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1. Marco says:

   December 22, 2010 at 7:07 pm

   Firefox 3.6.13 Windows Vista
   Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 (.NET CLR 3.5.30729)

   Hi, I’ve installed the mod_qos but on the Apache logs I’ve this:

   *** glibc detected *** /usr/sbin/apache2: double free or corruption (!prev): 0x00000000023e53c0 ***
   ======= Backtrace: =========
   /lib/libc.so.6[0x7f97958939a8]
   /lib/libc.so.6(cfree+0x76)[0x7f9795895ab6]
   /usr/lib/libapr-1.so.0(apr_allocator_destroy+0x45)[0x7f9795daa7cb]
   /usr/lib/libapr-1.so.0(apr_pool_destroy+0x11a)[0x7f9795dab460]
   /usr/sbin/apache2[0x44d99e]
   /usr/sbin/apache2[0x44e0cb]
   /lib/libpthread.so.0[0x7f9795b81a80]
   /lib/libpthread.so.0(accept+0x4b)[0x7f9795b80a5b]
   /usr/lib/libapr-1.so.0(apr_socket_accept+0x91)[0x7f9795db18e7]
   /usr/sbin/apache2(unixd_accept+0x1d)[0x44efad]
   /usr/sbin/apache2[0x44dd64]
   /usr/sbin/apache2[0x44e064]
   /usr/sbin/apache2(ap_mpm_run+0xbd6)[0x44eca6]
   /usr/sbin/apache2(main+0x965)[0x425be5]
   /lib/libc.so.6(__libc_start_main+0xe6)[0x7f979583e1a6]
   /usr/sbin/apache2(apr_global_mutex_lock+0x41)[0x424e09]

   Have I done something wrong????

   Thanks…

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   • admin says:

     December 22, 2010 at 7:46 pm

     Opera 10.63 GNU/Linux x64
     Opera/9.80 (X11; Linux x86_64; U; en) Presto/2.6.30 Version/10.63

     Hi I think, it might be that the mod_qos is incompatible with this version of glibc you’re running.
     My experience with mod_qos wasn’t great so I would advise you to check out mod_antiloris. I’ve blogged about how to add the mod_antiloris to Debian Lenny on the link below:
     https://www.pc-freak.net/blog/protecting-debian-lenny-against-slowloris-denial-of-service-attack-with-mod_antiloris/

     Hope that helps

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