uvm_fault(0xffffffff83874dc8, 0xffff80000148f00a, 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 *279171 1162 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a930c80,0,ffff80003a930bf0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148d300,ffff80003a930d28,ffff80003a930c80,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8078459900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8078459900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003a930ed8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94aa80,4,ffff80003a930fd0,808,ffff80003a931070) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94aa80,ffff80003a931120,ffff80003a931070) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a931120) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a931120) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x54724bab0d0, 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(0xffffffff83874dc8, 0xffff80000148f00a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a930c80,0,ffff80003a930bf0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148d300,ffff80003a930d28,ffff80003a930c80,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8078459900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8078459900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003a930ed8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94aa80,4,ffff80003a930fd0,808,ffff80003a931070) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94aa80,ffff80003a931120,ffff80003a931070) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a931120) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a931120) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x54724bab0d0, count: -10 ddb> show registers rdi 0xffff800038126000 rsi 0xb78 rbp 0xffff80003a930ad0 rbx 0xde rdx 0xffff800038126000 rcx 0xffff80000148ef20 rax 0xfffffd8078459de0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xf39f989939bc1839 r11 0x6db7438d6880e254 r12 0x1d r13 0xfffffd8078459d00 r14 0xfffffd806a739568 r15 0xffff800000039058 rip 0xffffffff82fb0ec4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a930a50 ss 0 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=279171 pid=1162 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c94a020,0xffff80002a786d10 process=0xffff80002a796408 user=0xffff80003a92c000, vmspace=0xfffffd806c23fb90 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 25596 456260 46520 0 2 0 syz-executor 48509 361351 65848 0 2 0 syz-executor 48509 130833 65848 0 3 0x4000080 fsleep syz-executor 48509 350289 65848 0 2 0x4000000 syz-executor 49437 445657 88014 0 2 0 syz-executor 49437 268748 88014 0 3 0x4000080 fsleep syz-executor 49437 330948 88014 0 3 0x4000080 fsleep syz-executor 1162 280180 30907 0 3 0x80 nanoslp syz-executor * 1162 279171 30907 0 7 0x4000000 syz-executor 1162 109942 30907 0 3 0x4000080 fsleep syz-executor 1162 422413 30907 0 3 0x4000080 fsleep syz-executor 97362 466469 2920 0 3 0x80 nanoslp syz-executor 97362 310638 2920 0 2 0x4000000 syz-executor 97362 337884 2920 0 3 0x4000080 fsleep syz-executor 76416 512302 29369 0 2 0x82000 syz-executor 76416 406869 29369 0 3 0x4002000 suspend syz-executor 76416 358420 29369 0 2 0x4082000 syz-executor 44238 354889 25661 0 2 0 syz-executor 44238 173072 25661 0 2 0x4000000 syz-executor 44238 413013 25661 0 2 0x4000000 syz-executor 44238 222345 25661 0 2 0x4000000 syz-executor 83452 103584 34281 0 2 0 syz-executor 83452 468447 34281 0 2 0x4000000 syz-executor 83452 91777 34281 0 2 0x4000000 syz-executor 65848 173578 98491 0 3 0x82 nanoslp syz-executor 30907 202777 98491 0 3 0x82 nanoslp syz-executor 46520 94572 98491 0 3 0x82 nanoslp syz-executor 29369 176858 98491 0 3 0x82 nanoslp syz-executor 88014 230351 98491 0 3 0x82 nanoslp syz-executor 34281 255852 98491 0 3 0x82 nanoslp syz-executor 25661 377996 98491 0 3 0x82 nanoslp syz-executor 2920 22186 98491 0 3 0x82 nanoslp syz-executor 98491 200652 50298 0 2 0x2 syz-executor 50298 122949 77180 0 3 0x10008a sigsusp ksh 77180 216440 68652 0 3 0x98 kqread sshd-session 68652 294128 93695 0 3 0x92 kqread sshd-session 95376 235100 1 0 3 0x100083 ttyin getty 93695 258794 1 0 3 0x88 kqread sshd 29306 371310 52096 73 3 0x1100090 kqread syslogd 52096 453408 1 0 3 0x100082 sbwait syslogd 97100 421956 1 0 3 0x100080 kqread resolvd 85650 56137 65323 77 3 0x100092 kqread dhcpleased 24147 331867 65323 77 3 0x100092 kqread dhcpleased 65323 440379 1 0 3 0x80 kqread dhcpleased 35773 325012 0 0 3 0x14200 bored smr 32014 188657 0 0 2 0x14200 zerothread 35699 172458 0 0 3 0x14200 aiodoned aiodoned 78041 116865 0 0 3 0x14200 syncer update 52848 83867 0 0 3 0x14200 cleaner cleaner 44063 438093 0 0 3 0x14200 reaper reaper 10067 221222 0 0 3 0x14200 pgdaemon pagedaemon 68255 60857 0 0 3 0x14200 bored viomb 97686 256731 0 0 3 0x40014200 acpi0 acpi0 40000 496578 0 0 3 0x14200 bored softnet0 58688 234563 0 0 3 0x14200 bored systqmp 54624 380503 0 0 3 0x14200 bored systq 93994 480763 0 0 3 0x40014200 tmoslp softclock 46255 476861 0 0 3 0x40014200 idle0 1 412794 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 10164 11040K 11053K 166960K 11249 0 pcb 17 12K 12K 166960K 17 0 rtable 246 8K 8K 166960K 372 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 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1337 84K 84K 166960K 1359 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 18 65K 93K 166960K 139 0 proc 57 58K 91K 166960K 471 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 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 28 131K 131K 166960K 28 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 243 159K 167K 166960K 2919 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 94K 166960K 1217 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 17 0K 1K 166960K 27 0 temp 34 8634K 8698K 166960K 3777 0 kqueue 13 20K 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 38 0 34 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 3 0 3 1 1 0 1 0 8 0 tcpcb 736 7 0 3 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 57 0 50 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 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 453 0 0 29 0 29 29 0 8 0 art_table 40 455 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1564 0 56 95 0 95 95 0 8 0 ffsino 256 1564 0 56 95 0 95 95 0 8 0 nchpl 144 1749 0 50 63 0 63 63 0 8 0 vnodes 216 1645 0 0 92 0 92 92 0 8 0 namei 1024 5040 0 5036 2 1 1 2 0 8 0 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5652 0 5652 3 2 1 3 1 8 1 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 428 0 385 6 0 6 6 0 8 0 knotepl 120 2732 0 2684 2 0 2 2 0 8 0 kqueuepl 184 20 0 10 1 0 1 1 0 8 0 pipepl 304 113 0 86 3 0 3 3 0 8 0 fdescpl 448 415 0 385 5 1 4 5 0 8 0 filepl 120 1370 0 1156 7 0 7 7 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 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 63 0 52 1 0 1 1 0 8 0 zombiepl 144 385 0 385 1 1 0 1 0 8 0 processpl 1152 428 0 385 4 0 4 4 0 8 0 procpl 664 446 0 387 5 0 5 5 0 8 0 sockpl 552 131 0 102 3 0 3 3 0 8 0 mcl8k 8192 4 0 4 1 1 0 1 0 8 0 mcl4k 4096 2452 0 2401 13 4 9 13 0 8 0 mcl2k 2048 191 0 190 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 3974 0 3827 10 0 10 10 0 8 0 bufpl 280 2244 0 118 152 0 152 152 0 8 0 anonpl 24 96093 0 93034 23 4 19 23 0 187 0 amapchunkpl 152 8125 0 7609 20 0 20 20 0 158 0 amappl16 200 1806 0 1792 5 4 1 5 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 5 0 5 1 1 0 1 0 8 0 amappl13 176 412 0 411 1 0 1 1 0 8 0 amappl12 168 765 0 726 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 71 0 61 1 0 1 1 0 8 0 amappl9 144 251 0 250 1 0 1 1 0 8 0 amappl8 136 37 0 36 1 0 1 1 0 8 0 amappl7 128 101 0 100 1 0 1 1 0 8 0 amappl6 120 266 0 255 1 0 1 1 0 8 0 amappl5 112 81 0 74 1 0 1 1 0 8 0 amappl4 104 377 0 356 1 0 1 1 0 8 0 amappl3 96 1277 0 1181 3 0 3 3 0 8 0 amappl2 88 527 0 458 2 0 2 2 0 8 0 amappl1 80 8689 0 8149 13 1 12 13 0 8 0 amappl 88 2220 0 2047 4 0 4 4 0 92 0 uvmvnodes 80 1645 0 0 34 0 34 34 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 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 24 415 0 385 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 415 0 385 1 0 1 1 0 8 0 vmmpekpl 168 5100 0 5073 2 0 2 2 0 8 0 vmmpepl 168 34660 0 32862 79 0 79 79 0 357 0 vmsppl 368 414 0 385 4 1 3 4 0 8 0 rwobjpl 40 14504 0 12031 26 0 26 26 0 8 0 pdppl 4096 837 0 770 95 28 67 81 0 8 0 pvpl 32 210657 0 202158 69 0 69 69 0 265 0 pmappl 216 414 0 385 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 360 0 39 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a930c80,0,ffff80003a930bf0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148d300,ffff80003a930d28,ffff80003a930c80,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8078459900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8078459900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003a930ed8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94aa80,4,ffff80003a930fd0,808,ffff80003a931070) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94aa80,ffff80003a931120,ffff80003a931070) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a931120) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a931120) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x54724bab0d0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806a739568) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003a930c80,0,ffff80003a930bf0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff80000148d300,ffff80003a930d28,ffff80003a930c80,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8078459900,ffff800010fdf5a0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fdf5a0,fffffd8078459900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fdf5a0,0,ffff80003a930ed8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c94aa80,4,ffff80003a930fd0,808,ffff80003a931070) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c94aa80,ffff80003a931120,ffff80003a931070) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003a931120) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a931120) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x54724bab0d0, count: -10