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 via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). Also, relocate `event->datalen = datalen;` to before calling `memcpy(event->data, data, datalen);`, so that the __counted_by annotation has effect, and flex-array member `data` can be properly bounds-checked at run-time. While there, use struct_size() helper, instead of the open-coded version, to calculate the size for the allocation of the whole flexible structure, including of course, the flexible-array member. This code was found with the help of Coccinelle, and audited and fixed manually.
From the description above I think this change looks sane so...
Acked-by: Arend van Spriel <arend.vanspriel@xxxxxxxxxxxx>
Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx> --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
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