uvm_fault(0xffffffff839c4318, 0xffff80000168106a, 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 *163678 12802 0 0 0x4000000 0 syz-executor arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f8ca0,0,ffff80003c8f8c10,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000166af00,ffff80003c8f8d48,ffff80003c8f8ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8807ec39600,ffff800010fe1368) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1368,fffff8807ec39600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1368,0,ffff80003c8f8ef8,0,0,0) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800036cc5ca8,3,ffff80003c8f8ff0,0,ffff80003c8f9090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800036cc5ca8,ffff80003c8f9140,ffff80003c8f9090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f9140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f9140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8034d928990, 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(0xffffffff839c4318, 0xffff80000168106a, 0, 1) -> e ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f8ca0,0,ffff80003c8f8c10,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000166af00,ffff80003c8f8d48,ffff80003c8f8ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8807ec39600,ffff800010fe1368) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1368,fffff8807ec39600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1368,0,ffff80003c8f8ef8,0,0,0) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800036cc5ca8,3,ffff80003c8f8ff0,0,ffff80003c8f9090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800036cc5ca8,ffff80003c8f9140,ffff80003c8f9090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f9140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f9140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8034d928990, count: -10 ddb> show registers rdi 0x20 rsi 0x90 rbp 0xffff80003c8f8af0 rbx 0xde rdx 0 rcx 0xffff800001680f80 rax 0xfffff8806ed267e0 r8 0x1000 __ALIGN_SIZE r9 0 r10 0x61abccb92abb9377 r11 0xe5d2e6e7f60ccf9 r12 0x1b r13 0xfffff8806ed26700 r14 0xfffff8806cc30ab8 r15 0xffff8000002a3058 rip 0xffffffff8116d924 arp_rtrequest+0x6a4 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c8f8a70 ss 0x10 arp_rtrequest+0x6a4: movzwl 0xc(%rcx,%rbx,1),%ecx ddb> show proc PROC (syz-executor) tid=163678 pid=12802 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=0xffff800036cc4d18,0xffffffff839c26e8 process=0xffff800045ff68a0 user=0xffff80003c8f4000, vmspace=0xfffff8806cfd0010 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 12802 184678 41776 0 2 0 syz-executor *12802 163678 41776 0 7 0x4000000 syz-executor 91855 485621 82195 0 2 0xc80 syz-executor 91855 458976 82195 0 2 0x4000000 syz-executor 91855 148492 82195 0 3 0x4000080 fsleep syz-executor 84913 219026 71571 0 2 0 syz-executor 84913 285186 71571 0 2 0x4000000 syz-executor 12046 485353 75019 0 2 0 syz-executor 12046 222206 75019 0 3 0x4000080 msgwait syz-executor 12046 365239 75019 0 3 0x4000080 msgwait syz-executor 12046 355925 75019 0 3 0x4000080 fifor syz-executor 64860 158034 6232 0 2 0 syz-executor 64860 257793 6232 0 3 0x4000080 sbwait syz-executor 64860 294764 6232 0 3 0x4000080 fsleep syz-executor 67129 377267 84552 0 2 0xc80 syz-executor 67129 239853 84552 0 3 0x4000088 kqread syz-executor 37269 143058 66808 0 2 0xc80 syz-executor 37269 316319 66808 0 3 0x4000080 lockf syz-executor 37269 516340 66808 0 3 0x4000080 fsleep syz-executor 50477 86897 0 0 3 0x14280 nfsidl nfsio 4638 301901 0 0 3 0x14280 nfsidl nfsio 66464 31333 0 0 3 0x14280 nfsidl nfsio 60567 289307 0 0 3 0x14280 nfsidl nfsio 73170 158554 0 0 3 0x14280 nfsidl nfsio 48947 349490 0 0 3 0x14280 nfsidl nfsio 841 269364 0 0 3 0x14280 nfsidl nfsio 1898 402172 0 0 3 0x14280 nfsidl nfsio 66265 276107 0 0 3 0x14280 nfsidl nfsio 18128 291438 0 0 3 0x14280 nfsidl nfsio 86588 301094 0 0 3 0x14280 nfsidl nfsio 32848 174841 0 0 3 0x14280 nfsidl nfsio 10681 119339 0 0 3 0x14280 nfsidl nfsio 91126 424814 0 0 3 0x14280 nfsidl nfsio 9218 256849 0 0 3 0x14280 nfsidl nfsio 25371 47543 0 0 3 0x14280 nfsidl nfsio 15723 38703 0 0 3 0x14280 nfsidl nfsio 53287 160683 0 0 3 0x14280 nfsidl nfsio 77807 100611 0 0 3 0x14280 nfsidl nfsio 69743 257582 0 0 3 0x14280 nfsidl nfsio 78540 443511 0 0 3 0x14200 acct acct 6232 298305 95018 0 2 0xc82 syz-executor 75019 453892 95018 0 2 0xc82 syz-executor 71571 476154 95018 0 2 0xc82 syz-executor 83505 450924 95018 0 2 0x2 syz-executor 84552 58675 95018 0 2 0xc82 syz-executor 82195 226423 95018 0 2 0xc82 syz-executor 41776 210643 95018 0 3 0x82 nanoslp syz-executor 66808 237553 95018 0 2 0xc82 syz-executor 95018 361666 53568 0 3 0x82 kqread syz-executor 53568 384343 75372 0 3 0x10008a sigsusp ksh 75372 427595 27838 0 3 0x98 kqread sshd-session 27838 399184 64780 0 3 0x92 kqread sshd-session 27858 517491 1 0 3 0x100083 ttyin getty 64780 33048 1 0 3 0x88 kqread sshd 86511 131349 92186 73 3 0x1100090 kqread syslogd 92186 77559 1 0 3 0x100082 sbwait syslogd 94709 515769 1 0 3 0x100080 kqread resolvd 57061 406816 91407 77 3 0x100092 kqread dhcpleased 76789 83854 91407 77 3 0x100092 kqread dhcpleased 91407 161302 1 0 3 0x80 kqread dhcpleased 64886 347873 0 0 3 0x14200 bored smr 29006 410923 0 0 2 0x14200 zerothread 28159 207727 0 0 3 0x14200 aiodoned aiodoned 18111 408864 0 0 3 0x14200 syncer update 66863 319998 0 0 3 0x14200 cleaner cleaner 2526 22615 0 0 3 0x14200 reaper reaper 6868 92118 0 0 3 0x14200 pgdaemon pagedaemon 31656 417595 0 0 3 0x14200 bored viomb 11987 449748 0 0 3 0x40014200 acpi0 acpi0 39307 289694 0 0 2 0x14200 softnet0 75749 89002 0 0 3 0x14200 bored systqmp 89314 157644 0 0 3 0x14200 bored systq 71286 522199 0 0 3 0x40014200 tmoslp softclock 70897 328288 0 0 3 0x40014200 idle0 1 393458 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 11043 12165K 12452K 166960K 12477 0 pcb 18 12K 12K 166960K 33 0 rtable 257 8K 8K 166960K 393 0 pf 31 13K 13K 166960K 33 0 ifaddr 43 7K 7K 166960K 46 0 ifgroup 50 2K 2K 166960K 52 0 sysctl 3 1K 9K 166960K 7 0 counters 33 17K 17K 166960K 34 0 ioctlops 0 0K 4K 166960K 110 0 iov 0 0K 2K 166960K 5 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1300 82K 82K 166960K 1450 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 5 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1734 201K 291K 166960K 11964 0 file desc 17 61K 73K 166960K 229 0 proc 60 59K 75K 166960K 508 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 103 7K 7K 166960K 103 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 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 227 151K 173K 166960K 3793 0 UVM aobj 8 2K 2K 166960K 9 0 pinsyscall 38 76K 86K 166960K 1329 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 4 0 NDP 11 0K 2K 166960K 28 0 temp 41 9107K 9110K 166960K 3832 0 kqueue 14 22K 24K 166960K 39 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 43 0 39 1 0 1 1 0 8 0 rtentry 136 114 0 1 4 0 4 4 0 8 0 unpcb 144 68 0 49 1 0 1 1 0 8 0 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 160 0 150 7 0 7 7 0 8 5 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 4 0 4 1 0 1 1 0 8 1 inpcb 328 243 0 229 7 0 7 7 0 8 5 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 1 1 0 1 1 0 8 1 pfstscr 40 2 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 455 0 0 29 0 29 29 0 8 0 art_table 40 458 0 0 5 0 5 5 0 8 0 art_node 32 114 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1 semapl 72 4 0 1 1 0 1 1 0 8 0 shmpl 112 6 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1765 0 305 92 0 92 92 0 8 0 ffsino 256 1765 0 305 92 0 92 92 0 8 0 nchpl 144 2087 0 390 64 0 64 64 0 8 0 vnodes 216 1871 0 0 104 0 104 104 0 8 0 namei 1024 6337 0 6337 1 0 1 1 0 8 1 kstatmem 264 25 0 2 2 0 2 2 0 8 0 scxspl 216 6677 0 6677 3 0 3 3 1 8 3 plimitpl 152 78 0 61 1 0 1 1 0 8 0 sigapl 424 545 0 482 8 0 8 8 0 8 0 knotepl 120 5313 0 5265 9 0 9 9 0 8 7 kqueuepl 184 45 0 35 1 0 1 1 0 8 0 pipepl 304 126 0 99 3 0 3 3 0 8 0 fdescpl 448 511 0 482 4 0 4 4 0 8 0 filepl 120 2089 0 1867 10 0 10 10 0 8 3 lockfpl 104 57 0 52 1 0 1 1 0 8 0 lockfspl 48 26 0 22 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 104 325 0 313 1 0 1 1 0 8 0 zombiepl 144 482 0 482 1 0 1 1 0 8 1 processpl 1152 545 0 482 5 0 5 5 0 8 0 procpl 664 684 0 609 7 0 7 7 0 8 0 sockpl 552 359 0 322 8 0 8 8 0 8 5 mcl64k 65536 11 0 11 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 4 0 4 1 0 1 1 0 8 1 mcl4k 4096 2650 0 2596 14 0 14 14 0 8 7 mcl2k 2048 185 0 184 3 0 3 3 0 8 2 mtagpl 96 6 0 4 1 0 1 1 0 8 0 mbufpl 256 5202 0 5054 12 0 12 12 0 8 1 bufpl 272 2365 0 100 151 0 151 151 0 8 0 anonpl 24 112121 0 104881 45 0 45 45 0 187 0 amapchunkpl 152 11043 0 10542 28 0 28 28 0 158 7 amappl16 200 2425 0 2161 19 4 15 15 0 8 1 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 422 0 421 1 0 1 1 0 8 0 amappl13 176 113 0 103 1 0 1 1 0 8 0 amappl12 168 761 0 733 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 0 1 1 0 8 1 amappl10 152 62 0 52 1 0 1 1 0 8 0 amappl9 144 275 0 275 1 0 1 1 0 8 1 amappl8 136 94 0 92 1 0 1 1 0 8 0 amappl7 128 164 0 153 1 0 1 1 0 8 0 amappl6 120 168 0 167 1 0 1 1 0 8 0 amappl5 112 92 0 84 1 0 1 1 0 8 0 amappl4 104 260 0 244 1 0 1 1 0 8 0 amappl3 96 1983 0 1871 3 0 3 3 0 8 0 amappl2 88 517 0 465 2 0 2 2 0 8 0 amappl1 80 10381 0 9830 13 0 13 13 0 8 1 amappl 88 3090 0 2926 4 0 4 4 0 92 0 uvmvnodes 80 100 0 0 3 0 3 3 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 8 0 1 1 0 1 1 0 8 0 uaddrrnd 24 511 0 482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 511 0 482 1 0 1 1 0 8 0 vmmpekpl 168 5934 0 5909 2 0 2 2 0 8 0 vmmpepl 168 42267 0 40260 91 0 91 91 0 357 1 vmsppl 368 510 0 482 3 0 3 3 0 8 0 rwobjpl 40 15605 0 14412 13 0 13 13 0 8 0 pdppl 4096 1028 0 964 86 20 66 70 0 8 2 pvpl 32 254364 0 241997 105 0 105 105 0 265 1 pmappl 216 510 0 482 2 0 2 2 0 8 0 extentpl 40 46 0 28 1 0 1 1 0 8 0 phpool 112 507 0 20 14 0 14 14 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f8ca0,0,ffff80003c8f8c10,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000166af00,ffff80003c8f8d48,ffff80003c8f8ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8807ec39600,ffff800010fe1368) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1368,fffff8807ec39600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1368,0,ffff80003c8f8ef8,0,0,0) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800036cc5ca8,3,ffff80003c8f8ff0,0,ffff80003c8f9090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800036cc5ca8,ffff80003c8f9140,ffff80003c8f9090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f9140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f9140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8034d928990, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 arprequest sys/netinet/if_ether.c:325 [inline] arp_rtrequest(ffff8000002a3058,1,fffff8806cc30ab8) at arp_rtrequest+0x6a4 sys/netinet/if_ether.c:226 rtrequest(1,ffff80003c8f8ca0,0,ffff80003c8f8c10,16) at rtrequest+0xdc1 sys/net/route.c:1114 rtm_output(ffff80000166af00,ffff80003c8f8d48,ffff80003c8f8ca0,0,16) at rtm_output+0x91a sys/net/rtsock.c:956 route_output(fffff8807ec39600,ffff800010fe1368) at route_output+0xa6a sys/net/rtsock.c:862 route_send(ffff800010fe1368,fffff8807ec39600,0,0) at route_send+0xd7 sys/net/rtsock.c:322 sosend(ffff800010fe1368,0,ffff80003c8f8ef8,0,0,0) at sosend+0x804 sys/kern/uipc_socket.c:-1 sendit(ffff800036cc5ca8,3,ffff80003c8f8ff0,0,ffff80003c8f9090) at sendit+0x5a5 sys/kern/uipc_syscalls.c:785 sys_sendto(ffff800036cc5ca8,ffff80003c8f9140,ffff80003c8f9090) at sys_sendto+0x8d sys/kern/uipc_syscalls.c:563 syscall(ffff80003c8f9140) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8f9140) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8034d928990, count: -10