login: uvm_fault(0xfffffd800d3af5d8, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff83142868 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a2e5180 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff83142868 Starting stack trace... panic(ffffffff833a4b66) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a2e50d0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001612000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80003882b260) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003882b260) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a2e5280) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80659c7878,81,fffffd80097fb750,ffff80003882b260) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8063882298,ffff80003882b260) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8063882298,ffff80003882b260) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8063882298,ffff80003882b260) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8063882298,ffff80003882b260) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003882b260) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003882b260,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003882b260,ffff80002a2e55f0,ffff80002a2e5540) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2e55f0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2e55f0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7c3fe00d7d30, 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 *430626 10953 0 0 0 1 syz-executor 508650 847 0 0x14000 0x40000200 0 softclock proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73606ef7fdd0, 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(0xfffffd800d3af5d8, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73606ef7fdd0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003881ba80 rbx 0 rdx 0 rcx 0xffff8000388282c0 rax 0x2a r8 0xffff80003881b9b0 r9 0x1 r10 0x3d50d1b99567b238 r11 0x90769183fe27057c r12 0 r13 0xffffffff82894328 Xdoreti+0x18 r14 0 r15 0 rip 0xffffffff81b444c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003881ba00 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=430626 pid=10953 tcnt=3 stat=onproc flags process=0 proc=0 runpri=80, usrpri=80, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800038829250,0xffff800038828568 process=0xffff800038824ec0 user=0xffff800038816000, vmspace=0xfffffd800d3af020 estcpu=30, cpticks=10, pctcpu=0.8, user=6, sys=4, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58166 523621 40440 0 2 0 syz-executor 58166 11669 40440 0 2 0x4000000 syz-executor 78549 511688 94520 0 2 0 syz-executor 78549 227903 94520 0 3 0x4000000 smrbar syz-executor *10953 430626 33361 0 7 0 syz-executor 10953 25633 33361 0 3 0x4000080 fsleep syz-executor 10953 58981 33361 0 3 0x4000080 fsleep syz-executor 72010 361444 73501 60929 2 0xc90 syz-executor 72010 251645 73501 60929 3 0x4000090 lockf syz-executor 72010 111284 73501 60929 3 0x4000090 lockf syz-executor 72010 255780 73501 60929 3 0x4000090 ttyin syz-executor 72010 184467 73501 60929 3 0x4000090 fsleep syz-executor 77120 11001 36256 0 2 0xc80 syz-executor 77120 111391 36256 0 3 0x4000080 ttyout syz-executor 77120 268080 36256 0 3 0x4000080 fsleep syz-executor 36256 522137 56775 0 2 0xc82 syz-executor 54471 16800 1 0 2 0x100083 getty 94520 455779 56775 0 2 0xc82 syz-executor 42479 372873 0 0 3 0x14200 bored sosplice 88137 483647 56775 0 3 0x82 wait syz-executor 40440 353826 56775 0 2 0xc82 syz-executor 52056 87443 56775 0 3 0x82 wait syz-executor 73501 433712 56775 0 2 0xc82 syz-executor 48765 390232 56775 0 2 0xc82 syz-executor 33361 261567 56775 0 2 0xc82 syz-executor 56775 310525 18379 0 3 0x82 kqread syz-executor 18379 67061 50334 0 3 0x10008a sigsusp ksh 50334 517896 29488 0 3 0x98 kqread sshd-session 29488 214627 58968 0 3 0x92 kqread sshd-session 58968 72850 1 0 3 0x88 kqread sshd 96963 518154 92983 74 3 0x1100092 bpf pflogd 92983 145666 1 0 3 0x80 sbwait pflogd 88287 199020 37397 73 3 0x1100090 kqread syslogd 37397 34699 1 0 3 0x100082 sbwait syslogd 53140 430005 1 0 3 0x100080 kqread resolvd 81538 520448 53333 77 3 0x100092 kqread dhcpleased 28255 74663 53333 77 3 0x100092 kqread dhcpleased 53333 483722 1 0 3 0x80 kqread dhcpleased 26780 80840 0 0 2 0x14200 smr 9931 122713 0 0 3 0x14200 pgzero zerothread 31291 293673 0 0 3 0x14200 aiodoned aiodoned 15906 242107 0 0 3 0x14200 syncer update 99121 121287 0 0 3 0x14200 cleaner cleaner 60296 476920 0 0 3 0x14200 reaper reaper 51220 342172 0 0 3 0x14200 pgdaemon pagedaemon 83773 157444 0 0 3 0x14200 bored viomb 19819 71928 0 0 3 0x40014200 acpi0 acpi0 22870 185786 0 0 3 0x40014200 idle1 77858 328146 0 0 3 0x14200 bored softnet7 21198 43028 0 0 3 0x14200 bored softnet6 6484 188905 0 0 3 0x14200 bored softnet5 60181 322922 0 0 3 0x14200 bored softnet4 93687 33497 0 0 3 0x14200 bored softnet3 34038 123257 0 0 3 0x14200 bored softnet2 85547 111698 0 0 3 0x14200 bored softnet1 35715 433634 0 0 2 0x14200 softnet0 76658 313779 0 0 2 0x14200 systqmp 21540 521683 0 0 3 0x14200 bored systq 83320 255395 0 0 2 0x14200 softclockmp 847 508650 0 0 7 0x40014200 softclock 20839 244018 0 0 3 0x40014200 idle0 1 199344 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 78549 (syz-executor) thread 0xffff800038828a88 (227903) exclusive rwlock clonelk r = 0 (0xffffffff83782f88) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 if_clone_destroy+0x67 sys/net/if.c:-1 #3 tun_dev_close+0x1d9 sys/net/if_tun.c:523 #4 spec_close+0x417 sys/kern/spec_vnops.c:-1 #5 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #6 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] #6 vn_closefile+0x12b sys/kern/vfs_vnops.c:615 #7 fdrop+0x121 sys/kern/kern_descrip.c:1280 #8 closef+0x192 sys/kern/kern_descrip.c:1264 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10273 11083K 11869K 166960K 14091 0 pcb 19 16K 24K 166960K 752 0 rtable 209 12K 12K 166960K 573 0 pf 45 19K 67255K 166960K 269 0 ifaddr 41 7K 8K 166960K 157 0 ifgroup 68 2K 3K 166960K 304 0 sysctl 4 1K 9K 166960K 54 0 counters 74 37K 38K 166960K 336 0 ioctlops 0 0K 4K 166960K 2140 0 iov 0 0K 44K 166960K 260 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1496 94K 94K 166960K 3887 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 10K 18K 166960K 39 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 202 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2931 0 sigio 0 0K 0K 166960K 60 0 proc 72 115K 164K 166960K 865 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 494 0 in_multi 73 5K 7K 166960K 200 0 ether_multi 1 0K 0K 166960K 21 0 mrt 2 0K 0K 166960K 15 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 662 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 271 161K 185K 166960K 27701 0 UVM aobj 61 5K 5K 166960K 68 0 pinsyscall 43 86K 110K 166960K 4103 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 204 0 NDP 15 0K 2K 166960K 115 0 temp 80 8652K 8780K 166960K 130575 0 kqueue 18 27K 34K 166960K 571 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 120 288 0 285 2 1 1 2 0 8 0 rtentry 176 172 0 95 5 0 5 5 0 8 0 unpcb 144 2099 0 2081 19 13 6 6 0 8 5 syncache 336 18 0 18 5 5 0 1 0 8 0 tcpqe 32 4 0 4 2 2 0 1 0 8 0 tcpcb 736 1108 0 1102 28 21 7 10 0 8 6 arp 128 27 0 13 1 0 1 1 0 8 0 inpcb 328 3616 0 3603 31 24 7 10 0 8 5 nd6 144 29 0 11 1 0 1 1 0 8 0 pkpcb 40 30 0 30 6 5 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1192 103 0 103 3 2 1 1 0 8 1 pppxif 1504 13 0 13 4 4 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 30 0 18 1 0 1 1 0 482 0 pffrnode 88 25 0 15 1 0 1 1 0 8 0 pffrent 40 56 0 44 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 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pfstitem 24 162 0 72 1 0 1 1 0 8 0 pfstkey 128 166 0 76 3 0 3 3 0 8 0 pfstate 384 162 0 74 10 0 10 10 0 8 0 pfrule 1344 29 0 24 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 681 0 356 31 10 21 31 0 8 0 art_table 40 682 0 356 6 0 6 6 0 8 0 art_node 32 171 0 109 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 9 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 198 0 188 1 0 1 1 0 8 0 shmpl 112 65 0 7 2 0 2 2 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 7092 0 5583 95 0 95 95 0 8 0 ffsino 296 7092 0 5583 117 0 117 117 0 8 0 nchpl 144 11277 0 10660 64 38 26 64 0 8 0 rtmask 32 22 0 22 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 38082 0 38082 3 2 1 2 0 8 1 percpumem 16 183 0 131 1 0 1 1 0 8 0 kstatmem 264 196 0 160 5 2 3 3 0 8 0 scsiplug 72 15 0 15 5 5 0 1 0 8 0 scxspl 216 72970 0 72970 17 16 1 8 1 8 1 plimitpl 152 887 0 867 1 0 1 1 0 8 0 sigapl 424 3228 0 3173 7 0 7 7 0 8 0 knotepl 120 845 0 0 24 0 24 24 0 8 0 kqueuepl 224 1071 0 1057 11 9 2 5 0 8 1 pipepl 344 694 0 666 21 18 3 9 0 8 0 fdescpl 528 3195 0 3163 3 0 3 3 0 8 0 filepl 160 22917 0 22677 29 13 16 19 0 8 4 lockfpl 104 1525 0 1518 2 1 1 2 0 8 0 lockfspl 48 627 0 622 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 149 0 132 1 0 1 1 0 8 0 ucredpl 104 4355 0 4341 1 0 1 1 0 8 0 zombiepl 144 3176 0 3173 1 0 1 1 0 8 0 processpl 1248 3228 0 3173 5 0 5 5 0 8 0 procpl 664 7861 0 7796 8 1 7 7 0 8 0 sosppl 168 32 0 32 3 3 0 1 0 8 0 sockpl 752 6203 0 6169 46 29 17 17 0 8 13 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 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 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 130 0 0 16 0 16 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 48 0 0 6 1 5 5 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 1158 0 0 73 0 73 73 0 8 0 bufpl 280 30182 0 24039 439 0 439 439 0 8 0 anonpl 32 13009 0 0 105 0 105 105 0 246 0 amapchunkpl 152 96602 0 95937 64 33 31 36 0 158 1 amappl16 200 15710 0 15632 102 84 18 27 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 214 0 202 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 1 0 1 0 8 0 amappl12 168 3883 0 3851 4 1 3 3 0 8 0 amappl11 160 55 0 41 1 0 1 1 0 8 0 amappl10 152 7 0 7 3 3 0 1 0 8 0 amappl9 144 273 0 273 1 1 0 1 0 8 0 amappl8 136 37 0 34 1 0 1 1 0 8 0 amappl7 128 128 0 114 1 0 1 1 0 8 0 amappl6 120 205 0 201 1 0 1 1 0 8 0 amappl5 112 155 0 144 1 0 1 1 0 8 0 amappl4 104 353 0 333 1 0 1 1 0 8 0 amappl3 96 20000 0 19870 5 1 4 4 0 8 0 amappl2 88 774 0 707 2 0 2 2 0 8 0 amappl1 80 23056 0 22448 18 3 15 16 0 8 0 amappl 88 26416 0 26217 5 0 5 5 0 92 0 dma65536 65536 2 0 2 2 2 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 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 258 0 258 4 4 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 9 0 9 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 67 0 7 2 0 2 2 0 8 0 uaddrrnd 24 3195 0 3163 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3195 0 3163 1 0 1 1 0 8 0 vmmpekpl 168 27223 0 27174 5 2 3 3 0 8 0 vmmpepl 168 211587 0 209418 141 32 109 115 0 357 5 vmsppl 488 3194 0 3163 6 2 4 5 0 8 0 rwobjpl 80 63364 0 56339 154 4 150 151 0 8 2 pdppl 4096 6398 0 6326 116 44 72 88 0 8 0 pvpl 32 22136 0 0 182 3 179 180 0 265 0 pmappl 256 3194 0 3163 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 395 0 92 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8381aff0) 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(ffffffff83892778) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83892778) at __mp_lock+0x199 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff83892778,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 softclock_thread_run(ffffffff83782a28) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000ffffef90) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff8381aff0) 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(ffffffff83892778) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83892778) at __mp_lock+0x199 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff83892778,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 softclock_thread_run(ffffffff83782a28) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000ffffef90) 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: 0x73606ef7fdd0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x73606ef7fdd0, count: -1