uvm_fault(0xffffffff8384de00, 0xffff80000149400a, 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 *489177 92404 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c942b00,0,ffff80003c942a70,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491600,ffff80003c942ba8,ffff80003c942b00,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d332a00,ffff800001488688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001488688,fffffd800d332a00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001488688,0,ffff80003c942d58,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab770,4,ffff80003c942e50,808,ffff80003c942ef0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab770,ffff80003c942fa0,ffff80003c942ef0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c942fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c942fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1d6cf51c480, 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(0xffffffff8384de00, 0xffff80000149400a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c942b00,0,ffff80003c942a70,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491600,ffff80003c942ba8,ffff80003c942b00,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d332a00,ffff800001488688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001488688,fffffd800d332a00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001488688,0,ffff80003c942d58,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab770,4,ffff80003c942e50,808,ffff80003c942ef0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab770,ffff80003c942fa0,ffff80003c942ef0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c942fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c942fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1d6cf51c480, count: -10 ddb> show registers rdi 0xffff80002ccfc000 rsi 0x94a rbp 0xffff80003c942950 rbx 0xde rdx 0xffff80002ccfc000 rcx 0xffff800001493f20 rax 0xfffffd800d3325e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xbbaf5b088c4698c7 r11 0x71f76caac2d3dbb7 r12 0x1b r13 0xfffffd800d332500 r14 0xfffffd800d362920 r15 0xffff800000039058 rip 0xffffffff8165b634 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9428d0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=489177 pid=92404 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=0xffff80002a7ab240,0xffff80003c94bcb8 process=0xffff8000ffff8498 user=0xffff80003c93e000, vmspace=0xfffffd806ba0ed00 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 67678 369013 72630 0 2 0 syz-executor 74637 273271 51786 0 2 0 syz-executor 74637 323557 51786 0 2 0x4000000 syz-executor 92404 304154 63440 0 2 0 syz-executor *92404 489177 63440 0 7 0x4000000 syz-executor 14399 512754 58185 0 2 0 syz-executor 14399 335156 58185 0 3 0x4000080 fsleep syz-executor 31177 265826 59357 0 2 0 syz-executor 31177 268325 59357 0 3 0x4000080 fsleep syz-executor 57322 102384 562 0 2 0 syz-executor 57322 148807 562 0 3 0x4000080 fsleep syz-executor 53934 495580 89529 0 2 0 syz-executor 53934 235219 89529 0 3 0x4000080 fsleep syz-executor 58185 284375 42652 0 3 0x82 nanoslp syz-executor 72630 147103 42652 0 2 0xc82 syz-executor 59357 207906 42652 0 3 0x82 nanoslp syz-executor 61602 380737 42652 0 2 0x2 syz-executor 562 194523 42652 0 2 0xc82 syz-executor 51786 62665 42652 0 2 0xc82 syz-executor 63440 150087 42652 0 3 0x82 nanoslp syz-executor 89529 407004 42652 0 2 0xc82 syz-executor 42652 140119 27451 0 2 0x2 syz-executor 27451 394084 94979 0 3 0x10008a sigsusp ksh 94979 298511 86364 0 3 0x98 kqread sshd-session 86364 69278 85409 0 3 0x92 kqread sshd-session 2165 9325 1 0 3 0x100083 ttyin getty 85409 382420 1 0 3 0x88 kqread sshd 96911 361957 49768 73 3 0x1100090 kqread syslogd 49768 84311 1 0 3 0x100082 sbwait syslogd 45324 320180 1 0 3 0x100080 kqread resolvd 95834 159157 12199 77 3 0x100092 kqread dhcpleased 60519 118521 12199 77 3 0x100092 kqread dhcpleased 12199 427788 1 0 3 0x80 kqread dhcpleased 4851 401589 0 0 3 0x14200 bored smr 33825 99447 0 0 2 0x14200 zerothread 30109 382463 0 0 3 0x14200 aiodoned aiodoned 67239 255878 0 0 3 0x14200 syncer update 18450 393544 0 0 3 0x14200 cleaner cleaner 61063 149339 0 0 3 0x14200 reaper reaper 85492 462676 0 0 3 0x14200 pgdaemon pagedaemon 27913 162194 0 0 3 0x14200 bored viomb 29387 303370 0 0 3 0x40014200 acpi0 acpi0 93874 126879 0 0 3 0x14200 bored softnet0 43401 472380 0 0 3 0x14200 smrbar systqmp 37698 420497 0 0 3 0x14200 bored systq 35322 60734 0 0 3 0x40014200 tmoslp softclock 54369 44664 0 0 3 0x40014200 idle0 1 344400 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 10163 11047K 11053K 166960K 11247 0 pcb 17 12K 12K 166960K 17 0 rtable 214 7K 7K 166960K 274 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 1334 84K 84K 166960K 1350 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 138 0 proc 57 58K 108K 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 344 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 206 158K 168K 166960K 2799 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 95K 166960K 1160 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 8634K 8698K 166960K 3600 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 38 0 33 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 36 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 96 10 0 0 1 0 1 1 0 8 0 inpcb 328 55 0 48 2 0 2 2 0 8 1 nd6 112 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 48 63 0 63 63 0 8 0 vnodes 216 1627 0 0 91 0 91 91 0 8 0 namei 1024 5040 0 5038 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6097 0 6097 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 412 0 370 6 0 6 6 0 8 1 knotepl 120 2350 0 2303 2 0 2 2 0 8 0 kqueuepl 184 17 0 8 1 0 1 1 0 8 0 pipepl 304 98 0 71 3 0 3 3 0 8 0 fdescpl 448 399 0 370 5 0 5 5 0 8 1 filepl 120 1272 0 1061 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 144 370 0 370 1 0 1 1 0 8 1 processpl 1152 412 0 370 4 0 4 4 0 8 0 procpl 664 419 0 371 5 0 5 5 0 8 0 sockpl 552 129 0 97 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2439 0 2385 14 0 14 14 0 8 5 mcl2k 2048 147 0 145 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3737 0 3601 9 0 9 9 0 8 0 bufpl 280 2814 0 117 193 0 193 193 0 8 0 anonpl 24 94976 0 92081 23 0 23 23 0 187 3 amapchunkpl 152 7942 0 7517 17 0 17 17 0 158 0 amappl16 200 1772 0 1760 5 0 5 5 0 8 4 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 111 0 101 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 0 1 1 0 8 1 amappl12 168 1008 0 980 3 0 3 3 0 8 1 amappl11 160 58 0 48 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 0 1 1 0 8 1 amappl9 144 242 0 242 1 0 1 1 0 8 1 amappl8 136 33 0 32 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 176 0 173 1 0 1 1 0 8 0 amappl5 112 124 0 117 1 0 1 1 0 8 0 amappl4 104 263 0 248 1 0 1 1 0 8 0 amappl3 96 1179 0 1096 3 0 3 3 0 8 0 amappl2 88 615 0 549 2 0 2 2 0 8 0 amappl1 80 7884 0 7333 13 0 13 13 0 8 0 amappl 88 2169 0 2027 4 0 4 4 0 92 0 uvmvnodes 80 1627 0 0 34 0 34 34 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 399 0 370 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 399 0 370 1 0 1 1 0 8 0 vmmpekpl 168 4696 0 4662 2 0 2 2 0 8 0 vmmpepl 168 32097 0 30322 78 0 78 78 0 357 0 vmsppl 368 398 0 370 4 0 4 4 0 8 1 rwobjpl 40 13436 0 11008 26 0 26 26 0 8 0 pdppl 4096 805 0 740 97 14 83 83 0 8 18 pvpl 32 204057 0 196051 69 0 69 69 0 265 4 pmappl 216 398 0 370 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 361 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c942b00,0,ffff80003c942a70,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491600,ffff80003c942ba8,ffff80003c942b00,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d332a00,ffff800001488688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001488688,fffffd800d332a00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001488688,0,ffff80003c942d58,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab770,4,ffff80003c942e50,808,ffff80003c942ef0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab770,ffff80003c942fa0,ffff80003c942ef0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c942fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c942fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1d6cf51c480, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800d362920) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c942b00,0,ffff80003c942a70,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491600,ffff80003c942ba8,ffff80003c942b00,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d332a00,ffff800001488688) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001488688,fffffd800d332a00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001488688,0,ffff80003c942d58,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7ab770,4,ffff80003c942e50,808,ffff80003c942ef0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7ab770,ffff80003c942fa0,ffff80003c942ef0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c942fa0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c942fa0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1d6cf51c480, count: -10