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>
This commit is contained in:
Al Viro 2012-08-17 22:42:36 -04:00
parent 31605debdf
commit 98022748f6

View file

@ -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: