uvm_fault(0xfffffd8060c89b98, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff8223c450 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a3d4d40 gsbase 0xffff8000299ddff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff8223c450 Starting stack trace... panic(ffffffff833457ad) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a3d4c90) at kerntrap+0x30b sys/arch/amd64/amd64/trap.c:486 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000016cd000) at dt_ioctl_record_stop+0xf0 sys/dev/dt/dt_dev.c:580 dtclose(11e5f,41,2000,ffff80003c43ecf8) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,41,2000,ffff80003c43ecf8) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3d4e40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd806e377130,41,fffffd80097fb478,ffff80003c43ecf8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806bcbcca0,ffff80003c43ecf8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806bcbcca0,ffff80003c43ecf8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806bcbcca0,ffff80003c43ecf8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806bcbcca0,ffff80003c43ecf8) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003c43ecf8) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003c43ecf8,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003c43ecf8,ffff80002a3d51b0,ffff80002a3d5100) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3d51b0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3d51b0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71821291dd10, 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 *305710 65936 0 0 0 1 syz-executor 274759 32311 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x760d972cbaf0, 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(0xfffffd8060c89b98, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x760d972cbaf0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002a36dbe0 rbx 0 rdx 0 rcx 0xffff80003c43e2b8 rax 0x2a r8 0xffff80002a36db10 r9 0x1 r10 0xd948736e82b6e728 r11 0x7d503679d4df7f7f r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81ef14c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80002a36db60 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=305710 pid=65936 tcnt=2 stat=onproc flags process=0 proc=0 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a3154c0,0xffff80003c43f9d8 process=0xffff8000390175c0 user=0xffff80002a368000, vmspace=0xfffffd806b96bd70 estcpu=36, cpticks=5, pctcpu=0.0, user=4, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 3800 517947 70011 0 2 0 syz-executor 42931 308959 2632 0 2 0 syz-executor 42931 389598 2632 0 2 0x4000000 syz-executor *65936 305710 95435 0 7 0 syz-executor 65936 233099 95435 0 3 0x4000080 fsleep syz-executor 76016 396008 53852 0 3 0x80 nanoslp syz-executor 76016 142289 53852 0 3 0x4000080 kqread syz-executor 76016 203457 53852 0 3 0x4000080 fsleep syz-executor 76016 288505 53852 0 3 0x4000080 fsleep syz-executor 88854 326451 72151 0 2 0 syz-executor 88854 180700 72151 0 3 0x4000000 biowait syz-executor 88854 380601 72151 0 3 0x4000000 inode syz-executor 88854 378308 72151 0 3 0x4000080 fsleep syz-executor 31915 220415 18316 0 3 0x3000 suspend syz-executor 31915 349502 18316 0 3 0x4081000 biowait syz-executor 31915 91385 18316 0 3 0x4081000 inode syz-executor 31915 52592 18316 0 3 0x4081000 inode syz-executor 11378 461833 9481 0 3 0x82 nanoslp syz-executor 13705 93595 0 0 3 0x14200 acct acct 5578 159425 9481 0 3 0x82 wait syz-executor 18316 266131 9481 0 3 0x82 nanoslp syz-executor 72151 162190 9481 0 3 0x82 nanoslp syz-executor 70011 401411 9481 0 3 0x82 nanoslp syz-executor 2632 401434 9481 0 3 0x82 nanoslp syz-executor 53852 366049 9481 0 3 0x82 nanoslp syz-executor 95435 72995 9481 0 3 0x82 nanoslp syz-executor 37065 385138 0 0 3 0x14200 bored sosplice 9481 111782 96627 0 3 0x82 kqread syz-executor 96627 415027 30921 0 3 0x10008a sigsusp ksh 30921 143874 1799 0 3 0x98 kqread sshd-session 1799 449460 65429 0 3 0x92 kqread sshd-session 67001 379468 1 0 3 0x100083 ttyin getty 65429 238461 1 0 3 0x88 kqread sshd 69356 22106 99870 74 3 0x1100092 bpf pflogd 99870 429489 1 0 3 0x80 sbwait pflogd 28982 34344 16833 73 3 0x1100090 kqread syslogd 16833 41880 1 0 3 0x100082 sbwait syslogd 15560 287331 1 0 3 0x100080 kqread resolvd 59392 363085 35409 77 3 0x100092 kqread dhcpleased 86414 72101 35409 77 3 0x100092 kqread dhcpleased 35409 193076 1 0 3 0x80 kqread dhcpleased 228 39728 0 0 3 0x14200 bored smr 13562 456077 0 0 3 0x14200 pgzero zerothread 77229 126992 0 0 3 0x14200 aiodoned aiodoned 44385 270603 0 0 3 0x14200 syncer update 77073 63706 0 0 3 0x14200 cleaner cleaner 32311 274759 0 0 7 0x14200 reaper 96860 211567 0 0 3 0x14200 pgdaemon pagedaemon 47268 108167 0 0 3 0x14200 bored viomb 54048 133945 0 0 3 0x40014200 acpi0 acpi0 64570 443859 0 0 3 0x40014200 idle1 31504 412847 0 0 3 0x14200 bored softnet7 85906 278315 0 0 3 0x14200 bored softnet6 91045 272519 0 0 3 0x14200 bored softnet5 51662 463945 0 0 3 0x14200 bored softnet4 48257 389030 0 0 3 0x14200 bored softnet3 34567 151155 0 0 3 0x14200 bored softnet2 6020 285724 0 0 3 0x14200 bored softnet1 44738 156716 0 0 3 0x14200 netlock softnet0 16829 1666 0 0 2 0x40014200 systqmp 6889 314865 0 0 3 0x14200 bored systq 44629 233110 0 0 3 0x14200 tmoslp softclockmp 16281 164387 0 0 3 0x40014200 tmoslp softclock 74345 391653 0 0 3 0x40014200 idle0 1 128070 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 88854 (syz-executor) thread 0xffff80002a3aaf98 (180700) Process 31915 (syz-executor) thread 0xffff80002a2a9c48 (349502) Process 31915 (syz-executor) thread 0xffff80003c43ea68 (52592) Process 32311 (reaper) thread 0xffff8000ffffc7b8 (274759) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10591 12546K 12546K 166960K 21709 0 pcb 17 18K 20K 166960K 1354 0 rtable 266 16K 16K 166960K 1160 0 pf 46 20K 83K 166960K 613 0 ifaddr 43 9K 9K 166960K 365 0 ifgroup 62 2K 3K 166960K 709 0 sysctl 4 1K 9K 166960K 112 0 counters 70 37K 38K 166960K 752 0 ioctlops 0 0K 5K 166960K 2905 0 iov 0 0K 32K 166960K 439 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1684 106K 106K 166960K 7755 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 40K 48K 166960K 66 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 419 0 dirhash 12 2K 2K 166960K 93 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 5808 0 sigio 0 0K 0K 166960K 241 0 proc 72 115K 180K 166960K 1564 0 subproc 72 4K 4K 166960K 291 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 814 0 in_multi 91 6K 7K 166960K 513 0 ether_multi 1 0K 0K 166960K 39 0 mrt 1 0K 0K 166960K 35 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 271 1208K 1208K 166960K 271 0 exec 0 0K 1K 166960K 1393 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 4K 166960K 11 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 160K 181K 166960K 52006 0 UVM aobj 7 2K 2K 166960K 7 0 pinsyscall 43 86K 99K 166960K 7337 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 301 0 NDP 13 0K 2K 166960K 283 0 temp 81 8684K 8812K 166960K 268923 0 kqueue 17 28K 34K 166960K 1132 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 120 574 0 571 5 4 1 3 0 8 0 rtentry 176 385 0 289 5 0 5 5 0 8 0 unpcb 144 5229 0 5212 30 27 3 6 0 8 2 syncache 336 26 0 26 8 8 0 1 0 8 0 tcpqe 32 10 0 10 6 6 0 1 0 8 0 tcpcb 736 1935 0 1929 28 26 2 10 0 8 1 arp 128 46 0 27 1 0 1 1 0 8 0 inpcb 328 7410 0 7363 47 42 5 13 0 8 0 nd6 144 72 0 55 1 0 1 1 0 8 0 pkpcb 40 43 0 43 8 8 0 1 0 8 0 kcovpl 48 25 0 17 1 0 1 1 0 8 0 mppekey 1024 4 0 4 4 4 0 1 0 8 0 ppxss 1192 261 0 261 3 2 1 1 0 8 1 pppxif 1504 29 0 29 8 8 0 1 0 8 0 pfstscr 40 1 0 0 1 0 1 1 0 8 0 pffrag 232 49 0 40 2 1 1 2 0 482 0 pffrnode 88 44 0 35 1 0 1 1 0 8 0 pffrent 40 94 0 85 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 8 0 5 2 1 1 1 0 8 0 pfanchor 1288 2 0 1 2 1 1 1 0 8 0 pftag 88 6 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 397 0 260 1 0 1 1 0 8 0 pfstkey 128 401 0 264 5 0 5 5 0 8 0 pfstate 384 398 0 262 15 0 15 15 0 8 0 pfrule 1344 46 0 38 2 1 1 2 0 8 0 rttmr 136 6 0 6 5 5 0 1 0 8 0 art_heap8 4096 7 0 2 7 2 5 5 0 8 0 art_heap4 256 1736 0 1278 44 13 31 31 0 8 0 art_table 40 1743 0 1280 5 0 5 5 0 8 0 art_node 32 381 0 301 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 6 2 1 1 1 0 8 0 semupl 112 5 0 5 3 3 0 1 0 8 0 semapl 112 414 0 404 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 71 0 54 3 0 3 3 0 8 0 dino2pl 256 12744 0 11209 97 0 97 97 0 8 0 ffsino 296 12744 0 11209 119 0 119 119 0 8 0 nchpl 144 20541 0 19898 65 39 26 65 0 8 0 rtmask 32 51 0 51 7 6 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 76257 0 76256 5 4 1 2 0 8 0 percpumem 16 391 0 341 1 0 1 1 0 8 0 pfiaddrpl 120 3 0 2 2 1 1 1 0 8 0 kstatmem 264 466 0 436 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 35 0 35 8 8 0 1 0 8 0 scxspl 216 168718 0 168716 15 13 2 8 1 8 1 plimitpl 152 1516 0 1496 1 0 1 1 0 8 0 sigapl 424 6062 0 6006 10 3 7 9 0 8 0 knotepl 120 821 0 0 23 0 23 23 0 8 0 kqueuepl 224 2450 0 2437 25 23 2 7 0 8 1 pipepl 344 841 0 814 21 18 3 9 0 8 0 fdescpl 528 6003 0 5971 3 0 3 3 0 8 0 filepl 160 46490 0 46102 49 32 17 20 0 8 0 lockfpl 104 3679 0 3677 7 5 2 2 0 8 1 lockfspl 48 1375 0 1373 1 0 1 1 0 8 0 sessionpl 144 54 0 45 1 0 1 1 0 8 0 pgrppl 48 145 0 128 1 0 1 1 0 8 0 ucredpl 104 7938 0 7925 1 0 1 1 0 8 0 zombiepl 144 6009 0 6006 3 2 1 1 0 8 0 processpl 1248 6062 0 6006 6 1 5 6 0 8 0 procpl 656 14945 0 14878 9 2 7 8 0 8 0 sosppl 168 34 0 34 8 8 0 1 0 8 0 sockpl 752 13562 0 13495 91 80 11 22 0 8 4 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 117 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 116 0 0 10 3 7 9 0 8 0 mtagpl 96 50 0 0 2 0 2 2 0 8 0 mbufpl 256 1343 0 0 78 0 78 78 0 8 0 bufpl 280 71382 0 65240 440 1 439 440 0 8 0 anonpl 32 15714 0 0 128 1 127 127 0 246 0 amapchunkpl 152 198192 0 197558 84 49 35 39 0 158 5 amappl16 200 24990 0 24503 175 149 26 35 0 8 0 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 180 0 168 1 0 1 1 0 8 0 amappl13 176 54 0 54 2 2 0 1 0 8 0 amappl12 168 6931 0 6899 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 8 0 6 3 2 1 1 0 8 0 amappl9 144 248 0 248 1 1 0 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 154 0 142 1 0 1 1 0 8 0 amappl6 120 376 0 372 1 0 1 1 0 8 0 amappl5 112 194 0 184 1 0 1 1 0 8 0 amappl4 104 406 0 384 1 0 1 1 0 8 0 amappl3 96 38318 0 38198 4 0 4 4 0 8 0 amappl2 88 1088 0 1021 2 0 2 2 0 8 0 amappl1 80 35476 0 34874 19 4 15 16 0 8 0 amappl 88 49908 0 49722 5 0 5 5 0 92 0 dma16384 16384 2 0 2 2 2 0 1 0 8 0 dma4096 4096 3 0 3 3 3 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 9 0 9 4 4 0 1 0 8 0 dma128 128 269 0 269 7 7 0 1 0 8 0 dma64 64 9 0 9 3 3 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 21 0 20 1 0 1 1 0 8 0 aobjpl 72 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 6003 0 5971 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6003 0 5971 1 0 1 1 0 8 0 vmmpekpl 168 43179 0 43121 4 0 4 4 0 8 0 vmmpepl 168 383659 0 381116 179 63 116 117 0 357 4 vmsppl 488 6002 0 5971 6 1 5 5 0 8 0 rwobjpl 80 103457 0 96099 173 20 153 154 0 8 2 pdppl 4096 12014 0 11942 146 72 74 82 0 8 2 pvpl 32 25278 0 0 202 0 202 202 0 265 0 pmappl 256 6002 0 5971 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 462 0 142 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837f0ff0) 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(ffffffff83977ce8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83977ce8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a258630,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83977ce8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83977ce8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 intr_handler(ffff80002a258790,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(ffffffff838a4990,9) at __sanitizer_cov_trace_const_cmp4+0x3f sys/dev/kcov.c:231 mtx_enter(ffffffff838a4980) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff838a49b8,ffffffff838a4980,4,ffffffff833ec283,ffffffffffffffff) at msleep_nsec+0x2f1 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc7b8) at reaper+0x14b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff837f0ff0) 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(ffffffff83977ce8) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83977ce8) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a258630,ffff800000069c00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83977ce8) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83977ce8) at __mp_lock+0x199 sys/kern/kern_lock.c:165 intr_handler(ffff80002a258790,ffff800000079a80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_const_cmp4(ffffffff838a4990,9) at __sanitizer_cov_trace_const_cmp4+0x3f sys/dev/kcov.c:231 mtx_enter(ffffffff838a4980) at mtx_enter+0x4a sys/kern/kern_lock.c:260 msleep_nsec(ffffffff838a49b8,ffffffff838a4980,4,ffffffff833ec283,ffffffffffffffff) at msleep_nsec+0x2f1 sys/kern/kern_synch.c:209 reaper(ffff8000ffffc7b8) at reaper+0x14b sys/kern/kern_exit.c:477 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: 0x760d972cbaf0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x760d972cbaf0, count: -1