uvm_fault(0xffffffff8391bc18, 0xffff8000014bb00a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *196796 6285 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963060,0,ffff80003c962fd0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499a00,ffff80003c963108,ffff80003c963060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807dfdee00,ffff800001481c18) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001481c18,fffffd807dfdee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001481c18,0,ffff80003c9632b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c951248,4,ffff80003c9633b0,808,ffff80003c963450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c951248,ffff80003c963500,ffff80003c963450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e98d58a940, 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(0xffffffff8391bc18, 0xffff8000014bb00a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963060,0,ffff80003c962fd0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499a00,ffff80003c963108,ffff80003c963060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807dfdee00,ffff800001481c18) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001481c18,fffffd807dfdee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001481c18,0,ffff80003c9632b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c951248,4,ffff80003c9633b0,808,ffff80003c963450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c951248,ffff80003c963500,ffff80003c963450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e98d58a940, count: -10 ddb> show registers rdi 0xffff80003390e000 rsi 0x633 rbp 0xffff80003c962eb0 rbx 0xde rdx 0xffff80003390e000 rcx 0xffff8000014baf20 rax 0xfffffd807dfdefe0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x351a7dc22c7aeaf5 r11 0x1db39b113c570f85 r12 0x1c r13 0xfffffd807dfdef00 r14 0xfffffd8070d1a4e0 r15 0xffff800000039058 rip 0xffffffff82e82c54 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c962e30 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=196796 pid=6285 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=0xffff80003c950550,0xffffffff8384e2a8 process=0xffff80002f0fdb18 user=0xffff80003c95e000, vmspace=0xfffffd806ba1c740 estcpu=14, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 6285 112275 33802 0 2 0 syz-executor * 6285 196796 33802 0 7 0x4000000 syz-executor 18335 365967 1017 0 2 0 syz-executor 18335 116785 1017 0 3 0x4000080 fsleep syz-executor 18335 292890 1017 0 3 0x4000080 fsleep syz-executor 18335 510481 1017 0 3 0x4000080 fsleep syz-executor 42107 298158 59727 0 2 0 syz-executor 42107 125760 59727 0 3 0x4000080 sbwait syz-executor 33623 370321 50465 0 2 0 syz-executor 33623 362630 50465 0 2 0x4000000 syz-executor 31134 522668 91714 0 2 0 syz-executor 31134 254611 91714 0 3 0x4000080 lockf syz-executor 73851 249204 29863 0 3 0x80 nanoslp syz-executor 73851 8977 29863 0 3 0x4000080 ttyout syz-executor 78427 518494 10390 0 3 0x80 nanoslp syz-executor 78427 327567 10390 0 3 0x4000080 kqsel syz-executor 78427 151388 10390 0 3 0x4000080 fsleep syz-executor 59727 335154 79783 0 3 0x82 nanoslp syz-executor 50465 86375 79783 0 3 0x82 nanoslp syz-executor 29863 381729 79783 0 3 0x82 nanoslp syz-executor 33802 422027 79783 0 3 0x82 nanoslp syz-executor 10390 210832 79783 0 3 0x82 nanoslp syz-executor 1017 364989 79783 0 3 0x82 nanoslp syz-executor 83418 486253 79783 0 2 0x2 syz-executor 91714 467186 79783 0 3 0x82 nanoslp syz-executor 79783 380397 84203 0 3 0x82 kqread syz-executor 84203 323206 56237 0 3 0x10008a sigsusp ksh 56237 383776 49967 0 3 0x98 kqread sshd-session 49967 256133 68424 0 3 0x92 kqread sshd-session 58752 302412 1 0 3 0x100083 ttyin getty 68424 87505 1 0 3 0x88 kqread sshd 61438 486743 11508 73 3 0x1100090 kqread syslogd 11508 155549 1 0 3 0x100082 sbwait syslogd 41849 523379 1 0 3 0x100080 kqread resolvd 77813 467252 14169 77 3 0x100092 kqread dhcpleased 17601 133327 14169 77 3 0x100092 kqread dhcpleased 14169 30751 1 0 3 0x80 kqread dhcpleased 91413 465469 0 0 3 0x14200 bored smr 35167 281763 0 0 2 0x14200 zerothread 17640 417822 0 0 3 0x14200 aiodoned aiodoned 15451 163541 0 0 3 0x14200 syncer update 43611 341163 0 0 3 0x14200 cleaner cleaner 77013 457537 0 0 3 0x14200 reaper reaper 24561 77951 0 0 3 0x14200 pgdaemon pagedaemon 29079 154476 0 0 3 0x14200 bored viomb 34611 89675 0 0 3 0x40014200 acpi0 acpi0 88746 415198 0 0 3 0x14200 bored softnet0 76661 274622 0 0 3 0x14200 smrbar systqmp 61514 206253 0 0 3 0x14200 bored systq 55831 493853 0 0 3 0x40014200 tmoslp softclock 63376 31081 0 0 3 0x40014200 idle0 1 241103 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 10167 11040K 11105K 166960K 11256 0 pcb 19 12K 12K 166960K 25 0 rtable 220 7K 7K 166960K 283 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 iov 0 0K 4K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1336 84K 84K 166960K 1354 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 3 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 17 61K 97K 166960K 147 0 proc 58 59K 116K 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 ip_moptions 1 0K 0K 166960K 3 0 in_multi 101 7K 7K 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 55 254K 254K 166960K 55 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 225 159K 166K 166960K 2798 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 96K 166960K 1179 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 27 2K 2K 166960K 27 0 temp 36 8634K 8698K 166960K 3721 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 40 0 35 1 0 1 1 0 8 0 rtentry 136 96 0 1 4 0 4 4 0 8 0 unpcb 144 44 0 27 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 8 0 4 1 0 1 1 0 8 0 arp 96 10 0 0 1 0 1 1 0 8 0 inpcb 328 68 0 57 2 0 2 2 0 8 1 nd6 112 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 9 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1558 0 55 95 0 95 95 0 8 0 ffsino 256 1558 0 55 95 0 95 95 0 8 0 nchpl 144 1756 0 78 63 0 63 63 0 8 0 uvmvnodes 80 1641 0 0 34 0 34 34 0 8 0 vnodes 216 1641 0 0 92 0 92 92 0 8 0 namei 1024 5202 0 5202 2 0 2 2 0 8 2 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6193 0 6193 8 0 8 8 1 8 8 plimitpl 152 30 0 13 1 0 1 1 0 8 0 sigapl 424 424 0 382 6 0 6 6 0 8 0 knotepl 120 3486 0 3438 2 0 2 2 0 8 0 kqueuepl 184 22 0 11 1 0 1 1 0 8 0 pipepl 304 99 0 72 3 0 3 3 0 8 0 fdescpl 448 411 0 382 5 0 5 5 0 8 1 filepl 120 1343 0 1125 7 0 7 7 0 8 0 lockfpl 104 8 0 4 1 0 1 1 0 8 0 lockfspl 48 5 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 90 0 79 1 0 1 1 0 8 0 zombiepl 144 382 0 382 1 0 1 1 0 8 1 processpl 1152 424 0 382 4 0 4 4 0 8 0 procpl 664 452 0 400 5 0 5 5 0 8 0 sockpl 552 152 0 119 3 0 3 3 0 8 0 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2470 0 2419 15 0 15 15 0 8 7 mcl2k 2048 227 0 224 9 0 9 9 0 8 8 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3921 0 3788 12 0 12 12 0 8 3 bufpl 280 2826 0 117 194 0 194 194 0 8 0 anonpl 24 95394 0 92343 22 0 22 22 0 187 2 amapchunkpl 152 8122 0 7647 19 0 19 19 0 158 0 amappl16 200 1744 0 1724 5 0 5 5 0 8 3 amappl15 192 9 0 9 1 0 1 1 0 8 1 amappl14 184 105 0 95 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 0 1 1 0 8 1 amappl12 168 1022 0 993 2 0 2 2 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 0 1 1 0 8 1 amappl9 144 250 0 250 1 0 1 1 0 8 1 amappl8 136 22 0 21 1 0 1 1 0 8 0 amappl7 128 99 0 89 1 0 1 1 0 8 0 amappl6 120 168 0 165 1 0 1 1 0 8 0 amappl5 112 117 0 110 1 0 1 1 0 8 0 amappl4 104 265 0 251 1 0 1 1 0 8 0 amappl3 96 1219 0 1127 3 0 3 3 0 8 0 amappl2 88 630 0 562 2 0 2 2 0 8 0 amappl1 80 8058 0 7510 13 0 13 13 0 8 0 amappl 88 2161 0 2001 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 24 411 0 382 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 411 0 382 1 0 1 1 0 8 0 vmmpekpl 168 4778 0 4756 2 0 2 2 0 8 0 vmmpepl 168 32626 0 30815 82 0 82 82 0 357 3 vmsppl 368 410 0 382 4 0 4 4 0 8 1 rwobjpl 40 13622 0 11147 26 0 26 26 0 8 0 pdppl 4096 829 0 764 97 14 83 83 0 8 18 pvpl 32 207758 0 199386 78 0 78 78 0 265 10 pmappl 216 410 0 382 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 374 0 14 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963060,0,ffff80003c962fd0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499a00,ffff80003c963108,ffff80003c963060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807dfdee00,ffff800001481c18) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001481c18,fffffd807dfdee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001481c18,0,ffff80003c9632b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c951248,4,ffff80003c9633b0,808,ffff80003c963450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c951248,ffff80003c963500,ffff80003c963450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e98d58a940, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd8070d1a4e0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963060,0,ffff80003c962fd0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001499a00,ffff80003c963108,ffff80003c963060,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd807dfdee00,ffff800001481c18) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800001481c18,fffffd807dfdee00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001481c18,0,ffff80003c9632b8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c951248,4,ffff80003c9633b0,808,ffff80003c963450) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c951248,ffff80003c963500,ffff80003c963450) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963500) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963500) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8e98d58a940, count: -10