Re: Selinux going crazy in 2.6.34-rc0

[Dmitry Torokhov]

On Sat, Mar 06, 2010 at 10:49:46AM +0000, Al Viro wrote:
> On Sat, Mar 06, 2010 at 02:29:19AM -0800, Dmitry Torokhov wrote:
> > Hi,
> > 
> > Selinux generates insane amounts of denial messages like the following
> > over and over again:
>  
> > type=SYSCALL msg=audit(1267870752.587:23084): arch=c000003e syscall=0 success=no exit=-13 a0=5 a1=2049af0 a2=400 a3=0 items=0 ppid=1 pid=1807 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="polkitd" exe="/usr/libexec/polkit-1/polkitd" subj=system_u:system_r:policykit_t:s0-s0:c0.c1023 key=(null)
> > type=AVC msg=audit(1267870752.587:23085): avc:  denied  { ioctl } for pid=1807 comm="polkitd" path="anon_inode:inotify" dev=anon_inodefs ino=839 scontext=system_u:system_r:policykit_t:s0-s0:c0.c1023 tcontext=system_u:object_r:anon_inodefs_t:s0 tclass=file
> > type=SYSCALL msg=audit(1267870752.587:23085): arch=c000003e syscall=16 success=no exit=-13 a0=5 a1=541b a2=7fff7b494bec a3=0 items=0 ppid=1 pid=1807 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="polkitd" exe="/usr/libexec/polkit-1/polkitd" subj=system_u:system_r:policykit_t:s0-s0:c0.c1023 key=(null)
> > type=AVC msg=audit(1267870752.587:23086): avc:  denied  { read } for pid=1807 comm="polkitd" path="anon_inode:inotify" dev=anon_inodefs ino=839 scontext=system_u:system_r:policykit_t:s0-s0:c0.c1023 tcontext=system_u:object_r:anon_inodefs_t:s0 tclass=file
> > type=SYSCALL msg=audit(1267870752.587:23086): arch=c000003e syscall=0 success=no exit=-13 a0=5 a1=2049af0 a2=400 a3=0 items=0 ppid=1 pid=1807 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="polkitd" exe="/usr/libexec/polkit-1/polkitd" subj=system_u:system_r:policykit_t:s0-s0:c0.c1023 key=(null)
> > type=AVC msg=audit(1267870752.587:23087): avc:  denied  { ioctl } for pid=1807 comm="polkitd" path="anon_inode:inotify" dev=anon_inodefs ino=839 scontext=system_u:system_r:policykit_t:s0-s0:c0.c1023 tcontext=system_u:object_r:anon_inodefs_t:s0 tclass=file
> > type=SYSCALL msg=audit(1267870752.587:23087): arch=c000003e syscall=16 success=no exit=-13 a0=5 a1=541b a2=7fff7b494bec a3=0 items=0 ppid=1 pid=1807 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="polkitd" exe="/usr/libexec/polkit-1/polkitd" subj=system_u:system_r:policykit_t:s0-s0:c0.c1023 key=(null)
>  
> Interesting...  That smells like a selinux policy that needed recognition
> of inotify file descriptors and got b0rken by
> commit c44dcc56d2b5c79ba3063d20f76e5347e2e418f6
> that switched inotify to use of anon_inodes.  Could you check if that's the
> trigger?

Yep, that was it. With this commit reverted selinux stays quiet.
Well, almost, it is never completely quiet ;).

Thank you Al.

-- 
Dmitry
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