uvm_fault(0xffffffff839397f0, 0xffff80000149802a, 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 *342673 16311 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c94d478,0,ffff80003c94d3f0,0) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff800001495100,ffff80003c94d520,ffff80003c94d478,0,0) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806d70cb00,ffff800010fda220) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fda220,fffffd806d70cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fda220,0,ffff80003c94d6c8,0,0,0) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003852b9c8,3,ffff80003c94d7c0,0,ffff80003c94d870) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003852b9c8,ffff80003c94d920,ffff80003c94d870) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c94d920) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94d920) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b13408280, 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(0xffffffff839397f0, 0xffff80000149802a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c94d478,0,ffff80003c94d3f0,0) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff800001495100,ffff80003c94d520,ffff80003c94d478,0,0) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806d70cb00,ffff800010fda220) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fda220,fffffd806d70cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fda220,0,ffff80003c94d6c8,0,0,0) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003852b9c8,3,ffff80003c94d7c0,0,ffff80003c94d870) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003852b9c8,ffff80003c94d920,ffff80003c94d870) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c94d920) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94d920) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b13408280, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c94d2c0 rbx 0xde rdx 0 rcx 0x100040600080100 rax 0xfffffd806d70c4e0 r8 0x10 r9 0xfffffd8071554898 r10 0x805af2066dfbc3f8 r11 0x50e1e96685582a59 r12 0x1d r13 0xfffffd806d70c400 r14 0xfffffd8071554898 r15 0xffff800001497f40 rip 0xffffffff81f1c00e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c94d240 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=342673 pid=16311 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=0xffff80003852a2b8,0xffff80003852b748 process=0xffff800035d15fd0 user=0xffff80003c948000, vmspace=0xfffffd8068fbf2e8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14624 487692 8162 0 2 0 syz-executor 14624 37890 8162 0 2 0x4000000 syz-executor 41140 114819 94680 0 2 0 syz-executor 41140 32306 94680 0 2 0x4000000 syz-executor 29180 443122 45496 0 2 0 syz-executor 29180 164794 45496 0 3 0x4000080 fsleep syz-executor 16311 414998 43102 0 2 0 syz-executor *16311 342673 43102 0 7 0x4000000 syz-executor 23267 82131 29991 0 2 0 syz-executor 23267 248435 29991 0 2 0x4000000 syz-executor 42607 252304 77946 0 2 0x10 syz-executor 42607 63850 77946 0 3 0x4000090 fsleep syz-executor 19996 480851 76352 0 2 0 syz-executor 19996 123899 76352 0 3 0x4000080 fsleep syz-executor 93504 419669 0 0 3 0x14200 acct acct 56151 179764 0 0 3 0x14200 bored sosplice 29991 499174 30474 0 3 0x82 nanoslp syz-executor 8162 167000 30474 0 3 0x82 nanoslp syz-executor 43102 206456 30474 0 3 0x82 nanoslp syz-executor 94680 305930 30474 0 3 0x82 nanoslp syz-executor 13965 424157 30474 0 3 0x82 nanoslp syz-executor 76352 387723 30474 0 3 0x82 nanoslp syz-executor 45496 444956 30474 0 3 0x82 nanoslp syz-executor 77946 244824 30474 0 3 0x82 nanoslp syz-executor 30474 481346 31081 0 3 0x82 kqread syz-executor 31081 71845 63051 0 3 0x10008a sigsusp ksh 63051 489509 47488 0 3 0x98 kqread sshd-session 47488 420666 73798 0 3 0x92 kqread sshd-session 61745 152323 1 0 3 0x100083 ttyin getty 73798 19227 1 0 3 0x88 kqread sshd 97150 467453 51728 73 3 0x1100090 kqread syslogd 51728 126935 1 0 3 0x100082 sbwait syslogd 3618 110181 1 0 3 0x100080 kqread resolvd 51650 272719 48566 77 3 0x100092 kqread dhcpleased 52928 184917 48566 77 3 0x100092 kqread dhcpleased 48566 265102 1 0 3 0x80 kqread dhcpleased 20219 51683 0 0 3 0x14200 bored smr 39080 437308 0 0 2 0x14200 zerothread 83428 10835 0 0 3 0x14200 aiodoned aiodoned 82235 386221 0 0 3 0x14200 syncer update 83730 81337 0 0 3 0x14200 cleaner cleaner 47971 226986 0 0 3 0x14200 reaper reaper 61933 373905 0 0 3 0x14200 pgdaemon pagedaemon 10738 180942 0 0 3 0x14200 bored viomb 3030 2299 0 0 3 0x40014200 acpi0 acpi0 52765 232432 0 0 3 0x14200 bored softnet3 74443 351615 0 0 3 0x14200 bored softnet2 12770 137809 0 0 3 0x14200 bored softnet1 16814 69547 0 0 3 0x14200 bored softnet0 95260 284260 0 0 2 0x14200 systqmp 87728 66254 0 0 3 0x14200 bored systq 33760 117374 0 0 3 0x40014200 tmoslp softclock 18936 74448 0 0 3 0x40014200 idle0 1 362345 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10172 11041K 11510K 166960K 11336 0 pcb 19 12K 12K 166960K 30 0 rtable 237 6K 6K 166960K 358 0 pf 30 12K 13K 166960K 32 0 ifaddr 42 7K 7K 166960K 45 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 34 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1344 85K 85K 166960K 1530 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 3 0K 0K 166960K 3 0 dirhash 15 2K 3K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 188 0 proc 58 59K 124K 166960K 486 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 99 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 5 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 348 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 214 127K 137K 166960K 3156 0 UVM aobj 3 2K 2K 166960K 4 0 pinsyscall 39 78K 96K 166960K 1215 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 11 0K 2K 166960K 28 0 temp 37 8678K 8742K 166960K 3976 0 kqueue 14 22K 24K 166960K 37 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 136 114 0 3 4 0 4 4 0 8 0 unpcb 144 63 0 46 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 22 0 17 1 0 1 1 0 8 0 arp 88 18 0 0 1 0 1 1 0 8 0 inpcb 328 93 0 83 2 0 2 2 0 8 0 nd6 104 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 1 0 1 1 0 1 1 0 8 1 pfrule 1344 1 0 1 1 0 1 1 0 8 1 rttmr 136 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 515 0 62 31 0 31 31 0 8 2 art_table 32 516 0 62 4 0 4 4 0 8 0 art_node 16 113 0 12 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 shmpl 112 1 0 1 1 0 1 1 0 8 1 dirhash 1024 23 0 4 3 0 3 3 0 8 0 dino2pl 256 1783 0 276 95 0 95 95 0 8 0 ffsino 248 1783 0 276 95 0 95 95 0 8 0 nchpl 144 2028 0 348 63 0 63 63 0 8 0 uvmvnodes 80 1887 0 0 39 0 39 39 0 8 0 vnodes 216 1887 0 0 105 0 105 105 0 8 0 namei 1024 6211 0 6211 2 0 2 2 0 8 2 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6004 0 6004 3 0 3 3 1 8 3 plimitpl 152 31 0 14 1 0 1 1 0 8 0 sigapl 424 469 0 421 7 0 7 7 0 8 1 knotepl 120 5925 0 5876 9 0 9 9 0 8 7 kqueuepl 184 37 0 27 1 0 1 1 0 8 0 pipepl 296 101 0 74 3 0 3 3 0 8 0 fdescpl 440 450 0 420 5 0 5 5 0 8 1 filepl 120 1973 0 1754 11 0 11 11 0 8 3 lockfpl 104 28 0 26 1 0 1 1 0 8 0 lockfspl 48 13 0 11 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 520 0 507 1 0 1 1 0 8 0 zombiepl 144 422 0 421 1 0 1 1 0 8 0 processpl 1160 469 0 421 4 0 4 4 0 8 0 procpl 656 555 0 500 6 0 6 6 0 8 0 sockpl 528 196 0 165 3 0 3 3 0 8 0 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2506 0 2453 14 0 14 14 0 8 7 mcl2k 2048 158 0 158 1 0 1 1 0 8 1 mtagpl 96 6 0 5 1 0 1 1 0 8 0 mbufpl 256 4428 0 4276 10 0 10 10 0 8 0 bufpl 280 2303 0 117 157 0 157 157 0 8 0 anonpl 24 94751 0 89591 32 0 32 32 0 187 0 amapchunkpl 152 9153 0 8562 23 0 23 23 0 158 0 amappl16 200 1608 0 1582 5 0 5 5 0 8 3 amappl15 192 28 0 28 1 0 1 1 0 8 1 amappl14 184 107 0 97 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1060 0 1029 3 0 3 3 0 8 1 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 20 0 20 1 0 1 1 0 8 1 amappl9 144 271 0 271 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 183 0 180 1 0 1 1 0 8 0 amappl5 112 110 0 104 1 0 1 1 0 8 0 amappl4 104 287 0 272 1 0 1 1 0 8 0 amappl3 96 1512 0 1405 3 0 3 3 0 8 0 amappl2 88 624 0 569 2 0 2 2 0 8 0 amappl1 80 8273 0 7719 14 0 14 14 0 8 1 amappl 88 2520 0 2366 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 128 254 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 24 450 0 420 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 450 0 420 1 0 1 1 0 8 0 vmmpekpl 168 5307 0 5280 2 0 2 2 0 8 0 vmmpepl 168 35202 0 33341 88 0 88 88 0 357 5 vmsppl 360 449 0 420 4 0 4 4 0 8 1 rwobjpl 32 14244 0 11525 23 0 23 23 0 8 0 pdppl 4096 907 0 840 97 28 69 83 0 8 2 pvpl 32 217624 0 206801 88 0 88 88 0 265 0 pmappl 216 449 0 420 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 261 0 28 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c94d478,0,ffff80003c94d3f0,0) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff800001495100,ffff80003c94d520,ffff80003c94d478,0,0) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806d70cb00,ffff800010fda220) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fda220,fffffd806d70cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fda220,0,ffff80003c94d6c8,0,0,0) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003852b9c8,3,ffff80003c94d7c0,0,ffff80003c94d870) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003852b9c8,ffff80003c94d920,ffff80003c94d870) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c94d920) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94d920) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b13408280, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd8071554898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c94d478,0,ffff80003c94d3f0,0) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff800001495100,ffff80003c94d520,ffff80003c94d478,0,0) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806d70cb00,ffff800010fda220) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fda220,fffffd806d70cb00,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fda220,0,ffff80003c94d6c8,0,0,0) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003852b9c8,3,ffff80003c94d7c0,0,ffff80003c94d870) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003852b9c8,ffff80003c94d920,ffff80003c94d870) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c94d920) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c94d920) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75b13408280, count: -10