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From: Tzung-Bi Shih <tzungbi@google.com>
To: ohad@wizery.com, bjorn.andersson@linaro.org
Cc: linux-remoteproc@vger.kernel.org, matthias.bgg@gmail.com,
	linux-mediatek@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, pihsun@chromium.org,
	tzungbi@google.com
Subject: [PATCH v2 1/3] remoteproc/mediatek: fix boundary check
Date: Mon, 16 Nov 2020 16:44:11 +0800	[thread overview]
Message-ID: <20201116084413.3312631-2-tzungbi@google.com> (raw)
In-Reply-To: <20201116084413.3312631-1-tzungbi@google.com>

It is valid if offset+length == sram_size.

For example, sram_size=100, offset=99, length=1.  Accessing offset 99
with length 1 is valid.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
---
 drivers/remoteproc/mtk_scp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index a1e23b5f19b9..0abbeb62cf43 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -408,11 +408,11 @@ static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len)
 
 	if (da < scp->sram_size) {
 		offset = da;
-		if (offset >= 0 && (offset + len) < scp->sram_size)
+		if (offset >= 0 && (offset + len) <= scp->sram_size)
 			return (void __force *)scp->sram_base + offset;
 	} else if (scp->dram_size) {
 		offset = da - scp->dma_addr;
-		if (offset >= 0 && (offset + len) < scp->dram_size)
+		if (offset >= 0 && (offset + len) <= scp->dram_size)
 			return scp->cpu_addr + offset;
 	}
 
-- 
2.29.2.299.gdc1121823c-goog


WARNING: multiple messages have this Message-ID (diff)
From: Tzung-Bi Shih <tzungbi@google.com>
To: ohad@wizery.com, bjorn.andersson@linaro.org
Cc: linux-remoteproc@vger.kernel.org, tzungbi@google.com,
	linux-mediatek@lists.infradead.org, pihsun@chromium.org,
	matthias.bgg@gmail.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] remoteproc/mediatek: fix boundary check
Date: Mon, 16 Nov 2020 16:44:11 +0800	[thread overview]
Message-ID: <20201116084413.3312631-2-tzungbi@google.com> (raw)
In-Reply-To: <20201116084413.3312631-1-tzungbi@google.com>

It is valid if offset+length == sram_size.

For example, sram_size=100, offset=99, length=1.  Accessing offset 99
with length 1 is valid.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
---
 drivers/remoteproc/mtk_scp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index a1e23b5f19b9..0abbeb62cf43 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -408,11 +408,11 @@ static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len)
 
 	if (da < scp->sram_size) {
 		offset = da;
-		if (offset >= 0 && (offset + len) < scp->sram_size)
+		if (offset >= 0 && (offset + len) <= scp->sram_size)
 			return (void __force *)scp->sram_base + offset;
 	} else if (scp->dram_size) {
 		offset = da - scp->dma_addr;
-		if (offset >= 0 && (offset + len) < scp->dram_size)
+		if (offset >= 0 && (offset + len) <= scp->dram_size)
 			return scp->cpu_addr + offset;
 	}
 
-- 
2.29.2.299.gdc1121823c-goog


_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Tzung-Bi Shih <tzungbi@google.com>
To: ohad@wizery.com, bjorn.andersson@linaro.org
Cc: linux-remoteproc@vger.kernel.org, tzungbi@google.com,
	linux-mediatek@lists.infradead.org, pihsun@chromium.org,
	matthias.bgg@gmail.com, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] remoteproc/mediatek: fix boundary check
Date: Mon, 16 Nov 2020 16:44:11 +0800	[thread overview]
Message-ID: <20201116084413.3312631-2-tzungbi@google.com> (raw)
In-Reply-To: <20201116084413.3312631-1-tzungbi@google.com>

It is valid if offset+length == sram_size.

For example, sram_size=100, offset=99, length=1.  Accessing offset 99
with length 1 is valid.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
---
 drivers/remoteproc/mtk_scp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index a1e23b5f19b9..0abbeb62cf43 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -408,11 +408,11 @@ static void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len)
 
 	if (da < scp->sram_size) {
 		offset = da;
-		if (offset >= 0 && (offset + len) < scp->sram_size)
+		if (offset >= 0 && (offset + len) <= scp->sram_size)
 			return (void __force *)scp->sram_base + offset;
 	} else if (scp->dram_size) {
 		offset = da - scp->dma_addr;
-		if (offset >= 0 && (offset + len) < scp->dram_size)
+		if (offset >= 0 && (offset + len) <= scp->dram_size)
 			return scp->cpu_addr + offset;
 	}
 
-- 
2.29.2.299.gdc1121823c-goog


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-11-16  9:11 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-16  8:44 [PATCH v2 0/3] remoteproc/mediatek: read IPI buffer offset from FW binary Tzung-Bi Shih
2020-11-16  8:44 ` Tzung-Bi Shih
2020-11-16  8:44 ` Tzung-Bi Shih
2020-11-16  8:44 ` Tzung-Bi Shih [this message]
2020-11-16  8:44   ` [PATCH v2 1/3] remoteproc/mediatek: fix boundary check Tzung-Bi Shih
2020-11-16  8:44   ` Tzung-Bi Shih
2020-11-20 23:31   ` Mathieu Poirier
2020-11-20 23:31     ` Mathieu Poirier
2020-11-20 23:31     ` Mathieu Poirier
2020-11-16  8:44 ` [PATCH v2 2/3] remoteproc/mediatek: skip if filesz is 0 Tzung-Bi Shih
2020-11-16  8:44   ` Tzung-Bi Shih
2020-11-16  8:44   ` Tzung-Bi Shih
2020-11-20 23:35   ` Mathieu Poirier
2020-11-20 23:35     ` Mathieu Poirier
2020-11-20 23:35     ` Mathieu Poirier
2020-11-16  8:44 ` [PATCH v2 3/3] remoteproc/mediatek: read IPI buffer offset from FW Tzung-Bi Shih
2020-11-16  8:44   ` Tzung-Bi Shih
2020-11-16  8:44   ` Tzung-Bi Shih
2020-11-20 23:50   ` Mathieu Poirier
2020-11-20 23:50     ` Mathieu Poirier
2020-11-20 23:50     ` Mathieu Poirier
2020-11-23  3:03     ` Tzung-Bi Shih
2020-11-23  3:03       ` Tzung-Bi Shih
2020-11-23  3:03       ` Tzung-Bi Shih

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