uvm_fault(0xfffffd8078753a28, 0x2aa0, 0, 2) -> e kernel: page fault trap, code=2 Stopped at copyout+0x57: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *368184 38908 0 0 0x4000000 0 syz-executor copyout() at copyout+0x57 syscall(ffff80003ca73270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca73270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3a9e34ba00, count: 12 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(0xfffffd8078753a28, 0x2aa0, 0, 2) -> e ddb> trace copyout() at copyout+0x57 syscall(ffff80003ca73270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca73270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3a9e34ba00, count: -3 ddb> show registers rdi 0x2aa0 __ALIGN_SIZE+0x1aa0 rsi 0xffff80003ca72fa0 rbp 0xffff80003ca731a0 rbx 0xa8a5 __ALIGN_SIZE+0x98a5 rdx 0xffff80003ca6e000 rcx 0x4 rax 0x20 r8 0x7f7fffffc000 r9 0 r10 0xee7c316231933618 r11 0xffffffff82b8d7a0 copy_fault r12 0x2 r13 0x16 r14 0xffff80003ca72fa0 r15 0xffff80003ca73270 rip 0xffffffff82b8d6c7 copyout+0x57 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff80003ca72ef0 ss 0x10 copyout+0x57: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syz-executor) tid=368184 pid=38908 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a91f260,0xffff80003c97dcc0 process=0xffff80003ca43628 user=0xffff80003ca6e000, vmspace=0xfffffd8078753a28 estcpu=36, cpticks=22, pctcpu=0.5, user=0, sys=22, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 51652 62580 54572 0 2 0 syz-executor 51652 58982 54572 0 3 0x4000080 pipewr syz-executor 51652 306395 54572 0 2 0x4000000 syz-executor 61025 119444 3119 0 2 0 syz-executor 61025 186588 3119 0 3 0x4000080 fsleep syz-executor 29111 284570 77039 0 3 0x80 nanoslp syz-executor 29111 17936 77039 0 3 0x4000080 kqsel syz-executor 29111 330915 77039 0 3 0x4000080 fsleep syz-executor 29111 500884 77039 0 3 0x4000080 fsleep syz-executor 38908 215683 12829 0 3 0x80 nanoslp syz-executor 38908 154527 12829 0 3 0x4000080 fsleep syz-executor 38908 127245 12829 0 3 0x4000080 fsleep syz-executor *38908 368184 12829 0 7 0x4000000 syz-executor 25741 2626 4450 0 3 0x80 nanoslp syz-executor 25741 416940 4450 0 3 0x4000080 fifow syz-executor 25741 86922 4450 0 3 0x4000080 fsleep syz-executor 37909 473826 21761 0 3 0x90 nanoslp syz-executor 37909 143888 21761 0 3 0x4000090 fifor syz-executor 37909 63528 21761 0 3 0x4000090 fifor syz-executor 37909 430254 21761 0 3 0x4000090 fsleep syz-executor 24713 187892 13732 0 2 0xc80 syz-executor 24713 206513 13732 0 3 0x4000080 ttyin syz-executor 95894 54499 1 0 3 0x100083 ttyin getty 79101 68998 0 0 3 0x14280 nfsidl nfsio 65528 474986 0 0 3 0x14280 nfsidl nfsio 33620 416677 0 0 3 0x14280 nfsidl nfsio 69095 117153 0 0 3 0x14280 nfsidl nfsio 76362 222477 0 0 3 0x14280 nfsidl nfsio 34619 60879 0 0 3 0x14280 nfsidl nfsio 99001 67699 0 0 3 0x14280 nfsidl nfsio 55885 424384 0 0 3 0x14280 nfsidl nfsio 25084 24534 0 0 3 0x14280 nfsidl nfsio 99826 302976 0 0 3 0x14280 nfsidl nfsio 73223 414862 0 0 3 0x14280 nfsidl nfsio 2020 93542 0 0 3 0x14280 nfsidl nfsio 21372 428037 0 0 3 0x14280 nfsidl nfsio 31829 404237 0 0 3 0x14280 nfsidl nfsio 1220 418157 0 0 3 0x14280 nfsidl nfsio 68070 50752 0 0 3 0x14280 nfsidl nfsio 35905 248038 0 0 3 0x14280 nfsidl nfsio 68276 156629 0 0 3 0x14280 nfsidl nfsio 62666 63110 0 0 3 0x14280 nfsidl nfsio 33873 111435 0 0 3 0x14280 nfsidl nfsio 4450 521424 34032 0 3 0x82 nanoslp syz-executor 56867 330037 93161 0 3 0x82 sbwait sshd-session 13732 42914 34032 0 2 0xc82 syz-executor 15610 36401 0 0 3 0x14200 bored sosplice 8271 36943 34032 0 2 0x2 syz-executor 12829 208100 34032 0 3 0x82 nanoslp syz-executor 77039 260593 34032 0 3 0x82 nanoslp syz-executor 3119 141584 34032 0 2 0xc82 syz-executor 54572 254014 34032 0 3 0x82 nanoslp syz-executor 21761 246258 34032 0 2 0xc82 syz-executor 34032 115141 66452 0 3 0x82 kqread syz-executor 66452 267859 66630 0 3 0x10008a sigsusp ksh 66630 167677 64851 0 3 0x98 kqread sshd-session 64851 17074 93161 0 3 0x92 kqread sshd-session 93161 44496 1 0 3 0x88 kqread sshd 86098 160514 38258 73 3 0x1100090 kqread syslogd 38258 26868 1 0 3 0x100082 sbwait syslogd 13220 317894 1 0 3 0x100080 kqread resolvd 3893 1511 72641 77 3 0x100092 kqread dhcpleased 33536 214739 72641 77 3 0x100092 kqread dhcpleased 72641 232196 1 0 3 0x80 kqread dhcpleased 45166 271446 0 0 3 0x14200 bored smr 32937 302362 0 0 2 0x14200 zerothread 72940 340794 0 0 3 0x14200 aiodoned aiodoned 14364 459403 0 0 3 0x14200 syncer update 23317 306354 0 0 3 0x14200 cleaner cleaner 31058 31506 0 0 3 0x14200 reaper reaper 65805 27020 0 0 3 0x14200 pgdaemon pagedaemon 52039 480202 0 0 3 0x14200 bored viomb 75983 329960 0 0 3 0x40014200 acpi0 acpi0 34551 513977 0 0 3 0x14200 bored softnet7 31894 438920 0 0 3 0x14200 bored softnet6 58719 466479 0 0 3 0x14200 bored softnet5 25268 365017 0 0 3 0x14200 bored softnet4 33950 25135 0 0 3 0x14200 bored softnet3 85068 378304 0 0 3 0x14200 bored softnet2 33692 455862 0 0 3 0x14200 bored softnet1 54149 358098 0 0 3 0x14200 bored softnet0 73688 72837 0 0 3 0x14200 bored systqmp 17828 201819 0 0 3 0x14200 bored systq 86817 405569 0 0 2 0x40014200 softclock 28039 3857 0 0 3 0x40014200 idle0 1 396962 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 11167K 11336K 166960K 12517 0 pcb 17 17K 18K 166960K 525 0 rtable 214 11K 11K 166960K 651 0 pf 38 14K 17K 166960K 144 0 ifaddr 41 7K 8K 166960K 105 0 ifgroup 58 2K 2K 166960K 188 0 sysctl 4 1K 9K 166960K 20 0 counters 35 18K 18K 166960K 160 0 ioctlops 0 0K 4K 166960K 485 0 iov 0 0K 20K 166960K 184 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1474 93K 93K 166960K 2780 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 30 0 VM map 2 1K 1K 166960K 2 0 sem 24 11K 11K 166960K 110 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 98K 166960K 1270 0 sigio 0 0K 0K 166960K 19 0 proc 60 59K 91K 166960K 687 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 190 0 in_multi 84 6K 7K 166960K 183 0 ether_multi 1 0K 0K 166960K 19 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 738 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 251 162K 183K 166960K 12755 0 UVM aobj 131 6K 6K 166960K 137 0 pinsyscall 40 80K 92K 166960K 2364 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 84 0 NDP 14 0K 2K 166960K 75 0 temp 78 8647K 8718K 166960K 124184 0 kqueue 19 30K 32K 166960K 254 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 120 117 0 114 1 0 1 1 0 8 0 rtentry 136 206 0 126 4 0 4 4 0 8 0 unpcb 144 1141 0 1116 6 0 6 6 0 8 5 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 4 0 4 1 0 1 1 0 8 1 tcpcb 736 606 0 596 13 3 10 13 0 8 8 arp 88 16 0 4 1 0 1 1 0 8 0 ipq 40 5 0 0 1 0 1 1 0 8 0 ipqe 40 6 0 0 1 0 1 1 0 8 0 inpcb 328 1687 0 1670 12 2 10 12 0 8 8 ip6q 72 7 0 3 1 0 1 1 0 8 0 ip6af 40 6 0 6 1 0 1 1 0 8 1 nd6 104 27 0 11 1 0 1 1 0 8 0 pkpcb 40 74 0 74 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 111 0 109 1 0 1 1 0 8 0 pppxif 1384 5 0 5 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pftag 88 6 0 6 1 0 1 1 0 8 1 pfstkey 128 3 0 3 1 0 1 1 0 8 1 pfstate 384 2 0 2 1 0 1 1 0 8 1 pfrule 1344 4 0 4 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 688 0 302 30 0 30 30 0 8 4 art_table 40 693 0 302 5 0 5 5 0 8 0 art_node 32 205 0 133 2 0 2 2 0 8 1 sysvmsgpl 40 22 0 12 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 105 0 83 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 4043 0 2535 95 0 95 95 0 8 0 ffsino 256 4043 0 2535 95 0 95 95 0 8 0 nchpl 144 5898 0 4204 63 0 63 63 0 8 0 rtmask 32 10 0 10 1 0 1 1 0 8 1 uvmvnodes 80 4817 0 0 99 0 99 99 0 8 0 vnodes 216 4817 0 0 268 0 268 268 0 8 0 namei 1024 21815 0 21814 2 0 2 2 0 8 1 kstatmem 264 110 0 82 3 0 3 3 0 8 1 scsiplug 72 9 0 9 1 0 1 1 0 8 1 scxspl 216 27492 0 27492 8 0 8 8 1 8 8 plimitpl 152 257 0 239 1 0 1 1 0 8 0 sigapl 424 1568 0 1497 9 0 9 9 0 8 0 knotepl 120 281515 0 281441 28 15 13 23 0 8 8 kqueuepl 184 458 0 441 4 0 4 4 0 8 3 pipepl 304 379 0 351 8 0 8 8 0 8 5 fdescpl 448 1525 0 1495 5 0 5 5 0 8 1 filepl 120 11836 0 11562 19 3 16 19 0 8 7 lockfpl 104 779 0 777 2 0 2 2 0 8 1 lockfspl 48 250 0 248 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 53 0 36 1 0 1 1 0 8 0 ucredpl 104 2455 0 2442 1 0 1 1 0 8 0 zombiepl 144 1497 0 1497 1 0 1 1 0 8 1 processpl 1152 1568 0 1497 6 0 6 6 0 8 0 procpl 664 3249 0 3163 8 0 8 8 0 8 0 sosppl 168 7 0 7 1 0 1 1 0 8 1 sockpl 552 3057 0 3012 15 2 13 13 0 8 9 mcl64k 65536 103 0 102 3 0 3 3 0 8 2 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 16 0 15 1 0 1 1 0 8 0 mcl4k 4096 3954 0 3897 14 0 14 14 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 1882 0 1877 2 0 2 2 0 8 1 mtagpl 96 7 0 5 1 0 1 1 0 8 0 mbufpl 256 18450 0 18254 30 6 24 30 0 8 8 bufpl 280 13152 0 6924 446 0 446 446 0 8 1 anonpl 24 265942 0 258241 79 0 79 79 0 187 1 amapchunkpl 152 45112 0 44535 34 0 34 34 0 158 8 amappl16 200 5384 0 5153 23 0 23 23 0 8 0 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 149 0 138 1 0 1 1 0 8 0 amappl13 176 12 0 12 1 0 1 1 0 8 1 amappl12 168 2168 0 2138 3 0 3 3 0 8 1 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 0 1 1 0 8 1 amappl9 144 256 0 255 1 0 1 1 0 8 0 amappl8 136 35 0 33 1 0 1 1 0 8 0 amappl7 128 142 0 130 1 0 1 1 0 8 0 amappl6 120 198 0 193 1 0 1 1 0 8 0 amappl5 112 123 0 116 1 0 1 1 0 8 0 amappl4 104 297 0 281 1 0 1 1 0 8 0 amappl3 96 8596 0 8485 4 0 4 4 0 8 0 amappl2 88 726 0 665 2 0 2 2 0 8 0 amappl1 80 13631 0 13000 15 0 15 15 0 8 0 amappl 88 11820 0 11642 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 255 0 255 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 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 1525 0 1495 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1525 0 1495 1 0 1 1 0 8 0 vmmpekpl 168 13246 0 13201 3 0 3 3 0 8 0 vmmpepl 168 102054 0 99837 108 0 108 108 0 357 4 vmsppl 368 1524 0 1495 4 0 4 4 0 8 1 rwobjpl 40 32798 0 26688 62 0 62 62 0 8 0 pdppl 4096 3056 0 2990 102 34 68 78 0 8 2 pvpl 32 700552 0 687086 158 0 158 158 0 265 8 pmappl 216 1524 0 1495 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 410 0 43 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace copyout() at copyout+0x57 syscall(ffff80003ca73270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca73270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3a9e34ba00, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace copyout() at copyout+0x57 syscall(ffff80003ca73270) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ca73270) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe3a9e34ba00, count: -3