[PATCH] drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()

[PATCH] drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()

[Dan Carpenter]

The "instance" variable needs to be signed for the error handling to work.

Fixes: b34ddc71267a ("drm/amdgpu: add error handle to avoid out-of-bounds")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 101038395c3b..772604feb6ac 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -2017,7 +2017,7 @@ static int sdma_v4_0_process_trap_irq(struct amdgpu_device *adev,
 				      struct amdgpu_irq_src *source,
 				      struct amdgpu_iv_entry *entry)
 {
-	uint32_t instance;
+	int instance;
 
 	DRM_DEBUG("IH: SDMA trap\n");
 	instance = sdma_v4_0_irq_id_to_seq(entry->client_id);
-- 
2.43.0

RE: [PATCH] drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()

[Zhou, Bob]

[Public]

Reviewed-by: Bob Zhou <bob.zhou@amd.com>

Regards,
Bob

-----Original Message-----
From: Dan Carpenter <dan.carpenter@linaro.org>
Sent: 2024年4月28日 20:57
To: Zhou, Bob <Bob.Zhou@amd.com>
Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>; Pan, Xinhui <Xinhui.Pan@amd.com>; David Airlie <airlied@gmail.com>; Daniel Vetter <daniel@ffwll.ch>; Kuehling, Felix <Felix.Kuehling@amd.com>; Zhang, Hawking <Hawking.Zhang@amd.com>; Guchun Chen <guchun.chen@amd.com>; Ma, Le <Le.Ma@amd.com>; Lazar, Lijo <Lijo.Lazar@amd.com>; Sharma, Shashank <Shashank.Sharma@amd.com>; amd-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; linux-kernel@vger.kernel.org; kernel-janitors@vger.kernel.org
Subject: [PATCH] drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()

The "instance" variable needs to be signed for the error handling to work.

Fixes: b34ddc71267a ("drm/amdgpu: add error handle to avoid out-of-bounds")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 101038395c3b..772604feb6ac 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -2017,7 +2017,7 @@ static int sdma_v4_0_process_trap_irq(struct amdgpu_device *adev,
                                      struct amdgpu_irq_src *source,
                                      struct amdgpu_iv_entry *entry)  {
-       uint32_t instance;
+       int instance;

        DRM_DEBUG("IH: SDMA trap\n");
        instance = sdma_v4_0_irq_id_to_seq(entry->client_id);
--
2.43.0

Re: [PATCH] drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()

[Alex Deucher]

Applied.  Thanks!

On Sun, Apr 28, 2024 at 9:32 PM Zhou, Bob <Bob.Zhou@amd.com> wrote:
>
> [Public]
>
> Reviewed-by: Bob Zhou <bob.zhou@amd.com>
>
> Regards,
> Bob
>
> -----Original Message-----
> From: Dan Carpenter <dan.carpenter@linaro.org>
> Sent: 2024年4月28日 20:57
> To: Zhou, Bob <Bob.Zhou@amd.com>
> Cc: Deucher, Alexander <Alexander.Deucher@amd.com>; Koenig, Christian <Christian.Koenig@amd.com>; Pan, Xinhui <Xinhui.Pan@amd.com>; David Airlie <airlied@gmail.com>; Daniel Vetter <daniel@ffwll.ch>; Kuehling, Felix <Felix.Kuehling@amd.com>; Zhang, Hawking <Hawking.Zhang@amd.com>; Guchun Chen <guchun.chen@amd.com>; Ma, Le <Le.Ma@amd.com>; Lazar, Lijo <Lijo.Lazar@amd.com>; Sharma, Shashank <Shashank.Sharma@amd.com>; amd-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org; linux-kernel@vger.kernel.org; kernel-janitors@vger.kernel.org
> Subject: [PATCH] drm/amdgpu: Fix signedness bug in sdma_v4_0_process_trap_irq()
>
> The "instance" variable needs to be signed for the error handling to work.
>
> Fixes: b34ddc71267a ("drm/amdgpu: add error handle to avoid out-of-bounds")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> ---
>  drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> index 101038395c3b..772604feb6ac 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
> @@ -2017,7 +2017,7 @@ static int sdma_v4_0_process_trap_irq(struct amdgpu_device *adev,
>                                       struct amdgpu_irq_src *source,
>                                       struct amdgpu_iv_entry *entry)  {
> -       uint32_t instance;
> +       int instance;
>
>         DRM_DEBUG("IH: SDMA trap\n");
>         instance = sdma_v4_0_irq_id_to_seq(entry->client_id);
> --
> 2.43.0
>