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| author | Darrick J. Wong <djwong@us.ibm.com> | 2011-02-01 03:47:54 +0100 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-02-12 18:21:56 +0100 |
| commit | a361cc0025614fdd07f5f69aeeaa8075530870bc (patch) | |
| tree | 419b9ae33664d20e6df60e78bf51f2d320548cf1 /Documentation/debugging-via-ohci1394.txt | |
| parent | [SCSI] qla2xxx: Change from irq to irqsave with host_lock (diff) | |
| download | linux-a361cc0025614fdd07f5f69aeeaa8075530870bc.tar.xz linux-a361cc0025614fdd07f5f69aeeaa8075530870bc.zip | |
[SCSI] scsi_debug: Fix 32-bit overflow in do_device_access causing memory corruption
If I create a scsi_debug device that is larger than 4GB, the multiplication of
(block * scsi_debug_sector_size) can produce a 64-bit value. Unfortunately,
the compiler sees two 32-bit quantities and performs a 32-bit multiplication,
thus truncating the bits above 2^32. This causes the wrong memory location to
be read or written. Change block and rest to be unsigned long long.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'Documentation/debugging-via-ohci1394.txt')
0 files changed, 0 insertions, 0 deletions