eventpoll: use-after-possible-free in epoll_create1()

As soon as we'd installed the file into descriptor table, it can get closed by another thread. Freeing ep in process... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
mariux64 · Aug 22, 2012 · 9802274 · 9802274
1 parent 31605de
commit 9802274
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
@@ -1654,8 +1654,8 @@ SYSCALL_DEFINE1(epoll_create1, int, flags)
 		error = PTR_ERR(file);
 		goto out_free_fd;
 	}
-	fd_install(fd, file);
 	ep->file = file;
+	fd_install(fd, file);
 	return fd;
 
 out_free_fd: