uvm_fault(0xfffffd806c228018, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8148c3a8 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003c410d80 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8148c3a8 Starting stack trace... panic(ffffffff833b9545) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c410cd0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001519000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(21e5f,1,2000,ffff80002a270548) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(21e5f,1,2000,ffff80002a270548) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff80003c410e80) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e57fa30,1,fffffd80097fb5b0,ffff80002a270548) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c6dd3e0,ffff80002a270548) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c6dd3e0,ffff80002a270548) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c6dd3e0,ffff80002a270548) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c6dd3e0,ffff80002a270548) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a270548) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a270548,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a270548,ffff80003c4111f0,ffff80003c411140) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c4111f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4111f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75a1cd81e0e0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *217235 5099 0 0x100002 0 1 sh 413192 57364 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x762b0ba2bb00, count: 14 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c228018, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x762b0ba2bb00, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800035beae80 rbx 0 rdx 0 rcx 0xffff80003c40bcb0 rax 0x2a r8 0xffff800035beadb0 r9 0x1 r10 0xec199128db4edc10 r11 0x9a9cfce3bb28123d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81cdd4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff800035beae00 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (sh) tid=217235 pid=5099 tcnt=1 stat=onproc flags process=100002 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a270548,0xffffffff83933a08 process=0xffff80003c449d10 user=0xffff800035be5000, vmspace=0xfffffd806c2285d0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND * 5099 217235 27059 0 7 0x100002 sh 39826 493474 76020 0 2 0 syz-executor 39826 414678 76020 0 3 0x4000080 fsleep syz-executor 39826 151668 76020 0 3 0x4000080 fsleep syz-executor 27059 352709 52624 0 3 0x82 wait syz-executor 9590 264140 1 0 3 0x100083 ttyin getty 64268 355870 0 0 3 0x14280 nfsidl nfsio 41158 135494 0 0 3 0x14200 acct acct 41226 66593 0 0 3 0x14200 bored sosplice 76020 10423 52624 0 3 0x82 nanoslp syz-executor 42535 508195 52624 0 3 0x2 biowait syz-executor 65545 485262 52624 0 3 0x82 piperd syz-executor 57576 150142 52624 0 3 0x82 nanoslp syz-executor 15838 88565 52624 0 3 0x82 piperd syz-executor 83959 267608 52624 0 2 0x2 syz-executor 52624 147477 88894 0 3 0x82 wait syz-executor 88894 28453 47079 0 3 0x10008a sigsusp ksh 47079 358157 45995 0 3 0x98 kqread sshd-session 45995 339877 33216 0 3 0x92 kqread sshd-session 33216 92909 1 0 3 0x88 kqread sshd 41400 422474 49288 74 3 0x1100092 bpf pflogd 49288 246828 1 0 3 0x80 sbwait pflogd 17391 126556 87313 73 3 0x1100090 kqread syslogd 87313 500048 1 0 3 0x100082 sbwait syslogd 9800 322597 1 0 3 0x100080 kqread resolvd 30978 300846 0 0 3 0x14200 bored smr 45324 210551 0 0 2 0x14200 zerothread 96549 227617 0 0 3 0x14200 aiodoned aiodoned 89579 38676 0 0 3 0x14200 syncer update 81363 278615 0 0 3 0x14200 cleaner cleaner 57364 413192 0 0 7 0x14200 reaper 34430 375550 0 0 3 0x14200 pgdaemon pagedaemon 70264 1547 0 0 3 0x14200 bored viomb 10440 110860 0 0 3 0x40014200 acpi0 acpi0 5362 396110 0 0 3 0x40014200 idle1 80531 472153 0 0 3 0x14200 bored softnet1 31329 344225 0 0 3 0x14200 netlock softnet0 42141 182461 0 0 3 0x14200 smrbar systqmp 83509 153212 0 0 3 0x14200 bored systq 37021 374112 0 0 3 0x14200 tmoslp softclockmp 60410 181305 0 0 3 0x40014200 tmoslp softclock 60675 70837 0 0 3 0x40014200 idle0 1 378122 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 42535 (syz-executor) thread 0xffff80002a271a08 (508195) Process 57364 (reaper) thread 0xffff8000ffffd760 (413192) Process 42141 (systqmp) thread 0xffff8000ffffe298 (182461) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 11134K 12500K 166960K 14368 0 pcb 17 18K 26K 166960K 890 0 rtable 137 11K 13K 166960K 1448 0 pf 32 17K 25K 166960K 383 0 ifaddr 23 3K 8K 166960K 264 0 ifgroup 47 2K 2K 166960K 411 0 sysctl 4 1K 9K 166960K 38 0 counters 64 36K 38K 166960K 398 0 ioctlops 0 0K 4K 166960K 2251 0 iov 0 0K 28K 166960K 214 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1484 93K 94K 166960K 4056 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 616K 620K 166960K 20 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 173 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 13 45K 240K 166960K 3067 0 sigio 1 0K 0K 166960K 126 0 proc 67 83K 147K 166960K 1459 0 subproc 72 4K 4K 166960K 282 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 331 0 in_multi 26 2K 7K 166960K 461 0 ether_multi 1 0K 0K 166960K 26 0 mrt 5 0K 0K 166960K 39 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 1045 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 183 135K 186K 166960K 28298 0 UVM aobj 114 8K 10K 166960K 122 0 pinsyscall 32 64K 102K 166960K 4759 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 196 0 NDP 10 0K 2K 166960K 188 0 temp 82 8656K 8730K 166960K 124040 0 kqueue 7 12K 35K 166960K 582 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> 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 120 288 0 287 2 1 1 2 0 8 0 rtentry 176 428 0 391 6 0 6 6 0 8 0 unpcb 144 2484 0 2474 25 24 1 7 0 8 0 syncache 336 13 0 13 6 6 0 1 0 8 0 tcpcb 736 1027 0 1021 23 22 1 10 0 8 0 arp 136 70 0 61 1 0 1 1 0 8 0 inpcb 328 3421 0 3415 39 37 2 10 0 8 0 nd6 152 94 0 89 1 0 1 1 0 8 0 pkpcb 40 62 0 62 5 5 0 1 0 8 0 kcovpl 48 31 0 23 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 115 0 115 5 5 0 1 0 8 0 pppxif 1504 15 0 15 6 6 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 26 0 22 1 0 1 1 0 482 0 pffrnode 88 20 0 16 1 0 1 1 0 8 0 pffrent 40 43 0 39 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 3 0 1 2 1 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 137 0 104 1 0 1 1 0 8 0 pfstkey 128 139 0 106 2 0 2 2 0 8 0 pfstate 384 137 0 105 6 1 5 6 0 8 0 pfrule 1344 28 0 23 2 1 1 2 0 8 0 rttmr 136 10 0 9 5 4 1 1 0 8 0 art_heap8 4096 6 0 1 6 1 5 6 0 8 0 art_heap4 256 2152 0 1962 33 16 17 30 0 8 0 art_table 40 2158 0 1963 5 0 5 5 0 8 0 art_node 32 425 0 385 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 5 2 1 1 1 0 8 0 semapl 112 168 0 158 1 0 1 1 0 8 0 shmpl 112 119 0 8 4 0 4 4 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 6830 0 5276 98 0 98 98 0 8 0 ffsino 296 6830 0 5276 120 0 120 120 0 8 0 nchpl 144 10811 0 10184 65 41 24 64 0 8 0 rtmask 32 24 0 24 7 7 0 1 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 39337 0 39336 1 0 1 1 0 8 0 percpumem 16 214 0 167 1 0 1 1 0 8 0 kstatmem 264 258 0 234 3 0 3 3 0 8 0 scsiplug 72 3 0 3 2 2 0 1 0 8 0 scxspl 216 76493 0 76492 12 11 1 8 1 8 0 plimitpl 152 641 0 624 1 0 1 1 0 8 0 sigapl 424 3293 0 3250 8 2 6 7 0 8 0 knotepl 120 741 0 0 23 0 23 23 0 8 0 kqueuepl 224 1391 0 1385 20 19 1 5 0 8 0 pipepl 344 466 0 439 10 7 3 9 0 8 0 fdescpl 528 3265 0 3241 3 0 3 3 0 8 0 filepl 160 22561 0 22368 43 33 10 20 0 8 0 lockfpl 104 830 0 829 1 0 1 1 0 8 0 lockfspl 48 330 0 329 1 0 1 1 0 8 0 sessionpl 144 56 0 48 1 0 1 1 0 8 0 pgrppl 48 132 0 116 1 0 1 1 0 8 0 ucredpl 104 3582 0 3571 1 0 1 1 0 8 0 zombiepl 144 4010 0 4008 1 0 1 1 0 8 0 processpl 1232 3293 0 3250 7 2 5 5 0 8 0 procpl 664 8060 0 8015 8 2 6 7 0 8 0 sosppl 168 15 0 15 2 2 0 1 0 8 0 sockpl 752 6372 0 6355 93 90 3 24 0 8 0 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 127 0 0 16 0 16 16 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 49 0 0 6 0 6 6 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 309 0 0 20 0 20 20 0 8 0 bufpl 280 31863 0 25726 439 0 439 439 0 8 0 anonpl 32 13323 0 0 108 0 108 108 0 246 0 amapchunkpl 152 95795 0 95426 58 39 19 33 0 158 0 amappl16 200 11202 0 11179 87 80 7 28 0 8 0 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 7 0 7 2 2 0 1 0 8 0 amappl13 176 693 0 690 1 0 1 1 0 8 0 amappl12 168 3785 0 3753 3 0 3 3 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 45 0 37 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 55 0 50 1 0 1 1 0 8 0 amappl7 128 190 0 188 1 0 1 1 0 8 0 amappl6 120 564 0 552 1 0 1 1 0 8 0 amappl5 112 83 0 74 1 0 1 1 0 8 0 amappl4 104 571 0 541 1 0 1 1 0 8 0 amappl3 96 17473 0 17408 4 1 3 3 0 8 0 amappl2 88 3355 0 3298 3 1 2 3 0 8 0 amappl1 80 23798 0 23313 18 4 14 16 0 8 0 amappl 88 26713 0 26589 5 0 5 5 0 92 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 dma65536 65536 3 0 3 2 2 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma8192 8192 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 7 0 7 2 2 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 9 0 9 4 3 1 1 0 8 1 dma32 32 9 0 9 3 3 0 1 0 8 0 dma16 16 22 0 21 1 0 1 1 0 8 0 aobjpl 72 121 0 8 3 0 3 3 0 8 0 uaddrrnd 24 3265 0 3241 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3265 0 3241 1 0 1 1 0 8 0 vmmpekpl 168 27248 0 27203 3 0 3 3 0 8 0 vmmpepl 168 212978 0 211530 130 46 84 114 0 357 0 vmsppl 488 3264 0 3241 5 1 4 5 0 8 0 rwobjpl 80 62706 0 55905 150 0 150 150 0 8 0 pdppl 4096 6538 0 6482 126 64 62 84 0 8 6 pvpl 32 22250 0 0 179 0 179 179 0 265 0 pmappl 256 3264 0 3241 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 355 0 117 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83843ff0) 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 __mp_lock(ffffffff839a8668) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a8668) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a243f80,ffff80000006ac00) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff839a8668) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a8668) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2440e0,ffff80000007aa80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff839a8668) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a8668) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 mtx_enter(ffffffff8381fe58) at mtx_enter+0xf sys/kern/kern_lock.c:250 end trace frame: 0xffff80002a2443f0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83843ff0) 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 __mp_lock(ffffffff839a8668) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a8668) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a243f80,ffff80000006ac00) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff839a8668) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a8668) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2440e0,ffff80000007aa80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff839a8668) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839a8668) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 mtx_enter(ffffffff8381fe58) at mtx_enter+0xf sys/kern/kern_lock.c:250 reaper(ffff8000ffffd760) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x762b0ba2bb00, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x762b0ba2bb00, count: -1