uvm_fault(0xfffffd806c2725b0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at _copyin+0x62: repe movsl (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *249164 41607 0 0 0x4000000 0 syz-executor _copyin() at _copyin+0x62 syscall(ffff80003c96dd80) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96dd80) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b0d826faa0, 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(0xfffffd806c2725b0, 0x0, 0, 1) -> e ddb> trace _copyin() at _copyin+0x62 syscall(ffff80003c96dd80) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96dd80) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b0d826faa0, count: -3 ddb> show registers rdi 0xffff80003c96dba0 rsi 0 rbp 0xffff80003c96dca0 rbx 0xffff80003c96dd80 rdx 0x4 rcx 0x1 rax 0x4 r8 0x7f7fffffc000 r9 0x1 r10 0x2186b82f9507c693 r11 0xffffffff82fabe00 copy_fault r12 0xffff80003c96dba0 r13 0x4 r14 0 r15 0xfffffd8066312b40 rip 0xffffffff82fabdc2 _copyin+0x62 cs 0x8 rflags 0x50202 acpi_pdirpa+0x3c073 rsp 0xffff80003c96db90 ss 0x10 _copyin+0x62: repe movsl (%rsi),%es:(%rdi) ddb> show proc PROC (syz-executor) tid=249164 pid=41607 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7e2f78,0xffffffff83962ae8 process=0xffff800036d14db0 user=0xffff80003c968000, vmspace=0xfffffd806c2725b0 estcpu=5, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 41607 110590 87101 0 2 0 syz-executor *41607 249164 87101 0 7 0x4000000 syz-executor 71584 460890 62723 0 2 0 syz-executor 71584 216314 62723 0 3 0x4000080 ttyout syz-executor 24157 267943 70552 0 2 0 syz-executor 24157 502765 70552 0 3 0x4000080 sbwait syz-executor 24157 143120 70552 0 3 0x4000080 fsleep syz-executor 55609 82531 65460 0 3 0x80 nanoslp syz-executor 55609 209256 65460 0 2 0x4000000 syz-executor 55609 317836 65460 0 3 0x4000080 fsleep syz-executor 55609 282564 65460 0 3 0x4000080 fsleep syz-executor 15161 71858 0 0 3 0x14200 bored sosplice 95621 475263 58106 0 2 0xc80 syz-executor 95621 432362 58106 0 3 0x4000080 ttyin syz-executor 95621 300810 58106 0 3 0x4000080 fsleep syz-executor 69008 111581 13411 0 3 0x82 sbwait sshd-session 58106 56010 54376 0 2 0xc82 syz-executor 30676 275228 54376 0 2 0x2 syz-executor 70552 12718 54376 0 2 0xc82 syz-executor 62723 351754 54376 0 3 0x82 nanoslp syz-executor 37134 455186 54376 0 2 0xc82 syz-executor 65460 242306 54376 0 3 0x82 nanoslp syz-executor 87101 503581 54376 0 2 0xc82 syz-executor 27324 444857 54376 0 2 0xc82 syz-executor 54376 409378 51779 0 3 0x82 kqread syz-executor 51779 261280 54757 0 3 0x10008a sigsusp ksh 54757 510954 77847 0 3 0x98 kqread sshd-session 77847 57341 13411 0 3 0x92 kqread sshd-session 73820 504924 1 0 3 0x100083 ttyin getty 13411 278190 1 0 3 0x88 kqread sshd 573 368376 40819 73 3 0x1100090 kqread syslogd 40819 414523 1 0 3 0x100082 sbwait syslogd 92110 358006 1 0 3 0x100080 kqread resolvd 76953 482772 42689 77 3 0x100092 kqread dhcpleased 96969 48097 42689 77 3 0x100092 kqread dhcpleased 42689 153423 1 0 3 0x80 kqread dhcpleased 88587 161307 0 0 3 0x14200 bored smr 85212 83071 0 0 2 0x14200 zerothread 24500 428462 0 0 3 0x14200 aiodoned aiodoned 6971 103551 0 0 3 0x14200 syncer update 49866 80556 0 0 3 0x14200 cleaner cleaner 77763 221088 0 0 3 0x14200 reaper reaper 81092 174035 0 0 3 0x14200 pgdaemon pagedaemon 88633 319434 0 0 3 0x14200 bored viomb 30125 296516 0 0 3 0x40014200 acpi0 acpi0 2732 502095 0 0 3 0x14200 bored softnet3 50248 444980 0 0 3 0x14200 bored softnet2 66590 244401 0 0 3 0x14200 bored softnet1 10416 489719 0 0 3 0x14200 bored softnet0 17860 202889 0 0 3 0x14200 bored systqmp 66959 68282 0 0 3 0x14200 bored systq 58666 331565 0 0 3 0x40014200 tmoslp softclock 97787 360078 0 0 3 0x40014200 idle0 1 261056 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 10192 11092K 11253K 166960K 11351 0 pcb 18 12K 12K 166960K 31 0 rtable 238 7K 7K 166960K 355 0 pf 31 13K 14K 166960K 40 0 ifaddr 42 7K 7K 166960K 46 0 ifgroup 50 2K 2K 166960K 54 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 18K 166960K 102 0 ioctlops 0 0K 4K 166960K 107 0 iov 0 0K 4K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1352 85K 85K 166960K 1409 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 208 0 sigio 0 0K 0K 166960K 3 0 proc 63 67K 116K 166960K 483 0 subproc 72 4K 4K 166960K 74 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 9 0 in_multi 99 7K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 354 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 241 172K 181K 166960K 3445 0 UVM aobj 4 2K 2K 166960K 5 0 pinsyscall 40 80K 96K 166960K 1230 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 11 0K 2K 166960K 29 0 temp 37 8678K 8742K 166960K 3987 0 kqueue 14 22K 26K 166960K 32 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 42 0 39 1 0 1 1 0 8 0 rtentry 136 111 0 1 4 0 4 4 0 8 0 unpcb 144 55 0 36 1 0 1 1 0 8 0 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 35 0 28 2 0 2 2 0 8 1 arp 88 18 0 0 1 0 1 1 0 8 0 inpcb 328 156 0 144 2 0 2 2 0 8 0 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 104 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 70 0 70 1 0 1 1 0 8 1 pfstkey 128 2 0 2 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 32 453 0 0 4 0 4 4 0 8 0 art_node 16 110 0 10 1 0 1 1 0 8 0 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1667 0 160 95 0 95 95 0 8 0 ffsino 248 1667 0 160 95 0 95 95 0 8 0 nchpl 144 1948 0 264 63 0 63 63 0 8 0 uvmvnodes 80 1783 0 0 37 0 37 37 0 8 0 vnodes 216 1783 0 0 100 0 100 100 0 8 0 namei 1024 5731 0 5731 2 0 2 2 0 8 2 kstatmem 264 26 0 4 2 0 2 2 0 8 0 scxspl 216 6150 0 6150 2 0 2 2 1 8 2 plimitpl 152 39 0 21 1 0 1 1 0 8 0 sigapl 424 485 0 438 7 0 7 7 0 8 1 knotepl 120 11412 0 11136 9 0 9 9 0 8 0 kqueuepl 184 72 0 29 3 0 3 3 0 8 0 pipepl 296 105 0 78 3 0 3 3 0 8 0 fdescpl 440 468 0 438 5 0 5 5 0 8 1 filepl 120 1724 0 1466 9 0 9 9 0 8 0 lockfpl 104 32 0 30 1 0 1 1 0 8 0 lockfspl 48 16 0 14 1 0 1 1 0 8 0 sessionpl 144 23 0 14 1 0 1 1 0 8 0 pgrppl 48 32 0 15 1 0 1 1 0 8 0 ucredpl 104 139 0 128 1 0 1 1 0 8 0 zombiepl 144 440 0 438 1 0 1 1 0 8 0 processpl 1160 485 0 438 4 0 4 4 0 8 0 procpl 656 597 0 541 6 0 6 6 0 8 1 sockpl 528 253 0 219 3 0 3 3 0 8 0 mcl64k 65536 9 0 9 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2493 0 2439 15 0 15 15 0 8 7 mcl2k 2048 205 0 203 1 0 1 1 0 8 0 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 4767 0 4613 16 0 16 16 0 8 6 bufpl 280 2374 0 114 162 0 162 162 0 8 0 anonpl 24 111444 0 108079 44 0 44 44 0 187 22 amapchunkpl 152 10332 0 9830 27 0 27 27 0 158 6 amappl16 200 2326 0 2306 14 4 10 14 0 8 8 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 105 0 94 1 0 1 1 0 8 0 amappl13 176 9 0 9 1 0 1 1 0 8 1 amappl12 168 1075 0 1045 3 0 3 3 0 8 1 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 0 1 1 0 8 1 amappl9 144 262 0 262 1 0 1 1 0 8 1 amappl8 136 43 0 42 1 0 1 1 0 8 0 amappl7 128 108 0 96 1 0 1 1 0 8 0 amappl6 120 168 0 164 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 286 0 272 1 0 1 1 0 8 0 amappl3 96 1652 0 1541 3 0 3 3 0 8 0 amappl2 88 615 0 552 2 0 2 2 0 8 0 amappl1 80 8439 0 7799 15 0 15 15 0 8 0 amappl 88 2799 0 2628 4 0 4 4 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 4 0 1 1 0 1 1 0 8 0 uaddrrnd 24 468 0 438 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 468 0 438 1 0 1 1 0 8 0 vmmpekpl 168 5487 0 5455 2 0 2 2 0 8 0 vmmpepl 168 37116 0 35140 94 0 94 94 0 357 5 vmsppl 360 467 0 438 4 0 4 4 0 8 1 rwobjpl 32 15136 0 12404 23 0 23 23 0 8 0 pdppl 4096 943 0 876 97 26 71 83 0 8 4 pvpl 32 244002 0 234462 112 0 112 112 0 265 32 pmappl 216 467 0 438 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 268 0 26 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace _copyin() at _copyin+0x62 syscall(ffff80003c96dd80) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96dd80) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b0d826faa0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace _copyin() at _copyin+0x62 syscall(ffff80003c96dd80) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c96dd80) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2b0d826faa0, count: -3