uvm_fault(0xffffffff83877858, 0xffff8000014a102a, 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 *482047 66926 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9a2ca0,0,ffff80003c9a2c10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014bed00,ffff80003c9a2d48,ffff80003c9a2ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e0f1200,ffff8000014ccd48) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014ccd48,fffffd806e0f1200,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014ccd48,0,ffff80003c9a2ef8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a824fb8,3,ffff80003c9a2ff0,808,ffff80003c9a3090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a824fb8,ffff80003c9a3140,ffff80003c9a3090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9a3140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a3140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe47c61cfde0, 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(0xffffffff83877858, 0xffff8000014a102a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9a2ca0,0,ffff80003c9a2c10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014bed00,ffff80003c9a2d48,ffff80003c9a2ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e0f1200,ffff8000014ccd48) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014ccd48,fffffd806e0f1200,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014ccd48,0,ffff80003c9a2ef8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a824fb8,3,ffff80003c9a2ff0,808,ffff80003c9a3090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a824fb8,ffff80003c9a3140,ffff80003c9a3090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9a3140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a3140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe47c61cfde0, count: -10 ddb> show registers rdi 0xffff80002a928000 rsi 0xb90 rbp 0xffff80003c9a2af0 rbx 0xde rdx 0xffff80002a928000 rcx 0xffff8000014a0f40 rax 0xfffffd806e0f1ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xd549b3aa71565f78 r11 0xc430627ea8fb3939 r12 0x2b r13 0xfffffd806e0f1c00 r14 0xfffffd806b8f84e0 r15 0xffff800000039058 rip 0xffffffff811691e7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9a2a70 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=482047 pid=66926 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a825250,0xffff80002a825cc0 process=0xffff800032539260 user=0xffff80003c99e000, vmspace=0xfffffd806ba395d0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 58752 463079 8616 0 2 0 syz-executor 58752 210764 8616 0 3 0x4000080 fsleep syz-executor 94077 17332 29396 0 2 0 syz-executor 94077 427901 29396 0 3 0x4000080 fsleep syz-executor 78972 427681 5335 0 2 0 syz-executor 78972 114621 5335 0 3 0x4000080 fsleep syz-executor 78972 183323 5335 0 3 0x4000080 fsleep syz-executor 66926 428431 91833 0 2 0 syz-executor *66926 482047 91833 0 7 0x4000000 syz-executor 51542 65463 26549 0 3 0x80 nanoslp syz-executor 51542 240536 26549 0 3 0x4000080 sbwait syz-executor 51542 88813 26549 0 3 0x4000080 fsleep syz-executor 18458 403367 33664 0 2 0 syz-executor 18458 203782 33664 0 3 0x4000080 fsleep syz-executor 59749 467354 67005 0 2 0 syz-executor 59749 377326 67005 0 3 0x4000080 fsleep syz-executor 92825 235981 0 0 3 0x14200 acct acct 25883 513707 0 0 3 0x14200 bored sosplice 29396 35791 45758 0 2 0xc82 syz-executor 26549 287245 45758 0 2 0xc82 syz-executor 5335 7030 45758 0 2 0xc82 syz-executor 33664 388761 45758 0 2 0xc82 syz-executor 8616 503146 45758 0 3 0x82 nanoslp syz-executor 43917 16104 45758 0 2 0x2 syz-executor 67005 18404 45758 0 3 0x82 nanoslp syz-executor 91833 355553 45758 0 2 0xc82 syz-executor 45758 183135 45671 0 3 0x82 kqread syz-executor 45671 145653 94252 0 3 0x10008a sigsusp ksh 94252 172130 85286 0 3 0x98 kqread sshd-session 85286 391886 35284 0 3 0x92 kqread sshd-session 74069 278221 1 0 3 0x100083 ttyin getty 35284 337807 1 0 3 0x88 kqread sshd 73181 86123 603 73 3 0x1100090 kqread syslogd 603 149021 1 0 3 0x100082 sbwait syslogd 44546 310229 1 0 3 0x100080 kqread resolvd 71251 88690 14903 77 3 0x100092 kqread dhcpleased 43993 328424 14903 77 3 0x100092 kqread dhcpleased 14903 159329 1 0 3 0x80 kqread dhcpleased 9938 418508 0 0 3 0x14200 bored smr 6076 214535 0 0 2 0x14200 zerothread 39899 250290 0 0 3 0x14200 aiodoned aiodoned 59255 311285 0 0 3 0x14200 syncer update 16337 241873 0 0 3 0x14200 cleaner cleaner 82199 189037 0 0 3 0x14200 reaper reaper 98142 505065 0 0 3 0x14200 pgdaemon pagedaemon 93782 305037 0 0 3 0x14200 bored viomb 68889 12103 0 0 3 0x40014200 acpi0 acpi0 11324 30953 0 0 3 0x14200 bored softnet7 34587 79337 0 0 3 0x14200 bored softnet6 42241 130192 0 0 3 0x14200 bored softnet5 77378 448569 0 0 3 0x14200 bored softnet4 66004 329511 0 0 3 0x14200 bored softnet3 40619 396027 0 0 3 0x14200 bored softnet2 12830 264472 0 0 3 0x14200 bored softnet1 49992 259917 0 0 3 0x14200 bored softnet0 58604 407809 0 0 3 0x14200 bored systqmp 23763 389340 0 0 3 0x14200 bored systq 46848 112061 0 0 3 0x40014200 tmoslp softclock 67400 243472 0 0 3 0x40014200 idle0 1 1288 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10188 11105K 11371K 166960K 11684 0 pcb 18 13K 14K 166960K 115 0 rtable 195 7K 7K 166960K 329 0 pf 33 13K 17K 166960K 91 0 ifaddr 39 6K 7K 166960K 63 0 ifgroup 50 2K 2K 166960K 93 0 sysctl 4 1K 9K 166960K 8 0 counters 32 17K 18K 166960K 49 0 ioctlops 0 0K 4K 166960K 157 0 iov 0 0K 12K 166960K 18 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1369 86K 87K 166960K 1681 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 16 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 474 0 sigio 0 0K 0K 166960K 5 0 proc 60 59K 91K 166960K 511 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 39 0 in_multi 94 6K 7K 166960K 114 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 388 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 219 151K 169K 166960K 5720 0 UVM aobj 17 2K 2K 166960K 17 0 pinsyscall 38 76K 94K 166960K 1499 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 11 0 NDP 11 0K 1K 166960K 39 0 temp 41 8635K 8700K 166960K 12580 0 kqueue 14 22K 26K 166960K 86 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 63 0 59 1 0 1 1 0 8 0 rtentry 136 108 0 28 4 0 4 4 0 8 0 unpcb 144 272 0 255 4 2 2 4 0 8 1 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 736 126 0 121 4 3 1 4 0 8 0 arp 88 12 0 1 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 390 0 379 8 6 2 7 0 8 0 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 104 18 0 2 1 0 1 1 0 8 0 pkpcb 40 136 0 136 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 10 0 10 2 1 1 1 0 8 1 pppxif 1384 5 0 5 2 1 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfstitem 24 3 0 0 1 0 1 1 0 8 0 pfstkey 128 5 0 3 1 0 1 1 0 8 0 pfstate 384 3 0 1 1 0 1 1 0 8 0 pfrule 1344 8 0 7 1 0 1 1 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 535 0 147 29 3 26 29 0 8 0 art_table 40 537 0 147 5 0 5 5 0 8 0 art_node 32 107 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 3 1 0 1 1 0 8 0 semapl 112 13 0 3 1 0 1 1 0 8 0 shmpl 112 14 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2167 0 671 95 0 95 95 0 8 0 ffsino 256 2167 0 671 95 0 95 95 0 8 0 nchpl 144 2852 0 1173 63 0 63 63 0 8 0 uvmvnodes 80 2471 0 0 51 0 51 51 0 8 0 vnodes 216 2471 0 0 138 0 138 138 0 8 0 namei 1024 8994 0 8993 2 1 1 2 0 8 0 kstatmem 264 46 0 24 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 9852 0 9852 8 7 1 8 1 8 1 plimitpl 152 65 0 49 1 0 1 1 0 8 0 sigapl 424 754 0 703 7 1 6 7 0 8 0 knotepl 120 17384 0 17084 18 8 10 10 0 8 0 kqueuepl 184 128 0 118 1 0 1 1 0 8 0 pipepl 304 159 0 132 5 2 3 5 0 8 0 fdescpl 448 731 0 702 5 1 4 5 0 8 0 filepl 120 3875 0 3659 14 5 9 13 0 8 1 lockfpl 104 225 0 220 2 1 1 2 0 8 0 lockfspl 48 105 0 100 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 34 0 18 1 0 1 1 0 8 0 ucredpl 104 474 0 463 1 0 1 1 0 8 0 zombiepl 144 750 0 750 1 0 1 1 0 8 1 processpl 1168 754 0 703 5 1 4 5 0 8 0 procpl 664 1290 0 1230 6 0 6 6 0 8 0 sockpl 552 867 0 834 12 9 3 12 0 8 0 mcl64k 65536 61 0 60 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 9 0 9 2 1 1 1 0 8 1 mcl4k 4096 2930 0 2880 14 7 7 14 0 8 0 mcl2k 2048 672 0 666 3 1 2 2 0 8 1 mtagpl 96 53 0 41 2 0 2 2 0 8 0 mbufpl 256 7756 0 7564 20 3 17 17 0 8 3 bufpl 280 3672 0 118 254 0 254 254 0 8 0 anonpl 24 135994 0 132816 57 13 44 44 0 187 19 amapchunkpl 152 18561 0 18094 33 11 22 31 0 158 0 amappl16 200 2369 0 2337 13 2 11 11 0 8 8 amappl15 192 5 0 5 1 1 0 1 0 8 0 amappl14 184 104 0 94 1 0 1 1 0 8 0 amappl13 176 10 0 10 1 1 0 1 0 8 0 amappl12 168 1347 0 1317 3 1 2 3 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 242 0 242 1 1 0 1 0 8 0 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 99 0 89 1 0 1 1 0 8 0 amappl6 120 171 0 167 1 0 1 1 0 8 0 amappl5 112 119 0 113 1 0 1 1 0 8 0 amappl4 104 267 0 250 1 0 1 1 0 8 0 amappl3 96 3388 0 3281 4 0 4 4 0 8 0 amappl2 88 611 0 556 2 0 2 2 0 8 0 amappl1 80 9302 0 8746 13 1 12 13 0 8 0 amappl 88 5010 0 4854 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 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 16 0 0 1 0 1 1 0 8 0 uaddrrnd 24 731 0 702 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 731 0 702 1 0 1 1 0 8 0 vmmpekpl 168 7179 0 7151 2 0 2 2 0 8 0 vmmpepl 168 51101 0 49254 89 1 88 88 0 357 3 vmsppl 368 730 0 702 4 1 3 4 0 8 0 rwobjpl 40 18201 0 14865 36 0 36 36 0 8 0 pdppl 4096 1468 0 1404 102 36 66 80 0 8 2 pvpl 32 347765 0 338949 146 23 123 123 0 265 43 pmappl 216 730 0 702 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 392 0 63 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9a2ca0,0,ffff80003c9a2c10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014bed00,ffff80003c9a2d48,ffff80003c9a2ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e0f1200,ffff8000014ccd48) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014ccd48,fffffd806e0f1200,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014ccd48,0,ffff80003c9a2ef8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a824fb8,3,ffff80003c9a2ff0,808,ffff80003c9a3090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a824fb8,ffff80003c9a3140,ffff80003c9a3090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9a3140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a3140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe47c61cfde0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8f84e0) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9a2ca0,0,ffff80003c9a2c10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014bed00,ffff80003c9a2d48,ffff80003c9a2ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd806e0f1200,ffff8000014ccd48) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff8000014ccd48,fffffd806e0f1200,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014ccd48,0,ffff80003c9a2ef8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a824fb8,3,ffff80003c9a2ff0,808,ffff80003c9a3090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a824fb8,ffff80003c9a3140,ffff80003c9a3090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c9a3140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9a3140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe47c61cfde0, count: -10