uvm_fault(0xffffffff838fa3f8, 0xffff80000149404a, 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 *393489 84474 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390cb50,0,ffff80003390cac0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491b00,ffff80003390cbf8,ffff80003390cb50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b0e7b00,ffff80000147d378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147d378,fffffd806b0e7b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147d378,0,ffff80003390cda8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aaa78,3,ffff80003390cea0,808,ffff80003390cf40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aaa78,ffff80003390cff0,ffff80003390cf40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390cff0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390cff0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x505e92de800, 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(0xffffffff838fa3f8, 0xffff80000149404a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390cb50,0,ffff80003390cac0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491b00,ffff80003390cbf8,ffff80003390cb50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b0e7b00,ffff80000147d378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147d378,fffffd806b0e7b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147d378,0,ffff80003390cda8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aaa78,3,ffff80003390cea0,808,ffff80003390cf40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aaa78,ffff80003390cff0,ffff80003390cf40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390cff0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390cff0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x505e92de800, count: -10 ddb> show registers rdi 0xffff80002d4fc000 rsi 0x8b9 rbp 0xffff80003390c9a0 rbx 0xde rdx 0xffff80002d4fc000 rcx 0xffff800001493f60 rax 0xfffffd806c915fe0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x29826b41a83205d9 r11 0xb498ba0cff0e5cce r12 0x1d r13 0xfffffd806c915f00 r14 0xfffffd800a7be810 r15 0xffff800000039058 rip 0xffffffff82aa31f4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003390c920 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=393489 pid=84474 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=0xffff80002a7aa7e0,0xffff80002a7ab780 process=0xffff8000ffff8498 user=0xffff800033908000, vmspace=0xfffffd806ba61b90 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 71985 380363 69852 0 2 0 syz-executor 85394 334260 9500 0 2 0 syz-executor 84257 350899 60124 0 2 0 syz-executor 84257 32338 60124 0 2 0x4000000 syz-executor 84474 196254 78947 0 2 0 syz-executor *84474 393489 78947 0 7 0x4000000 syz-executor 20256 395852 63963 0 2 0x2 ndp 22644 97999 6535 0 2 0x100002 ndp 63963 407599 13906 0 3 0x10008a sigsusp sh 6535 237300 95606 0 3 0x10008a sigsusp sh 11863 174597 49606 0 3 0x82 piperd syz-executor 13906 347468 49606 0 3 0x82 wait syz-executor 69852 320240 49606 0 2 0x2 syz-executor 60124 440346 49606 0 2 0xc82 syz-executor 92016 89499 49606 0 2 0x2 syz-executor 78947 469825 49606 0 2 0xc82 syz-executor 95606 379343 49606 0 3 0x82 wait syz-executor 9500 126391 49606 0 3 0x82 nanoslp syz-executor 49606 360409 65006 0 2 0x2 syz-executor 65006 183132 10350 0 3 0x10008a sigsusp ksh 10350 441079 41423 0 3 0x98 kqread sshd-session 41423 184764 44033 0 3 0x92 kqread sshd-session 29619 463020 1 0 3 0x100083 ttyin getty 44033 92545 1 0 3 0x88 kqread sshd 95731 378784 20326 73 3 0x1100090 kqread syslogd 20326 79103 1 0 3 0x100082 sbwait syslogd 67351 448437 1 0 3 0x100080 kqread resolvd 72370 38253 23456 77 3 0x100092 kqread dhcpleased 73738 366552 23456 77 3 0x100092 kqread dhcpleased 23456 81367 1 0 3 0x80 kqread dhcpleased 66986 261281 0 0 3 0x14200 bored smr 21884 314968 0 0 2 0x14200 zerothread 90526 500879 0 0 3 0x14200 aiodoned aiodoned 27187 103196 0 0 3 0x14200 syncer update 89717 447614 0 0 3 0x14200 cleaner cleaner 87866 118473 0 0 3 0x14200 reaper reaper 59555 272534 0 0 3 0x14200 pgdaemon pagedaemon 88137 497158 0 0 3 0x14200 bored viomb 5075 174490 0 0 3 0x40014200 acpi0 acpi0 93772 464828 0 0 3 0x14200 bored softnet0 41485 412672 0 0 3 0x14200 smrbar systqmp 14262 402360 0 0 3 0x14200 bored systq 78178 477113 0 0 3 0x40014200 tmoslp softclock 30860 34297 0 0 3 0x40014200 idle0 1 72346 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 11039K 11053K 166960K 11250 0 pcb 17 12K 12K 166960K 19 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 18 65K 97K 166960K 141 0 proc 57 58K 124K 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 31 148K 148K 166960K 31 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 186 145K 152K 166960K 2732 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 41 82K 96K 166960K 1163 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 3644 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 37 0 31 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 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 1548 0 47 94 0 94 94 0 8 0 ffsino 256 1548 0 47 94 0 94 94 0 8 0 nchpl 144 1733 0 65 63 0 63 63 0 8 0 vnodes 216 1629 0 0 91 0 91 91 0 8 0 namei 1024 5057 0 5056 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6202 0 6202 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 415 0 372 6 0 6 6 0 8 0 knotepl 120 3028 0 2981 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 448 402 0 372 5 0 5 5 0 8 1 filepl 120 1279 0 1073 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 67 0 56 1 0 1 1 0 8 0 zombiepl 144 372 0 372 1 0 1 1 0 8 1 processpl 1152 415 0 372 4 0 4 4 0 8 0 procpl 664 424 0 379 5 0 5 5 0 8 0 sockpl 552 124 0 96 3 0 3 3 0 8 0 mcl12k 12288 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2357 0 2303 14 0 14 14 0 8 6 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 3669 0 3533 9 0 9 9 0 8 0 bufpl 280 2812 0 117 193 0 193 193 0 8 0 anonpl 24 101493 0 98756 23 0 23 23 0 187 4 amapchunkpl 152 7964 0 7650 15 0 15 15 0 158 1 amappl16 200 2045 0 2031 5 0 5 5 0 8 4 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 130 0 118 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1001 0 973 3 0 3 3 0 8 1 amappl11 160 48 0 38 1 0 1 1 0 8 0 amappl10 152 41 0 41 1 0 1 1 0 8 1 amappl9 144 254 0 254 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 117 0 105 1 0 1 1 0 8 0 amappl6 120 176 0 170 1 0 1 1 0 8 0 amappl5 112 110 0 104 1 0 1 1 0 8 0 amappl4 104 264 0 249 1 0 1 1 0 8 0 amappl3 96 1168 0 1104 2 0 2 2 0 8 0 amappl2 88 622 0 554 2 0 2 2 0 8 0 amappl1 80 7861 0 7271 14 0 14 14 0 8 1 amappl 88 2102 0 1988 3 0 3 3 0 92 0 uvmvnodes 80 1629 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 24 402 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 4738 0 4702 2 0 2 2 0 8 0 vmmpepl 168 32762 0 31007 80 0 80 80 0 357 2 vmsppl 368 401 0 372 4 0 4 4 0 8 0 rwobjpl 40 13674 0 11196 26 0 26 26 0 8 0 pdppl 4096 810 0 744 96 14 82 82 0 8 16 pvpl 32 210570 0 203164 67 0 67 67 0 265 1 pmappl 216 401 0 372 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 358 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390cb50,0,ffff80003390cac0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491b00,ffff80003390cbf8,ffff80003390cb50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b0e7b00,ffff80000147d378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147d378,fffffd806b0e7b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147d378,0,ffff80003390cda8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aaa78,3,ffff80003390cea0,808,ffff80003390cf40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aaa78,ffff80003390cff0,ffff80003390cf40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390cff0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390cff0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x505e92de800, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd800a7be810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003390cb50,0,ffff80003390cac0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001491b00,ffff80003390cbf8,ffff80003390cb50,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806b0e7b00,ffff80000147d378) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000147d378,fffffd806b0e7b00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000147d378,0,ffff80003390cda8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7aaa78,3,ffff80003390cea0,808,ffff80003390cf40) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7aaa78,ffff80003390cff0,ffff80003390cf40) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003390cff0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003390cff0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x505e92de800, count: -10