uvm_fault(0xffffffff8384e2e0, 0xffff80000149a04a, 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 *345917 90421 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031534bb0,0,ffff800031534b20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001497400,ffff800031534c58,ffff800031534bb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b5bb300,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014828b0,fffffd806b5bb300,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014828b0,0,ffff800031534e08,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,4,ffff800031534f00,808,ffff800031534fa0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800031535050,ffff800031534fa0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031535050) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031535050) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x59d063b0780, 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(0xffffffff8384e2e0, 0xffff80000149a04a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031534bb0,0,ffff800031534b20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001497400,ffff800031534c58,ffff800031534bb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b5bb300,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014828b0,fffffd806b5bb300,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014828b0,0,ffff800031534e08,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,4,ffff800031534f00,808,ffff800031534fa0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800031535050,ffff800031534fa0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031535050) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031535050) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x59d063b0780, count: -10 ddb> show registers rdi 0xffff80002cd2a000 rsi 0x933 rbp 0xffff800031534a00 rbx 0xde rdx 0xffff80002cd2a000 rcx 0xffff800001499f60 rax 0xfffffd806b5bb8e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x17827035540447fe r11 0x82006fc3e36ea475 r12 0x18 r13 0xfffffd806b5bb800 r14 0xfffffd800d00f788 r15 0xffff800000039058 rip 0xffffffff81628637 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800031534980 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=345917 pid=90421 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7f54e0,0xffff80002a7f5cb8 process=0xffff8000ffff5fa0 user=0xffff800031530000, vmspace=0xfffffd806bb78e70 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 68129 241880 4625 0 2 0 syz-executor 63845 401446 74596 0 2 0 syz-executor 63845 78683 74596 0 3 0x4000080 fsleep syz-executor 84428 150040 15157 0 2 0 syz-executor 84428 25159 15157 0 3 0x4000080 fsleep syz-executor 80741 415870 38011 0 2 0 syz-executor 80741 115551 38011 0 3 0x4000080 fsleep syz-executor 36784 166729 54438 0 2 0 syz-executor 36784 366527 54438 0 3 0x4000080 fsleep syz-executor 72987 377576 64704 0 2 0 syz-executor 72987 139018 64704 0 3 0x4000080 sbwait syz-executor 90421 179671 47338 0 2 0 syz-executor *90421 345917 47338 0 7 0x4000000 syz-executor 54438 450659 12037 0 2 0xc82 syz-executor 11606 184886 12037 0 3 0x82 piperd syz-executor 4625 130121 12037 0 3 0x82 nanoslp syz-executor 74596 210813 12037 0 3 0x82 nanoslp syz-executor 15157 114474 12037 0 3 0x82 nanoslp syz-executor 64704 266013 12037 0 2 0xc82 syz-executor 47338 34201 12037 0 2 0xc82 syz-executor 38011 75543 12037 0 2 0xc82 syz-executor 12037 172062 27996 0 2 0x2 syz-executor 27996 489255 52666 0 3 0x10008a sigsusp ksh 52666 351433 61614 0 3 0x98 kqread sshd-session 61614 495790 64865 0 3 0x92 kqread sshd-session 43721 57364 1 0 3 0x100083 ttyin getty 64865 250298 1 0 3 0x88 kqread sshd 70470 523050 65163 73 3 0x1100090 kqread syslogd 65163 441916 1 0 3 0x100082 sbwait syslogd 40978 492205 1 0 3 0x100080 kqread resolvd 51124 449148 14263 77 3 0x100092 kqread dhcpleased 73162 431054 14263 77 3 0x100092 kqread dhcpleased 14263 181982 1 0 3 0x80 kqread dhcpleased 69667 263275 0 0 3 0x14200 bored smr 95206 362051 0 0 2 0x14200 zerothread 25608 207618 0 0 3 0x14200 aiodoned aiodoned 99129 189568 0 0 3 0x14200 syncer update 25640 477093 0 0 3 0x14200 cleaner cleaner 34618 226351 0 0 3 0x14200 reaper reaper 88434 301157 0 0 3 0x14200 pgdaemon pagedaemon 22648 223236 0 0 3 0x14200 bored viomb 8018 499746 0 0 3 0x40014200 acpi0 acpi0 59130 139554 0 0 3 0x14200 bored softnet7 7651 425084 0 0 3 0x14200 bored softnet6 84482 52049 0 0 3 0x14200 bored softnet5 41237 292556 0 0 3 0x14200 bored softnet4 42998 85851 0 0 3 0x14200 bored softnet3 73047 8660 0 0 3 0x14200 bored softnet2 93891 297547 0 0 3 0x14200 bored softnet1 50649 349016 0 0 3 0x14200 bored softnet0 22198 309291 0 0 3 0x14200 smrbar systqmp 67065 273104 0 0 3 0x14200 bored systq 88941 115224 0 0 3 0x40014200 tmoslp softclock 702 470859 0 0 3 0x40014200 idle0 1 239027 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 10169 11040K 11053K 166960K 11246 0 pcb 17 12K 12K 166960K 17 0 rtable 214 7K 7K 166960K 272 0 pf 30 12K 12K 166960K 30 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 2K 166960K 29 0 iov 1 2K 2K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1335 84K 84K 166960K 1351 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 137 0 proc 57 58K 124K 166960K 472 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 341 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 205 150K 159K 166960K 2748 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 96K 166960K 1149 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 33 8630K 8692K 166960K 3617 0 kqueue 14 22K 22K 166960K 22 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 36 0 32 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 34 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 6 0 2 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 54 0 47 2 0 2 2 0 8 1 nd6 104 16 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 437 0 0 28 0 28 28 0 8 0 art_table 40 439 0 0 5 0 5 5 0 8 0 art_node 32 96 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1546 0 41 95 0 95 95 0 8 0 ffsino 256 1546 0 41 95 0 95 95 0 8 0 nchpl 144 1731 0 45 63 0 63 63 0 8 0 uvmvnodes 80 1627 0 0 34 0 34 34 0 8 0 vnodes 216 1627 0 0 91 0 91 91 0 8 0 namei 1024 5020 0 5020 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6144 0 6144 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 415 0 366 7 0 7 7 0 8 1 knotepl 120 2987 0 2938 2 0 2 2 0 8 0 kqueuepl 184 18 0 8 1 0 1 1 0 8 0 pipepl 304 97 0 70 3 0 3 3 0 8 0 fdescpl 448 395 0 366 5 0 5 5 0 8 1 filepl 120 1263 0 1054 7 0 7 7 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 64 0 53 1 0 1 1 0 8 0 zombiepl 144 366 0 366 1 0 1 1 0 8 1 processpl 1152 415 0 366 5 0 5 5 0 8 1 procpl 664 421 0 366 5 0 5 5 0 8 0 sockpl 552 124 0 95 3 0 3 3 0 8 0 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2440 0 2383 12 0 12 12 0 8 4 mcl2k 2048 147 0 146 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3749 0 3612 9 0 9 9 0 8 0 bufpl 280 2809 0 117 193 0 193 193 0 8 0 anonpl 24 103164 0 100285 23 0 23 23 0 187 3 amapchunkpl 152 7955 0 7539 16 0 16 16 0 158 0 amappl16 200 2124 0 2113 5 0 5 5 0 8 4 amappl15 192 9 0 8 1 0 1 1 0 8 0 amappl14 184 118 0 108 1 0 1 1 0 8 0 amappl12 168 1001 0 972 3 0 3 3 0 8 1 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 0 1 1 0 8 1 amappl9 144 247 0 247 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 101 0 91 1 0 1 1 0 8 0 amappl6 120 173 0 170 1 0 1 1 0 8 0 amappl5 112 122 0 116 1 0 1 1 0 8 0 amappl4 104 266 0 250 1 0 1 1 0 8 0 amappl3 96 1127 0 1047 2 0 2 2 0 8 0 amappl2 88 609 0 541 2 0 2 2 0 8 0 amappl1 80 7781 0 7234 13 0 13 13 0 8 0 amappl 88 2131 0 1989 4 0 4 4 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 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 395 0 366 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 395 0 366 1 0 1 1 0 8 0 vmmpekpl 168 4669 0 4646 2 0 2 2 0 8 0 vmmpepl 168 32220 0 30451 78 0 78 78 0 357 1 vmsppl 368 394 0 366 4 0 4 4 0 8 1 rwobjpl 40 13705 0 11289 26 0 26 26 0 8 0 pdppl 4096 796 0 732 96 14 82 82 0 8 18 pvpl 32 210322 0 202488 69 0 69 69 0 265 4 pmappl 216 394 0 366 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 359 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031534bb0,0,ffff800031534b20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001497400,ffff800031534c58,ffff800031534bb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b5bb300,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014828b0,fffffd806b5bb300,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014828b0,0,ffff800031534e08,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,4,ffff800031534f00,808,ffff800031534fa0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800031535050,ffff800031534fa0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031535050) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031535050) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x59d063b0780, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d00f788) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800031534bb0,0,ffff800031534b20,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001497400,ffff800031534c58,ffff800031534bb0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b5bb300,ffff8000014828b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014828b0,fffffd806b5bb300,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014828b0,0,ffff800031534e08,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5778,4,ffff800031534f00,808,ffff800031534fa0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5778,ffff800031535050,ffff800031534fa0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800031535050) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800031535050) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x59d063b0780, count: -10