uvm_fault(0xffffffff8384f648, 0xffff8000015cf06a, 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 *325428 60909 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963640,0,ffff80003c9635b0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014b9500,ffff80003c9636e8,ffff80003c963640,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e81d800,ffff800010fda460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fda460,fffffd806e81d800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fda460,0,ffff80003c963898,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a799a20,5,ffff80003c963990,808,ffff80003c963a30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a799a20,ffff80003c963ae0,ffff80003c963a30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53e2b502860, 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(0xffffffff8384f648, 0xffff8000015cf06a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963640,0,ffff80003c9635b0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014b9500,ffff80003c9636e8,ffff80003c963640,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e81d800,ffff800010fda460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fda460,fffffd806e81d800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fda460,0,ffff80003c963898,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a799a20,5,ffff80003c963990,808,ffff80003c963a30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a799a20,ffff80003c963ae0,ffff80003c963a30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53e2b502860, count: -10 ddb> show registers rdi 0xffff800036514000 rsi 0xb07 rbp 0xffff80003c963490 rbx 0xde rdx 0xffff800036514000 rcx 0xffff8000015cef80 rax 0xfffffd806e81d4e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xcd960f008ee03183 r11 0xcd83495e485588ca r12 0x1d r13 0xfffffd806e81d400 r14 0xfffffd806c220e70 r15 0xffff800000039058 rip 0xffffffff82d8bb44 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c963410 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=325428 pid=60909 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=0xffff80002a798fc0,0xffffffff83932298 process=0xffff8000ffff8d98 user=0xffff80003c95e000, vmspace=0xfffffd806d27dd00 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 60909 450097 47684 0 2 0 syz-executor *60909 325428 47684 0 7 0x4000000 syz-executor 84110 200533 51096 0 2 0xc80 syz-executor 84110 435239 51096 0 3 0x4000080 kqread syz-executor 84110 383176 51096 0 3 0x4000080 fsleep syz-executor 84110 248264 51096 0 3 0x4000080 fsleep syz-executor 55768 241277 80561 0 3 0x80 nanoslp syz-executor 55768 456820 80561 0 3 0x4000080 fsleep syz-executor 55768 424364 80561 0 3 0x4000080 lockf syz-executor 86455 61127 84046 60929 2 0xc90 syz-executor 86455 152335 84046 60929 3 0x4000090 sbwait syz-executor 86455 125282 84046 60929 3 0x4000090 fsleep syz-executor 52317 129969 23387 0 2 0xc80 syz-executor 52317 407803 23387 0 3 0x4000080 sbwait syz-executor 25343 523860 37061 -1 2 0xc90 syz-executor 25343 250448 37061 -1 3 0x4000090 bell syz-executor 25343 469046 37061 -1 3 0x4000090 fsleep syz-executor 50731 35870 73356 0 2 0xc80 syz-executor 50731 166708 73356 0 3 0x4000080 nanoslp syz-executor 50731 299838 73356 0 3 0x4000080 fsleep syz-executor 18267 316718 85507 0 2 0xc80 syz-executor 18267 285581 85507 0 3 0x4000080 kqread syz-executor 18267 148451 85507 0 3 0x4000080 msgwait syz-executor 73356 245054 68646 0 2 0xc82 syz-executor 47684 478196 68646 0 2 0xc82 syz-executor 85507 462356 68646 0 2 0xc82 syz-executor 51096 457484 68646 0 3 0x82 nanoslp syz-executor 37061 211822 68646 0 2 0xc82 syz-executor 80561 154777 68646 0 2 0xc82 syz-executor 23387 446516 68646 0 2 0xc82 syz-executor 84046 29403 68646 0 2 0xc82 syz-executor 68646 130866 98190 0 3 0x82 kqread syz-executor 98190 511609 24155 0 3 0x10008a sigsusp ksh 24155 432607 20429 0 3 0x98 kqread sshd-session 20429 482124 30620 0 3 0x92 kqread sshd-session 97097 370094 1 0 3 0x100083 ttyin getty 30620 471922 1 0 3 0x88 kqread sshd 7261 454021 18780 73 3 0x1100090 kqread syslogd 18780 212948 1 0 3 0x100082 sbwait syslogd 29190 5094 1 0 3 0x100080 kqread resolvd 10647 60463 24840 77 3 0x100092 kqread dhcpleased 10696 280976 24840 77 3 0x100092 kqread dhcpleased 24840 204781 1 0 3 0x80 kqread dhcpleased 68835 187850 0 0 3 0x14200 bored smr 56334 128112 0 0 2 0x14200 zerothread 27660 89110 0 0 3 0x14200 aiodoned aiodoned 44413 240339 0 0 3 0x14200 syncer update 8489 375884 0 0 3 0x14200 cleaner cleaner 98605 350453 0 0 3 0x14200 reaper reaper 95732 269767 0 0 3 0x14200 pgdaemon pagedaemon 35171 374892 0 0 3 0x14200 bored viomb 285 523448 0 0 3 0x40014200 acpi0 acpi0 16367 366409 0 0 3 0x14200 bored softnet0 25528 142359 0 0 3 0x14200 bored systqmp 84153 71955 0 0 3 0x14200 bored systq 99976 270092 0 0 3 0x40014200 tmoslp softclock 65379 372259 0 0 3 0x40014200 idle0 1 317450 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 10172 11043K 12128K 166960K 11647 0 pcb 20 14K 16K 166960K 126 0 rtable 260 9K 9K 166960K 407 0 pf 30 12K 13K 166960K 45 0 ifaddr 43 7K 8K 166960K 53 0 ifgroup 50 2K 2K 166960K 66 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 18K 166960K 40 0 ioctlops 0 0K 4K 166960K 115 0 iov 0 0K 17K 166960K 7 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1405 88K 89K 166960K 1505 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 7 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 97K 166960K 263 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 124K 166960K 494 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 1 0K 0K 166960K 17 0 in_multi 99 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 2 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 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 242 143K 151K 166960K 4072 0 UVM aobj 5 2K 2K 166960K 5 0 pinsyscall 39 78K 96K 166960K 1346 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 13 0 NDP 11 0K 2K 166960K 32 0 temp 37 8634K 8698K 166960K 4879 0 kqueue 19 27K 27K 166960K 47 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 49 0 45 1 0 1 1 0 8 0 rtentry 136 118 0 5 4 0 4 4 0 8 0 unpcb 144 92 0 72 1 0 1 1 0 8 0 syncache 336 4 0 4 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 40 0 33 1 0 1 1 0 8 0 arp 96 20 0 1 1 0 1 1 0 8 0 inpcb 328 218 0 203 7 0 7 7 0 8 5 nd6 112 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 6 0 6 1 0 1 1 0 8 1 pppxif 1384 1 0 1 1 0 1 1 0 8 1 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfrule 1344 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 461 0 8 29 0 29 29 0 8 0 art_table 40 463 0 8 5 0 5 5 0 8 0 art_node 32 118 0 17 1 0 1 1 0 8 0 semapl 112 5 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 1781 0 276 95 0 95 95 0 8 0 ffsino 256 1781 0 276 95 0 95 95 0 8 0 nchpl 144 2138 0 445 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 1974 0 0 110 0 110 110 0 8 0 namei 1024 6339 0 6339 2 1 1 2 0 8 1 kstatmem 264 32 0 10 2 0 2 2 0 8 0 scxspl 216 6577 0 6577 2 1 1 2 1 8 1 plimitpl 152 53 0 34 1 0 1 1 0 8 0 sigapl 424 553 0 510 6 1 5 6 0 8 0 knotepl 120 7943 0 7882 10 0 10 10 0 8 7 kqueuepl 184 123 0 109 4 3 1 4 0 8 0 pipepl 304 125 0 97 3 0 3 3 0 8 0 fdescpl 448 540 0 510 5 1 4 5 0 8 0 filepl 120 2225 0 1988 14 3 11 11 0 8 3 lockfpl 104 53 0 47 1 0 1 1 0 8 0 lockfspl 48 23 0 18 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 30 0 14 1 0 1 1 0 8 0 ucredpl 104 220 0 207 1 0 1 1 0 8 0 zombiepl 144 510 0 510 1 0 1 1 0 8 1 processpl 1152 553 0 510 4 0 4 4 0 8 0 procpl 664 752 0 694 7 1 6 6 0 8 0 sockpl 552 364 0 325 8 1 7 7 0 8 4 mcl64k 65536 8 0 8 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 4 0 4 1 1 0 1 0 8 0 mcl4k 4096 2613 0 2561 14 7 7 14 0 8 0 mcl2k 2048 357 0 354 2 0 2 2 0 8 1 mtagpl 96 4 0 4 1 1 0 1 0 8 0 mbufpl 256 5392 0 5226 12 0 12 12 0 8 1 bufpl 280 2412 0 120 164 0 164 164 0 8 0 anonpl 24 106997 0 103307 24 1 23 23 0 187 0 amapchunkpl 152 11916 0 11393 29 2 27 27 0 158 6 amappl16 200 2002 0 1943 7 3 4 5 0 8 0 amappl15 192 100 0 100 1 1 0 1 0 8 0 amappl14 184 7 0 7 1 1 0 1 0 8 0 amappl13 176 475 0 474 1 0 1 1 0 8 0 amappl12 168 919 0 879 3 1 2 3 0 8 0 amappl11 160 4 0 4 1 1 0 1 0 8 0 amappl10 152 43 0 33 1 0 1 1 0 8 0 amappl9 144 256 0 256 1 1 0 1 0 8 0 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 81 0 80 1 0 1 1 0 8 0 amappl6 120 260 0 249 1 0 1 1 0 8 0 amappl5 112 72 0 65 1 0 1 1 0 8 0 amappl4 104 385 0 360 1 0 1 1 0 8 0 amappl3 96 1963 0 1865 3 0 3 3 0 8 0 amappl2 88 654 0 585 2 0 2 2 0 8 0 amappl1 80 9538 0 9002 13 1 12 13 0 8 0 amappl 88 3351 0 3176 4 0 4 4 0 92 0 uvmvnodes 80 1974 0 0 41 0 41 41 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 4 0 0 1 0 1 1 0 8 0 uaddrrnd 24 540 0 510 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 540 0 510 1 0 1 1 0 8 0 vmmpekpl 168 6050 0 6014 2 0 2 2 0 8 0 vmmpepl 168 42204 0 40338 85 3 82 84 0 357 0 vmsppl 368 539 0 510 4 1 3 4 0 8 0 rwobjpl 40 16552 0 13699 29 0 29 29 0 8 0 pdppl 4096 1086 0 1020 96 30 66 82 0 8 0 pvpl 32 257155 0 246312 97 9 88 88 0 265 0 pmappl 216 539 0 510 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 367 0 45 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963640,0,ffff80003c9635b0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014b9500,ffff80003c9636e8,ffff80003c963640,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e81d800,ffff800010fda460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fda460,fffffd806e81d800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fda460,0,ffff80003c963898,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a799a20,5,ffff80003c963990,808,ffff80003c963a30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a799a20,ffff80003c963ae0,ffff80003c963a30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53e2b502860, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c220e70) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c963640,0,ffff80003c9635b0,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff8000014b9500,ffff80003c9636e8,ffff80003c963640,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806e81d800,ffff800010fda460) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fda460,fffffd806e81d800,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fda460,0,ffff80003c963898,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a799a20,5,ffff80003c963990,808,ffff80003c963a30) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a799a20,ffff80003c963ae0,ffff80003c963a30) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c963ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c963ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x53e2b502860, count: -10