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Message-Id: <20241113121030.2405520-1-vamsi-krishna.brahmajosyula@broadcom.com>
Date: Wed, 13 Nov 2024 12:10:30 +0000
From: Vamsi Krishna Brahmajosyula <vamsi-krishna.brahmajosyula@...adcom.com>
To: stable@...r.kernel.org,
gregkh@...uxfoundation.org
Cc: Philip.Yang@....com,
Felix.Kuehling@....com,
alexander.deucher@....com,
christian.koenig@....com,
Xinhui.Pan@....com,
airlied@...il.com,
daniel@...ll.ch,
amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
ajay.kaher@...adcom.com,
alexey.makhalov@...adcom.com,
vasavi.sirnapalli@...adcom.com,
Felix Kuehling <felix.kuehling@....com>,
Sasha Levin <sashal@...nel.org>,
Vamsi Krishna Brahmajosyula <vamsi-krishna.brahmajosyula@...adcom.com>
Subject: [PATCH v6.1] drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer
From: Philip Yang <Philip.Yang@....com>
[ Upstream commit c86ad39140bbcb9dc75a10046c2221f657e8083b ]
Pass pointer reference to amdgpu_bo_unref to clear the correct pointer,
otherwise amdgpu_bo_unref clear the local variable, the original pointer
not set to NULL, this could cause use-after-free bug.
Signed-off-by: Philip Yang <Philip.Yang@....com>
Reviewed-by: Felix Kuehling <felix.kuehling@....com>
Acked-by: Christian König <christian.koenig@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
Signed-off-by: Vamsi Krishna Brahmajosyula <vamsi-krishna.brahmajosyula@...adcom.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 14 +++++++-------
drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_device.c | 4 ++--
.../gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c | 2 +-
drivers/gpu/drm/amd/amdkfd/kfd_process.c | 2 +-
.../gpu/drm/amd/amdkfd/kfd_process_queue_manager.c | 4 ++--
8 files changed, 16 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index 5d9a34601a1a..c31e5f9d63da 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -344,15 +344,15 @@ int amdgpu_amdkfd_alloc_gtt_mem(struct amdgpu_device *adev, size_t size,
return r;
}
-void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void *mem_obj)
+void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj)
{
- struct amdgpu_bo *bo = (struct amdgpu_bo *) mem_obj;
+ struct amdgpu_bo **bo = (struct amdgpu_bo **) mem_obj;
- amdgpu_bo_reserve(bo, true);
- amdgpu_bo_kunmap(bo);
- amdgpu_bo_unpin(bo);
- amdgpu_bo_unreserve(bo);
- amdgpu_bo_unref(&(bo));
+ amdgpu_bo_reserve(*bo, true);
+ amdgpu_bo_kunmap(*bo);
+ amdgpu_bo_unpin(*bo);
+ amdgpu_bo_unreserve(*bo);
+ amdgpu_bo_unref(bo);
}
int amdgpu_amdkfd_alloc_gws(struct amdgpu_device *adev, size_t size,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
index 4b694886715c..c7672a1d1560 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h
@@ -210,7 +210,7 @@ int amdgpu_amdkfd_evict_userptr(struct kgd_mem *mem, struct mm_struct *mm)
int amdgpu_amdkfd_alloc_gtt_mem(struct amdgpu_device *adev, size_t size,
void **mem_obj, uint64_t *gpu_addr,
void **cpu_ptr, bool mqd_gfx9);
-void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void *mem_obj);
+void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj);
int amdgpu_amdkfd_alloc_gws(struct amdgpu_device *adev, size_t size,
void **mem_obj);
void amdgpu_amdkfd_free_gws(struct amdgpu_device *adev, void *mem_obj);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index e3cd66c4d95d..f83574107eb8 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -408,7 +408,7 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p,
err_create_queue:
if (wptr_bo)
- amdgpu_amdkfd_free_gtt_mem(dev->adev, wptr_bo);
+ amdgpu_amdkfd_free_gtt_mem(dev->adev, (void **)&wptr_bo);
err_wptr_map_gart:
err_alloc_doorbells:
err_bind_process:
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 27820f0a282d..e2c055abfea9 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -673,7 +673,7 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
kfd_doorbell_error:
kfd_gtt_sa_fini(kfd);
kfd_gtt_sa_init_error:
- amdgpu_amdkfd_free_gtt_mem(kfd->adev, kfd->gtt_mem);
+ amdgpu_amdkfd_free_gtt_mem(kfd->adev, &kfd->gtt_mem);
alloc_gtt_mem_failure:
if (kfd->gws)
amdgpu_amdkfd_free_gws(kfd->adev, kfd->gws);
@@ -693,7 +693,7 @@ void kgd2kfd_device_exit(struct kfd_dev *kfd)
kfd_doorbell_fini(kfd);
ida_destroy(&kfd->doorbell_ida);
kfd_gtt_sa_fini(kfd);
- amdgpu_amdkfd_free_gtt_mem(kfd->adev, kfd->gtt_mem);
+ amdgpu_amdkfd_free_gtt_mem(kfd->adev, &kfd->gtt_mem);
if (kfd->gws)
amdgpu_amdkfd_free_gws(kfd->adev, kfd->gws);
}
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index 1b7b29426480..3ab0a796af06 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -2392,7 +2392,7 @@ static void deallocate_hiq_sdma_mqd(struct kfd_dev *dev,
{
WARN(!mqd, "No hiq sdma mqd trunk to free");
- amdgpu_amdkfd_free_gtt_mem(dev->adev, mqd->gtt_mem);
+ amdgpu_amdkfd_free_gtt_mem(dev->adev, &mqd->gtt_mem);
}
void device_queue_manager_uninit(struct device_queue_manager *dqm)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
index 623ccd227b7d..c733d6888c30 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager.c
@@ -204,7 +204,7 @@ void kfd_free_mqd_cp(struct mqd_manager *mm, void *mqd,
struct kfd_mem_obj *mqd_mem_obj)
{
if (mqd_mem_obj->gtt_mem) {
- amdgpu_amdkfd_free_gtt_mem(mm->dev->adev, mqd_mem_obj->gtt_mem);
+ amdgpu_amdkfd_free_gtt_mem(mm->dev->adev, &mqd_mem_obj->gtt_mem);
kfree(mqd_mem_obj);
} else {
kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
index 5bca6abd55ae..9582c9449fff 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -1052,7 +1052,7 @@ static void kfd_process_destroy_pdds(struct kfd_process *p)
if (pdd->dev->shared_resources.enable_mes)
amdgpu_amdkfd_free_gtt_mem(pdd->dev->adev,
- pdd->proc_ctx_bo);
+ &pdd->proc_ctx_bo);
/*
* before destroying pdd, make sure to report availability
* for auto suspend
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
index 99aa8a8399d6..1918a3c06ac8 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c
@@ -441,9 +441,9 @@ int pqm_destroy_queue(struct process_queue_manager *pqm, unsigned int qid)
if (dev->shared_resources.enable_mes) {
amdgpu_amdkfd_free_gtt_mem(dev->adev,
- pqn->q->gang_ctx_bo);
+ &pqn->q->gang_ctx_bo);
if (pqn->q->wptr_bo)
- amdgpu_amdkfd_free_gtt_mem(dev->adev, pqn->q->wptr_bo);
+ amdgpu_amdkfd_free_gtt_mem(dev->adev, (void **)&pqn->q->wptr_bo);
}
uninit_queue(pqn->q);
--
2.39.4
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