#309: Kernel panic on ifconfig ath0 up
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Reporter: wojtek_AT_swiatek._TOBEREMOVED_name | Owner:
Type: defect | Status: new
Priority: blocker | Milestone:
Component: madwifi: other | Version: trunk
Resolution: | Keywords:
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Changes (by mrenzmann):
* version: => trunk
Old description:
> System: 2.6.14-gentoo-r5 [[BR]]
> MadWifi: svn snapshot as of 10 Jan 2006 [[BR]]
>
> Summary: [[BR]]
>
> - compilation OK [[BR]]
>
> - wlanconfig to create ath0 in ap mode [[BR]]
>
> - iwconfig ath0 essid something mode master [[BR]]
>
> - bridge setup (addbr, addif, bridge up) OK [[BR]]
>
> - ifconfig eth0 up OK [[BR]]
>
> - ifconfig ath0 up --> kernel crash [[BR]]
>
> The kernel crashes in most of the case immediately upon issuing the
> ifconfig command for ath0, or sometimes after a few seconds [[BR]]
>
> Dump of the condole screen:
>
> {{{
> kb_over_panic: text:f8a01b7b len:53 put:53 head:f6778c60 data:f6778c00
> tail:f6778c00 end:f6778c80 dev:<NULL>
>
> ------------[ cut here ]------------
>
> kernel BUG at net/core/skbuff.c:94!
>
> invalid operand: 0000 [#1]
>
> Modules linked in: bridge wlan_scan_ap ohci_hcd ath_pci ath_rate_sample
> wlan ath_hal i2c_i801 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus
> snd_pcm snd_timer snd snd_page_alloc ehci_hcd uhci_hcd intel_agp agpgart
>
> CPU: 0
>
> EIP: 0060:[<c0280b25>] Tainted: P VLI
>
> EFLAGS: 00010296 (2.6.14-gentoo-r5)
>
> EIP is at skb_over_panic+0x45/0x60
>
> eax: 00000074 ebx: f61e9e80 ecx: c039ef14 edx: c030f9c0
>
> esi: f6778c2b edi: 00000035 ebp: f73f6240 esp: c039ef10
>
> ds: 007b es: 007b ss: 0068
>
> Process metalog (pid: 4657, threadinfo=c039e000 task=f6ccda90)
>
> Stack: c030f9c0 f8a01b7b 00000035 00000035 f6778c60 f6778c00 f6778c00
> f6778c80
>
> c02f0b4c f8a01b83 f61e9e80 00000035 f8a01b7b f6b5035c 00000000
> f73f60f4
>
> f89f7a2e c039ef64 00000035 f6b50240 f73f6240 f6b50240 f6b5035c
> f6c9a800
>
> Call Trace:
>
> [<f8a01b7b>] ieee80211_getmgtframe+0xcb/0xf0 [wlan]
>
> [<f8a01b83>] ieee80211_getmgtframe+0xd3/0xf0 [wlan]
>
> [<f8a01b7b>] ieee80211_getmgtframe+0xcb/0xf0 [wlan]
>
> [<f89f7a2e>] ieee80211_send_probereq+0x4e/0x270 [wlan]
>
> [<f89fbe70>] scan_next+0x3b0/0x440 [wlan]
>
> [<f89fbac0>] scan_next+0x0/0x440 [wlan]
>
> [<c011e004>] run_timer_softirq+0xb4/0x190
>
> [<c011a903>] __do_softirq+0x83/0x90
>
> [<c0104419>] do_softirq+0x39/0x40
>
> =======================
>
> [<c0104328>] do_IRQ+0x48/0x60
>
> [<c010303a>] common_interrupt+0x1a/0x20
>
> Code: 94 00 00 00 50 8b 82 90 00 00 00 50 8b 82 8c 00 00 00 50 8b 4c 24
> 1c 51 8b 52 58 52 8b 44 24 28 50 68 c0 f9 30 c0 e8 7b 5e e9 ff <0f> 0b 5e
> 00 75 db 30 c0 83 c4 24 c3 eb 0d 90 90 90 90 90 90 90
>
> Kernel panic - not syncing: Fatal exception in interrupt
>
> }}}
New description:
System: 2.6.14-gentoo-r5 [[BR]]
MadWifi: svn snapshot as of 10 Jan 2006 [[BR]]
Summary: [[BR]]
- compilation OK [[BR]]
- wlanconfig to create ath0 in ap mode [[BR]]
- iwconfig ath0 essid something mode master [[BR]]
- bridge setup (addbr, addif, bridge up) OK [[BR]]
- ifconfig eth0 up OK [[BR]]
- ifconfig ath0 up --> kernel crash [[BR]]
The kernel crashes in most of the case immediately upon issuing the
ifconfig command for ath0, or sometimes after a few seconds [[BR]]
Dump of the condole screen:
{{{
kb_over_panic: text:f8a01b7b len:53 put:53 head:f6778c60 data:f6778c00
tail:f6778c00 end:f6778c80 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:94!
invalid operand: 0000 [#1]
Modules linked in: bridge wlan_scan_ap ohci_hcd ath_pci ath_rate_sample
wlan ath_hal i2c_i801 i2c_core snd_intel8x0 snd_ac97_codec snd_ac97_bus
snd_pcm snd_timer snd snd_page_alloc ehci_hcd uhci_hcd intel_agp agpgart
CPU: 0
EIP: 0060:[<c0280b25>] Tainted: P VLI
EFLAGS: 00010296 (2.6.14-gentoo-r5)
EIP is at skb_over_panic+0x45/0x60
eax: 00000074 ebx: f61e9e80 ecx: c039ef14 edx: c030f9c0
esi: f6778c2b edi: 00000035 ebp: f73f6240 esp: c039ef10
ds: 007b es: 007b ss: 0068
Process metalog (pid: 4657, threadinfo=c039e000 task=f6ccda90)
Stack: c030f9c0 f8a01b7b 00000035 00000035 f6778c60 f6778c00 f6778c00
f6778c80
c02f0b4c f8a01b83 f61e9e80 00000035 f8a01b7b f6b5035c 00000000
f73f60f4
f89f7a2e c039ef64 00000035 f6b50240 f73f6240 f6b50240 f6b5035c
f6c9a800
Call Trace:
[<f8a01b7b>] ieee80211_getmgtframe+0xcb/0xf0 [wlan]
[<f8a01b83>] ieee80211_getmgtframe+0xd3/0xf0 [wlan]
[<f8a01b7b>] ieee80211_getmgtframe+0xcb/0xf0 [wlan]
[<f89f7a2e>] ieee80211_send_probereq+0x4e/0x270 [wlan]
[<f89fbe70>] scan_next+0x3b0/0x440 [wlan]
[<f89fbac0>] scan_next+0x0/0x440 [wlan]
[<c011e004>] run_timer_softirq+0xb4/0x190
[<c011a903>] __do_softirq+0x83/0x90
[<c0104419>] do_softirq+0x39/0x40
=======================
[<c0104328>] do_IRQ+0x48/0x60
[<c010303a>] common_interrupt+0x1a/0x20
Code: 94 00 00 00 50 8b 82 90 00 00 00 50 8b 82 8c 00 00 00 50 8b 4c 24 1c
51 8b 52 58 52 8b 44 24 28 50 68 c0 f9 30 c0 e8 7b 5e e9 ff <0f> 0b 5e 00
75 db 30 c0 83 c4 24 c3 eb 0d 90 90 90 90 90 90 90
Kernel panic - not syncing: Fatal exception in interrupt
}}}
Comment:
Please try if you get the panic also when you configure ath0 and bring it
up (via ifconfig ath0 up) without enslaving it to the bridge.
--
Ticket URL: <http://madwifi.org/ticket/309>
MadWifi <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
