login: uvm_fault(0xffffffff83a69c28, 0xffff800022a92600, 0, 2) -> d kernel: page fault trap, code=2 Stopped at memset+0x52: repe stosq %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND memset() at memset+0x52 ffs_write(ffff8000314b7980) at ffs_write+0xb9a sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd807b4cddb0,ffff8000314b7a18,23,fffffd8007ffd2d8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807b4cddb0,ffff8000314b7b50,40,0,1,9b768fb4d3d09c3f,0,1008,0) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:330 acct_process(ffff8000344b8020) at acct_process+0x7a2 sys/kern/kern_acct.c:246 exit1(ffff8000344b8020,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff8000344b8020,ffff8000314b7d80,ffff8000314b7cd0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000314b7d80) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314b7d80) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70cd4256aac0, 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(0xffffffff83a69c28, 0xffff800022a92600, 0, 2) -> d ddb> trace memset() at memset+0x52 ffs_write(ffff8000314b7980) at ffs_write+0xb9a sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd807b4cddb0,ffff8000314b7a18,23,fffffd8007ffd2d8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_rdwr(1,fffffd807b4cddb0,ffff8000314b7b50,40,0,1,9b768fb4d3d09c3f,0,1008,0) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:330 acct_process(ffff8000344b8020) at acct_process+0x7a2 sys/kern/kern_acct.c:246 exit1(ffff8000344b8020,0,0,1) at exit1+0x5c4 sys/kern/kern_exit.c:228 sys_exit(ffff8000344b8020,ffff8000314b7d80,ffff8000314b7cd0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000314b7d80) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314b7d80) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70cd4256aac0, count: -9 ddb> show registers rdi 0xffff800022a92600 rsi 0 rbp 0xffff8000314b78a0 rbx 0x600 rdx 0 rcx 0x40 rax 0 r8 0x200 r9 0xffff8000314b7800 r10 0xe45183b554cc12f9 r11 0xffff800022a92600 r12 0x600 r13 0x800 r14 0xfffffd807b4cddb0 r15 0x1 rip 0xffffffff82c808b2 memset+0x52 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff8000314b7698 ss 0x10 memset+0x52: repe stosq %es:(%rdi) ddb> show proc PROC (syz-executor) tid=384152 pid=83624 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000344b8020 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a7674d0,0xffff8000344b87f8 process=0xffff8000ffff0020 user=0xffff8000314b2000, vmspace=0xfffffd806cac2b90 estcpu=36, cpticks=5, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12579 277297 9320 0 2 0 syz-executor 12579 211144 9320 0 3 0x4000080 fsleep syz-executor 68057 100375 76732 0 2 0 syz-executor 68057 70920 76732 0 3 0x4000080 sbwait syz-executor 68057 487881 76732 0 3 0x4000080 fsleep syz-executor 8394 294215 56241 0 2 0 syz-executor 8394 72028 56241 0 3 0x4000080 fsleep syz-executor 35719 366946 0 0 3 0x14200 acct acct 97376 506931 56005 0 2 0xc80 syz-executor 97376 151598 56005 0 3 0x4000080 fsleep syz-executor 97376 226275 56005 0 3 0x4000080 pipewr syz-executor 21543 392528 0 0 3 0x14280 nfsidl nfsio 26501 188535 0 0 3 0x14280 nfsidl nfsio 49443 400393 0 0 3 0x14280 nfsidl nfsio 30003 224180 0 0 3 0x14280 nfsidl nfsio 9403 161395 0 0 3 0x14280 nfsidl nfsio 95965 396920 0 0 3 0x14280 nfsidl nfsio 51553 454007 0 0 3 0x14280 nfsidl nfsio 41497 168697 0 0 3 0x14280 nfsidl nfsio 56991 94226 0 0 3 0x14280 nfsidl nfsio 2600 363094 0 0 3 0x14280 nfsidl nfsio 16001 3327 0 0 3 0x14280 nfsidl nfsio 54519 358627 0 0 3 0x14280 nfsidl nfsio 70231 288307 0 0 3 0x14280 nfsidl nfsio 32735 436498 0 0 3 0x14280 nfsidl nfsio 355 501245 0 0 3 0x14280 nfsidl nfsio 7838 22739 0 0 3 0x14280 nfsidl nfsio 24263 102284 0 0 3 0x14280 nfsidl nfsio 58602 130739 0 0 3 0x14280 nfsidl nfsio 39110 58892 0 0 3 0x14280 nfsidl nfsio 53910 80921 0 0 3 0x14280 nfsidl nfsio 41641 127687 1 0 3 0x100083 ttyin getty 9320 170065 26032 0 2 0xc82 syz-executor 21138 159645 26032 0 2 0xc82 syz-executor 56241 495695 26032 0 2 0xc82 syz-executor 43886 31148 26032 0 2 0xc82 syz-executor 47379 106511 26032 0 3 0x82 nanoslp syz-executor 76732 217844 26032 0 2 0xc82 syz-executor 56005 125760 26032 0 3 0x82 nanoslp syz-executor 26032 219637 1 0 3 0x82 wait syz-executor 3620 258231 1 73 3 0x1100090 kqread syslogd 76878 517359 0 0 3 0x14200 bored smr 64830 113514 0 0 2 0x14200 zerothread 86894 51982 0 0 3 0x14200 aiodoned aiodoned 8585 417810 0 0 3 0x14200 syncer update 97067 307162 0 0 3 0x14200 cleaner cleaner 75703 247238 0 0 3 0x14200 reaper reaper 12176 114059 0 0 3 0x14200 pgdaemon pagedaemon 58476 390810 0 0 3 0x14200 bored viomb 61232 379615 0 0 3 0x40014200 acpi0 acpi0 78620 318736 0 0 3 0x14200 bored softnet0 85354 113845 0 0 3 0x14200 bored systqmp 80559 517574 0 0 3 0x14200 bored systq 56688 487365 0 0 3 0x40014200 tmoslp softclock 80465 39534 0 0 3 0x40014200 idle0 1 234147 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 11037 12234K 12434K 166960K 12934 0 pcb 17 17K 19K 166960K 191 0 rtable 226 8K 9K 166960K 447 0 pf 32 13K 19K 166960K 191 0 ifaddr 40 7K 7K 166960K 69 0 ifgroup 50 2K 2K 166960K 101 0 sysctl 3 1K 9K 166960K 13 0 counters 33 17K 18K 166960K 60 0 ioctlops 0 0K 4K 166960K 262 0 iov 1 4K 16K 166960K 100 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1388 87K 88K 166960K 2013 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 23 3K 3K 166960K 29 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 737 0 sigio 0 0K 0K 166960K 3 0 proc 21 25K 124K 166960K 574 0 subproc 72 4K 4K 166960K 73 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 54 0 in_multi 93 6K 7K 166960K 117 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 26 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 519 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 154 92K 166K 166960K 7923 0 UVM aobj 19 4K 4K 166960K 21 0 pinsyscall 21 42K 96K 166960K 1862 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 22 0 NDP 11 0K 2K 166960K 48 0 temp 75 9116K 9180K 166960K 30063 0 kqueue 3 4K 32K 166960K 127 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 89 0 88 1 0 1 1 0 8 0 rtentry 136 134 0 37 4 0 4 4 0 8 0 unpcb 144 570 0 566 4 0 4 4 0 8 3 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 205 0 204 4 0 4 4 0 8 3 arp 96 20 0 5 1 0 1 1 0 8 0 ipq