uvm_fault(0xffffffff83a1e728, 0xffff80000160b08a, 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 *354213 964 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8e7040,0,ffff80003c8e6fb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001606600,ffff80003c8e70e8,ffff80003c8e7040,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8072b01900,ffff800010fc2918) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fc2918,fffffd8072b01900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fc2918,0,ffff80003c8e7298,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8f1cb0,3,ffff80003c8e7390,808,ffff80003c8e7430) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8f1cb0,ffff80003c8e74e0,ffff80003c8e7430) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8e74e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e74e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa427e6a3a0, 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(0xffffffff83a1e728, 0xffff80000160b08a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8e7040,0,ffff80003c8e6fb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001606600,ffff80003c8e70e8,ffff80003c8e7040,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8072b01900,ffff800010fc2918) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fc2918,fffffd8072b01900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fc2918,0,ffff80003c8e7298,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8f1cb0,3,ffff80003c8e7390,808,ffff80003c8e7430) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8f1cb0,ffff80003c8e74e0,ffff80003c8e7430) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8e74e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e74e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa427e6a3a0, count: -10 ddb> show registers rdi 0xffff80002f4b2000 rsi 0x97d rbp 0xffff80003c8e6e90 rbx 0xde rdx 0xffff80002f4b2000 rcx 0xffff80000160afa0 rax 0xfffffd8072b01ee0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x265a524d87920e29 r11 0x29881ce3d2bce04a r12 0x19 r13 0xfffffd8072b01e00 r14 0xfffffd806d299a30 r15 0xffff8000002a2058 rip 0xffffffff811410a4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c8e6e10 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=354213 pid=964 tcnt=3 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=0xffff80003c8f0fb8,0xffffffff83a132a0 process=0xffff8000ffff8d98 user=0xffff80003c8e2000, vmspace=0xfffffd806d644740 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 21834 21334 83979 0 2 0 syz-executor 21834 86141 83979 0 3 0x4000080 fsleep syz-executor 21834 244507 83979 0 3 0x4000080 fsleep syz-executor 964 299799 4964 0 2 0 syz-executor 964 180761 4964 0 3 0x4000080 kqpoll syz-executor * 964 354213 4964 0 7 0x4000000 syz-executor 71810 417328 37725 0 2 0xc80 syz-executor 71810 228663 37725 0 2 0x4000c80 syz-executor 71810 260694 37725 0 3 0x4000080 fsleep syz-executor 80601 447889 75805 0 2 0xc80 syz-executor 80601 170137 75805 0 3 0x4000080 fsleep syz-executor 80601 365142 75805 0 3 0x4000080 sbwait syz-executor 80601 156967 75805 0 3 0x4000080 fsleep syz-executor 59629 215069 74911 0 2 0 syz-executor 59629 274857 74911 0 3 0x4000080 msgwait syz-executor 59629 139171 74911 0 3 0x4000080 fsleep syz-executor 62837 491041 27704 0 2 0xc80 syz-executor 62837 201254 27704 0 3 0x4000080 rest syz-executor 62837 415977 27704 0 3 0x4000080 fsleep syz-executor 6897 426648 56347 0 2 0xc80 syz-executor 6897 96023 56347 0 3 0x4000080 ttyout syz-executor 6897 290686 56347 0 3 0x4000080 ttyout syz-executor 6897 405985 56347 0 3 0x4000080 ttyout syz-executor 6897 442963 56347 0 3 0x4000080 fsleep syz-executor 83979 399404 26265 0 2 0xc82 syz-executor 37725 184390 26265 0 2 0xc82 syz-executor 56347 424984 26265 0 3 0x82 nanoslp syz-executor 74911 340291 26265 0 2 0xc82 syz-executor 69807 135327 26265 0 2 0x2 syz-executor 4964 203090 26265 0 2 0xc82 syz-executor 27704 372672 26265 0 3 0x82 nanoslp syz-executor 75805 370095 26265 0 2 0xc82 syz-executor 26265 161695 74106 0 3 0x82 kqread syz-executor 74106 315812 49708 0 3 0x10008a sigsusp ksh 49708 175681 99358 0 3 0x98 kqread sshd-session 99358 264466 70842 0 3 0x92 kqread sshd-session 56903 446591 1 0 3 0x100083 ttyopn getty 70842 365936 1 0 3 0x88 kqread sshd 94709 352552 50616 73 3 0x1100090 kqread syslogd 50616 426968 1 0 3 0x100082 sbwait syslogd 4449 126605 1 0 3 0x100080 kqread resolvd 54492 492653 73193 77 3 0x100092 kqread dhcpleased 94908 273834 73193 77 3 0x100092 kqread dhcpleased 73193 15828 1 0 3 0x80 kqread dhcpleased 49810 265370 0 0 3 0x14200 bored smr 80553 502431 0 0 2 0x14200 zerothread 55259 338165 0 0 3 0x14200 aiodoned aiodoned 64357 319724 0 0 3 0x14200 syncer update 22173 123706 0 0 3 0x14200 cleaner cleaner 55752 421672 0 0 3 0x14200 reaper reaper 31117 217763 0 0 3 0x14200 pgdaemon pagedaemon 18480 459052 0 0 3 0x14200 bored viomb 33232 258643 0 0 3 0x40014200 acpi0 acpi0 45746 405906 0 0 3 0x14200 bored softnet0 86806 408423 0 0 3 0x14200 bored systqmp 19405 424293 0 0 3 0x14200 bored systq 30231 30327 0 0 3 0x40014200 tmoslp softclock 20155 450601 0 0 3 0x40014200 idle0 1 82472 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 11037 12104K 12319K 166960K 12291 0 pcb 18 14K 16K 166960K 104 0 rtable 254 8K 8K 166960K 388 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 33 17K 17K 166960K 33 0 ioctlops 0 0K 2K 166960K 36 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1358 85K 86K 166960K 1451 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 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 168 0 proc 60 59K 116K 166960K 505 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 4 0 in_multi 99 7K 7K 166960K 99 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 430 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 236 143K 149K 166960K 3303 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 94K 166960K 1249 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 27 0 temp 40 9090K 9154K 166960K 7413 0 kqueue 13 20K 24K 166960K 30 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 39 0 35 1 0 1 1 0 8 0 rtentry 136 113 0 1 4 0 4 4 0 8 0 unpcb 144 181 0 162 6 0 6 6 0 8 5 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 15 0 11 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 153 0 145 7 0 7 7 0 8 6 ip6q 72 2 0 0 1 0 1 1 0 8 0 ip6af 40 3 0 0 1 0 1 1 0 8 0 nd6 112 25 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 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 256 455 0 0 29 0 29 29 0 8 0 art_table 40 457 0 0 5 0 5 5 0 8 0 art_node 32 113 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1621 0 161 92 0 92 92 0 8 0 ffsino 256 1621 0 161 92 0 92 92 0 8 0 nchpl 144 1867 0 172 63 0 63 63 0 8 0 vnodes 216 1785 0 0 100 0 100 100 0 8 0 namei 1024 5666 0 5665 2 0 2 2 0 8 1 kstatmem 264 23 0 0 2 0 2 2 0 8 0 scxspl 216 6737 0 6737 2 0 2 2 1 8 2 plimitpl 152 37 0 17 1 0 1 1 0 8 0 sigapl 424 458 0 416 6 0 6 6 0 8 1 knotepl 120 4643 0 4596 7 0 7 7 0 8 5 kqueuepl 184 30 0 20 1 0 1 1 0 8 0 pipepl 304 120 0 93 3 0 3 3 0 8 0 fdescpl 448 445 0 416 5 0 5 5 0 8 1 filepl 120 1900 0 1610 14 0 14 14 0 8 4 lockfpl 104 23 0 21 1 0 1 1 0 8 0 lockfspl 48 12 0 10 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 35 0 19 1 0 1 1 0 8 0 ucredpl 104 129 0 118 1 0 1 1 0 8 0 zombiepl 144 416 0 416 1 0 1 1 0 8 1 processpl 1152 458 0 416 4 0 4 4 0 8 0 procpl 664 525 0 466 6 0 6 6 0 8 0 sockpl 552 374 0 343 16 0 16 16 0 8 13 mcl64k 65536 5 0 4 1 0 1 1 0 8 0 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2503 0 2449 15 0 15 15 0 8 8 mcl2k 2048 195 0 127 9 0 9 9 0 8 0 mtagpl 96 6 0 5 1 0 1 1 0 8 0 mbufpl 256 4472 0 4202 17 0 17 17 0 8 0 bufpl 280 2564 0 102 176 0 176 176 0 8 0 anonpl 24 98614 0 95385 27 0 27 27 0 186 1 amapchunkpl 152 9226 0 8704 21 0 21 21 0 158 0 amappl16 200 1821 0 1798 5 0 5 5 0 8 1 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 409 0 408 1 0 1 1 0 8 0 amappl13 176 123 0 113 1 0 1 1 0 8 0 amappl12 168 680 0 652 2 0 2 2 0 8 0 amappl11 160 37 0 37 1 0 1 1 0 8 1 amappl10 152 62 0 52 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 0 1 1 0 8 1 amappl8 136 100 0 99 1 0 1 1 0 8 0 amappl7 128 138 0 127 1 0 1 1 0 8 0 amappl6 120 165 0 164 1 0 1 1 0 8 0 amappl5 112 88 0 80 1 0 1 1 0 8 0 amappl4 104 255 0 240 1 0 1 1 0 8 0 amappl3 96 1582 0 1465 3 0 3 3 0 8 0 amappl2 88 501 0 448 2 0 2 2 0 8 0 amappl1 80 9183 0 8631 13 0 13 13 0 8 0 amappl 88 2614 0 2439 5 0 5 5 0 92 1 uvmvnodes 80 98 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 445 0 416 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 445 0 416 1 0 1 1 0 8 0 vmmpekpl 168 5280 0 5249 2 0 2 2 0 8 0 vmmpepl 168 36861 0 35065 85 0 85 85 0 357 3 vmsppl 368 444 0 416 4 0 4 4 0 8 1 rwobjpl 40 13571 0 12608 11 0 11 11 0 8 0 pdppl 4096 896 0 832 94 14 80 80 0 8 16 pvpl 32 224123 0 215076 88 0 88 88 0 265 4 pmappl 216 444 0 416 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 371 0 14 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8e7040,0,ffff80003c8e6fb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001606600,ffff80003c8e70e8,ffff80003c8e7040,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8072b01900,ffff800010fc2918) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fc2918,fffffd8072b01900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fc2918,0,ffff80003c8e7298,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8f1cb0,3,ffff80003c8e7390,808,ffff80003c8e7430) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8f1cb0,ffff80003c8e74e0,ffff80003c8e7430) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8e74e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e74e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa427e6a3a0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffffd806d299a30) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8e7040,0,ffff80003c8e6fb0,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff800001606600,ffff80003c8e70e8,ffff80003c8e7040,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffffd8072b01900,ffff800010fc2918) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fc2918,fffffd8072b01900,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fc2918,0,ffff80003c8e7298,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80003c8f1cb0,3,ffff80003c8e7390,808,ffff80003c8e7430) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80003c8f1cb0,ffff80003c8e74e0,ffff80003c8e7430) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8e74e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e74e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xfa427e6a3a0, count: -10