uvm_fault(0xffffffff838529f8, 0xffff80000149406a, 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 *360069 34123 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9579a0,0,ffff80003c957910,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001486600,ffff80003c957a48,ffff80003c9579a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d3e5600,ffff80000141dc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000141dc10,fffffd800d3e5600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000141dc10,0,ffff80003c957bf8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd4d8,3,ffff80003c957cf0,808,ffff80003c957d90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd4d8,ffff80003c957e40,ffff80003c957d90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c957e40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957e40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x89a8fc87b20, 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(0xffffffff838529f8, 0xffff80000149406a, 0, 1) -> e ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9579a0,0,ffff80003c957910,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001486600,ffff80003c957a48,ffff80003c9579a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d3e5600,ffff80000141dc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000141dc10,fffffd800d3e5600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000141dc10,0,ffff80003c957bf8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd4d8,3,ffff80003c957cf0,808,ffff80003c957d90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd4d8,ffff80003c957e40,ffff80003c957d90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c957e40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957e40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x89a8fc87b20, count: -10 ddb> show registers rdi 0xffff80002ccfc000 rsi 0x8d9 rbp 0xffff80003c9577f0 rbx 0xde rdx 0xffff80002ccfc000 rcx 0xffff800001493f80 rax 0xfffffd800d3e5ce0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x2d5321f91b134e04 r11 0x4f3119ebdf1284bb r12 0x1b r13 0xfffffd800d3e5c00 r14 0xfffffd806fc85458 r15 0xffff800000039058 rip 0xffffffff82ecf214 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c957770 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=360069 pid=34123 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=0xffff80002a7ccd10,0xffff80003c94b4f0 process=0xffff8000ffff8918 user=0xffff80003c952000, vmspace=0xfffffd80752f0b98 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 77748 316733 71339 0 2 0 syz-executor 50326 26830 13503 0 2 0 syz-executor 76696 234374 31245 0 2 0 syz-executor 76696 307494 31245 0 3 0x4000080 fsleep syz-executor 34123 453718 17636 0 2 0 syz-executor *34123 360069 17636 0 7 0x4000000 syz-executor 70099 44901 15266 0 2 0 syz-executor 70099 247316 15266 0 3 0x4000080 fsleep syz-executor 10729 53093 29491 0 2 0 syz-executor 10729 8537 29491 0 2 0x4000000 syz-executor 46222 314830 43062 0 2 0 syz-executor 46222 277030 43062 0 2 0x4000000 syz-executor 28381 9089 49149 0 2 0 syz-executor 28381 466858 49149 0 3 0x4000080 fsleep syz-executor 15266 284744 4932 0 3 0x82 nanoslp syz-executor 31245 123268 4932 0 2 0xc82 syz-executor 29491 98538 4932 0 3 0x82 nanoslp syz-executor 43062 313788 4932 0 3 0x82 nanoslp syz-executor 13503 99412 4932 0 2 0xc82 syz-executor 49149 309141 4932 0 3 0x82 nanoslp syz-executor 17636 310744 4932 0 3 0x82 nanoslp syz-executor 71339 314637 4932 0 3 0x82 nanoslp syz-executor 4932 3507 9524 0 3 0x82 kqread syz-executor 9524 454163 80593 0 3 0x10008a sigsusp ksh 80593 336516 24482 0 3 0x98 kqread sshd-session 24482 402563 76499 0 3 0x92 kqread sshd-session 85832 461893 1 0 3 0x100083 ttyin getty 76499 280071 1 0 3 0x88 kqread sshd 94508 131187 56490 73 3 0x1100090 kqread syslogd 56490 142810 1 0 3 0x100082 sbwait syslogd 63132 430040 1 0 3 0x100080 kqread resolvd 52040 150121 74210 77 3 0x100092 kqread dhcpleased 69283 507468 74210 77 3 0x100092 kqread dhcpleased 74210 467437 1 0 3 0x80 kqread dhcpleased 97706 511949 0 0 3 0x14200 bored smr 93247 155262 0 0 2 0x14200 zerothread 20872 457705 0 0 3 0x14200 aiodoned aiodoned 67475 471007 0 0 3 0x14200 syncer update 71373 426839 0 0 3 0x14200 cleaner cleaner 14971 45220 0 0 3 0x14200 reaper reaper 60259 268961 0 0 3 0x14200 pgdaemon pagedaemon 97425 45417 0 0 3 0x14200 bored viomb 72919 143715 0 0 3 0x40014200 acpi0 acpi0 85309 518435 0 0 3 0x14200 bored softnet0 13627 491005 0 0 3 0x14200 smrbar systqmp 85424 31569 0 0 3 0x14200 bored systq 52943 65383 0 0 3 0x40014200 tmoslp softclock 51624 332454 0 0 3 0x40014200 idle0 1 199909 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 10165 11048K 11053K 166960K 11256 0 pcb 17 12K 12K 166960K 18 0 rtable 248 8K 8K 166960K 376 0 pf 30 12K 12K 166960K 33 0 ifaddr 42 7K 7K 166960K 46 0 ifgroup 50 2K 2K 166960K 55 0 sysctl 1 1K 9K 166960K 5 0 counters 32 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 1336 84K 84K 166960K 1360 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 3 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 148 0 proc 59 59K 83K 166960K 473 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 100 0 ether_multi 1 0K 0K 166960K 2 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 37 175K 175K 166960K 37 0 exec 0 0K 1K 166960K 359 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 208 150K 158K 166960K 2963 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 39 78K 92K 166960K 1226 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 17 0K 1K 166960K 28 0 temp 34 8634K 8698K 166960K 3804 0 kqueue 13 20K 22K 166960K 25 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 2 4 0 4 4 0 8 0 unpcb 144 38 0 23 1 0 1 1 0 8 0 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 68 0 61 1 0 1 1 0 8 0 nd6 112 24 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 1 1 0 1 1 0 8 1 pppxif 1384 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 256 459 0 0 29 0 29 29 0 8 0 art_table 40 461 0 0 5 0 5 5 0 8 0 art_node 32 113 0 8 1 0 1 1 0 8 0 semapl 112 1 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1565 0 61 95 0 95 95 0 8 1 ffsino 256 1565 0 61 95 0 95 95 0 8 0 nchpl 144 1762 0 77 63 0 63 63 0 8 0 vnodes 216 1649 0 0 92 0 92 92 0 8 0 namei 1024 5150 0 5150 2 0 2 2 0 8 2 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 5609 0 5609 3 0 3 3 1 8 3 plimitpl 152 29 0 13 1 0 1 1 0 8 0 sigapl 424 437 0 394 6 0 6 6 0 8 0 knotepl 120 2906 0 2859 3 0 3 3 0 8 1 kqueuepl 184 87 0 78 4 0 4 4 0 8 3 pipepl 304 114 0 86 3 0 3 3 0 8 0 fdescpl 448 424 0 394 5 0 5 5 0 8 1 filepl 120 1473 0 1266 9 0 9 9 0 8 2 lockfpl 104 8 0 6 1 0 1 1 0 8 0 lockfspl 48 5 0 3 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 75 0 64 1 0 1 1 0 8 0 zombiepl 144 394 0 394 1 0 1 1 0 8 1 processpl 1152 437 0 394 4 0 4 4 0 8 0 procpl 664 457 0 408 5 0 5 5 0 8 0 sockpl 552 145 0 119 3 0 3 3 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2462 0 2410 13 0 13 13 0 8 4 mcl2k 2048 203 0 201 1 0 1 1 0 8 0 mtagpl 96 4 0 4 1 0 1 1 0 8 1 mbufpl 256 4124 0 3977 10 0 10 10 0 8 0 bufpl 280 2254 0 119 153 0 153 153 0 8 0 anonpl 24 99571 0 96682 23 0 23 23 0 187 4 amapchunkpl 152 8365 0 7938 17 0 17 17 0 158 0 amappl16 200 1926 0 1911 5 0 5 5 0 8 4 amappl15 192 4 0 4 1 0 1 1 0 8 1 amappl14 184 6 0 6 1 0 1 1 0 8 1 amappl13 176 405 0 404 1 0 1 1 0 8 0 amappl12 168 764 0 727 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 0 1 1 0 8 1 amappl10 152 56 0 46 1 0 1 1 0 8 0 amappl9 144 259 0 259 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 83 0 82 1 0 1 1 0 8 0 amappl6 120 260 0 249 1 0 1 1 0 8 0 amappl5 112 69 0 62 1 0 1 1 0 8 0 amappl4 104 375 0 350 1 0 1 1 0 8 0 amappl3 96 1300 0 1219 2 0 2 2 0 8 0 amappl2 88 541 0 471 2 0 2 2 0 8 0 amappl1 80 8913 0 8373 12 0 12 12 0 8 0 amappl 88 2265 0 2125 4 0 4 4 0 92 0 uvmvnodes 80 1649 0 0 34 0 34 34 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 24 424 0 394 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 424 0 394 1 0 1 1 0 8 0 vmmpekpl 168 5129 0 5101 2 0 2 2 0 8 0 vmmpepl 168 35309 0 33546 79 0 79 79 0 357 2 vmsppl 368 423 0 394 4 0 4 4 0 8 1 rwobjpl 40 14762 0 12311 26 0 26 26 0 8 0 pdppl 4096 854 0 788 92 20 72 78 0 8 6 pvpl 32 214878 0 207042 66 0 66 66 0 265 2 pmappl 216 423 0 394 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 357 0 20 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9579a0,0,ffff80003c957910,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001486600,ffff80003c957a48,ffff80003c9579a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d3e5600,ffff80000141dc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000141dc10,fffffd800d3e5600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000141dc10,0,ffff80003c957bf8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd4d8,3,ffff80003c957cf0,808,ffff80003c957d90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd4d8,ffff80003c957e40,ffff80003c957d90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c957e40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957e40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x89a8fc87b20, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff800000039058,1,fffffd806fc85458) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c9579a0,0,ffff80003c957910,16) at rtrequest+0xf08 sys/net/route.c:1114 rtm_output(ffff800001486600,ffff80003c957a48,ffff80003c9579a0,0,16) at rtm_output+0x91a sys/net/rtsock.c:953 route_output(fffffd800d3e5600,ffff80000141dc10) at route_output+0xa2b sys/net/rtsock.c:858 route_send(ffff80000141dc10,fffffd800d3e5600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff80000141dc10,0,ffff80003c957bf8,0,0,808) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff80002a7cd4d8,3,ffff80003c957cf0,808,ffff80003c957d90) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff80002a7cd4d8,ffff80003c957e40,ffff80003c957d90) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c957e40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c957e40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x89a8fc87b20, count: -10