uvm_fault(0xffffffff838b4f08, 0xffff8000014b00aa, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *355084 68957 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003813f088,0,ffff80003813f000,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149ca00,ffff80003813f130,ffff80003813f088,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e8f8600,ffff80000140d4a0) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000140d4a0,fffffd806e8f8600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000140d4a0,0,ffff80003813f2d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff8000381459c8,5,ffff80003813f3d0,808,ffff80003813f480) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff8000381459c8,ffff80003813f530,ffff80003813f480) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003813f530) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003813f530) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe7f2ebbeaf0, 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(0xffffffff838b4f08, 0xffff8000014b00aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003813f088,0,ffff80003813f000,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149ca00,ffff80003813f130,ffff80003813f088,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e8f8600,ffff80000140d4a0) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000140d4a0,fffffd806e8f8600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000140d4a0,0,ffff80003813f2d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff8000381459c8,5,ffff80003813f3d0,808,ffff80003813f480) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff8000381459c8,ffff80003813f530,ffff80003813f480) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003813f530) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003813f530) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe7f2ebbeaf0, count: -10 ddb> show registers rdi 0xffff80003994c000 rsi 0xbad rbp 0xffff80003813eed0 rbx 0xde rdx 0xffff80003994c000 rcx 0x100040600080100 rax 0xfffffd806e8f8ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xa8033a813eccc112 r11 0x395fdde7954a3082 r12 0x1e r13 0xfffffd806e8f8c00 r14 0xfffffd806b770568 r15 0xffff8000014affc0 rip 0xffffffff82d04fee arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003813ee50 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=355084 pid=68957 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=0xffff800038144cf8,0xffff800038145c68 process=0xffff80003c970db8 user=0xffff80003813a000, vmspace=0xfffffd8079757cb8 estcpu=1, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 63075 296273 84040 0 2 0 syz-executor 63075 56538 84040 0 3 0x4000080 fsleep syz-executor 99437 207788 77140 0 2 0 syz-executor 99437 320650 77140 0 3 0x4000080 piperd syz-executor 30950 162457 76541 0 2 0 syz-executor 30950 264871 76541 0 3 0x4000080 piperd syz-executor 76407 277532 82405 0 2 0 syz-executor 76407 38902 82405 0 3 0x4000080 fsleep syz-executor 76407 436132 82405 0 3 0x4000080 fsleep syz-executor 76407 201202 82405 0 2 0x4000000 syz-executor 48915 398399 93706 0 2 0 syz-executor 48915 35290 93706 0 3 0x4000080 fsleep syz-executor 68957 348664 27727 0 2 0 syz-executor *68957 355084 27727 0 7 0x4000000 syz-executor 1195 315505 51152 0 2 0 syz-executor 1195 56387 51152 0 3 0x4000080 fsleep syz-executor 16241 355618 32709 0 2 0 syz-executor 16241 40824 32709 0 2 0x4000000 syz-executor 3226 387276 0 0 3 0x14200 acct acct 27727 426508 4973 0 3 0x82 nanoslp syz-executor 32709 341857 4973 0 2 0xc82 syz-executor 93706 239432 4973 0 3 0x82 nanoslp syz-executor 84040 182691 4973 0 2 0xc82 syz-executor 77140 510501 4973 0 2 0xc82 syz-executor 51152 246978 4973 0 3 0x82 nanoslp syz-executor 82405 286554 4973 0 3 0x82 nanoslp syz-executor 76541 58181 4973 0 2 0xc82 syz-executor 4973 465278 32948 0 3 0x82 kqread syz-executor 32948 62396 23355 0 3 0x10008a sigsusp ksh 23355 199104 90423 0 3 0x98 kqread sshd-session 90423 37036 24193 0 3 0x92 kqread sshd-session 39872 61297 1 0 3 0x100083 ttyin getty 24193 21693 1 0 3 0x88 kqread sshd 51161 397461 75301 73 3 0x1100090 kqread syslogd 75301 266972 1 0 3 0x100082 sbwait syslogd 11945 366337 1 0 3 0x100080 kqread resolvd 74273 354473 93096 77 3 0x100092 kqread dhcpleased 69619 234182 93096 77 3 0x100092 kqread dhcpleased 93096 515275 1 0 3 0x80 kqread dhcpleased 91576 245199 0 0 3 0x14200 bored smr 15342 15370 0 0 2 0x14200 zerothread 47297 218026 0 0 3 0x14200 aiodoned aiodoned 88989 268432 0 0 3 0x14200 syncer update 91152 313204 0 0 3 0x14200 cleaner cleaner 23515 207602 0 0 3 0x14200 reaper reaper 53683 271833 0 0 3 0x14200 pgdaemon pagedaemon 2697 177438 0 0 3 0x14200 bored viomb 60266 418745 0 0 3 0x40014200 acpi0 acpi0 50892 329434 0 0 3 0x14200 bored softnet7 82772 111149 0 0 3 0x14200 bored softnet6 14748 407406 0 0 3 0x14200 bored softnet5 52538 456870 0 0 3 0x14200 bored softnet4 70004 216874 0 0 3 0x14200 bored softnet3 93980 264191 0 0 3 0x14200 bored softnet2 71286 442792 0 0 3 0x14200 bored softnet1 89150 295232 0 0 3 0x14200 bored softnet0 75031 387047 0 0 3 0x14200 bored systqmp 55219 122895 0 0 3 0x14200 bored systq 64577 231040 0 0 3 0x40014200 tmoslp softclock 18957 417506 0 0 3 0x40014200 idle0 1 183912 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 10184 11061K 11384K 166960K 11362 0 pcb 17 12K 12K 166960K 32 0 rtable 214 7K 7K 166960K 278 0 pf 31 13K 13K 166960K 31 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 53 2K 2K 166960K 53 0 sysctl 3 1K 9K 166960K 8 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 2K 166960K 34 0 iov 1 1K 1K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1345 85K 85K 166960K 1408 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 5 0K 0K 166960K 5 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 198 0 proc 60 59K 116K 166960K 479 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 6 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 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 353 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 229 159K 168K 166960K 3390 0 UVM aobj 3 2K 2K 166960K 4 0 pinsyscall 39 78K 96K 166960K 1230 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 3 0 NDP 11 0K 2K 166960K 27 0 temp 39 8663K 8727K 166960K 3962 0 kqueue 13 20K 30K 166960K 41 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 43 0 39 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 74 0 59 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 25 0 20 2 0 2 2 0 8 1 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 92 0 84 2 0 2 2 0 8 1 nd6 104 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 256 436 0 0 28 0 28 28 0 8 0 art_table 40 438 0 0 5 0 5 5 0 8 0 art_node 32 96 0 11 1 0 1 1 0 8 0 semapl 112 3 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 1 1 0 1 1 0 8 1 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1663 0 159 95 0 95 95 0 8 0 ffsino 248 1663 0 159 95 0 95 95 0 8 0 nchpl 144 1933 0 252 63 0 63 63 0 8 0 uvmvnodes 80 1779 0 0 37 0 37 37 0 8 0 vnodes 216 1779 0 0 99 0 99 99 0 8 0 namei 1024 5706 0 5706 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6996 0 6996 8 0 8 8 1 8 8 plimitpl 152 34 0 18 1 0 1 1 0 8 0 sigapl 424 483 0 432 7 0 7 7 0 8 1 knotepl 120 5456 0 5409 10 0 10 10 0 8 8 kqueuepl 184 51 0 41 2 0 2 2 0 8 1 pipepl 296 108 0 78 3 0 3 3 0 8 0 fdescpl 440 462 0 432 5 0 5 5 0 8 1 filepl 120 1682 0 1466 8 0 8 8 0 8 0 lockfpl 104 70 0 67 1 0 1 1 0 8 0 lockfspl 48 30 0 27 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 104 128 0 117 1 0 1 1 0 8 0 zombiepl 144 432 0 432 1 0 1 1 0 8 1 processpl 1160 483 0 432 5 0 5 5 0 8 1 procpl 656 594 0 533 7 0 7 7 0 8 1 sockpl 528 212 0 185 3 0 3 3 0 8 1 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2508 0 2457 14 0 14 14 0 8 6 mcl2k 2048 234 0 233 2 0 2 2 0 8 1 mtagpl 96 9 0 4 1 0 1 1 0 8 0 mbufpl 256 4322 0 4171 12 0 12 12 0 8 0 bufpl 280 2896 0 117 199 0 199 199 0 8 0 anonpl 24 95757 0 92592 23 0 23 23 0 187 3 amapchunkpl 152 9785 0 9289 22 0 22 22 0 158 2 amappl16 200 1663 0 1638 5 0 5 5 0 8 3 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 102 0 91 1 0 1 1 0 8 0 amappl13 176 26 0 25 1 0 1 1 0 8 0 amappl12 168 1073 0 1043 3 0 3 3 0 8 1 amappl11 160 45 0 35 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 0 1 1 0 8 1 amappl9 144 249 0 249 1 0 1 1 0 8 1 amappl8 136 29 0 28 1 0 1 1 0 8 0 amappl7 128 98 0 88 1 0 1 1 0 8 0 amappl6 120 173 0 169 1 0 1 1 0 8 0 amappl5 112 118 0 111 1 0 1 1 0 8 0 amappl4 104 262 0 245 1 0 1 1 0 8 0 amappl3 96 1589 0 1476 3 0 3 3 0 8 0 amappl2 88 606 0 553 2 0 2 2 0 8 0 amappl1 80 8113 0 7553 13 0 13 13 0 8 1 amappl 88 2740 0 2574 5 0 5 5 0 92 1 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 128 254 0 254 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 1 1 0 1 1 0 8 0 uaddrrnd 24 462 0 432 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 462 0 432 1 0 1 1 0 8 0 vmmpekpl 168 5200 0 5169 2 0 2 2 0 8 0 vmmpepl 168 35606 0 33724 84 0 84 84 0 357 2 vmsppl 360 461 0 432 4 0 4 4 0 8 1 rwobjpl 32 14173 0 11542 22 0 22 22 0 8 0 pdppl 4096 930 0 864 96 30 66 82 0 8 0 pvpl 32 223032 0 214308 79 0 79 79 0 265 5 pmappl 216 461 0 432 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 262 0 30 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003813f088,0,ffff80003813f000,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149ca00,ffff80003813f130,ffff80003813f088,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e8f8600,ffff80000140d4a0) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000140d4a0,fffffd806e8f8600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000140d4a0,0,ffff80003813f2d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff8000381459c8,5,ffff80003813f3d0,808,ffff80003813f480) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff8000381459c8,ffff80003813f530,ffff80003813f480) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003813f530) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003813f530) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe7f2ebbeaf0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b770568) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003813f088,0,ffff80003813f000,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149ca00,ffff80003813f130,ffff80003813f088,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e8f8600,ffff80000140d4a0) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff80000140d4a0,fffffd806e8f8600,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff80000140d4a0,0,ffff80003813f2d8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff8000381459c8,5,ffff80003813f3d0,808,ffff80003813f480) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff8000381459c8,ffff80003813f530,ffff80003813f480) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003813f530) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003813f530) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe7f2ebbeaf0, count: -10