qubes-linux-kernel/patches.fixes/xen-blkfront-connect-overflow.patch
Marek Marczykowski ef08570700 blkfront: fix overflow in connect function
binfo variable was overriden by sscanf (xenbus_gather) with incorrect format.
Result: there was no RO/removable etc flags set.
2011-05-02 16:03:29 +02:00

15 lines
557 B
Diff

barrier variable is int, not long. This overflow caused another variable
override: err (in PV code) and binfo (in xenlinux code).
--- linux-2.6.38.3/drivers/xen/blkfront/blkfront.c.orig 2011-05-02 01:56:29.572723580 +0200
+++ linux-2.6.38.3/drivers/xen/blkfront/blkfront.c 2011-05-02 12:44:20.512128661 +0200
@@ -364,7 +364,7 @@
}
err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-barrier", "%lu", &barrier,
+ "feature-barrier", "%u", &barrier,
NULL);
/*
* If there's no "feature-barrier" defined, then it means