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audit: fix potential double free on error path from fsnotify_add_inod…
…e_mark commit ad982c3 upstream. Audit_alloc_mark() assign pathname to audit_mark->path, on error path from fsnotify_add_inode_mark(), fsnotify_put_mark will free memory of audit_mark->path, but the caller of audit_alloc_mark will free the pathname again, so there will be double free problem. Fix this by resetting audit_mark->path to NULL pointer on error path from fsnotify_add_inode_mark(). Cc: stable@vger.kernel.org Fixes: 7b12932 ("fsnotify: Add group pointer in fsnotify_init_mark()") Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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