uvm_fault(0xffffffff8399e350, 0xffff8000014a40ca, 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 *424147 24510 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c948ed8,0,ffff80003c948e50,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff8000014a1100,ffff80003c948f80,ffff80003c948ed8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e97a700,ffff800001493090) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001493090,fffffd806e97a700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001493090,0,ffff80003c949128,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f0cf0,3,ffff80003c949220,808,ffff80003c9492d0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f0cf0,ffff80003c949380,ffff80003c9492d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949380) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949380) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe4e8bcc6450, 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(0xffffffff8399e350, 0xffff8000014a40ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c948ed8,0,ffff80003c948e50,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff8000014a1100,ffff80003c948f80,ffff80003c948ed8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e97a700,ffff800001493090) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001493090,fffffd806e97a700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001493090,0,ffff80003c949128,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f0cf0,3,ffff80003c949220,808,ffff80003c9492d0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f0cf0,ffff80003c949380,ffff80003c9492d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949380) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949380) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe4e8bcc6450, count: -10 ddb> show registers rdi 0xffff80002ccfc000 rsi 0x94d rbp 0xffff80003c948d20 rbx 0xde rdx 0xffff80002ccfc000 rcx 0x100040600080100 rax 0xfffffd807ebb70e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xab38c8a44938a632 r11 0x7d5346fc58791735 r12 0x19 r13 0xfffffd807ebb7000 r14 0xfffffd806b8333d0 r15 0xffff8000014a3fe0 rip 0xffffffff821ff17e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c948ca0 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=424147 pid=24510 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=53, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a7f0020,0xffff80002a7f0550 process=0xffff800035d17b00 user=0xffff80003c944000, vmspace=0xfffffd806bdc72e8 estcpu=3, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 6319 441648 49288 0 2 0 syz-executor 6319 214192 49288 0 3 0x4000080 fsleep syz-executor 24510 71313 29550 0 2 0 syz-executor *24510 424147 29550 0 7 0x4000000 syz-executor 93879 113448 8196 0 2 0 syz-executor 93879 426530 8196 0 3 0x4000080 fsleep syz-executor 607 328949 82434 0 2 0 syz-executor 607 221004 82434 0 3 0x4000080 fsleep syz-executor 40459 496769 13028 0 2 0x10 syz-executor 40459 174992 13028 0 3 0x4000090 fsleep syz-executor 21531 271595 89860 0 3 0x82 sbwait sshd-session 99987 376984 64460 0 2 0 syz-executor 39436 361502 51903 0 2 0 syz-executor 39436 44106 51903 0 3 0x4000080 fsleep syz-executor 30112 223415 84325 0 2 0x100000 sh 84325 423575 2950 0 3 0x10008a sigsusp sh 2950 211613 55210 0 3 0x82 wait syz-executor 64460 36207 55210 0 2 0x2 syz-executor 13028 341143 55210 0 3 0x82 nanoslp syz-executor 8196 371102 55210 0 3 0x82 nanoslp syz-executor 49288 19789 55210 0 3 0x82 nanoslp syz-executor 82434 183070 55210 0 3 0x82 nanoslp syz-executor 29550 365852 55210 0 3 0x82 nanoslp syz-executor 51903 199520 55210 0 3 0x82 nanoslp syz-executor 55210 446698 11303 0 3 0x82 kqread syz-executor 11303 478504 37419 0 3 0x10008a sigsusp ksh 37419 113769 93664 0 3 0x98 kqread sshd-session 93664 312659 89860 0 3 0x92 kqread sshd-session 52571 223203 1 0 3 0x100083 ttyin getty 89860 151257 1 0 3 0x88 kqread sshd 83341 206068 8453 73 3 0x1100090 kqread syslogd 8453 521610 1 0 3 0x100082 sbwait syslogd 66620 35275 1 0 3 0x100080 kqread resolvd 66449 326135 57663 77 3 0x100092 kqread dhcpleased 30824 202136 57663 77 3 0x100092 kqread dhcpleased 57663 280286 1 0 3 0x80 kqread dhcpleased 54201 348256 0 0 3 0x14200 bored smr 80530 119789 0 0 2 0x14200 zerothread 5718 372088 0 0 3 0x14200 aiodoned aiodoned 31395 93229 0 0 3 0x14200 syncer update 12740 8152 0 0 3 0x14200 cleaner cleaner 57420 56127 0 0 3 0x14200 reaper reaper 68880 38391 0 0 3 0x14200 pgdaemon pagedaemon 70924 445451 0 0 3 0x14200 bored viomb 83986 171617 0 0 3 0x40014200 acpi0 acpi0 64630 132567 0 0 3 0x14200 bored softnet3 86143 261834 0 0 3 0x14200 bored softnet2 31073 190204 0 0 3 0x14200 bored softnet1 47631 297493 0 0 3 0x14200 bored softnet0 57396 460678 0 0 3 0x14200 bored systqmp 92598 209253 0 0 3 0x14200 bored systq 74236 337918 0 0 3 0x40014200 tmoslp softclock 47777 212790 0 0 3 0x40014200 idle0 1 371074 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 10170 11041K 11052K 166960K 11250 0 pcb 18 12K 12K 166960K 18 0 rtable 230 7K 7K 166960K 349 0 pf 30 12K 12K 166960K 30 0 ifaddr 40 7K 7K 166960K 42 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 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1338 84K 84K 166960K 1354 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 19 69K 97K 166960K 142 0 sigio 0 0K 0K 166960K 1 0 proc 58 59K 124K 166960K 469 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 2 0 in_multi 89 6K 6K 166960K 89 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 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 343 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 220 160K 163K 166960K 2816 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 42 84K 96K 166960K 1167 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 1 0 NDP 25 1K 1K 166960K 25 0 temp 34 8670K 8734K 166960K 3665 0 kqueue 14 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 33 1 0 1 1 0 8 0 rtentry 136 104 0 1 4 0 4 4 0 8 0 unpcb 144 37 0 18 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 11 0 5 1 0 1 1 0 8 0 arp 88 17 0 0 1 0 1 1 0 8 0 inpcb 328 64 0 52 2 0 2 2 0 8 1 nd6 104 21 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 256 411 0 0 26 0 26 26 0 8 0 art_table 32 413 0 0 4 0 4 4 0 8 0 art_node 16 103 0 9 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1555 0 51 94 0 94 94 0 8 0 ffsino 248 1555 0 51 94 0 94 94 0 8 0 nchpl 144 1751 0 73 63 0 63 63 0 8 0 uvmvnodes 80 1638 0 0 34 0 34 34 0 8 0 vnodes 216 1638 0 0 91 0 91 91 0 8 0 namei 1024 5117 0 5117 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5974 0 5974 8 0 8 8 1 8 8 plimitpl 152 29 0 13 1 0 1 1 0 8 0 sigapl 424 423 0 375 7 0 7 7 0 8 1 knotepl 120 3158 0 3106 2 0 2 2 0 8 0 kqueuepl 184 19 0 9 1 0 1 1 0 8 0 pipepl 296 99 0 72 3 0 3 3 0 8 0 fdescpl 440 407 0 375 5 0 5 5 0 8 1 filepl 120 1345 0 1126 7 0 7 7 0 8 0 lockfpl 104 8 0 6 1 0 1 1 0 8 0 lockfspl 48 5 0 3 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 30 0 13 1 0 1 1 0 8 0 ucredpl 104 75 0 63 1 0 1 1 0 8 0 zombiepl 144 375 0 375 1 0 1 1 0 8 1 processpl 1160 423 0 375 4 0 4 4 0 8 0 procpl 656 440 0 386 5 0 5 5 0 8 0 sockpl 528 139 0 103 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2396 0 2346 12 0 12 12 0 8 4 mcl2k 2048 184 0 180 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3944 0 3812 9 0 9 9 0 8 0 bufpl 280 2236 0 117 152 0 152 152 0 8 0 anonpl 24 87259 0 84028 22 0 22 22 0 187 2 amapchunkpl 152 7818 0 7371 18 0 18 18 0 158 0 amappl16 200 1506 0 1490 5 0 5 5 0 8 4 amappl15 192 24 0 24 1 0 1 1 0 8 1 amappl14 184 110 0 98 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 0 1 1 0 8 1 amappl12 168 1014 0 983 3 0 3 3 0 8 1 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 0 1 1 0 8 1 amappl9 144 249 0 249 1 0 1 1 0 8 1 amappl8 136 20 0 19 1 0 1 1 0 8 0 amappl7 128 100 0 89 1 0 1 1 0 8 0 amappl6 120 173 0 168 1 0 1 1 0 8 0 amappl5 112 116 0 109 1 0 1 1 0 8 0 amappl4 104 289 0 272 1 0 1 1 0 8 0 amappl3 96 1235 0 1133 3 0 3 3 0 8 0 amappl2 88 617 0 555 2 0 2 2 0 8 0 amappl1 80 8008 0 7369 14 0 14 14 0 8 0 amappl 88 2184 0 2036 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 24 407 0 375 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 407 0 375 1 0 1 1 0 8 0 vmmpekpl 168 4962 0 4938 2 0 2 2 0 8 0 vmmpepl 168 32529 0 30554 86 0 86 86 0 357 0 vmsppl 360 406 0 375 4 0 4 4 0 8 1 rwobjpl 32 13330 0 10762 21 0 21 21 0 8 0 pdppl 4096 821 0 750 97 14 83 83 0 8 12 pvpl 32 200593 0 191443 75 0 75 75 0 265 1 pmappl 216 406 0 375 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 252 0 14 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c948ed8,0,ffff80003c948e50,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff8000014a1100,ffff80003c948f80,ffff80003c948ed8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e97a700,ffff800001493090) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001493090,fffffd806e97a700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001493090,0,ffff80003c949128,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f0cf0,3,ffff80003c949220,808,ffff80003c9492d0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f0cf0,ffff80003c949380,ffff80003c9492d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949380) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949380) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe4e8bcc6450, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8333d0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:182 rtrequest(1,ffff80003c948ed8,0,ffff80003c948e50,16) at rtrequest+0xd4c sys/net/route.c:1114 rtm_output(ffff8000014a1100,ffff80003c948f80,ffff80003c948ed8,0,16) at rtm_output+0x855 sys/net/rtsock.c:970 route_output(fffffd806e97a700,ffff800001493090) at route_output+0x9ac sys/net/rtsock.c:875 route_send(ffff800001493090,fffffd806e97a700,0,0) at route_send+0xd7 sys/net/rtsock.c:339 sosend(ffff800001493090,0,ffff80003c949128,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f0cf0,3,ffff80003c949220,808,ffff80003c9492d0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80002a7f0cf0,ffff80003c949380,ffff80003c9492d0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c949380) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c949380) at syscall+0x97e sys/arch/amd64/amd64/trap.c:742 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe4e8bcc6450, count: -10