From: Bob Zhou bob.zhou@amd.com

stable inclusion from stable-v5.10.220 commit 8112fa72b7f139052843ff484130d6f97e9f052f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IA8AED CVE: CVE-2024-39471

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=l...

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commit 8b2faf1a4f3b6c748c0da36cda865a226534d520 upstream.

if the sdma_v4_0_irq_id_to_seq return -EINVAL, the process should be stop to avoid out-of-bounds read, so directly return -EINVAL.

Signed-off-by: Bob Zhou bob.zhou@amd.com Acked-by: Christian König christian.koenig@amd.com Reviewed-by: Le Ma le.ma@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Wenyu Huang huangwenyu5@huawei.com --- drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c index dbcaef3f35da9..c54834ed8751e 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c @@ -2073,6 +2073,9 @@ static int sdma_v4_0_process_trap_irq(struct amdgpu_device *adev,

DRM_DEBUG("IH: SDMA trap\n"); instance = sdma_v4_0_irq_id_to_seq(entry->client_id); + if (instance < 0) + return instance; + switch (entry->ring_id) { case 0: amdgpu_fence_process(&adev->sdma.instance[instance].ring);