From: Sam James <sam@gentoo.org>
To: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org, Sam James <sam@gentoo.org>
Subject: [PATCH] amdgpu: Adjust kmalloc_array calls for new -Walloc-size
Date: Sun, 5 Nov 2023 16:06:50 +0000 [thread overview]
Message-ID: <20231105160652.374422-1-sam@gentoo.org> (raw)
In-Reply-To: <87wmuwo7i3.fsf@gentoo.org>
GCC 14 introduces a new -Walloc-size included in -Wextra which errors out
on various files in drivers/gpu/drm/amd/amdgpu like:
```
amdgpu_amdkfd_gfx_v8.c:241:15: error: allocation of insufficient size ‘4’ for type ‘uint32_t[2]’ {aka ‘unsigned int[2]'} with size ‘8’ [-Werror=alloc-size]
```
This is because each HQD_N_REGS is actually a uint32_t[2]. Move the * 2 to
the size argument so GCC sees we're allocating enough.
Originally did 'sizeof(uint32_t) * 2' for the size but a friend suggested
'sizeof(**dump)' better communicates the intent.
Link: https://lore.kernel.org/all/87wmuwo7i3.fsf@gentoo.org/
Signed-off-by: Sam James <sam@gentoo.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gc_9_4_3.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c | 4 ++--
5 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
index 625db444df1c..0ba15dcbe4e1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
@@ -200,7 +200,7 @@ int kgd_arcturus_hqd_sdma_dump(struct amdgpu_device *adev,
#undef HQD_N_REGS
#define HQD_N_REGS (19+6+7+10)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gc_9_4_3.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gc_9_4_3.c
index 490c8f5ddb60..ca7238b5535b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gc_9_4_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gc_9_4_3.c
@@ -141,7 +141,7 @@ static int kgd_gfx_v9_4_3_hqd_sdma_dump(struct amdgpu_device *adev,
(*dump)[i++][1] = RREG32(addr); \
} while (0)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c
index 6bf448ab3dff..ca4a6b82817f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v7.c
@@ -214,7 +214,7 @@ static int kgd_hqd_dump(struct amdgpu_device *adev,
(*dump)[i++][1] = RREG32(addr); \
} while (0)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
@@ -301,7 +301,7 @@ static int kgd_hqd_sdma_dump(struct amdgpu_device *adev,
#undef HQD_N_REGS
#define HQD_N_REGS (19+4)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
index cd06e4a6d1da..0f3e2944edd7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c
@@ -238,7 +238,7 @@ static int kgd_hqd_dump(struct amdgpu_device *adev,
(*dump)[i++][1] = RREG32(addr); \
} while (0)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
@@ -324,7 +324,7 @@ static int kgd_hqd_sdma_dump(struct amdgpu_device *adev,
#undef HQD_N_REGS
#define HQD_N_REGS (19+4+2+3+7)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
index 51011e8ee90d..a3355b90aac5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v9.c
@@ -365,7 +365,7 @@ int kgd_gfx_v9_hqd_dump(struct amdgpu_device *adev,
(*dump)[i++][1] = RREG32(addr); \
} while (0)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
@@ -462,7 +462,7 @@ static int kgd_hqd_sdma_dump(struct amdgpu_device *adev,
#undef HQD_N_REGS
#define HQD_N_REGS (19+6+7+10)
- *dump = kmalloc_array(HQD_N_REGS * 2, sizeof(uint32_t), GFP_KERNEL);
+ *dump = kmalloc_array(HQD_N_REGS, sizeof(**dump), GFP_KERNEL);
if (*dump == NULL)
return -ENOMEM;
--
2.42.1
next prev parent reply other threads:[~2023-11-05 16:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-05 9:45 amdgpu_amdkfd_gfx* triggers new -Walloc-size warnings in GCC 14 Sam James
2023-11-05 16:06 ` Sam James [this message]
2023-11-06 18:48 ` [PATCH] amdgpu: Adjust kmalloc_array calls for new -Walloc-size Alex Deucher
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