Re: [PATCH] tty: don't leak cdev in tty_cdev_add()

[Richard Watts]

On 07/09/15 14:08, Leon Yu wrote:
> Commit a3a10ce3429e ("Avoid usb reset crashes by making tty_io cdevs truly
> dynamic") which mixes using cdev_alloc() and cdev_init() is problematic.
> Subsequent call to cdev_init() after cdev_alloc() sets kobj release method
> from cdev_dynamic_release() to cdev_default_release() and thus makes it
> impossible to free allocated cdev.
>
> This patch also consolidates error path of cdev_add() as cdev can also leak
> here if things went wrong.
>
> Signed-off-by: Leon Yu <chianglungyu@xxxxxxxxx>
> Fixes: a3a10ce3429e ("Avoid usb reset crashes by making tty_io cdevs truly dynamic")

 Oops! Apologies. Looks good to me - thank you.

Acked-by: Richard Watts <rrw@xxxxxxxxxxxxx>



Richard.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/