login: uvm_fault(0xfffffd806c20a798, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff81956de0 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a2ffda0 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff81956de0 Starting stack trace... panic(ffffffff8334067f) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a2ffcf0) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000148d000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,81,2000,ffff8000ffff39b0) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff8000ffff39b0) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2ffea0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805f0f3378,81,fffffd80097fb2d8,ffff8000ffff39b0) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c064180,ffff8000ffff39b0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c064180,ffff8000ffff39b0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c064180,ffff8000ffff39b0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c064180,ffff8000ffff39b0) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff8000ffff39b0) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff8000ffff39b0,b,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff8000ffff39b0,ffff80002a300210,ffff80002a300160) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a300210) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a300210) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x712898372230, 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 334714 25423 0 0 0 0 syz-executor *219825 13503 0 0x2 0 1 syz-executor proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7eaaae49a040, 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(0xfffffd806c20a798, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7eaaae49a040, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4ef9e0 rbx 0 rdx 0 rcx 0xffff80003c4f2038 rax 0x2a r8 0xffff80003c4ef910 r9 0x1 r10 0x9ae006f0dd84686 r11 0x99a7e7e077eb42e9 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff823724c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4ef960 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=219825 pid=13503 tcnt=1 stat=onproc flags process=2 proc=0 runpri=50, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800035ff6548,0xffff80003c4f2568 process=0xffff80003c4ba6e8 user=0xffff80003c4ea000, vmspace=0xfffffd800b026d20 estcpu=36, cpticks=1, pctcpu=0.4, user=0, sys=6, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74902 157928 13503 0 2 0 syz-executor 25423 334714 42668 0 7 0 syz-executor 25423 359855 42668 0 3 0x4000000 biowait syz-executor 19534 102055 97071 0 3 0x80 nanoslp syz-executor 19534 435348 97071 0 3 0x4000080 fsleep syz-executor 48736 187507 0 0 3 0x14200 acct acct 23784 183551 76918 0 3 0x80 nanoslp syz-executor 23784 85863 76918 0 3 0x4000080 kqpoll syz-executor 23784 416756 76918 0 3 0x4000080 fsleep syz-executor 37055 304559 47677 0 4 0x82000 syz-executor 37055 358804 47677 0 3 0x4082000 biowait syz-executor 37055 447348 47677 0 3 0x4082000 inode syz-executor 37055 72632 47677 0 3 0x4082000 inode syz-executor 37055 474971 47677 0 3 0x4082000 inode syz-executor 37055 500882 47677 0 3 0x4082000 inode syz-executor 37055 238370 47677 0 3 0x4002000 suspend syz-executor *13503 219825 48426 0 7 0x2 syz-executor 32342 116423 1 0 3 0x100083 ttyin getty 76918 370122 48426 0 3 0x82 nanoslp syz-executor 6888 385297 48426 0 3 0x82 nanoslp syz-executor 9518 179333 48426 0 3 0x82 piperd syz-executor 42668 290728 48426 0 3 0x82 nanoslp syz-executor 97071 151663 48426 0 3 0x82 nanoslp syz-executor 81440 319428 0 0 3 0x14200 bored sosplice 95184 329678 48426 0 3 0x82 wait syz-executor 47677 415661 48426 0 3 0x82 nanoslp syz-executor 48426 437835 22633 0 2 0x2 syz-executor 22633 511470 61007 0 3 0x10008a sigsusp ksh 61007 217212 11663 0 3 0x98 kqread sshd-session 11663 22945 2330 0 3 0x92 kqread sshd-session 2330 227580 1 0 3 0x88 kqread sshd 83499 133427 63201 74 3 0x1100092 bpf pflogd 63201 174443 1 0 3 0x80 sbwait pflogd 445 424170 70298 73 3 0x1100090 kqread syslogd 70298 178557 1 0 3 0x100082 sbwait syslogd 65437 493245 1 0 3 0x100080 kqread resolvd 18688 444075 54261 77 3 0x100092 kqread dhcpleased 94029 387367 54261 77 3 0x100092 kqread dhcpleased 54261 480205 1 0 3 0x80 kqread dhcpleased 59679 414462 0 0 3 0x14200 bored smr 30101 211970 0 0 3 0x14200 pgzero zerothread 48060 311983 0 0 3 0x14200 aiodoned aiodoned 86501 487436 0 0 3 0x14200 syncer update 31963 428789 0 0 3 0x14200 cleaner cleaner 17703 324751 0 0 3 0x14200 reaper reaper 19875 363550 0 0 3 0x14200 pgdaemon pagedaemon 66440 373786 0 0 3 0x14200 bored viomb 36102 415549 0 0 3 0x40014200 acpi0 acpi0 72271 3540 0 0 3 0x40014200 idle1 66593 220635 0 0 3 0x14200 bored softnet3 10079 348687 0 0 3 0x14200 bored softnet2 76514 126751 0 0 3 0x14200 bored softnet1 34362 369851 0 0 3 0x14200 netlock softnet0 74658 483985 0 0 2 0x40014200 systqmp 39373 87125 0 0 3 0x14200 syncxs systq 6901 127846 0 0 3 0x14200 tmoslp softclockmp 80806 180995 0 0 3 0x40014200 tmoslp softclock 26006 473313 0 0 3 0x40014200 idle0 1 422518 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 25423 (syz-executor) thread 0xffff8000ffff3c40 (359855) Process 37055 (syz-executor) thread 0xffff800035ff62b8 (358804) Process 37055 (syz-executor) thread 0xffff800035ff67d8 (447348) Process 39373 (systq) thread 0xffff8000ffffea40 (87125) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10226 11128K 11690K 166960K 16235 0 pcb 51 19K 20K 166960K 593 0 rtable 240 12K 12K 166960K 766 0 pf 40 18K 67485K 166960K 220 0 ifaddr 44 8K 8K 166960K 149 0 ifgroup 59 2K 3K 166960K 244 0 sysctl 4 1K 9K 166960K 19 0 counters 70 37K 38K 166960K 314 0 ioctlops 0 0K 4K 166960K 2031 0 iov 0 0K 20K 166960K 124 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1521 96K 96K 166960K 4020 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 46 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 71 0 dirhash 12 2K 2K 166960K 69 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 2427 0 sigio 0 0K 0K 166960K 142 0 proc 73 91K 140K 166960K 1003 0 subproc 72 4K 4K 166960K 136 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 265 0 in_multi 95 6K 7K 166960K 241 0 ether_multi 1 0K 0K 166960K 10 0 mrt 2 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 959 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 181K 191K 166960K 23144 0 UVM aobj 80 3K 3K 166960K 85 0 pinsyscall 42 84K 106K 166960K 3736 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 117 0 NDP 13 0K 2K 166960K 102 0 temp 84 8696K 8951K 166960K 109209 0 kqueue 13 20K 32K 166960K 366 0 SYN cache 2 10K 18K 166960K 3 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle vscsiccb 40 1 0 0 1 0 1 1 0 8 0 plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 252 0 249 4 3 1 3 0 8 0 rtentry 176 241 0 142 6 0 6 6 0 8 0 unpcb 144 1738 0 1716 17 11 6 6 0 8 4 syncache 336 12 0 12 4 3 1 1 0 8 1 tcpqe 32 3 0 3 2 2 0 1 0 8 0 tcpcb 736 481 0 476 3 2 1 2 0 8 0 arp 128 41 0 23 1 0 1 1 0 8 0 inpcb 328 2625 0 2578 38 31 7 12 0 8 3 nd6 144 51 0 28 1 0 1 1 0 8 0 pkpcb 40 46 0 46 5 4 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 1 1 1 0 8 1 ppxss 1192 97 0 97 2 1 1 1 0 8 1 pppxif 1504 11 0 11 4 3 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 20 0 10 1 0 1 1 0 482 0 pffrnode 88 17 0 9 1 0 1 1 0 8 0 pffrent 40 36 0 26 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 5 0 3 2 1 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 4 0 2 2 1 1 1 0 8 0 pfstitem 24 136 0 46 1 0 1 1 0 8 0 pfstkey 128 138 0 48 3 0 3 3 0 8 0 pfstate 384 137 0 47 9 0 9 9 0 8 0 pfrule 1344 63 0 55 2 1 1 2 0 8 0 rttmr 136 4 0 4 3 2 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 1032 0 609 37 10 27 29 0 8 0 art_table 32 1035 0 609 4 0 4 4 0 8 0 art_node 16 236 0 150 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 12 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 64 0 54 1 0 1 1 0 8 0 shmpl 112 82 0 5 3 0 3 3 0 8 0 dirhash 1024 55 0 38 3 0 3 3 0 8 0 dino2pl 256 5589 0 4065 96 0 96 96 0 8 0 ffsino 288 5589 0 4065 109 0 109 109 0 8 0 nchpl 144 8758 0 7051 64 0 64 64 0 8 0 rtmask 32 12 0 12 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 32657 0 32651 4 2 2 2 0 8 0 percpumem 16 172 0 122 1 0 1 1 0 8 0 kstatmem 264 148 0 118 4 1 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 12 0 12 2 1 1 1 0 8 1 scxspl 216 36615 0 36612 15 13 2 8 1 8 1 plimitpl 152 605 0 587 1 0 1 1 0 8 0 sigapl 424 2746 0 2695 9 2 7 9 0 8 0 knotepl 120 852 0 0 26 0 26 26 0 8 0 kqueuepl 224 812 0 802 12 10 2 5 0 8 1 pipepl 336 437 0 410 8 5 3 8 0 8 0 fdescpl 520 2698 0 2667 3 0 3 3 0 8 0 filepl 160 18203 0 17946 29 14 15 17 0 8 3 lockfpl 104 873 0 871 1 0 1 1 0 8 0 lockfspl 48 322 0 320 1 0 1 1 0 8 0 sessionpl 144 41 0 32 1 0 1 1 0 8 0 pgrppl 48 209 0 192 1 0 1 1 0 8 0 ucredpl 104 2819 0 2806 1 0 1 1 0 8 0 zombiepl 144 2697 0 2695 1 0 1 1 0 8 0 processpl 1240 2746 0 2695 6 1 5 6 0 8 0 procpl 656 6251 0 6190 9 2 7 8 0 8 1 srpgc 96 16 0 16 3 3 0 1 0 8 0 sosppl 168 15 0 15 4 3 1 1 0 8 1 sockpl 728 4712 0 4640 52 40 12 16 0 8 5 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 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 120 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 36 0 0 4 0 4 4 0 8 0 mtagpl 96 228 0 0 6 0 6 6 0 8 0 mbufpl 256 806 0 0 50 0 50 50 0 8 0 bufpl 280 11473 0 5331 440 1 439 440 0 8 0 anonpl 32 12663 0 0 102 0 102 102 0 246 0 amapchunkpl 152 78931 0 78227 49 19 30 34 0 158 1 amappl16 200 6129 0 5946 27 14 13 15 0 8 3 amappl15 192 7 0 7 2 1 1 1 0 8 1 amappl14 184 150 0 138 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 3462 0 3431 4 1 3 3 0 8 0 amappl11 160 49 0 35 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 40 0 37 1 0 1 1 0 8 0 amappl7 128 134 0 121 1 0 1 1 0 8 0 amappl6 120 257 0 252 1 0 1 1 0 8 0 amappl5 112 162 0 152 1 0 1 1 0 8 0 amappl4 104 371 0 350 1 0 1 1 0 8 0 amappl3 96 16238 0 16126 5 1 4 4 0 8 0 amappl2 88 901 0 838 2 0 2 2 0 8 0 amappl1 80 19835 0 19236 15 0 15 15 0 8 0 amappl 88 21939 0 21755 5 0 5 5 0 92 0 dma8192 8192 2 0 2 2 2 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 2 2 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 10 0 10 4 4 0 1 0 8 0 dma128 128 260 0 260 4 3 1 1 0 8 1 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 22 0 21 1 0 1 1 0 8 0 aobjpl 72 84 0 5 2 0 2 2 0 8 0 uaddrrnd 24 2698 0 2667 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2698 0 2667 1 0 1 1 0 8 0 vmmpekpl 168 21097 0 21035 4 0 4 4 0 8 0 vmmpepl 168 171991 0 169812 117 13 104 107 0 357 5 vmsppl 480 2697 0 2667 6 1 5 5 0 8 0 rwobjpl 72 48022 0 40902 133 0 133 133 0 8 0 pdppl 4096 5403 0 5334 137 64 73 85 0 8 4 pvpl 32 21707 0 0 175 0 175 175 0 265 0 pmappl 256 2697 0 2667 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 491 0 96 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83879ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2ecf00,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7d729595b260, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83879ff0) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 softintr_dispatch(2) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsofttty() at Xsofttty+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153 __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83913eb8) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2ecf00,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f end of kernel end trace frame: 0x7d729595b260, 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: 0x7eaaae49a040, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x7eaaae49a040, count: -1