login: uvm_fault(0xffffffff83896430, 0xffff8000014d10aa, 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 *187698 26419 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038159770,0,ffff8000381596e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014b6d00,ffff800038159818,ffff800038159770,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806eb68800,ffff800001486ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001486ad8,fffffd806eb68800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001486ad8,0,ffff8000381599c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5248,8,ffff800038159ac0,808,ffff800038159b60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5248,ffff800038159c10,ffff800038159b60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038159c10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038159c10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72627ddae50, 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(0xffffffff83896430, 0xffff8000014d10aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038159770,0,ffff8000381596e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014b6d00,ffff800038159818,ffff800038159770,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806eb68800,ffff800001486ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001486ad8,fffffd806eb68800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001486ad8,0,ffff8000381599c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5248,8,ffff800038159ac0,808,ffff800038159b60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5248,ffff800038159c10,ffff800038159b60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038159c10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038159c10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72627ddae50, count: -10 ddb> show registers rdi 0xffff80002a924000 rsi 0x95f rbp 0xffff8000381595c0 rbx 0xde rdx 0xffff80002a924000 rcx 0xffff8000014d0fc0 rax 0xfffffd806eb689e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x2e37313222e94ae3 r11 0x156e35cdaa836910 r12 0x19 r13 0xfffffd806eb68900 r14 0xfffffd807ced0e60 r15 0xffff800000039058 rip 0xffffffff81de2297 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800038159540 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=187698 pid=26419 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=0xffff80002a7f5778,0xffffffff83910bd0 process=0xffff8000ffff71a0 user=0xffff800038154000, vmspace=0xfffffd807ced68b8 estcpu=36, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26419 501298 61953 0 2 0 syz-executor *26419 187698 61953 0 7 0x4000000 syz-executor 65048 102171 22789 0 2 0 syz-executor 65048 103416 22789 0 3 0x4000080 fsleep syz-executor 65048 106301 22789 0 3 0x4000080 fsleep syz-executor 65048 36516 22789 0 3 0x4000080 fsleep syz-executor 2979 64025 82831 0 2 0 syz-executor 2979 431133 82831 0 3 0x4000000 clonelk syz-executor 2979 72906 82831 0 3 0x4000000 clonelk syz-executor 44673 481244 12585 0 2 0 syz-executor 44673 265099 12585 0 3 0x4000000 smrbar syz-executor 42518 256841 54610 0 2 0 syz-executor 42518 105855 54610 0 3 0x4000080 fsleep syz-executor 76327 24633 47529 -1 2 0xc90 syz-executor 76327 182633 47529 -1 3 0x4000090 kqsel syz-executor 76327 41995 47529 -1 3 0x4000090 fsleep syz-executor 17333 166893 85102 0 3 0x3000 suspend syz-executor 17333 269637 85102 0 2 0x4081000 syz-executor 67879 186873 0 0 3 0x14200 acct acct 55156 257835 0 0 3 0x14200 bored sosplice 47529 307827 94707 0 2 0xc82 syz-executor 22789 79270 94707 0 3 0x82 nanoslp syz-executor 85102 214464 94707 0 2 0xc82 syz-executor 12585 78999 94707 0 3 0x82 nanoslp syz-executor 60371 119983 94707 0 2 0x2 syz-executor 54610 119408 94707 0 3 0x82 nanoslp syz-executor 82831 110988 94707 0 3 0x82 nanoslp syz-executor 61953 27299 94707 0 2 0xc82 syz-executor 94707 229307 23880 0 3 0x82 kqread syz-executor 23880 194587 99259 0 3 0x10008a sigsusp ksh 99259 414256 429 0 3 0x98 kqread sshd-session 429 171386 88511 0 3 0x92 kqread sshd-session 4609 51862 1 0 3 0x100083 ttyin getty 88511 468405 1 0 3 0x88 kqread sshd 42226 402525 31149 73 3 0x1100090 kqread syslogd 31149 511517 1 0 3 0x100082 sbwait syslogd 21770 487383 1 0 3 0x100080 kqread resolvd 82295 376661 96510 77 3 0x100092 kqread dhcpleased 10867 486198 96510 77 3 0x100092 kqread dhcpleased 96510 376101 1 0 3 0x80 kqread dhcpleased 85009 384484 0 0 3 0x14200 bored smr 54218 127186 0 0 2 0x14200 zerothread 97106 440412 0 0 3 0x14200 aiodoned aiodoned 4152 375381 0 0 3 0x14200 syncer update 12882 388819 0 0 3 0x14200 cleaner cleaner 32837 287848 0 0 3 0x14200 reaper reaper 65469 51865 0 0 3 0x14200 pgdaemon pagedaemon 63269 404206 0 0 3 0x14200 bored viomb 81254 76569 0 0 3 0x40014200 acpi0 acpi0 2012 192390 0 0 3 0x14200 bored softnet7 37205 443521 0 0 3 0x14200 bored softnet6 52300 313902 0 0 3 0x14200 bored softnet5 19705 474102 0 0 3 0x14200 bored softnet4 89936 328066 0 0 3 0x14200 bored softnet3 25516 82844 0 0 3 0x14200 bored softnet2 61824 150139 0 0 3 0x14200 bored softnet1 80924 316155 0 0 3 0x14200 bored softnet0 68550 65840 0 0 3 0x14200 smrbar systqmp 23575 238810 0 0 3 0x14200 bored systq 77932 198548 0 0 3 0x40014200 tmoslp softclock 65929 465804 0 0 3 0x40014200 idle0 1 508266 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 10186 11110K 11288K 166960K 11397 0 pcb 19 12K 12K 166960K 45 0 rtable 182 7K 7K 166960K 322 0 pf 32 13K 17K 166960K 44 0 ifaddr 37 6K 6K 166960K 51 0 ifgroup 54 2K 2K 166960K 62 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 18K 166960K 167 0 ioctlops 0 0K 4K 166960K 175 0 iov 0 0K 12K 166960K 73 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1406 88K 89K 166960K 1513 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 6 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 254 0 sigio 1 0K 0K 166960K 5 0 proc 60 59K 91K 166960K 483 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 17 0 in_multi 75 5K 6K 166960K 101 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 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 420 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 228 159K 168K 166960K 3751 0 UVM aobj 7 4K 4K 166960K 7 0 pinsyscall 38 76K 94K 166960K 1279 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 5 0 NDP 12 0K 1K 166960K 32 0 temp 75 8648K 8712K 166960K 5754 0 kqueue 15 24K 30K 166960K 59 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 47 0 43 1 0 1 1 0 8 0 rtentry 136 101 0 30 3 0 3 3 0 8 0 unpcb 144 91 0 75 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 35 0 28 1 0 1 1 0 8 0 arp 88 10 0 1 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 194 0 182 7 0 7 7 0 8 5 nd6 104 19 0 4 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 134 0 134 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 461 0 137 26 0 26 26 0 8 3 art_table 40 464 0 137 5 0 5 5 0 8 0 art_node 32 100 0 36 1 0 1 1 0 8 0 sysvmsgpl 40 67 0 67 1 0 1 1 0 8 1 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1775 0 272 95 0 95 95 0 8 0 ffsino 256 1775 0 272 95 0 95 95 0 8 0 nchpl 144 2143 0 460 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 1971 0 0 41 0 41 41 0 8 0 vnodes 216 1971 0 0 110 0 110 110 0 8 0 namei 1024 6868 0 6867 2 0 2 2 0 8 1 kstatmem 264 32 0 8 2 0 2 2 0 8 0 scxspl 216 8034 0 8034 8 0 8 8 1 8 8 plimitpl 152 47 0 31 1 0 1 1 0 8 0 sigapl 424 538 0 487 7 0 7 7 0 8 0 knotepl 120 11547 0 11265 17 7 10 17 0 8 1 kqueuepl 184 163 0 151 3 0 3 3 0 8 2 pipepl 304 112 0 84 3 0 3 3 0 8 0 fdescpl 448 516 0 487 5 0 5 5 0 8 1 filepl 120 2157 0 1934 10 0 10 10 0 8 3 lockfpl 104 33 0 28 1 0 1 1 0 8 0 lockfspl 48 17 0 13 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 33 0 17 1 0 1 1 0 8 0 ucredpl 104 180 0 168 1 0 1 1 0 8 0 zombiepl 144 488 0 487 1 0 1 1 0 8 0 processpl 1152 538 0 487 5 0 5 5 0 8 1 procpl 664 730 0 668 6 0 6 6 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 552 336 0 304 7 0 7 7 0 8 4 mcl64k 65536 7 0 7 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2577 0 2523 13 0 13 13 0 8 5 mcl2k 2048 345 0 341 5 0 5 5 0 8 4 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 5117 0 4961 14 0 14 14 0 8 1 bufpl 280 3287 0 113 227 0 227 227 0 8 0 anonpl 24 117043 0 113656 45 0 45 45 0 187 20 amapchunkpl 152 11594 0 11105 23 0 23 23 0 158 2 amappl16 200 2322 0 2280 15 0 15 15 0 8 12 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 135 0 125 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 0 1 1 0 8 1 amappl12 168 1125 0 1095 3 0 3 3 0 8 0 amappl11 160 50 0 40 1 0 1 1 0 8 0 amappl10 152 6 0 6 1 0 1 1 0 8 1 amappl9 144 257 0 257 1 0 1 1 0 8 1 amappl8 136 25 0 24 1 0 1 1 0 8 0 amappl7 128 119 0 109 1 0 1 1 0 8 0 amappl6 120 189 0 186 1 0 1 1 0 8 0 amappl5 112 109 0 103 1 0 1 1 0 8 0 amappl4 104 278 0 262 1 0 1 1 0 8 0 amappl3 96 1812 0 1718 3 0 3 3 0 8 0 amappl2 88 743 0 671 2 0 2 2 0 8 0 amappl1 80 8307 0 7761 13 0 13 13 0 8 1 amappl 88 3100 0 2937 5 0 5 5 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 7 0 7 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 6 0 0 1 0 1 1 0 8 0 uaddrrnd 24 516 0 487 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 516 0 487 1 0 1 1 0 8 0 vmmpekpl 168 5511 0 5479 2 0 2 2 0 8 0 vmmpepl 168 39231 0 37375 94 0 94 94 0 357 10 vmsppl 368 515 0 487 4 0 4 4 0 8 1 rwobjpl 40 15447 0 12612 31 0 31 31 0 8 1 pdppl 4096 1038 0 974 102 36 66 80 0 8 2 pvpl 32 258555 0 249810 102 0 102 102 0 265 26 pmappl 216 515 0 487 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 374 0 36 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038159770,0,ffff8000381596e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014b6d00,ffff800038159818,ffff800038159770,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806eb68800,ffff800001486ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001486ad8,fffffd806eb68800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001486ad8,0,ffff8000381599c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5248,8,ffff800038159ac0,808,ffff800038159b60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5248,ffff800038159c10,ffff800038159b60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038159c10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038159c10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72627ddae50, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd807ced0e60) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038159770,0,ffff8000381596e0,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff8000014b6d00,ffff800038159818,ffff800038159770,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806eb68800,ffff800001486ad8) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001486ad8,fffffd806eb68800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001486ad8,0,ffff8000381599c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5248,8,ffff800038159ac0,808,ffff800038159b60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5248,ffff800038159c10,ffff800038159b60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038159c10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038159c10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x72627ddae50, count: -10