uvm_fault(0xffffffff83920a98, 0xffff80000150d02a, 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 *346435 1788 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff800033916ff8,0,ffff800033916f70,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000154b100,ffff8000339170a0,ffff800033916ff8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806b6e7100,ffff800001506680) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001506680,fffffd806b6e7100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001506680,0,ffff800033917248,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff800035d26a68,5,ffff800033917340,808,ffff8000339173f0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff800035d26a68,ffff8000339174a0,ffff8000339173f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff8000339174a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000339174a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c0d3594bf0, 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(0xffffffff83920a98, 0xffff80000150d02a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff800033916ff8,0,ffff800033916f70,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000154b100,ffff8000339170a0,ffff800033916ff8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806b6e7100,ffff800001506680) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001506680,fffffd806b6e7100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001506680,0,ffff800033917248,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff800035d26a68,5,ffff800033917340,808,ffff8000339173f0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff800035d26a68,ffff8000339174a0,ffff8000339173f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff8000339174a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000339174a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c0d3594bf0, count: -10 ddb> show registers rdi 0xffff800035d28000 rsi 0x8b2 rbp 0xffff800033916e40 rbx 0xde rdx 0xffff800035d28000 rcx 0x100040600080100 rax 0xfffffd806ea744e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xefc84c87ddfa45db r11 0xdf5b15271e10afb3 r12 0x36 r13 0xfffffd806ea74400 r14 0xfffffd806b8ca898 r15 0xffff80000150cf40 rip 0xffffffff8136838e arp_rtrequest+0x65e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800033916dc0 ss 0x10 arp_rtrequest+0x65e: movzwl 0xc(%r15,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=346435 pid=1788 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=0xffff800035d26cf8,0xffffffff83891df0 process=0xffff80003391b678 user=0xffff800033912000, vmspace=0xfffffd806c29ccb8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 1788 297028 82111 0 2 0 syz-executor * 1788 346435 82111 0 7 0x4000000 syz-executor 71025 311434 92585 0 2 0 syz-executor 71025 426080 92585 0 3 0x4000080 lockf syz-executor 44155 272656 83018 0 3 0x80 nanoslp syz-executor 44155 126056 83018 0 3 0x4000080 kqread syz-executor 44155 462924 83018 0 3 0x4000080 fsleep syz-executor 90243 15309 90145 0 3 0x80 nanoslp syz-executor 90243 40690 90145 0 3 0x4000080 lockf syz-executor 90243 5913 90145 0 3 0x4000080 fsleep syz-executor 45911 319086 93082 0 3 0x80 nanoslp syz-executor 45911 87595 93082 0 3 0x4000080 kqpoll syz-executor 45911 249085 93082 0 3 0x4000080 fsleep syz-executor 45911 420876 93082 0 3 0x4000080 fsleep syz-executor 83672 349432 45011 0 3 0x80 nanoslp syz-executor 83672 386043 45011 0 3 0x4000080 msgwait syz-executor 83672 441241 45011 0 3 0x4000080 fsleep syz-executor 93082 193792 34638 0 3 0x82 nanoslp syz-executor 45011 372674 34638 0 3 0x82 nanoslp syz-executor 90145 70707 34638 0 3 0x82 nanoslp syz-executor 83018 397196 34638 0 3 0x82 nanoslp syz-executor 18700 319501 0 0 3 0x14200 bored sosplice 82111 67632 34638 0 3 0x82 nanoslp syz-executor 87334 63960 34638 0 3 0x82 piperd syz-executor 2276 252550 34638 0 3 0x82 nanoslp syz-executor 92585 385728 34638 0 3 0x82 nanoslp syz-executor 34638 508863 9506 0 2 0x2 syz-executor 9506 483924 78044 0 3 0x10008a sigsusp ksh 78044 314314 18097 0 3 0x98 kqread sshd-session 18097 70296 47567 0 3 0x92 kqread sshd-session 10606 167080 1 0 3 0x100083 ttyopn getty 47567 111191 1 0 3 0x88 kqread sshd 66616 230365 8472 73 3 0x1100090 kqread syslogd 8472 81416 1 0 3 0x100082 sbwait syslogd 31907 143940 1 0 3 0x100080 kqread resolvd 43548 47665 39822 77 3 0x100092 kqread dhcpleased 91217 412705 39822 77 3 0x100092 kqread dhcpleased 39822 450756 1 0 3 0x80 kqread dhcpleased 77823 497871 0 0 3 0x14200 bored smr 22208 484849 0 0 2 0x14200 zerothread 14010 228272 0 0 3 0x14200 aiodoned aiodoned 76400 235812 0 0 3 0x14200 syncer update 21456 395129 0 0 3 0x14200 cleaner cleaner 75540 296098 0 0 3 0x14200 reaper reaper 97309 199228 0 0 3 0x14200 pgdaemon pagedaemon 11541 101269 0 0 3 0x14200 bored viomb 19394 78115 0 0 3 0x40014200 acpi0 acpi0 84400 328100 0 0 3 0x14200 bored softnet3 59352 384016 0 0 3 0x14200 bored softnet2 53860 263731 0 0 3 0x14200 bored softnet1 35225 248514 0 0 3 0x14200 bored softnet0 97574 295594 0 0 3 0x14200 bored systqmp 31270 245001 0 0 3 0x14200 bored systq 6888 306947 0 0 3 0x40014200 tmoslp softclock 58186 476255 0 0 3 0x40014200 idle0 1 487604 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10176 11040K 11785K 166960K 12728 0 pcb 18 16K 21K 166960K 433 0 rtable 192 10K 10K 166960K 624 0 pf 28 12K 17K 166960K 137 0 ifaddr 33 6K 7K 166960K 112 0 ifgroup 42 1K 2K 166960K 181 0 sysctl 3 1K 9K 166960K 10 0 counters 30 17K 18K 166960K 86 0 ioctlops 0 0K 4K 166960K 222 0 iov 0 0K 18K 166960K 90 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1435 90K 91K 166960K 2324 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 45 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 963 0 sigio 0 0K 0K 166960K 21 0 proc 60 59K 91K 166960K 682 0 subproc 72 4K 4K 166960K 119 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 153 0 in_multi 74 5K 7K 166960K 185 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 531 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 237 159K 176K 166960K 9851 0 UVM aobj 23 4K 4K 166960K 23 0 pinsyscall 38 76K 94K 166960K 2145 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 38 0 NDP 11 0K 2K 166960K 77 0 temp 60 8684K 8802K 166960K 31704 0 kqueue 16 26K 32K 166960K 188 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 120 274 0 270 3 0 3 3 0 8 2 rtentry 136 191 0 112 4 0 4 4 0 8 0 unpcb 144 987 0 970 6 0 6 6 0 8 5 syncache 336 10 0 10 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 300 0 294 7 0 7 7 0 8 6 arp 88 32 0 17 1 0 1 1 0 8 0 ipq 40 3 0 1 1 0 1 1 0 8 0 ipqe 40 5 0 3 1 0 1 1 0 8 0 inpcb 328 1081 0 1069 10 1 9 10 0 8 6 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 2 0 0 1 0 1 1 0 8 0 nd6 104 44 0 25 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 34 0 34 1 0 1 1 0 8 1 pppxif 1384 7 0 7 1 0 1 1 0 8 1 pfrktable 1344 4 0 1 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 1 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1344 8 0 3 1 0 1 1 0 8 0 rttmr 136 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 852 0 513 29 0 29 29 0 8 7 art_table 32 855 0 513 4 0 4 4 0 8 0 art_node 16 186 0 116 1 0 1 1 0 8 0 sysvmsgpl 40 76 0 76 1 0 1 1 0 8 1 semapl 112 40 0 30 1 0 1 1 0 8 0 shmpl 112 20 0 0 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 3227 0 1723 95 0 95 95 0 8 0 ffsino 248 3227 0 1723 95 0 95 95 0 8 0 nchpl 144 4536 0 2828 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 uvmvnodes 80 3799 0 0 78 0 78 78 0 8 0 vnodes 216 3799 0 0 212 0 212 212 0 8 0 namei 1024 16796 0 16796 2 0 2 2 0 8 2 pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0 kstatmem 264 102 0 84 2 0 2 2 0 8 0 scsiplug 72 7 0 7 1 0 1 1 0 8 1 scxspl 216 17827 0 17827 8 0 8 8 1 8 8 plimitpl 152 170 0 153 1 0 1 1 0 8 0 sigapl 424 1238 0 1192 6 0 6 6 0 8 0 knotepl 120 66526 0 66473 29 18 11 20 0 8 8 kqueuepl 184 444 0 431 4 0 4 4 0 8 3 pipepl 296 251 0 222 3 0 3 3 0 8 0 fdescpl 440 1220 0 1191 5 0 5 5 0 8 1 filepl 120 9251 0 8949 13 0 13 13 0 8 3 lockfpl 104 561 0 553 2 0 2 2 0 8 1 lockfspl 48 237 0 232 1 0 1 1 0 8 0 sessionpl 144 32 0 24 1 0 1 1 0 8 0 pgrppl 48 65 0 48 1 0 1 1 0 8 0 ucredpl 104 1527 0 1515 1 0 1 1 0 8 0 zombiepl 144 1193 0 1192 1 0 1 1 0 8 0 processpl 1160 1238 0 1192 4 0 4 4 0 8 0 procpl 656 2433 0 2376 6 0 6 6 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 528 2359 0 2326 12 0 12 12 0 8 8 mcl64k 65536 93 0 93 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 12 0 12 1 0 1 1 0 8 1 mcl4k 4096 3419 0 3368 13 0 13 13 0 8 6 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 963 0 959 5 0 5 5 0 8 3 mtagpl 96 85 0 11 2 0 2 2 0 8 0 mbufpl 256 15074 0 14883 30 6 24 25 0 8 8 bufpl 280 6245 0 155 435 0 435 435 0 8 0 anonpl 24 180458 0 176458 50 0 50 50 0 187 12 amapchunkpl 152 32573 0 32028 33 0 33 33 0 158 8 amappl16 200 3072 0 3037 16 3 13 16 0 8 7 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 125 0 115 1 0 1 1 0 8 0 amappl13 176 24 0 24 1 0 1 1 0 8 1 amappl12 168 1911 0 1882 2 0 2 2 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 35 0 35 1 0 1 1 0 8 1 amappl9 144 254 0 254 1 0 1 1 0 8 1 amappl8 136 17 0 15 1 0 1 1 0 8 0 amappl7 128 143 0 133 1 0 1 1 0 8 0 amappl6 120 222 0 218 1 0 1 1 0 8 0 amappl5 112 204 0 197 1 0 1 1 0 8 0 amappl4 104 318 0 301 1 0 1 1 0 8 0 amappl3 96 6448 0 6334 4 0 4 4 0 8 0 amappl2 88 740 0 684 2 0 2 2 0 8 0 amappl1 80 13152 0 12590 14 0 14 14 0 8 0 amappl 88 8957 0 8783 5 0 5 5 0 92 0 dma32768 32768 2 0 2 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 8 0 8 1 0 1 1 0 8 1 dma128 128 256 0 256 1 0 1 1 0 8 1 dma64 64 7 0 7 1 0 1 1 0 8 1 dma32 32 8 0 8 1 0 1 1 0 8 1 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 22 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1220 0 1191 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1220 0 1191 1 0 1 1 0 8 0 vmmpekpl 168 11113 0 11076 3 0 3 3 0 8 0 vmmpepl 168 82388 0 80506 94 0 94 94 0 357 7 vmsppl 360 1219 0 1191 4 0 4 4 0 8 1 rwobjpl 32 26904 0 22198 39 0 39 39 0 8 0 pdppl 4096 2446 0 2382 104 36 68 80 0 8 4 pvpl 32 521388 0 511640 126 0 126 126 0 265 22 pmappl 216 1219 0 1191 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 302 0 42 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff800033916ff8,0,ffff800033916f70,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000154b100,ffff8000339170a0,ffff800033916ff8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806b6e7100,ffff800001506680) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001506680,fffffd806b6e7100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001506680,0,ffff800033917248,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff800035d26a68,5,ffff800033917340,808,ffff8000339173f0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff800035d26a68,ffff8000339174a0,ffff8000339173f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff8000339174a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000339174a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c0d3594bf0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e arprequest sys/netinet/if_ether.c:281 [inline] arp_rtrequest(ffff800000039058,1,fffffd806b8ca898) at arp_rtrequest+0x65e sys/netinet/if_ether.c:184 rtrequest(1,ffff800033916ff8,0,ffff800033916f70,16) at rtrequest+0xd4c sys/net/route.c:1117 rtm_output(ffff80000154b100,ffff8000339170a0,ffff800033916ff8,0,16) at rtm_output+0x855 sys/net/rtsock.c:973 route_output(fffffd806b6e7100,ffff800001506680) at route_output+0x9ac sys/net/rtsock.c:878 route_send(ffff800001506680,fffffd806b6e7100,0,0) at route_send+0xd7 sys/net/rtsock.c:342 sosend(ffff800001506680,0,ffff800033917248,0,0,808) at sosend+0x824 sys/kern/uipc_socket.c:-1 sendit(ffff800035d26a68,5,ffff800033917340,808,ffff8000339173f0) at sendit+0x721 sys/kern/uipc_syscalls.c:779 sys_sendto(ffff800035d26a68,ffff8000339174a0,ffff8000339173f0) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:557 syscall(ffff8000339174a0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000339174a0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3c0d3594bf0, count: -10