Hi - If you don't have confidential data on your machine, I would suggest you to turn of SELinux using "setenforce 0" (it needs root access) and then verify it using "getenforce" . Or disable it completely by modifying the file /etc/selinux/config. This is very much easier way.
If you want to use SELinux with Skype,then do - 1.add a selinux policy module using audit2allow command - "cat /var/log/audit/audit.log | audit2allow > skype.pp" 2.Make sure selinux-policy-devel package is installed and now compile the module. #make -f /usr/share/selinux/devel/Makefile skype.pp 3)load the module "semodule -i skype.pp " 4)verify it - semodule -l | grep skype Sometime back while working on OSS project, I found out SELinux documents are extremely rare to find. Few of them are - Dan Walsh's blog - http://danwalsh.livejournal.com/ and Dominick's http://selinux-mac.blogspot.com/ HTH On Tue, Aug 9, 2011 at 5:23 PM, anjaz ahmed <anjazah...@gmail.com> wrote: > Dear friends, > > Recently upgraded to Fedora 15, the skype application gets crashed > frequently.....The error details are as mentioned below. Would be great if > someone get it fixed. > > Thanks > > ===================================================================== > > SELinux is preventing /usr/bin/skype from mmap_zero access on the > memprotect Unknown. > > ***** Plugin mmap_zero (53.1 confidence) suggests > ************************** > > If you do not think /usr/bin/skype should need to mmap low memory in the > kernel. > Then you may be under attack by a hacker, this is a very dangerous access. > Do > contact your security administrator and report this issue. > > ***** Plugin catchall_boolean (42.6 confidence) suggests > ******************* > > If you want to control the ability to mmap a low area of the address space, > as configured by /proc/sys/kernel/mmap_min_addr. > Then you must tell SELinux about this by enabling the 'mmap_low_allowed' > boolean. > Do > setsebool -P mmap_low_allowed 1 > > ***** Plugin catchall (5.76 confidence) suggests > *************************** > > If you believe that skype should be allowed mmap_zero access on the Unknown > memprotect by default. > Then you should report this as a bug. > You can generate a local policy module to allow this access. > Do > allow this access for now by executing: > # grep threaded-ml /var/log/audit/audit.log | audit2allow -M mypol > # semodule -i mypol.pp > > Additional Information: > Source Context unconfined_u:unconfined_r:unconfined_execmem_t:s0- > s0:c0.c1023 > Target Context unconfined_u:unconfined_r:unconfined_execmem_t:s0- > s0:c0.c1023 > Target Objects Unknown [ memprotect ] > Source threaded-ml > Source Path /usr/bin/skype > Port <Unknown> > Host anjaz.intelvision.sc > Source RPM Packages skype-2.2.0.35-fc10 > Target RPM Packages > Policy RPM selinux-policy-3.9.16-35.fc15 > Selinux Enabled True > Policy Type targeted > Enforcing Mode Enforcing > Host Name anjaz.intelvision.sc > Platform Linux anjaz.intelvision.sc 2.6.38.8-35.fc15.x86_64 > #1 SMP Wed Jul 6 13:58:54 UTC 2011 x86_64 x86_64 > Alert Count 125 > First Seen Tue 09 Aug 2011 03:49:24 PM SCT > Last Seen Tue 09 Aug 2011 03:49:27 PM SCT > Local ID 943f7e9f-e074-437d-9ad1-cf76ac9f7615 > > Raw Audit Messages > type=AVC msg=audit(1312890567.697:245): avc: denied { mmap_zero } for > pid=4405 comm="skype" > scontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 > tcontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 > tclass=memprotect > > > type=SYSCALL msg=audit(1312890567.697:245): arch=i386 syscall=lgetxattr > per=400000 success=no exit=EACCES a0=0 a1=1000 a2=3 a3=22 items=0 ppid=1769 > pid=4405 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 > sgid=500 fsgid=500 tty=(none) ses=1 comm=skype exe=/usr/bin/skype > subj=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 > key=(null) > > Hash: > threaded-ml,unconfined_execmem_t,unconfined_execmem_t,memprotect,mmap_zero > > audit2allow > > #============= unconfined_execmem_t ============== > #!!!! This avc can be allowed using the boolean 'mmap_low_allowed' > > allow unconfined_execmem_t self:memprotect mmap_zero; > > audit2allow -R > > #============= unconfined_execmem_t ============== > #!!!! This avc can be allowed using the boolean 'mmap_low_allowed' > > allow unconfined_execmem_t self:memprotect mmap_zero; > > > > _______________________________________________ > india mailing list > india@lists.fedoraproject.org > https://admin.fedoraproject.org/mailman/listinfo/india > -- ---- Cheers, Lakshmipathi.G FOSS Programmer. www.giis.co.in
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