Re: [PATCH] usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers()

[Greg KH]

On Mon, Aug 17, 2026 at 04:38:39PM +0530, Jeffin Philip wrote:
> In fsg_common_set_num_buffers(), n can be 0 as conversion to u8
> using kstrtou8() in fsg_opts_num_buffers_store() can return
> values from _0_ to 255. When passing 0 as "n" value to kzalloc_objs,
> it can return a ZERO_SIZE_PTR, which passes the null check for
> buffhds.

But that is probably a bad idea, right?  Shouldn't we fix that error
first?

thanks,

greg k-h