Re: [PATCH 3/3] usb: mtu3: fix list_head check warning

[Greg Kroah-Hartman]

On Thu, Dec 09, 2021 at 11:14:24AM +0800, Chunfeng Yun wrote:
> This is caused by uninitialization of list_head.
> 
> BUG: KASAN: use-after-free in __list_del_entry_valid+0x34/0xe4
> 
> Call trace:
> dump_backtrace+0x0/0x298
> show_stack+0x24/0x34
> dump_stack+0x130/0x1a8
> print_address_description+0x88/0x56c
> __kasan_report+0x1b8/0x2a0
> kasan_report+0x14/0x20
> __asan_load8+0x9c/0xa0
> __list_del_entry_valid+0x34/0xe4
> mtu3_req_complete+0x4c/0x300 [mtu3]
> mtu3_gadget_stop+0x168/0x448 [mtu3]
> usb_gadget_unregister_driver+0x204/0x3a0
> unregister_gadget_item+0x44/0xa4
> 
> Reported-by: Yuwen Ng <yuwen.ng@xxxxxxxxxxxx>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
> ---
>  drivers/usb/mtu3/mtu3_gadget.c | 1 +
>  1 file changed, 1 insertion(+)

What commit does this fix?  Should it go to stable kernels?

thanks,

greg k-h