Re: [PATCH][next] can: usb: fix potential integer overflow on shift of a int

[Marc Kleine-Budde]

On 11/5/20 12:24 PM, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> The left shift of int 32 bit integer constant 1 is evaluated using
> 32 bit arithmetic and then assigned to a signed 64 bit variable. In
> the case where time_ref->adapter->ts_used_bits is 32 or more this
> can lead to an oveflow. Avoid this by shifting using the BIT_ULL macro
> instead.
> 
> Addresses-Coverity: ("Unintentional integer overflow")
> Fixes: bb4785551f64 ("can: usb: PEAK-System Technik USB adapters driver core")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Applied to linux-can/testing (not to next).

Thanks,
Marc

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Pengutronix e.K.                 | Marc Kleine-Budde           |
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