uvm_fault(0xffffffff839639b8, 0xffff80000149608a, 0, 1) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx TID PID UID PRFLAGS PFLAGS CPU COMMAND *341569 48320 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c93d5a8,0,ffff80003c93d520,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a8900,ffff80003c93d650,ffff80003c93d5a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd8067e39800,ffff800010fdd088) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdd088,fffffd8067e39800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdd088,0,ffff80003c93d7f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c96a2b8,3,ffff80003c93d8f0,808,ffff80003c93d9a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c96a2b8,ffff80003c93da50,ffff80003c93d9a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c93da50) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93da50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xccb2c1c24e0, 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(0xffffffff839639b8, 0xffff80000149608a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c93d5a8,0,ffff80003c93d520,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a8900,ffff80003c93d650,ffff80003c93d5a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd8067e39800,ffff800010fdd088) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdd088,fffffd8067e39800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdd088,0,ffff80003c93d7f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c96a2b8,3,ffff80003c93d8f0,808,ffff80003c93d9a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c96a2b8,ffff80003c93da50,ffff80003c93d9a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c93da50) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93da50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xccb2c1c24e0, count: -10 ddb> show registers rdi 0xffff80002f902000 rsi 0x8ea rbp 0xffff80003c93d3f0 rbx 0xde rdx 0xffff80002f902000 rcx 0x100040600080100 rax 0xfffffd8067f986e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xc2cb5f0ae3935e2a r11 0xa19d6200de418f62 r12 0x27 r13 0xfffffd8067f98600 r14 0xfffffd806ecc0cc0 r15 0xffff800001495fa0 rip 0xffffffff81a6607e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c93d370 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=341569 pid=48320 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=0xffff80003c96acf8,0xffff80003c96b748 process=0xffff800035d15b48 user=0xffff80003c938000, vmspace=0xfffffd806c3f1448 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 44025 114923 94984 0 2 0 syz-executor 44025 296135 94984 0 3 0x4000080 fsleep syz-executor 48320 254903 17974 0 2 0 syz-executor *48320 341569 17974 0 7 0x4000000 syz-executor 75006 195558 29522 0 2 0 syz-executor 43224 270114 1008 0 2 0 syz-executor 17117 433758 64192 0 2 0 syz-executor 17117 415946 64192 0 2 0x4000000 syz-executor 54165 113254 61660 0 3 0x80 fsleep syz-executor 54165 24939 61660 0 3 0x4000080 ttyout syz-executor 7058 349875 17214 0 3 0x80 fsleep syz-executor 7058 372417 17214 0 3 0x4000080 ttyin syz-executor 7058 372194 17214 0 3 0x4000000 inode syz-executor 36531 137035 0 0 3 0x14200 bored sosplice 98246 509672 0 0 3 0x14280 nfsidl nfsio 88993 485780 0 0 3 0x14280 nfsidl nfsio 54575 516571 0 0 3 0x14280 nfsidl nfsio 70686 496678 0 0 3 0x14280 nfsidl nfsio 4427 137153 0 0 3 0x14280 nfsidl nfsio 98557 230019 0 0 3 0x14280 nfsidl nfsio 32601 349225 0 0 3 0x14280 nfsidl nfsio 35615 394105 0 0 3 0x14280 nfsidl nfsio 88304 432118 0 0 3 0x14280 nfsidl nfsio 57102 211859 0 0 3 0x14280 nfsidl nfsio 19305 322107 0 0 3 0x14280 nfsidl nfsio 29915 425921 0 0 3 0x14280 nfsidl nfsio 33117 445948 0 0 3 0x14280 nfsidl nfsio 9164 60119 0 0 3 0x14280 nfsidl nfsio 2474 117885 0 0 3 0x14280 nfsidl nfsio 28227 487742 0 0 3 0x14280 nfsidl nfsio 89279 29968 0 0 3 0x14280 nfsidl nfsio 68705 206041 0 0 3 0x14280 nfsidl nfsio 47527 63898 0 0 3 0x14280 nfsidl nfsio 16685 267239 0 0 3 0x14280 nfsidl nfsio 94984 167094 65105 0 2 0xc82 syz-executor 27275 82798 65105 0 2 0x2 syz-executor 61660 338411 65105 0 2 0xc82 syz-executor 64192 342178 65105 0 3 0x82 nanoslp syz-executor 17974 42489 65105 0 2 0xc82 syz-executor 29522 104870 65105 0 2 0xc82 syz-executor 17214 362689 65105 0 3 0x82 wait syz-executor 1008 484311 65105 0 2 0xc82 syz-executor 65105 89273 5397 0 3 0x82 kqread syz-executor 5397 250506 85598 0 3 0x10008a sigsusp ksh 85598 388398 91797 0 3 0x98 kqread sshd-session 91797 210646 56643 0 3 0x92 kqread sshd-session 91876 167859 1 0 3 0x100083 ttyin getty 56643 370129 1 0 3 0x88 kqread sshd 76158 447316 58191 73 3 0x1100090 kqread syslogd 58191 355584 1 0 3 0x100082 sbwait syslogd 43891 63117 1 0 3 0x100080 kqread resolvd 6799 226236 62613 77 3 0x100092 kqread dhcpleased 7724 257952 62613 77 3 0x100092 kqread dhcpleased 62613 512596 1 0 3 0x80 kqread dhcpleased 57284 161833 0 0 3 0x14200 bored smr 32518 101913 0 0 2 0x14200 zerothread 14555 256769 0 0 3 0x14200 aiodoned aiodoned 16585 456578 0 0 3 0x14200 syncer update 53559 34896 0 0 3 0x14200 cleaner cleaner 27908 6404 0 0 3 0x14200 reaper reaper 35970 490040 0 0 3 0x14200 pgdaemon pagedaemon 26924 372694 0 0 3 0x14200 bored viomb 55927 512046 0 0 3 0x40014200 acpi0 acpi0 69129 124014 0 0 3 0x14200 bored softnet3 59834 358352 0 0 3 0x14200 bored softnet2 11262 431327 0 0 3 0x14200 bored softnet1 74476 89266 0 0 3 0x14200 bored softnet0 82108 100347 0 0 3 0x14200 bored systqmp 78013 214971 0 0 3 0x14200 bored systq 76310 164640 0 0 2 0x40014200 softclock 80509 418196 0 0 3 0x40014200 idle0 1 331429 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 10179 11041K 11790K 166960K 12323 0 pcb 17 17K 19K 166960K 139 0 rtable 210 8K 8K 166960K 422 0 pf 32 13K 15K 166960K 65 0 ifaddr 40 7K 8K 166960K 67 0 ifgroup 50 2K 2K 166960K 97 0 sysctl 1 1K 9K 166960K 10 0 counters 32 17K 18K 166960K 54 0 ioctlops 0 0K 4K 166960K 91 0 iov 0 0K 16K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1438 90K 91K 166960K 2097 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 9K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 22 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 561 0 proc 60 59K 91K 166960K 511 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 61 0 in_multi 91 6K 7K 166960K 133 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 396 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 224 159K 172K 166960K 6496 0 UVM aobj 12 2K 2K 166960K 14 0 pinsyscall 38 76K 94K 166960K 1593 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 16 0 NDP 11 0K 2K 166960K 39 0 temp 47 8681K 8754K 166960K 30144 0 kqueue 14 22K 28K 166960K 108 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 120 103 0 99 2 1 1 2 0 8 0 rtentry 136 131 0 38 4 0 4 4 0 8 0 unpcb 144 240 0 225 1 0 1 1 0 8 0 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpcb 736 123 0 119 4 3 1 4 0 8 0 arp 88 20 0 3 1 0 1 1 0 8 0 inpcb 328 1060 0 1052 24 23 1 18 0 8 0 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 5 0 3 1 0 1 1 0 8 0 nd6 104 28 0 5 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 13 0 13 1 1 0 1 0 8 0 pppxif 1384 6 0 6 1 1 0 1 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 4 0 2 1 0 1 1 0 8 0 pfstate 384 3 0 2 1 0 1 1 0 8 0 pfrule 1344 6 0 5 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 554 0 139 29 2 27 29 0 8 0 art_table 32 556 0 139 4 0 4 4 0 8 0 art_node 16 127 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 3 1 1 0 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 11 0 2 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2478 0 982 95 0 95 95 0 8 0 ffsino 248 2478 0 982 95 0 95 95 0 8 0 nchpl 144 3281 0 1598 63 0 63 63 0 8 0 rtmask 32 2 0 2 1 1 0 1 0 8 0 uvmvnodes 80 3004 0 0 62 0 62 62 0 8 0 vnodes 216 3004 0 0 167 0 167 167 0 8 0 namei 1024 10992 0 10991 2 1 1 2 0 8 0 kstatmem 264 46 0 24 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 1 0 1 0 8 0 scxspl 216 10073 0 10073 2 1 1 2 1 8 1 plimitpl 152 77 0 60 1 0 1 1 0 8 0 sigapl 424 861 0 795 8 0 8 8 0 8 0 knotepl 120 54636 0 54586 17 14 3 17 0 8 0 kqueuepl 184 154 0 143 1 0 1 1 0 8 0 pipepl 296 133 0 106 3 0 3 3 0 8 0 fdescpl 440 824 0 795 5 1 4 5 0 8 0 filepl 120 5545 0 5329 15 7 8 15 0 8 0 lockfpl 104 189 0 186 1 0 1 1 0 8 0 lockfspl 48 90 0 87 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 36 0 20 1 0 1 1 0 8 0 ucredpl 104 961 0 949 1 0 1 1 0 8 0 zombiepl 144 795 0 795 1 1 0 1 0 8 0 processpl 1160 861 0 795 5 0 5 5 0 8 0 procpl 656 1505 0 1433 7 0 7 7 0 8 0 sockpl 528 1415 0 1388 18 16 2 16 0 8 0 mcl64k 65536 9 0 9 1 1 0 1 0 8 0 mcl16k 16384 2 0 2 1 1 0 1 0 8 0 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 8 0 8 1 1 0 1 0 8 0 mcl4k 4096 2985 0 2929 15 7 8 15 0 8 0 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 561 0 556 2 1 1 2 0 8 0 mtagpl 96 18 0 7 1 0 1 1 0 8 0 mbufpl 256 8372 0 8176 13 0 13 13 0 8 0 bufpl 280 3279 0 122 226 0 226 226 0 8 0 anonpl 24 131524 0 127682 46 13 33 46 0 187 0 amapchunkpl 152 20438 0 19927 25 5 20 25 0 158 0 amappl16 200 2250 0 2221 19 16 3 15 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 130 0 120 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 1 0 1 0 8 0 amappl12 168 1429 0 1400 2 0 2 2 0 8 0 amappl11 160 43 0 33 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 243 0 243 1 1 0 1 0 8 0 amappl8 136 31 0 29 1 0 1 1 0 8 0 amappl7 128 96 0 86 1 0 1 1 0 8 0 amappl6 120 170 0 167 1 0 1 1 0 8 0 amappl5 112 114 0 108 1 0 1 1 0 8 0 amappl4 104 299 0 282 1 0 1 1 0 8 0 amappl3 96 4003 0 3899 4 1 3 4 0 8 0 amappl2 88 632 0 576 2 0 2 2 0 8 0 amappl1 80 9915 0 9358 14 1 13 14 0 8 0 amappl 88 5770 0 5612 5 1 4 5 0 92 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 1 1 0 1 0 8 0 dma128 128 254 0 254 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 13 0 2 1 0 1 1 0 8 0 uaddrrnd 24 824 0 795 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 824 0 795 1 0 1 1 0 8 0 vmmpekpl 168 8034 0 8000 2 0 2 2 0 8 0 vmmpepl 168 57774 0 55936 99 7 92 99 0 357 0 vmsppl 360 823 0 795 4 1 3 4 0 8 0 rwobjpl 32 19696 0 15837 32 0 32 32 0 8 0 pdppl 4096 1655 0 1590 97 32 65 81 0 8 0 pvpl 32 365444 0 356188 121 26 95 121 0 265 0 pmappl 216 823 0 795 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 270 0 53 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c93d5a8,0,ffff80003c93d520,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a8900,ffff80003c93d650,ffff80003c93d5a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd8067e39800,ffff800010fdd088) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdd088,fffffd8067e39800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdd088,0,ffff80003c93d7f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c96a2b8,3,ffff80003c93d8f0,808,ffff80003c93d9a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c96a2b8,ffff80003c93da50,ffff80003c93d9a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c93da50) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93da50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xccb2c1c24e0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806ecc0cc0) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff80003c93d5a8,0,ffff80003c93d520,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff8000014a8900,ffff80003c93d650,ffff80003c93d5a8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd8067e39800,ffff800010fdd088) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800010fdd088,fffffd8067e39800,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800010fdd088,0,ffff80003c93d7f8,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff80003c96a2b8,3,ffff80003c93d8f0,808,ffff80003c93d9a0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff80003c96a2b8,ffff80003c93da50,ffff80003c93d9a0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff80003c93da50) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c93da50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xccb2c1c24e0, count: -10