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3124 discussions

[PATCH RFC 0/3] Add a module parameter to adjust kfence objects

by Peng Liu

This series make KFENCE to be more convenient to adjust parameters in not only debug process but also production situations. In different production and development stage, the demands of memory and CPU limitations for KFENCE is quite different. In order to satisfy these demands with a uniform kernel release, dynamically adjust KFENCE parameters is needed. Signed-off-by: Peng Liu <liupeng256(a)huawei.com> Peng Liu (3): kfence: Add a module parameter to adjust kfence objects kfence: Optimize branches prediction when sample interval is zero kfence: Make test case compatible with run time set sample interval Documentation/dev-tools/kfence.rst | 14 ++-- include/linux/kfence.h | 10 ++- mm/kfence/core.c | 113 ++++++++++++++++++++++++----- mm/kfence/kfence.h | 2 +- mm/kfence/kfence_test.c | 10 +-- 5 files changed, 116 insertions(+), 33 deletions(-) -- 2.18.0.huawei.25

3 years, 9 months

[PATCH] drm/msm: Fix wrong size calculation

by Xianting Tian

For example, memory-region in .dts as below, reg = <0x0 0x50000000 0x0 0x20000000> We can get below values, struct resource r; r.start = 0x50000000; r.end = 0x6fffffff; So the size should be: size = r.end - r.start + 1 = 0x20000000 Signed-off-by: Xianting Tian <xianting.tian(a)linux.alibaba.com> --- drivers/gpu/drm/msm/msm_drv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 892c04365..f04a2337d 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -466,7 +466,7 @@ static int msm_init_vram(struct drm_device *dev) of_node_put(node); if (ret) return ret; - size = r.end - r.start; + size = r.end - r.start + 1; DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start); /* if we have no IOMMU, then we need to use carveout allocator. -- 2.17.1

3 years, 9 months

[PATCH 5.4 027/320] dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()

by Greg Kroah-Hartman

From: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> commit 95d35838880fb040ccb9fe4a48816bd0c8b62df5 upstream. If a dma_fence_array is reported signaled by a call to dma_fence_is_signaled(), it may leak the PENDING_ERROR status. Fix this by clearing the PENDING_ERROR status if we return true in dma_fence_array_signaled(). v2: - Update Cc list, and add R-b. Fixes: 1f70b8b812f3 ("dma-fence: Propagate errors to dma-fence-array container") Cc: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal(a)linaro.org> Cc: Gustavo Padovan <gustavo(a)padovan.org> Cc: Christian König <christian.koenig(a)amd.com> Cc: "Christian König" <christian.koenig(a)amd.com> Cc: linux-media(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Cc: linaro-mm-sig(a)lists.linaro.org Cc: <stable(a)vger.kernel.org> # v5.4+ Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211129152727.448908-1-thoma… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/dma-buf/dma-fence-array.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -104,7 +104,11 @@ static bool dma_fence_array_signaled(str { struct dma_fence_array *array = to_dma_fence_array(fence); - return atomic_read(&array->num_pending) <= 0; + if (atomic_read(&array->num_pending) > 0) + return false; + + dma_fence_array_clear_pending_error(array); + return true; } static void dma_fence_array_release(struct dma_fence *fence)

3 years, 9 months

[PATCH 5.10 035/563] dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()

by Greg Kroah-Hartman

3 years, 9 months

[PATCH 5.15 068/846] dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()

by Greg Kroah-Hartman

3 years, 9 months

[PATCH 5.16 0073/1039] dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()

by Greg Kroah-Hartman

3 years, 9 months

Patch "dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()" has been added to the 5.10-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. From 95d35838880fb040ccb9fe4a48816bd0c8b62df5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= <thomas.hellstrom(a)linux.intel.com> Date: Mon, 29 Nov 2021 16:27:27 +0100 Subject: dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> commit 95d35838880fb040ccb9fe4a48816bd0c8b62df5 upstream. If a dma_fence_array is reported signaled by a call to dma_fence_is_signaled(), it may leak the PENDING_ERROR status. Fix this by clearing the PENDING_ERROR status if we return true in dma_fence_array_signaled(). v2: - Update Cc list, and add R-b. Fixes: 1f70b8b812f3 ("dma-fence: Propagate errors to dma-fence-array container") Cc: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal(a)linaro.org> Cc: Gustavo Padovan <gustavo(a)padovan.org> Cc: Christian König <christian.koenig(a)amd.com> Cc: "Christian König" <christian.koenig(a)amd.com> Cc: linux-media(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Cc: linaro-mm-sig(a)lists.linaro.org Cc: <stable(a)vger.kernel.org> # v5.4+ Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211129152727.448908-1-thoma… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/dma-buf/dma-fence-array.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -104,7 +104,11 @@ static bool dma_fence_array_signaled(str { struct dma_fence_array *array = to_dma_fence_array(fence); - return atomic_read(&array->num_pending) <= 0; + if (atomic_read(&array->num_pending) > 0) + return false; + + dma_fence_array_clear_pending_error(array); + return true; } static void dma_fence_array_release(struct dma_fence *fence) Patches currently in stable-queue which might be from thomas.hellstrom(a)linux.intel.com are queue-5.10/dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch

3 years, 9 months

Patch "dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()" has been added to the 5.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. From 95d35838880fb040ccb9fe4a48816bd0c8b62df5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= <thomas.hellstrom(a)linux.intel.com> Date: Mon, 29 Nov 2021 16:27:27 +0100 Subject: dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> commit 95d35838880fb040ccb9fe4a48816bd0c8b62df5 upstream. If a dma_fence_array is reported signaled by a call to dma_fence_is_signaled(), it may leak the PENDING_ERROR status. Fix this by clearing the PENDING_ERROR status if we return true in dma_fence_array_signaled(). v2: - Update Cc list, and add R-b. Fixes: 1f70b8b812f3 ("dma-fence: Propagate errors to dma-fence-array container") Cc: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal(a)linaro.org> Cc: Gustavo Padovan <gustavo(a)padovan.org> Cc: Christian König <christian.koenig(a)amd.com> Cc: "Christian König" <christian.koenig(a)amd.com> Cc: linux-media(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Cc: linaro-mm-sig(a)lists.linaro.org Cc: <stable(a)vger.kernel.org> # v5.4+ Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211129152727.448908-1-thoma… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/dma-buf/dma-fence-array.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -104,7 +104,11 @@ static bool dma_fence_array_signaled(str { struct dma_fence_array *array = to_dma_fence_array(fence); - return atomic_read(&array->num_pending) <= 0; + if (atomic_read(&array->num_pending) > 0) + return false; + + dma_fence_array_clear_pending_error(array); + return true; } static void dma_fence_array_release(struct dma_fence *fence) Patches currently in stable-queue which might be from thomas.hellstrom(a)linux.intel.com are queue-5.4/dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch

3 years, 9 months

Patch "dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()" has been added to the 5.16-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() to the 5.16-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch and it can be found in the queue-5.16 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. From 95d35838880fb040ccb9fe4a48816bd0c8b62df5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= <thomas.hellstrom(a)linux.intel.com> Date: Mon, 29 Nov 2021 16:27:27 +0100 Subject: dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> commit 95d35838880fb040ccb9fe4a48816bd0c8b62df5 upstream. If a dma_fence_array is reported signaled by a call to dma_fence_is_signaled(), it may leak the PENDING_ERROR status. Fix this by clearing the PENDING_ERROR status if we return true in dma_fence_array_signaled(). v2: - Update Cc list, and add R-b. Fixes: 1f70b8b812f3 ("dma-fence: Propagate errors to dma-fence-array container") Cc: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal(a)linaro.org> Cc: Gustavo Padovan <gustavo(a)padovan.org> Cc: Christian König <christian.koenig(a)amd.com> Cc: "Christian König" <christian.koenig(a)amd.com> Cc: linux-media(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Cc: linaro-mm-sig(a)lists.linaro.org Cc: <stable(a)vger.kernel.org> # v5.4+ Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211129152727.448908-1-thoma… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/dma-buf/dma-fence-array.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -104,7 +104,11 @@ static bool dma_fence_array_signaled(str { struct dma_fence_array *array = to_dma_fence_array(fence); - return atomic_read(&array->num_pending) <= 0; + if (atomic_read(&array->num_pending) > 0) + return false; + + dma_fence_array_clear_pending_error(array); + return true; } static void dma_fence_array_release(struct dma_fence *fence) Patches currently in stable-queue which might be from thomas.hellstrom(a)linux.intel.com are queue-5.16/dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch

3 years, 9 months

Patch "dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled()" has been added to the 5.15-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. From 95d35838880fb040ccb9fe4a48816bd0c8b62df5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= <thomas.hellstrom(a)linux.intel.com> Date: Mon, 29 Nov 2021 16:27:27 +0100 Subject: dma_fence_array: Fix PENDING_ERROR leak in dma_fence_array_signaled() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> commit 95d35838880fb040ccb9fe4a48816bd0c8b62df5 upstream. If a dma_fence_array is reported signaled by a call to dma_fence_is_signaled(), it may leak the PENDING_ERROR status. Fix this by clearing the PENDING_ERROR status if we return true in dma_fence_array_signaled(). v2: - Update Cc list, and add R-b. Fixes: 1f70b8b812f3 ("dma-fence: Propagate errors to dma-fence-array container") Cc: Chris Wilson <chris(a)chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal(a)linaro.org> Cc: Gustavo Padovan <gustavo(a)padovan.org> Cc: Christian König <christian.koenig(a)amd.com> Cc: "Christian König" <christian.koenig(a)amd.com> Cc: linux-media(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Cc: linaro-mm-sig(a)lists.linaro.org Cc: <stable(a)vger.kernel.org> # v5.4+ Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Reviewed-by: Christian König <christian.koenig(a)amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211129152727.448908-1-thoma… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/dma-buf/dma-fence-array.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -104,7 +104,11 @@ static bool dma_fence_array_signaled(str { struct dma_fence_array *array = to_dma_fence_array(fence); - return atomic_read(&array->num_pending) <= 0; + if (atomic_read(&array->num_pending) > 0) + return false; + + dma_fence_array_clear_pending_error(array); + return true; } static void dma_fence_array_release(struct dma_fence *fence) Patches currently in stable-queue which might be from thomas.hellstrom(a)linux.intel.com are queue-5.15/dma_fence_array-fix-pending_error-leak-in-dma_fence_array_signaled.patch

3 years, 9 months

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