uvm_fault(0xfffffd806b9f4018, 0xf, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff819aa048 cs 8 rflags 10246 cr2 f cpl 0 rsp ffff800037feee30 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff819aa048 Starting stack trace... panic(ffffffff8334188b) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff800037feed80) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b ktrops(ffff8000ffff2530,ffffffffffffffff,0,80000b1c,fffffd805c5ada20,fffffd80097fb4e0) at ktrops+0x58 ktrcanset sys/kern/kern_ktrace.c:727 [inline] ktrops(ffff8000ffff2530,ffffffffffffffff,0,80000b1c,fffffd805c5ada20,fffffd80097fb4e0) at ktrops+0x58 sys/kern/kern_ktrace.c:570 doktrace(fffffd805c5ada20,4,b1c,0,ffff8000ffff2530) at doktrace+0x6dd ktrsetchildren sys/kern/kern_ktrace.c:595 [inline] doktrace(fffffd805c5ada20,4,b1c,0,ffff8000ffff2530) at doktrace+0x6dd sys/kern/kern_ktrace.c:517 sys_ktrace(ffff8000ffff2530,ffff800037fef190,ffff800037fef0e0) at sys_ktrace+0x11c sys/kern/kern_ktrace.c:558 syscall(ffff800037fef190) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037fef190) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4e81b2b3bb0, count: 249 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 *402606 57184 0 0x2 0 1 syz-executor 260869 58762 0 0x14000 0x40000200 0 softclock proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x70871b33da70, 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(0xfffffd806b9f4018, 0xf, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x70871b33da70, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c453e60 rbx 0 rdx 0 rcx 0xffff80002a2ba2a8 rax 0x2a r8 0xffff80003c453d90 r9 0x1 r10 0xe175dc2a3d951718 r11 0xaf0e92ea8245415d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff814914c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c453de0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=402606 pid=57184 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a296540,0xffff80002a296f90 process=0xffff80003c41e208 user=0xffff80003c44e000, vmspace=0xfffffd806e3981f0 estcpu=36, cpticks=0, pctcpu=0.7, user=0, sys=16, intr=1 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 91594 253574 57184 0 2 0 syz-executor 63848 422647 17818 0 2 0 syz-executor 63848 191126 17818 0 3 0x4000080 fsleep syz-executor 63848 60045 17818 0 3 0x4000080 fsleep syz-executor 66833 415491 43491 0 2 0 syz-executor 66833 272747 43491 0 2 0x4000000 syz-executor 97352 318642 50319 0 2 0 syz-executor 97352 462779 50319 0 2 0x4000000 syz-executor 21655 389838 76047 0 2 0 syz-executor 21655 286541 76047 0 3 0x4000000 sbar syz-executor *57184 402606 9961 0 7 0x2 syz-executor 41632 380031 0 0 3 0x14200 acct acct 93116 201497 1 0 3 0x80 nanoslp init 58601 385383 9961 0 2 0xc82 syz-executor 99598 116848 9961 0 2 0x2 syz-executor 76047 389138 9961 0 2 0xc82 syz-executor 17818 260671 9961 0 2 0xc82 syz-executor 50319 509942 9961 0 2 0xc82 syz-executor 60901 496008 0 0 3 0x14200 bored sosplice 43491 154093 9961 0 2 0xc82 syz-executor 65315 271314 9961 0 2 0x2 syz-executor 9961 236188 72528 0 2 0x2 syz-executor 72528 453530 36089 0 3 0x10008a sigsusp ksh 36089 231328 38690 0 3 0x98 kqread sshd-session 38690 105153 88115 0 3 0x92 kqread sshd-session 88115 343996 1 0 3 0x88 kqread sshd 40328 175877 30126 74 3 0x1100092 bpf pflogd 30126 419031 1 0 3 0x80 sbwait pflogd 97628 316938 50579 73 3 0x1100090 kqread syslogd 50579 487831 1 0 3 0x100082 sbwait syslogd 77114 228198 1 0 3 0x100080 kqread resolvd 55009 487259 35635 77 3 0x100092 kqread dhcpleased 73750 356156 35635 77 3 0x100092 kqread dhcpleased 35635 119683 1 0 3 0x80 kqread dhcpleased 95541 22331 0 0 2 0x14200 smr 3637 334874 0 0 2 0x14200 zerothread 81399 385669 0 0 3 0x14200 aiodoned aiodoned 62755 46902 0 0 3 0x14200 syncer update 29590 215572 0 0 3 0x14200 cleaner cleaner 41914 152812 0 0 3 0x14200 reaper reaper 15101 234613 0 0 3 0x14200 pgdaemon pagedaemon 18965 119746 0 0 3 0x14200 bored viomb 27798 74118 0 0 3 0x40014200 acpi0 acpi0 47109 236148 0 0 3 0x40014200 idle1 3006 378302 0 0 3 0x14200 bored softnet3 89851 453145 0 0 3 0x14200 bored softnet2 24561 421970 0 0 3 0x14200 bored softnet1 50326 346795 0 0 2 0x14200 softnet0 41289 366191 0 0 2 0x14200 systqmp 33269 232828 0 0 3 0x14200 bored systq 37410 170296 0 0 2 0x14200 softclockmp 58762 260869 0 0 7 0x40014200 softclock 76730 514576 0 0 3 0x40014200 idle0 1 23551 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 66833 (syz-executor) thread 0xffff80002a2967d0 (272747) Process 21655 (syz-executor) thread 0xffff8000ffff2530 (286541) Process 65315 (syz-executor) thread 0xffff80002a2bace8 (271314) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10249 11401K 11824K 166960K 17885 0 pcb 17 16K 18K 166960K 725 0 rtable 238 13K 14K 166960K 1021 0 pf 40 18K 81K 166960K 323 0 ifaddr 40 7K 9K 166960K 208 0 ifgroup 59 2K 2K 166960K 356 0 sysctl 4 1K 9K 166960K 41 0 counters 70 37K 38K 166960K 512 0 ioctlops 0 0K 4K 166960K 2181 0 iov 0 0K 28K 166960K 387 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1480 93K 94K 166960K 5147 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 67 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 256 0 dirhash 15 2K 3K 166960K 87 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 228K 166960K 3497 0 sigio 0 0K 0K 166960K 52 0 proc 63 79K 140K 166960K 1243 0 subproc 72 4K 4K 166960K 192 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 547 0 in_multi 81 5K 7K 166960K 297 0 ether_multi 1 0K 0K 166960K 12 0 mrt 0 0K 0K 166960K 17 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 935 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 231 157K 180K 166960K 32898 0 UVM aobj 33 4K 4K 166960K 38 0 pinsyscall 40 80K 106K 166960K 4934 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 169 0 NDP 13 0K 2K 166960K 154 0 temp 78 8696K 8820K 166960K 157551 0 kqueue 13 20K 32K 166960K 652 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 120 310 0 306 3 2 1 3 0 8 0 rtentry 176 315 0 220 6 0 6 6 0 8 0 unpcb 144 2535 0 2518 17 14 3 6 0 8 2 syncache 336 9 0 9 6 5 1 1 0 8 1 tcpqe 32 8 0 8 3 3 0 1 0 8 0 tcpcb 736 1148 0 1143 19 17 2 7 0 8 1 arp 128 57 0 33 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 328 3440 0 3430 24 22 2 7 0 8 0 nd6 144 65 0 46 1 0 1 1 0 8 0 pkpcb 40 21 0 21 6 5 1 1 0 8 1 kcovpl 48 21 0 13 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 182 0 182 3 2 1 1 0 8 1 pppxif 1504 15 0 15 5 5 0 1 0 8 0 pfstscr 40 2 0 2 2 2 0 1 0 8 0 pffrag 232 11 0 6 1 0 1 1 0 482 0 pffrnode 88 11 0 6 1 0 1 1 0 8 0 pffrent 40 53 0 48 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 4 0 3 1 0 1 1 0 8 0 pfanchor 1288 4 0 3 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 145 0 92 1 0 1 1 0 8 0 pfstkey 128 150 0 97 3 0 3 3 0 8 0 pfstate 384 148 0 95 8 0 8 8 0 8 1 pfrule 1344 32 0 24 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1365 0 933 37 7 30 32 0 8 0 art_table 32 1368 0 933 5 0 5 5 0 8 0 art_node 16 299 0 215 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 21 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 251 0 241 1 0 1 1 0 8 0 shmpl 112 35 0 5 1 0 1 1 0 8 0 dirhash 1024 67 0 48 3 0 3 3 0 8 0 dino2pl 256 7704 0 6175 97 0 97 97 0 8 0 ffsino 288 7704 0 6175 110 0 110 110 0 8 0 nchpl 144 12475 0 10748 65 0 65 65 0 8 0 rtmask 32 26 0 26 5 4 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 44547 0 44546 5 4 1 2 0 8 0 percpumem 16 271 0 221 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 228 0 198 3 0 3 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 15 0 15 5 5 0 1 0 8 0 scxspl 216 62743 0 62743 19 18 1 8 1 8 1 plimitpl 152 704 0 688 1 0 1 1 0 8 0 sigapl 424 3796 0 3746 9 2 7 9 0 8 0 knotepl 120 808 0 0 24 0 24 24 0 8 0 kqueuepl 224 1475 0 1466 21 20 1 9 0 8 0 pipepl 336 569 0 542 10 7 3 8 0 8 0 fdescpl 520 3746 0 3716 3 0 3 3 0 8 0 filepl 160 25432 0 25219 33 18 15 21 0 8 2 lockfpl 104 1092 0 1089 2 1 1 2 0 8 0 lockfspl 48 408 0 405 1 0 1 1 0 8 0 sessionpl 144 42 0 34 1 0 1 1 0 8 0 pgrppl 48 173 0 157 1 0 1 1 0 8 0 ucredpl 104 3486 0 3472 1 0 1 1 0 8 0 zombiepl 144 3747 0 3746 1 0 1 1 0 8 0 processpl 1240 3796 0 3746 6 1 5 6 0 8 0 procpl 656 9253 0 9198 9 2 7 8 0 8 0 srpgc 96 27 0 27 4 4 0 1 0 8 0 sosppl 168 18 0 18 6 6 0 1 0 8 0 sockpl 728 6379 0 6348 46 37 9 16 0 8 5 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 137 0 0 17 1 16 17 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 74 0 0 10 0 10 10 0 8 0 mtagpl 96 231 0 0 6 0 6 6 0 8 0 mbufpl 256 1366 0 0 83 0 83 83 0 8 0 bufpl 280 22813 0 16671 441 1 440 440 0 8 1 anonpl 32 13781 0 0 111 0 111 111 0 246 0 amapchunkpl 152 112786 0 112217 49 17 32 36 0 158 3 amappl16 200 10186 0 10084 91 71 20 29 0 8 8 amappl15 192 36 0 36 1 1 0 1 0 8 0 amappl14 184 147 0 136 1 0 1 1 0 8 0 amappl13 176 4 0 4 2 2 0 1 0 8 0 amappl12 168 4594 0 4565 4 2 2 3 0 8 0 amappl11 160 53 0 39 1 0 1 1 0 8 0 amappl10 152 6 0 4 1 0 1 1 0 8 0 amappl9 144 257 0 257 1 1 0 1 0 8 0 amappl8 136 20 0 17 1 0 1 1 0 8 0 amappl7 128 135 0 124 1 0 1 1 0 8 0 amappl6 120 306 0 302 1 0 1 1 0 8 0 amappl5 112 175 0 164 1 0 1 1 0 8 0 amappl4 104 389 0 370 1 0 1 1 0 8 0 amappl3 96 23290 0 23193 5 1 4 4 0 8 0 amappl2 88 869 0 806 2 0 2 2 0 8 0 amappl1 80 23930 0 23352 17 3 14 15 0 8 0 amappl 88 31397 0 31235 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 256 0 256 4 4 0 1 0 8 0 dma64 64 10 0 10 3 3 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 37 0 5 1 0 1 1 0 8 0 uaddrrnd 24 3746 0 3716 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3746 0 3716 1 0 1 1 0 8 0 vmmpekpl 168 27173 0 27110 4 0 4 4 0 8 0 vmmpepl 168 234696 0 232719 146 31 115 115 0 357 10 vmsppl 480 3745 0 3716 6 1 5 5 0 8 0 rwobjpl 72 63131 0 56211 140 4 136 136 0 8 2 pdppl 4096 7500 0 7432 140 66 74 88 0 8 6 pvpl 32 22426 0 0 182 1 181 181 0 265 0 pmappl 256 3745 0 3716 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 555 0 115 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83849ff0) 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(ffffffff8390cb28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:131 [inline] __mp_lock(ffffffff8390cb28) at __mp_lock+0x192 sys/kern/kern_lock.c:162 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8390cb28) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:131 [inline] __mp_lock(ffffffff8390cb28) at __mp_lock+0x199 sys/kern/kern_lock.c:162 __mp_acquire_count(ffffffff8390cb28,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2da sys/kern/kern_synch.c:366 softclock_thread_run(ffffffff837ea978) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:845 softclock_thread(ffff8000ffffe7b0) at softclock_thread+0x10a sys/kern/kern_timeout.c:867 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83849ff0) 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(ffffffff8390cb28) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:131 [inline] __mp_lock(ffffffff8390cb28) at __mp_lock+0x192 sys/kern/kern_lock.c:162 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8390cb28) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:131 [inline] __mp_lock(ffffffff8390cb28) at __mp_lock+0x199 sys/kern/kern_lock.c:162 __mp_acquire_count(ffffffff8390cb28,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2da sys/kern/kern_synch.c:366 softclock_thread_run(ffffffff837ea978) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:845 softclock_thread(ffff8000ffffe7b0) at softclock_thread+0x10a sys/kern/kern_timeout.c:867 end trace frame: 0x0, count: -12 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: 0x70871b33da70, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x70871b33da70, count: -1