diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 20:50:11 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-09-26 00:32:33 +0300 |
| commit | 014c9a0e6f9ff573099051e1e2ff6efc3470d02d (patch) | |
| tree | 9995509e258851b039599a758bf37b1bd22a9348 | |
| parent | fa7726a4d9b91e0a8fb6fbbd819cd20f116f6c21 (diff) | |
| download | linux-014c9a0e6f9ff573099051e1e2ff6efc3470d02d.tar.xz | |
i3c: dw: Annotate struct dw_i3c_xfer with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct dw_i3c_xfer.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Jeremy Kerr <jk@codeconstruct.com.au>
Cc: Joel Stanley <joel@jms.id.au>
Cc: linux-i3c@lists.infradead.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://lore.kernel.org/r/20230922175011.work.800-kees@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
| -rw-r--r-- | drivers/i3c/master/dw-i3c-master.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 9332ae5f6419..ef5751e91cc9 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -233,7 +233,7 @@ struct dw_i3c_xfer { struct completion comp; int ret; unsigned int ncmds; - struct dw_i3c_cmd cmds[]; + struct dw_i3c_cmd cmds[] __counted_by(ncmds); }; struct dw_i3c_i2c_dev_data { |