From: Akinobu Mita Date: Wed, 18 Sep 2013 12:27:24 +0000 (+0900) Subject: [SCSI] scsi_debug: fix buffer overrun when DIF/DIX is enabled and virtual_gb > 0 X-Git-Tag: v3.13-rc1~99^2~43 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14faa944b6fa4c77a6f386806c33ce2c3c77b3a4;p=pandora-kernel.git [SCSI] scsi_debug: fix buffer overrun when DIF/DIX is enabled and virtual_gb > 0 If the module parameter virtual_gb is greater than 0, the READ command may request the blocks which exceed actual ramdisk storage (fake_storep). prot_verify_read() should treat those blocks as wrap around the end of fake_storep. But it actually causes fake_storep and dif_storep buffer overruns. This fixes these buffer overruns. In order to simplify the fix, this also introduces fake_store() and dif_store() which return corresponding wrap around addresses. Signed-off-by: Akinobu Mita Acked-by: Martin K. Petersen Signed-off-by: James Bottomley --- Reading git-diff-tree failed