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    selinux: don't pass in NULL avd to avc_has_perm_noaudit · f01e1af4
    Linus Torvalds 提交于
    Right now security_get_user_sids() will pass in a NULL avd pointer to
    avc_has_perm_noaudit(), which then forces that function to have a dummy
    entry for that case and just generally test it.
    
    Don't do it.  The normal callers all pass a real avd pointer, and this
    helper function is incredibly hot.  So don't make avc_has_perm_noaudit()
    do conditional stuff that isn't needed for the common case.
    
    This also avoids some duplicated stack space.
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    f01e1af4
avc.c 21.6 KB