uvm_fault(0xffffffff839d1d88, 0xffff80000160406a, 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 *422985 83095 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92d670,0,ffff80003c92d5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001602b00,ffff80003c92d718,ffff80003c92d670,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807ad80f00,ffff800010fe0460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe0460,fffffd807ad80f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0460,0,ffff80003c92d8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c1770,4,ffff80003c92d9c0,808,ffff80003c92da60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c1770,ffff80003c92db10,ffff80003c92da60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92db10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92db10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9baecd3d260, 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(0xffffffff839d1d88, 0xffff80000160406a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92d670,0,ffff80003c92d5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001602b00,ffff80003c92d718,ffff80003c92d670,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807ad80f00,ffff800010fe0460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe0460,fffffd807ad80f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0460,0,ffff80003c92d8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c1770,4,ffff80003c92d9c0,808,ffff80003c92da60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c1770,ffff80003c92db10,ffff80003c92da60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92db10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92db10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9baecd3d260, count: -10 ddb> show registers rdi 0xffff80002a8b4000 rsi 0x940 rbp 0xffff80003c92d4c0 rbx 0xde rdx 0xffff80002a8b4000 rcx 0xffff800001603f80 rax 0xfffffd807ad802e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xd2a29975c2177f25 r11 0xd3cdfb32c54401c5 r12 0x19 r13 0xfffffd807ad80200 r14 0xfffffd8063e8c9a8 r15 0xffff8000002a2058 rip 0xffffffff8194cbd4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c92d440 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=422985 pid=83095 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=0xffff80002a746008,0xffffffff839db048 process=0xffff8000338d5f98 user=0xffff80003c928000, vmspace=0xfffffd806cb318b0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 83095 191268 59803 0 2 0 syz-executor *83095 422985 59803 0 7 0x4000000 syz-executor 30074 509464 60494 0 2 0 syz-executor 30074 22259 60494 0 3 0x4000080 fsleep syz-executor 60459 114584 96315 0 2 0 syz-executor 60459 424020 96315 0 3 0x4000080 sbwait syz-executor 72661 373464 69233 0 2 0x4000000 syz-executor 72661 441208 69233 0 3 0x4000080 rest syz-executor 67714 322509 35693 0 3 0x80 nanoslp syz-executor 67714 317069 35693 0 3 0x4000080 lockf syz-executor 67714 461424 35693 0 3 0x4000080 fsleep syz-executor 67714 23684 35693 0 3 0x4000080 fsleep syz-executor 70992 112138 16934 0 2 0 syz-executor 70992 128781 16934 0 3 0x4000080 fsleep syz-executor 17747 70021 82233 0 2 0 syz-executor 17747 5615 82233 0 3 0x4000080 fsleep syz-executor 81834 524277 63144 0 2 0x2 syz-executor 35693 428768 63144 0 3 0x82 nanoslp syz-executor 96315 139329 63144 0 2 0xc82 syz-executor 69233 96952 63144 0 3 0x82 nanoslp syz-executor 60494 53826 63144 0 3 0x82 nanoslp syz-executor 82233 281979 63144 0 3 0x82 nanoslp syz-executor 16934 485128 63144 0 3 0x82 nanoslp syz-executor 59803 63175 63144 0 3 0x82 nanoslp syz-executor 63144 458739 25873 0 3 0x82 kqread syz-executor 25873 464244 19251 0 3 0x10008a sigsusp ksh 19251 239465 81010 0 3 0x98 kqread sshd-session 81010 72580 6458 0 3 0x92 kqread sshd-session 37965 60124 1 0 3 0x100083 ttyin getty 6458 312127 1 0 3 0x88 kqread sshd 61779 492591 59181 73 3 0x1100090 kqread syslogd 59181 274432 1 0 3 0x100082 sbwait syslogd 32065 64543 1 0 3 0x100080 kqread resolvd 77457 365599 80061 77 3 0x100092 kqread dhcpleased 58237 483797 80061 77 3 0x100092 kqread dhcpleased 80061 418194 1 0 3 0x80 kqread dhcpleased 79864 169502 0 0 3 0x14200 bored smr 36694 473720 0 0 2 0x14200 zerothread 44019 335285 0 0 3 0x14200 aiodoned aiodoned 12278 130455 0 0 3 0x14200 syncer update 58164 382698 0 0 3 0x14200 cleaner cleaner 99148 353832 0 0 3 0x14200 reaper reaper 61719 491517 0 0 3 0x14200 pgdaemon pagedaemon 25759 264705 0 0 3 0x14200 bored viomb 24094 6398 0 0 3 0x40014200 acpi0 acpi0 91328 257298 0 0 3 0x14200 bored softnet0 11882 498100 0 0 3 0x14200 smrbar systqmp 3460 121692 0 0 3 0x14200 bored systq 88835 291804 0 0 3 0x40014200 tmoslp softclock 86115 423745 0 0 3 0x40014200 idle0 1 310491 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 11033 12105K 12119K 166960K 12117 0 pcb 21 12K 12K 166960K 25 0 rtable 246 8K 8K 166960K 372 0 pf 32 13K 18K 166960K 37 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 52 2K 2K 166960K 52 0 sysctl 2 1K 9K 166960K 6 0 counters 34 17K 17K 166960K 34 0 ioctlops 0 0K 2K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1292 81K 81K 166960K 1363 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 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 147 0 proc 59 59K 83K 166960K 500 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 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 31 148K 148K 166960K 31 0 exec 0 0K 1K 166960K 361 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 150K 157K 166960K 2980 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 93K 166960K 1228 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 28 2K 2K 166960K 28 0 temp 35 9062K 9126K 166960K 4801 0 kqueue 14 22K 22K 166960K 24 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 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 36 0 18 1 0 1 1 0 8 0 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 9 0 5 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 65 0 53 1 0 1 1 0 8 0 nd6 112 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 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 112 0 8 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1576 0 116 92 0 92 92 0 8 0 ffsino 256 1576 0 116 92 0 92 92 0 8 0 nchpl 144 1785 0 87 64 0 64 64 0 8 0 vnodes 216 1663 0 0 93 0 93 93 0 8 0 namei 1024 5155 0 5155 1 0 1 1 0 8 1 kstatmem 264 25 0 0 2 0 2 2 0 8 0 scxspl 216 5879 0 5879 2 0 2 2 1 8 2 plimitpl 152 27 0 11 1 0 1 1 0 8 0 sigapl 424 437 0 395 6 0 6 6 0 8 0 knotepl 120 3065 0 3016 9 0 9 9 0 8 7 kqueuepl 184 22 0 11 1 0 1 1 0 8 0 pipepl 304 119 0 91 3 0 3 3 0 8 0 fdescpl 448 424 0 395 5 0 5 5 0 8 0 filepl 120 1432 0 1206 7 0 7 7 0 8 0 lockfpl 104 13 0 7 1 0 1 1 0 8 0 lockfspl 48 7 0 3 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 70 0 59 1 0 1 1 0 8 0 zombiepl 144 395 0 395 1 0 1 1 0 8 1 processpl 1152 437 0 395 4 0 4 4 0 8 0 procpl 664 459 0 408 5 0 5 5 0 8 0 sockpl 552 139 0 104 3 0 3 3 0 8 0 mcl64k 65536 3 0 2 1 0 1 1 0 8 0 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2490 0 2440 12 0 12 12 0 8 5 mcl2k 2048 107 0 107 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4127 0 3992 9 0 9 9 0 8 0 bufpl 280 2254 0 102 154 0 154 154 0 8 0 anonpl 24 93967 0 90863 22 0 22 22 0 187 2 amapchunkpl 152 8271 0 7812 19 0 19 19 0 158 0 amappl16 200 1645 0 1628 5 0 5 5 0 8 4 amappl15 192 18 0 18 1 0 1 1 0 8 1 amappl14 184 437 0 435 1 0 1 1 0 8 0 amappl13 176 112 0 102 1 0 1 1 0 8 0 amappl12 168 659 0 631 2 0 2 2 0 8 0 amappl11 160 7 0 6 1 0 1 1 0 8 0 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 288 0 288 1 0 1 1 0 8 1 amappl8 136 95 0 94 1 0 1 1 0 8 0 amappl7 128 137 0 126 1 0 1 1 0 8 0 amappl6 120 153 0 151 1 0 1 1 0 8 0 amappl5 112 86 0 79 1 0 1 1 0 8 0 amappl4 104 271 0 254 1 0 1 1 0 8 0 amappl3 96 1536 0 1429 3 0 3 3 0 8 0 amappl2 88 501 0 447 2 0 2 2 0 8 0 amappl1 80 9048 0 8498 13 0 13 13 0 8 0 amappl 88 2303 0 2151 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 0 8 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 24 424 0 395 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 424 0 395 1 0 1 1 0 8 0 vmmpekpl 168 5138 0 5108 2 0 2 2 0 8 0 vmmpepl 168 35250 0 33499 79 0 79 79 0 357 0 vmsppl 368 423 0 395 4 0 4 4 0 8 1 rwobjpl 40 13184 0 12257 10 0 10 10 0 8 0 pdppl 4096 854 0 790 92 14 78 78 0 8 14 pvpl 32 212314 0 203571 72 0 72 72 0 265 0 pmappl 216 423 0 395 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 350 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92d670,0,ffff80003c92d5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001602b00,ffff80003c92d718,ffff80003c92d670,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807ad80f00,ffff800010fe0460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe0460,fffffd807ad80f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0460,0,ffff80003c92d8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c1770,4,ffff80003c92d9c0,808,ffff80003c92da60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c1770,ffff80003c92db10,ffff80003c92da60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92db10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92db10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9baecd3d260, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8063e8c9a8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92d670,0,ffff80003c92d5e0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001602b00,ffff80003c92d718,ffff80003c92d670,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd807ad80f00,ffff800010fe0460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe0460,fffffd807ad80f00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe0460,0,ffff80003c92d8c8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002f0c1770,4,ffff80003c92d9c0,808,ffff80003c92da60) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002f0c1770,ffff80003c92db10,ffff80003c92da60) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92db10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92db10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9baecd3d260, count: -10