uvm_fault(0xfffffd806ef0d788, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8212c730 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a39a460 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8212c730 Starting stack trace... panic(ffffffff8333b44f) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a39a3b0) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001675000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(31e5f,81,2000,ffff80003c017238) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff80003c017238) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a39a560) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806e146a38,81,fffffd80097fb5b0,ffff80003c017238) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805efdb5c0,ffff80003c017238) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805efdb5c0,ffff80003c017238) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805efdb5c0,ffff80003c017238) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd805efdb5c0,ffff80003c017238) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c017238) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c017238,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c017238,ffff80002a39a8d0,ffff80002a39a820) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a39a8d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a39a8d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70d73597c7c0, 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 406184 56685 0 0 0 0 syz-executor *137240 56867 0 0 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x712786f70140, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806ef0d788, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x712786f70140, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a26c2d0 rbx 0 rdx 0 rcx 0xffff80002a297730 rax 0x2a r8 0xffff80002a26c200 r9 0x1 r10 0xdcd2b37064426df9 r11 0xcae4b99177469aa6 r12 0 r13 0xffffffff810f2f18 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff8152a4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a26c250 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=137240 pid=56867 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a296540,0xffff80002a296030 process=0xffff80003c43abc0 user=0xffff80002a267000, vmspace=0xfffffd806c212d38 estcpu=36, cpticks=5, pctcpu=0.0, user=3, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36118 409932 21660 0 2 0 syz-executor 56685 406184 8417 0 7 0 syz-executor 56685 462822 8417 0 2 0x4000000 syz-executor 49801 402145 36452 0 2 0 syz-executor 49801 446875 36452 0 2 0x4000000 syz-executor 49421 138131 56035 0 2 0x101004 sh *56867 137240 90711 0 7 0 syz-executor 56867 376069 90711 0 3 0x4000080 ttyout syz-executor 56035 239362 48094 0 3 0x10008a sigsusp sh 48094 81419 92201 0 3 0x82 wait syz-executor 74837 393203 0 0 3 0x14280 nfsidl nfsio 8267 396870 0 0 3 0x14280 nfsidl nfsio 57488 425827 0 0 3 0x14280 nfsidl nfsio 90737 158271 0 0 3 0x14280 nfsidl nfsio 51008 62357 0 0 3 0x14280 nfsidl nfsio 21257 243600 0 0 3 0x14280 nfsidl nfsio 33090 302269 0 0 3 0x14280 nfsidl nfsio 84178 73656 0 0 3 0x14280 nfsidl nfsio 81727 419013 0 0 3 0x14280 nfsidl nfsio 4034 127416 0 0 3 0x14280 nfsidl nfsio 64158 369104 0 0 3 0x14280 nfsidl nfsio 38700 172741 0 0 3 0x14280 nfsidl nfsio 35487 148744 0 0 3 0x14280 nfsidl nfsio 58610 167611 0 0 3 0x14280 nfsidl nfsio 28824 405223 0 0 3 0x14280 nfsidl nfsio 93622 179924 0 0 3 0x14280 nfsidl nfsio 95870 512840 0 0 3 0x14280 nfsidl nfsio 7950 193948 0 0 3 0x14280 nfsidl nfsio 90649 431186 0 0 3 0x14280 nfsidl nfsio 56284 444657 0 0 3 0x14280 nfsidl nfsio 51913 228387 92201 0 2 0x2 syz-executor 21660 114677 92201 0 3 0x82 nanoslp syz-executor 14581 120393 92201 0 3 0x82 wait syz-executor 90711 287578 92201 0 3 0x82 nanoslp syz-executor 28965 483027 1 0 3 0x100083 ttyin getty 9161 228112 0 0 3 0x14200 bored sosplice 36452 701 92201 0 3 0x82 nanoslp syz-executor 28761 142787 92201 0 2 0x3 syz-executor 8417 80683 92201 0 3 0x82 nanoslp syz-executor 92201 46154 83640 0 3 0x82 kqread syz-executor 83640 330167 7591 0 3 0x10008a sigsusp ksh 7591 402697 28692 0 3 0x98 kqread sshd-session 28692 77511 65902 0 3 0x92 kqread sshd-session 65902 129130 1 0 3 0x88 kqread sshd 10998 225939 25549 74 3 0x1100092 bpf pflogd 25549 467706 1 0 3 0x80 sbwait pflogd 51697 17739 84227 73 3 0x1100090 kqread syslogd 84227 362687 1 0 3 0x100082 sbwait syslogd 93114 282502 1 0 3 0x100080 kqread resolvd 67401 219125 49387 77 3 0x100092 kqread dhcpleased 55252 489935 49387 77 3 0x100092 kqread dhcpleased 49387 402718 1 0 3 0x80 kqread dhcpleased 86057 350034 0 0 3 0x14200 bored smr 57317 94640 0 0 2 0x14200 zerothread 9792 339044 0 0 3 0x14200 aiodoned aiodoned 63001 224709 0 0 3 0x14200 syncer update 63913 5310 0 0 3 0x14200 cleaner cleaner 1983 122807 0 0 3 0x14200 reaper reaper 36867 397501 0 0 3 0x14200 pgdaemon pagedaemon 40300 139346 0 0 3 0x14200 bored viomb 29013 511242 0 0 3 0x40014200 acpi0 acpi0 10435 43854 0 0 3 0x40014200 idle1 83000 11841 0 0 3 0x14200 bored softnet3 18888 375391 0 0 3 0x14200 bored softnet2 1504 36335 0 0 3 0x14200 bored softnet1 81055 368319 0 0 3 0x14200 netlock softnet0 89258 516997 0 0 2 0x40014200 systqmp 78682 419228 0 0 3 0x14200 bored systq 4456 490745 0 0 3 0x14200 tmoslp softclockmp 69787 92823 0 0 3 0x40014200 tmoslp softclock 38125 463393 0 0 3 0x40014200 idle0 1 332071 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 36118 (syz-executor) thread 0xffff80003c016fa8 (409932) Process 49801 (syz-executor) thread 0xffff80003c016048 (446875) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10252 11076K 12460K 166960K 15365 0 pcb 17 18K 20K 166960K 1119 0 rtable 201 13K 13K 166960K 1050 0 pf 43 19K 67487K 166960K 457 0 ifaddr 35 7K 9K 166960K 235 0 ifgroup 60 2K 3K 166960K 450 0 sysctl 4 1K 9K 166960K 76 0 counters 70 37K 38K 166960K 432 0 ioctlops 0 0K 4K 166960K 2304 0 iov 0 0K 16K 166960K 476 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1521 96K 96K 166960K 5062 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 40K 48K 166960K 68 0 VM map 2 1K 1K 166960K 2 0 sem 24 21K 31K 166960K 41 0 dirhash 15 2K 3K 166960K 78 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 4185 0 sigio 0 0K 0K 166960K 101 0 proc 72 91K 128K 166960K 1219 0 subproc 72 4K 4K 166960K 138 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 771 0 in_multi 56 4K 7K 166960K 274 0 ether_multi 1 0K 0K 166960K 31 0 mrt 1 0K 0K 166960K 24 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 1 0K 1K 166960K 1216 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 238 171K 185K 166960K 39139 0 UVM aobj 153 4K 6K 166960K 171 0 pinsyscall 44 88K 108K 166960K 5441 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 358 0 NDP 13 0K 2K 166960K 164 0 temp 86 8696K 8819K 166960K 218804 0 kqueue 13 20K 31K 166960K 754 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 120 482 0 479 6 5 1 3 0 8 0 rtentry 176 279 0 204 6 0 6 6 0 8 0 unpcb 144 2832 0 2813 22 21 1 6 0 8 0 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpqe 32 8 0 8 1 1 0 1 0 8 0 tcpcb 808 1564 0 1557 38 31 7 8 0 8 6 arp 128 48 0 29 1 0 1 1 0 8 0 inpcb 384 4864 0 4853 52 44 8 15 0 8 6 nd6 144 47 0 31 1 0 1 1 0 8 0 pkpcb 40 41 0 41 9 8 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 125 0 125 5 5 0 1 0 8 0 pppxif 1504 30 0 30 10 10 0 1 0 8 0 pffrag 232 17 0 14 1 0 1 1 0 482 0 pffrnode 88 17 0 14 1 0 1 1 0 8 0 pffrent 40 42 0 38 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 pfrktable 1344 2 0 0 1 0 1 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 281 0 207 1 0 1 1 0 8 0 pfstkey 128 281 0 207 4 1 3 4 0 8 0 pfstate 384 281 0 207 12 1 11 12 0 8 1 pfrule 1344 36 0 25 3 2 1 2 0 8 0 rttmr 136 5 0 5 4 4 0 1 0 8 0 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 1277 0 953 35 12 23 29 0 8 1 art_table 32 1282 0 953 4 0 4 4 0 8 0 art_node 16 258 0 198 1 0 1 1 0 8 0 sysvmsgpl 40 33 0 25 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 31 0 9 1 0 1 1 0 8 0 shmpl 112 168 0 18 5 0 5 5 0 8 0 dirhash 1024 61 0 42 3 0 3 3 0 8 0 dino2pl 256 9699 0 8181 96 0 96 96 0 8 0 ffsino 288 9699 0 8181 110 0 110 110 0 8 0 nchpl 144 15418 0 13707 65 1 64 64 0 8 0 rtmask 32 18 0 18 7 7 0 1 0 8 0 uvmvnodes 80 4041 0 0 83 0 83 83 0 8 0 vnodes 216 4041 0 0 225 0 225 225 0 8 0 namei 1024 59702 0 59701 3 2 1 2 0 8 0 percpumem 16 231 0 181 1 0 1 1 0 8 0 kstatmem 264 274 0 244 3 0 3 3 0 8 0 scsiplug 72 11 0 11 7 6 1 1 0 8 1 scxspl 216 46985 0 46985 17 16 1 8 1 8 1 plimitpl 152 1108 0 1091 1 0 1 1 0 8 0 sigapl 424 4501 0 4430 12 3 9 9 0 8 0 knotepl 120 646 0 0 18 0 18 18 0 8 0 kqueuepl 224 1578 0 1568 15 14 1 5 0 8 0 pipepl 336 792 0 764 18 12 6 8 0 8 3 fdescpl 520 4431 0 4399 3 0 3 3 0 8 0 filepl 160 35579 0 35356 45 31 14 19 0 8 0 lockfpl 104 1625 0 1623 5 4 1 2 0 8 0 lockfspl 48 530 0 528 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 232 0 215 1 0 1 1 0 8 0 ucredpl 104 6638 0 6624 1 0 1 1 0 8 0 zombiepl 144 5475 0 5473 3 2 1 1 0 8 0 processpl 1240 4501 0 4430 7 1 6 6 0 8 0 procpl 656 11164 0 11090 10 2 8 8 0 8 0 srpgc 96 21 0 21 7 6 1 1 0 8 1 sosppl 168 63 0 63 8 8 0 1 0 8 0 sockpl 728 8355 0 8322 65 56 9 16 0 8 6 mcl64k 65536 6 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 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 46 0 0 5 0 5 5 0 8 0 mtagpl 96 21 0 0 1 0 1 1 0 8 0 mbufpl 256 1249 0 0 73 0 73 73 0 8 0 bufpl 280 14659 0 8517 439 0 439 439 0 8 0 anonpl 32 18057 0 0 145 0 145 145 0 246 0 amapchunkpl 152 134638 0 134054 80 46 34 40 0 158 6 amappl16 200 9329 0 9005 51 22 29 30 0 8 0 amappl15 192 3 0 3 2 2 0 1 0 8 0 amappl14 184 132 0 120 1 0 1 1 0 8 0 amappl13 176 7 0 7 2 2 0 1 0 8 0 amappl12 168 5186 0 5154 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 1 0 1 0 8 0 amappl9 144 246 0 246 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 127 0 114 1 0 1 1 0 8 0 amappl6 120 258 0 253 1 0 1 1 0 8 0 amappl5 112 157 0 145 1 0 1 1 0 8 0 amappl4 104 349 0 327 1 0 1 1 0 8 0 amappl3 96 28147 0 28048 4 0 4 4 0 8 0 amappl2 88 775 0 709 2 0 2 2 0 8 0 amappl1 80 25864 0 25268 17 3 14 15 0 8 0 amappl 88 37554 0 37392 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 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 9 0 9 4 3 1 1 0 8 1 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 170 0 18 3 0 3 3 0 8 0 uaddrrnd 24 4431 0 4399 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4431 0 4399 1 0 1 1 0 8 0 vmmpekpl 168 32908 0 32853 3 0 3 3 0 8 0 vmmpepl 168 273491 0 271207 134 21 113 116 0 357 1 vmsppl 480 4430 0 4399 6 1 5 5 0 8 0 rwobjpl 72 66409 0 60996 108 4 104 104 0 8 0 pdppl 4096 8870 0 8798 160 86 74 88 0 8 2 pvpl 32 26513 0 0 214 0 214 214 0 265 0 pmappl 256 4430 0 4399 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 579 0 154 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e5ff0) 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(ffffffff83a08e00) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:129 [inline] __mp_lock(ffffffff83a08e00) at __mp_lock+0x199 sys/kern/kern_lock.c:160 softintr_dispatch(2) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83a08e00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:129 [inline] __mp_lock(ffffffff83a08e00) at __mp_lock+0x192 sys/kern/kern_lock.c:160 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78f4f9d93460, count: 4 ddb{0}> trace x86_ipi_db(ffffffff837e5ff0) 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(ffffffff83a08e00) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:129 [inline] __mp_lock(ffffffff83a08e00) at __mp_lock+0x199 sys/kern/kern_lock.c:160 softintr_dispatch(2) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff83a08e00) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:129 [inline] __mp_lock(ffffffff83a08e00) at __mp_lock+0x192 sys/kern/kern_lock.c:160 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x78f4f9d93460, count: -11 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: 0x712786f70140, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x712786f70140, count: -1