From: Vitaly Kuznetsov Date: Tue, 31 Mar 2015 18:16:41 +0000 (-0700) Subject: Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case X-Git-Tag: omap-for-v4.2/o2_dc~63^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=797f88c987b02a8de8d4fac94ec2877b92ec35a2;p=pandora-kernel.git Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case balloon_wrk.num_pages is __u32 and it comes from host in struct dm_balloon where it is also __u32. We, however, use 'int' in balloon_up() and in case we happen to receive num_pages>INT_MAX request we'll end up allocating zero pages as 'num_pages < alloc_unit' check in alloc_balloon_pages() will pass. Change num_pages type to unsigned int. In real life ballooning request come with num_pages in [512, 32768] range so this is more a future-proof/cleanup. Reported-by: Laszlo Ersek Signed-off-by: Vitaly Kuznetsov Reviewed-by: Laszlo Ersek Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman --- Reading git-diff-tree failed