uvm_fault(0xffffffff839150c8, 0xffff80000150d04a, 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 *439569 33604 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff8000359136c8,0,ffff800035913640,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a4f00,ffff800035913770,ffff8000359136c8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806ca0d100,ffff800001490c70) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001490c70,fffffd806ca0d100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001490c70,0,ffff800035913918,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c968d08,4,ffff800035913a10,808,ffff800035913ac0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c968d08,ffff800035913b70,ffff800035913ac0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff800035913b70) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035913b70) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac91347a20, 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(0xffffffff839150c8, 0xffff80000150d04a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff8000359136c8,0,ffff800035913640,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a4f00,ffff800035913770,ffff8000359136c8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806ca0d100,ffff800001490c70) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001490c70,fffffd806ca0d100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001490c70,0,ffff800035913918,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c968d08,4,ffff800035913a10,808,ffff800035913ac0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c968d08,ffff800035913b70,ffff800035913ac0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff800035913b70) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035913b70) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac91347a20, count: -10 ddb> show registers rdi 0xffff80002f8fc000 rsi 0x6ec rbp 0xffff800035913510 rbx 0xde rdx 0xffff80002f8fc000 rcx 0x100040600080100 rax 0xfffffd806ca0d0e0 r8 0x1000 __ALIGN_SIZE r9 0xf839524 __kernel_phys_end+0xbe39524 r10 0x314fa4bc1bfedf91 r11 0xe4e8286c57cb2074 r12 0x31 r13 0xfffffd806ca0d000 r14 0xfffffd800a235ef8 r15 0xffff80000150cf60 rip 0xffffffff819c778e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035913490 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=439569 pid=33604 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=0xffff80003c968a78,0xffffffff8390e1a0 process=0xffff800035917678 user=0xffff80003590e000, vmspace=0xfffffd806bfef9f0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 33604 432585 6996 0 2 0 syz-executor *33604 439569 6996 0 7 0x4000000 syz-executor 72585 459796 3177 0 2 0 syz-executor 72585 444250 3177 0 3 0x4000080 fsleep syz-executor 37721 25734 30304 0 2 0 syz-executor 37721 197340 30304 0 3 0x4000080 ttyretype syz-executor 31610 274890 18195 0 2 0 syz-executor 31610 395648 18195 0 3 0x4000080 fsleep syz-executor 31347 397575 33609 0 3 0x80 nanoslp syz-executor 31347 21978 33609 0 3 0x4000080 kqsel syz-executor 31347 449011 33609 0 3 0x4000080 fsleep syz-executor 31347 207357 33609 0 3 0x4000080 fsleep syz-executor 79098 19414 1 0 3 0x100083 ttyin getty 74745 334244 0 0 3 0x14280 nfsidl nfsio 23858 54134 0 0 3 0x14280 nfsidl nfsio 90489 244560 0 0 3 0x14280 nfsidl nfsio 26162 135571 0 0 3 0x14280 nfsidl nfsio 62263 515160 0 0 3 0x14280 nfsidl nfsio 55148 400031 0 0 3 0x14280 nfsidl nfsio 1060 379813 0 0 3 0x14280 nfsidl nfsio 57960 136773 0 0 3 0x14280 nfsidl nfsio 66803 431526 0 0 3 0x14280 nfsidl nfsio 47433 30793 0 0 3 0x14280 nfsidl nfsio 53694 98313 0 0 3 0x14280 nfsidl nfsio 91091 248494 0 0 3 0x14280 nfsidl nfsio 96640 276963 0 0 3 0x14280 nfsidl nfsio 77001 195869 0 0 3 0x14280 nfsidl nfsio 33155 355860 0 0 3 0x14280 nfsidl nfsio 91305 457736 0 0 3 0x14280 nfsidl nfsio 82339 371195 0 0 3 0x14280 nfsidl nfsio 90771 447602 0 0 3 0x14280 nfsidl nfsio 27167 460476 0 0 3 0x14280 nfsidl nfsio 27248 516269 0 0 3 0x14280 nfsidl nfsio 22203 246691 0 0 3 0x14200 bored sosplice 3177 323879 23365 0 3 0x82 nanoslp syz-executor 30304 454295 23365 0 3 0x82 nanoslp syz-executor 33609 258630 23365 0 2 0xc82 syz-executor 6996 58343 23365 0 3 0x82 nanoslp syz-executor 71800 63258 23365 0 3 0x82 wait syz-executor 9448 497363 23365 0 2 0x2 syz-executor 77488 220237 23365 0 2 0x2 syz-executor 18195 196840 23365 0 3 0x82 nanoslp syz-executor 23365 501773 30545 0 3 0x82 kqread syz-executor 30545 483299 16712 0 3 0x10008a sigsusp ksh 16712 125473 42073 0 3 0x98 kqread sshd-session 42073 379885 94982 0 3 0x92 kqread sshd-session 94982 213283 1 0 3 0x88 kqread sshd 72862 185436 3379 73 3 0x1100090 kqread syslogd 3379 16878 1 0 3 0x100082 sbwait syslogd 82972 183715 1 0 3 0x100080 kqread resolvd 97919 437346 13486 77 3 0x100092 kqread dhcpleased 54170 317339 13486 77 3 0x100092 kqread dhcpleased 13486 424219 1 0 3 0x80 kqread dhcpleased 63053 85546 0 0 3 0x14200 bored smr 6291 16478 0 0 2 0x14200 zerothread 8388 499902 0 0 3 0x14200 aiodoned aiodoned 73068 251160 0 0 3 0x14200 syncer update 88067 55869 0 0 3 0x14200 cleaner cleaner 51297 315667 0 0 3 0x14200 reaper reaper 7149 144660 0 0 3 0x14200 pgdaemon pagedaemon 50011 494684 0 0 3 0x14200 bored viomb 64986 31208 0 0 3 0x40014200 acpi0 acpi0 26273 152514 0 0 3 0x14200 bored softnet3 19710 24657 0 0 3 0x14200 bored softnet2 52549 205275 0 0 3 0x14200 bored softnet1 59521 511105 0 0 3 0x14200 bored softnet0 69184 343533 0 0 3 0x14200 bored systqmp 37198 170393 0 0 3 0x14200 bored systq 24625 264949 0 0 2 0x40014200 softclock 68017 248270 0 0 3 0x40014200 idle0 1 16164 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 10193 11191K 11432K 166960K 11716 0 pcb 17 14K 16K 166960K 187 0 rtable 231 9K 9K 166960K 390 0 pf 34 13K 21K 166960K 46 0 ifaddr 45 8K 8K 166960K 53 0 ifgroup 56 2K 2K 166960K 67 0 sysctl 3 1K 9K 166960K 7 0 counters 34 18K 18K 166960K 37 0 ioctlops 0 0K 4K 166960K 67 0 iov 0 0K 12K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1464 92K 92K 166960K 1744 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 10 0K 0K 166960K 10 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 97K 166960K 409 0 sigio 0 0K 0K 166960K 10 0 proc 60 59K 108K 166960K 509 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 109 0 in_multi 102 7K 7K 166960K 108 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 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 377 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 217 159K 169K 166960K 5482 0 UVM aobj 10 2K 2K 166960K 10 0 pinsyscall 37 74K 94K 166960K 1435 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 20 0 NDP 13 0K 2K 166960K 32 0 temp 47 8680K 8803K 166960K 14588 0 kqueue 13 20K 28K 166960K 74 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 64 0 59 1 0 1 1 0 8 0 rtentry 136 118 0 13 4 0 4 4 0 8 0 unpcb 144 198 0 182 1 0 1 1 0 8 0 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 164 0 158 10 1 9 10 0 8 8 arp 88 19 0 0 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 1 1 0 1 1 0 8 0 inpcb 328 470 0 459 11 2 9 10 0 8 7 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 104 28 0 1 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 2 0 1 1 0 1 1 0 8 0 pfosfp 40 2 0 0 1 0 1 1 0 8 0 pfosfpen 112 2 0 0 1 0 1 1 0 8 0 pfrule 1344 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 501 0 54 30 0 30 30 0 8 1 art_table 32 504 0 54 4 0 4 4 0 8 0 art_node 16 117 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 4 1 0 1 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2093 0 595 95 0 95 95 0 8 0 ffsino 248 2093 0 595 95 0 95 95 0 8 0 nchpl 144 2659 0 977 63 0 63 63 0 8 0 uvmvnodes 80 2449 0 0 50 0 50 50 0 8 0 vnodes 216 2449 0 0 137 0 137 137 0 8 0 namei 1024 8321 0 8320 4 2 2 2 0 8 1 kstatmem 264 32 0 6 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 8429 0 8429 9 1 8 8 1 8 8 plimitpl 152 76 0 59 1 0 1 1 0 8 0 sigapl 424 708 0 643 9 1 8 8 0 8 0 knotepl 120 13753 0 13706 10 0 10 10 0 8 8 kqueuepl 184 161 0 151 4 0 4 4 0 8 3 pipepl 296 183 0 156 8 0 8 8 0 8 5 fdescpl 440 671 0 643 5 1 4 5 0 8 0 filepl 120 3538 0 3317 14 0 14 14 0 8 7 lockfpl 104 131 0 127 1 0 1 1 0 8 0 lockfspl 48 63 0 59 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 104 369 0 357 1 0 1 1 0 8 0 zombiepl 144 843 0 842 1 0 1 1 0 8 0 processpl 1160 708 0 643 5 0 5 5 0 8 0 procpl 656 1203 0 1131 9 0 9 9 0 8 1 sosppl 168 1 0 1 1 0 1 1 0 8 1 sockpl 528 746 0 714 10 0 10 10 0 8 7 mcl64k 65536 70 0 70 2 1 1 1 0 8 1 mcl8k 8192 6 0 6 2 1 1 1 0 8 1 mcl4k 4096 2801 0 2748 15 7 8 15 0 8 0 mcl2k 2048 507 0 505 3 0 3 3 0 8 2 mtagpl 96 22 0 10 1 0 1 1 0 8 0 mbufpl 256 7148 0 6976 13 0 13 13 0 8 0 bufpl 280 2762 0 119 189 0 189 189 0 8 0 anonpl 24 117577 0 114529 45 1 44 44 0 187 20 amapchunkpl 152 16497 0 16064 26 0 26 26 0 158 6 amappl16 200 1993 0 1964 13 2 11 11 0 8 8 amappl15 192 25 0 25 1 1 0 1 0 8 0 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 1276 0 1248 2 0 2 2 0 8 0 amappl11 160 59 0 49 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 89 0 88 1 0 1 1 0 8 0 amappl7 128 97 0 86 1 0 1 1 0 8 0 amappl6 120 165 0 162 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 293 0 276 1 0 1 1 0 8 0 amappl3 96 3062 0 2963 4 0 4 4 0 8 0 amappl2 88 607 0 550 2 0 2 2 0 8 0 amappl1 80 8870 0 8330 13 1 12 13 0 8 0 amappl 88 4792 0 4641 5 0 5 5 0 92 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 9 0 9 2 1 1 1 0 8 1 dma128 128 255 0 255 2 1 1 1 0 8 1 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 671 0 643 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 671 0 643 1 0 1 1 0 8 0 vmmpekpl 168 7292 0 7256 3 0 3 3 0 8 0 vmmpepl 168 47748 0 45968 88 0 88 88 0 357 5 vmsppl 360 670 0 643 4 1 3 4 0 8 0 rwobjpl 32 17399 0 14117 27 0 27 27 0 8 0 pdppl 4096 1348 0 1286 96 30 66 82 0 8 4 pvpl 32 306420 0 298124 102 0 102 102 0 265 23 pmappl 216 670 0 643 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 282 0 45 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff8000359136c8,0,ffff800035913640,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a4f00,ffff800035913770,ffff8000359136c8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806ca0d100,ffff800001490c70) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001490c70,fffffd806ca0d100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001490c70,0,ffff800035913918,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c968d08,4,ffff800035913a10,808,ffff800035913ac0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c968d08,ffff800035913b70,ffff800035913ac0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff800035913b70) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035913b70) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac91347a20, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a235ef8) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff8000359136c8,0,ffff800035913640,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a4f00,ffff800035913770,ffff8000359136c8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806ca0d100,ffff800001490c70) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001490c70,fffffd806ca0d100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001490c70,0,ffff800035913918,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c968d08,4,ffff800035913a10,808,ffff800035913ac0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c968d08,ffff800035913b70,ffff800035913ac0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff800035913b70) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035913b70) at syscall+0x97e sys/arch/amd64/amd64/trap.c:637 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ac91347a20, count: -10