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authoraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2009-01-28 21:58:22 +0000
committeraliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162>2009-01-28 21:58:22 +0000
commite035b43d7c98b1509420d41b017abcdac0de0442 (patch)
tree2dccc84bb2394e3b5d5b56474abea2ab24c72a64 /VERSION
parentbaa8c602295b1d33844503ce0a172b85f84646d3 (diff)
fix signed/unsigned overflows in SCSI disk (Rik van Riel)
Sector numbers can overflow on a virtual scsi disk of over 1TB in size. Qemu's bdrv_read expects an int64_t, so fix the overflow by going to that data type. On large disks, we clip the capacity to 2TB instead of returning "capacity modulo 2TB". Turn sector_count into an unsigned to prevent a signed/unsigned overflow with SCSI transfers larger than 2TB. We're unlikely to ever hit this bug, but fixing it is just one line. Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6467 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'VERSION')
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