uvm_fault(0xffffffff839ff588, 0xffff8000016140aa, 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 * 54162 78403 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000318bd450,0,ffff8000318bd3c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001611d00,ffff8000318bd4f8,ffff8000318bd450,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff60069588100,ffff800010fe1378) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1378,fffff60069588100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1378,0,ffff8000318bd6a8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a75b240,3,ffff8000318bd7a0,808,ffff8000318bd840) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a75b240,ffff8000318bd8f0,ffff8000318bd840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000318bd8f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000318bd8f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf1ef8505c80, 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(0xffffffff839ff588, 0xffff8000016140aa, 0, 1) -> e ddb> show kasan No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000318bd450,0,ffff8000318bd3c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001611d00,ffff8000318bd4f8,ffff8000318bd450,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff60069588100,ffff800010fe1378) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1378,fffff60069588100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1378,0,ffff8000318bd6a8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a75b240,3,ffff8000318bd7a0,808,ffff8000318bd840) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a75b240,ffff8000318bd8f0,ffff8000318bd840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000318bd8f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000318bd8f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf1ef8505c80, count: -10 ddb> show registers rdi 0xffff80002a8a6000 rsi 0xbbb rbp 0xffff8000318bd2a0 rbx 0xde rdx 0xffff80002a8a6000 rcx 0xffff800001613fc0 rax 0xfffff600695883e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x8dbc76d397f619db r11 0xfd810d026011eb4f r12 0x1a r13 0xfffff60069588300 r14 0xfffff6006d14d5f0 r15 0xffff8000002a3058 rip 0xffffffff8125f604 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000318bd220 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=54162 pid=78403 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a75a548,0xffffffff839fe518 process=0xffff800045ff9f98 user=0xffff8000318b8000, vmspace=0xfffff6006db998b0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 78403 369131 6536 0 2 0 0 syz-executor *78403 54162 6536 0 7 0 0x4000000 syz-executor 63292 362896 72926 -1 2 0x10 0 syz-executor 63292 342718 72926 -1 3 0x10 0x4000080 fsleep syz-executor 96691 372610 60628 0 2 0 0 syz-executor 96691 315266 60628 0 3 0 0x4000080 kqread syz-executor 30928 16313 90039 0 2 0x10 0xc80 syz-executor 30928 183010 90039 0 3 0x10 0x4000088 kqpoll syz-executor 30928 32656 90039 0 3 0x10 0x4000080 fsleep syz-executor 1750 445830 82109 0 2 0 0 syz-executor 1750 278582 82109 0 3 0 0x4000080 fsleep syz-executor 1750 119423 82109 0 3 0 0x4000080 fsleep syz-executor 5217 263119 83251 0 2 0 0 syz-executor 5217 274314 83251 0 3 0 0x4000080 fsleep syz-executor 5217 227762 83251 0 3 0 0x4000080 fsleep syz-executor 52421 435930 61677 -1 2 0x10 0 syz-executor 52421 267848 61677 -1 3 0x10 0x4000080 fsleep syz-executor 61677 520359 61616 0 3 0x2 0x80 nanoslp syz-executor 59001 335490 61616 0 2 0x2 0 syz-executor 83251 346348 61616 0 2 0x2 0xc80 syz-executor 72926 288469 61616 0 3 0x2 0x80 nanoslp syz-executor 90039 165564 61616 0 2 0x2 0xc80 syz-executor 82109 444955 61616 0 3 0x2 0x80 nanoslp syz-executor 60628 298703 61616 0 3 0x2 0x80 nanoslp syz-executor 6536 10843 61616 0 3 0x2 0x80 nanoslp syz-executor 61616 409055 51886 0 3 0x2 0x80 kqread syz-executor 51886 36043 99041 0 3 0x100002 0x88 sigsusp ksh 99041 441170 6355 0 3 0x10 0x88 kqread sshd-session 6355 196488 10863 0 3 0x12 0x80 kqread sshd-session 18304 150693 1 0 3 0x100003 0x80 ttyin getty 10863 176567 1 0 3 0 0x88 kqread sshd 46028 45841 45328 73 3 0x1100010 0x80 kqread syslogd 45328 110261 1 0 3 0x100002 0x80 sbwait syslogd 72091 178796 1 0 3 0x100000 0x80 kqread resolvd 68251 380617 86984 77 3 0x100012 0x80 kqread dhcpleased 78150 26538 86984 77 3 0x100012 0x80 kqread dhcpleased 86984 97206 1 0 3 0 0x80 kqread dhcpleased 7687 421253 0 0 3 0x14000 0x200 bored smr 61021 64622 0 0 2 0x14000 0x200 zerothread 3762 387879 0 0 3 0x14000 0x200 aiodoned aiodoned 56912 10594 0 0 3 0x14000 0x200 syncer update 23572 400144 0 0 3 0x14000 0x200 cleaner cleaner 29556 94957 0 0 3 0x14000 0x200 reaper reaper 6406 73715 0 0 3 0x14000 0x200 pgdaemon pagedaemon 6677 172124 0 0 3 0x14000 0x200 bored viomb 26724 407920 0 0 3 0x14000 0x40000200 acpi0 acpi0 41278 9070 0 0 3 0x14000 0x200 bored softnet0 15692 75178 0 0 3 0x14000 0x200 bored systqmp 51288 495259 0 0 3 0x14000 0x200 bored systq 46934 315921 0 0 2 0x14000 0x40000200 softclock 72388 301083 0 0 3 0x14000 0x40000200 idle0 1 440586 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11026 12100K 12249K 166960K 12217 0 pcb 19 14K 16K 166960K 42 0 rtable 236 8K 8K 166960K 396 0 pf 29 12K 17K 166960K 51 0 ifaddr 38 6K 7K 166960K 48 0 ifgroup 46 2K 2K 166960K 66 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 39 0 ioctlops 0 0K 4K 166960K 77 0 iov 0 0K 12K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1293 81K 82K 166960K 1549 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 18 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 97K 166960K 212 0 sigio 0 0K 0K 166960K 2 0 proc 59 59K 100K 166960K 501 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 8 0 in_multi 88 5K 6K 166960K 101 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 433 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 218 154K 159K 166960K 3531 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 38 76K 96K 166960K 1302 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 10 0K 2K 166960K 31 0 temp 36 9106K 9170K 166960K 11135 0 kqueue 14 22K 24K 166960K 40 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 44 0 40 1 0 1 1 0 8 0 rtentry 136 115 0 14 4 0 4 4 0 8 0 unpcb 144 95 0 74 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpcb 736 31 0 26 2 0 2 2 0 8 1 arp 96 18 0 2 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 1 1 0 1 1 0 8 0 inpcb 328 248 0 238 12 3 9 12 0 8 8 ip6q 72 1 0 1 1 0 1 1 0 8 1 ip6af 40 2 0 2 1 0 1 1 0 8 1 nd6 112 25 0 4 1 0 1 1 0 8 0 pkpcb 40 3 0 2 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 4 0 4 1 0 1 1 0 8 1 pfstscr 40 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 4 0 4 1 0 1 1 0 8 1 pfstkey 128 1 0 1 1 0 1 1 0 8 1 pfstate 384 1 0 1 1 0 1 1 0 8 1 pfrule 1360 3 0 3 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 454 0 46 29 0 29 29 0 8 1 art_table 40 457 0 46 5 0 5 5 0 8 0 art_node 32 115 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 14 0 4 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1835 0 380 92 0 92 92 0 8 0 ffsino 256 1835 0 380 92 0 92 92 0 8 0 nchpl 144 2138 0 444 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 1952 0 0 109 0 109 109 0 8 0 namei 1024 6559 0 6558 2 0 2 2 0 8 1 kstatmem 264 31 0 10 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 6855 0 6855 3 0 3 3 1 8 3 plimitpl 152 36 0 19 1 0 1 1 0 8 0 sigapl 424 504 0 462 6 0 6 6 0 8 1 knotepl 120 4985 0 4937 8 0 8 8 0 8 6 kqueuepl 184 49 0 38 1 0 1 1 0 8 0 pipepl 304 128 0 101 3 0 3 3 0 8 0 fdescpl 448 491 0 462 5 0 5 5 0 8 1 filepl 120 2453 0 2234 13 0 13 13 0 8 6 lockfpl 104 40 0 38 1 0 1 1 0 8 0 lockfspl 48 20 0 18 1 0 1 1 0 8 0 sessionpl 144 26 0 18 1 0 1 1 0 8 0 pgrppl 48 36 0 20 1 0 1 1 0 8 0 ucredpl 104 602 0 588 1 0 1 1 0 8 0 zombiepl 144 462 0 462 1 0 1 1 0 8 1 processpl 1152 504 0 462 4 0 4 4 0 8 0 procpl 664 640 0 588 5 0 5 5 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 397 0 360 12 2 10 12 0 8 7 mcl64k 65536 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 9 0 8 1 0 1 1 0 8 0 mcl4k 4096 2584 0 2532 15 0 15 15 0 8 8 mcl2k 2048 196 0 194 4 0 4 4 0 8 3 mextrefs 64 106 0 105 1 0 1 1 0 8 0 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 5139 0 4991 17 0 17 17 0 8 2 bufpl 272 2549 0 102 164 0 164 164 0 8 0 anonpl 24 93785 0 90642 22 0 22 22 0 187 1 amapchunkpl 152 9935 0 9469 21 0 21 21 0 158 1 amappl16 200 1597 0 1576 5 0 5 5 0 8 3 amappl15 192 58 0 58 1 0 1 1 0 8 1 amappl14 184 404 0 403 1 0 1 1 0 8 0 amappl13 176 130 0 120 1 0 1 1 0 8 0 amappl12 168 726 0 698 2 0 2 2 0 8 0 amappl11 160 1 0 1 1 0 1 1 0 8 1 amappl10 152 59 0 48 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 0 1 1 0 8 1 amappl8 136 94 0 93 1 0 1 1 0 8 0 amappl7 128 136 0 125 1 0 1 1 0 8 0 amappl6 120 149 0 148 1 0 1 1 0 8 0 amappl5 112 93 0 85 1 0 1 1 0 8 0 amappl4 104 262 0 244 1 0 1 1 0 8 0 amappl3 96 1785 0 1696 3 0 3 3 0 8 0 amappl2 88 604 0 534 2 0 2 2 0 8 0 amappl1 80 10358 0 9804 13 0 13 13 0 8 1 amappl 88 2829 0 2674 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 0 8 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 491 0 462 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 491 0 462 1 0 1 1 0 8 0 vmmpekpl 168 5854 0 5819 3 0 3 3 0 8 0 vmmpepl 168 40225 0 38465 80 0 80 80 0 357 1 vmsppl 368 490 0 462 4 0 4 4 0 8 1 rwobjpl 40 14592 0 13657 11 0 11 11 0 8 0 pdppl 4096 988 0 924 96 28 68 82 0 8 4 pvpl 32 230050 0 221256 76 0 76 76 0 265 2 pmappl 216 490 0 462 3 0 3 3 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 535 0 28 15 0 15 15 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000318bd450,0,ffff8000318bd3c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001611d00,ffff8000318bd4f8,ffff8000318bd450,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff60069588100,ffff800010fe1378) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1378,fffff60069588100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1378,0,ffff8000318bd6a8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a75b240,3,ffff8000318bd7a0,808,ffff8000318bd840) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a75b240,ffff8000318bd8f0,ffff8000318bd840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000318bd8f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000318bd8f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf1ef8505c80, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff6006d14d5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff8000318bd450,0,ffff8000318bd3c0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001611d00,ffff8000318bd4f8,ffff8000318bd450,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff60069588100,ffff800010fe1378) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1378,fffff60069588100,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1378,0,ffff8000318bd6a8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a75b240,3,ffff8000318bd7a0,808,ffff8000318bd840) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a75b240,ffff8000318bd8f0,ffff8000318bd840) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff8000318bd8f0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000318bd8f0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf1ef8505c80, count: -10