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66fc475bd9
In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memcpy(), avoid intentionally writing across
neighboring array fields.
Remove old-style 1-byte array in favor of a flexible array[1] to avoid
future false-positive cross-field memcpy() warning in:
esas2r_vda.c:
memcpy(vi->cmd.gsv.version_info, esas2r_vdaioctl_versions, ...)
The change in struct size doesn't change other structure sizes (it is
already maxed out to 256 bytes, for example here:
union {
struct atto_ioctl_vda_scsi_cmd scsi;
struct atto_ioctl_vda_flash_cmd flash;
struct atto_ioctl_vda_diag_cmd diag;
struct atto_ioctl_vda_cli_cmd cli;
struct atto_ioctl_vda_smp_cmd smp;
struct atto_ioctl_vda_cfg_cmd cfg;
struct atto_ioctl_vda_mgt_cmd mgt;
struct atto_ioctl_vda_gsv_cmd gsv;
u8 cmd_info[256];
} cmd;
No sizes are calculated using the enclosing structure, so no other
updates are needed.
Link: https://lore.kernel.org/r/20210528181337.792268-3-keescook@chromium.org
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.