uvm_fault(0xffffffff839bf7a8, 0xffff8000015aa00a, 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 *289567 40589 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031cfd440,0,ffff800031cfd3b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015a8f00,ffff800031cfd4e8,ffff800031cfd440,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80716e4400,ffff800001594688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001594688,fffffd80716e4400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001594688,0,ffff800031cfd698,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003810e558,3,ffff800031cfd790,808,ffff800031cfd830) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003810e558,ffff800031cfd8e0,ffff800031cfd830) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031cfd8e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031cfd8e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x201640445a0, 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(0xffffffff839bf7a8, 0xffff8000015aa00a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031cfd440,0,ffff800031cfd3b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015a8f00,ffff800031cfd4e8,ffff800031cfd440,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80716e4400,ffff800001594688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001594688,fffffd80716e4400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001594688,0,ffff800031cfd698,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003810e558,3,ffff800031cfd790,808,ffff800031cfd830) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003810e558,ffff800031cfd8e0,ffff800031cfd830) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031cfd8e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031cfd8e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x201640445a0, count: -10 ddb> show registers rdi 0xffff800035d0a000 rsi 0x645 rbp 0xffff800031cfd290 rbx 0xde rdx 0xffff800035d0a000 rcx 0xffff8000015a9f20 rax 0xfffffd80716e46e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xc628727b955ecd03 r11 0x56a13e2a52289abb r12 0x1d r13 0xfffffd80716e4600 r14 0xfffffd806c492788 r15 0xffff8000002a2058 rip 0xffffffff811d32d4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800031cfd210 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=289567 pid=40589 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=59, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003810ea88,0xffff80003810e2d0 process=0xffff800033901b18 user=0xffff800031cf8000, vmspace=0xfffffd807167d2f8 estcpu=9, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14937 110778 1282 0 2 0 syz-executor 14937 521028 1282 0 2 0x4000000 syz-executor 40589 206062 66533 0 2 0 syz-executor *40589 289567 66533 0 7 0x4000000 syz-executor 54017 193897 55786 0 2 0 syz-executor 54017 130618 55786 0 3 0x4000080 fsleep syz-executor 89833 250915 15702 0 2 0 syz-executor 89833 20307 15702 0 2 0x4000000 syz-executor 89833 441551 15702 0 3 0x4000080 fsleep syz-executor 89833 301462 15702 0 3 0x4000080 fsleep syz-executor 74831 110796 64626 60929 2 0x10 syz-executor 74831 104060 64626 60929 3 0x4000090 fsleep syz-executor 78917 337111 69098 0 2 0 syz-executor 78917 232985 69098 0 3 0x4000080 fsleep syz-executor 64626 223885 55916 0 2 0xc82 syz-executor 15702 12874 55916 0 2 0xc82 syz-executor 66533 4866 55916 0 2 0xc82 syz-executor 69098 359975 55916 0 2 0xc82 syz-executor 42212 138830 55916 0 2 0x10000c82 syz-executor 77600 2371 55916 0 2 0x2 syz-executor 55786 84984 55916 0 2 0xc82 syz-executor 1282 122938 55916 0 2 0xc82 syz-executor 55916 294003 65316 0 3 0x82 kqread syz-executor 65316 232179 47233 0 3 0x10008a sigsusp ksh 47233 156119 55214 0 3 0x98 kqread sshd-session 55214 350571 72455 0 3 0x92 kqread sshd-session 48987 113795 1 0 3 0x100083 ttyin getty 72455 159233 1 0 3 0x88 kqread sshd 61952 233347 78730 73 2 0x1100090 syslogd 78730 39937 1 0 3 0x100082 sbwait syslogd 70856 65384 1 0 3 0x100080 kqread resolvd 48307 347527 87637 77 3 0x100092 kqread dhcpleased 57745 361301 87637 77 3 0x100092 kqread dhcpleased 87637 91184 1 0 3 0x80 kqread dhcpleased 50265 521912 0 0 3 0x14200 bored smr 17481 140096 0 0 2 0x14200 zerothread 61345 77610 0 0 3 0x14200 aiodoned aiodoned 49371 523419 0 0 3 0x14200 syncer update 10327 474225 0 0 3 0x14200 cleaner cleaner 89350 243464 0 0 3 0x14200 reaper reaper 88457 450923 0 0 3 0x14200 pgdaemon pagedaemon 22011 426211 0 0 3 0x14200 bored viomb 77769 54966 0 0 3 0x40014200 acpi0 acpi0 74267 173609 0 0 3 0x14200 bored softnet0 74786 33199 0 0 3 0x14200 bored systqmp 64173 422686 0 0 3 0x14200 bored systq 42616 300683 0 0 3 0x40014200 tmoslp softclock 22736 2726 0 0 3 0x40014200 idle0 1 438587 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 11032 12169K 12436K 166960K 12280 0 pcb 17 12K 12K 166960K 36 0 rtable 260 8K 8K 166960K 396 0 pf 30 12K 13K 166960K 38 0 ifaddr 42 7K 7K 166960K 47 0 ifgroup 50 2K 2K 166960K 56 0 sysctl 1 1K 9K 166960K 7 0 counters 33 17K 18K 166960K 36 0 ioctlops 0 0K 4K 166960K 43 0 iov 0 0K 12K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1346 85K 85K 166960K 1420 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 2 0K 0K 166960K 2 0 dirhash 15 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 85K 166960K 200 0 sigio 0 0K 0K 166960K 1 0 proc 60 59K 91K 166960K 480 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 8 0 in_multi 99 7K 7K 166960K 101 0 ether_multi 1 0K 0K 166960K 3 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 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 360 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 212 150K 165K 166960K 3548 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 37 74K 91K 166960K 1268 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 11 0K 2K 166960K 30 0 temp 35 8662K 8728K 166960K 8306 0 kqueue 13 20K 24K 166960K 36 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 50 0 44 1 0 1 1 0 8 0 rtentry 136 114 0 2 4 0 4 4 0 8 0 unpcb 144 76 0 61 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 20 0 15 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 103 0 95 2 0 2 2 0 8 0 nd6 112 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 458 0 0 29 0 29 29 0 8 0 art_table 40 461 0 0 5 0 5 5 0 8 0 art_node 32 114 0 12 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 2 3 0 3 3 0 8 0 dino2pl 256 1694 0 186 95 0 95 95 0 8 0 ffsino 256 1694 0 186 95 0 95 95 0 8 0 nchpl 144 1949 0 262 64 0 64 64 0 8 0 vnodes 216 1805 0 0 101 0 101 101 0 8 0 namei 1024 5651 0 5650 2 0 2 2 0 8 1 kstatmem 264 28 0 6 2 0 2 2 0 8 0 scxspl 216 6235 0 6235 3 0 3 3 1 8 3 plimitpl 152 32 0 16 1 0 1 1 0 8 0 sigapl 424 486 0 444 6 0 6 6 0 8 1 knotepl 120 6827 0 6780 10 0 10 10 0 8 8 kqueuepl 184 36 0 26 1 0 1 1 0 8 0 pipepl 304 117 0 90 3 0 3 3 0 8 0 fdescpl 448 473 0 445 4 0 4 4 0 8 0 filepl 120 1706 0 1493 9 0 9 9 0 8 1 lockfpl 104 24 0 21 1 0 1 1 0 8 0 lockfspl 48 11 0 8 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 104 102 0 90 1 0 1 1 0 8 0 zombiepl 144 445 0 444 1 0 1 1 0 8 0 processpl 1152 486 0 444 4 0 4 4 0 8 0 procpl 664 588 0 538 6 0 6 6 0 8 1 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 232 0 203 4 0 4 4 0 8 1 mcl64k 65536 4 0 3 1 0 1 1 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2533 0 2481 13 0 13 13 0 8 5 mcl2k 2048 181 0 173 2 0 2 2 0 8 0 mtagpl 96 8 0 5 1 0 1 1 0 8 0 mbufpl 256 4741 0 4558 12 0 12 12 0 8 0 bufpl 280 2447 0 119 167 0 167 167 0 8 0 anonpl 24 109308 0 106389 44 0 44 44 0 187 22 amapchunkpl 152 22934 0 22501 31 0 31 31 0 158 11 amappl16 200 2035 0 2014 5 0 5 5 0 8 2 amappl15 192 9 0 9 1 0 1 1 0 8 1 amappl14 184 3 0 3 1 0 1 1 0 8 1 amappl13 176 404 0 402 1 0 1 1 0 8 0 amappl12 168 812 0 775 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 46 0 36 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 0 1 1 0 8 1 amappl8 136 26 0 25 1 0 1 1 0 8 0 amappl7 128 84 0 83 1 0 1 1 0 8 0 amappl6 120 265 0 254 1 0 1 1 0 8 0 amappl5 112 73 0 66 1 0 1 1 0 8 0 amappl4 104 390 0 367 1 0 1 1 0 8 0 amappl3 96 1609 0 1528 3 0 3 3 0 8 0 amappl2 88 579 0 509 2 0 2 2 0 8 0 amappl1 80 9017 0 8486 13 0 13 13 0 8 1 amappl 88 2853 0 2709 4 0 4 4 0 92 0 uvmvnodes 80 98 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 7 0 7 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 473 0 445 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 473 0 445 1 0 1 1 0 8 0 vmmpekpl 168 5449 0 5420 2 0 2 2 0 8 0 vmmpepl 168 38040 0 36347 80 0 80 80 0 357 2 vmsppl 368 472 0 445 4 0 4 4 0 8 1 rwobjpl 40 13875 0 12969 11 0 11 11 0 8 1 pdppl 4096 952 0 890 90 24 66 76 0 8 4 pvpl 32 243467 0 235585 112 0 112 112 0 265 34 pmappl 216 472 0 445 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 359 0 24 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031cfd440,0,ffff800031cfd3b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015a8f00,ffff800031cfd4e8,ffff800031cfd440,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80716e4400,ffff800001594688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001594688,fffffd80716e4400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001594688,0,ffff800031cfd698,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003810e558,3,ffff800031cfd790,808,ffff800031cfd830) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003810e558,ffff800031cfd8e0,ffff800031cfd830) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031cfd8e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031cfd8e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x201640445a0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806c492788) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800031cfd440,0,ffff800031cfd3b0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff8000015a8f00,ffff800031cfd4e8,ffff800031cfd440,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80716e4400,ffff800001594688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001594688,fffffd80716e4400,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001594688,0,ffff800031cfd698,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003810e558,3,ffff800031cfd790,808,ffff800031cfd830) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003810e558,ffff800031cfd8e0,ffff800031cfd830) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031cfd8e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031cfd8e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x201640445a0, count: -10