uvm_fault(0xffffffff8395b818, 0xffff80000161a0aa, 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 *285826 93605 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038cd90d0,0,ffff800038cd9040,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff800038cd9178,ffff800038cd90d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8066070800,ffff800010fdfc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdfc10,fffffd8066070800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdfc10,0,ffff800038cd9328,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c90b778,3,ffff800038cd9420,808,ffff800038cd94c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c90b778,ffff800038cd9570,ffff800038cd94c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038cd9570) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038cd9570) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9b13d12ec60, 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(0xffffffff8395b818, 0xffff80000161a0aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038cd90d0,0,ffff800038cd9040,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff800038cd9178,ffff800038cd90d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8066070800,ffff800010fdfc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdfc10,fffffd8066070800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdfc10,0,ffff800038cd9328,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c90b778,3,ffff800038cd9420,808,ffff800038cd94c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c90b778,ffff800038cd9570,ffff800038cd94c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038cd9570) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038cd9570) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9b13d12ec60, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff800038cd8f20 rbx 0xde rdx 0 rcx 0xffff800001619fc0 rax 0xfffffd80660707e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x2a48f5e1012f6550 r11 0x7e2f42c0fbbce3aa r12 0x19 r13 0xfffffd8066070700 r14 0xfffffd8073557bc8 r15 0xffff8000002a2058 rip 0xffffffff8238e404 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800038cd8ea0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=285826 pid=93605 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=52, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c90ba10,0xffff80003c90b258 process=0xffff8000ffffa418 user=0xffff800038cd4000, vmspace=0xfffffd806d381018 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15605 477962 97187 0 2 0x10 syz-executor 15605 74753 97187 0 3 0x4000090 fsleep syz-executor 93605 113725 96623 0 2 0 syz-executor *93605 285826 96623 0 7 0x4000000 syz-executor 71308 462287 60165 0 2 0 syz-executor 71308 242555 60165 0 3 0x4000080 fsleep syz-executor 71862 401236 7270 0 2 0 syz-executor 71862 236886 7270 0 3 0x4000080 pipewr syz-executor 5914 227442 64402 0 2 0 syz-executor 5914 130927 64402 0 3 0x4000080 fsleep syz-executor 50654 338325 41262 0 2 0x2 syz-executor 7270 227738 41262 0 3 0x82 nanoslp syz-executor 64402 485042 41262 0 3 0x82 nanoslp syz-executor 60165 503498 41262 0 3 0x82 nanoslp syz-executor 53719 99548 41262 0 2 0x2 syz-executor 4152 265944 41262 0 2 0x2 syz-executor 97187 310442 41262 0 3 0x82 nanoslp syz-executor 96623 223584 41262 0 3 0x82 nanoslp syz-executor 41262 181111 79109 0 3 0x82 kqread syz-executor 79109 103589 6109 0 3 0x10008a sigsusp ksh 6109 436063 23115 0 3 0x98 kqread sshd-session 23115 50257 46562 0 3 0x92 kqread sshd-session 72442 179991 1 0 3 0x100083 ttyin getty 46562 225953 1 0 3 0x88 kqread sshd 58004 248220 17680 73 3 0x1100090 kqread syslogd 17680 443205 1 0 3 0x100082 sbwait syslogd 80893 43692 1 0 3 0x100080 kqread resolvd 97488 425830 96426 77 3 0x100092 kqread dhcpleased 6615 138384 96426 77 3 0x100092 kqread dhcpleased 96426 385525 1 0 3 0x80 kqread dhcpleased 18624 92212 0 0 3 0x14200 bored smr 51257 68182 0 0 2 0x14200 zerothread 23875 516881 0 0 3 0x14200 aiodoned aiodoned 37640 224162 0 0 3 0x14200 syncer update 26165 181996 0 0 3 0x14200 cleaner cleaner 27379 1537 0 0 3 0x14200 reaper reaper 47531 189796 0 0 3 0x14200 pgdaemon pagedaemon 32603 278972 0 0 3 0x14200 bored viomb 28799 435552 0 0 3 0x40014200 acpi0 acpi0 19868 19699 0 0 3 0x14200 bored softnet0 37425 80098 0 0 3 0x14200 smrbar systqmp 67818 25146 0 0 3 0x14200 bored systq 40068 501221 0 0 3 0x40014200 tmoslp softclock 505 223882 0 0 3 0x40014200 idle0 1 393700 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 11029 12102K 12184K 166960K 12130 0 pcb 17 12K 12K 166960K 18 0 rtable 246 8K 8K 166960K 372 0 pf 30 12K 12K 166960K 30 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1352 85K 85K 166960K 1427 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 146 0 proc 58 59K 100K 166960K 496 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 0 0K 0K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 31 148K 148K 166960K 31 0 exec 0 0K 1K 166960K 365 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 198 158K 167K 166960K 3038 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 36 72K 94K 166960K 1237 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 36 9066K 9130K 166960K 3889 0 kqueue 13 20K 24K 166960K 25 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 39 0 35 1 0 1 1 0 8 0 rtentry 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 33 0 18 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 9 0 5 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 63 0 56 2 0 2 2 0 8 1 nd6 112 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 112 0 8 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 2 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1571 0 114 92 0 92 92 0 8 0 ffsino 256 1571 0 114 92 0 92 92 0 8 0 nchpl 144 1778 0 85 63 0 63 63 0 8 0 vnodes 216 1723 0 0 96 0 96 96 0 8 0 namei 1024 5358 0 5356 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5882 0 5882 2 0 2 2 1 8 2 plimitpl 152 28 0 11 1 0 1 1 0 8 0 sigapl 424 439 0 399 6 0 6 6 0 8 0 knotepl 120 2907 0 2860 9 0 9 9 0 8 7 kqueuepl 184 21 0 12 1 0 1 1 0 8 0 pipepl 304 121 0 93 3 0 3 3 0 8 0 fdescpl 448 426 0 399 5 0 5 5 0 8 1 filepl 120 1563 0 1355 11 0 11 11 0 8 4 lockfpl 104 14 0 12 1 0 1 1 0 8 0 lockfspl 48 8 0 6 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 71 0 59 1 0 1 1 0 8 0 zombiepl 144 399 0 399 1 0 1 1 0 8 1 processpl 1152 439 0 399 4 0 4 4 0 8 0 procpl 664 459 0 414 5 0 5 5 0 8 0 sockpl 552 135 0 109 3 0 3 3 0 8 1 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2459 0 2406 14 0 14 14 0 8 7 mcl2k 2048 118 0 117 1 0 1 1 0 8 0 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 4083 0 3935 10 0 10 10 0 8 0 bufpl 280 2226 0 102 152 0 152 152 0 8 0 anonpl 24 98623 0 95748 23 0 23 23 0 187 3 amapchunkpl 152 8447 0 8053 17 0 17 17 0 158 0 amappl16 200 1848 0 1833 5 0 5 5 0 8 4 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 413 0 412 1 0 1 1 0 8 0 amappl13 176 113 0 103 1 0 1 1 0 8 0 amappl12 168 706 0 680 2 0 2 2 0 8 0 amappl11 160 18 0 18 1 0 1 1 0 8 1 amappl10 152 64 0 54 1 0 1 1 0 8 0 amappl9 144 272 0 272 1 0 1 1 0 8 1 amappl8 136 108 0 107 1 0 1 1 0 8 0 amappl7 128 144 0 132 1 0 1 1 0 8 0 amappl6 120 155 0 153 1 0 1 1 0 8 0 amappl5 112 92 0 85 1 0 1 1 0 8 0 amappl4 104 273 0 258 1 0 1 1 0 8 0 amappl3 96 1458 0 1368 3 0 3 3 0 8 0 amappl2 88 521 0 469 2 0 2 2 0 8 0 amappl1 80 9007 0 8471 13 0 13 13 0 8 0 amappl 88 2348 0 2212 4 0 4 4 0 92 0 uvmvnodes 80 95 0 0 2 0 2 2 0 8 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 426 0 399 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 426 0 399 1 0 1 1 0 8 0 vmmpekpl 168 5057 0 5022 2 0 2 2 0 8 0 vmmpepl 168 35788 0 34165 81 0 81 81 0 357 3 vmsppl 368 425 0 399 4 0 4 4 0 8 0 rwobjpl 40 13394 0 12507 11 0 11 11 0 8 0 pdppl 4096 858 0 798 96 14 82 82 0 8 22 pvpl 32 217068 0 209431 69 0 69 69 0 265 2 pmappl 216 425 0 399 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 357 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038cd90d0,0,ffff800038cd9040,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff800038cd9178,ffff800038cd90d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8066070800,ffff800010fdfc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdfc10,fffffd8066070800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdfc10,0,ffff800038cd9328,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c90b778,3,ffff800038cd9420,808,ffff800038cd94c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c90b778,ffff800038cd9570,ffff800038cd94c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038cd9570) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038cd9570) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9b13d12ec60, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8073557bc8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800038cd90d0,0,ffff800038cd9040,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001604700,ffff800038cd9178,ffff800038cd90d0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8066070800,ffff800010fdfc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdfc10,fffffd8066070800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdfc10,0,ffff800038cd9328,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c90b778,3,ffff800038cd9420,808,ffff800038cd94c0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c90b778,ffff800038cd9570,ffff800038cd94c0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038cd9570) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038cd9570) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9b13d12ec60, count: -10