From 23d8f5b684fc30126b7708cad38b753eaa078b3e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 5 Jan 2021 14:19:11 -0500 Subject: make dump_common_audit_data() safe to be called from RCU pathwalk Signed-off-by: Al Viro --- security/lsm_audit.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'security') diff --git a/security/lsm_audit.c b/security/lsm_audit.c index a0cd28cd31a8..82ce14933513 100644 --- a/security/lsm_audit.c +++ b/security/lsm_audit.c @@ -291,18 +291,19 @@ static void dump_common_audit_data(struct audit_buffer *ab, struct dentry *dentry; struct inode *inode; + rcu_read_lock(); inode = a->u.inode; - dentry = d_find_alias(inode); + dentry = d_find_alias_rcu(inode); if (dentry) { audit_log_format(ab, " name="); spin_lock(&dentry->d_lock); audit_log_untrustedstring(ab, dentry->d_name.name); spin_unlock(&dentry->d_lock); - dput(dentry); } audit_log_format(ab, " dev="); audit_log_untrustedstring(ab, inode->i_sb->s_id); audit_log_format(ab, " ino=%lu", inode->i_ino); + rcu_read_unlock(); break; } case LSM_AUDIT_DATA_TASK: { -- cgit v1.2.3-58-ga151