uvm_fault(0xffffffff82e28bd0, 0xffff80001ce63e00, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memcpy+0x19: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND memcpy() at memcpy+0x19 ufs_inactive(ffff80002a690d18) at ufs_inactive+0x229 sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffffd8068b196f8,ffff80002a62f008) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd8068b196f8) at vrele+0xcd sys/kern/vfs_subr.c:827 fdfree(ffff80002a62f008) at fdfree+0x1f4 sys/kern/kern_descrip.c:1210 exit1(ffff80002a62f008,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199 sys_exit(ffff80002a62f008,ffff80002a690fb0,ffff80002a690f00) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002a690fb0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f49b1104d80, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff82e28bd0, 0xffff80001ce63e00, 0, 2) -> d ddb> trace memcpy() at memcpy+0x19 ufs_inactive(ffff80002a690d18) at ufs_inactive+0x229 sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffffd8068b196f8,ffff80002a62f008) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd8068b196f8) at vrele+0xcd sys/kern/vfs_subr.c:827 fdfree(ffff80002a62f008) at fdfree+0x1f4 sys/kern/kern_descrip.c:1210 exit1(ffff80002a62f008,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199 sys_exit(ffff80002a62f008,ffff80002a690fb0,ffff80002a690f00) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002a690fb0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f49b1104d80, count: -9 ddb> show registers rdi 0xffff80001ce63e00 rsi 0xfffffd8068a99300 rbp 0xffff80002a690ca0 rbx 0x2 rdx 0x100 rcx 0x20 rax 0x35b r8 0xffffffffffffffff r9 0x2 r10 0xd3b14781006563ba r11 0xffff80001ce63e00 r12 0xfffffd8068b015a8 r13 0xfffffd806c799270 r14 0 r15 0xffff8000006ab800 rip 0xffffffff8250f969 memcpy+0x19 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002a690c38 ss 0x10 memcpy+0x19: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syz-executor4051834110) tid=153670 pid=92164 tcnt=1 stat=onproc flags process=8 proc=2000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a62e2c0,0xffff80002a62e820 process=0xffff8000ffffa188 user=0xffff80002a68c000, vmspace=0xfffffd806c2d6170 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 31578 306638 85222 0 2 0 syz-executor4051834110 14456 287386 96596 0 2 0 syz-executor4051834110 89631 87844 36327 0 2 0 syz-executor4051834110 85222 435585 14134 0 3 0x80 nanoslp syz-executor4051834110 36327 278314 14134 0 2 0x480 syz-executor4051834110 15301 265878 14134 0 2 0x480 syz-executor4051834110 52147 154101 14134 0 2 0x480 syz-executor4051834110 51780 105348 14134 0 2 0x480 syz-executor4051834110 25818 205935 14134 0 2 0 syz-executor4051834110 30021 490049 14134 0 2 0x480 syz-executor4051834110 96596 126570 14134 0 2 0x480 syz-executor4051834110 14134 434983 6337 0 3 0x82 nanoslp syz-executor4051834110 6337 171446 29594 0 3 0x10008a sigsusp ksh 29594 26632 42805 0 3 0x9a kqread sshd 36199 216677 1 0 3 0x100083 ttyin getty 42805 282991 1 0 3 0x88 kqread sshd 23125 254627 79699 73 3 0x1100090 kqread syslogd 79699 428858 1 0 3 0x100082 netio syslogd 680 520398 1 0 3 0x100080 kqread resolvd 53921 17600 78311 77 3 0x100092 kqread dhcpleased 89096 257871 78311 77 3 0x100092 kqread dhcpleased 78311 347970 1 0 3 0x80 kqread dhcpleased 49524 270572 0 0 3 0x14200 bored smr 92440 165649 0 0 3 0x14200 pgzero zerothread 34617 448343 0 0 3 0x14200 aiodoned aiodoned 78855 290627 0 0 3 0x14200 syncer update 23003 214005 0 0 3 0x14200 cleaner cleaner 38663 93304 0 0 3 0x14200 reaper reaper 73685 271769 0 0 3 0x14200 pgdaemon pagedaemon 72055 255687 0 0 3 0x14200 bored viomb 16122 209071 0 0 3 0x40014200 acpi0 acpi0 46882 242477 0 0 3 0x14200 bored softnet3 24485 269841 0 0 3 0x14200 bored softnet2 52385 412612 0 0 3 0x14200 bored softnet1 18791 425362 0 0 3 0x14200 bored softnet0 49993 205776 0 0 3 0x14200 bored systqmp 18321 169154 0 0 3 0x14200 bored systq 58123 448768 0 0 3 0x40014200 tmoslp softclock 62434 511529 0 0 3 0x40014200 idle0 1 364270 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10138 6382K 6413K 166960K 11216 0 pcb 15 10K 10K 166960K 15 0 rtable 58 1K 2K 166960K 110 0 pf 12 6K 6K 166960K 12 0 ifaddr 11 5K 5K 166960K 11 0 ifgroup 17 1K 1K 166960K 17 0 counters 22 16K 16K 166960K 22 0 ioctlops 0 0K 2K 166960K 21 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1174 73K 74K 166960K 1188 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 1 0K 0K 166960K 1 0 proc 55 58K 59K 166960K 246 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 11 0K 0K 166960K 11 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 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 243 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 114 6K 6K 166960K 11187 0 UVM aobj 3 2K 2K 166960K 3 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 3 0K 0K 166960K 3 0 temp 1 6748K 6812K 166960K 361143 0 kqueue 11 16K 18K 166960K 24 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 20 0 17 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 144 33 0 20 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpqe 32 59 0 59 1 0 1 1 0 8 1 tcpcb 808 8 0 5 1 0 1 1 0 8 0 arp 88 2 0 0 1 0 1 1 0 8 0 inpcb 360 26 0 20 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 97 0 0 7 0 7 7 0 8 0 art_table 32 98 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 19338 0 14621 295 0 295 295 0 8 0 ffsino 240 19338 0 14621 278 0 278 278 0 8 0 nchpl 144 37427 0 35843 60 0 60 60 0 8 1 uvmvnodes 80 6228 0 0 128 0 128 128 0 8 0 vnodes 216 6228 0 0 346 0 346 346 0 8 0 namei 1024 84834 0 84832 2 0 2 2 0 8 1 kstatmem 264 6 0 0 1 0 1 1 0 8 0 scxspl 216 92546 0 92546 8 0 8 8 1 8 8 plimitpl 152 16 0 10 1 0 1 1 0 8 0 sigapl 424 9270 0 9226 6 0 6 6 0 8 1 knotepl 120 75288 0 75259 2 0 2 2 0 8 1 kqueuepl 184 20 0 13 1 0 1 1 0 8 0 pipepl 288 87 0 84 1 0 1 1 0 8 0 fdescpl 432 9254 0 9229 4 0 4 4 0 8 1 filepl 120 27977 0 27922 3 0 3 3 0 8 1 lockfpl 104 17908 0 17906 1 0 1 1 0 8 0 lockfspl 48 8453 0 8451 1 0 1 1 0 8 0 sessionpl 144 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 104 67 0 56 1 0 1 1 0 8 0 zombiepl 144 9230 0 9226 1 0 1 1 0 8 0 processpl 1072 9270 0 9226 4 0 4 4 0 8 1 procpl 680 9270 0 9226 4 0 4 4 0 8 0 sockpl 488 79 0 57 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 10 0 10 1 0 1 1 0 8 1 mcl2k 2048 16567 0 16528 30 17 13 30 0 8 7 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 50726 0 50683 16 5 11 16 0 8 7 bufpl 280 20954 0 14695 448 0 448 448 0 8 0 anonpl 24 256935 0 254845 24 0 24 24 0 188 11 amapchunkpl 152 17813 0 17605 9 0 9 9 0 158 0 amappl16 200 14553 0 14542 5 0 5 5 0 8 4 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 115 0 106 1 0 1 1 0 8 0 amappl13 176 10 0 10 1 0 1 1 0 8 1 amappl12 168 800 0 780 1 0 1 1 0 8 0 amappl11 160 64 0 54 1 0 1 1 0 8 0 amappl10 152 30 0 30 1 0 1 1 0 8 1 amappl9 144 142 0 142 1 0 1 1 0 8 1 amappl8 136 39 0 37 1 0 1 1 0 8 0 amappl7 128 93 0 83 1 0 1 1 0 8 0 amappl6 120 114 0 109 1 0 1 1 0 8 0 amappl5 112 99 0 91 1 0 1 1 0 8 0 amappl4 104 9276 0 9250 1 0 1 1 0 8 0 amappl3 96 2321 0 2274 2 0 2 2 0 8 0 amappl2 88 9551 0 9501 2 0 2 2 0 8 0 amappl1 80 35725 0 35266 11 0 11 11 0 8 0 amappl 88 10916 0 10840 2 0 2 2 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 9254 0 9229 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9254 0 9229 1 0 1 1 0 8 0 vmmpekpl 168 26126 0 26107 1 0 1 1 0 8 0 vmmpepl 168 258385 0 257188 57 0 57 57 0 357 4 vmsppl 352 9253 0 9229 3 0 3 3 0 8 0 rwobjpl 24 32831 0 25926 42 0 42 42 0 8 0 pdppl 4096 18514 0 18458 118 58 60 64 0 8 4 pvpl 32 791454 0 786624 52 0 52 52 0 265 12 pmappl 216 9253 0 9229 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 762 0 80 20 0 20 20 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace memcpy() at memcpy+0x19 ufs_inactive(ffff80002a690d18) at ufs_inactive+0x229 sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffffd8068b196f8,ffff80002a62f008) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd8068b196f8) at vrele+0xcd sys/kern/vfs_subr.c:827 fdfree(ffff80002a62f008) at fdfree+0x1f4 sys/kern/kern_descrip.c:1210 exit1(ffff80002a62f008,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199 sys_exit(ffff80002a62f008,ffff80002a690fb0,ffff80002a690f00) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002a690fb0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f49b1104d80, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace memcpy() at memcpy+0x19 ufs_inactive(ffff80002a690d18) at ufs_inactive+0x229 sys/ufs/ufs/ufs_inode.c:95 VOP_INACTIVE(fffffd8068b196f8,ffff80002a62f008) at VOP_INACTIVE+0xbf sys/kern/vfs_vops.c:489 vrele(fffffd8068b196f8) at vrele+0xcd sys/kern/vfs_subr.c:827 fdfree(ffff80002a62f008) at fdfree+0x1f4 sys/kern/kern_descrip.c:1210 exit1(ffff80002a62f008,0,0,1) at exit1+0x367 sys/kern/kern_exit.c:199 sys_exit(ffff80002a62f008,ffff80002a690fb0,ffff80002a690f00) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002a690fb0) at syscall+0x751 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f49b1104d80, count: -9