uvm_fault(0xfffffd806b7919a8, 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(ffff8000015a8000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff80003a01b9d0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003a01b9d0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3b4e30) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8063d4dda0,1,fffffd80097fb548,ffff80003a01b9d0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b96b538,ffff80003a01b9d0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b96b538,ffff80003a01b9d0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b96b538,ffff80003a01b9d0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b96b538,ffff80003a01b9d0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003a01b9d0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003a01b9d0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003a01b9d0,ffff80002a3b51a0,ffff80002a3b50f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3b51a0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3b51a0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72612fe0d0c0, 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(0xfffffd806b7919a8, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff8000015a8000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff80003a01b9d0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003a01b9d0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3b4e30) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8063d4dda0,1,fffffd80097fb548,ffff80003a01b9d0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b96b538,ffff80003a01b9d0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b96b538,ffff80003a01b9d0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b96b538,ffff80003a01b9d0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b96b538,ffff80003a01b9d0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003a01b9d0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003a01b9d0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003a01b9d0,ffff80002a3b51a0,ffff80002a3b50f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3b51a0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3b51a0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72612fe0d0c0, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80002a3b4d60 rbx 0xffffffff81a96dc0 dtclose rdx 0 rcx 0xffff80003a01b9d0 rax 0xffffffff838468e8 dt_prov_syscall r8 0xffffffffffffffff r9 0 r10 0xbd50be5d19236c56 r11 0x27e050250acd211a r12 0xffff80000006e200 r13 0 r14 0 r15 0xffff8000015adb00 rip 0xffffffff81a971a0 dt_ioctl_record_stop+0xf0 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff80002a3b4d30 ss 0x10 dt_ioctl_record_stop+0xf0: movq 0(%r14),%r12 ddb{0}> show proc PROC (syz-executor) tid=332437 pid=45117 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003a01b9d0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff8000ffff2010,0xffff80002a2a94a8 process=0xffff80003a0153a0 user=0xffff80002a3b0000, vmspace=0xfffffd806b7919a8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 49657 43938 15801 0 2 0 syz-executor 49657 24743 15801 0 2 0x4000000 syz-executor 39261 337739 67069 0 2 0 syz-executor 39261 225762 67069 0 2 0x4000000 syz-executor 86665 300800 47465 0 2 0 syz-executor 86665 93301 47465 0 3 0x4000080 fsleep syz-executor 86665 413954 47465 0 3 0x4000080 fsleep syz-executor 89408 287563 31891 0 2 0 syz-executor 89408 5908 31891 0 3 0x4000080 kqsel syz-executor 89408 41861 31891 0 3 0x4000080 kqsel syz-executor 33610 217291 5829 0 3 0x80 nanoslp syz-executor 33610 377987 5829 0 3 0x4000080 lockf syz-executor 33610 233158 5829 0 3 0x4000080 fsleep syz-executor 67069 125774 49847 0 2 0x2 syz-executor 99112 417963 1 0 3 0x100083 ttyin getty 28394 268488 49847 0 3 0x82 piperd syz-executor 47465 34227 49847 0 3 0x82 nanoslp syz-executor 15801 202302 49847 0 3 0x82 nanoslp syz-executor 46611 64049 0 0 3 0x14200 bored sosplice 31891 490067 49847 0 3 0x82 nanoslp syz-executor 25507 471379 49847 0 3 0x82 nanoslp syz-executor 46228 272420 49847 0 3 0x82 nanoslp syz-executor 5829 163759 49847 0 2 0x2 syz-executor 49847 186617 23999 0 2 0x2 syz-executor 23999 394265 57207 0 3 0x10008a sigsusp ksh 57207 122481 56193 0 3 0x98 kqread sshd-session 56193 516022 29500 0 3 0x92 kqread sshd-session 29500 510062 1 0 3 0x88 kqread sshd 38560 422887 8145 74 3 0x1100092 bpf pflogd 8145 373614 1 0 3 0x80 sbwait pflogd 11831 382120 49942 73 3 0x1100090 kqread syslogd 49942 405504 1 0 3 0x100082 sbwait syslogd 62491 141309 1 0 3 0x100080 kqread resolvd 69817 260827 87416 77 3 0x100092 kqread dhcpleased 30127 494215 87416 77 3 0x100092 kqread dhcpleased 87416 204943 1 0 3 0x80 kqread dhcpleased 48428 257450 0 0 3 0x14200 bored smr 90816 518403 0 0 2 0x14200 zerothread 90518 453465 0 0 3 0x14200 aiodoned aiodoned 61486 142247 0 0 3 0x14200 syncer update 19314 254993 0 0 3 0x14200 cleaner cleaner 5361 75543 0 0 3 0x14200 reaper reaper 38527 438200 0 0 3 0x14200 pgdaemon pagedaemon 30850 91872 0 0 3 0x14200 bored viomb 9675 376470 0 0 3 0x40014200 acpi0 acpi0 53098 123030 0 0 7 0x40014200 idle1 93848 329177 0 0 3 0x14200 bored softnet7 71389 29002 0 0 3 0x14200 bored softnet6 62557 20187 0 0 3 0x14200 bored softnet5 22557 434643 0 0 3 0x14200 bored softnet4 72363 29570 0 0 3 0x14200 bored softnet3 87145 386608 0 0 3 0x14200 bored softnet2 62464 505700 0 0 3 0x14200 bored softnet1 42898 158325 0 0 3 0x14200 bored softnet0 96953 282323 0 0 3 0x14200 smrbar systqmp 73658 100607 0 0 3 0x14200 bored systq 60702 382759 0 0 3 0x14200 tmoslp softclockmp 78024 499176 0 0 3 0x40014200 tmoslp softclock 38947 293604 0 0 3 0x40014200 idle0 1 245387 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 96953 (systqmp) thread 0xffff8000ffffe7b0 (282323) shared rwlock systqmp r = 0 (0xffffffff837d8b78) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10213 11147K 11746K 166960K 12222 0 pcb 19 15K 17K 166960K 343 0 rtable 157 7K 8K 166960K 531 0 pf 31 17K 21K 166960K 150 0 ifaddr 33 5K 8K 166960K 104 0 ifgroup 48 2K 3K 166960K 168 0 sysctl 4 1K 9K 166960K 13 0 counters 64 36K 38K 166960K 168 0 ioctlops 0 0K 4K 166960K 1886 0 iov 0 0K 28K 166960K 147 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1425 90K 90K 166960K 2176 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 33 0 dirhash 12 2K 3K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 1074 0 sigio 0 0K 0K 166960K 16 0 proc 73 115K 196K 166960K 771 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 293 0 in_multi 57 4K 7K 166960K 182 0 ether_multi 1 0K 0K 166960K 10 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 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 617 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 250 157K 167K 166960K 11133 0 UVM aobj 5 4K 4K 166960K 6 0 pinsyscall 42 84K 107K 166960K 2288 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 117 0 NDP 10 0K 1K 166960K 72 0 temp 78 8683K 8763K 166960K 44067 0 kqueue 15 24K 28K 166960K 190 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 120 202 0 199 4 1 3 3 0 8 2 rtentry 176 183 0 123 5 0 5 5 0 8 0 unpcb 144 893 0 875 6 4 2 6 0 8 1 syncache 336 7 0 7 2 1 1 1 0 8 1 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpcb 736 252 0 244 5 1 4 4 0 8 3 arp 128 14 0 7 1 0 1 1 0 8 0 inpcb 328 1157 0 1140 7 0 7 7 0 8 5 nd6 144 29 0 17 1 0 1 1 0 8 0 pkpcb 40 71 0 71 2 1 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1192 36 0 35 1 0 1 1 0 8 0 pppxif 1504 6 0 6 1 0 1 1 0 8 1 pffrag 232 5 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 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 pfanchor 1288 2 0 2 1 1 0 1 0 8 0 pftag 88 2 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 73 0 13 1 0 1 1 0 8 0 pfstkey 128 73 0 13 2 0 2 2 0 8 0 pfstate 384 73 0 13 6 0 6 6 0 8 0 pfrule 1344 30 0 25 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 724 0 358 29 2 27 28 0 8 3 art_table 40 726 0 358 5 0 5 5 0 8 0 art_node 32 181 0 120 1 0 1 1 0 8 0 sysvmsgpl 40 40 0 0 1 0 1 1 0 8 0 semapl 112 30 0 20 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3426 0 1912 96 0 96 96 0 8 0 ffsino 296 3426 0 1912 118 0 118 118 0 8 0 nchpl 144 4881 0 3177 64 0 64 64 0 8 0 rtmask 32 6 0 6 2 1 1 1 0 8 1 uvmvnodes 80 3836 0 0 79 0 79 79 0 8 0 vnodes 216 3836 0 0 214 0 214 214 0 8 0 namei 1024 17676 0 17676 3 1 2 2 0 8 2 percpumem 16 99 0 52 1 0 1 1 0 8 0 kstatmem 264 98 0 76 3 0 3 3 0 8 1 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 36812 0 36812 11 7 4 8 1 8 4 plimitpl 152 289 0 272 1 0 1 1 0 8 0 sigapl 424 1379 0 1325 7 0 7 7 0 8 0 knotepl 120 525 0 0 16 0 16 16 0 8 0 kqueuepl 224 340 0 327 2 0 2 2 0 8 1 pipepl 344 254 0 227 8 3 5 6 0 8 2 fdescpl 528 1353 0 1322 3 0 3 3 0 8 0 filepl 160 9232 0 9000 22 1 21 21 0 8 7 lockfpl 104 624 0 618 1 0 1 1 0 8 0 lockfspl 48 185 0 180 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 114 0 97 1 0 1 1 0 8 0 ucredpl 104 1427 0 1414 1 0 1 1 0 8 0 zombiepl 144 1327 0 1325 1 0 1 1 0 8 0 processpl 1248 1379 0 1325 5 0 5 5 0 8 0 procpl 656 2886 0 2824 7 0 7 7 0 8 0 sosppl 168 7 0 7 2 1 1 1 0 8 1 sockpl 752 2348 0 2310 23 6 17 17 0 8 12 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 26 0 0 4 0 4 4 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 2530 0 0 158 0 158 158 0 8 0 bufpl 280 16583 0 10441 439 0 439 439 0 8 0 anonpl 32 11194 0 0 91 0 91 91 0 246 0 amapchunkpl 152 36941 0 36365 36 4 32 32 0 158 8 amappl16 200 5923 0 5867 51 33 18 27 0 8 8 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 130 0 118 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 2067 0 2036 4 1 3 3 0 8 1 amappl11 160 83 0 69 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 1 0 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 44 0 40 1 0 1 1 0 8 0 amappl7 128 122 0 110 1 0 1 1 0 8 0 amappl6 120 217 0 214 1 0 1 1 0 8 0 amappl5 112 152 0 142 1 0 1 1 0 8 0 amappl4 104 319 0 299 1 0 1 1 0 8 0 amappl3 96 7425 0 7310 5 1 4 4 0 8 0 amappl2 88 730 0 665 2 0 2 2 0 8 0 amappl1 80 13433 0 12838 17 2 15 15 0 8 1 amappl 88 10187 0 10011 5 0 5 5 0 92 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 7 0 7 2 1 1 1 0 8 1 dma128 128 253 0 253 1 1 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 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1353 0 1322 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1353 0 1322 1 0 1 1 0 8 0 vmmpekpl 168 12253 0 12199 3 0 3 3 0 8 0 vmmpepl 168 92805 0 90787 114 5 109 110 0 357 14 vmsppl 488 1352 0 1322 6 1 5 5 0 8 0 rwobjpl 80 31215 0 26405 99 0 99 99 0 8 0 pdppl 4096 2714 0 2644 112 40 72 88 0 8 2 pvpl 32 21322 0 0 172 0 172 172 0 265 0 pmappl 256 1352 0 1322 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 439 0 47 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff8000015a8000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,1,2000,ffff80003a01b9d0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80003a01b9d0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3b4e30) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8063d4dda0,1,fffffd80097fb548,ffff80003a01b9d0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b96b538,ffff80003a01b9d0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b96b538,ffff80003a01b9d0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b96b538,ffff80003a01b9d0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b96b538,ffff80003a01b9d0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003a01b9d0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003a01b9d0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003a01b9d0,ffff80002a3b51a0,ffff80002a3b50f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3b51a0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3b51a0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72612fe0d0c0, 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