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c7e629c8fb
struct atio7_fcp_cmnd is a variable-length data structure because of add_cdb_len, but it is embedded in struct atio_from_isp and copied around like a fixed-length data structure. For big CDBs > 16 bytes, get_datalen_for_atio() called on a fixed-length copy of the atio will access invalid memory. In some cases this can be fixed by moving the atio to the end of the data structure and using a variable-length allocation. In other cases such as allocating struct qla_tgt_cmd, the fixed-length data structures are preallocated for speed, so in the case that add_cdb_len != 0, allocate a separate buffer for the CDB. Also add memcpy_atio() as a safeguard against invalid memory accesses. Signed-off-by: Tony Battersby <tonyb@cybernetics.com> Link: https://patch.msgid.link/306a9d0b-3c89-42fc-a69c-eebca8171347@cybernetics.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> [ commit 091719c21d5a upstream ]
Overview
This is the source code repository of the SCST project. SCST is a collection of Linux kernel drivers that implement SCSI target functionality. The SCST project includes:
- The SCST core in the scst/ subdirectory.
- A tool for loading, saving and modifying the SCST configuration in directory scstadmin/.
- Several SCSI target drivers in the directories iscsi-scst/, qla2x00t/, srpt/, scst_local/ and fcst/.
- User space programs in the usr/ subdirectory, e.g. fileio_tgt.
- Various documentation in the doc/ subdirectory.
Instructions for building and installing SCST are available in the INSTALL.md file.
QLogic target driver
Two QLogic target drivers are included in the SCST project.
The default driver is located in qla2x00t-32gbit directory and it supports up to 32 Gb/s FC. It is the newer one.
May anyone wish to switch back to the older driver that only supported up to
16 Gb/s adapters, it is located in qla2x00t directory. To make use of the
older driver build scst with environment variable QLA_32GBIT=no set.
Vladislav Bolkhovitin vst@vlnb.net, http://scst.sourceforge.net
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