uvm_fault(0xffffffff8385df40, 0xffff80000149504a, 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 *389422 68525 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9631c0,0,ffff80003c963130,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001492f00,ffff80003c963268,ffff80003c9631c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e160100,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd806e160100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003c963418,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94bca8,7,ffff80003c963510,808,ffff80003c9635b0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94bca8,ffff80003c963660,ffff80003c9635b0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963660) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963660) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9557be13fc0, 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(0xffffffff8385df40, 0xffff80000149504a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9631c0,0,ffff80003c963130,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001492f00,ffff80003c963268,ffff80003c9631c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e160100,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd806e160100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003c963418,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94bca8,7,ffff80003c963510,808,ffff80003c9635b0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94bca8,ffff80003c963660,ffff80003c9635b0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963660) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963660) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9557be13fc0, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c963010 rbx 0xde rdx 0 rcx 0xffff800001494f60 rax 0xfffffd806e1608e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xc5c8f5c6ffe7e212 r11 0x7ceaa70cde6ed46c r12 0x1b r13 0xfffffd806e160800 r14 0xfffffd806945d810 r15 0xffff800000039058 rip 0xffffffff82a082e4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c962f90 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=389422 pid=68525 tcnt=4 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=0xffff80003c94a2b8,0xffff80003c94a560 process=0xffff8000ffffb198 user=0xffff80003c95e000, vmspace=0xfffffd806ba16460 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 68525 113293 83794 0 2 0 syz-executor *68525 389422 83794 0 7 0x4000000 syz-executor 68525 65440 83794 0 3 0x4000080 fsleep syz-executor 68525 151222 83794 0 3 0x4000080 fsleep syz-executor 10670 400699 91088 0 2 0 syz-executor 10670 266395 91088 0 3 0x4000080 fsleep syz-executor 96494 467945 11747 0 2 0x2 ndp 11747 503352 46605 0 3 0x10008a sigsusp sh 10117 55439 81813 0 2 0x2 syz-executor 83794 106740 81813 0 2 0xc82 syz-executor 46605 337733 81813 0 3 0x82 wait syz-executor 62624 334575 81813 0 2 0x2 syz-executor 66314 343711 81813 0 2 0x2 syz-executor 91088 186677 81813 0 2 0xc82 syz-executor 20056 519799 81813 0 2 0x2 syz-executor 50775 158204 81813 0 2 0x2 syz-executor 81813 17525 33779 0 3 0x82 kqread syz-executor 33779 274101 82880 0 3 0x10008a sigsusp ksh 82880 220025 3558 0 3 0x98 kqread sshd-session 3558 329332 20845 0 3 0x92 kqread sshd-session 86034 420791 1 0 3 0x100083 ttyin getty 20845 522843 1 0 3 0x88 kqread sshd 42179 286251 39997 73 3 0x1100090 kqread syslogd 39997 192131 1 0 3 0x100082 sbwait syslogd 14254 212724 1 0 3 0x100080 kqread resolvd 19339 320577 82903 77 3 0x100092 kqread dhcpleased 75775 394262 82903 77 3 0x100092 kqread dhcpleased 82903 150620 1 0 3 0x80 kqread dhcpleased 7627 381825 0 0 3 0x14200 bored smr 83388 478510 0 0 2 0x14200 zerothread 83980 501027 0 0 3 0x14200 aiodoned aiodoned 49575 49426 0 0 3 0x14200 syncer update 73340 459341 0 0 3 0x14200 cleaner cleaner 80656 485603 0 0 3 0x14200 reaper reaper 91738 464588 0 0 3 0x14200 pgdaemon pagedaemon 57355 453648 0 0 3 0x14200 bored viomb 42772 292834 0 0 3 0x40014200 acpi0 acpi0 14712 385973 0 0 3 0x14200 bored softnet0 9896 381899 0 0 3 0x14200 smrbar systqmp 75185 129551 0 0 3 0x14200 bored systq 89931 513550 0 0 3 0x40014200 tmoslp softclock 93075 347126 0 0 3 0x40014200 idle0 1 107839 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 10166 11056K 11056K 166960K 11250 0 pcb 17 12K 12K 166960K 18 0 rtable 214 7K 7K 166960K 276 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 32 17K 17K 166960K 32 0 ioctlops 0 0K 2K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1339 84K 84K 166960K 1355 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 97K 166960K 137 0 proc 57 58K 124K 166960K 472 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 348 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 188 151K 160K 166960K 2782 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 35 70K 96K 166960K 1168 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 34 8634K 8698K 166960K 3679 0 kqueue 13 20K 20K 166960K 21 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 37 0 33 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 31 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 7 0 2 1 0 1 1 0 8 0 arp 96 10 0 0 1 0 1 1 0 8 0 inpcb 328 56 0 48 2 0 2 2 0 8 1 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 112 16 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 256 437 0 0 28 0 28 28 0 8 0 art_table 40 439 0 0 5 0 5 5 0 8 0 art_node 32 96 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1549 0 43 95 0 95 95 0 8 0 ffsino 256 1549 0 43 95 0 95 95 0 8 0 nchpl 144 1734 0 50 63 0 63 63 0 8 0 vnodes 216 1632 0 0 91 0 91 91 0 8 0 namei 1024 5073 0 5072 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6197 0 6197 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 414 0 375 6 0 6 6 0 8 0 knotepl 120 3134 0 3087 2 0 2 2 0 8 0 kqueuepl 184 19 0 10 1 0 1 1 0 8 0 pipepl 304 100 0 72 3 0 3 3 0 8 0 fdescpl 448 401 0 375 5 0 5 5 0 8 0 filepl 120 1290 0 1076 7 0 7 7 0 8 0 lockfpl 104 8 0 6 1 0 1 1 0 8 0 lockfspl 48 5 0 3 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 64 0 53 1 0 1 1 0 8 0 zombiepl 144 375 0 375 1 0 1 1 0 8 1 processpl 1152 414 0 375 4 0 4 4 0 8 0 procpl 664 424 0 381 5 0 5 5 0 8 0 sockpl 552 124 0 97 3 0 3 3 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2428 0 2375 15 0 15 15 0 8 6 mcl2k 2048 152 0 146 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3735 0 3593 9 0 9 9 0 8 0 bufpl 280 2811 0 117 193 0 193 193 0 8 0 anonpl 24 100556 0 97807 23 0 23 23 0 187 3 amapchunkpl 152 8182 0 7837 26 0 26 26 0 158 7 amappl16 200 2006 0 1993 5 0 5 5 0 8 4 amappl15 192 10 0 10 1 0 1 1 0 8 1 amappl14 184 102 0 92 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 0 1 1 0 8 1 amappl12 168 1015 0 989 3 0 3 3 0 8 1 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 0 1 1 0 8 1 amappl9 144 263 0 263 1 0 1 1 0 8 1 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 93 0 83 1 0 1 1 0 8 0 amappl6 120 170 0 166 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 265 0 250 1 0 1 1 0 8 0 amappl3 96 1152 0 1086 3 0 3 3 0 8 0 amappl2 88 620 0 555 2 0 2 2 0 8 0 amappl1 80 7903 0 7374 13 0 13 13 0 8 0 amappl 88 2148 0 2026 4 0 4 4 0 92 0 uvmvnodes 80 1632 0 0 34 0 34 34 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 401 0 375 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 401 0 375 1 0 1 1 0 8 0 vmmpekpl 168 4761 0 4718 2 0 2 2 0 8 0 vmmpepl 168 32296 0 30727 80 0 80 80 0 357 2 vmsppl 368 400 0 375 4 0 4 4 0 8 0 rwobjpl 40 13731 0 11309 26 0 26 26 0 8 0 pdppl 4096 808 0 750 96 14 82 82 0 8 24 pvpl 32 209624 0 202492 67 0 67 67 0 265 0 pmappl 216 400 0 375 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 361 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9631c0,0,ffff80003c963130,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001492f00,ffff80003c963268,ffff80003c9631c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e160100,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd806e160100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003c963418,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94bca8,7,ffff80003c963510,808,ffff80003c9635b0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94bca8,ffff80003c963660,ffff80003c9635b0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963660) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963660) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9557be13fc0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806945d810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9631c0,0,ffff80003c963130,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001492f00,ffff80003c963268,ffff80003c9631c0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e160100,ffff800010fdf9e0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e0,fffffd806e160100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e0,0,ffff80003c963418,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94bca8,7,ffff80003c963510,808,ffff80003c9635b0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94bca8,ffff80003c963660,ffff80003c9635b0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963660) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963660) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9557be13fc0, count: -10