uvm_fault(0xffffffff82bcbd30, 0xffff8000093f2d00, 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 *432057 42813 73 0x1100010 0 0 syslogd memcpy() at memcpy+0x15 VOP_FSYNC(fffffd806efd01f8,fffffd807f7d7a28,1,ffff8000ffff95c8) at VOP_FSYNC+0xc5 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffff95c8,ffff8000216bed50,ffff8000216beda0) at sys_fsync+0x107 sys/kern/vfs_syscalls.c:2935 syscall(ffff8000216bee20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffba330, count: 10 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(0xffffffff82bcbd30, 0xffff8000093f2d00, 0, 2) -> d ddb> trace memcpy() at memcpy+0x15 VOP_FSYNC(fffffd806efd01f8,fffffd807f7d7a28,1,ffff8000ffff95c8) at VOP_FSYNC+0xc5 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffff95c8,ffff8000216bed50,ffff8000216beda0) at sys_fsync+0x107 sys/kern/vfs_syscalls.c:2935 syscall(ffff8000216bee20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffba330, count: -5 ddb> show registers rdi 0xffff8000093f2d00 rsi 0xfffffd806e5b9300 rbp 0xffff8000216bec50 rbx 0x2 rdx 0x100 rcx 0x20 rax 0x32c r8 0xffffffffffffffff r9 0x2 r10 0x9538c5a9e48e09a5 r11 0xffff8000093f2d00 r12 0xfffffd806e807970 r13 0xfffffd806f56d248 r14 0x1 r15 0xffff8000006b7800 rip 0xffffffff811d80d5 memcpy+0x15 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff8000216bebe8 ss 0x10 memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syslogd) pid=432057 stat=onproc flags process=1100010 proc=0 pri=17, usrpri=51, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff5b40,0xffff8000ffff9320 process=0xffff8000ffff2bd0 user=0xffff8000216b9000, vmspace=0xfffffd806f69bac8 estcpu=1, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 5997 6582 94540 0 2 0 syz-executor.5 17221 139550 3507 0 2 0 syz-executor.1 17221 432570 3507 0 2 0x4000000 syz-executor.1 25775 170498 98868 0 2 0 syz-executor.7 25775 118455 98868 0 3 0x4000080 fsleep syz-executor.7 35238 70020 57083 0 2 0x2 syz-executor.0 9381 164211 57083 0 3 0x82 nanoslp syz-executor.3 81335 98370 57083 0 2 0x2 syz-executor.6 94540 378335 57083 0 3 0x82 nanoslp syz-executor.5 56483 1066 0 0 3 0x14200 acct acct 95906 197300 57083 0 2 0x2 syz-executor.4 98315 422582 57083 0 2 0x2 syz-executor.2 34940 120146 1 0 3 0x100083 ttyin getty 98868 117556 57083 0 3 0x82 nanoslp syz-executor.7 75337 482439 0 0 3 0x14280 nfsidl nfsio 49429 505800 0 0 3 0x14280 nfsidl nfsio 22213 372561 0 0 3 0x14280 nfsidl nfsio 20297 481064 0 0 3 0x14280 nfsidl nfsio 38891 143191 0 0 3 0x14280 nfsidl nfsio 22935 465555 0 0 3 0x14280 nfsidl nfsio 62929 68672 0 0 3 0x14280 nfsidl nfsio 54073 11147 0 0 3 0x14280 nfsidl nfsio 45780 222738 0 0 3 0x14280 nfsidl nfsio 59419 326733 0 0 3 0x14280 nfsidl nfsio 65053 378404 0 0 3 0x14280 nfsidl nfsio 66398 369272 0 0 3 0x14280 nfsidl nfsio 48467 427571 0 0 3 0x14280 nfsidl nfsio 56589 58092 0 0 3 0x14280 nfsidl nfsio 6690 35766 0 0 3 0x14280 nfsidl nfsio 12671 230442 0 0 3 0x14280 nfsidl nfsio 32433 425919 0 0 3 0x14280 nfsidl nfsio 44160 323057 0 0 3 0x14280 nfsidl nfsio 95001 55322 0 0 3 0x14280 nfsidl nfsio 3738 85100 0 0 3 0x14280 nfsidl nfsio 3507 92785 57083 0 3 0x82 nanoslp syz-executor.1 20483 422491 0 0 3 0x14200 bored sosplice 57083 473087 65589 0 3 0x82 wait syz-fuzzer 57083 373206 65589 0 2 0x4000002 syz-fuzzer 57083 461621 65589 0 3 0x4000082 wait syz-fuzzer 57083 378267 65589 0 3 0x4000082 thrsleep syz-fuzzer 57083 61653 65589 0 3 0x4000082 wait syz-fuzzer 57083 141398 65589 0 3 0x4000082 wait syz-fuzzer 57083 491988 65589 0 3 0x4000082 thrsleep syz-fuzzer 57083 197559 65589 0 3 0x4000082 wait syz-fuzzer 57083 189760 65589 0 3 0x4000082 thrsleep syz-fuzzer 57083 264069 65589 0 3 0x4000082 thrsleep syz-fuzzer 57083 30536 65589 0 3 0x4000082 wait syz-fuzzer 57083 470292 65589 0 3 0x4000082 wait syz-fuzzer 57083 9745 65589 0 2 0x4000002 syz-fuzzer 57083 189592 65589 0 3 0x4000082 wait syz-fuzzer 65589 269202 24289 0 3 0x10008a sigsusp ksh 24289 283588 90612 0 3 0x9a kqread sshd 90612 429177 1 0 3 0x88 kqread sshd *42813 432057 81549 73 7 0x1100010 syslogd 81549 130627 1 0 3 0x100082 netio syslogd 47331 350320 1 0 3 0x100080 kqread resolvd 94438 140550 99480 77 3 0x100092 kqread dhcpleased 1082 73469 99480 77 3 0x100092 kqread dhcpleased 99480 403648 1 0 3 0x80 kqread dhcpleased 57881 8914 0 0 3 0x14200 bored smr 41723 399219 0 0 2 0x14200 zerothread 24667 389310 0 0 3 0x14200 aiodoned aiodoned 86213 289972 0 0 3 0x14200 syncer update 67626 464556 0 0 3 0x14200 cleaner cleaner 1748 70575 0 0 3 0x14200 reaper reaper 48321 436595 0 0 3 0x14200 pgdaemon pagedaemon 2607 350076 0 0 3 0x14200 bored viomb 28985 257128 0 0 3 0x40014200 acpi0 acpi0 4301 317311 0 0 3 0x14200 bored softnet 82662 336910 0 0 3 0x14200 bored softnet 49825 432259 0 0 3 0x14200 bored softnet 53228 514664 0 0 3 0x14200 bored softnet 92801 515683 0 0 3 0x14200 bored systqmp 46952 2626 0 0 3 0x14200 bored systq 33043 98658 0 0 3 0x40014200 bored softclock 2620 524250 0 0 3 0x40014200 idle0 1 164806 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 10243 6502K 8254K 78643K 75670 0 pcb 13 14K 16K 78643K 867 0 rtable 121 13K 15K 78643K 2688 0 ifaddr 62 19K 22K 78643K 480 0 sysctl 2 0K 0K 78643K 9 0 counters 25 17K 17K 78643K 155 0 ioctlops 0 0K 4K 78643K 2913 0 iov 0 0K 20K 78643K 565 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1592 100K 100K 78643K 28369 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 247 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 1561 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 81K 78643K 14015 0 sigio 0 0K 0K 78643K 221 0 proc 66 59K 83K 78643K 1570 0 subproc 104 6K 6K 78643K 507 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 418 0 in_multi 46 3K 7K 78643K 633 0 ether_multi 1 0K 0K 78643K 38 0 mrt 1 0K 0K 78643K 31 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 301 1341K 1341K 78643K 301 0 exec 0 0K 1K 78643K 1149 0 pfkey data 0 0K 0K 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 8 62K 64K 78643K 10 0 UVM amap 305 85K 103K 78643K 87439 0 UVM aobj 131 8K 8K 78643K 153 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 2089 0 NDP 9 0K 2K 78643K 174 0 temp 116 5769K 5898K 78643K 179241 0 kqueue 12 18K 30K 78643K 2401 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 1321 0 1318 17 14 3 3 0 8 2 rtentry 112 628 0 581 4 1 3 4 0 8 0 unpcb 144 7317 0 7304 85 79 6 6 0 8 5 syncache 296 49 0 49 15 15 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 112 0 112 6 6 0 1 0 8 0 tcpcb 776 4853 0 4849 215 211 4 14 0 8 3 arp 88 82 0 76 1 0 1 1 0 8 0 ipq 40 6 0 6 2 2 0 1 0 8 0 ipqe 40 10 0 10 2 2 0 1 0 8 0 inpcb 336 10645 0 10638 298 291 7 12 0 8 6 nd6 48 144 0 136 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 kcovpl 48 39 0 31 1 0 1 1 0 8 0 mppekey 1024 3 0 3 2 2 0 1 0 8 0 ppxss 1160 63 0 63 11 11 0 1 0 8 0 pppxif 1360 47 0 47 7 7 0 1 0 8 0 pfstscr 40 21 0 17 1 0 1 1 0 8 0 pfanchor 1280 892 510 380 48 5 43 43 0 8 0 pfstitem 24 17 0 10 1 0 1 1 0 8 0 pfstkey 128 40 0 35 1 0 1 1 0 8 0 pfstate 352 23 0 19 1 0 1 1 0 8 0 rttmr 136 10 0 10 4 4 0 1 0 8 0 art_heap8 4096 25 0 23 3 1 2 3 0 8 0 art_heap4 256 2930 0 2673 50 33 17 30 0 8 0 art_table 32 2955 0 2696 4 1 3 4 0 8 0 art_node 16 619 0 579 1 0 1 1 0 8 0 sysvmsgpl 40 34 0 22 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 1559 0 1549 1 0 1 1 0 8 0 shmpl 112 150 0 22 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 17032 0 15519 95 0 95 95 0 8 0 ffsino 240 17032 0 15519 90 0 90 90 0 8 0 nchpl 144 35079 0 33441 63 0 63 63 0 8 0 uvmvnodes 80 6460 0 0 132 0 132 132 0 8 0 vnodes 216 6460 0 0 359 0 359 359 0 8 0 namei 1024 144726 0 144725 5 4 1 3 0 8 0 vmpool 664 9 0 9 3 3 0 1 0 8 0 kstatmem 264 174 0 156 2 0 2 2 0 8 0 scsiplug 72 11 0 11 4 4 0 1 0 8 0 scxspl 216 107561 0 107561 19 18 1 8 0 8 1 plimitpl 152 3808 0 3793 1 0 1 1 0 8 0 sigapl 424 14275 0 14212 8 0 8 8 0 8 0 futexpl 64 164029 0 164028 3 2 1 1 0 8 0 knotepl 120 146862 0 146780 40 36 4 11 0 8 0 kqueuepl 184 4152 0 4144 49 48 1 7 0 8 0 pipepl 288 10828 0 10799 131 124 7 10 0 8 4 fdescpl 432 14236 0 14212 4 0 4 4 0 8 0 filepl 120 121642 0 121401 253 237 16 19 0 8 7 lockfpl 104 19937 0 19935 58 56 2 4 0 8 1 lockfspl 48 9446 0 9444 8 7 1 2 0 8 0 sessionpl 144 58 0 42 1 0 1 1 0 8 0 pgrppl 48 80 0 64 1 0 1 1 0 8 0 ucredpl 104 14645 0 14634 1 0 1 1 0 8 0 zombiepl 144 14213 0 14212 4 3 1 1 0 8 0 processpl 1008 14275 0 14212 11 2 9 9 0 8 0 procpl 696 33794 0 33716 29 19 10 10 0 8 1 sosppl 168 34 0 34 11 11 0 1 0 8 0 sockpl 456 19310 0 19284 639 626 13 29 0 8 8 mcl64k 65536 265 0 265 58 57 1 1 0 8 1 mcl16k 16384 156 0 156 50 49 1 1 0 8 1 mcl12k 12288 286 0 286 68 67 1 1 0 8 1 mcl9k 9216 146 0 146 45 44 1 1 0 8 1 mcl8k 8192 1311 0 1311 61 60 1 1 0 8 1 mcl4k 4096 1876 0 1876 49 48 1 1 0 8 1 mcl2k2 2112 77 0 77 46 45 1 1 0 8 1 mcl2k 2048 99803 0 99690 84 68 16 32 0 8 0 mtagpl 96 13593 0 13424 51 42 9 49 0 8 0 mbufpl 256 269679 0 269315 492 437 55 189 0 8 8 bufpl 288 24834 0 18356 463 0 463 463 0 8 0 anonpl 24 2937230 0 2919749 275 156 119 179 0 188 0 amapchunkpl 152 244701 0 244027 109 76 33 59 0 158 1 amappl16 200 46435 0 45817 155 121 34 42 0 8 0 amappl15 192 51 0 50 1 0 1 1 0 8 0 amappl14 184 282 0 268 2 0 2 2 0 8 0 amappl13 176 12 0 12 3 3 0 1 0 8 0 amappl12 168 781 0 778 1 0 1 1 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 64 0 55 1 0 1 1 0 8 0 amappl9 144 979 0 978 2 1 1 1 0 8 0 amappl8 136 399 0 312 4 0 4 4 0 8 0 amappl7 128 223 0 196 2 0 2 2 0 8 0 amappl6 120 330 0 313 2 1 1 2 0 8 0 amappl5 112 370 0 364 1 0 1 1 0 8 0 amappl4 104 902 0 871 2 1 1 2 0 8 0 amappl3 96 39048 0 39003 2 0 2 2 0 8 0 amappl2 88 15851 0 15778 3 1 2 3 0 8 0 amappl1 80 312596 0 311947 30 14 16 26 0 8 0 amappl 88 86484 0 86326 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 72 152 0 22 3 0 3 3 0 8 0 uaddrrnd 24 14245 0 14221 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 14245 0 14221 1 0 1 1 0 8 0 vmmpekpl 168 127000 0 126941 4 1 3 4 0 8 0 vmmpepl 168 1290682 0 1288148 388 247 141 181 0 357 8 vmsppl 344 14244 0 14221 3 0 3 3 0 8 0 rwobjpl 24 343717 0 335438 57 6 51 51 0 8 0 pdppl 4096 28496 0 28442 1059 995 64 72 0 8 10 pvpl 32 5818778 0 5796017 569 359 210 335 0 265 6 pmappl 216 14244 0 14221 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 3003 0 2178 28 0 28 28 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace memcpy() at memcpy+0x15 VOP_FSYNC(fffffd806efd01f8,fffffd807f7d7a28,1,ffff8000ffff95c8) at VOP_FSYNC+0xc5 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffff95c8,ffff8000216bed50,ffff8000216beda0) at sys_fsync+0x107 sys/kern/vfs_syscalls.c:2935 syscall(ffff8000216bee20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffba330, count: -5 ddb> machine ddbcpu 1 No such command ddb> trace memcpy() at memcpy+0x15 VOP_FSYNC(fffffd806efd01f8,fffffd807f7d7a28,1,ffff8000ffff95c8) at VOP_FSYNC+0xc5 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffff95c8,ffff8000216bed50,ffff8000216beda0) at sys_fsync+0x107 sys/kern/vfs_syscalls.c:2935 syscall(ffff8000216bee20) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:625 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffba330, count: -5