Commit 5df4223a authored Jun 17, 2010 by Ralph Campbell Committed by Roland Dreier Jul 06, 2010

IB/qib: Clear eager buffer memory for each new process

The eager buffers are not being cleared before being mmapped into a
new user address space. This is a potential security risk and should
be fixed. Note that the eager header queue is already being cleared.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

parent b9e03e04

drivers/infiniband/hw/qib/qib_init.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1472,6 +1472,9 @@ int qib_setup_eagerbufs(struct qib_ctxtdata *rcd)
		dma_addr_t pa = rcd->rcvegrbuf_phys[chunk];
		unsigned i;

		/* clear for security and sanity on each use */
		memset(rcd->rcvegrbuf[chunk], 0, size);

		for (i = 0; e < egrcnt && i < egrperchunk; e++, i++) {
		dd->f_put_tid(dd, e + egroff +
		(u64 __iomem *)