diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-14 14:29:49 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-14 14:29:49 +1000 |
| commit | 11c2d8174ed3dc4f1971564732689b4a39129702 (patch) | |
| tree | ac00daa548ea8ac24ae7a5c8062312e335ab9858 /drivers/scsi/scsi_lib.c | |
| parent | cde274c0c789404df8ece3f9e7d6506caf0127e2 (diff) | |
| parent | bce7f793daec3e65ec5c5705d2457b81fe7b5725 (diff) | |
Merge commit 'origin/HEAD' into test-merge
Manual fixup of include/asm-powerpc/pgtable-ppc64.h
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index a82d2fe80fb..cbf55d59a54 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -207,6 +207,15 @@ int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, */ blk_execute_rq(req->q, NULL, req, 1); + /* + * Some devices (USB mass-storage in particular) may transfer + * garbage data together with a residue indicating that the data + * is invalid. Prevent the garbage from being misinterpreted + * and prevent security leaks by zeroing out the excess data. + */ + if (unlikely(req->data_len > 0 && req->data_len <= bufflen)) + memset(buffer + (bufflen - req->data_len), 0, req->data_len); + ret = req->errors; out: blk_put_request(req); |