uvm_fault(0xffffffff8288e4d0, 0xffff800018cdf000, 0, 2) -> d kernel: page fault trap, code=0 Stopped at memcpy+0x15: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *233245 67584 0 0x2 0 0 syz-executor.0 memcpy() at memcpy+0x15 ufs_inactive(ffff8000231310a8) at ufs_inactive+0x25f sys/ufs/ufs/ufs_inode.c:110 VOP_INACTIVE(fffffd8070061db8,ffff8000230dc008) at VOP_INACTIVE+0xb7 sys/kern/vfs_vops.c:505 vput(fffffd8070061db8) at vput+0xad sys/kern/vfs_subr.c:779 vn_closefile(fffffd806a629540,ffff8000230dc008) at vn_closefile+0xdd sys/kern/vfs_vnops.c:626 fdrop(fffffd806a629540,ffff8000230dc008) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806a629540,ffff8000230dc008) at closef+0x117 sys/kern/kern_descrip.c:1263 syscall(ffff800023131310) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab00, 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(0xffffffff8288e4d0, 0xffff800018cdf000, 0, 2) -> d ddb> trace memcpy() at memcpy+0x15 ufs_inactive(ffff8000231310a8) at ufs_inactive+0x25f sys/ufs/ufs/ufs_inode.c:110 VOP_INACTIVE(fffffd8070061db8,ffff8000230dc008) at VOP_INACTIVE+0xb7 sys/kern/vfs_vops.c:505 vput(fffffd8070061db8) at vput+0xad sys/kern/vfs_subr.c:779 vn_closefile(fffffd806a629540,ffff8000230dc008) at vn_closefile+0xdd sys/kern/vfs_vnops.c:626 fdrop(fffffd806a629540,ffff8000230dc008) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806a629540,ffff8000230dc008) at closef+0x117 sys/kern/kern_descrip.c:1263 syscall(ffff800023131310) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab00, count: -9 ddb> show registers rdi 0xffff800018cdf000 rsi 0xfffffd806a5efb00 rbp 0xffff800023131030 rbx 0x2 rdx 0x100 rcx 0x20 rax 0x669 r8 0xffffffffffffffff r9 0x4 r10 0x653f39baae08a09b r11 0xffff800018cdf000 r12 0xfffffd807131c5a8 r13 0xfffffd807554bed0 r14 0 r15 0xffff8000006b5800 rip 0xffffffff81b2e2f5 memcpy+0x15 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800023130fc8 ss 0x10 memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syz-executor.0) pid=233245 stat=onproc flags process=2 proc=0 pri=79, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000230dcfc8,0xffff80002165cd30 process=0xffff800021677b78 user=0xffff80002312c000, vmspace=0xfffffd8065a37de0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 46516 82277 19028 0 2 0 syz-executor.1 17559 298476 81383 0 2 0 syz-executor.2 21029 46980 94809 0 2 0 syz-executor.3 *67584 233245 36053 0 7 0x2 syz-executor.0 19028 151587 36053 0 3 0x82 nanoslp syz-executor.1 81383 252261 36053 0 2 0x2 syz-executor.2 94809 504024 36053 0 3 0x82 nanoslp syz-executor.3 94160 96275 1 0 3 0x100083 ttyin getty 83803 125727 0 0 3 0x14280 nfsidl nfsio 33983 492284 0 0 3 0x14280 nfsidl nfsio 19456 150329 0 0 3 0x14280 nfsidl nfsio 10688 353086 0 0 3 0x14280 nfsidl nfsio 88021 412623 0 0 3 0x14280 nfsidl nfsio 99864 355701 0 0 3 0x14280 nfsidl nfsio 94531 356104 0 0 3 0x14280 nfsidl nfsio 33370 303929 0 0 3 0x14280 nfsidl nfsio 6712 203700 0 0 3 0x14280 nfsidl nfsio 72914 223980 0 0 3 0x14280 nfsidl nfsio 33494 516264 0 0 3 0x14280 nfsidl nfsio 1843 275918 0 0 3 0x14280 nfsidl nfsio 16189 502240 0 0 3 0x14280 nfsidl nfsio 25710 202094 0 0 3 0x14280 nfsidl nfsio 41967 442622 0 0 3 0x14280 nfsidl nfsio 22647 289682 0 0 3 0x14280 nfsidl nfsio 9250 147186 0 0 3 0x14280 nfsidl nfsio 42878 495488 0 0 3 0x14280 nfsidl nfsio 54040 29393 0 0 3 0x14280 nfsidl nfsio 11146 514440 0 0 3 0x14280 nfsidl nfsio 9085 449817 0 0 3 0x14200 bored sosplice 36053 290414 44018 0 3 0x82 thrsleep syz-fuzzer 36053 6886 44018 0 3 0x4000082 nanoslp syz-fuzzer 36053 90989 44018 0 3 0x4000082 thrsleep syz-fuzzer 36053 343924 44018 0 3 0x4000082 thrsleep syz-fuzzer 36053 264546 44018 0 3 0x4000082 thrsleep syz-fuzzer 36053 62398 44018 0 3 0x4000082 kqread syz-fuzzer 36053 60742 44018 0 3 0x4000082 thrsleep syz-fuzzer 44018 234040 75875 0 3 0x10008a sigsusp ksh 75875 410867 45720 0 3 0x9a poll sshd 45720 366970 1 0 3 0x88 poll sshd 46428 99959 4931 73 3 0x100090 kqread syslogd 4931 281406 1 0 3 0x100082 netio syslogd 97821 482161 1 0 3 0x100080 kqread resolvd 57049 285847 67060 77 3 0x100092 kqread dhcpleased 93834 521159 67060 77 3 0x100092 kqread dhcpleased 67060 132900 1 0 3 0x80 kqread dhcpleased 43333 189439 0 0 3 0x14200 bored smr 97597 500327 0 0 2 0x14200 zerothread 21804 240775 0 0 3 0x14200 aiodoned aiodoned 30474 424560 0 0 3 0x14200 syncer update 91890 367455 0 0 3 0x14200 cleaner cleaner 82358 440721 0 0 3 0x14200 reaper reaper 178 413416 0 0 3 0x14200 pgdaemon pagedaemon 66324 111872 0 0 3 0x14200 bored viomb 27321 464049 0 0 3 0x40014200 acpi0 acpi0 8325 902 0 0 3 0x14200 bored softnet 85521 493035 0 0 3 0x14200 bored systqmp 8775 323092 0 0 3 0x14200 bored systq 34129 254143 0 0 3 0x40014200 bored softclock 94958 469309 0 0 3 0x40014200 idle0 1 328819 0 0 3 0x80082 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 10184 6404K 7023K 78643K 29845 0 pcb 13 14K 16K 78643K 1407 0 rtable 201 19K 22K 78643K 5152 0 ifaddr 82 22K 23K 78643K 1792 0 sysctl 3 1K 1K 78643K 5 0 counters 23 16K 17K 78643K 196 0 ioctlops 0 0K 4K 78643K 2499 0 iov 0 0K 32K 78643K 1005 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1487 93K 94K 78643K 13076 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 73 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 825 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 9 29K 43K 78643K 9372 0 sigio 0 0K 0K 78643K 398 0 proc 59 55K 79K 78643K 2153 0 subproc 52 3K 3K 78643K 789 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 324 0 in_multi 52 3K 4K 78643K 1474 0 ether_multi 1 0K 0K 78643K 120 0 mrt 1 0K 0K 78643K 20 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 229 1023K 1023K 78643K 229 0 exec 0 0K 2K 78643K 3394 0 pfkey data 0 0K 1K 78643K 4 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 375 810K 826K 78643K 111954 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 648 0 NDP 11 0K 1K 78643K 393 0 temp 115 4221K 4345K 78643K 105931 0 kqueue 13 20K 24K 78643K 442 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 429 0 426 3 2 1 2 0 8 0 rtentry 112 1079 0 1021 3 1 2 3 0 8 0 unpcb 128 5104 0 5091 53 48 5 9 0 8 4 syncache 296 64 0 64 15 15 0 1 0 8 0 tcpqe 32 465 0 465 6 6 0 1 0 8 0 tcpcb 736 3151 0 3147 118 111 7 11 0 8 6 arp 88 126 0 116 1 0 1 1 0 8 0 ipq 40 69 0 69 8 7 1 1 0 8 1 ipqe 40 2188 0 2188 8 7 1 1 0 8 1 inpcb 304 9238 0 9231 148 144 4 14 0 8 3 rttmr 72 6 0 6 2 2 0 1 0 8 0 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 3 0 3 1 1 0 1 0 8 0 nd6 48 291 0 279 1 0 1 1 0 8 0 pkpcb 40 136 0 136 11 11 0 1 0 8 0 kcovpl 48 60 0 56 1 0 1 1 0 8 0 ppxss 1152 27 0 27 7 6 1 1 0 8 1 pfstscr 40 66 0 64 1 0 1 1 0 8 0 pfosfp 40 3 0 2 1 0 1 1 0 8 0 pfosfpen 112 3 0 0 1 0 1 1 0 8 0 pfrktable 1344 1119 0 1092 6 3 3 3 0 8 0 pftag 88 207 0 198 2 1 1 1 0 8 0 pfqueue 264 38 0 38 1 1 0 1 0 8 0 pfstitem 24 54 0 50 1 0 1 1 0 8 0 pfstkey 112 138 0 134 1 0 1 1 0 8 0 pfstate 320 69 0 67 1 0 1 1 0 8 0 pfrule 1360 1415 0 1150 25 2 23 23 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 5250 0 5009 41 24 17 19 0 8 0 art_table 32 5251 0 5009 3 0 3 3 0 8 0 art_node 16 1078 0 1029 1 0 1 1 0 8 0 sysvmsgpl 40 51 0 13 1 0 1 1 0 8 0 semapl 112 821 0 811 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 14845 0 13391 91 0 91 91 0 8 0 ffsino 240 14845 0 13391 86 0 86 86 0 8 0 nchpl 144 28841 0 27255 61 0 61 61 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 115042 0 115042 4 3 1 1 0 8 1 vcpupl 1984 51 0 1 7 0 7 7 0 8 0 vmpool 528 136 0 86 4 0 4 4 0 8 0 pfiaddrpl 120 708 0 607 14 10 4 4 0 8 0 scsiplug 72 8 0 8 3 3 0 1 0 8 0 scxspl 216 80568 0 80568 16 15 1 8 0 8 1 plimitpl 152 2239 0 2229 1 0 1 1 0 8 0 sigapl 424 9454 0 9400 8 1 7 7 0 8 0 futexpl 64 92503 0 92503 3 2 1 1 0 8 1 knotepl 112 4973 0 4923 2 0 2 2 0 8 0 kqueuepl 184 3109 0 3091 52 48 4 6 0 8 3 pipepl 304 2544 0 2528 68 62 6 9 0 8 4 fdescpl 432 9412 0 9392 3 0 3 3 0 8 0 filepl 120 82799 0 82653 119 108 11 14 0 8 6 lockfpl 104 2057 0 2055 4 3 1 2 0 8 0 lockfspl 48 693 0 691 1 0 1 1 0 8 0 sessionpl 144 78 0 66 1 0 1 1 0 8 0 pgrppl 48 99 0 87 1 0 1 1 0 8 0 ucredpl 96 15296 0 15285 1 0 1 1 0 8 0 zombiepl 144 9400 0 9400 2 1 1 1 0 8 1 processpl 1000 9454 0 9400 10 3 7 8 0 8 0 procpl 672 23465 0 23405 29 22 7 7 0 8 1 sosppl 168 58 0 58 9 9 0 1 0 8 0 sockpl 448 14915 0 14892 307 296 11 30 0 8 8 mcl64k 65536 505 0 505 13 12 1 1 0 8 1 mcl16k 16384 118 0 118 23 22 1 1 0 8 1 mcl12k 12288 250 0 250 25 24 1 1 0 8 1 mcl9k 9216 127 0 127 30 29 1 1 0 8 1 mcl8k 8192 510 0 510 21 20 1 1 0 8 1 mcl4k 4096 1004 0 1004 11 10 1 1 0 8 1 mcl2k2 2112 75 0 75 21 21 0 1 0 8 0 mcl2k 2048 96035 0 95971 46 36 10 22 0 8 0 mtagpl 96 1774 0 1774 23 16 7 12 0 8 7 mbufpl 256 228458 0 228178 254 214 40 81 0 8 8 bufpl 288 21838 0 15421 459 0 459 459 0 8 0 anonpl 24 2638164 0 2622870 283 163 120 142 0 188 1 amapchunkpl 152 299576 0 298964 106 76 30 42 0 158 1 amappl16 200 28595 0 27900 177 139 38 51 0 8 0 amappl15 192 998 0 998 5 4 1 1 0 8 1 amappl14 184 1133 0 1131 1 0 1 1 0 8 0 amappl13 176 986 0 985 1 0 1 1 0 8 0 amappl12 168 1227 0 1223 1 0 1 1 0 8 0 amappl11 160 554 0 542 1 0 1 1 0 8 0 amappl10 152 1627 0 1618 1 0 1 1 0 8 0 amappl9 144 2116 0 2114 1 0 1 1 0 8 0 amappl8 136 2624 0 2564 3 0 3 3 0 8 0 amappl7 128 1599 0 1589 1 0 1 1 0 8 0 amappl6 120 2338 0 2320 1 0 1 1 0 8 0 amappl5 112 9843 0 9828 1 0 1 1 0 8 0 amappl4 104 2982 0 2956 1 0 1 1 0 8 0 amappl3 96 2504 0 2488 1 0 1 1 0 8 0 amappl2 88 1609 0 1564 2 0 2 2 0 8 0 amappl1 80 167634 0 167203 12 1 11 12 0 8 0 amappl 88 110471 0 110270 6 0 6 6 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 9548 0 9478 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9548 0 9478 1 0 1 1 0 8 0 vmmpekpl 168 66229 0 66182 3 0 3 3 0 8 0 vmmpepl 168 878658 0 876548 422 299 123 139 0 357 14 vmsppl 272 9547 0 9478 6 1 5 5 0 8 0 rwobjpl 24 208364 0 200793 52 4 48 48 0 8 0 pdppl 4096 19102 0 19006 170 72 98 98 0 8 2 pvpl 32 4521590 0 4503787 467 280 187 242 0 265 1 pmappl 216 9547 0 9478 5 1 4 4 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1682 0 825 27 0 27 27 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace memcpy() at memcpy+0x15 ufs_inactive(ffff8000231310a8) at ufs_inactive+0x25f sys/ufs/ufs/ufs_inode.c:110 VOP_INACTIVE(fffffd8070061db8,ffff8000230dc008) at VOP_INACTIVE+0xb7 sys/kern/vfs_vops.c:505 vput(fffffd8070061db8) at vput+0xad sys/kern/vfs_subr.c:779 vn_closefile(fffffd806a629540,ffff8000230dc008) at vn_closefile+0xdd sys/kern/vfs_vnops.c:626 fdrop(fffffd806a629540,ffff8000230dc008) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806a629540,ffff8000230dc008) at closef+0x117 sys/kern/kern_descrip.c:1263 syscall(ffff800023131310) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab00, count: -9 ddb> machine ddbcpu 1 No such command ddb> trace memcpy() at memcpy+0x15 ufs_inactive(ffff8000231310a8) at ufs_inactive+0x25f sys/ufs/ufs/ufs_inode.c:110 VOP_INACTIVE(fffffd8070061db8,ffff8000230dc008) at VOP_INACTIVE+0xb7 sys/kern/vfs_vops.c:505 vput(fffffd8070061db8) at vput+0xad sys/kern/vfs_subr.c:779 vn_closefile(fffffd806a629540,ffff8000230dc008) at vn_closefile+0xdd sys/kern/vfs_vnops.c:626 fdrop(fffffd806a629540,ffff8000230dc008) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd806a629540,ffff8000230dc008) at closef+0x117 sys/kern/kern_descrip.c:1263 syscall(ffff800023131310) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab00, count: -9