uvm_fault(0xffffffff83835970, 0xffff8000014990ca, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND * 55124 94984 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038146ba0,0,ffff800038146b10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496b00,ffff800038146c48,ffff800038146ba0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c420000,ffff8000014177c0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014177c0,fffffd806c420000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014177c0,0,ffff800038146df8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5ca8,3,ffff800038146ef0,808,ffff800038146f90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5ca8,ffff800038147040,ffff800038146f90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038147040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038147040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81bbd8aac40, 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(0xffffffff83835970, 0xffff8000014990ca, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038146ba0,0,ffff800038146b10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496b00,ffff800038146c48,ffff800038146ba0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c420000,ffff8000014177c0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014177c0,fffffd806c420000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014177c0,0,ffff800038146df8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5ca8,3,ffff800038146ef0,808,ffff800038146f90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5ca8,ffff800038147040,ffff800038146f90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038147040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038147040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81bbd8aac40, count: -10 ddb> show registers rdi 0xffff80002a924000 rsi 0x939 rbp 0xffff8000381469f0 rbx 0xde rdx 0xffff80002a924000 rcx 0xffff800001498fe0 rax 0xfffffd806c4207e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xc04ec203daa61e54 r11 0xd6301c8f2b5eda63 r12 0x1a r13 0xfffffd806c420700 r14 0xfffffd80727fb700 r15 0xffff800000039058 rip 0xffffffff81600267 arp_rtrequest+0x657 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800038146970 ss 0x10 arp_rtrequest+0x657: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=55124 pid=94984 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=0xffff80002a7f5a10,0xffff80002a7f54f0 process=0xffff8000ffff9f98 user=0xffff800038142000, vmspace=0xfffffd806ba515d0 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 17611 188578 20529 0 2 0 syz-executor 77603 489945 54334 0 2 0x40 syz-executor 48671 165290 5128 0 2 0 syz-executor 77555 65044 12754 0 2 0 syz-executor 77555 162370 12754 0 3 0x4000080 nanoslp syz-executor 77555 407653 12754 0 3 0x4000080 fsleep syz-executor 14578 97996 1578 0 2 0 syz-executor 14578 493267 1578 0 3 0x4000080 fsleep syz-executor 52059 355855 97437 0 2 0 syz-executor 52059 202988 97437 0 3 0x4000080 fsleep syz-executor 94984 423396 89156 0 2 0 syz-executor *94984 55124 89156 0 7 0x4000000 syz-executor 54334 271273 39575 0 3 0x82 ppwait syz-executor 20529 406569 39575 0 3 0x82 nanoslp syz-executor 1578 415753 39575 0 3 0x82 nanoslp syz-executor 16932 381192 39575 0 3 0x2 biowait syz-executor 5128 350660 39575 0 2 0xc82 syz-executor 12754 42533 39575 0 2 0xc82 syz-executor 97437 243479 39575 0 2 0xc82 syz-executor 89156 57263 39575 0 2 0xc82 syz-executor 39575 164630 19563 0 2 0x2 syz-executor 19563 24067 20066 0 3 0x10008a sigsusp ksh 20066 206407 88451 0 3 0x98 kqread sshd-session 88451 174343 66805 0 3 0x92 kqread sshd-session 58053 374352 1 0 3 0x100083 ttyin getty 66805 19626 1 0 3 0x88 kqread sshd 69682 190685 82808 73 3 0x1100090 kqread syslogd 82808 369459 1 0 3 0x100082 sbwait syslogd 48510 157300 1 0 3 0x100080 kqread resolvd 23338 91988 231 77 3 0x100092 kqread dhcpleased 83106 490565 231 77 3 0x100092 kqread dhcpleased 231 155878 1 0 3 0x80 kqread dhcpleased 42345 260093 0 0 3 0x14200 bored smr 76393 5796 0 0 2 0x14200 zerothread 17796 169591 0 0 3 0x14200 aiodoned aiodoned 49980 311956 0 0 3 0x14200 syncer update 9145 186953 0 0 3 0x14200 cleaner cleaner 87571 242249 0 0 3 0x14200 reaper reaper 63773 353892 0 0 3 0x14200 pgdaemon pagedaemon 61476 269947 0 0 3 0x14200 bored viomb 63540 153020 0 0 3 0x40014200 acpi0 acpi0 93970 63744 0 0 3 0x14200 bored softnet7 45864 98293 0 0 3 0x14200 bored softnet6 13026 508019 0 0 3 0x14200 bored softnet5 71533 394538 0 0 3 0x14200 bored softnet4 56371 178083 0 0 3 0x14200 bored softnet3 96647 97299 0 0 3 0x14200 bored softnet2 87376 292933 0 0 3 0x14200 bored softnet1 57861 71484 0 0 3 0x14200 bored softnet0 22077 192803 0 0 3 0x14200 smrbar systqmp 74029 340291 0 0 3 0x14200 bored systq 96096 481255 0 0 3 0x40014200 tmoslp softclock 10570 464793 0 0 3 0x40014200 idle0 1 499355 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 10169 11040K 11053K 166960K 11246 0 pcb 17 12K 12K 166960K 17 0 rtable 214 7K 7K 166960K 276 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 1334 84K 84K 166960K 1352 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 3 0K 0K 166960K 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 135 0 proc 57 58K 124K 166960K 472 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 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 345 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 197 150K 159K 166960K 2691 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 96K 166960K 1162 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 33 8630K 8692K 166960K 3637 0 kqueue 13 20K 20K 166960K 21 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 96 0 1 4 0 4 4 0 8 0 unpcb 144 31 0 16 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 6 0 2 1 0 1 1 0 8 0 arp 88 10 0 0 1 0 1 1 0 8 0 inpcb 328 54 0 47 2 0 2 2 0 8 1 nd6 104 16 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 256 437 0 0 28 0 28 28 0 8 0 art_table 40 439 0 0 5 0 5 5 0 8 0 art_node 32 96 0 4 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1548 0 45 95 0 95 95 0 8 0 ffsino 256 1548 0 45 95 0 95 95 0 8 0 nchpl 144 1728 0 45 63 0 63 63 0 8 0 uvmvnodes 80 1629 0 0 34 0 34 34 0 8 0 vnodes 216 1629 0 0 91 0 91 91 0 8 0 namei 1024 5038 0 5037 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 6088 0 6087 8 0 8 8 1 8 7 plimitpl 152 26 0 10 1 0 1 1 0 8 0 sigapl 424 419 0 370 7 0 7 7 0 8 1 knotepl 120 2877 0 2830 2 0 2 2 0 8 0 kqueuepl 184 17 0 8 1 0 1 1 0 8 0 pipepl 304 100 0 72 3 0 3 3 0 8 0 fdescpl 448 399 0 370 5 0 5 5 0 8 1 filepl 120 1272 0 1063 7 0 7 7 0 8 0 lockfpl 104 7 0 4 1 0 1 1 0 8 0 lockfspl 48 5 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 64 0 53 1 0 1 1 0 8 0 zombiepl 144 370 0 370 1 0 1 1 0 8 1 processpl 1152 419 0 370 5 0 5 5 0 8 1 procpl 664 424 0 370 5 0 5 5 0 8 0 sockpl 552 122 0 96 3 0 3 3 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2435 0 2383 14 0 14 14 0 8 6 mcl2k 2048 146 0 143 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 3727 0 3590 9 0 9 9 0 8 0 bufpl 280 2807 0 117 193 0 193 193 0 8 0 anonpl 24 100083 0 97270 23 0 23 23 0 187 4 amapchunkpl 152 7830 0 7433 16 0 16 16 0 158 0 amappl16 200 1993 0 1982 5 0 5 5 0 8 4 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 105 0 95 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 0 1 1 0 8 1 amappl12 168 1008 0 981 3 0 3 3 0 8 1 amappl11 160 59 0 48 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 0 1 1 0 8 1 amappl9 144 246 0 246 1 0 1 1 0 8 1 amappl8 136 21 0 20 1 0 1 1 0 8 0 amappl7 128 95 0 85 1 0 1 1 0 8 0 amappl6 120 170 0 166 1 0 1 1 0 8 0 amappl5 112 116 0 110 1 0 1 1 0 8 0 amappl4 104 271 0 256 1 0 1 1 0 8 0 amappl3 96 1138 0 1048 3 0 3 3 0 8 0 amappl2 88 602 0 551 2 0 2 2 0 8 0 amappl1 80 7843 0 7300 13 0 13 13 0 8 0 amappl 88 2064 0 1930 4 0 4 4 0 92 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 24 399 0 370 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 399 0 370 1 0 1 1 0 8 0 vmmpekpl 168 4744 0 4720 2 0 2 2 0 8 0 vmmpepl 168 32061 0 30308 78 0 78 78 0 357 1 vmsppl 368 398 0 370 4 0 4 4 0 8 1 rwobjpl 40 13649 0 11227 26 0 26 26 0 8 0 pdppl 4096 805 0 740 97 14 83 83 0 8 18 pvpl 32 208079 0 200480 69 0 69 69 0 265 5 pmappl 216 398 0 370 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 361 0 14 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038146ba0,0,ffff800038146b10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496b00,ffff800038146c48,ffff800038146ba0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c420000,ffff8000014177c0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014177c0,fffffd806c420000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014177c0,0,ffff800038146df8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5ca8,3,ffff800038146ef0,808,ffff800038146f90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5ca8,ffff800038147040,ffff800038146f90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038147040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038147040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81bbd8aac40, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 arprequest sys/netinet/if_ether.c:279 [inline] arp_rtrequest(ffff800000039058,1,fffffd80727fb700) at arp_rtrequest+0x657 sys/netinet/if_ether.c:182 rtrequest(1,ffff800038146ba0,0,ffff800038146b10,16) at rtrequest+0xf08 sys/net/route.c:1115 rtm_output(ffff800001496b00,ffff800038146c48,ffff800038146ba0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd806c420000,ffff8000014177c0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff8000014177c0,fffffd806c420000,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff8000014177c0,0,ffff800038146df8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7f5ca8,3,ffff800038146ef0,808,ffff800038146f90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7f5ca8,ffff800038147040,ffff800038146f90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800038147040) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800038147040) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x81bbd8aac40, count: -10