uvm_fault(0xfffffd800efad3f0, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82ed3ad8 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff800037881670 gsbase 0xffff8000299fdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82ed3ad8 Starting stack trace... panic(ffffffff8339e0d2) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff8000378815c0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff80000151b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(31e5f,81,2000,ffff80002a2c7248) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(31e5f,81,2000,ffff80002a2c7248) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800037881770) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8078e41378,81,fffffd80097fb478,ffff80002a2c7248) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd800c0bf460,ffff80002a2c7248) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd800c0bf460,ffff80002a2c7248) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd800c0bf460,ffff80002a2c7248) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd800c0bf460,ffff80002a2c7248) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2c7248) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2c7248,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2c7248,ffff800037881ae0,ffff800037881a30) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800037881ae0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037881ae0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75a14d397d10, count: 242 End of stack trace. WARN ING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *395356 97998 0 0 0 1 syz-executor 160564 61364 0 0x14000 0x40000200 0 softclock proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x718a3f3f7af0, 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(0xfffffd800efad3f0, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x718a3f3f7af0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a363450 rbx 0 rdx 0 rcx 0xffff80002a32aab0 rax 0x2a r8 0xffff80002a363380 r9 0x1 r10 0x848f258e330a79e r11 0x52bdf399a2bdeef9 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff8323d4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a3633d0 ss 0 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=395356 pid=97998 tcnt=3 stat=onproc flags process=0 proc=0 runpri=86, usrpri=84, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a32afe0,0xffff80002a32a2f8 process=0xffff80002a2b44f0 user=0xffff80002a35e000, vmspace=0xfffffd800efad020 estcpu=34, cpticks=9, pctcpu=0.8, user=7, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71632 107179 31656 0 2 0 syz-executor 71632 175812 31656 0 2 0x4000000 syz-executor 10935 356234 30310 0 2 0 syz-executor 10935 343604 30310 0 3 0x4000080 fsleep syz-executor 10935 9015 30310 0 3 0x4000080 fsleep syz-executor *97998 395356 76567 0 7 0 syz-executor 97998 373426 76567 0 3 0x4000080 fsleep syz-executor 97998 76056 76567 0 3 0x4000080 fsleep syz-executor 65138 484580 98777 0 2 0 syz-executor 65138 362516 98777 0 2 0x4000000 syz-executor 65138 513665 98777 0 2 0x4000c00 syz-executor 65138 198781 98777 0 2 0x4000001 syz-executor 84584 239773 68381 0 2 0x1 syz-executor 84584 477032 68381 0 3 0x4000080 fsleep syz-executor 72323 395947 41064 -1 3 0x3010 suspend syz-executor 72323 303302 41064 -1 2 0x4081010 syz-executor 72323 71344 41064 -1 3 0x4081010 inode syz-executor 72323 227380 41064 -1 3 0x4081010 inode syz-executor 29670 192889 0 0 3 0x14200 acct acct 47242 436859 78571 0 2 0x2 syz-executor 31656 87845 78571 0 2 0xc82 syz-executor 68381 37960 78571 0 2 0x3 syz-executor 50261 230632 1 0 2 0x100083 getty 76567 186554 78571 0 2 0xc82 syz-executor 62030 170313 70906 0 3 0x82 sbwait sshd-session 30310 168758 78571 0 2 0xc82 syz-executor 98777 242561 78571 0 2 0xc82 syz-executor 83213 516699 78571 0 2 0xc82 syz-executor 21878 167306 0 0 3 0x14200 bored sosplice 41064 188601 78571 0 2 0x3 syz-executor 78571 388459 65578 0 3 0x82 kqread syz-executor 65578 74319 34369 0 3 0x10008a sigsusp ksh 34369 209003 61852 0 3 0x98 kqread sshd-session 61852 271830 70906 0 3 0x92 kqread sshd-session 70906 255958 1 0 3 0x88 kqread sshd 18404 212074 92706 74 3 0x1100092 bpf pflogd 92706 461646 1 0 3 0x80 sbwait pflogd 80856 158568 60445 73 3 0x1100090 kqread syslogd 60445 435073 1 0 3 0x100082 sbwait syslogd 61218 356622 1 0 3 0x100080 kqread resolvd 54590 386418 0 0 3 0x14200 bored smr 32051 506772 0 0 3 0x14200 pgzero zerothread 81348 347271 0 0 3 0x14200 aiodoned aiodoned 35381 486297 0 0 2 0x14e00 update 87087 126894 0 0 3 0x14200 cleaner cleaner 94184 290907 0 0 3 0x14200 reaper reaper 75909 43924 0 0 3 0x14200 pgdaemon pagedaemon 21610 282193 0 0 3 0x14200 bored viomb 33200 77486 0 0 3 0x40014200 acpi0 acpi0 13854 325794 0 0 3 0x40014200 idle1 19032 51303 0 0 3 0x14200 bored softnet7 25837 436586 0 0 3 0x14200 bored softnet6 77796 392798 0 0 3 0x14200 bored softnet5 19820 65921 0 0 3 0x14200 bored softnet4 35960 97345 0 0 3 0x14200 bored softnet3 48392 253764 0 0 3 0x14200 bored softnet2 84523 206651 0 0 3 0x14200 bored softnet1 20505 166146 0 0 2 0x14200 softnet0 24865 388183 0 0 2 0x14200 systqmp 1931 351540 0 0 3 0x14200 bored systq 26568 411227 0 0 2 0x14200 softclockmp 61364 160564 0 0 7 0x40014200 softclock 94439 74877 0 0 3 0x40014200 idle0 1 405066 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 71632 (syz-executor) thread 0xffff80003a437250 (175812) Process 65138 (syz-executor) thread 0xffff80003a436558 (362516) Process 72323 (syz-executor) thread 0xffff80002a2c6550 (303302) Process 72323 (syz-executor) thread 0xffff80003a437cb0 (71344) Process 47242 (syz-executor) thread 0xffff80002a32ad48 (436859) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10258 11085K 12443K 166960K 15525 0 pcb 20 22K 26K 166960K 1421 0 rtable 257 13K 14K 166960K 1462 0 pf 45 19K 67487K 166960K 421 0 ifaddr 46 9K 9K 166960K 280 0 ifgroup 68 2K 3K 166960K 514 0 sysctl 4 1K 9K 166960K 47 0 counters 74 37K 38K 166960K 530 0 ioctlops 0 0K 4K 166960K 2791 0 iov 0 0K 28K 166960K 411 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1481 93K 94K 166960K 4975 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 157K 166960K 66 0 VM map 2 1K 1K 166960K 2 0 sem 42 2K 2K 166960K 47 0 dirhash 12 2K 2K 166960K 78 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 4757 0 sigio 1 0K 0K 166960K 310 0 proc 66 83K 164K 166960K 1406 0 subproc 72 4K 4K 166960K 198 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 974 0 in_multi 88 6K 7K 166960K 410 0 ether_multi 1 0K 0K 166960K 41 0 mrt 1 0K 0K 166960K 37 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 1342 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 39 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 232 144K 178K 166960K 44658 0 UVM aobj 120 8K 8K 166960K 130 0 pinsyscall 39 78K 100K 166960K 6259 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 416 0 NDP 15 0K 1K 166960K 214 0 temp 81 8652K 8788K 166960K 205559 0 kqueue 7 12K 31K 166960K 940 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 120 555 0 554 6 5 1 3 0 8 0 rtentry 176 580 0 483 5 0 5 5 0 8 0 unpcb 144 4523 0 4507 32 30 2 10 0 8 1 syncache 336 25 0 25 9 9 0 1 0 8 0 tcpqe 32 7 0 7 5 5 0 1 0 8 0 tcpcb 736 2374 0 2349 50 43 7 11 0 8 3 arp 128 106 0 89 1 0 1 1 0 8 0 inpcb 328 6982 0 6951 57 49 8 13 0 8 3 nd6 144 59 0 41 1 0 1 1 0 8 0 pkpcb 40 28 0 28 12 11 1 1 0 8 1 kcovpl 48 22 0 14 1 0 1 1 0 8 0 mppekey 1024 5 0 5 3 3 0 1 0 8 0 ppxss 1192 174 0 174 4 3 1 1 0 8 1 pppxif 1504 20 0 20 7 7 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 36 0 25 1 0 1 1 0 482 0 pffrnode 88 30 0 20 1 0 1 1 0 8 0 pffrent 40 102 0 91 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 3 0 3 2 1 1 1 0 8 1 pfstitem 24 236 0 139 1 0 1 1 0 8 0 pfstkey 128 236 0 139 4 0 4 4 0 8 0 pfstate 384 234 0 139 10 0 10 10 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 11 0 11 6 6 0 1 0 8 0 art_heap8 4096 5 0 1 5 1 4 5 0 8 0 art_heap4 256 1542 0 1113 42 14 28 35 0 8 0 art_table 40 1547 0 1114 6 1 5 6 0 8 0 art_node 32 576 0 495 2 0 2 2 0 8 0 sysvmsgpl 40 11 0 5 1 0 1 1 0 8 0 semapl 112 42 0 2 2 0 2 2 0 8 0 shmpl 112 127 0 10 4 0 4 4 0 8 0 dirhash 1024 61 0 44 3 0 3 3 0 8 0 dino2pl 256 10059 0 8521 97 0 97 97 0 8 0 ffsino 296 10059 0 8521 119 0 119 119 0 8 0 nchpl 144 16484 0 15917 65 37 28 65 0 8 2 rtmask 32 25 0 25 11 10 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 62842 0 62840 8 6 2 2 0 8 1 percpumem 16 280 0 228 1 0 1 1 0 8 0 kstatmem 264 346 0 310 5 2 3 3 0 8 0 scsiplug 72 14 0 14 8 8 0 1 0 8 0 scxspl 216 114841 0 114841 21 19 2 8 1 8 2 plimitpl 152 1440 0 1421 1 0 1 1 0 8 0 sigapl 424 5054 0 5000 13 5 8 9 0 8 0 knotepl 120 1146 0 0 33 1 32 32 0 8 0 kqueuepl 224 1934 0 1927 20 19 1 7 0 8 0 pipepl 344 746 0 716 13 9 4 9 0 8 0 fdescpl 528 4957 0 4927 3 0 3 3 0 8 0 filepl 160 40031 0 39807 46 31 15 21 0 8 0 lockfpl 104 2426 0 2425 6 5 1 2 0 8 0 lockfspl 48 720 0 719 1 0 1 1 0 8 0 sessionpl 144 60 0 51 1 0 1 1 0 8 0 pgrppl 48 262 0 245 1 0 1 1 0 8 0 ucredpl 104 6307 0 6296 1 0 1 1 0 8 0 zombiepl 144 7412 0 7411 5 4 1 1 0 8 0 processpl 1248 5054 0 5000 6 0 6 6 0 8 0 procpl 664 12915 0 12849 11 3 8 9 0 8 0 sosppl 168 24 0 24 10 9 1 1 0 8 1 sockpl 752 12383 0 12335 124 114 10 28 0 8 3 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 88 0 0 10 1 9 10 0 8 0 mtagpl 96 151 0 0 4 0 4 4 0 8 0 mbufpl 256 1226 0 0 74 0 74 74 0 8 0 bufpl 280 47340 0 41195 441 1 440 440 0 8 0 anonpl 32 13906 0 0 113 1 112 112 0 246 0 amapchunkpl 152 166182 0 165679 84 55 29 37 0 158 4 amappl16 200 16772 0 16655 116 100 16 30 0 8 4 amappl15 192 4 0 4 2 2 0 1 0 8 0 amappl14 184 187 0 177 1 0 1 1 0 8 0 amappl13 176 4 0 3 1 0 1 1 0 8 0 amappl12 168 5883 0 5854 3 1 2 2 0 8 0 amappl11 160 56 0 48 1 0 1 1 0 8 0 amappl10 152 13 0 13 2 2 0 1 0 8 0 amappl9 144 251 0 251 1 1 0 1 0 8 0 amappl8 136 30 0 26 1 0 1 1 0 8 0 amappl7 128 161 0 150 1 0 1 1 0 8 0 amappl6 120 338 0 333 1 0 1 1 0 8 0 amappl5 112 210 0 203 1 0 1 1 0 8 0 amappl4 104 414 0 393 1 0 1 1 0 8 0 amappl3 96 32244 0 32135 4 0 4 4 0 8 0 amappl2 88 1109 0 1049 2 0 2 2 0 8 0 amappl1 80 32101 0 31509 16 1 15 15 0 8 0 amappl 88 42790 0 42621 5 0 5 5 0 92 0 dma32768 32768 2 0 2 2 2 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 10 0 10 5 5 0 2 0 8 0 dma128 128 258 0 258 5 5 0 1 0 8 0 dma64 64 9 0 9 4 4 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 129 0 10 3 0 3 3 0 8 0 uaddrrnd 24 4957 0 4927 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4957 0 4927 1 0 1 1 0 8 0 vmmpekpl 168 38546 0 38477 4 0 4 4 0 8 0 vmmpepl 168 318398 0 316432 160 62 98 116 0 357 0 vmsppl 488 4956 0 4927 5 0 5 5 0 8 0 rwobjpl 80 87962 0 80912 158 7 151 153 0 8 0 pdppl 4096 9922 0 9854 156 88 68 82 0 8 0 pvpl 32 23353 0 0 188 1 187 188 0 265 0 pmappl 256 4956 0 4927 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 489 0 173 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8378fff0) 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(ffffffff8389d448) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8389d448) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80002a218030,ffff800000079000) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 sys/dev/kcov.c:153 __mp_lock(ffffffff8389d448) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8389d448) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff8389d448,1) 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(ffffffff837a4d78) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff4c0) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff8378fff0) 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(ffffffff8389d448) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8389d448) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80002a218030,ffff800000079000) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge17_untramp() at Xintr_ioapic_edge17_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 kd_curproc sys/dev/kcov.c:584 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x25 sys/dev/kcov.c:153 __mp_lock(ffffffff8389d448) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8389d448) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff8389d448,1) 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(ffffffff837a4d78) at softclock_thread_run+0x79 sys/kern/kern_timeout.c:836 softclock_thread(ffff8000fffff4c0) at softclock_thread+0x10a sys/kern/kern_timeout.c:858 end trace frame: 0x0, count: -13 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: 0x718a3f3f7af0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x718a3f3f7af0, count: -1