uvm_fault(0xffffffff83959040, 0xffff8000014a202a, 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 *379972 97897 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd1d6f8,0,ffff80002cd1d670,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149fb00,ffff80002cd1d7a0,ffff80002cd1d6f8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800b3d8f00,ffff8000014239e8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff8000014239e8,fffffd800b3d8f00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014239e8,0,ffff80002cd1d948,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c993218,3,ffff80002cd1da40,808,ffff80002cd1daf0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c993218,ffff80002cd1dba0,ffff80002cd1daf0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80002cd1dba0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd1dba0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4970054bd60, 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(0xffffffff83959040, 0xffff8000014a202a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd1d6f8,0,ffff80002cd1d670,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149fb00,ffff80002cd1d7a0,ffff80002cd1d6f8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800b3d8f00,ffff8000014239e8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff8000014239e8,fffffd800b3d8f00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014239e8,0,ffff80002cd1d948,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c993218,3,ffff80002cd1da40,808,ffff80002cd1daf0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c993218,ffff80002cd1dba0,ffff80002cd1daf0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80002cd1dba0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd1dba0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4970054bd60, count: -10 ddb> show registers rdi 0xffff800035d3a000 rsi 0x93a rbp 0xffff80002cd1d540 rbx 0xde rdx 0xffff800035d3a000 rcx 0x100040600080100 rax 0xfffffd800b3d81e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x64b4470d91b76403 r11 0x9114b5d9992f6bfc r12 0x1a r13 0xfffffd800b3d8100 r14 0xfffffd806b6eb5f0 r15 0xffff8000014a1f40 rip 0xffffffff82b6378e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002cd1d4c0 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=379972 pid=97897 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=0xffff80003c993738,0xffff80003c992f98 process=0xffff80003c979250 user=0xffff80002cd18000, vmspace=0xfffffd806bbbcb90 estcpu=1, cpticks=2, pctcpu=0.0, user=1, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 25967 316654 26244 0 2 0 syz-executor 97897 313552 63649 0 2 0 syz-executor *97897 379972 63649 0 7 0x4000000 syz-executor 17460 136819 30291 0 2 0 syz-executor 17460 359977 30291 0 3 0x4000080 fsleep syz-executor 17460 423386 30291 0 3 0x4000080 fsleep syz-executor 17460 84655 30291 0 3 0x4000080 fsleep syz-executor 2258 422349 64441 0 2 0 syz-executor 2258 178479 64441 0 3 0x4000080 kqread syz-executor 2258 356170 64441 0 2 0x4000000 syz-executor 43982 130312 68033 0 2 0 syz-executor 43982 121142 68033 0 3 0x4000080 fsleep syz-executor 48278 394064 91463 60929 2 0x10 syz-executor 48278 156116 91463 60929 2 0x4000010 syz-executor 48278 403148 91463 60929 3 0x4000090 fsleep syz-executor 26244 107685 2512 0 3 0x82 nanoslp syz-executor 24268 4486 2512 0 2 0x2 syz-executor 63649 329404 2512 0 3 0x82 nanoslp syz-executor 64441 501208 2512 0 3 0x82 nanoslp syz-executor 30291 51323 2512 0 3 0x82 nanoslp syz-executor 90996 88229 2512 0 2 0x2 syz-executor 91463 164746 2512 0 3 0x82 nanoslp syz-executor 68033 343298 2512 0 3 0x82 nanoslp syz-executor 2512 430980 23424 0 3 0x82 kqread syz-executor 23424 304152 508 0 3 0x10008a sigsusp ksh 508 286066 43701 0 3 0x98 kqread sshd-session 43701 159090 60398 0 3 0x92 kqread sshd-session 70118 118984 1 0 3 0x100083 ttyin getty 60398 17196 1 0 3 0x88 kqread sshd 22127 504623 25014 73 3 0x1100090 kqread syslogd 25014 288660 1 0 3 0x100082 sbwait syslogd 21836 313840 1 0 3 0x100080 kqread resolvd 96285 186422 90438 77 3 0x100092 kqread dhcpleased 37345 358736 90438 77 3 0x100092 kqread dhcpleased 90438 509266 1 0 3 0x80 kqread dhcpleased 8422 512442 0 0 3 0x14200 bored smr 73336 244334 0 0 2 0x14200 zerothread 93798 295749 0 0 3 0x14200 aiodoned aiodoned 43175 78615 0 0 3 0x14200 syncer update 96208 135054 0 0 3 0x14200 cleaner cleaner 20725 92462 0 0 3 0x14200 reaper reaper 99253 56346 0 0 3 0x14200 pgdaemon pagedaemon 48011 449676 0 0 3 0x14200 bored viomb 62818 277903 0 0 3 0x40014200 acpi0 acpi0 12788 75127 0 0 3 0x14200 bored softnet7 22761 436426 0 0 3 0x14200 bored softnet6 24145 348367 0 0 3 0x14200 bored softnet5 34261 125454 0 0 3 0x14200 bored softnet4 43789 332068 0 0 3 0x14200 bored softnet3 37826 156444 0 0 3 0x14200 bored softnet2 54279 212904 0 0 3 0x14200 bored softnet1 75348 377767 0 0 3 0x14200 bored softnet0 64227 134820 0 0 3 0x14200 smrbar systqmp 47465 232370 0 0 3 0x14200 bored systq 79980 162441 0 0 3 0x40014200 tmoslp softclock 99069 378843 0 0 3 0x40014200 idle0 1 97422 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 10173 11056K 11056K 166960K 11250 0 pcb 17 12K 12K 166960K 17 0 rtable 214 7K 7K 166960K 276 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 1337 84K 84K 166960K 1353 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 16 57K 97K 166960K 137 0 proc 58 59K 124K 166960K 473 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 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 206 150K 159K 166960K 2798 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 37 74K 96K 166960K 1169 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 34 8662K 8726K 166960K 3679 0 kqueue 15 22K 22K 166960K 23 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 34 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 7 0 3 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 55 0 48 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 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1549 0 43 95 0 95 95 0 8 0 ffsino 256 1550 0 43 95 0 95 95 0 8 0 nchpl 144 1731 0 48 63 0 63 63 0 8 0 uvmvnodes 80 1632 0 0 34 0 34 34 0 8 0 vnodes 216 1632 0 0 91 0 91 91 0 8 0 namei 1024 5056 0 5053 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6026 0 6026 8 0 8 8 1 8 8 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 421 0 373 7 0 7 7 0 8 1 knotepl 120 2994 0 2944 2 0 2 2 0 8 0 kqueuepl 184 19 0 8 1 0 1 1 0 8 0 pipepl 304 99 0 72 3 0 3 3 0 8 0 fdescpl 448 401 0 373 5 0 5 5 0 8 1 filepl 120 1275 0 1066 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 65 0 53 1 0 1 1 0 8 0 zombiepl 144 373 0 373 1 0 1 1 0 8 1 processpl 1168 421 0 373 5 0 5 5 0 8 1 procpl 656 434 0 377 6 0 6 6 0 8 0 sockpl 552 124 0 97 3 0 3 3 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2412 0 2362 13 0 13 13 0 8 3 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 3702 0 3566 9 0 9 9 0 8 0 bufpl 280 2806 0 117 193 0 193 193 0 8 0 anonpl 24 88295 0 85427 23 0 23 23 0 187 3 amapchunkpl 152 7802 0 7380 17 0 17 17 0 158 0 amappl16 200 1476 0 1464 5 0 5 5 0 8 4 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 0 1 1 0 8 1 amappl12 168 1042 0 1015 3 0 3 3 0 8 1 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 0 1 1 0 8 1 amappl9 144 248 0 248 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 100 0 90 1 0 1 1 0 8 0 amappl6 120 174 0 169 1 0 1 1 0 8 0 amappl5 112 133 0 127 1 0 1 1 0 8 0 amappl4 104 268 0 253 1 0 1 1 0 8 0 amappl3 96 1165 0 1072 3 0 3 3 0 8 0 amappl2 88 607 0 554 2 0 2 2 0 8 0 amappl1 80 7920 0 7378 13 0 13 13 0 8 0 amappl 88 2166 0 2022 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 401 0 373 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 401 0 373 1 0 1 1 0 8 0 vmmpekpl 168 4796 0 4772 2 0 2 2 0 8 0 vmmpepl 168 32112 0 30385 80 0 80 80 0 357 2 vmsppl 368 400 0 373 4 0 4 4 0 8 1 rwobjpl 40 13197 0 10758 26 0 26 26 0 8 0 pdppl 4096 808 0 746 96 14 82 82 0 8 20 pvpl 32 197756 0 190139 69 0 69 69 0 265 4 pmappl 216 400 0 373 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 364 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd1d6f8,0,ffff80002cd1d670,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149fb00,ffff80002cd1d7a0,ffff80002cd1d6f8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800b3d8f00,ffff8000014239e8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff8000014239e8,fffffd800b3d8f00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014239e8,0,ffff80002cd1d948,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c993218,3,ffff80002cd1da40,808,ffff80002cd1daf0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c993218,ffff80002cd1dba0,ffff80002cd1daf0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80002cd1dba0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd1dba0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4970054bd60, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b6eb5f0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80002cd1d6f8,0,ffff80002cd1d670,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff80000149fb00,ffff80002cd1d7a0,ffff80002cd1d6f8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd800b3d8f00,ffff8000014239e8) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff8000014239e8,fffffd800b3d8f00,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff8000014239e8,0,ffff80002cd1d948,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c993218,3,ffff80002cd1da40,808,ffff80002cd1daf0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c993218,ffff80002cd1dba0,ffff80002cd1daf0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80002cd1dba0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002cd1dba0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x4970054bd60, count: -10