uvm_fault(0xffffffff83aef390, 0xffff8000016100aa, 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 *413693 6821 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8eeb20,0,ffff80003c8eea90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e200,ffff80003c8eebc8,ffff80003c8eeb20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1006d15aa00,ffff800001602460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602460,fffff1006d15aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602460,0,ffff80003c8eed78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a771ca0,8,ffff80003c8eee70,808,ffff80003c8eef10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a771ca0,ffff80003c8eefc0,ffff80003c8eef10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8eefc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8eefc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c4458e2300, 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(0xffffffff83aef390, 0xffff8000016100aa, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8eeb20,0,ffff80003c8eea90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e200,ffff80003c8eebc8,ffff80003c8eeb20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1006d15aa00,ffff800001602460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602460,fffff1006d15aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602460,0,ffff80003c8eed78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a771ca0,8,ffff80003c8eee70,808,ffff80003c8eef10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a771ca0,ffff80003c8eefc0,ffff80003c8eef10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8eefc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8eefc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c4458e2300, count: -10 ddb> show registers rdi 0xffff800035cd6000 rsi 0x949 rbp 0xffff80003c8ee970 rbx 0xde rdx 0xffff800035cd6000 rcx 0xffff80000160ffc0 rax 0xfffff1006d15a1e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0xe85e95066ab9abb1 r11 0xc44e498c6f0915ff r12 0x18 r13 0xfffff1006d15a100 r14 0xfffff1007ea04c50 r15 0xffff8000002a2058 rip 0xffffffff82b163a4 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c8ee8f0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=413693 pid=6821 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=0xffff80002a7707e0,0xffff80002a770a88 process=0xffff800045ffba98 user=0xffff80003c8ea000, vmspace=0xfffff1006cfde460 estcpu=18, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 83810 20440 76800 0 2 0 syz-executor 83810 98858 76800 0 2 0x4000000 syz-executor 55765 254727 92738 0 2 0 syz-executor 55765 90393 92738 0 3 0x4000080 fsleep syz-executor 22437 248830 55984 0 2 0 syz-executor 6821 162459 86994 0 2 0 syz-executor * 6821 413693 86994 0 7 0x4000000 syz-executor 62082 36904 62358 -1 2 0x10 syz-executor 62082 445653 62358 -1 3 0x4000090 fsleep syz-executor 57902 83038 3153 0 2 0 syz-executor 57902 177944 3153 0 2 0x4000000 syz-executor 57902 86053 3153 0 3 0x4000080 fsleep syz-executor 76800 398772 48627 0 2 0xc82 syz-executor 92738 205891 48627 0 2 0xc82 syz-executor 86994 58346 48627 0 3 0x82 nanoslp syz-executor 55984 397438 48627 0 2 0xc82 syz-executor 62358 472654 48627 0 3 0x82 nanoslp syz-executor 51303 268307 48627 0 2 0xc82 syz-executor 21856 132137 48627 0 2 0x2 syz-executor 3153 302520 48627 0 3 0x82 nanoslp syz-executor 48627 288615 3263 0 3 0x82 kqread syz-executor 3263 467671 3247 0 3 0x10008a sigsusp ksh 3247 461986 99473 0 3 0x98 kqread sshd-session 99473 186421 40065 0 3 0x92 kqread sshd-session 79481 66267 1 0 3 0x100083 ttyin getty 40065 291864 1 0 3 0x88 kqread sshd 64337 216716 78061 73 3 0x1100090 kqread syslogd 78061 52852 1 0 3 0x100082 sbwait syslogd 5574 21135 1 0 3 0x100080 kqread resolvd 9583 296129 91414 77 3 0x100092 kqread dhcpleased 46849 42606 91414 77 3 0x100092 kqread dhcpleased 91414 202695 1 0 3 0x80 kqread dhcpleased 54206 14955 0 0 3 0x14200 bored smr 80182 446081 0 0 2 0x14200 zerothread 95193 35723 0 0 3 0x14200 aiodoned aiodoned 57034 297886 0 0 3 0x14200 syncer update 31211 176492 0 0 3 0x14200 cleaner cleaner 52615 199962 0 0 3 0x14200 reaper reaper 25487 413638 0 0 3 0x14200 pgdaemon pagedaemon 41342 154507 0 0 3 0x14200 bored viomb 20383 215062 0 0 3 0x40014200 acpi0 acpi0 98419 197906 0 0 3 0x14200 bored softnet0 17032 513656 0 0 3 0x14200 smrbar systqmp 74957 468548 0 0 3 0x14200 bored systq 98949 419176 0 0 3 0x40014200 tmoslp softclock 15855 507691 0 0 3 0x40014200 idle0 1 336416 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 11027 12104K 12118K 166960K 12114 0 pcb 17 12K 12K 166960K 17 0 rtable 248 8K 8K 166960K 374 0 pf 32 13K 13K 166960K 32 0 ifaddr 43 7K 7K 166960K 45 0 ifgroup 52 2K 2K 166960K 52 0 sysctl 1 1K 9K 166960K 5 0 counters 34 17K 17K 166960K 34 0 ioctlops 0 0K 2K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1290 81K 81K 166960K 1355 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 15 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 138 0 proc 58 59K 91K 166960K 496 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 mrt 0 0K 0K 166960K 2 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 369 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 209 158K 167K 166960K 3032 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 95K 166960K 1248 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 0K 166960K 2 0 NDP 28 2K 2K 166960K 28 0 temp 35 9106K 9112K 166960K 3602 0 kqueue 16 22K 22K 166960K 28 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 41 0 36 1 0 1 1 0 8 0 rtentry 136 113 0 1 4 0 4 4 0 8 0 unpcb 144 38 0 23 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 12 0 5 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 65 0 52 2 0 2 2 0 8 0 nd6 112 25 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 1 0 0 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 454 0 0 29 0 29 29 0 8 0 art_table 40 456 0 0 5 0 5 5 0 8 0 art_node 32 113 0 4 1 0 1 1 0 8 0 dirhash 1024 19 0 0 3 0 3 3 0 8 0 dino2pl 256 1561 0 96 92 0 92 92 0 8 0 ffsino 256 1561 0 96 92 0 92 92 0 8 0 nchpl 144 1753 0 54 64 0 64 64 0 8 0 vnodes 216 1642 0 0 92 0 92 92 0 8 0 namei 1024 5175 0 5172 2 0 2 2 0 8 1 kstatmem 264 25 0 0 2 0 2 2 0 8 0 scxspl 216 5825 0 5825 4 0 4 4 1 8 4 plimitpl 152 29 0 12 1 0 1 1 0 8 0 sigapl 424 436 0 394 6 0 6 6 0 8 1 knotepl 120 2168 0 2119 2 0 2 2 0 8 0 kqueuepl 184 23 0 12 1 0 1 1 0 8 0 pipepl 304 124 0 97 3 0 3 3 0 8 0 fdescpl 448 423 0 394 5 0 5 5 0 8 1 filepl 120 1451 0 1235 7 0 7 7 0 8 0 lockfpl 104 8 0 4 1 0 1 1 0 8 0 lockfspl 48 6 0 2 1 0 1 1 0 8 0 sessionpl 144 23 0 15 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 80 0 68 1 0 1 1 0 8 0 zombiepl 144 395 0 394 1 0 1 1 0 8 0 processpl 1152 436 0 394 4 0 4 4 0 8 0 procpl 664 445 0 397 5 0 5 5 0 8 0 sockpl 552 144 0 111 3 0 3 3 0 8 0 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2454 0 2401 14 0 14 14 0 8 5 mcl2k 2048 114 0 114 1 0 1 1 0 8 1 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4150 0 4010 10 0 10 10 0 8 0 bufpl 272 2226 0 102 142 0 142 142 0 8 0 anonpl 24 78577 0 75644 20 0 20 20 0 187 1 amapchunkpl 152 7956 0 7527 18 0 18 18 0 158 0 amappl16 200 1086 0 1074 4 0 4 4 0 8 3 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 414 0 412 1 0 1 1 0 8 0 amappl13 176 119 0 109 1 0 1 1 0 8 0 amappl12 168 660 0 633 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 274 0 274 1 0 1 1 0 8 1 amappl8 136 94 0 93 1 0 1 1 0 8 0 amappl7 128 143 0 132 1 0 1 1 0 8 0 amappl6 120 148 0 147 1 0 1 1 0 8 0 amappl5 112 91 0 83 1 0 1 1 0 8 0 amappl4 104 262 0 247 1 0 1 1 0 8 0 amappl3 96 1377 0 1280 3 0 3 3 0 8 0 amappl2 88 524 0 470 2 0 2 2 0 8 0 amappl1 80 10139 0 9595 13 0 13 13 0 8 0 amappl 88 2332 0 2187 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 423 0 394 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 423 0 394 1 0 1 1 0 8 0 vmmpekpl 168 5371 0 5341 2 0 2 2 0 8 0 vmmpepl 168 35966 0 34249 77 0 77 77 0 357 0 vmsppl 368 422 0 394 4 0 4 4 0 8 1 rwobjpl 40 13487 0 12585 11 0 11 11 0 8 1 pdppl 4096 852 0 788 94 14 80 80 0 8 16 pvpl 32 199147 0 190995 69 0 69 69 0 265 2 pmappl 216 422 0 394 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 496 0 14 14 0 14 14 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8eeb20,0,ffff80003c8eea90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e200,ffff80003c8eebc8,ffff80003c8eeb20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1006d15aa00,ffff800001602460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602460,fffff1006d15aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602460,0,ffff80003c8eed78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a771ca0,8,ffff80003c8eee70,808,ffff80003c8eef10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a771ca0,ffff80003c8eefc0,ffff80003c8eef10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8eefc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8eefc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c4458e2300, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a2058,1,fffff1007ea04c50) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8eeb20,0,ffff80003c8eea90,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000160e200,ffff80003c8eebc8,ffff80003c8eeb20,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff1006d15aa00,ffff800001602460) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800001602460,fffff1006d15aa00,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800001602460,0,ffff80003c8eed78,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a771ca0,8,ffff80003c8eee70,808,ffff80003c8eef10) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a771ca0,ffff80003c8eefc0,ffff80003c8eef10) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8eefc0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8eefc0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9c4458e2300, count: -10