Hostapd SIGSEGV with rt2x00

[Andrew Tarabaras]

Johannes Berg wrote:
> On Sun, 2008-08-03 at 17:46 +0200, n_petr wrote:
>> Hello,
>> yesterday I recieved SIGSEGV from hostapd on:
>> kernel: 2.6.27-rc1-wl
>> driver: rt2500pci
>> version: 2.1.8
>> compiled: Aug 2 2008 18:48:26
>>
>> # hostapd.conf
>> interface=wlan0
>> driver=nl80211
>> ssid=stealth
>> hw_mode=g
>>
>> # hostapd -dd /etc/hostapd/hostapd.conf
>> Configuration file: /etc/hostapd/hostapd.conf
>> Failed to create interface mon.wlan0.
>> nl80211 driver initialization failed.
>> wlan0: Unable to setup interface.
>> Flushing old station entries
>> Deauthenticate all stations
>> Neoprávněný přístup do paměti (SIGSEGV)
>>
>> # dmesg
>> [ 873.450929] hostapd[5818]: segfault at 0 ip 0804c6af sp bff23f60 error 4 in hostapd[8048000+53000]
>> [ 1950.047936] hostapd[6591]: segfault at 0 ip 0804c6af sp bfca1070 error 4 in hostapd[8048000+53000]
>> [ 1985.862599] hostapd[6610]: segfault at 0 ip 0804c6af sp bfe36a00 error 4 in hostapd[8048000+53000]
>>
>> I am using Hostapd from git. You can see more info in:
>> http://sourceforge.net/mailarchive/forum.php?thread_name=1343.1215-14058-167311540-1217705175%40seznam.cz&forum_name=rt2400-devel
>>
>> Is it sufficient report for fix this bug?
> 
> Umm, no. Compile with debugging information and run with gdb.
> 
> johannes
> 

I get the same error when I forget to patch the kernel sources with 
allow-ap-vlan-modes.patch .  Did you remember to patch the kernel ?

Andrew.