From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Xiaogang Chen" <xiaogang.chen@amd.com>,
"Xiaogang Chen" <Xiaogang.Chen@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"Sasha Levin" <sashal@kernel.org>,
kraxel@redhat.com, vivek.kasireddy@intel.com,
sumit.semwal@linaro.org, dri-devel@lists.freedesktop.org,
linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org
Subject: [PATCH AUTOSEL 5.15 02/15] udmabuf: fix a buf size overflow issue during udmabuf creation
Date: Mon, 14 Apr 2025 09:31:12 -0400 [thread overview]
Message-ID: <20250414133126.680846-2-sashal@kernel.org> (raw)
In-Reply-To: <20250414133126.680846-1-sashal@kernel.org>
From: Xiaogang Chen <xiaogang.chen@amd.com>
[ Upstream commit 021ba7f1babd029e714d13a6bf2571b08af96d0f ]
by casting size_limit_mb to u64 when calculate pglimit.
Signed-off-by: Xiaogang Chen<Xiaogang.Chen@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250321164126.329638-1-xiaogang.chen@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma-buf/udmabuf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma-buf/udmabuf.c b/drivers/dma-buf/udmabuf.c
index a8094d57d2d06..84f7611c765b9 100644
--- a/drivers/dma-buf/udmabuf.c
+++ b/drivers/dma-buf/udmabuf.c
@@ -186,7 +186,7 @@ static long udmabuf_create(struct miscdevice *device,
if (!ubuf)
return -ENOMEM;
- pglimit = (size_limit_mb * 1024 * 1024) >> PAGE_SHIFT;
+ pglimit = ((u64)size_limit_mb * 1024 * 1024) >> PAGE_SHIFT;
for (i = 0; i < head->count; i++) {
if (!IS_ALIGNED(list[i].offset, PAGE_SIZE))
goto err;
--
2.39.5
next prev parent reply other threads:[~2025-04-14 13:31 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-14 13:31 [PATCH AUTOSEL 5.15 01/15] KVM: s390: Don't use %pK through tracepoints Sasha Levin
2025-04-14 13:31 ` Sasha Levin [this message]
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 03/15] selftests: ublk: fix test_stripe_04 Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 04/15] xen: Change xen-acpi-processor dom0 dependency Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 05/15] nvme: requeue namespace scan on missed AENs Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 06/15] ACPI PPTT: Fix coding mistakes in a couple of sizeof() calls Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 07/15] nvme: re-read ANA log page after ns scan completes Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 08/15] objtool: Stop UNRET validation on UD2 Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 09/15] selftests/mincore: Allow read-ahead pages to reach the end of the file Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 10/15] x86/bugs: Use SBPB in write_ibpb() if applicable Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 11/15] x86/bugs: Don't fill RSB on VMEXIT with eIBRS+retpoline Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 12/15] x86/bugs: Don't fill RSB on context switch with eIBRS Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 13/15] nvmet-fc: take tgtport reference only once Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 14/15] nvmet-fc: put ref when assoc->del_work is already scheduled Sasha Levin
2025-04-14 13:31 ` [PATCH AUTOSEL 5.15 15/15] ext4: make block validity check resistent to sb bh corruption Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250414133126.680846-2-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=christian.koenig@amd.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=kraxel@redhat.com \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=sumit.semwal@linaro.org \
--cc=vivek.kasireddy@intel.com \
--cc=xiaogang.chen@amd.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox