Commit 4306acd0 authored Aug 15, 2016 by Jan Beulich Committed by Sasha Levin Aug 31, 2016

xenbus: don't look up transaction IDs for ordinary writes



[ Upstream commit 9a035a40f7f3f6708b79224b86c5777a3334f7ea ]

This should really only be done for XS_TRANSACTION_END messages, or
else at least some of the xenstore-* tools don't work anymore.

Fixes: 0beef634b8 ("xenbus: don't BUG() on user mode induced condition")
Reported-by: Richard Schütz <rschuetz@uni-koblenz.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Tested-by: Richard Schütz <rschuetz@uni-koblenz.de>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>

parent 189f6d32

drivers/xen/xenbus/xenbus_dev_frontend.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -316,7 +316,7 @@ static int xenbus_write_transaction(unsigned msg_type,
		rc = -ENOMEM;
		goto out;
		}
		} else {
		} else if (msg_type == XS_TRANSACTION_END) {
		list_for_each_entry(trans, &u->transactions, list)
		if (trans->handle.id == u->u.msg.tx_id)
		break;