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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:50:23 -0700 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-09-25 23:34:05 +0200 |
| commit | a8b163e184dede158c94f6392a406ac40a08fb1b (patch) | |
| tree | b26d6b3f8bad7e4f0f28f74c2a35ffc6e843dad3 /drivers/i3c | |
| parent | 751d377f0f7a09d6122de0e2232133524568c52b (diff) | |
| download | lwn-a8b163e184dede158c94f6392a406ac40a08fb1b.tar.gz lwn-a8b163e184dede158c94f6392a406ac40a08fb1b.zip | |
i3c: svc: Annotate struct svc_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 svc_i3c_xfer.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Conor Culhane <conor.culhane@silvaco.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
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: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20230922175023.work.239-kees@kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/i3c')
| -rw-r--r-- | drivers/i3c/master/svc-i3c-master.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c index 8f8295acdadb..32eca2d6caf0 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/drivers/i3c/master/svc-i3c-master.c @@ -143,7 +143,7 @@ struct svc_i3c_xfer { int ret; unsigned int type; unsigned int ncmds; - struct svc_i3c_cmd cmds[]; + struct svc_i3c_cmd cmds[] __counted_by(ncmds); }; struct svc_i3c_regs_save { |