uvm_fault(0xffffffff83925308, 0xffff80000148e06a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *257588 82966 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9775b0,0,ffff80003c977520,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148b600,ffff80003c977658,ffff80003c9775b0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb99600,ffff80000141bc10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff80000141bc10,fffffd807eb99600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000141bc10,0,ffff80003c977808,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a8022b8,3,ffff80003c977900,808,ffff80003c9779a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a8022b8,ffff80003c977a50,ffff80003c9779a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c977a50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c977a50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5b6f998a40, 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(0xffffffff83925308, 0xffff80000148e06a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9775b0,0,ffff80003c977520,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148b600,ffff80003c977658,ffff80003c9775b0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb99600,ffff80000141bc10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff80000141bc10,fffffd807eb99600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000141bc10,0,ffff80003c977808,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a8022b8,3,ffff80003c977900,808,ffff80003c9779a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a8022b8,ffff80003c977a50,ffff80003c9779a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c977a50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c977a50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5b6f998a40, count: -10 ddb> show registers rdi 0xffff800035d5c000 rsi 0x944 rbp 0xffff80003c977400 rbx 0xde rdx 0xffff800035d5c000 rcx 0xffff80000148df80 rax 0xfffffd807eb99ae0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xfa9e53e08a76fa1f r11 0x723cd02e7e24e06c r12 0x20 r13 0xfffffd807eb99a00 r14 0xfffffd8070528568 r15 0xffff800000039058 rip 0xffffffff820e71c7 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c977380 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=257588 pid=82966 tcnt=2 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=0xffff80002a802d18,0xffff80002a803cb8 process=0xffff80003c96a930 user=0xffff80003c972000, vmspace=0xfffffd806b9b62f8 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34511 71021 13420 0 2 0 syz-executor 34511 337783 13420 0 2 0x4000000 syz-executor 93713 337003 79857 0 2 0 syz-executor 93713 298608 79857 0 3 0x4000080 fsleep syz-executor 57551 326395 78082 0 2 0 syz-executor 82966 307741 88439 0 2 0 syz-executor *82966 257588 88439 0 7 0x4000000 syz-executor 13479 106694 42759 0 2 0 syz-executor 13479 19169 42759 0 3 0x4000080 fsleep syz-executor 94925 212997 74554 0 2 0 syz-executor 94925 53280 74554 0 3 0x4000080 fsleep syz-executor 96414 234106 52785 0 2 0 syz-executor 96414 100881 52785 0 3 0x4000080 fsleep syz-executor 42759 485772 140 0 3 0x82 nanoslp syz-executor 52785 383825 140 0 3 0x82 nanoslp syz-executor 88439 445654 140 0 3 0x82 nanoslp syz-executor 78082 375174 140 0 3 0x82 nanoslp syz-executor 79857 115433 140 0 3 0x82 nanoslp syz-executor 62554 273630 140 0 2 0x2 syz-executor 74554 28733 140 0 3 0x82 nanoslp syz-executor 13420 232612 140 0 3 0x82 nanoslp syz-executor 140 192270 65650 0 3 0x82 kqread syz-executor 65650 474396 1794 0 3 0x10008a sigsusp ksh 1794 480858 87348 0 3 0x98 kqread sshd-session 87348 132291 1654 0 3 0x92 kqread sshd-session 2612 174462 1 0 3 0x100083 ttyin getty 1654 332812 1 0 3 0x88 kqread sshd 3289 387523 3369 73 3 0x1100090 kqread syslogd 3369 380279 1 0 3 0x100082 sbwait syslogd 2223 142721 1 0 3 0x100080 kqread resolvd 59984 152694 69713 77 3 0x100092 kqread dhcpleased 2234 354636 69713 77 3 0x100092 kqread dhcpleased 69713 35665 1 0 3 0x80 kqread dhcpleased 80851 93239 0 0 3 0x14200 bored smr 73046 220474 0 0 2 0x14200 zerothread 16082 236906 0 0 3 0x14200 aiodoned aiodoned 96311 249982 0 0 3 0x14200 syncer update 76181 16256 0 0 3 0x14200 cleaner cleaner 99290 398643 0 0 3 0x14200 reaper reaper 55916 456872 0 0 3 0x14200 pgdaemon pagedaemon 76479 343445 0 0 3 0x14200 bored viomb 49346 208867 0 0 3 0x40014200 acpi0 acpi0 42931 341884 0 0 3 0x14200 bored softnet7 42538 211738 0 0 3 0x14200 bored softnet6 96257 416842 0 0 3 0x14200 bored softnet5 89586 10515 0 0 3 0x14200 bored softnet4 36291 268657 0 0 3 0x14200 bored softnet3 54212 114977 0 0 3 0x14200 bored softnet2 7677 325014 0 0 3 0x14200 bored softnet1 86880 89955 0 0 3 0x14200 bored softnet0 52745 454652 0 0 3 0x14200 bored systqmp 58995 487101 0 0 3 0x14200 bored systq 3555 256191 0 0 3 0x40014200 tmoslp softclock 22762 500332 0 0 3 0x40014200 idle0 1 107337 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 10171 11041K 11053K 166960K 11267 0 pcb 17 12K 12K 166960K 30 0 rtable 222 7K 7K 166960K 297 0 pf 30 12K 13K 166960K 33 0 ifaddr 42 7K 7K 166960K 45 0 ifgroup 50 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 6 0 counters 32 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 12K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1332 84K 84K 166960K 1377 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 264 0 sigio 0 0K 0K 166960K 1 0 proc 58 59K 91K 166960K 474 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 4 0 in_multi 99 7K 7K 166960K 100 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 347 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 205 150K 158K 166960K 3717 0 UVM aobj 4 2K 2K 166960K 4 0 pinsyscall 38 76K 94K 166960K 1289 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 28 0 temp 36 8630K 8694K 166960K 4109 0 kqueue 13 20K 22K 166960K 22 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 46 0 42 1 0 1 1 0 8 0 rtentry 136 97 0 1 4 0 4 4 0 8 0 unpcb 144 39 0 24 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 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 82 0 75 1 0 1 1 0 8 0 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 104 16 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 436 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 97 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1703 0 204 95 0 95 95 0 8 0 ffsino 256 1703 0 204 95 0 95 95 0 8 0 nchpl 144 2023 0 350 63 0 63 63 0 8 0 uvmvnodes 80 1796 0 0 37 0 37 37 0 8 0 vnodes 216 1796 0 0 100 0 100 100 0 8 0 namei 1024 5704 0 5704 2 0 2 2 0 8 2 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 6946 0 6946 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 546 0 497 7 0 7 7 0 8 1 knotepl 120 6212 0 6165 2 0 2 2 0 8 0 kqueuepl 184 21 0 12 1 0 1 1 0 8 0 pipepl 304 99 0 72 3 0 3 3 0 8 0 fdescpl 448 526 0 497 5 0 5 5 0 8 1 filepl 120 1502 0 1297 7 0 7 7 0 8 0 lockfpl 104 21 0 19 1 0 1 1 0 8 0 lockfspl 48 11 0 9 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 104 83 0 72 1 0 1 1 0 8 0 zombiepl 144 497 0 497 1 0 1 1 0 8 1 processpl 1168 546 0 497 5 0 5 5 0 8 1 procpl 664 681 0 626 5 0 5 5 0 8 0 sockpl 552 173 0 147 3 0 3 3 0 8 1 mcl64k 65536 6 0 6 1 0 1 1 0 8 1 mcl16k 16384 21 0 21 1 0 1 1 0 8 1 mcl12k 12288 4 0 4 1 0 1 1 0 8 1 mcl9k 9216 5 0 4 1 0 1 1 0 8 0 mcl8k 8192 61 0 61 1 0 1 1 0 8 1 mcl4k 4096 2613 0 2563 13 0 13 13 0 8 6 mcl2k 2048 185 0 182 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 5885 0 5749 73 0 73 73 0 8 64 bufpl 280 2952 0 114 203 0 203 203 0 8 0 anonpl 24 102840 0 99974 23 0 23 23 0 187 2 amapchunkpl 152 11132 0 10723 18 0 18 18 0 158 1 amappl16 200 1764 0 1746 5 0 5 5 0 8 4 amappl15 192 39 0 39 1 0 1 1 0 8 1 amappl14 184 101 0 91 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 0 1 1 0 8 1 amappl12 168 1135 0 1106 3 0 3 3 0 8 1 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 0 1 1 0 8 1 amappl9 144 295 0 295 1 0 1 1 0 8 1 amappl8 136 27 0 26 1 0 1 1 0 8 0 amappl7 128 108 0 98 1 0 1 1 0 8 0 amappl6 120 170 0 167 1 0 1 1 0 8 0 amappl5 112 124 0 118 1 0 1 1 0 8 0 amappl4 104 260 0 246 1 0 1 1 0 8 0 amappl3 96 1959 0 1862 3 0 3 3 0 8 0 amappl2 88 601 0 548 2 0 2 2 0 8 0 amappl1 80 8381 0 7823 13 0 13 13 0 8 1 amappl 88 3085 0 2943 4 0 4 4 0 92 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 3 0 0 1 0 1 1 0 8 0 uaddrrnd 24 526 0 497 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 526 0 497 1 0 1 1 0 8 0 vmmpekpl 168 5508 0 5482 2 0 2 2 0 8 0 vmmpepl 168 38718 0 36926 81 0 81 81 0 357 1 vmsppl 368 525 0 497 4 0 4 4 0 8 1 rwobjpl 40 14652 0 12047 27 0 27 27 0 8 0 pdppl 4096 1058 0 994 98 18 80 80 0 8 16 pvpl 32 244126 0 236154 77 0 77 77 0 265 11 pmappl 216 525 0 497 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 433 0 18 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9775b0,0,ffff80003c977520,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148b600,ffff80003c977658,ffff80003c9775b0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb99600,ffff80000141bc10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff80000141bc10,fffffd807eb99600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000141bc10,0,ffff80003c977808,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a8022b8,3,ffff80003c977900,808,ffff80003c9779a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a8022b8,ffff80003c977a50,ffff80003c9779a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c977a50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c977a50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5b6f998a40, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070528568) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c9775b0,0,ffff80003c977520,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff80000148b600,ffff80003c977658,ffff80003c9775b0,0,16) at rtm_output+0x91a sys/net/rtsock.c:970 route_output(fffffd807eb99600,ffff80000141bc10) at route_output+0xa2b sys/net/rtsock.c:875 route_send(ffff80000141bc10,fffffd807eb99600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000141bc10,0,ffff80003c977808,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a8022b8,3,ffff80003c977900,808,ffff80003c9779a0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a8022b8,ffff80003c977a50,ffff80003c9779a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c977a50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c977a50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd5b6f998a40, count: -10