uvm_fault(0xfffffd8074582200, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82752c18 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002a3020a0 gsbase 0xffff8000299edff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82752c18 Starting stack trace... panic(ffffffff833a390f) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80002a301ff0) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001611000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,1,2000,ffff8000fffee018) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff8000fffee018) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80002a3021a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8072eb6b18,1,fffffd80097fb548,ffff8000fffee018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b9d43f0,ffff8000fffee018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b9d43f0,ffff8000fffee018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b9d43f0,ffff8000fffee018) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b9d43f0,ffff8000fffee018) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffee018) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffee018,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffee018,ffff80002a302510,ffff80002a302460) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a302510) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a302510) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x77c996342d10, 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 *521562 71054 0 0 0x4000000 1 syz-executor 424334 29144 0 0x14000 0x200 0 reaper proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xcf3260dcc0, 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(0xfffffd8074582200, 0x0, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xcf3260dcc0, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c4db410 rbx 0 rdx 0 rcx 0xffff8000fffefa08 rax 0x2a r8 0xffff80003c4db340 r9 0x1 r10 0x9a893d6472ac0f4d r11 0xb91180d5b9e172d4 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81b544c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c4db390 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=521562 pid=71054 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffeefa8,0xffffffff838fabc8 process=0xffff80003c4dc9d0 user=0xffff80003c4d6000, vmspace=0xfffffd806ef60008 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71054 515937 33936 0 2 0 syz-executor 71054 447991 33936 0 2 0x4000000 syz-executor 71054 226570 33936 0 3 0x4000080 fsleep syz-executor *71054 521562 33936 0 7 0x4000000 syz-executor 54533 257474 21441 0 2 0 syz-executor 54533 325712 21441 0 2 0x4000000 syz-executor 66388 467457 0 0 3 0x14280 nfsidl nfsio 77975 179592 0 0 3 0x14280 nfsidl nfsio 79059 215384 0 0 3 0x14280 nfsidl nfsio 10867 76374 80357 0 2 0x2 syz-executor 48842 175149 0 0 3 0x14200 acct acct 93557 386163 80357 0 3 0x82 nanoslp syz-executor 33936 410366 80357 0 3 0x82 nanoslp syz-executor 21441 241815 80357 0 3 0x82 nanoslp syz-executor 67988 103258 80357 0 3 0x82 wait syz-executor 27600 351315 1 0 3 0x100083 ttyin getty 88034 502977 80357 0 3 0x82 wait syz-executor 83731 460040 80357 0 2 0x2 syz-executor 97537 175331 80357 0 3 0x82 wait syz-executor 54251 26255 0 0 3 0x14200 bored sosplice 80357 68677 99199 0 3 0x82 kqread syz-executor 99199 485427 7532 0 3 0x10008a sigsusp ksh 7532 44371 42689 0 3 0x98 kqread sshd-session 42689 467314 10176 0 3 0x92 kqread sshd-session 10176 182202 1 0 3 0x88 kqread sshd 3733 511215 40592 74 3 0x1100092 bpf pflogd 40592 74878 1 0 3 0x80 sbwait pflogd 30106 109716 52695 73 3 0x1100090 kqread syslogd 52695 380797 1 0 3 0x100082 sbwait syslogd 10047 66757 1 0 3 0x100080 kqread resolvd 62162 320399 73249 77 3 0x100092 kqread dhcpleased 11090 385195 73249 77 3 0x100092 kqread dhcpleased 73249 39692 1 0 3 0x80 kqread dhcpleased 73958 224393 0 0 3 0x14200 bored smr 9381 428431 0 0 3 0x14200 pgzero zerothread 64372 509342 0 0 3 0x14200 aiodoned aiodoned 37250 169379 0 0 3 0x14200 syncer update 39630 273896 0 0 3 0x14200 cleaner cleaner 29144 424334 0 0 7 0x14200 reaper 18537 173523 0 0 3 0x14200 pgdaemon pagedaemon 54839 246880 0 0 3 0x14200 bored viomb 80487 144673 0 0 3 0x40014200 acpi0 acpi0 17317 331314 0 0 3 0x40014200 idle1 75224 325502 0 0 3 0x14200 bored softnet1 29049 289204 0 0 3 0x14200 netlock softnet0 82797 503905 0 0 3 0x14200 smrbar systqmp 23477 220839 0 0 3 0x14200 bored systq 92973 319415 0 0 3 0x14200 tmoslp softclockmp 20585 239265 0 0 3 0x40014200 tmoslp softclock 17116 47626 0 0 3 0x40014200 idle0 1 284106 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 82797 (systqmp) thread 0xffff8000ffffe7c8 (503905) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10256 11095K 11644K 166960K 24619 0 pcb 18 22K 28K 166960K 2732 0 rtable 220 14K 16K 166960K 1992 0 pf 36 17K 19K 166960K 761 0 ifaddr 39 10K 12K 166960K 557 0 ifgroup 59 2K 3K 166960K 1000 0 sysctl 4 1K 9K 166960K 79 0 counters 70 37K 38K 166960K 1440 0 ioctlops 0 0K 4K 166960K 3509 0 iov 0 0K 30K 166960K 764 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1473 93K 93K 166960K 8899 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 44 0 VM map 2 1K 1K 166960K 2 0 sem 27 113K 149K 166960K 180 0 dirhash 12 2K 2K 166960K 186 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 9481 0 sigio 0 0K 0K 166960K 390 0 proc 73 115K 164K 166960K 2590 0 subproc 72 4K 4K 166960K 435 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 2303 0 in_multi 69 5K 7K 166960K 878 0 ether_multi 1 0K 0K 166960K 125 0 mrt 1 0K 0K 166960K 43 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 2791 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 14 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 152K 171K 166960K 84868 0 UVM aobj 77 3K 3K 166960K 78 0 pinsyscall 43 86K 105K 166960K 11552 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 531 0 NDP 13 0K 2K 166960K 434 0 temp 87 8652K 74188K 166960K 441111 0 kqueue 13 20K 35K 166960K 1881 0 SYN cache 2 8K 16K 166960K 3 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 1024 0 1019 7 6 1 3 0 8 0 rtentry 176 676 0 600 5 0 5 5 0 8 0 unpcb 144 7397 0 7375 47 44 3 8 0 8 2 syncache 336 14 0 14 10 9 1 1 0 8 1 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 3544 0 3539 59 52 7 13 0 8 6 arp 136 88 0 75 1 0 1 1 0 8 0 inpcb 328 12316 0 12307 97 90 7 18 0 8 5 nd6 144 130 0 116 1 0 1 1 0 8 0 pkpcb 40 83 0 83 14 13 1 1 0 8 1 kcovpl 48 48 0 40 1 0 1 1 0 8 0 mppekey 1024 7 0 7 4 3 1 1 0 8 1 ppxss 1192 570 0 570 5 4 1 1 0 8 1 pppxif 1504 46 0 46 13 12 1 1 0 8 1 pffrag 232 74 0 65 2 0 2 2 0 482 0 pffrnode 88 61 0 53 1 0 1 1 0 8 0 pffrent 40 206 0 197 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 pfstitem 24 525 0 377 1 0 1 1 0 8 0 pfstkey 128 525 0 377 5 0 5 5 0 8 0 pfstate 384 525 0 377 15 0 15 15 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 2952 0 2566 49 22 27 30 0 8 0 art_table 40 2955 0 2566 6 1 5 5 0 8 0 art_node 32 656 0 583 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 14 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 158 0 133 1 0 1 1 0 8 0 shmpl 112 75 0 1 3 0 3 3 0 8 0 dirhash 1024 134 0 117 3 0 3 3 0 8 0 dino2pl 256 18735 0 17145 101 1 100 100 0 8 0 ffsino 296 18735 0 17145 124 1 123 123 0 8 0 nchpl 144 31524 0 29724 67 0 67 67 0 8 0 rtmask 32 48 0 48 9 8 1 1 0 8 1 uvmvnodes 80 5948 0 0 122 0 122 122 0 8 0 vnodes 216 5948 0 0 331 0 331 331 0 8 0 namei 1024 116868 0 116868 6 5 1 2 0 8 1 percpumem 16 735 0 685 1 0 1 1 0 8 0 kstatmem 264 678 0 648 8 5 3 3 0 8 0 acpiwqpl 32 3 0 3 1 0 1 1 1 8 1 scsiplug 72 37 0 37 15 14 1 1 0 8 1 scxspl 216 193852 0 193852 23 21 2 8 1 8 2 plimitpl 152 2463 0 2446 1 0 1 1 0 8 0 sigapl 424 9734 0 9681 14 8 6 10 0 8 0 knotepl 120 940 0 0 25 0 25 25 0 8 0 kqueuepl 224 4249 0 4239 37 32 5 6 0 8 4 pipepl 344 1717 0 1690 45 42 3 14 0 8 0 fdescpl 528 9600 0 9568 3 0 3 3 0 8 0 filepl 160 73418 0 73181 69 53 16 21 0 8 3 lockfpl 104 5061 0 5059 8 7 1 3 0 8 0 lockfspl 48 1945 0 1943 1 0 1 1 0 8 0 sessionpl 144 72 0 63 1 0 1 1 0 8 0 pgrppl 48 305 0 288 1 0 1 1 0 8 0 ucredpl 104 12343 0 12328 1 0 1 1 0 8 0 zombiepl 144 11008 0 11002 4 3 1 1 0 8 0 processpl 1232 9734 0 9681 9 4 5 7 0 8 0 procpl 664 25598 0 25541 11 5 6 8 0 8 0 sosppl 168 50 0 50 12 11 1 1 0 8 1 sockpl 752 21256 0 21220 185 176 9 24 0 8 5 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 122 0 0 14 0 14 14 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 150 0 0 12 1 11 11 0 8 0 mtagpl 96 103 0 0 2 0 2 2 0 8 0 mbufpl 256 2046 0 0 122 0 122 122 0 8 0 bufpl 280 79416 0 73273 441 2 439 440 0 8 0 anonpl 32 16900 0 0 136 0 136 136 0 246 0 amapchunkpl 152 304062 0 303451 92 57 35 37 0 158 9 amappl16 200 29289 0 29224 173 156 17 33 0 8 5 amappl15 192 6 0 6 2 2 0 1 0 8 0 amappl14 184 224 0 212 1 0 1 1 0 8 0 amappl13 176 6 0 5 3 2 1 1 0 8 0 amappl12 168 10886 0 10854 4 2 2 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 11 0 10 2 1 1 1 0 8 0 amappl9 144 252 0 251 2 1 1 1 0 8 0 amappl8 136 29 0 25 1 0 1 1 0 8 0 amappl7 128 204 0 191 1 0 1 1 0 8 0 amappl6 120 586 0 582 1 0 1 1 0 8 0 amappl5 112 292 0 281 1 0 1 1 0 8 0 amappl4 104 371 0 347 1 0 1 1 0 8 0 amappl3 96 54093 0 53986 8 5 3 4 0 8 0 amappl2 88 10026 0 9945 2 0 2 2 0 8 0 amappl1 80 49934 0 49332 16 1 15 15 0 8 0 amappl 88 81969 0 81783 5 0 5 5 0 92 0 dma16384 16384 4 0 4 4 4 0 1 0 8 0 dma8192 8192 4 0 4 4 4 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 3 0 3 3 3 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 258 0 258 6 6 0 1 0 8 0 dma64 64 10 0 10 5 5 0 1 0 8 0 dma32 32 8 0 8 2 2 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 77 0 1 2 0 2 2 0 8 0 uaddrrnd 24 9600 0 9568 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9600 0 9568 1 0 1 1 0 8 0 vmmpekpl 168 66706 0 66646 5 1 4 4 0 8 0 vmmpepl 168 593484 0 591353 190 84 106 118 0 357 1 vmsppl 488 9599 0 9568 6 1 5 5 0 8 0 rwobjpl 80 147928 0 140899 175 22 153 155 0 8 0 pdppl 4096 19208 0 19136 174 100 74 84 0 8 2 pvpl 32 26227 0 0 212 2 210 211 0 265 0 pmappl 256 9599 0 9568 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 580 0 207 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83799ff0) 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(ffffffff838f9428) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2449d0,ffff800000069c00) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff838f9428) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_release_all(ffffffff838f9428) at __mp_release_all+0xd8 sys/kern/kern_lock.c:215 msleep_nsec(ffffffff8383f018,ffffffff8383efe0,4,ffffffff83386afc,ffffffffffffffff) at msleep_nsec+0x1e1 sys/kern/kern_synch.c:-1 reaper(ffff8000ffffd760) at reaper+0x13b sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff83799ff0) 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(ffffffff838f9428) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2449d0,ffff800000069c00) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff838f9428) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff838f9428) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_release_all(ffffffff838f9428) at __mp_release_all+0xd8 sys/kern/kern_lock.c:215 msleep_nsec(ffffffff8383f018,ffffffff8383efe0,4,ffffffff83386afc,ffffffffffffffff) at msleep_nsec+0x1e1 sys/kern/kern_synch.c:-1 reaper(ffff8000ffffd760) at reaper+0x13b 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: 0xcf3260dcc0, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0xcf3260dcc0, count: -1