4864 0 4827 75 64 11 22 0 8 6 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 106 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 31 0 0 4 0 4 4 0 8 0 mtagpl 96 60 0 0 2 0 2 2 0 8 0 mbufpl 256 1219 0 0 76 0 76 76 0 8 0 bufpl 280 33579 0 27437 440 0 440 440 0 8 0 anonpl 32 17376 0 0 141 0 141 141 0 246 0 amapchunkpl 152 70458 0 69972 63 32 31 39 0 158 5 amappl16 200 9954 0 9927 113 97 16 41 0 8 8 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 140 0 128 1 0 1 1 0 8 0 amappl13 176 15 0 15 2 2 0 1 0 8 0 amappl12 168 3113 0 3081 4 2 2 3 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 7 0 6 2 1 1 1 0 8 0 amappl9 144 272 0 272 1 1 0 1 0 8 0 amappl8 136 24 0 22 1 0 1 1 0 8 0 amappl7 128 134 0 121 1 0 1 1 0 8 0 amappl6 120 291 0 287 1 0 1 1 0 8 0 amappl5 112 167 0 157 1 0 1 1 0 8 0 amappl4 104 325 0 303 1 0 1 1 0 8 0 amappl3 96 13605 0 13492 5 1 4 4 0 8 0 amappl2 88 815 0 747 2 0 2 2 0 8 0 amappl1 80 17181 0 16576 16 2 14 16 0 8 0 amappl 88 18486 0 18322 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 3 0 2 1 0 1 1 0 8 0 dma256 256 9 0 9 2 2 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 7 0 7 2 2 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 48 0 1 1 0 1 1 0 8 0 uaddrrnd 24 2308 0 2276 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2308 0 2276 1 0 1 1 0 8 0 vmmpekpl 168 18132 0 18081 3 0 3 3 0 8 0 vmmpepl 168 151371 0 149314 153 36 117 123 0 357 8 vmsppl 488 2307 0 2276 6 1 5 5 0 8 0 rwobjpl 80 47403 0 40500 155 1 154 154 0 8 1 pdppl 4096 4623 0 4552 115 42 73 87 0 8 2 pvpl 32 24269 0 0 196 0 196 196 0 265 0 pmappl 256 2307 0 2276 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 380 0 76 9 0 9 9 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff80000164a000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff80002a2a99b8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2a99b8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003a823ae0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805bf842a0,81,fffffd80097fb5b0,ffff80002a2a99b8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bf4f988,ffff80002a2a99b8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bf4f988,ffff80002a2a99b8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bf4f988,ffff80002a2a99b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bf4f988,ffff80002a2a99b8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a2a99b8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a2a99b8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a2a99b8,ffff80003a823e50,ffff80003a823da0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003a823e50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003a823e50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75bb0b28ad10, 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+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 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+0x41e sys/dev/acpi/acpicpu_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5