uvm_fault(0xffffffff838507f0, 0xffff8000014f806a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *405426 18225 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800032d0b410,0,ffff800032d0b380,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000151a400,ffff800032d0b4b8,ffff800032d0b410,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80662be900,ffff8000014a0028) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014a0028,fffffd80662be900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014a0028,0,ffff800032d0b668,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c98a2c8,4,ffff800032d0b760,808,ffff800032d0b800) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c98a2c8,ffff800032d0b8b0,ffff800032d0b800) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800032d0b8b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032d0b8b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1158ad8780, 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(0xffffffff838507f0, 0xffff8000014f806a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800032d0b410,0,ffff800032d0b380,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000151a400,ffff800032d0b4b8,ffff800032d0b410,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80662be900,ffff8000014a0028) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014a0028,fffffd80662be900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014a0028,0,ffff800032d0b668,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c98a2c8,4,ffff800032d0b760,808,ffff800032d0b800) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c98a2c8,ffff800032d0b8b0,ffff800032d0b800) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800032d0b8b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032d0b8b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1158ad8780, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff800032d0b260 rbx 0xde rdx 0 rcx 0xffff8000014f7f80 rax 0xfffffd80662bebe0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x4b5953ff3666c289 r11 0x351b6bbeebeb9b8c r12 0x3f r13 0xfffffd80662beb00 r14 0xfffffd806ec2dcc0 r15 0xffff800000039058 rip 0xffffffff81ae2974 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800032d0b1e0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=405426 pid=18225 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c98aa90,0xffff80003c98b268 process=0xffff8000ffff4920 user=0xffff800032d06000, vmspace=0xfffffd800c5188b8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 18225 230408 91483 0 2 0 syz-executor *18225 405426 91483 0 7 0x4000000 syz-executor 18225 347326 91483 0 3 0x4000080 fsleep syz-executor 10996 225695 59734 0 2 0 syz-executor 10996 13836 59734 0 2 0x4000000 syz-executor 30565 433171 25270 0 2 0 syz-executor 30565 52723 25270 0 3 0x4000080 fsleep syz-executor 72470 248142 3067 0 2 0 syz-executor 72470 34204 3067 0 2 0x4000000 syz-executor 87119 279034 93512 0 2 0 syz-executor 87119 137490 93512 0 2 0x4000000 syz-executor 87811 344997 14599 0 2 0 syz-executor 87811 440515 14599 0 3 0x4000080 kqpoll syz-executor 41137 474245 49596 0 2 0 syz-executor 41137 407148 49596 0 3 0x4000080 sbwait syz-executor 41137 64525 49596 0 3 0x4000080 fsleep syz-executor 41137 163181 49596 0 3 0x4000080 sbufrcv syz-executor 33451 6571 13758 0 3 0x82 piperd syz-executor 49283 430450 0 0 3 0x14200 acct acct 25270 429287 13758 0 3 0x82 nanoslp syz-executor 51521 378313 0 0 3 0x14280 nfsidl nfsio 50968 308236 0 0 3 0x14280 nfsidl nfsio 1811 446592 0 0 3 0x14280 nfsidl nfsio 44095 362807 0 0 3 0x14280 nfsidl nfsio 98039 308400 0 0 3 0x14280 nfsidl nfsio 31919 178713 0 0 3 0x14280 nfsidl nfsio 95432 452908 0 0 3 0x14280 nfsidl nfsio 73760 256580 0 0 3 0x14280 nfsidl nfsio 27263 141661 0 0 3 0x14280 nfsidl nfsio 74876 494044 0 0 3 0x14280 nfsidl nfsio 54808 173281 0 0 3 0x14280 nfsidl nfsio 91515 92070 0 0 3 0x14280 nfsidl nfsio 2469 454968 0 0 3 0x14280 nfsidl nfsio 31483 324243 0 0 3 0x14280 nfsidl nfsio 81409 373840 0 0 3 0x14280 nfsidl nfsio 79426 380699 0 0 3 0x14280 nfsidl nfsio 17405 507235 0 0 3 0x14280 nfsidl nfsio 96893 2944 0 0 3 0x14280 nfsidl nfsio 18980 97387 0 0 3 0x14280 nfsidl nfsio 55794 60707 0 0 3 0x14280 nfsidl nfsio 91483 193267 13758 0 2 0xc82 syz-executor 49596 388694 13758 0 2 0xc82 syz-executor 14599 377226 13758 0 3 0x82 nanoslp syz-executor 59734 295352 13758 0 2 0xc82 syz-executor 3067 153525 13758 0 3 0x82 nanoslp syz-executor 93512 305950 13758 0 2 0x2 syz-executor 13758 522040 77705 0 2 0x2 syz-executor 77705 9660 19013 0 3 0x10008a sigsusp ksh 19013 439023 27536 0 3 0x98 kqread sshd-session 27536 310829 12643 0 3 0x92 kqread sshd-session 71422 128304 1 0 3 0x100083 ttyopn getty 12643 173302 1 0 3 0x88 kqread sshd 63897 443489 85847 73 3 0x1100090 kqread syslogd 85847 506730 1 0 3 0x100082 sbwait syslogd 5215 406402 1 0 3 0x100080 kqread resolvd 1065 519662 16807 77 3 0x100092 kqread dhcpleased 70078 324016 16807 77 3 0x100092 kqread dhcpleased 16807 403804 1 0 3 0x80 kqread dhcpleased 38576 350905 0 0 3 0x14200 bored smr 3341 349498 0 0 2 0x14200 zerothread 25370 507558 0 0 3 0x14200 aiodoned aiodoned 57550 138048 0 0 3 0x14200 syncer update 82394 66703 0 0 3 0x14200 cleaner cleaner 72484 10924 0 0 3 0x14200 reaper reaper 33964 418890 0 0 3 0x14200 pgdaemon pagedaemon 41021 505319 0 0 3 0x14200 bored viomb 80641 420678 0 0 3 0x40014200 acpi0 acpi0 16755 483210 0 0 3 0x14200 bored softnet0 11442 481268 0 0 3 0x14200 smrbar systqmp 53683 21396 0 0 3 0x14200 bored systq 24220 458469 0 0 3 0x40014200 tmoslp softclock 27740 107610 0 0 3 0x40014200 idle0 1 36343 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 10199 11119K 11591K 166960K 13985 0 pcb 17 16K 18K 166960K 583 0 rtable 247 11K 11K 166960K 676 0 pf 39 14K 67481K 166960K 250 0 ifaddr 45 8K 8K 166960K 124 0 ifgroup 62 2K 2K 166960K 208 0 sysctl 4 1K 9K 166960K 86 0 counters 36 18K 18K 166960K 146 0 ioctlops 0 0K 4K 166960K 435 0 iov 1 4K 16K 166960K 156 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1461 92K 92K 166960K 2918 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 25 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 44 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 1298 0 sigio 2 0K 0K 166960K 160 0 proc 60 59K 124K 166960K 673 0 subproc 72 4K 4K 166960K 99 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 187 0 in_multi 90 6K 7K 166960K 200 0 ether_multi 1 0K 0K 166960K 18 0 mrt 1 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 115 519K 519K 166960K 115 0 exec 0 0K 1K 166960K 495 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 229 151K 169K 166960K 13195 0 UVM aobj 38 4K 4K 166960K 42 0 pinsyscall 38 76K 96K 166960K 2469 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 82 0 NDP 14 0K 2K 166960K 85 0 temp 76 8651K 8717K 166960K 39577 0 kqueue 14 22K 32K 166960K 272 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 120 176 0 171 2 1 1 2 0 8 0 rtentry 136 178 0 80 4 0 4 4 0 8 0 unpcb 144 1152 0 1135 6 5 1 6 0 8 0 syncache 336 13 0 13 1 1 0 1 0 8 0 tcpqe 32 5 0 5 1 1 0 1 0 8 0 tcpcb 736 632 0 623 7 5 2 7 0 8 0 arp 96 25 0 6 1 0 1 1 0 8 0 ipq 40 8 0 0 1 0 1 1 0 8 0 ipqe 40 11 0 1 1 0 1 1 0 8 0 inpcb 328 1686 0 1673 12 10 2 12 0 8 0 ip6q 72 5 0 1 1 0 1 1 0 8 0 ip6af 40 5 0 2 1 0 1 1 0 8 0 nd6 112 37 0 16 1 0 1 1 0 8 0 pkpcb 40 9 0 9 1 1 0 1 0 8 0 kcovpl 48 11 0 3 1 0 1 1 0 8 0 ppxss 1072 93 0 91 1 0 1 1 0 8 0 pppxif 1384 10 0 9 1 0 1 1 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pfrule 1344 5 0 4 1 0 1 1 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 861 0 439 31 3 28 31 0 8 0 art_table 40 865 0 439 5 0 5 5 0 8 0 art_node 32 175 0 86 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 14 1 0 1 1 0 8 0 semapl 112 41 0 31 1 0 1 1 0 8 0 shmpl 112 39 0 4 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3951 0 2452 95 0 95 95 0 8 0 ffsino 256 3951 0 2452 95 0 95 95 0 8 0 nchpl 144 5755 0 4058 64 0 64 64 0 8 0 rtmask 32 18 0 18 1 1 0 1 0 8 0 vnodes 216 3177 0 0 177 0 177 177 0 8 0 namei 1024 20379 0 20379 3 2 1 2 0 8 1 kstatmem 264 124 0 96 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 8 0 8 1 1 0 1 0 8 0 scxspl 216 19104 0 19104 8 7 1 8 1 8 1 plimitpl 152 485 0 469 1 0 1 1 0 8 0 sigapl 424 1604 0 1541 8 0 8 8 0 8 0 knotepl 120 62666 0 62617 30 28 2 17 0 8 0 kqueuepl 184 496 0 484 3 2 1 3 0 8 0 pipepl 304 262 0 233 3 0 3 3 0 8 0 fdescpl 448 1568 0 1539 5 1 4 5 0 8 0 filepl 120 11006 0 10790 13 5 8 13 0 8 0 lockfpl 104 924 0 921 4 3 1 4 0 8 0 lockfspl 48 364 0 361 2 1 1 2 0 8 0 sessionpl 144 33 0 25 1 0 1 1 0 8 0 pgrppl 48 131 0 115 1 0 1 1 0 8 0 ucredpl 104 2035 0 2024 1 0 1 1 0 8 0 zombiepl 144 1541 0 1541 2 1 1 1 0 8 1 processpl 1152 1604 0 1541 5 0 5 5 0 8 0 procpl 664 3321 0 3248 7 0 7 7 0 8 0 sosppl 176 11 0 11 1 1 0 1 0 8 0 sockpl 552 3107 0 3072 16 11 5 13 0 8 0 mcl64k 65536 360 0 358 1 0 1 1 0 8 0 mcl16k 16384 2 0 2 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 14 0 14 1 1 0 1 0 8 0 mcl4k 4096 4008 0 3955 14 7 7 14 0 8 0 mcl2k 2048 2041 0 2032 5 3 2 5 0 8 0 mtagpl 96 51 0 11 2 0 2 2 0 8 0 mbufpl 256 19820 0 19630 76 59 17 76 0 8 0 bufpl 280 7565 0 1343 445 0 445 445 0 8 0 anonpl 24 253118 0 249373 57 28 29 57 0 187 1 amapchunkpl 152 44139 0 43650 31 10 21 31 0 158 0 amappl16 200 5198 0 5153 34 31 3 16 0 8 0 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 22 0 22 1 1 0 1 0 8 0 amappl13 176 463 0 461 1 0 1 1 0 8 0 amappl12 168 1943 0 1905 2 0 2 2 0 8 0 amappl11 160 27 0 27 1 1 0 1 0 8 0 amappl10 152 49 0 38 1 0 1 1 0 8 0 amappl9 144 249 0 249 1 1 0 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 117 0 115 1 0 1 1 0 8 0 amappl6 120 311 0 299 1 0 1 1 0 8 0 amappl5 112 76 0 68 1 0 1 1 0 8 0 amappl4 104 441 0 417 1 0 1 1 0 8 0 amappl3 96 7698 0 7612 3 0 3 3 0 8 0 amappl2 88 1743 0 1672 2 0 2 2 0 8 0 amappl1 80 16111 0 15572 13 0 13 13 0 8 0 amappl 88 12226 0 12065 5 0 5 5 0 92 0 uvmvnodes 80 3177 0 0 65 0 65 65 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 2 0 2 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 1 1 0 1 0 8 0 dma128 128 257 0 257 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 41 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1568 0 1539 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1568 0 1539 1 0 1 1 0 8 0 vmmpekpl 168 13774 0 13726 3 0 3 3 0 8 0 vmmpepl 168 107414 0 105608 93 11 82 93 0 357 0 vmsppl 368 1567 0 1539 4 1 3 4 0 8 0 rwobjpl 40 33433 0 29362 44 0 44 44 0 8 0 pdppl 4096 3143 0 3078 107 40 67 83 0 8 2 pvpl 32 701082 0 691502 139 48 91 139 0 265 0 pmappl 216 1567 0 1539 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 457 0 127 12 1 11 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800032d0b410,0,ffff800032d0b380,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000151a400,ffff800032d0b4b8,ffff800032d0b410,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80662be900,ffff8000014a0028) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014a0028,fffffd80662be900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014a0028,0,ffff800032d0b668,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c98a2c8,4,ffff800032d0b760,808,ffff800032d0b800) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c98a2c8,ffff800032d0b8b0,ffff800032d0b800) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800032d0b8b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032d0b8b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1158ad8780, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ec2dcc0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800032d0b410,0,ffff800032d0b380,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000151a400,ffff800032d0b4b8,ffff800032d0b410,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd80662be900,ffff8000014a0028) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014a0028,fffffd80662be900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014a0028,0,ffff800032d0b668,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c98a2c8,4,ffff800032d0b760,808,ffff800032d0b800) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c98a2c8,ffff800032d0b8b0,ffff800032d0b800) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800032d0b8b0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800032d0b8b0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1158ad8780, count: -10