When I try to access /proc/sys/net/ipv4/conf/eth0/forwarding this hapens:
[root@iceowl ~]# cat /proc/sys/net/ipv4/conf/eth0/forwarding
Segmentation fault
[root@iceowl ~]# dmesg
[...]
Unable to handle kernel paging request at virtual address 57d61c98
printing eip:
c0477c54
*pde = 00000000
Oops: 0000 [#1]
PREEMPT SMP
Modules linked in: ipt_state iptable_filter ip_tables ohci_hcd ehci_hcd snd_cs4231_lib snd_mpu401 analog ns558
parport_pc parport pcspkr eth1394 snd_cmipci gameport snd_opl3_lib snd_hwdep snd_mpu401_uart snd_rawmidi snd_seq_device
ohci1394 ieee1394 nvidia i2c_i801 i2c_core usbhid uhci_hcd pci_hotplug tsdev evdev cpufreq_powersave p4_clockmod
speedstep_lib freq_table ip_conntrack_ftp ip_conntrack snd_pcm_oss snd_pcm snd_timer snd_page_alloc snd_mixer_oss snd
soundcore ndiswrapper 8139too mii usbserial usbcore rtc
CPU: 0
EIP: 0060:[<c0477c54>] Tainted: P VLI
EFLAGS: 00210296 (2.6.12-rc4-mm2-ott)
EIP is at devinet_sysctl_forward+0x12/0x77
eax: 08066e30 ebx: 00000000 ecx: c0477c42 edx: d646b804
esi: 57d61c98 edi: 00000000 ebp: 00000004 esp: ce543efc
ds: 007b es: 007b ss: 0068
Process cat (pid: 4665, threadinfo=ce542000 task=c874fa30)
Stack: 08067234 00000001 00000006 ce543fbc c874fa30 08067234 c9034180 d646b804
00000000 00000004 c012604d d646b804 00000000 c9034180 08066e30 ce543f40
ce543fa4 00000400 c9034180 00000400 ce543fa4 00000000 c01260ab 00000000
Call Trace:
[<c012604d>] do_rw_proc+0x9e/0xaf
[<c01260ab>] proc_readsys+0x2f/0x33
[<c015eb0b>] vfs_read+0xb9/0x193
[<c015eec5>] sys_read+0x4b/0x74
[<c0102eab>] sysenter_past_esp+0x54/0x75
Code: 24 00 00 00 00 e8 55 16 fd ff 83 c4 04 5b 5e 5f c3 e8 36 c2 05 00 90 eb d4 55 57 56 53 83 ec 18 8b 54 24 2c 8b 5c
24 30 8b 72 08 <8b> 2e 8b 44 24 40 89 44 24 14 8b 44 24 3c 89 44 24 10 8b 44 24
It seems there's something wrong because not only the proc interface is brocken - ip_forwarding has on only an effect on
my secound networks card (wlan0).
Matthias-Christian Ott
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