On Fri, Sep 22, 2023 at 10:50:23AM -0700, Kees Cook wrote: > 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 <[email protected]> > Cc: Conor Culhane <[email protected]> > Cc: Alexandre Belloni <[email protected]> > Cc: [email protected] > Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: Gustavo A. R. Silva <[email protected]> Thanks -- Gustavo > --- > drivers/i3c/master/svc-i3c-master.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > 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 { > -- > 2.34.1 > >
