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Date: Thu, 4 Aug 2011 19:45:24 -0700
From: Tom London <selinux@...il.com>
To: Julian Anastasov <ja@....bg>
Cc: Dave Jones <davej@...hat.com>, netdev@...r.kernel.org
Subject: Re: return of ip_rt_bug()
On Thu, Aug 4, 2011 at 10:48 AM, Tom London <selinux@...il.com> wrote:
> On Thu, Aug 4, 2011 at 10:37 AM, Julian Anastasov <ja@....bg> wrote:
>>
>> Hello,
>>
>> On Thu, 4 Aug 2011, Tom London wrote:
>>
>>> How else can I help?
>>
>> From your bug report at
>> https://bugzilla.redhat.com/show_bug.cgi?id=712632 I see that
>> the application is xsane, "Manufacturer: EPSON". I downloaded
>> some sources and in sane-backends-git20110804/sanei/sanei_udp.c
>> I see some UDP usage.
>>
>> For example, sane-backends-git20110804/backend/epson2.c
>> calls sanei_udp_open_broadcast (UDP socket with SO_BROADCAST).
>> The socket is not bound, not connected, application sends packet to
>> 255.255.255.255:3289 in blocking mode and waits for reply for
>> 1 second. It is done for "net autodiscovery" config. As the socket
>> is not bound, kernel should search source address for every packet.
>> Nothing special so far. Not sure why your report has 2 oopses in
>> period of 1 second, may be config has 2 lines "net autodiscovery"
>> and 2 packets are sent?
>>
>> Your first report was for 192.168.2.5 but
>> I don't see the IP from your last report that is with
>> kernel-3.1.0-0.rc0.git12.1.fc17.x86_64. Now you show local IP is
>> 192.168.2.6. Do you have 192.168.2.5 as local IP, what shows
>> 'ip addr' ?
>>
>> Can you confirm that the IP you see in oops is always
>> configured (ip addr). Or may be it comes from DHCP and now is
>> 192.168.2.6?
>>
>> Can you start 'ip monitor' in one console while
>> attaching the USB device, so that we can know if any IP
>> addresses are reconfigured due to some events. For example,
>> script that restarts DHCP.
>>
>> Regards
>>
>> --
>> Julian Anastasov <ja@....bg>
>>
>
> Sure. I'll set this up when I get back home this evening.
>
> Not sure about the 192.168.2.5 vs 192.168.2.6 confusion. My laptop
> is connected to a Belkin router, and uses DHCP. I sometimes have the
> wireless interface connected as well, so perhaps this sometimes occurs
> when only the wired NIC is connected and sometimes when both the wired
> and wireless NICs are connected? I'll also see if I can uncover any
> DHCP history
>
> I'll try to follow the above instructions, and will report out about 8PM PDT.
>
> tom
OK. Booted up. Here is what 'ifconfig' says:
[root@...ndon ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1F:16:0B:56:A8
inet addr:192.168.2.6 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::21f:16ff:fe0b:56a8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2101 errors:0 dropped:0 overruns:0 frame:0
TX packets:1814 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1719912 (1.6 MiB) TX bytes:268153 (261.8 KiB)
Interrupt:20 Memory:f2600000-f2620000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:79 errors:0 dropped:0 overruns:0 frame:0
TX packets:79 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:19162 (18.7 KiB) TX bytes:19162 (18.7 KiB)
virbr0 Link encap:Ethernet HWaddr 52:54:00:B9:89:30
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
wlan0 Link encap:Ethernet HWaddr 00:21:5D:AC:C6:92
inet addr:192.168.2.9 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::221:5dff:feac:c692/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:22 errors:0 dropped:0 overruns:0 frame:0
TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2767 (2.7 KiB) TX bytes:5705 (5.5 KiB)
[root@...ndon ~]#
'ip addr' says:
[root@...ndon ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
state UP qlen 1000
link/ether 00:1f:16:0b:56:a8 brd ff:ff:ff:ff:ff:ff
inet 192.168.2.6/24 brd 192.168.2.255 scope global eth0
inet6 fe80::21f:16ff:fe0b:56a8/64 scope link
valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000
link/ether 00:21:5d:ac:c6:92 brd ff:ff:ff:ff:ff:ff
inet 192.168.2.9/24 brd 192.168.2.255 scope global wlan0
inet6 fe80::221:5dff:feac:c692/64 scope link
valid_lft forever preferred_lft forever
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
state DOWN
link/ether 52:54:00:b9:89:30 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc noop master virbr0
state DOWN qlen 500
link/ether 52:54:00:b9:89:30 brd ff:ff:ff:ff:ff:ff
[root@...ndon ~]#
I ran 'ip monitor' in one terminal window, ran 'inotail -f
/var/log/messages' in another, started 'gimp', and
did a 'create from usb:epson'.
I got this in the 'ip monitor' window:
[root@...ndon ~]# ip monitor
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
link/ether
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
link/ether
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP>
link/ether
192.168.2.1 dev eth0 lladdr 00:1c:df:e2:3e:e9 STALE
I got this in the 'inotify -f /var/log/messages' window:
Aug 4 19:29:27 tlondon kernel: [ 305.997223] usb 3-1: new full speed
USB device number 2 using uhci_hcd
Aug 4 19:29:28 tlondon kernel: [ 306.581320] usb 3-1: New USB device
found, idVendor=04b8, idProduct=010a
Aug 4 19:29:28 tlondon kernel: [ 306.581332] usb 3-1: New USB device
strings: Mfr=1, Product=2, SerialNumber=0
Aug 4 19:29:28 tlondon kernel: [ 306.581340] usb 3-1: Product: Perfection1640
Aug 4 19:29:28 tlondon kernel: [ 306.581346] usb 3-1: Manufacturer: EPSON
Aug 4 19:29:28 tlondon mtp-probe: checking bus 3, device 2:
"/sys/devices/pci0000:00/0000:00:1a.0/usb3/3-1"
Aug 4 19:29:28 tlondon mtp-probe: bus: 3, device: 2 was not an MTP device
Aug 4 19:30:07 tlondon kernel: [ 345.300960] ------------[ cut here
]------------
Aug 4 19:30:07 tlondon kernel: [ 345.300977] WARNING: at
net/ipv4/route.c:1714 ip_rt_bug+0x5c/0x62()
Aug 4 19:30:07 tlondon kernel: [ 345.300984] Hardware name: 74585FU
Aug 4 19:30:07 tlondon kernel: [ 345.300989] Modules linked in: fuse
ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE
iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state
nf_conntrack xt_CHECKSUM ppdev iptable_mangle parport_pc lp parport
tun bridge stp llc rfcomm bnep usblp arc4 snd_usb_audio
snd_usbmidi_lib snd_hda_codec_conexant snd_rawmidi uvcvideo videodev
snd_hda_intel snd_hda_codec media v4l2_compat_ioctl32 snd_hwdep
snd_seq snd_seq_device iwlagn snd_pcm btusb microcode iTCO_wdt
i2c_i801 iTCO_vendor_support thinkpad_acpi mac80211 snd_timer
bluetooth cfg80211 snd_page_alloc rfkill snd soundcore e1000e
virtio_net kvm_intel kvm uinput wmi i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
Aug 4 19:30:07 tlondon kernel: [ 345.301272] Pid: 2348, comm: xsane
Not tainted 3.1.0-0.rc0.git17.1.fc17.x86_64 #1
Aug 4 19:30:07 tlondon kernel: [ 345.301280] Call Trace:
Aug 4 19:30:07 tlondon kernel: [ 345.301300] [<ffffffff8105c470>]
warn_slowpath_common+0x83/0x9b
Aug 4 19:30:07 tlondon kernel: [ 345.301315] [<ffffffff8105c4a2>]
warn_slowpath_null+0x1a/0x1c
Aug 4 19:30:07 tlondon kernel: [ 345.301329] [<ffffffff8142f625>]
ip_rt_bug+0x5c/0x62
Aug 4 19:30:07 tlondon kernel: [ 345.301342] [<ffffffff81437231>]
dst_output+0x19/0x1d
Aug 4 19:30:07 tlondon kernel: [ 345.301355] [<ffffffff81438952>]
ip_local_out+0x20/0x25
Aug 4 19:30:07 tlondon kernel: [ 345.301369] [<ffffffff81439819>]
ip_send_skb+0x19/0x3e
Aug 4 19:30:07 tlondon kernel: [ 345.301385] [<ffffffff81456016>]
udp_send_skb+0x239/0x29b
Aug 4 19:30:07 tlondon kernel: [ 345.301399] [<ffffffff814577b3>]
udp_sendmsg+0x5a1/0x7d4
Aug 4 19:30:07 tlondon kernel: [ 345.301415] [<ffffffff813f69f7>] ?
release_sock+0x35/0x155
Aug 4 19:30:07 tlondon kernel: [ 345.301428] [<ffffffff8143732c>] ?
ip_select_ident+0x3d/0x3d
Aug 4 19:30:07 tlondon kernel: [ 345.301443] [<ffffffff81062587>] ?
local_bh_enable_ip+0xe/0x10
Aug 4 19:30:07 tlondon kernel: [ 345.301457] [<ffffffff814f1519>] ?
_raw_spin_unlock_bh+0x40/0x44
Aug 4 19:30:07 tlondon kernel: [ 345.301470] [<ffffffff813f6b0e>] ?
release_sock+0x14c/0x155
Aug 4 19:30:07 tlondon kernel: [ 345.301485] [<ffffffff8145eccc>]
inet_sendmsg+0x66/0x6f
Aug 4 19:30:07 tlondon kernel: [ 345.301498] [<ffffffff813f1fc2>]
sock_sendmsg+0xe6/0x109
Aug 4 19:30:07 tlondon kernel: [ 345.301513] [<ffffffff8108f078>] ?
lock_acquire+0x10f/0x13e
Aug 4 19:30:07 tlondon kernel: [ 345.301528] [<ffffffff8110d89e>] ?
might_fault+0x5c/0xac
Aug 4 19:30:07 tlondon kernel: [ 345.301542] [<ffffffff8108ef3c>] ?
lock_release+0x1a4/0x1d1
Aug 4 19:30:07 tlondon kernel: [ 345.301556] [<ffffffff8110d8e7>] ?
might_fault+0xa5/0xac
Aug 4 19:30:07 tlondon kernel: [ 345.301569] [<ffffffff813f2d07>] ?
copy_from_user+0x2f/0x31
Aug 4 19:30:07 tlondon kernel: [ 345.301582] [<ffffffff813f4b9d>]
sys_sendto+0x132/0x174
AugAug 4 19:30:08 tlondon kernel: [ 346.314606] ------------[ cut
here ]------------
Aug 4 19:30:08 tlondon kernel: [ 346.314612] WARNING: at
net/ipv4/route.c:1714 ip_rt_bug+0x5c/0x62()
Aug 4 19:30:08 tlondon kernel: [ 346.314615] Hardware name: 74585FU
Aug 4 19:30:08 tlondon kernel: [ 346.314616] Modules linked in: fuse
ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE
iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state
nf_conntrack xt_CHECKSUM ppdev iptable_mangle parport_pc lp parport
tun bridge stp llc rfcomm bnep usblp arc4 snd_usb_audio
snd_usbmidi_lib snd_hda_codec_conexant snd_rawmidi uvcvideo videodev
snd_hda_intel snd_hda_codec media v4l2_compat_ioctl32 snd_hwdep
snd_seq snd_seq_device iwlagn snd_pcm btusb microcode iTCO_wdt
i2c_i801 iTCO_vendor_support thinkpad_acpi mac80211 snd_timer
bluetooth cfg80211 snd_page_alloc rfkill snd soundcore e1000e
virtio_net kvm_intel kvm uinput wmi i915 drm_kms_helper drm
i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan]
Aug 4 19:30:08 tlondon kernel: [ 346.314693] Pid: 2348, comm: xsane
Tainted: G W 3.1.0-0.rc0.git17.1.fc17.x86_64 #1
Aug 4 19:30:08 tlondon kernel: [ 346.314695] Call Trace:
Aug 4 19:30:08 tlondon kernel: [ 346.314701] [<ffffffff8105c470>]
warn_slowpath_common+0x83/0x9b
Aug 4 19:30:08 tlondon kernel: [ 346.314704] [<ffffffff8105c4a2>]
warn_slowpath_null+0x1a/0x1c
Aug 4 19:30:08 tlondon kernel: [ 346.314708] [<ffffffff8142f625>]
ip_rt_bug+0x5c/0x62
Aug 4 19:30:08 tlondon kernel: [ 346.314711] [<ffffffff81437231>]
dst_output+0x19/0x1d
Aug 4 19:30:08 tlondon kernel: [ 346.314714] [<ffffffff81438952>]
ip_local_out+0x20/0x25
Aug 4 19:30:08 tlondon kernel: [ 346.314717] [<ffffffff81439819>]
ip_send_skb+0x19/0x3e
Aug 4 19:30:08 tlondon kernel: [ 346.314721] [<ffffffff81456016>]
udp_send_skb+0x239/0x29b
Aug 4 19:30:08 tlondon kernel: [ 346.314725] [<ffffffff814577b3>]
udp_sendmsg+0x5a1/0x7d4
Aug 4 19:30:08 tlondon kernel: [ 346.314729] [<ffffffff813f69f7>] ?
release_sock+0x35/0x155
Aug 4 19:30:08 tlondon kernel: [ 346.314732] [<ffffffff8143732c>] ?
ip_select_ident+0x3d/0x3d
Aug 4 19:30:08 tlondon kernel: [ 346.314736] [<ffffffff81062587>] ?
local_bh_enable_ip+0xe/0x10
Aug 4 19:30:08 tlondon kernel: [ 346.314740] [<ffffffff814f1519>] ?
_raw_spin_unlock_bh+0x40/0x44
Aug 4 19:30:08 tlondon kernel: [ 346.314743] [<ffffffff813f6b0e>] ?
release_sock+0x14c/0x155
Aug 4 19:30:08 tlondon kernel: [ 346.314747] [<ffffffff8145eccc>]
inet_sendmsg+0x66/0x6f
Aug 4 19:30:08 tlondon kernel: [ 346.314750] [<ffffffff813f1fc2>]
sock_sendmsg+0xe6/0x109
Aug 4 19:30:08 tlondon kernel: [ 346.314754] [<ffffffff8108f078>] ?
lock_acquire+0x10f/0x13e
Aug 4 19:30:08 tlondon kernel: [ 346.314758] [<ffffffff8110d89e>] ?
might_fault+0x5c/0xac
Aug 4 19:30:08 tlondon kernel: [ 346.314761] [<ffffffff8108ef3c>] ?
lock_release+0x1a4/0x1d1
Aug 4 19:30:08 tlondon kernel: [ 346.314765] [<ffffffff8110d8e7>] ?
might_fault+0xa5/0xac
Aug 4 19:30:08 tlondon kernel: [ 346.314768] [<ffffffff813f2d07>] ?
copy_from_user+0x2f/0x31
Aug 4 19:30:08 tlondon kernel: [ 346.314771] [<ffffffff813f4b9d>]
sys_sendto+0x132/0x174
Aug 4 19:30:08 tlondon kernel: [ 346.314775] [<ffffffff810b29eb>] ?
audit_syscall_entry+0x11c/0x148
Aug 4 19:30:08 tlondon kernel: [ 346.314780] [<ffffffff8124f03e>] ?
trace_hardirqs_on_thunk+0x3a/0x3f
Aug 4 19:30:08 tlondon kernel: [ 346.314784] [<ffffffff814f8382>]
system_call_fastpath+0x16/0x1b
Aug 4 19:30:08 tlondon kernel: [ 346.314786] ---[ end trace
97e7c0a8de097c51 ]---
Regarding the 'movable IP Address' issue (.5 vs. .6), I found the
following in /var/lib/dhclient/dhclient-5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03-eth0.lease
lease {
interface "eth0";
fixed-address 192.168.2.5;
option subnet-mask 255.255.255.0;
option dhcp-lease-time 4294967295;
option routers 192.168.2.1;
option dhcp-message-type 5;
option dhcp-server-identifier 192.168.2.1;
option domain-name-servers 192.168.2.1;
option domain-name "TintonFalls";
renew 4 2079/07/06 21:52:00;
rebind 1 2130/10/30 06:17:29;
expire 6 2147/11/04 01:06:07;
}
lease {
interface "eth0";
fixed-address 192.168.2.6;
option subnet-mask 255.255.255.0;
option dhcp-lease-time 4294967295;
option routers 192.168.2.1;
option dhcp-message-type 5;
option dhcp-server-identifier 192.168.2.1;
option domain-name-servers 192.168.2.1;
option domain-name "TintonFalls";
renew 2 2079/08/22 16:15:42;
rebind 4 2130/09/07 00:41:11;
expire 1 2147/09/11 19:29:49;
}
So, my router is just giving my wired NIC different addresses....
More I can provide?
tom
--
Tom London
--
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