uvm_fault(0xffffffff839be478, 0xffff80000149c02a, 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 * 97353 58401 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031d034e0,0,ffff800031d03450,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499000,ffff800031d03588,ffff800031d034e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e810500,ffff800010fdf9e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e8,fffffd806e810500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e8,0,ffff800031d03738,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f1240,3,ffff800031d03830,808,ffff800031d038d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f1240,ffff800031d03980,ffff800031d038d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d03980) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d03980) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfb51044ccc0, 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(0xffffffff839be478, 0xffff80000149c02a, 0, 1) -> e ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031d034e0,0,ffff800031d03450,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499000,ffff800031d03588,ffff800031d034e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e810500,ffff800010fdf9e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e8,fffffd806e810500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e8,0,ffff800031d03738,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f1240,3,ffff800031d03830,808,ffff800031d038d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f1240,ffff800031d03980,ffff800031d038d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d03980) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d03980) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfb51044ccc0, count: -10 ddb> show registers rdi 0xffff80002ccea000 rsi 0x94f rbp 0xffff800031d03330 rbx 0xde rdx 0xffff80002ccea000 rcx 0xffff80000149bf40 rax 0xfffffd807ba994e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x66e46c9f5194a3de r11 0xc04c63787896b9b8 r12 0x1a r13 0xfffffd807ba99400 r14 0xfffffd806b1fc898 r15 0xffff80000019f058 rip 0xffffffff817e8dd4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800031d032b0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=97353 pid=58401 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=0xffff80002f0f1770,0xffff80002f0f0fb8 process=0xffff8000ffffad18 user=0xffff800031cfe000, vmspace=0xfffffd806cb7eb90 estcpu=6, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 69987 22150 7629 0 2 0 syz-executor 37027 357420 12690 0 2 0 syz-executor 58401 459146 50490 0 2 0 syz-executor *58401 97353 50490 0 7 0x4000000 syz-executor 43345 300341 6166 0 2 0x100000 sh 96181 196584 97993 0 2 0 syz-executor 66905 508544 47933 0 2 0x100000 sh 59083 511902 97633 0 2 0x100002 ndp 6166 484942 55961 0 3 0x10008a sigsusp sh 9186 264887 25617 0 2 0 syz-executor 9186 479708 25617 0 3 0x4000080 fsleep syz-executor 47933 154164 8197 0 3 0x10008a sigsusp sh 97633 212474 54803 0 3 0x10008a sigsusp sh 54803 259096 44717 0 3 0x82 wait syz-executor 8197 201519 44717 0 3 0x82 wait syz-executor 55961 415222 44717 0 3 0x82 wait syz-executor 25617 363883 44717 0 3 0x82 nanoslp syz-executor 12690 145577 44717 0 3 0x82 nanoslp syz-executor 7629 272449 44717 0 3 0x82 nanoslp syz-executor 50490 172643 44717 0 2 0xc82 syz-executor 97993 159197 44717 0 2 0xc82 syz-executor 44717 473989 56357 0 3 0x82 kqread syz-executor 56357 197082 93071 0 3 0x10008a sigsusp ksh 93071 62653 7573 0 3 0x98 kqread sshd-session 7573 354052 31696 0 3 0x92 kqread sshd-session 53802 465010 1 0 3 0x100083 ttyin getty 31696 502564 1 0 3 0x88 kqread sshd 69351 176076 56977 73 3 0x1100090 kqread syslogd 56977 276365 1 0 3 0x100082 sbwait syslogd 4768 477936 1 0 3 0x100080 kqread resolvd 32084 442176 56676 77 3 0x100092 kqread dhcpleased 59052 66907 56676 77 3 0x100092 kqread dhcpleased 56676 135374 1 0 3 0x80 kqread dhcpleased 72071 364915 0 0 3 0x14200 bored smr 6556 117369 0 0 2 0x14200 zerothread 11473 422444 0 0 3 0x14200 aiodoned aiodoned 95750 39071 0 0 3 0x14200 syncer update 40316 344049 0 0 3 0x14200 cleaner cleaner 72867 186168 0 0 3 0x14200 reaper reaper 10961 436371 0 0 3 0x14200 pgdaemon pagedaemon 49519 506575 0 0 3 0x14200 bored viomb 61976 257530 0 0 3 0x40014200 acpi0 acpi0 71254 297647 0 0 3 0x14200 bored softnet0 38678 470712 0 0 3 0x14200 smrbar systqmp 74756 40430 0 0 3 0x14200 bored systq 72098 175552 0 0 3 0x40014200 tmoslp softclock 62007 82061 0 0 3 0x40014200 idle0 1 380369 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 10162 11041K 11058K 166960K 11249 0 pcb 17 12K 12K 166960K 18 0 rtable 240 7K 7K 166960K 354 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 2K 166960K 29 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1360 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 21 77K 97K 166960K 158 0 proc 57 58K 108K 166960K 471 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 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 358 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 202 161K 166K 166960K 3011 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 43 86K 96K 166960K 1233 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 8658K 8722K 166960K 3830 0 kqueue 13 20K 20K 166960K 22 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 36 0 31 1 0 1 1 0 8 0 rtentry 136 109 0 1 4 0 4 4 0 8 0 unpcb 144 32 0 17 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 62 0 55 2 0 2 2 0 8 1 nd6 112 21 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 256 450 0 0 29 0 29 29 0 8 0 art_table 40 452 0 0 5 0 5 5 0 8 0 art_node 32 109 0 8 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1580 0 79 94 0 94 94 0 8 0 ffsino 256 1580 0 79 94 0 94 94 0 8 0 nchpl 144 1794 0 114 63 0 63 63 0 8 0 vnodes 216 1662 0 0 93 0 93 93 0 8 0 namei 1024 5137 0 5137 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5761 0 5761 2 0 2 2 1 8 2 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 448 0 402 6 0 6 6 0 8 0 knotepl 120 3133 0 3086 2 0 2 2 0 8 0 kqueuepl 184 18 0 9 1 0 1 1 0 8 0 pipepl 304 113 0 86 3 0 3 3 0 8 0 fdescpl 448 435 0 402 5 0 5 5 0 8 1 filepl 120 1379 0 1174 7 0 7 7 0 8 0 lockfpl 104 11 0 9 1 0 1 1 0 8 0 lockfspl 48 6 0 4 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 144 402 0 402 1 0 1 1 0 8 1 processpl 1152 448 0 402 4 0 4 4 0 8 0 procpl 664 473 0 425 5 0 5 5 0 8 1 sockpl 552 130 0 103 3 0 3 3 0 8 1 mcl64k 65536 1 0 1 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 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 2387 0 2333 14 0 14 14 0 8 7 mcl2k 2048 186 0 185 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3981 0 3845 10 0 10 10 0 8 0 bufpl 280 2258 0 118 153 0 153 153 0 8 0 anonpl 24 98723 0 95906 23 0 23 23 0 187 5 amapchunkpl 152 8502 0 8141 16 0 16 16 0 158 0 amappl16 200 1877 0 1864 5 0 5 5 0 8 4 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 67 0 66 1 0 1 1 0 8 0 amappl13 176 420 0 416 1 0 1 1 0 8 0 amappl12 168 762 0 723 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 0 1 1 0 8 1 amappl10 152 46 0 36 1 0 1 1 0 8 0 amappl9 144 266 0 265 1 0 1 1 0 8 0 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 82 0 81 1 0 1 1 0 8 0 amappl6 120 266 0 251 1 0 1 1 0 8 0 amappl5 112 72 0 65 1 0 1 1 0 8 0 amappl4 104 381 0 358 1 0 1 1 0 8 0 amappl3 96 1340 0 1270 2 0 2 2 0 8 0 amappl2 88 542 0 477 2 0 2 2 0 8 0 amappl1 80 8821 0 8254 13 0 13 13 0 8 0 amappl 88 2326 0 2199 3 0 3 3 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 435 0 402 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 435 0 402 1 0 1 1 0 8 0 vmmpekpl 168 5186 0 5157 2 0 2 2 0 8 0 vmmpepl 168 35682 0 33926 77 0 77 77 0 357 0 vmsppl 368 434 0 402 4 0 4 4 0 8 1 rwobjpl 40 13144 0 12220 10 0 10 10 0 8 0 pdppl 4096 877 0 804 101 18 83 83 0 8 10 pvpl 32 216559 0 208862 65 0 65 65 0 265 2 pmappl 216 434 0 402 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 367 0 18 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031d034e0,0,ffff800031d03450,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499000,ffff800031d03588,ffff800031d034e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e810500,ffff800010fdf9e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e8,fffffd806e810500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e8,0,ffff800031d03738,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f1240,3,ffff800031d03830,808,ffff800031d038d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f1240,ffff800031d03980,ffff800031d038d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d03980) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d03980) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfb51044ccc0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff80000019f058,1,fffffd806b1fc898) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031d034e0,0,ffff800031d03450,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499000,ffff800031d03588,ffff800031d034e0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e810500,ffff800010fdf9e8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf9e8,fffffd806e810500,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf9e8,0,ffff800031d03738,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0f1240,3,ffff800031d03830,808,ffff800031d038d0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0f1240,ffff800031d03980,ffff800031d038d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031d03980) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031d03980) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfb51044ccc0, count: -10