Commit 0b944d3a authored Oct 30, 2016 by Christoph Hellwig Committed by Al Viro Oct 30, 2016

aio: hold an extra file reference over AIO read/write operations



Otherwise we might dereference an already freed file and/or inode
when aio_complete is called before we return from the read_iter or
write_iter method.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

parent a909d3e6

fs/aio.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1460,6 +1460,7 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,
		return ret;
		}

		get_file(file);
		if (rw == WRITE)
		file_start_write(file);

		@@ -1467,6 +1468,7 @@ static ssize_t aio_run_iocb(struct kiocb *req, unsigned opcode,

		if (rw == WRITE)
		file_end_write(file);
		fput(file);
		kfree(iovec);
		break;