uvm_fault(0xffffffff83a1e8b0, 0xffff80000160f06a, 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 *163324 32369 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92ed70,0,ffff80003c92ece0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5c400,ffff80003c92ee18,ffff80003c92ed70,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8069d3a000,ffff8000015f4f28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015f4f28,fffffd8069d3a000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f4f28,0,ffff80003c92efc8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338c1ca0,4,ffff80003c92f0c0,808,ffff80003c92f160) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338c1ca0,ffff80003c92f210,ffff80003c92f160) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92f210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92f210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4eb0533c10, 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(0xffffffff83a1e8b0, 0xffff80000160f06a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92ed70,0,ffff80003c92ece0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5c400,ffff80003c92ee18,ffff80003c92ed70,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8069d3a000,ffff8000015f4f28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015f4f28,fffffd8069d3a000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f4f28,0,ffff80003c92efc8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338c1ca0,4,ffff80003c92f0c0,808,ffff80003c92f160) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338c1ca0,ffff80003c92f210,ffff80003c92f160) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92f210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92f210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4eb0533c10, count: -10 ddb> show registers rdi 0xffff8000314ba000 rsi 0x958 rbp 0xffff80003c92ebc0 rbx 0xde rdx 0xffff8000314ba000 rcx 0xffff80000160ef80 rax 0xfffffd8069d3a8e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x513c73201a8baa78 r11 0xde874911bad870ae r12 0x1a r13 0xfffffd8069d3a800 r14 0xfffffd8070629238 r15 0xffff8000002a2058 rip 0xffffffff81d98a74 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c92eb40 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=163324 pid=32369 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=51, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000338c1770,0xffffffff839c3610 process=0xffff8000340d2418 user=0xffff80003c92a000, vmspace=0xfffffd806ca70b98 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 32369 143734 42165 0 2 0 syz-executor *32369 163324 42165 0 7 0x4000000 syz-executor 94473 248252 55213 0 2 0x2 arp 59800 143154 46156 0 2 0 syz-executor 59800 365378 46156 0 3 0x4000080 fsleep syz-executor 79891 63568 54281 0 2 0 syz-executor 79891 279219 54281 0 2 0x4000000 syz-executor 69497 262077 92634 0 3 0x80 nanoslp syz-executor 69497 308386 92634 0 2 0x4000000 syz-executor 69497 318322 92634 0 3 0x4000080 fsleep syz-executor 69497 208887 92634 0 3 0x4000080 fsleep syz-executor 84547 76237 42468 0 2 0x10 syz-executor 84547 318760 42468 0 3 0x4000090 kqsel syz-executor 78542 484754 10686 0 2 0 syz-executor 78542 192926 10686 0 3 0x4000080 fsleep syz-executor 48438 44638 31794 0 2 0 syz-executor 48438 461067 31794 0 2 0x4000000 syz-executor 55213 505085 65222 0 3 0x10008a sigsusp sh 46156 372148 43204 0 2 0xc82 syz-executor 42468 62897 43204 0 2 0xc82 syz-executor 65222 105171 43204 0 3 0x82 wait syz-executor 54281 487099 43204 0 2 0xc82 syz-executor 42165 202949 43204 0 2 0xc82 syz-executor 31794 331862 43204 0 2 0xc82 syz-executor 10686 168504 43204 0 2 0xc82 syz-executor 92634 141543 43204 0 2 0xc82 syz-executor 43204 37094 44083 0 3 0x82 kqread syz-executor 44083 1569 33913 0 3 0x10008a sigsusp ksh 33913 348133 84850 0 3 0x98 kqread sshd-session 84850 296517 99532 0 3 0x92 kqread sshd-session 46848 268217 1 0 3 0x100083 ttyin getty 99532 508082 1 0 3 0x88 kqread sshd 78083 40249 20299 73 3 0x1100090 kqread syslogd 20299 188655 1 0 3 0x100082 sbwait syslogd 84440 100373 1 0 3 0x100080 kqread resolvd 12411 512861 52979 77 3 0x100092 kqread dhcpleased 95970 247253 52979 77 3 0x100092 kqread dhcpleased 52979 395687 1 0 3 0x80 kqread dhcpleased 96967 369408 0 0 3 0x14200 bored smr 932 450017 0 0 2 0x14200 zerothread 46305 86336 0 0 3 0x14200 aiodoned aiodoned 21571 367564 0 0 3 0x14200 syncer update 80356 133388 0 0 3 0x14200 cleaner cleaner 27240 178437 0 0 3 0x14200 reaper reaper 36798 96800 0 0 3 0x14200 pgdaemon pagedaemon 32729 137627 0 0 3 0x14200 bored viomb 70378 508307 0 0 3 0x40014200 acpi0 acpi0 90586 328962 0 0 3 0x14200 bored softnet0 58186 56585 0 0 3 0x14200 smrbar systqmp 48356 24674 0 0 3 0x14200 bored systq 55809 310145 0 0 3 0x40014200 tmoslp softclock 78800 89579 0 0 3 0x40014200 idle0 1 318642 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 11031 12103K 12119K 166960K 12119 0 pcb 17 12K 12K 166960K 17 0 rtable 224 8K 8K 166960K 352 0 pf 30 12K 12K 166960K 32 0 ifaddr 39 6K 6K 166960K 43 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 36 0 ioctlops 0 0K 2K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1291 81K 81K 166960K 1358 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 85K 166960K 134 0 proc 57 58K 83K 166960K 488 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 85 6K 6K 166960K 90 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 43 201K 201K 166960K 43 0 exec 0 0K 1K 166960K 360 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 223 151K 156K 166960K 2907 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 41 82K 90K 166960K 1216 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 14 0K 1K 166960K 26 0 temp 34 9062K 9126K 166960K 3885 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 37 0 32 1 0 1 1 0 8 0 rtentry 136 104 0 6 4 0 4 4 0 8 0 unpcb 144 36 0 20 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 7 0 3 1 0 1 1 0 8 0 arp 96 17 0 0 1 0 1 1 0 8 0 inpcb 328 58 0 51 1 0 1 1 0 8 0 nd6 112 21 0 2 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 412 0 0 26 0 26 26 0 8 0 art_table 40 414 0 0 5 0 5 5 0 8 0 art_node 32 104 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1559 0 97 92 0 92 92 0 8 0 ffsino 256 1559 0 97 92 0 92 92 0 8 0 nchpl 144 1753 0 57 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 1642 0 0 92 0 92 92 0 8 0 namei 1024 5077 0 5077 2 0 2 2 0 8 2 kstatmem 264 25 0 2 2 0 2 2 0 8 0 scxspl 216 5856 0 5856 3 0 3 3 1 8 3 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 427 0 383 6 0 6 6 0 8 0 knotepl 120 2910 0 2863 9 0 9 9 0 8 7 kqueuepl 184 21 0 10 1 0 1 1 0 8 0 pipepl 304 119 0 92 3 0 3 3 0 8 0 fdescpl 448 414 0 383 4 0 4 4 0 8 0 filepl 120 1401 0 1190 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 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 76 0 64 1 0 1 1 0 8 0 zombiepl 144 383 0 383 1 0 1 1 0 8 1 processpl 1152 427 0 383 4 0 4 4 0 8 0 procpl 664 437 0 384 5 0 5 5 0 8 0 sockpl 552 132 0 104 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 2475 0 2422 14 0 14 14 0 8 5 mcl2k 2048 118 0 105 2 0 2 2 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4087 0 3903 12 0 12 12 0 8 0 bufpl 280 2225 0 102 152 0 152 152 0 8 0 anonpl 24 94556 0 91429 22 0 22 22 0 187 3 amapchunkpl 152 8049 0 7572 19 0 19 19 0 158 0 amappl16 200 1692 0 1678 5 0 5 5 0 8 4 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 410 0 407 1 0 1 1 0 8 0 amappl13 176 106 0 96 1 0 1 1 0 8 0 amappl12 168 646 0 617 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 61 0 51 1 0 1 1 0 8 0 amappl9 144 295 0 295 1 0 1 1 0 8 1 amappl8 136 116 0 115 1 0 1 1 0 8 0 amappl7 128 145 0 133 1 0 1 1 0 8 0 amappl6 120 218 0 215 1 0 1 1 0 8 0 amappl5 112 102 0 94 1 0 1 1 0 8 0 amappl4 104 266 0 251 1 0 1 1 0 8 0 amappl3 96 1370 0 1257 3 0 3 3 0 8 0 amappl2 88 506 0 453 2 0 2 2 0 8 0 amappl1 80 8913 0 8337 13 0 13 13 0 8 0 amappl 88 2234 0 2074 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 24 414 0 383 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 414 0 383 1 0 1 1 0 8 0 vmmpekpl 168 5045 0 5017 2 0 2 2 0 8 0 vmmpepl 168 34935 0 33130 79 0 79 79 0 357 0 vmsppl 368 413 0 383 4 0 4 4 0 8 1 rwobjpl 40 13055 0 12094 10 0 10 10 0 8 0 pdppl 4096 834 0 766 90 20 70 76 0 8 2 pvpl 32 210589 0 201867 71 0 71 71 0 265 0 pmappl 216 413 0 383 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 350 0 20 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92ed70,0,ffff80003c92ece0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5c400,ffff80003c92ee18,ffff80003c92ed70,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8069d3a000,ffff8000015f4f28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015f4f28,fffffd8069d3a000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f4f28,0,ffff80003c92efc8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338c1ca0,4,ffff80003c92f0c0,808,ffff80003c92f160) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338c1ca0,ffff80003c92f210,ffff80003c92f160) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92f210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92f210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4eb0533c10, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd8070629238) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c92ed70,0,ffff80003c92ece0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800000c5c400,ffff80003c92ee18,ffff80003c92ed70,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8069d3a000,ffff8000015f4f28) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff8000015f4f28,fffffd8069d3a000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000015f4f28,0,ffff80003c92efc8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff8000338c1ca0,4,ffff80003c92f0c0,808,ffff80003c92f160) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff8000338c1ca0,ffff80003c92f210,ffff80003c92f160) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c92f210) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c92f210) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc4eb0533c10, count: -10