From 0f5e64200f20fc8f5b759c4010082f577ab0af3f Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Mon, 21 Apr 2008 16:24:11 -0400 Subject: [PATCH] SELinux: no BUG_ON(!ss_initialized) in selinux_clone_mnt_opts The Fedora installer actually makes multiple NFS mounts before it loads selinux policy. The code in selinux_clone_mnt_opts() assumed that the init process would always be loading policy before NFS was up and running. It might be possible to hit this in a diskless environment as well, I'm not sure. There is no need to BUG_ON() in this situation since we can safely continue given the circumstances. Signed-off-by: Eric Paris Signed-off-by: James Morris --- security/selinux/hooks.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 1bf2543ea942..33af321f647b 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -755,9 +755,18 @@ static void selinux_sb_clone_mnt_opts(const struct super_block *oldsb, int set_context = (oldsbsec->flags & CONTEXT_MNT); int set_rootcontext = (oldsbsec->flags & ROOTCONTEXT_MNT); - /* we can't error, we can't save the info, this shouldn't get called - * this early in the boot process. */ - BUG_ON(!ss_initialized); + /* + * if the parent was able to be mounted it clearly had no special lsm + * mount options. thus we can safely put this sb on the list and deal + * with it later + */ + if (!ss_initialized) { + spin_lock(&sb_security_lock); + if (list_empty(&newsbsec->list)) + list_add(&newsbsec->list, &superblock_security_head); + spin_unlock(&sb_security_lock); + return; + } /* how can we clone if the old one wasn't set up?? */ BUG_ON(!oldsbsec->initialized); -- 2.20.1