uvm_fault(0xffffffff83a271a8, 0xffff80000161604a, 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 *429370 27531 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906bf0,0,ffff80003c906b60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001612a00,ffff80003c906c98,ffff80003c906bf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff0807b97ea00,ffff800010fe1c18) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1c18,fffff0807b97ea00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1c18,0,ffff80003c906e48,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fba10,3,ffff80003c906f40,80c,ffff80003c906fe0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fba10,ffff80003c907090,ffff80003c906fe0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c907090) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c907090) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x86bbf0351a0, 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(0xffffffff83a271a8, 0xffff80000161604a, 0, 1) -> e ddb> show kasan No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906bf0,0,ffff80003c906b60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001612a00,ffff80003c906c98,ffff80003c906bf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff0807b97ea00,ffff800010fe1c18) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1c18,fffff0807b97ea00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1c18,0,ffff80003c906e48,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fba10,3,ffff80003c906f40,80c,ffff80003c906fe0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fba10,ffff80003c907090,ffff80003c906fe0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c907090) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c907090) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x86bbf0351a0, count: -10 ddb> show registers rdi 0xffff80002a8a6000 rsi 0x960 rbp 0xffff80003c906a40 rbx 0xde rdx 0xffff80002a8a6000 rcx 0xffff800001615f60 rax 0xfffff0807b97e2e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x355054222f14b224 r11 0x3757ffeac0e0626d r12 0x18 r13 0xfffff0807b97e200 r14 0xfffff0807a51b3d0 r15 0xffff8000002a3058 rip 0xffffffff8291a6a4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9069c0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=429370 pid=27531 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=0xffff80003c8fb4e0,0xffff80003c8fa7f8 process=0xffff800045ff9698 user=0xffff80003c902000, vmspace=0xfffff0806d1b2180 estcpu=1, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 49477 108124 46062 0 2 0 0 syz-executor 27531 470820 59608 0 2 0 0 syz-executor *27531 429370 59608 0 7 0 0x4000000 syz-executor 93256 393784 38524 0 2 0 0 syz-executor 93256 315259 38524 0 3 0 0x4000080 fsleep syz-executor 41330 203769 58845 0 3 0 0x80 nanoslp syz-executor 41330 169649 58845 0 3 0 0x4000080 ttyretype syz-executor 78449 234742 175 0 2 0 0 syz-executor 78449 463754 175 0 3 0 0x4000080 fsleep syz-executor 78449 104147 175 0 3 0 0x4000080 fsleep syz-executor 45078 2121 46320 0 2 0 0 syz-executor 45078 427590 46320 0 3 0 0x4000080 kqread syz-executor 45078 208060 46320 0 2 0 0x4000000 syz-executor 14547 469780 14520 0 2 0x100002 0 sh 4024 504810 7660 0 3 0 0x80 nanoslp syz-executor 4024 392418 7660 0 3 0 0x4000088 kqpoll syz-executor 4024 244839 7660 0 2 0 0x4000000 syz-executor 14520 11648 98645 0 3 0x2 0x80 wait syz-executor 38524 410218 98645 0 3 0x2 0x80 nanoslp syz-executor 46062 511997 98645 0 3 0x2 0x80 nanoslp syz-executor 46320 508603 98645 0 3 0x2 0x80 nanoslp syz-executor 58845 309419 98645 0 3 0x2 0x80 nanoslp syz-executor 175 153511 98645 0 3 0x2 0x80 nanoslp syz-executor 7660 513480 98645 0 3 0x2 0x80 nanoslp syz-executor 59608 166832 98645 0 3 0x2 0x80 nanoslp syz-executor 98645 259214 59481 0 2 0x2 0 syz-executor 59481 501320 6199 0 3 0x100002 0x88 sigsusp ksh 6199 167025 16743 0 3 0x10 0x88 kqread sshd-session 16743 196318 95296 0 3 0x12 0x80 kqread sshd-session 63936 449307 1 0 3 0x100003 0x80 ttyin getty 95296 480103 1 0 3 0 0x88 kqread sshd 28597 5395 52613 73 3 0x1100010 0x80 kqread syslogd 52613 224615 1 0 3 0x100002 0x80 sbwait syslogd 76707 388212 1 0 3 0x100000 0x80 kqread resolvd 27060 21882 87781 77 3 0x100012 0x80 kqread dhcpleased 45003 409999 87781 77 3 0x100012 0x80 kqread dhcpleased 87781 338868 1 0 3 0 0x80 kqread dhcpleased 50625 357593 0 0 3 0x14000 0x200 bored smr 36484 25540 0 0 2 0x14000 0x200 zerothread 65465 419474 0 0 3 0x14000 0x200 aiodoned aiodoned 7508 213079 0 0 3 0x14000 0x200 syncer update 3093 198151 0 0 3 0x14000 0x200 cleaner cleaner 18519 274123 0 0 3 0x14000 0x200 reaper reaper 6720 395100 0 0 3 0x14000 0x200 pgdaemon pagedaemon 82167 107485 0 0 3 0x14000 0x200 bored viomb 91588 125720 0 0 3 0x14000 0x40000200 acpi0 acpi0 32126 253870 0 0 2 0x14000 0x200 softnet0 26211 24787 0 0 3 0x14000 0x200 bored systqmp 61519 25783 0 0 3 0x14000 0x200 bored systq 78341 368715 0 0 3 0x14000 0x40000200 tmoslp softclock 19758 109407 0 0 3 0x14000 0x40000200 idle0 1 340250 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11031 12110K 12231K 166960K 12146 0 pcb 17 12K 12K 166960K 24 0 rtable 232 7K 7K 166960K 352 0 pf 30 12K 16K 166960K 33 0 ifaddr 40 7K 7K 166960K 42 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 33 0 ioctlops 0 0K 4K 166960K 33 0 iov 1 0K 0K 166960K 2 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1295 81K 82K 166960K 1379 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 18 65K 97K 166960K 159 0 proc 58 59K 108K 166960K 493 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 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 364 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 210 151K 159K 166960K 3073 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 39 78K 96K 166960K 1252 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 25 1K 1K 166960K 25 0 temp 34 9106K 9114K 166960K 3610 0 kqueue 14 20K 23K 166960K 35 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 33 1 0 1 1 0 8 0 rtentry 136 105 0 1 4 0 4 4 0 8 0 unpcb 144 48 0 33 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 19 0 15 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 86 0 75 2 0 2 2 0 8 1 nd6 112 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 256 412 0 0 26 0 26 26 0 8 0 art_table 40 414 0 0 5 0 5 5 0 8 0 art_node 32 105 0 10 1 0 1 1 0 8 0 semapl 72 1 0 0 1 0 1 1 0 8 0 shmpl 112 2 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1606 0 146 92 0 92 92 0 8 0 ffsino 256 1606 0 146 92 0 92 92 0 8 0 nchpl 144 1828 0 135 63 0 63 63 0 8 0 vnodes 216 1700 0 0 95 0 95 95 0 8 0 namei 1024 5442 0 5442 2 0 2 2 0 8 2 kstatmem 264 23 0 0 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6080 0 6080 2 0 2 2 1 8 2 plimitpl 152 32 0 15 1 0 1 1 0 8 0 sigapl 424 454 0 411 6 0 6 6 0 8 1 knotepl 120 3161 0 3113 8 0 8 8 0 8 6 kqueuepl 184 30 0 19 1 0 1 1 0 8 0 pipepl 304 125 0 97 3 0 3 3 0 8 0 fdescpl 448 441 0 411 5 0 5 5 0 8 1 filepl 120 1590 0 1372 7 0 7 7 0 8 0 lockfpl 104 14 0 12 1 0 1 1 0 8 0 lockfspl 48 8 0 6 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 100 0 89 1 0 1 1 0 8 0 zombiepl 144 411 0 411 1 0 1 1 0 8 1 processpl 1152 454 0 411 4 0 4 4 0 8 0 procpl 664 499 0 447 5 0 5 5 0 8 0 sockpl 552 174 0 144 3 0 3 3 0 8 0 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2509 0 2453 13 0 13 13 0 8 5 mcl2k 2048 126 0 126 1 0 1 1 0 8 1 mextrefs 64 44 0 44 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4306 0 4182 9 0 9 9 0 8 0 bufpl 272 2250 0 102 144 0 144 144 0 8 0 anonpl 24 99684 0 96650 31 0 31 31 0 187 8 amapchunkpl 152 8831 0 8383 22 0 22 22 0 158 4 amappl16 200 1790 0 1773 5 0 5 5 0 8 3 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 407 0 405 1 0 1 1 0 8 0 amappl13 176 115 0 105 1 0 1 1 0 8 0 amappl12 168 709 0 681 2 0 2 2 0 8 0 amappl11 160 7 0 7 1 0 1 1 0 8 1 amappl10 152 62 0 51 1 0 1 1 0 8 0 amappl9 144 269 0 269 1 0 1 1 0 8 1 amappl8 136 108 0 107 1 0 1 1 0 8 0 amappl7 128 138 0 126 1 0 1 1 0 8 0 amappl6 120 144 0 142 1 0 1 1 0 8 0 amappl5 112 89 0 82 1 0 1 1 0 8 0 amappl4 104 275 0 260 1 0 1 1 0 8 0 amappl3 96 1513 0 1426 3 0 3 3 0 8 0 amappl2 88 571 0 503 2 0 2 2 0 8 0 amappl1 80 10062 0 9511 13 0 13 13 0 8 0 amappl 88 2389 0 2242 4 0 4 4 0 92 0 uvmvnodes 80 96 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 128 254 0 254 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 0 1 0 1 1 0 8 0 uaddrrnd 24 441 0 411 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 441 0 411 1 0 1 1 0 8 0 vmmpekpl 168 5484 0 5445 2 0 2 2 0 8 0 vmmpepl 168 37768 0 36012 78 0 78 78 0 357 1 vmsppl 368 440 0 411 4 0 4 4 0 8 1 rwobjpl 40 14228 0 13304 11 0 11 11 0 8 0 pdppl 4096 888 0 822 96 14 82 82 0 8 16 pvpl 32 224946 0 216699 94 0 94 94 0 265 24 pmappl 216 440 0 411 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 496 0 14 14 0 14 14 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906bf0,0,ffff80003c906b60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001612a00,ffff80003c906c98,ffff80003c906bf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff0807b97ea00,ffff800010fe1c18) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1c18,fffff0807b97ea00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1c18,0,ffff80003c906e48,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fba10,3,ffff80003c906f40,80c,ffff80003c906fe0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fba10,ffff80003c907090,ffff80003c906fe0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c907090) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c907090) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x86bbf0351a0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff0807a51b3d0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c906bf0,0,ffff80003c906b60,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001612a00,ffff80003c906c98,ffff80003c906bf0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff0807b97ea00,ffff800010fe1c18) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1c18,fffff0807b97ea00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1c18,0,ffff80003c906e48,0,0,80c) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8fba10,3,ffff80003c906f40,80c,ffff80003c906fe0) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8fba10,ffff80003c907090,ffff80003c906fe0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c907090) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c907090) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x86bbf0351a0, count: -10