uvm_fault(0xffffffff83a3e3e8, 0xffff80000166806a, 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 * 45096 73921 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c919720,0,ffff80003c919690,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160d400,ffff80003c9197c8,ffff80003c919720,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079ec8b00,ffff8000015f8f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8f28,fffffd8079ec8b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8f28,0,ffff80003c919978,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0d0018,3,ffff80003c919a70,808,ffff80003c919b10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0d0018,ffff80003c919bc0,ffff80003c919b10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c919bc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c919bc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2ca88f1c440, 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(0xffffffff83a3e3e8, 0xffff80000166806a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c919720,0,ffff80003c919690,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160d400,ffff80003c9197c8,ffff80003c919720,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079ec8b00,ffff8000015f8f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8f28,fffffd8079ec8b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8f28,0,ffff80003c919978,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0d0018,3,ffff80003c919a70,808,ffff80003c919b10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0d0018,ffff80003c919bc0,ffff80003c919b10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c919bc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c919bc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2ca88f1c440, count: -10 ddb> show registers rdi 0xffff80002b8c4000 rsi 0x3d5 rbp 0xffff80003c919570 rbx 0xde rdx 0xffff80002b8c4000 rcx 0xffff800001667f80 rax 0xfffffd806bb70ee0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x76a7a387d3d6a3e3 r11 0xc18e0466d6be00fb r12 0x1e r13 0xfffffd806bb70e00 r14 0xfffffd80664ebb40 r15 0xffff8000002a2058 rip 0xffffffff82228bb4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9194f0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=45096 pid=73921 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=0xffff80002f0d14d8,0xffff80002f0d1cb0 process=0xffff8000ffffb198 user=0xffff80003c914000, vmspace=0xfffffd806ccd1b90 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 83938 391646 98619 0 2 0 syz-executor 83938 37625 98619 0 2 0x4000000 syz-executor 73921 375041 88294 0 2 0 syz-executor *73921 45096 88294 0 7 0x4000000 syz-executor 81693 108956 29498 0 2 0 syz-executor 81693 282269 29498 0 3 0x4000080 fsleep syz-executor 58779 305367 25822 0 2 0 syz-executor 58779 171259 25822 0 3 0x4000080 sbwait syz-executor 13922 17149 0 0 3 0x14200 acct acct 97541 82125 65471 0 2 0 syz-executor 97541 424392 65471 0 3 0x4000080 fsleep syz-executor 97541 453280 65471 0 3 0x4000080 fsleep syz-executor 70600 33626 57906 0 2 0xc80 syz-executor 70600 402629 57906 0 3 0x4000080 ttyin syz-executor 70600 177122 57906 0 3 0x4000080 sbwait syz-executor 70600 366492 57906 0 3 0x4000080 sbwait syz-executor 57906 448017 9939 0 2 0xc82 syz-executor 25822 284627 9939 0 3 0x82 nanoslp syz-executor 29498 160218 9939 0 2 0xc82 syz-executor 98619 23159 9939 0 2 0xc82 syz-executor 65471 354719 9939 0 2 0xc82 syz-executor 62375 12206 9939 0 2 0xc82 syz-executor 88294 147857 9939 0 2 0xc82 syz-executor 10474 464933 9939 0 2 0xc82 syz-executor 9939 77679 65436 0 3 0x82 kqread syz-executor 65436 282799 27744 0 3 0x10008a sigsusp ksh 27744 23552 8571 0 3 0x98 kqread sshd-session 8571 419496 15541 0 3 0x92 kqread sshd-session 47029 466571 1 0 3 0x100083 ttyin getty 15541 92914 1 0 3 0x88 kqread sshd 14400 307859 5538 73 3 0x1100090 kqread syslogd 5538 428418 1 0 3 0x100082 sbwait syslogd 3623 208883 1 0 3 0x100080 kqread resolvd 47399 397829 79044 77 3 0x100092 kqread dhcpleased 96105 97199 79044 77 3 0x100092 kqread dhcpleased 79044 48121 1 0 3 0x80 kqread dhcpleased 77193 350423 0 0 3 0x14200 bored smr 58464 49513 0 0 2 0x14200 zerothread 39380 50725 0 0 3 0x14200 aiodoned aiodoned 2947 205948 0 0 3 0x14200 syncer update 56822 276176 0 0 3 0x14200 cleaner cleaner 47960 478022 0 0 3 0x14200 reaper reaper 96935 113012 0 0 3 0x14200 pgdaemon pagedaemon 8839 71084 0 0 3 0x14200 bored viomb 40217 145737 0 0 3 0x40014200 acpi0 acpi0 74961 512781 0 0 3 0x14200 bored softnet0 50771 243547 0 0 3 0x14200 bored systqmp 79295 401609 0 0 3 0x14200 bored systq 92913 310614 0 0 3 0x40014200 tmoslp softclock 68047 63916 0 0 3 0x40014200 idle0 1 162101 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 11050 12114K 12328K 166960K 12313 0 pcb 17 12K 12K 166960K 37 0 rtable 258 9K 9K 166960K 384 0 pf 40 14K 16K 166960K 44 0 ifaddr 46 7K 7K 166960K 51 0 ifgroup 63 2K 2K 166960K 65 0 sysctl 3 1K 9K 166960K 7 0 counters 39 18K 18K 166960K 41 0 ioctlops 0 0K 4K 166960K 43 0 iov 2 16K 20K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1292 81K 82K 166960K 1397 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 4 0K 0K 166960K 68 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 193 0 sigio 0 0K 0K 166960K 1 0 proc 60 59K 124K 166960K 499 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 10 0 in_multi 99 7K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 371 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 227 151K 161K 166960K 3445 0 UVM aobj 5 2K 2K 166960K 6 0 pinsyscall 39 78K 96K 166960K 1279 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 15 0K 2K 166960K 32 0 temp 36 9066K 9146K 166960K 4227 0 kqueue 16 24K 24K 166960K 37 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 42 0 38 1 0 1 1 0 8 0 rtentry 136 113 0 1 4 0 4 4 0 8 0 unpcb 144 60 0 39 1 0 1 1 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpcb 736 26 0 21 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 102 0 94 3 1 2 2 0 8 0 nd6 112 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 0 1 0 1 1 0 8 0 ppxss 1072 6 0 2 1 0 1 1 0 8 0 pfstkey 128 1 0 1 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1360 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 454 0 0 29 0 29 29 0 8 0 art_table 40 456 0 0 5 0 5 5 0 8 0 art_node 32 113 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 112 66 0 64 1 0 1 1 0 8 0 shmpl 112 3 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1677 0 218 92 0 92 92 0 8 0 ffsino 256 1677 0 218 92 0 92 92 0 8 0 nchpl 144 1943 0 247 64 0 64 64 0 8 0 rtmask 32 1 0 0 1 0 1 1 0 8 0 vnodes 216 1779 0 0 99 0 99 99 0 8 0 namei 1024 6128 0 6128 2 1 1 2 0 8 1 kstatmem 264 32 0 2 3 0 3 3 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 6325 0 6325 2 1 1 2 1 8 1 plimitpl 152 33 0 15 1 0 1 1 0 8 0 sigapl 424 485 0 441 6 1 5 6 0 8 0 knotepl 120 4953 0 4902 2 0 2 2 0 8 0 kqueuepl 184 40 0 29 1 0 1 1 0 8 0 pipepl 304 124 0 96 3 0 3 3 0 8 0 fdescpl 448 471 0 441 5 1 4 5 0 8 0 filepl 120 1882 0 1649 8 0 8 8 0 8 0 lockfpl 104 33 0 30 1 0 1 1 0 8 0 lockfspl 48 17 0 14 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 104 125 0 114 1 0 1 1 0 8 0 zombiepl 144 443 0 441 2 1 1 1 0 8 0 processpl 1152 485 0 441 4 0 4 4 0 8 0 procpl 664 574 0 521 5 0 5 5 0 8 0 sockpl 552 206 0 173 3 0 3 3 0 8 0 mcl64k 65536 7 0 6 2 1 1 1 0 8 0 mcl16k 16384 3 0 3 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 7 0 7 2 1 1 1 0 8 1 mcl4k 4096 2563 0 2512 15 6 9 15 0 8 2 mcl2k 2048 170 0 170 3 0 3 3 0 8 3 mtagpl 96 5 0 4 2 1 1 1 0 8 0 mbufpl 256 4824 0 4662 16 1 15 15 0 8 0 bufpl 280 2385 0 106 163 0 163 163 0 8 0 anonpl 24 111389 0 107708 47 21 26 44 0 187 0 amapchunkpl 152 10002 0 9487 25 3 22 22 0 158 0 amappl16 200 2255 0 2230 15 13 2 15 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 409 0 408 1 0 1 1 0 8 0 amappl13 176 115 0 105 1 0 1 1 0 8 0 amappl12 168 711 0 682 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 66 0 56 1 0 1 1 0 8 0 amappl9 144 245 0 245 1 1 0 1 0 8 0 amappl8 136 112 0 110 1 0 1 1 0 8 0 amappl7 128 42 0 40 1 0 1 1 0 8 0 amappl6 120 348 0 338 1 0 1 1 0 8 0 amappl5 112 81 0 74 1 0 1 1 0 8 0 amappl4 104 436 0 402 2 1 1 2 0 8 0 amappl3 96 1571 0 1484 3 0 3 3 0 8 0 amappl2 88 553 0 492 2 0 2 2 0 8 0 amappl1 80 9396 0 8849 14 1 13 13 0 8 0 amappl 88 2747 0 2583 4 0 4 4 0 92 0 uvmvnodes 80 96 0 0 2 0 2 2 0 8 0 dma8192 8192 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 5 0 1 1 0 1 1 0 8 0 uaddrrnd 24 471 0 441 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 471 0 441 1 0 1 1 0 8 0 vmmpekpl 168 5522 0 5489 2 0 2 2 0 8 0 vmmpepl 168 38850 0 37024 95 10 85 88 0 357 4 vmsppl 368 470 0 441 4 1 3 4 0 8 0 rwobjpl 40 14384 0 13447 12 1 11 12 0 8 0 pdppl 4096 948 0 882 102 36 66 82 0 8 0 pvpl 32 246870 0 236436 127 37 90 113 0 265 3 pmappl 216 470 0 441 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 381 0 53 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c919720,0,ffff80003c919690,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160d400,ffff80003c9197c8,ffff80003c919720,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079ec8b00,ffff8000015f8f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8f28,fffffd8079ec8b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8f28,0,ffff80003c919978,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0d0018,3,ffff80003c919a70,808,ffff80003c919b10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0d0018,ffff80003c919bc0,ffff80003c919b10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c919bc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c919bc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2ca88f1c440, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd80664ebb40) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c919720,0,ffff80003c919690,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160d400,ffff80003c9197c8,ffff80003c919720,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079ec8b00,ffff8000015f8f28) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015f8f28,fffffd8079ec8b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f8f28,0,ffff80003c919978,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0d0018,3,ffff80003c919a70,808,ffff80003c919b10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0d0018,ffff80003c919bc0,ffff80003c919b10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c919bc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c919bc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2ca88f1c440, count: -10