uvm_fault(0xffffffff839f98f0, 0xffff80000163b04a, 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 *505860 29880 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4f6cf0,0,ffff80003a4f6c60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001639b00,ffff80003a4f6d98,ffff80003a4f6cf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079c3cb00,ffff800010fe0688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe0688,fffffd8079c3cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0688,0,ffff80003a4f6f48,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338cf248,8,ffff80003a4f7040,808,ffff80003a4f70e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338cf248,ffff80003a4f7190,ffff80003a4f70e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4f7190) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4f7190) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87652b04690, 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(0xffffffff839f98f0, 0xffff80000163b04a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4f6cf0,0,ffff80003a4f6c60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001639b00,ffff80003a4f6d98,ffff80003a4f6cf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079c3cb00,ffff800010fe0688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe0688,fffffd8079c3cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0688,0,ffff80003a4f6f48,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338cf248,8,ffff80003a4f7040,808,ffff80003a4f70e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338cf248,ffff80003a4f7190,ffff80003a4f70e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4f7190) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4f7190) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87652b04690, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003a4f6b40 rbx 0xde rdx 0 rcx 0xffff80000163af60 rax 0xfffffd806fb375e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x988139cf934b7cb5 r11 0xf7d0104553414bf4 r12 0x1d r13 0xfffffd806fb37500 r14 0xfffffd8062dd8810 r15 0xffff8000002a2058 rip 0xffffffff821701d4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a4f6ac0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=505860 pid=29880 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=63, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000338ce550,0xffffffff83a3dba8 process=0xffff800035ce9218 user=0xffff80003a4f2000, vmspace=0xfffffd806cd1b460 estcpu=13, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 29880 189111 27690 0 2 0 syz-executor *29880 505860 27690 0 7 0x4000000 syz-executor 18415 477913 37844 0 2 0 syz-executor 18415 431228 37844 0 3 0x4000080 pipewr syz-executor 18415 341505 37844 0 3 0x4000080 fsleep syz-executor 53847 320469 89086 0 2 0 syz-executor 53847 159847 89086 0 2 0x4000c80 syz-executor 30938 135693 35862 0 2 0 syz-executor 30938 194406 35862 0 3 0x4000080 lockf syz-executor 30938 161251 35862 0 3 0x4000080 lockf syz-executor 84510 473711 94251 0 2 0 syz-executor 84510 478480 94251 0 2 0x4000000 syz-executor 43622 259805 71521 0 3 0x80 nanoslp syz-executor 43622 65448 71521 0 3 0x4000080 piperd syz-executor 43622 305788 71521 0 3 0x4000080 fsleep syz-executor 58596 240869 0 0 3 0x14200 acct acct 27690 141888 59748 0 2 0xc82 syz-executor 71521 276832 59748 0 2 0xc82 syz-executor 89086 270092 59748 0 2 0xc82 syz-executor 35862 83990 59748 0 2 0xc82 syz-executor 37844 484542 59748 0 3 0x82 nanoslp syz-executor 94251 285618 59748 0 2 0xc82 syz-executor 9801 138912 59748 0 3 0x82 nanoslp syz-executor 98092 395629 59748 0 2 0x10000c82 syz-executor 59748 335403 59673 0 3 0x82 kqread syz-executor 59673 247489 84679 0 3 0x10008a sigsusp ksh 84679 53439 40635 0 3 0x98 kqread sshd-session 40635 157186 76341 0 3 0x92 kqread sshd-session 24227 440819 1 0 3 0x100083 ttyin getty 76341 411865 1 0 3 0x88 kqread sshd 4286 108483 88315 73 3 0x1100090 kqread syslogd 88315 98121 1 0 3 0x100082 sbwait syslogd 56585 120795 1 0 3 0x100080 kqread resolvd 62773 463522 40085 77 3 0x100092 kqread dhcpleased 95296 491045 40085 77 3 0x100092 kqread dhcpleased 40085 450278 1 0 3 0x80 kqread dhcpleased 66719 215086 0 0 3 0x14200 bored smr 23702 444825 0 0 2 0x14200 zerothread 49962 42273 0 0 3 0x14200 aiodoned aiodoned 94024 439403 0 0 3 0x14200 syncer update 31007 188269 0 0 3 0x14200 cleaner cleaner 52973 141757 0 0 3 0x14200 reaper reaper 90423 443159 0 0 3 0x14200 pgdaemon pagedaemon 23489 445784 0 0 3 0x14200 bored viomb 25421 314784 0 0 3 0x40014200 acpi0 acpi0 7121 222004 0 0 3 0x14200 bored softnet0 60473 208893 0 0 3 0x14200 bored systqmp 99255 323117 0 0 3 0x14200 bored systq 47019 285356 0 0 3 0x40014200 tmoslp softclock 76614 221145 0 0 3 0x40014200 idle0 1 39976 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 11035 12111K 12558K 166960K 12234 0 pcb 17 12K 12K 166960K 28 0 rtable 250 9K 9K 166960K 376 0 pf 31 13K 13K 166960K 39 0 ifaddr 42 7K 7K 166960K 48 0 ifgroup 50 2K 2K 166960K 58 0 sysctl 1 1K 9K 166960K 7 0 counters 33 17K 18K 166960K 40 0 ioctlops 0 0K 4K 166960K 45 0 iov 0 0K 12K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1297 82K 82K 166960K 1411 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 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 85K 166960K 187 0 sigio 0 0K 0K 166960K 1 0 proc 60 59K 83K 166960K 504 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 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 371 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 224 159K 167K 166960K 3440 0 UVM aobj 5 6K 6K 166960K 5 0 pinsyscall 38 76K 92K 166960K 1278 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 11 0K 2K 166960K 31 0 temp 34 9062K 9158K 166960K 4040 0 kqueue 13 20K 24K 166960K 31 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 38 0 34 1 0 1 1 0 8 0 rtentry 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 51 0 34 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 14 0 10 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 78 0 68 1 0 1 1 0 8 0 nd6 112 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 7 0 7 1 0 1 1 0 8 1 pfstkey 128 2 0 2 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1360 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 40 455 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1652 0 194 92 0 92 92 0 8 0 ffsino 256 1652 0 194 92 0 92 92 0 8 0 nchpl 144 1899 0 206 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 1766 0 0 99 0 99 99 0 8 0 namei 1024 5931 0 5931 2 0 2 2 0 8 2 vcpupl 3904 2 0 0 1 0 1 1 0 8 0 vmpool 808 2 0 0 1 0 1 1 0 8 0 kstatmem 264 30 0 8 2 0 2 2 0 8 0 scxspl 216 6358 0 6358 2 0 2 2 1 8 2 plimitpl 152 100 0 84 1 0 1 1 0 8 0 sigapl 424 481 0 437 6 0 6 6 0 8 1 knotepl 120 4857 0 4810 9 0 9 9 0 8 7 kqueuepl 184 31 0 20 1 0 1 1 0 8 0 pipepl 304 123 0 94 3 0 3 3 0 8 0 fdescpl 448 467 0 438 4 0 4 4 0 8 0 filepl 120 1788 0 1551 8 0 8 8 0 8 0 lockfpl 104 22 0 16 1 0 1 1 0 8 0 lockfspl 48 11 0 7 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 104 129 0 118 1 0 1 1 0 8 0 zombiepl 144 439 0 437 1 0 1 1 0 8 0 processpl 1152 481 0 437 4 0 4 4 0 8 0 procpl 664 564 0 511 5 0 5 5 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 169 0 138 3 0 3 3 0 8 0 mcl64k 65536 2 0 2 1 0 1 1 0 8 1 mcl16k 16384 5 0 5 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2569 0 2522 16 2 14 16 0 8 7 mcl2k 2048 158 0 158 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4684 0 4535 15 0 15 15 0 8 5 bufpl 280 2354 0 103 161 0 161 161 0 8 0 anonpl 24 60143 0 57088 21 0 21 21 0 187 0 amapchunkpl 152 8776 0 8313 19 0 19 19 0 158 0 amappl16 200 281 0 259 2 0 2 2 0 8 0 amappl15 192 5 0 4 1 0 1 1 0 8 0 amappl14 184 407 0 406 1 0 1 1 0 8 0 amappl13 176 108 0 98 1 0 1 1 0 8 0 amappl12 168 714 0 686 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 0 1 1 0 8 1 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 246 0 246 1 0 1 1 0 8 1 amappl8 136 112 0 111 1 0 1 1 0 8 0 amappl7 128 138 0 126 1 0 1 1 0 8 0 amappl6 120 163 0 162 1 0 1 1 0 8 0 amappl5 112 99 0 91 1 0 1 1 0 8 0 amappl4 104 263 0 247 1 0 1 1 0 8 0 amappl3 96 1620 0 1531 3 0 3 3 0 8 0 amappl2 88 568 0 500 2 0 2 2 0 8 0 amappl1 80 9144 0 8605 13 0 13 13 0 8 1 amappl 88 2747 0 2589 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 0 8 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 467 0 438 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 467 0 438 1 0 1 1 0 8 0 vmmpekpl 168 5421 0 5386 2 0 2 2 0 8 0 vmmpepl 168 35991 0 34235 80 0 80 80 0 357 1 vmsppl 368 466 0 438 4 0 4 4 0 8 1 rwobjpl 40 12025 0 11099 11 0 11 11 0 8 0 pdppl 4096 944 0 878 96 28 68 76 0 8 2 pvpl 32 190832 0 182537 77 0 77 77 0 265 2 pmappl 216 468 0 438 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 366 0 30 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4f6cf0,0,ffff80003a4f6c60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001639b00,ffff80003a4f6d98,ffff80003a4f6cf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079c3cb00,ffff800010fe0688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe0688,fffffd8079c3cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0688,0,ffff80003a4f6f48,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338cf248,8,ffff80003a4f7040,808,ffff80003a4f70e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338cf248,ffff80003a4f7190,ffff80003a4f70e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4f7190) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4f7190) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87652b04690, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8062dd8810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a4f6cf0,0,ffff80003a4f6c60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001639b00,ffff80003a4f6d98,ffff80003a4f6cf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8079c3cb00,ffff800010fe0688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fe0688,fffffd8079c3cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0688,0,ffff80003a4f6f48,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338cf248,8,ffff80003a4f7040,808,ffff80003a4f70e0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338cf248,ffff80003a4f7190,ffff80003a4f70e0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a4f7190) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a4f7190) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x87652b04690, count: -10