login: uvm_fault(0xffffffff83882410, 0xffff80000148d02a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *487323 20993 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd2b910,0,ffff80002cd2b880,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001482900,ffff80002cd2b9b8,ffff80002cd2b910,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806b2b2c00,ffff800010fdf9f0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fdf9f0,fffffd806b2b2c00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fdf9f0,0,ffff80002cd2bb68,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a81f770,4,ffff80002cd2bc60,808,ffff80002cd2bd00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a81f770,ffff80002cd2bdb0,ffff80002cd2bd00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002cd2bdb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd2bdb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9233c2f3700, 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(0xffffffff83882410, 0xffff80000148d02a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd2b910,0,ffff80002cd2b880,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001482900,ffff80002cd2b9b8,ffff80002cd2b910,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806b2b2c00,ffff800010fdf9f0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fdf9f0,fffffd806b2b2c00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fdf9f0,0,ffff80002cd2bb68,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a81f770,4,ffff80002cd2bc60,808,ffff80002cd2bd00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a81f770,ffff80002cd2bdb0,ffff80002cd2bd00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002cd2bdb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd2bdb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9233c2f3700, count: -10 ddb> show registers rdi 0xffff80003a960000 rsi 0xa48 rbp 0xffff80002cd2b760 rbx 0xde rdx 0xffff80003a960000 rcx 0xffff80000148cf40 rax 0xfffffd806b2b2de0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x49379e786331e6f0 r11 0x1e5c1f62592fff8f r12 0x20 r13 0xfffffd806b2b2d00 r14 0xfffffd806b4f15f0 r15 0xffff800000039058 rip 0xffffffff82a01dd7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002cd2b6e0 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=487323 pid=20993 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=63, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a821780,0xffffffff8384bc00 process=0xffff800035d528a0 user=0xffff80002cd26000, vmspace=0xfffffd8078e055d8 estcpu=13, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35657 286930 33954 0 2 0 syz-executor 35657 69448 33954 0 2 0x4000000 syz-executor 20993 512085 98620 0 2 0 syz-executor 20993 225893 98620 0 3 0x4000080 ttyin syz-executor *20993 487323 98620 0 7 0x4000000 syz-executor 40644 238044 28384 0 2 0 syz-executor 40644 79650 28384 0 3 0x4000080 piperd syz-executor 40644 242350 28384 0 3 0x4000080 fsleep syz-executor 46753 195176 70972 0 3 0x80 nanoslp syz-executor 46753 201907 70972 0 3 0x4000080 kqread syz-executor 46753 179104 70972 0 3 0x4000080 fsleep syz-executor 46753 192378 70972 0 3 0x4000080 fsleep syz-executor 95632 91613 89760 0 3 0x80 nanoslp syz-executor 95632 496910 89760 0 3 0x4000080 ttyin syz-executor 95632 458200 89760 0 3 0x4000080 fsleep syz-executor 68164 250166 61669 0 3 0x80 nanoslp syz-executor 68164 186685 61669 0 3 0x4000080 kqsel syz-executor 68164 17025 61669 0 3 0x4000080 fsleep syz-executor 57204 329544 68962 0 3 0x80 nanoslp syz-executor 57204 380148 68962 0 3 0x4000080 semwait syz-executor 57204 216005 68962 0 3 0x4000080 fsleep syz-executor 56669 339078 1 0 3 0x100083 ttyin getty 98620 483242 35794 0 2 0xc82 syz-executor 28384 196576 35794 0 2 0xc82 syz-executor 70972 20481 35794 0 2 0xc82 syz-executor 61669 510533 35794 0 2 0xc82 syz-executor 68962 267253 35794 0 3 0x82 nanoslp syz-executor 89760 213100 35794 0 2 0xc82 syz-executor 33954 73650 35794 0 3 0x82 nanoslp syz-executor 16707 738 35794 0 2 0x2 syz-executor 35794 354732 29682 0 3 0x82 kqread syz-executor 29682 286348 27593 0 3 0x10008a sigsusp ksh 27593 209666 82941 0 3 0x98 kqread sshd-session 82941 188742 87183 0 3 0x92 kqread sshd-session 87183 32426 1 0 3 0x88 kqread sshd 59292 402763 58450 73 3 0x1100090 kqread syslogd 58450 57651 1 0 3 0x100082 sbwait syslogd 21489 365876 1 0 3 0x100080 kqread resolvd 52011 304254 92829 77 3 0x100092 kqread dhcpleased 83957 199538 92829 77 3 0x100092 kqread dhcpleased 92829 342832 1 0 3 0x80 kqread dhcpleased 56472 96718 0 0 3 0x14200 bored smr 70168 447371 0 0 2 0x14200 zerothread 92429 445462 0 0 3 0x14200 aiodoned aiodoned 77915 387506 0 0 3 0x14200 syncer update 13942 118059 0 0 3 0x14200 cleaner cleaner 43615 428265 0 0 3 0x14200 reaper reaper 79720 328749 0 0 3 0x14200 pgdaemon pagedaemon 67451 81173 0 0 3 0x14200 bored viomb 46258 262959 0 0 3 0x40014200 acpi0 acpi0 74501 445998 0 0 3 0x14200 bored softnet7 43241 122731 0 0 3 0x14200 bored softnet6 21164 225282 0 0 3 0x14200 bored softnet5 58284 513368 0 0 3 0x14200 bored softnet4 91130 436007 0 0 3 0x14200 bored softnet3 37353 223985 0 0 3 0x14200 bored softnet2 81651 415028 0 0 3 0x14200 bored softnet1 58595 213894 0 0 2 0x14200 softnet0 59986 305199 0 0 3 0x14200 bored systqmp 35729 201961 0 0 3 0x14200 bored systq 74401 327813 0 0 2 0x40014200 softclock 71398 342146 0 0 3 0x40014200 idle0 1 171268 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 10208 11060K 11352K 166960K 11448 0 pcb 19 12K 12K 166960K 55 0 rtable 210 8K 8K 166960K 300 0 pf 28 12K 131084K 166960K 42 0 ifaddr 38 6K 7K 166960K 48 0 ifgroup 46 2K 2K 166960K 62 0 sysctl 3 1K 9K 166960K 10 0 counters 31 17K 17K 166960K 39 0 ioctlops 0 0K 4K 166960K 49 0 iov 0 0K 24K 166960K 12 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1342 84K 85K 166960K 1470 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 252 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 83K 166960K 495 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 15 0 in_multi 88 6K 7K 166960K 113 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 357 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 237 163K 175K 166960K 3796 0 UVM aobj 8 2K 2K 166960K 8 0 pinsyscall 38 76K 94K 166960K 1278 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 10 0K 2K 166960K 31 0 temp 75 8643K 8718K 166960K 10938 0 kqueue 15 24K 26K 166960K 44 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 48 0 44 1 0 1 1 0 8 0 rtentry 136 98 0 10 4 0 4 4 0 8 0 unpcb 144 93 0 76 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 71 0 64 4 0 4 4 0 8 3 arp 88 10 0 1 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 328 177 0 164 4 0 4 4 0 8 2 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 104 18 0 2 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 5 0 5 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 449 0 42 28 0 28 28 0 8 2 art_table 40 451 0 42 5 0 5 5 0 8 0 art_node 32 98 0 19 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semapl 112 5 0 1 1 0 1 1 0 8 0 shmpl 112 5 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1797 0 297 95 0 95 95 0 8 0 ffsino 256 1797 0 297 95 0 95 95 0 8 0 nchpl 144 2139 0 459 63 0 63 63 0 8 0 rtmask 32 1 0 1 1 0 1 1 0 8 1 uvmvnodes 80 1936 0 0 40 0 40 40 0 8 0 vnodes 216 1936 0 0 108 0 108 108 0 8 0 namei 1024 6726 0 6726 2 0 2 2 0 8 2 kstatmem 264 30 0 10 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 7293 0 7293 8 0 8 8 1 8 8 plimitpl 152 44 0 27 1 0 1 1 0 8 0 sigapl 424 534 0 485 7 0 7 7 0 8 1 knotepl 120 39363 0 39311 10 0 10 10 0 8 8 kqueuepl 184 63 0 51 1 0 1 1 0 8 0 pipepl 304 113 0 85 3 0 3 3 0 8 0 fdescpl 448 514 0 485 5 0 5 5 0 8 1 filepl 120 2358 0 2136 11 0 11 11 0 8 3 lockfpl 104 109 0 105 1 0 1 1 0 8 0 lockfspl 48 26 0 22 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 104 463 0 451 1 0 1 1 0 8 0 zombiepl 144 485 0 485 1 0 1 1 0 8 1 processpl 1152 534 0 485 5 0 5 5 0 8 1 procpl 664 729 0 666 6 0 6 6 0 8 0 sockpl 552 325 0 290 5 0 5 5 0 8 2 mcl64k 65536 72 0 72 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2621 0 2570 15 0 15 15 0 8 7 mcl2k 2048 324 0 322 2 0 2 2 0 8 1 mtagpl 96 11 0 4 1 0 1 1 0 8 0 mbufpl 256 5079 0 4939 11 0 11 11 0 8 0 bufpl 280 3061 0 118 211 0 211 211 0 8 0 anonpl 24 110977 0 106843 38 0 38 38 0 187 9 amapchunkpl 152 11950 0 11404 34 0 34 34 0 158 11 amappl16 200 2042 0 2014 5 0 5 5 0 8 2 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1122 0 1093 2 0 2 2 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 0 1 1 0 8 1 amappl9 144 250 0 249 1 0 1 1 0 8 0 amappl8 136 23 0 21 1 0 1 1 0 8 0 amappl7 128 99 0 88 1 0 1 1 0 8 0 amappl6 120 173 0 170 1 0 1 1 0 8 0 amappl5 112 113 0 106 1 0 1 1 0 8 0 amappl4 104 264 0 247 1 0 1 1 0 8 0 amappl3 96 1959 0 1851 3 0 3 3 0 8 0 amappl2 88 603 0 549 2 0 2 2 0 8 0 amappl1 80 8343 0 7787 13 0 13 13 0 8 1 amappl 88 3141 0 2968 5 0 5 5 0 92 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 7 0 7 1 0 1 1 0 8 1 dma128 128 319 0 319 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 7 0 0 1 0 1 1 0 8 0 uaddrrnd 24 514 0 485 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 514 0 485 1 0 1 1 0 8 0 vmmpekpl 168 5522 0 5486 2 0 2 2 0 8 0 vmmpepl 168 38513 0 36654 85 0 85 85 0 357 1 vmsppl 368 513 0 485 4 0 4 4 0 8 1 rwobjpl 40 15216 0 12411 29 0 29 29 0 8 0 pdppl 4096 1034 0 970 94 28 66 80 0 8 2 pvpl 32 250216 0 240759 91 0 91 91 0 265 7 pmappl 216 513 0 485 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 366 0 28 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd2b910,0,ffff80002cd2b880,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001482900,ffff80002cd2b9b8,ffff80002cd2b910,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806b2b2c00,ffff800010fdf9f0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fdf9f0,fffffd806b2b2c00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fdf9f0,0,ffff80002cd2bb68,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a81f770,4,ffff80002cd2bc60,808,ffff80002cd2bd00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a81f770,ffff80002cd2bdb0,ffff80002cd2bd00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002cd2bdb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd2bdb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9233c2f3700, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b4f15f0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd2b910,0,ffff80002cd2b880,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001482900,ffff80002cd2b9b8,ffff80002cd2b910,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806b2b2c00,ffff800010fdf9f0) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff800010fdf9f0,fffffd806b2b2c00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800010fdf9f0,0,ffff80002cd2bb68,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a81f770,4,ffff80002cd2bc60,808,ffff80002cd2bd00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a81f770,ffff80002cd2bdb0,ffff80002cd2bd00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80002cd2bdb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd2bdb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9233c2f3700, count: -10