From: Dan Carpenter <error27@gmail.com>
To: LiuJunyuan <2058432396@qq.com>
Cc: gregkh@linuxfoundation.org, linux-staging@lists.linux.dev,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] staging: vme_user: handle zero image size in read/write
Date: Wed, 21 Oct 2026 09:02:00 +0300 [thread overview]
Message-ID: <athVWGRs0HoPO8uH@stanley.mountain> (raw)
In-Reply-To: <tencent_FE0C25ACDF20A06CBFD0651E7C4ECD7E5009@qq.com>
On Wed, Oct 21, 2026 at 11:41:38AM +0800, LiuJunyuan wrote:
> vme_get_size() can return zero for an unallocated image. The existing
> image_size - 1 checks underflow in that case and can allow an invalid
> position to proceed, wrapping the subsequent count calculation. Check
> image_size and *ppos directly instead.
>
> Signed-off-by: LiuJunyuan <2058432396@qq.com>
> ---
This one is a bug fix and needs a Fixes tag.
regards,
dan carpenter
next prev parent reply other threads:[~2026-10-21 6:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-21 3:41 [PATCH] staging: vme_user: handle zero image size in read/write LiuJunyuan
2026-10-21 6:02 ` Dan Carpenter [this message]
2026-10-21 6:04 ` Dan Carpenter
2026-10-21 6:16 ` Greg KH
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