Ciao Muhammad, I've got many problems with ALSA drivers, including various kind of crashes.
To make a looong story short, use the alsa_drivers version 1.0.20, they have not yet crashed on me. Also, if you want to test it, you can compile the customized snd-dummy driver you find in the svn code, it is a try to have much more efficiency bot in softirqs and context switches, allows for 64 Skype instances (128 subdevices), etc. it is to be compiled with alsa_drivers 1.0.20 too. Is my feeling (I mean, almost sure) they got spin_locking wrong in previous versions, and it crashes the kernel when you "really" use it (Skype clients have a demented usage of alsa). BTW, I'm in the process of revamp the code, fix the bugs and apply patches. Please, have a look at the new wiki page with lots of new content, I'll send a mail to the ML tomorrow :-) Sincerely, Giovanni Maruzzelli ========================================= www.celliax.org via Pierlombardo 9, 20135 Milano Italy gmaruzz at celliax dot org Cell : +39-347-2665618 Fax : +39-02-87390039 On Sun, Jul 26, 2009 at 2:19 PM, Muhammad Shahzad<[email protected]> wrote: > Hi, > > I am having random Linux Kernel crash problems while running FreeSWITCH as > Skype to/from SIP gateway on one of our production servers. This machine is > running CentOS 5.2, Kernel version 2.6.18-92.1.22.el5.centos.plusPAE with FS > svn revision number 13754. > > At time of Kernel crash i could find following crash messages which point to > some source code file in FS source tree. > > --------------------- Kernel Begin ------------------------ > > > 3 Time(s): ======================= > 3 Time(s): [<c0404eff>] syscall_call+0x7/0xb > 3 Time(s): [<c043ed22>] sys_delete_module+0x192/0x1b8 > 3 Time(s): [<c0449011>] audit_syscall_entry+0x14b/0x17d > 3 Time(s): [<c049f4fe>] remove_proc_entry+0x139/0x18c > 3 Time(s): [<f8d96281>] alsa_sound_exit+0xa/0x30 [snd] > 3 Time(s): [<f8d96304>] snd_info_done+0x46/0x49 [snd] > 3 Time(s): BUG: warning at fs/proc/generic.c:732/remove_proc_entry() (Not > tainted) > 1 Time(s): snd-malloc: Memory leak? pages not freed = 1 > > ---------------------- Kernel End ------------------------- > > While the problem seems to arise from ALSA kernel module but it blames FS > file fs/proc/generic.c:732 for this. The only FS module that is using ALSA > is mod_skypiax but as far as i remember that module is using FS internal > routines to allocate and de-allocate sound driver services for Skype client. > > Please suggest a solution. > > Thank you. > > > -- > Muhammad Shahzad > ----------------------------------- > CISCO Rich Media Communication Specialist (CRMCS) > CISCO Certified Network Associate (CCNA) > Cell: +92 334 422 40 88 > MSN: [email protected] > Email: [email protected] > > _______________________________________________ > FreeSWITCH-users mailing list > [email protected] > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org > > _______________________________________________ FreeSWITCH-users mailing list [email protected] http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
