uvm_fault(0xfffffd8073ea0a28, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff826bb218 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80002ccfd440 gsbase 0xffffffff8382cff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff826bb218 Starting stack trace... panic(ffffffff83390ab6) at panic+0x1ba sys/kern/subr_prf.c:229 kerntrap(ffff80002ccfd390) at kerntrap+0x2fb alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff800001673d00) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593 dtclose(11e5f,81,2000,ffff80002a7bb770) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7bb770) at dtclose+0xd9 sys/dev/dt/dt_dev.c:239 spec_close(ffff80002ccfd540) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8069866d98,81,fffffd8007bfb680,ffff80002a7bb770) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd80696f2800,ffff80002a7bb770) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd80696f2800,ffff80002a7bb770) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd80696f2800,ffff80002a7bb770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd80696f2800,ffff80002a7bb770) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7bb770) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7bb770,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7bb770,ffff80002ccfd8a0,ffff80002ccfd7f0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002ccfd8a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002ccfd8a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7338fe56de00, count: 242 End of stack trace. set $lines = 0 WARNING: SPL NOT LOWERED ON SYSCALL 5 1543910400 EXIT 0 3 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *227402 85056 0 0x100003 0 0 getty savectx() at savectx+0xae end of kernel end trace frame: 0x72405c0632a0, 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> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xfffffd8073ea0a28, 0x0, 0, 1) -> e ddb> trace savectx() at savectx+0xae end of kernel end trace frame: 0x72405c0632a0, count: -1 ddb> show registers rdi 0 rsi 0 rbp 0xffff80002a7a96a0 rbx 0 rdx 0 rcx 0 rax 0x3a r8 0xffff80002a7a95d0 r9 0xfffffd8007bfbea0 r10 0x7b2c2b8bd464d83f r11 0x86a8387cb6437c66 r12 0 r13 0 r14 0xffff80002a7c8a70 r15 0 rip 0xffffffff82f403ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80002a7a9620 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb> show proc PROC (getty) tid=227402 pid=85056 tcnt=1 stat=onproc flags process=100003 proc=0 runpri=50, usrpri=50, slppri=25, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7c94d0,0xffff80002a7c82b8 process=0xffff80002a7ef190 user=0xffff80002a7a4000, vmspace=0xfffffd8009427a10 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 23663 356762 77980 0 2 0 syz-executor 23663 380385 77980 0 3 0x4000080 fsleep syz-executor 96215 231830 7877 0 2 0 syz-executor 96215 39412 7877 0 3 0x4000080 fsleep syz-executor 26862 214159 18721 0 2 0 syz-executor 26862 376347 18721 0 3 0x4000080 fsleep syz-executor 69909 174440 68530 0 2 0 syz-executor 69909 8248 68530 0 3 0x4000080 fsleep syz-executor 69909 499150 68530 0 3 0x4000080 fsleep syz-executor 2253 41663 67368 0 2 0 syz-executor 2253 388912 67368 0 3 0x4000080 fsleep syz-executor 2253 361344 67368 0 2 0x4000000 syz-executor 63771 378049 3879 60929 2 0x10 syz-executor 63771 374357 3879 60929 2 0x4000010 syz-executor 90094 456701 8116 0 2 0 syz-executor 90094 272299 8116 0 3 0x4000080 nanoslp syz-executor 90094 76104 8116 0 3 0x4000080 fsleep syz-executor 90094 499309 8116 0 3 0x4000080 fsleep syz-executor 99168 107338 0 0 3 0x14280 nfsidl nfsio 37281 329283 0 0 3 0x14280 nfsidl nfsio 11430 380850 0 0 3 0x14280 nfsidl nfsio 6827 23771 0 0 3 0x14280 nfsidl nfsio 79934 170994 0 0 3 0x14280 nfsidl nfsio 79998 511132 0 0 3 0x14280 nfsidl nfsio 98783 367177 0 0 3 0x14280 nfsidl nfsio 28323 36012 0 0 3 0x14280 nfsidl nfsio 16359 187308 0 0 3 0x14280 nfsidl nfsio 77329 164891 0 0 3 0x14280 nfsidl nfsio 81034 116079 0 0 3 0x14280 nfsidl nfsio 53312 452600 0 0 3 0x14280 nfsidl nfsio 14523 355192 0 0 3 0x14280 nfsidl nfsio 63588 95671 0 0 3 0x14280 nfsidl nfsio 83947 490205 0 0 3 0x14280 nfsidl nfsio 5464 311761 0 0 3 0x14280 nfsidl nfsio 65124 32002 0 0 3 0x14280 nfsidl nfsio 80518 190970 0 0 3 0x14280 nfsidl nfsio 45738 11348 0 0 3 0x14280 nfsidl nfsio 70718 241984 0 0 3 0x14280 nfsidl nfsio 18721 84679 92000 0 2 0xc82 syz-executor 68530 98070 92000 0 2 0xc82 syz-executor 8116 346453 92000 0 2 0x2 syz-executor 77980 201212 92000 0 2 0x2 syz-executor 61689 4267 92000 0 2 0x2 syz-executor 3879 292413 92000 0 2 0x2 syz-executor 67368 284758 92000 0 2 0x2 syz-executor 7877 176167 92000 0 2 0xc82 syz-executor 92000 487613 76886 0 3 0x2 netlock syz-executor 76886 497725 85963 0 3 0x10008a sigsusp ksh 85963 8683 42783 0 3 0x98 kqread sshd-session 42783 281772 94111 0 3 0x92 kqread sshd-session *85056 227402 1 0 7 0x100003 getty 94111 428899 1 0 3 0x88 kqread sshd 57539 338175 19953 73 3 0x1100090 kqread syslogd 19953 369528 1 0 3 0x100082 sbwait syslogd 11146 415304 1 0 3 0x100080 kqread resolvd 18025 139278 39008 77 3 0x100092 kqread dhcpleased 23199 464032 39008 77 3 0x100092 kqread dhcpleased 39008 281426 1 0 3 0x80 kqread dhcpleased 53419 392574 0 0 3 0x14200 bored smr 79075 3174 0 0 2 0x14200 zerothread 66298 221017 0 0 3 0x14200 aiodoned aiodoned 75604 496374 0 0 2 0x14200 update 90332 349931 0 0 3 0x14200 cleaner cleaner 7844 420017 0 0 3 0x14200 reaper reaper 9356 409599 0 0 3 0x14200 pgdaemon pagedaemon 9906 385342 0 0 3 0x14200 bored viomb 99528 284271 0 0 3 0x40014200 acpi0 acpi0 56906 442255 0 0 3 0x14200 netlock softnet0 41423 229175 0 0 3 0x14200 bored systqmp 66654 45474 0 0 3 0x14200 bored systq 71337 45869 0 0 3 0x40014200 netlock softclock 61868 141902 0 0 3 0x40014200 idle0 1 249450 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10228 11121K 12185K 166960K 13600 0 pcb 18 15K 16K 166960K 572 0 rtable 192 10K 10K 166960K 635 0 pf 30 12K 14K 166960K 226 0 ifaddr 31 5K 8K 166960K 148 0 ifgroup 50 2K 2K 166960K 285 0 sysctl 4 1K 9K 166960K 27 0 counters 32 17K 18K 166960K 156 0 ioctlops 0 0K 4K 166960K 792 0 iov 0 0K 24K 166960K 160 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1448 91K 92K 166960K 3574 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 33 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 94 0 dirhash 12 2K 3K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 106K 166960K 2092 0 sigio 0 0K 0K 166960K 137 0 proc 61 59K 83K 166960K 700 0 subproc 72 4K 4K 166960K 74 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 263 0 in_multi 52 3K 7K 166960K 141 0 ether_multi 2 0K 0K 166960K 11 0 mrt 2 0K 0K 166960K 23 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 277 1235K 1235K 166960K 277 0 exec 0 0K 1K 166960K 1001 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 257 165K 184K 166960K 20554 0 UVM aobj 14 2K 4K 166960K 16 0 pinsyscall 39 78K 90K 166960K 3188 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 206 0 NDP 11 0K 2K 166960K 108 0 temp 77 8656K 8784K 166960K 105231 0 kqueue 14 22K 33K 166960K 437 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 253 0 250 2 1 1 2 0 8 0 rtentry 136 159 0 95 4 0 4 4 0 8 0 unpcb 144 2064 0 2046 9 5 4 6 0 8 3 syncache 336 13 0 13 2 2 0 1 0 8 0 tcpqe 32 5 0 5 2 2 0 1 0 8 0 tcpcb 736 1285 0 1278 14 6 8 8 0 8 7 arp 96 24 0 12 1 0 1 1 0 8 0 ipq 40 16 0 16 1 0 1 1 0 8 1 ipqe 40 86 0 86 1 0 1 1 0 8 1 inpcb 328 2584 0 2570 22 14 8 13 0 8 6 ip6q 72 6 0 3 1 0 1 1 0 8 0 ip6af 40 8 0 5 1 0 1 1 0 8 0 nd6 112 33 0 15 1 0 1 1 0 8 0 pkpcb 40 16 0 16 3 2 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1072 97 0 97 4 3 1 1 0 8 1 pppxif 1384 15 0 15 2 1 1 1 0 8 1 pfrktable 1344 2 0 2 1 1 0 1 0 8 0 pfrule 1344 1 0 1 1 1 0 1 0 8 0 rttmr 136 4 0 4 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 721 0 446 31 7 24 31 0 8 2 art_table 40 725 0 446 5 0 5 5 0 8 0 art_node 32 156 0 98 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 5 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 82 0 72 1 0 1 1 0 8 0 shmpl 112 13 0 2 1 0 1 1 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 5986 0 4499 95 0 95 95 0 8 0 ffsino 256 5986 0 4499 95 0 95 95 0 8 0 nchpl 144 8965 0 7274 64 1 63 64 0 8 0 rtmask 32 16 0 16 3 2 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 33666 0 33666 2 0 2 2 0 8 2 kstatmem 264 184 0 162 2 0 2 2 0 8 0 acpiwqpl 32 34 0 34 1 0 1 1 1 8 1 scsiplug 72 15 0 15 4 3 1 1 0 8 1 scxspl 216 30430 0 30429 15 7 8 8 1 8 7 plimitpl 152 1137 0 1121 1 0 1 1 0 8 0 sigapl 424 2408 0 2345 8 0 8 8 0 8 0 knotepl 120 373235 0 373186 36 25 11 17 0 8 7 kqueuepl 184 965 0 955 8 7 1 6 0 8 0 pipepl 304 296 0 267 3 0 3 3 0 8 0 fdescpl 448 2366 0 2336 4 0 4 4 0 8 0 filepl 120 19772 0 19550 18 7 11 15 0 8 3 lockfpl 104 1337 0 1333 2 1 1 2 0 8 0 lockfspl 48 300 0 296 1 0 1 1 0 8 0 sessionpl 144 26 0 18 1 0 1 1 0 8 0 pgrppl 48 135 0 119 1 0 1 1 0 8 0 ucredpl 104 4322 0 4310 1 0 1 1 0 8 0 zombiepl 144 2661 0 2660 1 0 1 1 0 8 0 processpl 1152 2408 0 2345 5 0 5 5 0 8 0 procpl 664 5552 0 5478 8 1 7 7 0 8 0 sosppl 176 10 0 10 2 2 0 1 0 8 0 sockpl 552 5091 0 5056 22 14 8 13 0 8 5 mcl64k 65536 310 0 310 2 1 1 1 0 8 1 mcl16k 16384 8 0 8 2 1 1 1 0 8 1 mcl9k 9216 67 0 67 1 1 0 1 0 8 0 mcl8k 8192 35 0 35 3 2 1 1 0 8 1 mcl4k 4096 5192 0 5137 17 9 8 17 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 3114 0 3110 3 1 2 2 0 8 1 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 32184 0 31865 35 11 24 27 0 8 3 bufpl 280 11228 0 5006 445 0 445 445 0 8 0 anonpl 24 341203 0 332823 77 0 77 77 0 187 0 amapchunkpl 152 72678 0 72072 59 21 38 38 0 158 14 amappl16 200 6028 0 5763 44 16 28 28 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 11 0 11 1 1 0 1 0 8 0 amappl13 176 408 0 407 1 0 1 1 0 8 0 amappl12 168 2724 0 2685 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 44 0 33 1 0 1 1 0 8 0 amappl9 144 265 0 265 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 84 0 81 1 0 1 1 0 8 0 amappl6 120 264 0 252 1 0 1 1 0 8 0 amappl5 112 74 0 66 1 0 1 1 0 8 0 amappl4 104 415 0 389 1 0 1 1 0 8 0 amappl3 96 12475 0 12378 3 0 3 3 0 8 0 amappl2 88 2533 0 2460 2 0 2 2 0 8 0 amappl1 80 18332 0 17793 13 0 13 13 0 8 0 amappl 88 19424 0 19240 5 0 5 5 0 92 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 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 6 0 6 1 1 0 1 0 8 0 dma128 128 257 0 257 1 1 0 1 0 8 0 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 15 0 2 1 0 1 1 0 8 0 uaddrrnd 24 2366 0 2336 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2366 0 2336 1 0 1 1 0 8 0 vmmpekpl 168 19531 0 19496 3 0 3 3 0 8 0 vmmpepl 168 151923 0 149816 103 2 101 103 0 357 3 vmsppl 368 2365 0 2336 4 1 3 4 0 8 0 rwobjpl 40 44217 0 37175 73 0 73 73 0 8 0 pdppl 4096 4738 0 4672 120 54 66 76 0 8 0 pvpl 32 995329 0 981143 162 10 152 162 0 265 0 pmappl 216 2365 0 2336 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 443 0 100 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace savectx() at savectx+0xae end of kernel end trace frame: 0x72405c0632a0, count: -1 ddb> machine ddbcpu 1 No such command ddb> trace savectx() at savectx+0xae end of kernel end trace frame: 0x72405c0632a0, count: -1