uvm_fault(0xffffffff8396b6b8, 0xffff80000160f02a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *213947 91753 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd80681569a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80681569a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9457f0,0,ffff80003c945760,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5cf00,ffff80003c945898,ffff80003c9457f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806da5c700,ffff800001664478) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001664478,fffffd806da5c700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001664478,0,ffff80003c945a48,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7914d8,6,ffff80003c945b40,808,ffff80003c945be0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7914d8,ffff80003c945c90,ffff80003c945be0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c945c90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c945c90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x492becaddb0, count: 5 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(0xffffffff8396b6b8, 0xffff80000160f02a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd80681569a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80681569a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9457f0,0,ffff80003c945760,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5cf00,ffff80003c945898,ffff80003c9457f0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806da5c700,ffff800001664478) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001664478,fffffd806da5c700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001664478,0,ffff80003c945a48,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7914d8,6,ffff80003c945b40,808,ffff80003c945be0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7914d8,ffff80003c945c90,ffff80003c945be0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c945c90) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c945c90) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x492becaddb0, count: -10 ddb> show registers rdi 0xffff8000338de000 rsi 0x970 rbp 0xffff80003c945640 rbx 0xde rdx 0xffff8000338de000 rcx 0xffff80000160ef40 rax 0xfffffd806f2e69e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x8b75aef5a4d7d7f r11 0xa67654008818c782 r12 0x1e r13 0xfffffd806f2e6900 r14 0xfffffd80681569a8 r15 0xffff8000002a2058 rip 0xffffffff813e32b4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9455c0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=213947 pid=91753 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=0xffff80002a791ca0,0xffffffff83a59920 process=0xffff8000ffffba98 user=0xffff80003c940000, vmspace=0xfffffd806cd20a20 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91753 256639 70485 0 2 0 syz-executor *91753 213947 70485 0 7 0x4000000 syz-executor 64173 149901 77265 0 2 0 syz-executor 64173 158628 77265 0 3 0x4000080 piperd syz-executor 64173 133810 77265 0 3 0x4000080 fsleep syz-executor 64173 173969 77265 0 3 0x4000080 fsleep syz-executor 93508 66901 12662 0 2 0 syz-executor 93508 226849 12662 0 3 0x4000080 ttyin syz-executor 93508 314226 12662 0 3 0x4000080 fsleep syz-executor 71122 461363 86028 0 2 0 syz-executor 71122 282216 86028 0 3 0x4000080 fsleep syz-executor 71122 147819 86028 0 3 0x4000080 fsleep syz-executor 78346 37628 20898 0 3 0x80 nanoslp syz-executor 78346 264586 20898 0 3 0x4000080 piperd syz-executor 78346 53501 20898 0 3 0x4000080 fsleep syz-executor 4837 410646 63996 0 3 0x80 nanoslp syz-executor 4837 267708 63996 0 3 0x4000080 kqread syz-executor 4837 293645 63996 0 3 0x4000080 fsleep syz-executor 7410 376439 42285 0 3 0x80 nanoslp syz-executor 7410 403412 42285 0 3 0x4000080 msgwait syz-executor 26706 499966 51389 -1 3 0x90 nanoslp syz-executor 26706 231556 51389 -1 3 0x4000090 fsleep syz-executor 26706 346928 51389 -1 3 0x4000090 pipewr syz-executor 26706 403057 51389 -1 3 0x4000090 fsleep syz-executor 26706 365799 51389 -1 3 0x4000090 fsleep syz-executor 29988 266554 1 0 3 0x80 nanoslp init 51389 129689 84669 0 3 0x82 nanoslp syz-executor 77265 468080 84669 0 3 0x82 nanoslp syz-executor 86028 169142 84669 0 3 0x82 nanoslp syz-executor 70485 111726 84669 0 3 0x82 nanoslp syz-executor 12662 220731 84669 0 3 0x82 nanoslp syz-executor 42285 204535 84669 0 3 0x82 nanoslp syz-executor 63996 138041 84669 0 3 0x82 nanoslp syz-executor 20898 57177 84669 0 3 0x82 nanoslp syz-executor 84669 101971 1 0 3 0x82 kqread syz-executor 43597 519007 0 0 3 0x14200 bored smr 94088 54924 0 0 2 0x14200 zerothread 72176 429581 0 0 3 0x14200 aiodoned aiodoned 47841 373938 0 0 3 0x14200 syncer update 12580 193132 0 0 3 0x14200 cleaner cleaner 12067 334462 0 0 3 0x14200 reaper reaper 66319 243906 0 0 3 0x14200 pgdaemon pagedaemon 7254 147524 0 0 3 0x14200 bored viomb 56580 360114 0 0 3 0x40014200 acpi0 acpi0 20376 315584 0 0 3 0x14200 bored softnet0 83256 253877 0 0 3 0x14200 bored systqmp 79321 306004 0 0 3 0x14200 bored systq 5740 204346 0 0 3 0x40014200 tmoslp softclock 63988 521312 0 0 3 0x40014200 idle0 1 487649 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 11040 12228K 12393K 166960K 12371 0 pcb 51 15K 15K 166960K 92 0 rtable 228 7K 9K 166960K 391 0 pf 30 12K 20K 166960K 54 0 ifaddr 42 7K 7K 166960K 48 0 ifgroup 50 2K 2K 166960K 57 0 sysctl 4 1K 9K 166960K 8 0 counters 33 17K 18K 166960K 37 0 ioctlops 0 0K 4K 166960K 48 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 1 0K 0K 166960K 5 0 vnodes 1293 81K 82K 166960K 1464 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 8 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 65K 97K 166960K 232 0 proc 11 17K 124K 166960K 511 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 8 0 in_multi 99 7K 7K 166960K 105 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 7 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 368 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 153 79K 167K 166960K 3926 0 UVM aobj 10 3K 3K 166960K 10 0 pinsyscall 19 38K 96K 166960K 1318 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 5 0 NDP 11 0K 2K 166960K 29 0 temp 39 9066K 9164K 166960K 4897 0 kqueue 7 11K 25K 166960K 50 0 SYN cache 2 16K 16K 166960K 2 0 ddb>