uvm_fault(0xffffffff8356e6c8, 0xffff80001f353448, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x52: repe stosq %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND 388754 92067 0 0x8000000 0x4000000 1 syz-executor * 97609 77269 74 0x19100012 0x1 0K pflogd memset() at memset+0x52 ffs_write(ffff80002a02fde0) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd807a23d720,ffff80002a02fe98,3,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03f6e0,fffffd807a23d720,fffffd807f7d3618,ffff80002a02ff68,ffff80002a02ff40) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrgenio(ffff80002a03f6e0,4,0,ffff800000a55b90,a8) at ktrgenio+0x2c3 ktrwrite2 sys/kern/kern_ktrace.c:644 [inline] ktrgenio(ffff80002a03f6e0,4,0,ffff800000a55b90,a8) at ktrgenio+0x2c3 sys/kern/kern_ktrace.c:258 dofilereadv(ffff80002a03f6e0,4,ffff80002a0300d8,0,ffff80002a030190) at dofilereadv+0x42f sys/kern/sys_generic.c:263 sys_read(ffff80002a03f6e0,ffff80002a030240,ffff80002a030190) at sys_read+0xa2 sys/kern/sys_generic.c:167 syscall(ffff80002a030240) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a030240) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75771ca86450, count: 6 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff8356e6c8, 0xffff80001f353448, 0, 2) -> d ddb{0}> trace memset() at memset+0x52 ffs_write(ffff80002a02fde0) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd807a23d720,ffff80002a02fe98,3,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03f6e0,fffffd807a23d720,fffffd807f7d3618,ffff80002a02ff68,ffff80002a02ff40) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrgenio(ffff80002a03f6e0,4,0,ffff800000a55b90,a8) at ktrgenio+0x2c3 ktrwrite2 sys/kern/kern_ktrace.c:644 [inline] ktrgenio(ffff80002a03f6e0,4,0,ffff800000a55b90,a8) at ktrgenio+0x2c3 sys/kern/kern_ktrace.c:258 dofilereadv(ffff80002a03f6e0,4,ffff80002a0300d8,0,ffff80002a030190) at dofilereadv+0x42f sys/kern/sys_generic.c:263 sys_read(ffff80002a03f6e0,ffff80002a030240,ffff80002a030190) at sys_read+0xa2 sys/kern/sys_generic.c:167 syscall(ffff80002a030240) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a030240) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75771ca86450, count: -9 ddb{0}> show registers rdi 0xffff80001f353448 rsi 0 rbp 0xffff80002a02fd00 rbx 0x269448 acpi_pdirpa+0x2552b9 rdx 0 rcx 0x577 rax 0 r8 0x2bb8 __ALIGN_SIZE+0x1bb8 r9 0xffff80002a02fc60 r10 0x43980a1a00c836bd r11 0xffff80001f353448 r12 0x4000 __ALIGN_SIZE+0x3000 r13 0x1448 __ALIGN_SIZE+0x448 r14 0xfffffd807a23d720 r15 0x1 rip 0xffffffff8109a3b2 memset+0x52 cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80002a02faf8 ss 0 memset+0x52: repe stosq %es:(%rdi) ddb{0}> show proc PROC (pflogd) tid=97609 pid=77269 tcnt=1 stat=onproc flags process=19100012 proc=1 runpri=26, usrpri=50, slppri=26, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffd450,0xffff80002a03e7c0 process=0xffff800029fe9688 user=0xffff80002a02b000, vmspace=0xfffffd806ecf5008 estcpu=0, cpticks=0, pctcpu=0.0, user=0, sys=2, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7305 91425 89840 0 2 0x8000000 syz-executor 7305 181821 89840 0 3 0xc000000 getblk syz-executor 7305 298049 89840 0 3 0xc000000 inode syz-executor 7305 186660 89840 0 3 0xc000000 inode syz-executor 7305 336288 89840 0 2 0xc000000 syz-executor 34884 238950 31863 0 2 0x8003000 syz-executor 92067 363821 66325 0 2 0x8000000 syz-executor 92067 294784 66325 0 3 0xc000080 kqsel syz-executor 92067 388754 66325 0 7 0xc000000 syz-executor 3876 221653 97823 60928 2 0x8000490 syz-executor 3876 418504 97823 60928 3 0xc000090 sbwait syz-executor 3876 133155 97823 60928 3 0xc000090 fsleep syz-executor 97657 497364 67884 0 3 0x8003000 suspend syz-executor 97657 70884 67884 0 3 0xc081000 smrbar syz-executor 20683 469791 43959 0 2 0x8000002 syz-executor 35081 504313 43959 0 2 0x8000002 syz-executor 5019 240555 43959 0 2 0x8000482 syz-executor 66325 415903 43959 0 2 0x8000482 syz-executor 67884 161560 43959 0 2 0x8000482 syz-executor 89840 494236 43959 0 2 0x8000482 syz-executor 97823 115649 43959 0 2 0x8000482 syz-executor 31863 150125 43959 0 2 0x8000482 syz-executor 18842 486561 0 0 3 0x14280 nfsidl nfsio 27312 98971 0 0 3 0x14280 nfsidl nfsio 35083 45390 0 0 3 0x14280 nfsidl nfsio 86966 288963 0 0 3 0x14280 nfsidl nfsio 86466 320569 0 0 3 0x14280 nfsidl nfsio 94175 250631 0 0 3 0x14280 nfsidl nfsio 63285 498000 0 0 3 0x14280 nfsidl nfsio 12632 6714 0 0 3 0x14280 nfsidl nfsio 7438 336054 0 0 3 0x14280 nfsidl nfsio 17190 30402 0 0 3 0x14280 nfsidl nfsio 45332 448894 0 0 3 0x14280 nfsidl nfsio 20387 176628 0 0 3 0x14280 nfsidl nfsio 56825 366205 0 0 3 0x14280 nfsidl nfsio 74253 176471 0 0 3 0x14280 nfsidl nfsio 56599 395371 0 0 3 0x14280 nfsidl nfsio 17583 469121 0 0 3 0x14280 nfsidl nfsio 87606 12855 0 0 3 0x14280 nfsidl nfsio 77215 355824 0 0 3 0x14280 nfsidl nfsio 30166 92286 0 0 3 0x14280 nfsidl nfsio 2880 53319 0 0 3 0x14280 nfsidl nfsio 68988 444303 0 0 3 0x14200 bored sosplice 43959 413015 16044 0 2 0x8000082 syz-executor 16044 362224 9167 0 3 0x810008a sigsusp ksh 9167 185864 81143 0 3 0x18000098 kqread sshd-session 81143 505125 92963 0 3 0x18000092 kqread sshd-session 3875 203040 1 0 3 0x18100083 ttyin getty 92963 479264 1 0 3 0x18000088 kqread sshd *77269 97609 86318 74 7 0x19100013 pflogd 86318 37284 1 0 3 0x18000080 sbwait pflogd 26402 388955 68553 73 2 0x19100010 syslogd 68553 341855 1 0 3 0x18100082 sbwait syslogd 45970 418457 1 0 3 0x18100080 kqread resolvd 96432 89326 2463 77 3 0x18100092 kqread dhcpleased 53745 58873 2463 77 3 0x18100092 kqread dhcpleased 2463 337197 1 0 3 0x18000080 kqread dhcpleased 41719 87701 0 0 2 0x40014200 smr 9934 65559 0 0 2 0x14200 zerothread 64586 158515 0 0 3 0x14200 aiodoned aiodoned 88144 445879 0 0 3 0x14200 syncer update 60590 390578 0 0 3 0x14200 cleaner cleaner 97057 66153 0 0 3 0x14200 reaper reaper 7095 59899 0 0 3 0x14200 pgdaemon pagedaemon 89040 381234 0 0 3 0x14200 bored viomb 74709 358745 0 0 3 0x40014200 acpi0 acpi0 44279 270153 0 0 3 0x40014200 idle1 61731 76937 0 0 3 0x14200 bored softnet3 26545 207177 0 0 3 0x14200 bored softnet2 61453 268080 0 0 3 0x14200 bored softnet1 28663 503096 0 0 3 0x14200 bored softnet0 22101 407021 0 0 3 0x14200 bored systqmp 48021 516263 0 0 3 0x14200 bored systq 12605 300825 0 0 3 0x14200 tmoslp softclockmp 47871 413863 0 0 3 0x40014200 tmoslp softclock 95226 167200 0 0 3 0x40014200 idle0 1 307561 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 7305 (syz-executor) thread 0xffff80002a03fbf0 (181821) Process 97657 (syz-executor) thread 0xffff80002a16b1f8 (70884) Process 20683 (syz-executor) thread 0xffff8000ffffc010 (469791) Process 35081 (syz-executor) thread 0xffff80002a16cce0 (504313) Process 77269 (pflogd) thread 0xffff80002a03f6e0 (97609) Process 26402 (syslogd) thread 0xffff8000ffffd6d8 (388955) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10206 10290K 10545K 166960K 11807 0 pcb 17 15K 17K 166960K 145 0 rtable 244 7K 9K 166960K 995 0 pf 38 18K 22K 166960K 345 0 ifaddr 44 8K 8K 166960K 119 0 ifgroup 60 2K 2K 166960K 140 0 counters 66 36K 36K 166960K 108 0 ioctlops 0 0K 4K 166960K 1553 0 iov 0 0K 16K 166960K 24 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1372 86K 87K 166960K 1864 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 6K 6K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 17 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 15 53K 85K 166960K 666 0 sigio 1 0K 0K 166960K 5 0 proc 70 91K 128K 166960K 1011 0 subproc 104 6K 6K 166960K 312 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 50 0 in_multi 99 7K 7K 166960K 285 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 686 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 226 74K 90K 166960K 6728 0 UVM aobj 45 2K 2K 166960K 46 0 pinsyscall 40 80K 98K 166960K 2151 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 13 0K 2K 166960K 82 0 temp 53 6806K 6873K 166960K 20508 0 kqueue 13 20K 26K 166960K 63 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 115 0 110 1 0 1 1 0 8 0 rtentry 112 304 0 191 4 0 4 4 0 8 0 unpcb 144 248 0 229 3 1 2 2 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 159 0 153 7 6 1 7 0 8 0 arp 120 50 0 32 1 0 1 1 0 8 0 inpcb 336 936 0 925 24 14 10 12 0 8 8 nd6 136 78 0 53 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 24 0 16 1 0 1 1 0 8 0 ppxss 1168 3 0 3 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 4 0 3 1 0 1 1 0 482 0 pffrnode 88 4 0 3 1 0 1 1 0 8 0 pffrent 40 91 0 90 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 47 0 47 3 2 1 1 0 8 1 pfanchor 1288 75 0 71 1 0 1 1 0 8 0 pftag 88 2 0 2 1 1 0 1 0 8 0 pfstitem 24 53 0 19 1 0 1 1 0 8 0 pfstkey 128 55 0 21 2 0 2 2 0 8 0 pfstate 376 54 0 20 4 0 4 4 0 8 0 pfrule 1344 49 0 42 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1179 0 719 29 0 29 29 0 8 0 art_table 32 1180 0 719 4 0 4 4 0 8 0 art_node 16 294 0 192 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 43 0 1 2 0 2 2 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2121 0 581 97 0 97 97 0 8 0 ffsino 272 2122 0 581 103 0 103 103 0 8 0 nchpl 144 2815 0 1109 64 0 64 64 0 8 0 uvmvnodes 80 2643 0 0 54 0 54 54 0 8 0 vnodes 216 2643 0 0 147 0 147 147 0 8 0 namei 1024 11794 0 11790 3 2 1 1 0 8 0 percpumem 16 68 0 21 1 0 1 1 0 8 0 vmpool 696 1 0 1 1 0 1 1 0 8 1 pfiaddrpl 120 13 0 13 3 2 1 1 0 8 1 kstatmem 264 68 0 42 2 0 2 2 0 8 0 scxspl 216 16492 0 16492 10 9 1 8 1 8 1 plimitpl 152 181 0 163 1 0 1 1 0 8 0 sigapl 424 954 0 885 10 1 9 9 0 8 0 futexpl 64 6100 0 6099 1 0 1 1 0 8 0 knotepl 120 579 0 0 17 0 17 17 0 8 0 kqueuepl 216 185 0 174 5 4 1 5 0 8 0 pipepl 320 177 0 149 3 0 3 3 0 8 0 fdescpl 496 914 0 885 6 1 5 5 0 8 0 filepl 152 5569 0 5311 20 5 15 16 0 8 4 lockfpl 104 135 0 133 1 0 1 1 0 8 0 lockfspl 48 60 0 58 1 0 1 1 0 8 0 sessionpl 144 38 0 29 1 0 1 1 0 8 0 pgrppl 48 66 0 49 1 0 1 1 0 8 0 ucredpl 104 879 0 865 1 0 1 1 0 8 0 zombiepl 144 888 0 885 1 0 1 1 0 8 0 processpl 1152 954 0 885 6 0 6 6 0 8 0 procpl 648 1415 0 1337 9 1 8 8 0 8 0 sockpl 664 1304 0 1269 28 15 13 15 0 8 9 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 226 0 0 29 0 29 29 0 8 0 mtagpl 96 12 0 0 1 0 1 1 0 8 0 mbufpl 256 366 0 0 22 0 22 22 0 8 0 bufpl 280 6997 0 825 441 0 441 441 0 8 0 anonpl 24 206131 0 195526 67 3 64 64 0 185 0 amapchunkpl 152 21987 0 21259 30 0 30 30 0 158 2 amappl16 200 4832 0 4681 25 17 8 18 0 8 0 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 144 0 132 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1811 0 1782 3 1 2 2 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 18 0 18 1 1 0 1 0 8 0 amappl9 144 145 0 145 1 1 0 1 0 8 0 amappl8 136 16 0 14 1 0 1 1 0 8 0 amappl7 128 150 0 138 1 0 1 1 0 8 0 amappl6 120 338 0 337 1 0 1 1 0 8 0 amappl5 112 205 0 194 1 0 1 1 0 8 0 amappl4 104 374 0 352 1 0 1 1 0 8 0 amappl3 96 4174 0 4063 4 0 4 4 0 8 0 amappl2 88 841 0 772 2 0 2 2 0 8 0 amappl1 80 10224 0 9642 15 1 14 14 0 8 0 amappl 88 6242 0 6078 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 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 45 0 1 1 0 1 1 0 8 0 uaddrrnd 24 915 0 886 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 915 0 886 1 0 1 1 0 8 0 vmmpekpl 168 8930 0 8869 4 0 4 4 0 8 0 vmmpepl 168 64158 0 62229 100 13 87 99 0 357 0 vmsppl 440 914 0 886 6 2 4 5 0 8 0 rwobjpl 56 24507 0 20747 55 2 53 53 0 8 0 pdppl 4096 1837 0 1772 115 40 75 81 0 8 10 pvpl 32 30305 0 0 246 2 244 244 0 265 0 pmappl 248 914 0 886 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 443 0 66 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace memset() at memset+0x52 ffs_write(ffff80002a02fde0) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd807a23d720,ffff80002a02fe98,3,fffffd807f7d3618) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002a03f6e0,fffffd807a23d720,fffffd807f7d3618,ffff80002a02ff68,ffff80002a02ff40) at ktrwriteraw+0x1bc sys/kern/kern_ktrace.c:682 ktrgenio(ffff80002a03f6e0,4,0,ffff800000a55b90,a8) at ktrgenio+0x2c3 ktrwrite2 sys/kern/kern_ktrace.c:644 [inline] ktrgenio(ffff80002a03f6e0,4,0,ffff800000a55b90,a8) at ktrgenio+0x2c3 sys/kern/kern_ktrace.c:258 dofilereadv(ffff80002a03f6e0,4,ffff80002a0300d8,0,ffff80002a030190) at dofilereadv+0x42f sys/kern/sys_generic.c:263 sys_read(ffff80002a03f6e0,ffff80002a030240,ffff80002a030190) at sys_read+0xa2 sys/kern/sys_generic.c:167 syscall(ffff80002a030240) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a030240) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75771ca86450, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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+0x1a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:158 rw_enter(fffffd806bf2a608,2) at rw_enter+0x10b sys/kern/kern_rwlock.c:246 uvmfault_lookup(ffff800030843670,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800030843670,ffff8000308436a8,ffff8000308436d0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806bf2a528,88b000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800030843810,88bb00) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800030843810) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff800030843c60) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800030843c60) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb320e29ec0, count: 1 ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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+0x1a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x1a sys/dev/kcov.c:158 rw_enter(fffffd806bf2a608,2) at rw_enter+0x10b sys/kern/kern_rwlock.c:246 uvmfault_lookup(ffff800030843670,0) at uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 uvm_fault_check(ffff800030843670,ffff8000308436a8,ffff8000308436d0) at uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 uvm_fault(fffffd806bf2a528,88b000,0,2) at uvm_fault+0x112 sys/uvm/uvm_fault.c:600 kpageflttrap(ffff800030843810,88bb00) at kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279 kerntrap(ffff800030843810) at kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332 alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b copyout() at copyout+0x57 syscall(ffff800030843c60) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff800030843c60) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb320e29ec0, count: -14