uvm_fault(0xfffffd806c7679a8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81db49d8 cs 8 rflags 10246 cr2 0 cpl 0 rsp ffff8000333d6a20 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81db49d8 Starting stack trace... panic(ffffffff833deb52) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff8000333d6970) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015eb000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff8000fffef248) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000fffef248) at dtclose+0x109 sys/dev/dt/dt_dev.c:239 spec_close(ffff8000333d6b20) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805eb572a0,81,fffffd80097fd5b0,ffff8000fffef248) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c97c7c8,ffff8000fffef248) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c97c7c8,ffff8000fffef248) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c97c7c8,ffff8000fffef248) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c97c7c8,ffff8000fffef248) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffef248) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffef248,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffef248,ffff8000333d6e90,ffff8000333d6de0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000333d6e90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333d6e90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7322b4d069a0, 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 *447940 41406 0 0 0 1 syz-executor 167250 9027 0 0x14000 0x40000200 0 softclock proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7cbfc1316710, 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(0xfffffd806c7679a8, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7cbfc1316710, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c3f4040 rbx 0 rdx 0 rcx 0xffff8000377ebcb0 rax 0x2a r8 0xffff80003c3f3f70 r9 0x1 r10 0xe132296bef67e04f r11 0xdb84e5871006782d r12 0 r13 0 r14 0 r15 0 rip 0xffffffff820c94c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c3f3fc0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=447940 pid=41406 tcnt=1 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffef248,0xffffffff839524c0 process=0xffff80003c4144f0 user=0xffff80003c3ef000, vmspace=0xfffffd806c767b90 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *41406 447940 42464 0 7 0 syz-executor 6914 210590 29928 0 3 0x80 fsleep syz-executor 6914 59585 29928 0 3 0x4000080 fsleep syz-executor 6914 2762 29928 0 3 0x4000080 kqsel syz-executor 68837 110507 58955 0 3 0x80 fsleep syz-executor 68837 422779 58955 0 3 0x4000080 kqpoll syz-executor 59602 101304 54931 0 3 0x80 fsleep syz-executor 59602 220360 54931 0 3 0x4000080 sbwait syz-executor 54931 179663 88193 0 2 0xc82 syz-executor 92452 211397 77965 0 3 0x80 fsleep syz-executor 92452 262037 77965 0 3 0x4000080 sbwait syz-executor 68052 138165 0 0 3 0x14280 nfsidl nfsio 923 281175 24269 0 3 0x100082 sbwait arp 24269 448756 94604 0 3 0x10008a sigsusp sh 29928 415276 88193 0 2 0xc82 syz-executor 58955 48108 88193 0 2 0xc82 syz-executor 71860 425825 88193 0 2 0xc82 syz-executor 94604 26763 88193 0 3 0x82 wait syz-executor 51405 14680 88193 0 3 0x82 wait syz-executor 42464 335787 88193 0 2 0xc82 syz-executor 77965 374439 88193 0 2 0xc82 syz-executor 88193 365170 6706 0 3 0x82 kqread syz-executor 6706 97374 19760 0 3 0x10008a sigsusp ksh 19760 496912 53937 0 3 0x98 kqread sshd-session 53937 461524 72275 0 3 0x92 kqread sshd-session 99614 174398 1 0 3 0x100083 ttyopn getty 72275 465055 1 0 3 0x88 kqread sshd 91434 81096 4592 74 3 0x1100092 bpf pflogd 4592 141416 1 0 3 0x80 sbwait pflogd 10116 112514 55874 73 3 0x1100090 kqread syslogd 55874 216794 1 0 3 0x100082 sbwait syslogd 45030 298562 1 0 3 0x100080 kqread resolvd 70401 158055 63839 77 3 0x100092 kqread dhcpleased 11597 141075 63839 77 3 0x100092 kqread dhcpleased 63839 438066 1 0 3 0x80 kqread dhcpleased 81542 20979 0 0 2 0x14200 smr 22593 351299 0 0 3 0x14200 pgzero zerothread 23458 25140 0 0 3 0x14200 aiodoned aiodoned 23737 263125 0 0 3 0x14200 syncer update 30 210005 0 0 3 0x14200 cleaner cleaner 4449 234867 0 0 3 0x14200 reaper reaper 28978 6347 0 0 3 0x14200 pgdaemon pagedaemon 61742 304274 0 0 3 0x14200 bored viomb 24638 217648 0 0 3 0x40014200 acpi0 acpi0 93675 28888 0 0 3 0x40014200 idle1 12451 447312 0 0 3 0x14200 bored softnet1 16845 212588 0 0 2 0x14200 softnet0 86069 164809 0 0 3 0x14200 smrbar systqmp 52188 365627 0 0 3 0x14200 bored systq 77277 85507 0 0 2 0x14200 softclockmp 9027 167250 0 0 7 0x40014200 softclock 32019 50655 0 0 3 0x40014200 idle0 1 34593 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 86069 (systqmp) thread 0xffff8000ffffe000 (164809) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11109 12162K 12354K 166960K 12511 0 pcb 18 12K 12K 166960K 68 0 rtable 184 6K 7K 166960K 494 0 pf 36 17K 18K 166960K 65 0 ifaddr 36 5K 7K 166960K 65 0 ifgroup 59 2K 2K 166960K 91 0 sysctl 3 1K 9K 166960K 7 0 counters 72 37K 37K 166960K 98 0 ioctlops 0 0K 4K 166960K 1500 0 iov 0 0K 12K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1343 84K 85K 166960K 1534 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 19 69K 93K 166960K 374 0 sigio 0 0K 0K 166960K 5 0 proc 75 131K 180K 166960K 600 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 92 0 in_multi 67 5K 6K 166960K 119 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 400 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 243 153K 162K 166960K 5173 0 UVM aobj 6 2K 4K 166960K 9 0 pinsyscall 45 90K 108K 166960K 1518 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 13 0 NDP 15 0K 2K 166960K 41 0 temp 45 8668K 8740K 166960K 14148 0 kqueue 14 22K 28K 166960K 81 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 49 0 45 1 0 1 1 0 8 0 rtentry 176 127 0 51 5 0 5 5 0 8 0 unpcb 144 206 0 185 4 0 4 4 0 8 3 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 126 0 121 7 0 7 7 0 8 6 arp 136 20 0 6 1 0 1 1 0 8 0 inpcb 328 319 0 308 7 0 7 7 0 8 6 nd6 152 27 0 9 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 9 0 9 1 0 1 1 0 8 1 pppxif 1504 2 0 2 1 0 1 1 0 8 1 pffrag 232 36 0 33 1 0 1 1 0 482 0 pffrnode 88 36 0 33 1 0 1 1 0 8 0 pffrent 40 69 0 66 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 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 557 0 176 28 0 28 28 0 8 3 art_table 40 559 0 176 5 0 5 5 0 8 0 art_node 32 127 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 5 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2002 0 494 95 0 95 95 0 8 0 ffsino 296 2002 0 494 117 0 117 117 0 8 0 nchpl 144 2515 0 818 64 0 64 64 0 8 0 vnodes 216 2170 0 0 121 0 121 121 0 8 0 namei 1024 7813 0 7813 2 1 1 2 0 8 1 percpumem 16 64 0 13 1 0 1 1 0 8 0 vmpool 848 1 0 1 1 0 1 1 0 8 1 kstatmem 264 52 0 22 3 0 3 3 0 8 0 scxspl 216 14266 0 14266 3 2 1 2 1 8 1 plimitpl 152 164 0 146 1 0 1 1 0 8 0 sigapl 424 686 0 636 7 0 7 7 0 8 0 knotepl 120 317 0 0 10 0 10 10 0 8 0 kqueuepl 224 102 0 91 2 0 2 2 0 8 1 pipepl 344 141 0 114 3 0 3 3 0 8 0 fdescpl 528 665 0 632 3 0 3 3 0 8 0 filepl 160 3054 0 2832 13 0 13 13 0 8 3 lockfpl 104 70 0 68 1 0 1 1 0 8 0 lockfspl 48 32 0 30 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 33 0 16 1 0 1 1 0 8 0 ucredpl 104 391 0 377 1 0 1 1 0 8 0 zombiepl 144 638 0 636 1 0 1 1 0 8 0 processpl 1232 686 0 636 5 0 5 5 0 8 0 procpl 664 1071 0 1016 6 0 6 6 0 8 0 sockpl 752 585 0 549 10 0 10 10 0 8 6 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 69 0 0 9 0 9 9 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 287 0 0 18 0 18 18 0 8 0 bufpl 280 5991 0 128 419 0 419 419 0 8 0 anonpl 32 7660 0 0 62 0 62 62 0 246 0 amapchunkpl 152 15828 0 15351 29 0 29 29 0 158 8 amappl16 200 2765 0 2742 16 1 15 15 0 8 8 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 4 0 4 1 1 0 1 0 8 0 amappl13 176 433 0 431 1 0 1 1 0 8 0 amappl12 168 1025 0 981 3 0 3 3 0 8 0 amappl11 160 26 0 26 1 1 0 1 0 8 0 amappl10 152 49 0 35 1 0 1 1 0 8 0 amappl9 144 283 0 283 1 1 0 1 0 8 0 amappl8 136 56 0 52 1 0 1 1 0 8 0 amappl7 128 82 0 81 1 0 1 1 0 8 0 amappl6 120 280 0 265 1 0 1 1 0 8 0 amappl5 112 75 0 64 1 0 1 1 0 8 0 amappl4 104 432 0 400 1 0 1 1 0 8 0 amappl3 96 2630 0 2539 4 1 3 3 0 8 0 amappl2 88 769 0 691 2 0 2 2 0 8 0 amappl1 80 10071 0 9449 15 0 15 15 0 8 1 amappl 88 4404 0 4242 5 0 5 5 0 92 0 uvmvnodes 80 106 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 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 6 0 6 1 1 0 1 0 8 0 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 8 0 3 1 0 1 1 0 8 0 uaddrrnd 24 665 0 632 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 665 0 632 1 0 1 1 0 8 0 vmmpekpl 168 7039 0 6998 3 0 3 3 0 8 1 vmmpepl 168 49854 0 47887 99 0 99 99 0 357 6 vmsppl 488 664 0 632 5 0 5 5 0 8 0 rwobjpl 80 16745 0 15676 28 0 28 28 0 8 0 pdppl 4096 1339 0 1266 99 24 75 85 0 8 2 pvpl 32 14829 0 0 120 0 120 120 0 265 0 pmappl 256 665 0 633 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 288 0 28 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83860ff0) 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(ffffffff8394d980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8394d980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff8394d980,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 softclock_thread_run(ffffffff83804f68) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff228) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff83860ff0) 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(ffffffff8394d980) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff8394d980) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff8394d980,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 softclock_thread_run(ffffffff83804f68) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff228) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: -8 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: 0x7cbfc1316710, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7cbfc1316710, count: -1