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| author | Richard Guy Briggs <rgb@redhat.com> | 2015-08-05 15:23:09 -0400 |
|---|---|---|
| committer | Paul Moore <pmoore@redhat.com> | 2015-08-05 17:46:42 -0400 |
| commit | 8c85fc9ae69a4510ba5e2bd5fac2c1d9d60967ad (patch) | |
| tree | 2ac589add6d037ee2f3f1c736ce276d72fd85103 /kernel | |
| parent | ae9d2fb482fa48f637b6705e6fef6f7f999ec779 (diff) | |
| download | linux-stable-8c85fc9ae69a4510ba5e2bd5fac2c1d9d60967ad.tar.gz linux-stable-8c85fc9ae69a4510ba5e2bd5fac2c1d9d60967ad.tar.bz2 linux-stable-8c85fc9ae69a4510ba5e2bd5fac2c1d9d60967ad.zip | |
audit: make audit_del_rule() more robust
Move the access to the entry for audit_match_signal() to earlier in the
function in case the entry found is the same one passed in. This will enable
it to be used by audit_remove_mark_rule().
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
[PM: tweaked subject line as it no longer made sense after multiple revs]
Signed-off-by: Paul Moore <pmoore@redhat.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/auditfilter.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index 83f6d298d234..7ca7d3b5aca2 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -953,7 +953,6 @@ static inline int audit_del_rule(struct audit_entry *entry) mutex_lock(&audit_filter_mutex); e = audit_find_rule(entry, &list); if (!e) { - mutex_unlock(&audit_filter_mutex); ret = -ENOENT; goto out; } @@ -964,10 +963,6 @@ static inline int audit_del_rule(struct audit_entry *entry) if (e->rule.tree) audit_remove_tree_rule(&e->rule); - list_del_rcu(&e->list); - list_del(&e->rule.list); - call_rcu(&e->rcu, audit_free_rule_rcu); - #ifdef CONFIG_AUDITSYSCALL if (!dont_count) audit_n_rules--; @@ -975,9 +970,14 @@ static inline int audit_del_rule(struct audit_entry *entry) if (!audit_match_signal(entry)) audit_signals--; #endif - mutex_unlock(&audit_filter_mutex); + + list_del_rcu(&e->list); + list_del(&e->rule.list); + call_rcu(&e->rcu, audit_free_rule_rcu); out: + mutex_unlock(&audit_filter_mutex); + if (tree) audit_put_tree(tree); /* that's the temporary one */ |