linux-kernel - Re: [PATCH] USB: core: remove the move buf action

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Message-ID: <2025091007-stricken-relock-ef72@gregkh>
Date: Wed, 10 Sep 2025 11:00:43 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Edward Adam Davis <eadavis@...com>
Cc: syzbot+b6445765657b5855e869@...kaller.appspotmail.com, dakr@...nel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	rafael@...nel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [PATCH] USB: core: remove the move buf action

On Wed, Sep 10, 2025 at 03:58:47PM +0800, Edward Adam Davis wrote:
> The buffer size of sysfs is fixed at PAGE_SIZE, and the page offset
> of the buf parameter of sysfs_emit_at() must be 0, there is no need
> to manually manage the buf pointer offset.
> 
> Fixes: 711d41ab4a0e ("usb: core: Use sysfs_emit_at() when showing dynamic IDs")
> Reported-by: syzbot+b6445765657b5855e869@...kaller.appspotmail.com
> Closes: https://syzkaller.appspot.com/bug?extid=b6445765657b5855e869
> Tested-by: syzbot+b6445765657b5855e869@...kaller.appspotmail.com
> Signed-off-by: Edward Adam Davis <eadavis@...com>
> ---
>  drivers/usb/core/driver.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

While this fix looks correct, your cc: list is very odd as this is a
linux-usb bug, not a driver core issue, right?

At the least, cc: the person who wrote the offending change?

thanks,

greg k-h