uvm_fault(0xffffffff83893350, 0xffff80000149808a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *479746 3586 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c947958,0,ffff80003c9478d0,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003c947a00,ffff80003c947958,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800d3fe000,ffff800001425ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001425ad8,fffffd800d3fe000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001425ad8,0,ffff80003c947ba8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,3,ffff80003c947ca0,808,ffff80003c947d50) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c947e00,ffff80003c947d50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c947e00) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c947e00) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fcaba3c0, 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(0xffffffff83893350, 0xffff80000149808a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c947958,0,ffff80003c9478d0,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003c947a00,ffff80003c947958,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800d3fe000,ffff800001425ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001425ad8,fffffd800d3fe000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001425ad8,0,ffff80003c947ba8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,3,ffff80003c947ca0,808,ffff80003c947d50) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c947e00,ffff80003c947d50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c947e00) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c947e00) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fcaba3c0, count: -10 ddb> show registers rdi 0xffff800035d0e000 rsi 0x93a rbp 0xffff80003c9477a0 rbx 0xde rdx 0xffff800035d0e000 rcx 0x100040600080100 rax 0xfffffd800d3fe4e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xf7eb4e4eaae402a r11 0x7734603a2ae17d25 r12 0x1a r13 0xfffffd800d3fe400 r14 0xfffffd807a032898 r15 0xffff800001497fa0 rip 0xffffffff81337d6e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c947720 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=479746 pid=3586 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=0xffff80002a7f19c0,0xffff80002a7f07e0 process=0xffff800036114db0 user=0xffff80003c942000, vmspace=0xfffffd806ba97448 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4185 468449 14673 0 2 0 syz-executor 17991 228322 4092 0 2 0 syz-executor 17991 217986 4092 0 3 0x4000080 fsleep syz-executor 24413 243730 60701 60929 2 0x10 syz-executor 24413 463415 60701 60929 3 0x4000090 fsleep syz-executor 3586 42031 34481 0 2 0 syz-executor * 3586 479746 34481 0 7 0x4000000 syz-executor 15676 267283 10409 0 2 0 syz-executor 15676 519991 10409 0 3 0x4000080 fsleep syz-executor 27375 96526 66437 0 2 0 syz-executor 27375 459433 66437 0 3 0x4000080 sbwait syz-executor 27375 423427 66437 0 3 0x4000080 fsleep syz-executor 16695 28659 6723 60929 2 0x10 syz-executor 16695 502998 6723 60929 3 0x4000090 fsleep syz-executor 2272 462317 10987 0 2 0 syz-executor 2272 319307 10987 0 3 0x4000080 ttyopn syz-executor 14673 436559 22872 0 3 0x82 nanoslp syz-executor 4092 311003 22872 0 3 0x82 nanoslp syz-executor 34481 376693 22872 0 2 0xc82 syz-executor 60701 330038 22872 0 3 0x82 nanoslp syz-executor 10409 379505 22872 0 3 0x82 nanoslp syz-executor 66437 198136 22872 0 2 0xc82 syz-executor 10987 463268 22872 0 3 0x82 nanoslp syz-executor 6723 82480 22872 0 3 0x82 nanoslp syz-executor 22872 162899 5653 0 2 0x2 syz-executor 5653 191007 1879 0 3 0x10008a sigsusp ksh 1879 338623 56954 0 3 0x98 kqread sshd-session 56954 221881 85264 0 3 0x92 kqread sshd-session 94254 458884 1 0 3 0x100083 ttyin getty 85264 18767 1 0 3 0x88 kqread sshd 47905 166939 68399 73 3 0x1100090 kqread syslogd 68399 36195 1 0 3 0x100082 sbwait syslogd 5529 9561 1 0 3 0x100080 kqread resolvd 68676 154611 51108 77 3 0x100092 kqread dhcpleased 71328 16115 51108 77 3 0x100092 kqread dhcpleased 51108 75017 1 0 3 0x80 kqread dhcpleased 96970 221235 0 0 3 0x14200 bored smr 46417 370346 0 0 2 0x14200 zerothread 88938 209426 0 0 3 0x14200 aiodoned aiodoned 51129 495076 0 0 3 0x14200 syncer update 67523 228932 0 0 3 0x14200 cleaner cleaner 92144 68332 0 0 3 0x14200 reaper reaper 959 440137 0 0 3 0x14200 pgdaemon pagedaemon 52971 375599 0 0 3 0x14200 bored viomb 15188 59688 0 0 3 0x40014200 acpi0 acpi0 99846 421844 0 0 3 0x14200 bored softnet3 62896 394285 0 0 3 0x14200 bored softnet2 97370 458179 0 0 3 0x14200 bored softnet1 42178 25994 0 0 3 0x14200 bored softnet0 69314 369803 0 0 3 0x14200 smrbar systqmp 15411 192114 0 0 3 0x14200 bored systq 2517 200192 0 0 3 0x40014200 tmoslp softclock 12297 332689 0 0 3 0x40014200 idle0 1 348245 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 10167 11040K 11052K 166960K 11244 0 pcb 18 12K 12K 166960K 18 0 rtable 214 7K 7K 166960K 276 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 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1337 84K 84K 166960K 1356 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 3 0K 0K 166960K 4 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 138 0 proc 58 59K 91K 166960K 473 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 347 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 215 159K 168K 166960K 2757 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 93K 166960K 1170 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 33 8662K 8724K 166960K 3633 0 kqueue 13 20K 20K 166960K 21 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 39 0 34 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 31 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 7 0 2 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 57 0 47 1 0 1 1 0 8 0 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 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1552 0 47 95 0 95 95 0 8 0 ffsino 248 1552 0 47 95 0 95 95 0 8 0 nchpl 144 1736 0 45 63 0 63 63 0 8 0 uvmvnodes 80 1634 0 0 34 0 34 34 0 8 0 vnodes 216 1634 0 0 91 0 91 91 0 8 0 namei 1024 5059 0 5059 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6123 0 6123 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 418 0 372 6 0 6 6 0 8 0 knotepl 120 2413 0 2366 2 0 2 2 0 8 0 kqueuepl 184 17 0 8 1 0 1 1 0 8 0 pipepl 296 99 0 72 3 0 3 3 0 8 0 fdescpl 440 402 0 372 5 0 5 5 0 8 1 filepl 120 1279 0 1066 7 0 7 7 0 8 0 lockfpl 104 7 0 4 1 0 1 1 0 8 0 lockfspl 48 5 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 66 0 53 1 0 1 1 0 8 0 zombiepl 144 372 0 372 1 0 1 1 0 8 1 processpl 1160 418 0 372 4 0 4 4 0 8 0 procpl 656 426 0 372 5 0 5 5 0 8 0 sockpl 528 127 0 97 2 0 2 2 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2413 0 2361 13 0 13 13 0 8 4 mcl2k 2048 146 0 145 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3700 0 3569 9 0 9 9 0 8 0 bufpl 280 2807 0 117 193 0 193 193 0 8 0 anonpl 24 96319 0 93357 23 0 23 23 0 187 5 amapchunkpl 152 7887 0 7435 18 0 18 18 0 158 0 amappl16 200 1834 0 1822 5 0 5 5 0 8 4 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 16 0 15 1 0 1 1 0 8 0 amappl12 168 1014 0 985 3 0 3 3 0 8 1 amappl11 160 44 0 34 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 0 1 1 0 8 1 amappl9 144 249 0 248 1 0 1 1 0 8 0 amappl8 136 28 0 27 1 0 1 1 0 8 0 amappl7 128 95 0 85 1 0 1 1 0 8 0 amappl6 120 171 0 168 1 0 1 1 0 8 0 amappl5 112 115 0 109 1 0 1 1 0 8 0 amappl4 104 262 0 248 1 0 1 1 0 8 0 amappl3 96 1187 0 1085 3 0 3 3 0 8 0 amappl2 88 607 0 555 2 0 2 2 0 8 0 amappl1 80 7995 0 7449 13 0 13 13 0 8 0 amappl 88 2122 0 1971 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 24 402 0 372 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 402 0 372 1 0 1 1 0 8 0 vmmpekpl 168 4669 0 4643 2 0 2 2 0 8 0 vmmpepl 168 32436 0 30622 79 0 79 79 0 357 0 vmsppl 360 401 0 372 4 0 4 4 0 8 1 rwobjpl 32 13576 0 11142 21 0 21 21 0 8 0 pdppl 4096 810 0 744 92 14 78 78 0 8 12 pvpl 32 205988 0 197771 67 0 67 67 0 265 0 pmappl 216 401 0 372 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 251 0 14 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c947958,0,ffff80003c9478d0,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003c947a00,ffff80003c947958,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800d3fe000,ffff800001425ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001425ad8,fffffd800d3fe000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001425ad8,0,ffff80003c947ba8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,3,ffff80003c947ca0,808,ffff80003c947d50) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c947e00,ffff80003c947d50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c947e00) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c947e00) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fcaba3c0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807a032898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c947958,0,ffff80003c9478d0,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff800001495000,ffff80003c947a00,ffff80003c947958,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800d3fe000,ffff800001425ad8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001425ad8,fffffd800d3fe000,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001425ad8,0,ffff80003c947ba8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f02b0,3,ffff80003c947ca0,808,ffff80003c947d50) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f02b0,ffff80003c947e00,ffff80003c947d50) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c947e00) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c947e00) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x33fcaba3c0, count: -10