uvm_fault(0xffffffff83a57a48, 0xffff8000016110aa, 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 *343864 93311 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314a6d40,0,ffff8000314a6cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5cf00,ffff8000314a6de8,ffff8000314a6d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(ffffef806ca21700,ffff800010fd48d0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fd48d0,ffffef806ca21700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd48d0,0,ffff8000314a6f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8eb778,3,ffff8000314a7090,808,ffff8000314a7130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8eb778,ffff8000314a71e0,ffff8000314a7130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314a71e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a71e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8d7bdc18ef0, 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(0xffffffff83a57a48, 0xffff8000016110aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314a6d40,0,ffff8000314a6cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5cf00,ffff8000314a6de8,ffff8000314a6d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(ffffef806ca21700,ffff800010fd48d0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fd48d0,ffffef806ca21700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd48d0,0,ffff8000314a6f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8eb778,3,ffff8000314a7090,808,ffff8000314a7130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8eb778,ffff8000314a71e0,ffff8000314a7130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314a71e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a71e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8d7bdc18ef0, count: -10 ddb> show registers rdi 0xffff800035cb4000 rsi 0x979 rbp 0xffff8000314a6b90 rbx 0xde rdx 0xffff800035cb4000 rcx 0xffff800001610fc0 rax 0xffffef806c8547e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x3ec60cab8e5c819f r11 0xc2f6bffa29023844 r12 0x1b r13 0xffffef806c854700 r14 0xffffef8069ec1810 r15 0xffff8000002a2058 rip 0xffffffff82bd6fa4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000314a6b10 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=343864 pid=93311 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=71, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c8ea7e8,0xffffffff839b4810 process=0xffff807fffff9698 user=0xffff8000314a2000, vmspace=0xffffef806602c8b8 estcpu=21, cpticks=1, pctcpu=0.1, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 93311 21822 2789 0 2 0 syz-executor *93311 343864 2789 0 7 0x4000000 syz-executor 21889 476851 55111 0 2 0xc80 syz-executor 21889 71819 55111 0 3 0x4000080 semwait syz-executor 21889 206 55111 0 3 0x4000080 fsleep syz-executor 12238 146934 7072 0 2 0 syz-executor 12238 630 7072 0 3 0x4000080 nanoslp syz-executor 12238 279617 7072 0 3 0x4000080 kqpoll syz-executor 55068 123598 35937 0 3 0x80 nanoslp syz-executor 55068 276964 35937 0 3 0x4000080 kqsel syz-executor 55068 130142 35937 0 3 0x4000080 fsleep syz-executor 44038 267889 42083 0 3 0x80 nanoslp syz-executor 44038 9054 42083 0 3 0x4000088 kqpoll syz-executor 44038 158543 42083 0 3 0x4000080 fsleep syz-executor 53792 405527 30437 0 2 0xc80 syz-executor 53792 6925 30437 0 3 0x4000080 rest syz-executor 53792 412171 30437 0 3 0x4000080 fsleep syz-executor 28325 26970 1 0 3 0x82 nanoslp getty 56796 419713 10944 0 2 0x10000c82 syz-executor 42083 493506 10944 0 2 0xc82 syz-executor 2789 427039 10944 0 3 0x82 nanoslp syz-executor 7072 397905 10944 0 3 0x82 nanoslp syz-executor 55111 502914 10944 0 3 0x82 nanoslp syz-executor 35937 454333 10944 0 2 0xc82 syz-executor 4217 485927 10944 0 2 0x2 syz-executor 30437 389335 10944 0 2 0xc82 syz-executor 10944 179420 1 0 3 0x82 kqread syz-executor 52686 240174 48313 0 3 0x98 kqread sshd-session 48313 286309 1 0 3 0x92 kqread sshd-session 75890 35158 1 73 3 0x1100090 kqread syslogd 67456 369021 0 0 3 0x14200 bored smr 77175 295530 0 0 2 0x14200 zerothread 22293 425002 0 0 3 0x14200 aiodoned aiodoned 3118 240438 0 0 3 0x14200 syncer update 26544 250752 0 0 3 0x14200 cleaner cleaner 31456 455421 0 0 3 0x14200 reaper reaper 6421 459004 0 0 3 0x14200 pgdaemon pagedaemon 45268 41800 0 0 3 0x14200 bored viomb 13423 126883 0 0 3 0x40014200 acpi0 acpi0 72489 453847 0 0 2 0x14200 softnet0 25349 372186 0 0 3 0x14200 bored systqmp 72866 9774 0 0 3 0x14200 bored systq 35945 202968 0 0 3 0x40014200 tmoslp softclock 45403 148931 0 0 3 0x40014200 idle0 1 158517 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 11024 12166K 12425K 166960K 12198 0 pcb 18 13K 14K 166960K 83 0 rtable 222 7K 7K 166960K 378 0 pf 31 13K 15K 166960K 39 0 ifaddr 42 7K 7K 166960K 48 0 ifgroup 50 2K 2K 166960K 54 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 35 0 ioctlops 0 0K 4K 166960K 84 0 iov 0 0K 12K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1293 81K 82K 166960K 1430 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 12 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 227 0 proc 20 25K 108K 166960K 521 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 7 0 in_multi 101 7K 7K 166960K 107 0 ether_multi 2 0K 0K 166960K 2 0 mrt 3 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 371 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 163 100K 167K 166960K 3787 0 UVM aobj 4 2K 2K 166960K 5 0 pinsyscall 24 48K 94K 166960K 1331 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 11 0K 2K 166960K 29 0 temp 39 9110K 9178K 166960K 7088 0 kqueue 6 10K 22K 166960K 44 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 39 1 0 1 1 0 8 0 rtentry 136 115 0 16 4 0 4 4 0 8 0 unpcb 144 233 0 226 6 0 6 6 0 8 5 syncache 336 4 0 4 1 0 1 1 0 8 1 tcpcb 736 98 0 96 7 0 7 7 0 8 6 arp 96 18 0 2 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 233 0 229 10 1 9 10 0 8 8 nd6 112 25 0 0 1 0 1 1 0 8 0 pkpcb 40 3 0 2 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 2 0 2 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfstkey 128 2 0 2 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1360 1 0 1 1 0 1 1 0 8 1 rttmr 136 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 256 486 0 45 31 0 31 31 0 8 1 art_table 40 488 0 45 5 0 5 5 0 8 0 art_node 32 115 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 5 1 0 1 1 0 8 1 semupl 112 1 0 0 1 0 1 1 0 8 0 semapl 72 9 0 4 1 0 1 1 0 8 0 shmpl 112 2 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 1753 0 292 93 0 93 93 0 8 0 ffsino 256 1753 0 292 93 0 93 93 0 8 0 nchpl 144 2066 0 375 63 0 63 63 0 8 0 vnodes 216 1874 0 0 105 0 105 105 0 8 0 namei 1024 6377 0 6376 2 0 2 2 0 8 1 kstatmem 264 27 0 4 2 0 2 2 0 8 0 scxspl 216 8886 0 8886 8 0 8 8 1 8 8 plimitpl 152 40 0 26 1 0 1 1 0 8 0 sigapl 424 523 0 488 6 0 6 6 0 8 1 knotepl 120 6797 0 6732 9 0 9 9 0 8 7 kqueuepl 184 51 0 41 1 0 1 1 0 8 0 pipepl 304 123 0 96 3 0 3 3 0 8 0 fdescpl 448 510 0 489 5 0 5 5 0 8 1 filepl 120 2158 0 1969 10 0 10 10 0 8 3 lockfpl 104 38 0 37 1 0 1 1 0 8 0 lockfspl 48 19 0 18 1 0 1 1 0 8 0 sessionpl 144 28 0 24 1 0 1 1 0 8 0 pgrppl 48 36 0 24 1 0 1 1 0 8 0 ucredpl 104 153 0 146 1 0 1 1 0 8 0 zombiepl 144 489 0 488 1 0 1 1 0 8 0 processpl 1152 523 0 488 4 0 4 4 0 8 0 procpl 664 668 0 622 5 0 5 5 0 8 0 sockpl 552 512 0 499 11 0 11 11 0 8 9 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 2613 0 2559 15 0 15 15 0 8 7 mcl2k 2048 236 0 233 1 0 1 1 0 8 0 mtagpl 96 5 0 5 1 0 1 1 0 8 1 mbufpl 256 5067 0 4909 10 0 10 10 0 8 0 bufpl 272 4471 0 102 292 0 292 292 0 8 0 anonpl 24 103719 0 97395 45 0 45 45 0 88 4 amapchunkpl 152 11159 0 10750 29 0 29 29 0 158 10 amappl16 200 1728 0 1470 15 0 15 15 0 8 0 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 413 0 413 1 0 1 1 0 8 1 amappl13 176 116 0 111 1 0 1 1 0 8 0 amappl12 168 747 0 727 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 0 1 1 0 8 1 amappl10 152 59 0 57 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 0 1 1 0 8 1 amappl8 136 92 0 92 1 0 1 1 0 8 1 amappl7 128 141 0 135 1 0 1 1 0 8 0 amappl6 120 164 0 163 1 0 1 1 0 8 0 amappl5 112 96 0 91 1 0 1 1 0 8 0 amappl4 104 260 0 253 1 0 1 1 0 8 0 amappl3 96 2011 0 1928 3 0 3 3 0 8 0 amappl2 88 531 0 507 2 0 2 2 0 8 0 amappl1 80 10477 0 10169 13 0 13 13 0 8 2 amappl 88 3042 0 2907 4 0 4 4 0 92 0 uvmvnodes 80 100 0 0 3 0 3 3 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 4 0 1 1 0 1 1 0 8 0 uaddrrnd 24 510 0 489 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 510 0 489 1 0 1 1 0 8 0 vmmpekpl 168 5970 0 5938 2 0 2 2 0 8 0 vmmpepl 168 41422 0 40006 80 0 80 80 0 357 13 vmsppl 368 509 0 489 4 0 4 4 0 8 1 rwobjpl 40 14961 0 14129 11 0 11 11 0 8 0 pdppl 4096 1026 0 978 94 36 58 80 0 8 10 pvpl 32 248476 0 237232 101 0 101 101 0 265 1 pmappl 216 509 0 489 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 659 0 36 18 0 18 18 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314a6d40,0,ffff8000314a6cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5cf00,ffff8000314a6de8,ffff8000314a6d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(ffffef806ca21700,ffff800010fd48d0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fd48d0,ffffef806ca21700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd48d0,0,ffff8000314a6f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8eb778,3,ffff8000314a7090,808,ffff8000314a7130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8eb778,ffff8000314a71e0,ffff8000314a7130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314a71e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a71e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8d7bdc18ef0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,ffffef8069ec1810) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000314a6d40,0,ffff8000314a6cb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5cf00,ffff8000314a6de8,ffff8000314a6d40,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(ffffef806ca21700,ffff800010fd48d0) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fd48d0,ffffef806ca21700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd48d0,0,ffff8000314a6f98,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8eb778,3,ffff8000314a7090,808,ffff8000314a7130) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8eb778,ffff8000314a71e0,ffff8000314a7130) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000314a71e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000314a71e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8d7bdc18ef0, count: -10