uvm_fault(0xffffffff83975128, 0xffff80000149b00a, 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 * 83678 55900 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a925400,0,ffff80003a925370,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003a9254a8,ffff80003a925400,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805ba19000,ffff8000015766b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015766b0,fffffd805ba19000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015766b0,0,ffff80003a925658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a832558,3,ffff80003a925750,808,ffff80003a9257f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a832558,ffff80003a9258a0,ffff80003a9257f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a9258a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a9258a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa5b86c12690, 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(0xffffffff83975128, 0xffff80000149b00a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a925400,0,ffff80003a925370,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003a9254a8,ffff80003a925400,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805ba19000,ffff8000015766b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015766b0,fffffd805ba19000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015766b0,0,ffff80003a925658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a832558,3,ffff80003a925750,808,ffff80003a9257f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a832558,ffff80003a9258a0,ffff80003a9257f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a9258a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a9258a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa5b86c12690, count: -10 ddb> show registers rdi 0xffff800031508000 rsi 0x64f rbp 0xffff80003a925250 rbx 0xde rdx 0xffff800031508000 rcx 0xffff80000149af20 rax 0xfffffd805ba196e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xee78159bc59b0542 r11 0xef7d8bccee01d7f8 r12 0x23 r13 0xfffffd805ba19600 r14 0xfffffd806bbd0de8 r15 0xffff800000039058 rip 0xffffffff821cf3f4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a9251d0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=83678 pid=55900 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=0xffff80002a8334e8,0xffffffff83906680 process=0xffff8000ffff8d98 user=0xffff80003a920000, vmspace=0xfffffd806ba31740 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 55900 427503 70976 0 2 0 syz-executor *55900 83678 70976 0 7 0x4000000 syz-executor 2167 236268 18435 0 3 0x80 nanoslp syz-executor 2167 282541 18435 0 3 0x4000000 clonelk syz-executor 2167 120811 18435 0 3 0x4000080 fsleep syz-executor 47795 277560 30251 0 3 0x80 nanoslp syz-executor 47795 190966 30251 0 3 0x4000080 kqsel syz-executor 47795 371617 30251 0 3 0x4000080 fsleep syz-executor 87656 317938 15383 0 3 0x80 nanoslp syz-executor 87656 178703 15383 0 3 0x4000080 ttyin syz-executor 87656 247802 15383 0 3 0x4000080 fsleep syz-executor 18006 346122 0 0 3 0x14200 acct acct 29460 142541 0 0 3 0x14200 bored sosplice 41804 246683 41857 0 3 0x82 nanoslp syz-executor 18435 80717 41857 0 3 0x82 nanoslp syz-executor 48848 515042 41857 0 3 0x82 nanoslp syz-executor 30251 169892 41857 0 3 0x82 nanoslp syz-executor 43425 107475 41857 0 3 0x82 nanoslp syz-executor 70976 121208 41857 0 3 0x82 nanoslp syz-executor 78617 377025 41857 0 3 0x82 nanoslp syz-executor 15383 16066 41857 0 3 0x82 nanoslp syz-executor 41857 99771 28201 0 3 0x82 kqread syz-executor 28201 416465 83619 0 3 0x10008a sigsusp ksh 83619 519291 13919 0 3 0x98 kqread sshd-session 13919 86234 15779 0 3 0x92 kqread sshd-session 74686 53604 1 0 3 0x100083 ttyin getty 15779 479017 1 0 3 0x88 kqread sshd 83104 67646 31213 73 3 0x1100090 kqread syslogd 31213 470778 1 0 3 0x100082 sbwait syslogd 62237 299969 1 0 3 0x100080 kqread resolvd 3835 444085 9591 77 3 0x100092 kqread dhcpleased 97755 88013 9591 77 3 0x100092 kqread dhcpleased 9591 293782 1 0 3 0x80 kqread dhcpleased 74508 339929 0 0 3 0x14200 bored smr 6566 473642 0 0 2 0x14200 zerothread 36604 389641 0 0 3 0x14200 aiodoned aiodoned 63281 285486 0 0 3 0x14200 syncer update 3461 83201 0 0 3 0x14200 cleaner cleaner 9505 419324 0 0 3 0x14200 reaper reaper 35014 198712 0 0 3 0x14200 pgdaemon pagedaemon 96671 322448 0 0 3 0x14200 bored viomb 68805 37306 0 0 3 0x40014200 acpi0 acpi0 53622 371393 0 0 3 0x14200 bored softnet0 98040 72599 0 0 3 0x14200 bored systqmp 18841 201624 0 0 3 0x14200 bored systq 3826 71920 0 0 3 0x40014200 tmoslp softclock 9529 372417 0 0 3 0x40014200 idle0 1 416733 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 10202 11113K 11231K 166960K 11637 0 pcb 19 12K 12K 166960K 65 0 rtable 235 9K 9K 166960K 354 0 pf 33 13K 20K 166960K 71 0 ifaddr 43 7K 8K 166960K 68 0 ifgroup 55 2K 2K 166960K 93 0 sysctl 3 1K 9K 166960K 8 0 counters 33 17K 18K 166960K 190 0 ioctlops 0 0K 4K 166960K 204 0 iov 0 0K 12K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1380 87K 87K 166960K 1617 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 9 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 334 0 sigio 0 0K 0K 166960K 1 0 proc 60 59K 124K 166960K 524 0 subproc 72 4K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 28 0 in_multi 99 7K 7K 166960K 120 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 211 943K 943K 166960K 211 0 exec 0 0K 1K 166960K 387 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 248 155K 173K 166960K 4517 0 UVM aobj 9 2K 2K 166960K 10 0 pinsyscall 39 78K 96K 166960K 1397 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 12 0K 2K 166960K 44 0 temp 39 8634K 8710K 166960K 9054 0 kqueue 15 24K 29K 166960K 71 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 120 120 0 82 2 0 2 2 0 8 0 rtentry 136 120 0 25 4 0 4 4 0 8 0 unpcb 144 141 0 123 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 119 0 114 4 0 4 4 0 8 3 arp 96 13 0 1 1 0 1 1 0 8 0 inpcb 328 268 0 257 5 0 5 5 0 8 4 nd6 112 26 0 2 1 0 1 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 153 0 153 1 0 1 1 0 8 1 pppxif 1384 4 0 4 1 0 1 1 0 8 1 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pfrule 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 546 0 95 30 0 30 30 0 8 1 art_table 40 548 0 95 5 0 5 5 0 8 0 art_node 32 119 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 112 7 0 3 1 0 1 1 0 8 0 shmpl 112 7 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1975 0 474 95 0 95 95 0 8 0 ffsino 256 1975 0 474 95 0 95 95 0 8 0 nchpl 144 2440 0 753 63 0 63 63 0 8 0 rtmask 32 8 0 8 1 0 1 1 0 8 1 vnodes 216 2177 0 0 121 0 121 121 0 8 0 namei 1024 8067 0 8067 1 0 1 1 0 8 1 kstatmem 264 52 0 28 3 0 3 3 0 8 1 scxspl 216 10814 0 10814 8 0 8 8 1 8 8 plimitpl 152 118 0 102 1 0 1 1 0 8 0 sigapl 424 612 0 567 6 0 6 6 0 8 0 knotepl 120 12224 0 12169 15 5 10 15 0 8 8 kqueuepl 184 169 0 155 1 0 1 1 0 8 0 pipepl 304 122 0 95 3 0 3 3 0 8 0 fdescpl 448 597 0 567 5 0 5 5 0 8 1 filepl 120 3173 0 2907 13 0 13 13 0 8 4 lockfpl 104 65 0 62 1 0 1 1 0 8 0 lockfspl 48 29 0 26 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 67 0 51 1 0 1 1 0 8 0 ucredpl 104 586 0 574 1 0 1 1 0 8 0 zombiepl 144 571 0 567 1 0 1 1 0 8 0 processpl 1152 612 0 567 4 0 4 4 0 8 0 procpl 664 923 0 871 6 0 6 6 0 8 0 sockpl 552 535 0 468 8 0 8 8 0 8 2 mcl64k 65536 22 0 22 1 0 1 1 0 8 1 mcl16k 16384 6 0 6 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2690 0 2639 13 0 13 13 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 495 0 472 4 0 4 4 0 8 0 mtagpl 96 6 0 4 1 0 1 1 0 8 0 mbufpl 256 8486 0 6146 147 0 147 147 0 8 0 bufpl 280 5236 0 119 366 0 366 366 0 8 0 anonpl 24 128953 0 125678 45 0 45 45 0 187 19 amapchunkpl 152 14163 0 13618 32 0 32 32 0 158 11 amappl16 200 2648 0 2619 17 6 11 14 0 8 8 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 109 0 99 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 0 1 1 0 8 1 amappl12 168 1225 0 1195 3 0 3 3 0 8 1 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 25 0 25 1 0 1 1 0 8 1 amappl9 144 251 0 251 1 0 1 1 0 8 1 amappl8 136 24 0 23 1 0 1 1 0 8 0 amappl7 128 102 0 92 1 0 1 1 0 8 0 amappl6 120 190 0 187 1 0 1 1 0 8 0 amappl5 112 117 0 111 1 0 1 1 0 8 0 amappl4 104 267 0 252 1 0 1 1 0 8 0 amappl3 96 2265 0 2160 3 0 3 3 0 8 0 amappl2 88 889 0 817 2 0 2 2 0 8 0 amappl1 80 9041 0 8485 14 0 14 14 0 8 1 amappl 88 3818 0 3637 5 0 5 5 0 92 0 uvmvnodes 80 2177 0 0 45 0 45 45 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma2048 2048 2 0 2 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 9 0 1 1 0 1 1 0 8 0 uaddrrnd 24 597 0 567 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 597 0 567 1 0 1 1 0 8 0 vmmpekpl 168 6251 0 6207 3 0 3 3 0 8 0 vmmpepl 168 44589 0 42672 94 0 94 94 0 357 10 vmsppl 368 596 0 567 4 0 4 4 0 8 1 rwobjpl 40 17078 0 14021 31 0 31 31 0 8 0 pdppl 4096 1201 0 1134 97 30 67 83 0 8 0 pvpl 32 293191 0 283773 111 0 111 111 0 265 27 pmappl 216 596 0 567 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 508 0 30 14 0 14 14 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a925400,0,ffff80003a925370,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003a9254a8,ffff80003a925400,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805ba19000,ffff8000015766b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015766b0,fffffd805ba19000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015766b0,0,ffff80003a925658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a832558,3,ffff80003a925750,808,ffff80003a9257f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a832558,ffff80003a9258a0,ffff80003a9257f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a9258a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a9258a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa5b86c12690, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806bbd0de8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a925400,0,ffff80003a925370,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003a9254a8,ffff80003a925400,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd805ba19000,ffff8000015766b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000015766b0,fffffd805ba19000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015766b0,0,ffff80003a925658,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a832558,3,ffff80003a925750,808,ffff80003a9257f0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a832558,ffff80003a9258a0,ffff80003a9257f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a9258a0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a9258a0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa5b86c12690, count: -10