uvm_fault(0xffffffff8384fd60, 0xffff80000149706a, 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 * 38861 69476 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800039d19710,0,ffff800039d19680,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001494c00,ffff800039d197b8,ffff800039d19710,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8072dda700,ffff800010fd55b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fd55b0,fffffd8072dda700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd55b0,0,ffff800039d19968,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd770,4,ffff800039d19a60,808,ffff800039d19b00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd770,ffff800039d19bb0,ffff800039d19b00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800039d19bb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d19bb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf5e4600c7f0, 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(0xffffffff8384fd60, 0xffff80000149706a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800039d19710,0,ffff800039d19680,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001494c00,ffff800039d197b8,ffff800039d19710,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8072dda700,ffff800010fd55b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fd55b0,fffffd8072dda700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd55b0,0,ffff800039d19968,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd770,4,ffff800039d19a60,808,ffff800039d19b00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd770,ffff800039d19bb0,ffff800039d19b00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800039d19bb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d19bb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf5e4600c7f0, count: -10 ddb> show registers rdi 0xffff80002f0fc000 rsi 0x960 rbp 0xffff800039d19560 rbx 0xde rdx 0xffff80002f0fc000 rcx 0xffff800001496f80 rax 0xfffffd8072ddafe0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x453c7a2f6ee311d r11 0x6b68965d3a6fbc85 r12 0x19 r13 0xfffffd8072ddaf00 r14 0xfffffd806c3bc5f0 r15 0xffff800000039058 rip 0xffffffff8288e484 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800039d194e0 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=38861 pid=69476 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=0xffff80002a7cc548,0xffff80003c94a560 process=0xffff8000ffffad18 user=0xffff800039d14000, vmspace=0xfffffd806c224d00 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8808 292032 85871 0 2 0 syz-executor 8808 69194 85871 0 2 0x4000000 syz-executor 69476 514374 28358 0 2 0 syz-executor *69476 38861 28358 0 7 0x4000000 syz-executor 92491 438687 39216 0 2 0x4000000 syz-executor 92491 11340 39216 0 3 0x4000080 fsleep syz-executor 7140 102179 60065 0 2 0 syz-executor 7140 379994 60065 0 3 0x4000080 fsleep syz-executor 67485 396641 88093 0 2 0 syz-executor 67485 223679 88093 0 3 0x4000080 nanoslp syz-executor 43624 340463 58064 0 3 0x80 nanoslp syz-executor 43624 95241 58064 0 3 0x4000080 kqread syz-executor 43624 65996 58064 0 3 0x4000080 fsleep syz-executor 1564 280065 41775 0 3 0x82 nanoslp syz-executor 39216 384260 41775 0 3 0x82 nanoslp syz-executor 58064 365779 41775 0 3 0x82 nanoslp syz-executor 60065 256033 41775 0 3 0x82 nanoslp syz-executor 88093 415674 41775 0 3 0x82 nanoslp syz-executor 28358 418399 41775 0 3 0x82 nanoslp syz-executor 85871 145356 41775 0 3 0x82 nanoslp syz-executor 78476 491153 41775 0 2 0x2 syz-executor 41775 288194 18787 0 3 0x82 kqread syz-executor 18787 474234 41359 0 3 0x10008a sigsusp ksh 41359 415873 45304 0 3 0x98 kqread sshd-session 45304 344182 40788 0 3 0x92 kqread sshd-session 15800 407345 1 0 3 0x100083 ttyin getty 40788 353597 1 0 3 0x88 kqread sshd 9082 445928 10707 73 3 0x1100090 kqread syslogd 10707 335739 1 0 3 0x100082 sbwait syslogd 35238 141323 1 0 3 0x100080 kqread resolvd 17143 30401 10655 77 3 0x100092 kqread dhcpleased 92900 198562 10655 77 3 0x100092 kqread dhcpleased 10655 242402 1 0 3 0x80 kqread dhcpleased 65695 441222 0 0 3 0x14200 bored smr 31552 468004 0 0 2 0x14200 zerothread 9375 377475 0 0 3 0x14200 aiodoned aiodoned 41455 494473 0 0 3 0x14200 syncer update 56631 365516 0 0 3 0x14200 cleaner cleaner 17240 2360 0 0 3 0x14200 reaper reaper 92648 209297 0 0 3 0x14200 pgdaemon pagedaemon 98277 154963 0 0 3 0x14200 bored viomb 49232 233109 0 0 3 0x40014200 acpi0 acpi0 1604 51525 0 0 2 0x14200 softnet0 58187 186047 0 0 3 0x14200 bored systqmp 18399 96767 0 0 3 0x14200 bored systq 38204 160709 0 0 3 0x40014200 tmoslp softclock 90719 65335 0 0 3 0x40014200 idle0 1 4804 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 10174 11057K 11347K 166960K 11364 0 pcb 17 13K 14K 166960K 71 0 rtable 246 8K 8K 166960K 370 0 pf 30 12K 16K 166960K 34 0 ifaddr 42 7K 7K 166960K 44 0 ifgroup 50 2K 2K 166960K 50 0 sysctl 1 1K 9K 166960K 5 0 counters 32 17K 17K 166960K 32 0 ioctlops 0 0K 4K 166960K 34 0 iov 0 0K 0K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1439 91K 91K 166960K 1477 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 3 0K 0K 166960K 35 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 165 0 proc 57 58K 116K 166960K 475 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 100 0 ether_multi 1 0K 0K 166960K 1 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 423 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 225 159K 166K 166960K 3198 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 38 76K 96K 166960K 1233 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 2 0 NDP 27 2K 2K 166960K 27 0 temp 34 8638K 8702K 166960K 4618 0 kqueue 13 20K 22K 166960K 26 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 42 0 37 1 0 1 1 0 8 0 rtentry 136 112 0 1 4 0 4 4 0 8 0 unpcb 144 47 0 32 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 79 0 75 7 0 7 7 0 8 6 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 176 0 166 7 0 7 7 0 8 6 nd6 112 24 0 0 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 pfrule 1344 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 452 0 0 29 0 29 29 0 8 0 art_table 40 454 0 0 5 0 5 5 0 8 0 art_node 32 112 0 11 1 0 1 1 0 8 0 semapl 112 33 0 32 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1607 0 97 95 0 95 95 0 8 0 ffsino 256 1608 0 97 95 0 95 95 0 8 0 nchpl 144 1834 0 143 63 0 63 63 0 8 0 vnodes 216 1801 0 0 101 0 101 101 0 8 0 namei 1024 5597 0 5594 2 0 2 2 0 8 1 kstatmem 264 22 0 0 2 0 2 2 0 8 0 scxspl 216 5753 0 5753 2 0 2 2 1 8 2 plimitpl 152 32 0 15 1 0 1 1 0 8 0 sigapl 424 451 0 409 6 0 6 6 0 8 1 knotepl 120 4061 0 4014 10 0 10 10 0 8 8 kqueuepl 184 23 0 12 1 0 1 1 0 8 0 pipepl 304 114 0 87 3 0 3 3 0 8 0 fdescpl 448 438 0 409 5 0 5 5 0 8 1 filepl 120 1726 0 1503 10 0 10 10 0 8 1 lockfpl 104 155 0 153 2 0 2 2 0 8 1 lockfspl 48 77 0 75 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 102 0 91 1 0 1 1 0 8 0 zombiepl 144 410 0 409 1 0 1 1 0 8 0 processpl 1152 451 0 409 4 0 4 4 0 8 0 procpl 664 498 0 449 5 0 5 5 0 8 0 sockpl 552 266 0 236 7 0 7 7 0 8 4 mcl64k 65536 68 0 68 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2502 0 2448 16 1 15 16 0 8 8 mcl2k 2048 247 0 245 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4542 0 4405 10 0 10 10 0 8 1 bufpl 280 2290 0 119 156 0 156 156 0 8 0 anonpl 24 104135 0 101112 23 0 23 23 0 187 3 amapchunkpl 152 9078 0 8608 20 0 20 20 0 158 0 amappl16 200 2169 0 2147 5 0 5 5 0 8 3 amappl15 192 3 0 3 1 0 1 1 0 8 1 amappl14 184 9 0 9 1 0 1 1 0 8 1 amappl13 176 404 0 403 1 0 1 1 0 8 0 amappl12 168 778 0 740 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 46 0 35 1 0 1 1 0 8 0 amappl9 144 242 0 242 1 0 1 1 0 8 1 amappl8 136 26 0 25 1 0 1 1 0 8 0 amappl7 128 91 0 90 1 0 1 1 0 8 0 amappl6 120 295 0 284 1 0 1 1 0 8 0 amappl5 112 80 0 73 1 0 1 1 0 8 0 amappl4 104 378 0 355 1 0 1 1 0 8 0 amappl3 96 1404 0 1314 3 0 3 3 0 8 0 amappl2 88 556 0 489 2 0 2 2 0 8 0 amappl1 80 8831 0 8291 13 0 13 13 0 8 1 amappl 88 2500 0 2344 4 0 4 4 0 92 0 uvmvnodes 80 1801 0 0 37 0 37 37 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 24 438 0 409 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 438 0 409 1 0 1 1 0 8 0 vmmpekpl 168 5228 0 5201 2 0 2 2 0 8 0 vmmpepl 168 36414 0 34651 80 0 80 80 0 357 0 vmsppl 368 437 0 409 4 0 4 4 0 8 1 rwobjpl 40 15252 0 12628 27 0 27 27 0 8 0 pdppl 4096 883 0 818 97 14 83 83 0 8 18 pvpl 32 225169 0 216515 79 0 79 79 0 265 8 pmappl 216 437 0 409 3 0 3 3 0 8 1 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 372 0 15 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800039d19710,0,ffff800039d19680,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001494c00,ffff800039d197b8,ffff800039d19710,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8072dda700,ffff800010fd55b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fd55b0,fffffd8072dda700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd55b0,0,ffff800039d19968,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd770,4,ffff800039d19a60,808,ffff800039d19b00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd770,ffff800039d19bb0,ffff800039d19b00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800039d19bb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d19bb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf5e4600c7f0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806c3bc5f0) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff800039d19710,0,ffff800039d19680,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001494c00,ffff800039d197b8,ffff800039d19710,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd8072dda700,ffff800010fd55b0) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff800010fd55b0,fffffd8072dda700,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fd55b0,0,ffff800039d19968,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd770,4,ffff800039d19a60,808,ffff800039d19b00) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd770,ffff800039d19bb0,ffff800039d19b00) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff800039d19bb0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800039d19bb0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf5e4600c7f0, count: -10