uvm_fault(0xfffffd800b0fbd68, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81f082a8 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a3f3310 gsbase 0xffff8000299fdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81f082a8 Starting stack trace... panic(ffffffff833a521b) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a3f3260) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000016c1000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,3,2000,ffff80003c462fb8) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,3,2000,ffff80003c462fb8) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3f3410) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80775f6990,3,fffffd80097fb750,ffff80003c462fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80613a8580,ffff80003c462fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80613a8580,ffff80003c462fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd80613a8580,ffff80003c462fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80613a8580,ffff80003c462fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c462fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c462fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c462fb8,ffff80002a3f3780,ffff80002a3f36d0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3f3780) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3f3780) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7155ec4ffd10, 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 *248896 76098 0 0 0 1 syz-executor 98546 74495 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e1543254a60, 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(0xfffffd800b0fbd68, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e1543254a60, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002ec0b330 rbx 0 rdx 0 rcx 0xffff80003c4634e8 rax 0x2a r8 0xffff80002ec0b260 r9 0x1 r10 0x113330691fcbd51b r11 0xaa07b028fea3a5da r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82ec04c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002ec0b2b0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=248896 pid=76098 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c462fb8,0xffff80003c462568 process=0xffff800033420e98 user=0xffff80002ec06000, vmspace=0xfffffd806ef693d8 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *76098 248896 29392 0 7 0 syz-executor 76098 513082 29392 0 3 0x4000080 fsleep syz-executor 23244 377048 12674 0 3 0x82 nanoslp syz-executor 59657 296615 0 0 3 0x14280 nfsidl nfsio 11495 272260 0 0 3 0x14280 nfsidl nfsio 43462 203742 0 0 3 0x14280 nfsidl nfsio 875 339046 0 0 3 0x14280 nfsidl nfsio 21950 287410 1 0 3 0x100083 ttyin getty 79352 340174 75536 60929 3 0x3010 suspend syz-executor 79352 446765 75536 60929 3 0x4081010 inode syz-executor 79352 180671 75536 60929 3 0x4081010 inode syz-executor 90400 21429 12674 0 3 0x82 wait syz-executor 69596 174779 91523 0 3 0x82 sbwait sshd-session 29392 164836 12674 0 3 0x82 nanoslp syz-executor 36059 92814 12674 0 3 0x2 biowait syz-executor 20235 213613 12674 0 3 0x82 nanoslp syz-executor 10380 196561 12674 0 3 0x82 nanoslp syz-executor 75536 517392 12674 0 3 0x82 wait syz-executor 8134 477162 12674 0 3 0x2 biowait syz-executor 96462 405005 0 0 3 0x14200 bored sosplice 12674 75237 36727 0 3 0x82 kqread syz-executor 36727 392833 46294 0 3 0x10008a sigsusp ksh 46294 523012 62154 0 3 0x98 kqread sshd-session 62154 297323 91523 0 3 0x92 kqread sshd-session 91523 168551 1 0 3 0x88 kqread sshd 10969 516048 21171 74 3 0x1100092 bpf pflogd 21171 104692 1 0 3 0x80 sbwait pflogd 62777 222411 15006 73 3 0x1100090 kqread syslogd 15006 38339 1 0 3 0x100082 sbwait syslogd 93420 336757 1 0 3 0x100080 kqread resolvd 81338 467422 0 0 3 0x14200 bored smr 30390 56455 0 0 2 0x14200 zerothread 3823 492413 0 0 3 0x14200 aiodoned aiodoned 22475 181959 0 0 3 0x14200 syncer update 30209 438866 0 0 3 0x14200 cleaner cleaner 74495 98546 0 0 7 0x14200 reaper 77860 137049 0 0 3 0x14200 pgdaemon pagedaemon 34564 30111 0 0 3 0x14200 bored viomb 386 498557 0 0 3 0x40014200 acpi0 acpi0 41237 54239 0 0 3 0x40014200 idle1 26568 166569 0 0 3 0x14200 bored softnet7 94915 290846 0 0 3 0x14200 bored softnet6 99716 198475 0 0 3 0x14200 bored softnet5 63161 78832 0 0 3 0x14200 bored softnet4 87521 5340 0 0 3 0x14200 bored softnet3 12827 415601 0 0 3 0x14200 bored softnet2 80590 462601 0 0 3 0x14200 bored softnet1 94044 412341 0 0 3 0x14200 netlock softnet0 44478 266763 0 0 3 0x14200 smrbar systqmp 66266 191747 0 0 3 0x14200 bored systq 50933 205844 0 0 3 0x14200 tmoslp softclockmp 68840 468408 0 0 3 0x40014200 tmoslp softclock 78987 74248 0 0 3 0x40014200 idle0 1 216482 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 79352 (syz-executor) thread 0xffff800031018a80 (446765) Process 79352 (syz-executor) thread 0xffff800031018550 (180671) Process 36059 (syz-executor) thread 0xffff800031019778 (92814) Process 8134 (syz-executor) thread 0xffff80002a2de570 (477162) Process 74495 (reaper) thread 0xffff8000ffffc538 (98546) Process 44478 (systqmp) thread 0xffff8000ffffe530 (266763) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10261 11078K 12476K 166960K 16180 0 pcb 17 16K 24K 166960K 2007 0 rtable 202 14K 15K 166960K 1708 0 pf 42 18K 131090K 166960K 746 0 ifaddr 36 9K 11K 166960K 439 0 ifgroup 67 2K 3K 166960K 815 0 sysctl 4 1K 9K 166960K 120 0 counters 74 37K 39K 166960K 888 0 ioctlops 0 0K 8K 166960K 3183 0 iov 0 0K 24K 166960K 557 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1552 98K 98K 166960K 6677 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 13K 166960K 102 0 VM map 2 1K 1K 166960K 2 0 sem 20 160K 160K 166960K 128 0 dirhash 12 2K 2K 166960K 150 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 240K 166960K 6616 0 sigio 0 0K 0K 166960K 193 0 proc 70 99K 164K 166960K 2001 0 subproc 72 4K 4K 166960K 294 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 973 0 in_multi 57 4K 7K 166960K 590 0 ether_multi 1 0K 0K 166960K 66 0 mrt 1 0K 0K 166960K 55 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 0 0K 1K 166960K 2040 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 11 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 222 151K 177K 166960K 60705 0 UVM aobj 6 3K 3K 166960K 6 0 pinsyscall 36 72K 101K 166960K 8527 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 427 0 NDP 17 0K 2K 166960K 332 0 temp 151 8653K 8909K 166960K 309061 0 kqueue 7 12K 32K 166960K 1259 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 120 650 0 649 3 2 1 2 0 8 0 rtentry 176 586 0 519 6 1 5 5 0 8 0 unpcb 144 4299 0 4285 22 21 1 6 0 8 0 syncache 336 49 0 49 11 10 1 1 0 8 1 tcpqe 32 17 0 17 10 9 1 1 0 8 1 tcpcb 736 2855 0 2842 50 48 2 13 0 8 0 arp 128 76 0 66 1 0 1 1 0 8 0 inpcb 328 8306 0 8293 64 62 2 12 0 8 0 nd6 144 94 0 80 1 0 1 1 0 8 0 pkpcb 40 114 0 114 8 7 1 1 0 8 1 kcovpl 48 32 0 24 1 0 1 1 0 8 0 mppekey 1024 6 0 6 3 3 0 1 0 8 0 ppxss 1192 317 0 317 2 1 1 1 0 8 1 pppxif 1504 32 0 32 9 8 1 1 0 8 1 pffrag 232 93 0 85 1 0 1 1 0 482 0 pffrnode 88 83 0 75 1 0 1 1 0 8 0 pffrent 40 187 0 179 1 0 1 1 0 8 0 pfosfp 40 1430 0 1430 5 5 0 5 0 8 0 pfosfpen 112 1430 0 1430 21 21 0 21 0 8 0 pfrktable 1344 8 0 8 5 5 0 1 0 8 0 pfanchor 1288 3 0 1 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 527 0 374 1 0 1 1 0 8 0 pfstkey 128 527 0 374 6 0 6 6 0 8 0 pfstate 384 525 0 374 23 3 20 23 0 8 0 pfrule 1344 31 0 26 2 1 1 2 0 8 0 rttmr 136 18 0 18 7 7 0 1 0 8 0 art_heap8 4096 7 0 3 5 1 4 5 0 8 0 art_heap4 256 2399 0 2107 49 27 22 30 0 8 0 art_table 40 2406 0 2110 5 0 5 5 0 8 0 art_node 32 515 0 458 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 121 0 103 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 110 0 93 3 0 3 3 0 8 0 dino2pl 256 14232 0 12666 99 0 99 99 0 8 0 ffsino 296 14232 0 12666 121 0 121 121 0 8 0 nchpl 144 23329 0 22717 65 38 27 65 0 8 0 rtmask 32 53 0 53 13 13 0 1 0 8 0 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 87115 0 87109 5 3 2 2 0 8 0 percpumem 16 459 0 407 1 0 1 1 0 8 0 pfiaddrpl 120 1 0 1 1 1 0 1 0 8 0 kstatmem 264 542 0 506 5 2 3 3 0 8 0 acpiwqpl 32 4 0 4 1 0 1 1 1 8 1 scsiplug 72 34 0 34 12 11 1 1 0 8 1 scxspl 216 151506 0 151504 20 19 1 8 1 8 0 plimitpl 152 1671 0 1654 1 0 1 1 0 8 0 sigapl 424 6912 0 6857 9 2 7 9 0 8 0 knotepl 120 806 0 0 23 0 23 23 0 8 0 kqueuepl 224 2907 0 2901 32 27 5 5 0 8 4 pipepl 344 1171 0 1144 29 26 3 9 0 8 0 fdescpl 528 6855 0 6828 3 0 3 3 0 8 0 filepl 160 51555 0 51353 56 41 15 23 0 8 1 lockfpl 104 2735 0 2734 3 2 1 2 0 8 0 lockfspl 48 918 0 917 1 0 1 1 0 8 0 sessionpl 144 99 0 90 1 0 1 1 0 8 0 pgrppl 48 209 0 192 1 0 1 1 0 8 0 ucredpl 104 8846 0 8834 1 0 1 1 0 8 0 zombiepl 144 10038 0 10033 1 0 1 1 0 8 0 processpl 1232 6912 0 6857 6 0 6 6 0 8 0 procpl 664 17856 0 17797 9 1 8 8 0 8 0 sosppl 168 34 0 34 10 10 0 1 0 8 0 sockpl 752 13630 0 13602 105 98 7 26 0 8 2 mcl64k 65536 27 0 0 4 0 4 4 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 133 0 0 17 1 16 17 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 146 0 0 11 4 7 11 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 398 0 0 20 0 20 20 0 8 0 bufpl 280 60412 0 54268 440 0 440 440 0 8 0 anonpl 32 13985 0 0 113 0 113 113 0 246 0 amapchunkpl 152 215373 0 214830 75 45 30 38 0 158 1 amappl16 200 22983 0 22917 90 71 19 29 0 8 4 amappl15 192 8 0 8 3 3 0 1 0 8 0 amappl14 184 257 0 247 1 0 1 1 0 8 0 amappl13 176 42 0 41 1 0 1 1 0 8 0 amappl12 168 7933 0 7906 3 1 2 2 0 8 0 amappl11 160 53 0 45 1 0 1 1 0 8 0 amappl10 152 27 0 26 2 1 1 1 0 8 0 amappl9 144 248 0 247 2 1 1 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 231 0 221 1 0 1 1 0 8 0 amappl6 120 464 0 459 1 0 1 1 0 8 0 amappl5 112 263 0 255 1 0 1 1 0 8 0 amappl4 104 518 0 499 1 0 1 1 0 8 0 amappl3 96 44674 0 44574 4 0 4 4 0 8 0 amappl2 88 1369 0 1316 2 0 2 2 0 8 0 amappl1 80 46108 0 45522 17 2 15 16 0 8 0 amappl 88 58197 0 58035 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 2 0 1 0 8 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 4 0 4 3 3 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma512 512 2 0 2 2 2 0 1 0 8 0 dma256 256 9 0 9 4 3 1 1 0 8 1 dma128 128 261 0 261 9 8 1 1 0 8 1 dma64 64 72 0 72 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 22 0 21 1 0 1 1 0 8 0 aobjpl 72 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 6855 0 6828 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6855 0 6828 1 0 1 1 0 8 0 vmmpekpl 168 52426 0 52362 4 0 4 4 0 8 0 vmmpepl 168 441954 0 440174 150 53 97 103 0 357 1 vmsppl 488 6854 0 6828 5 1 4 5 0 8 0 rwobjpl 80 119953 0 113074 164 16 148 150 0 8 0 pdppl 4096 13718 0 13656 174 104 70 84 0 8 8 pvpl 32 23735 0 0 194 2 192 192 0 265 0 pmappl 256 6854 0 6828 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 470 0 213 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83782ff0) 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(ffffffff838ab1e8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838ab1e8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a278c50,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 reaper(ffff8000ffffc538) at reaper+0x1f1 sys/kern/kern_exit.c:505 end trace frame: 0x0, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83782ff0) 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(ffffffff838ab1e8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838ab1e8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a278c50,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838ab1e8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 reaper(ffff8000ffffc538) at reaper+0x1f1 sys/kern/kern_exit.c:505 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: 0x7e1543254a60, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7e1543254a60, count: -1