* [PATCH 5.10/5.15/6.1] drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring
@ 2026-10-07 13:32 Roman Demidov
0 siblings, 0 replies; only message in thread
From: Roman Demidov @ 2026-10-07 13:32 UTC (permalink / raw)
To: stable, Greg Kroah-Hartman
Cc: Roman Demidov, Alex Deucher, Christian König, David Airlie,
Daniel Vetter, Leo Liu, James Zhu, amd-gfx, dri-devel,
linux-kernel, lvc-project, Yinjie Yao, Sasha Levin
From: Yinjie Yao <yinjie.yao@amd.com>
commit a2baf12eec41f246689e6a3f8619af1200031576 upstream.
JPEG rings do not support 64-bit user fence writes, reject CS
submissions with user fences.
Fixes: dfd57dbf44dd ("drm/amdgpu: add JPEG3.0 support for Sienna_Cichlid")
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Yinjie Yao <yinjie.yao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 4d7d774f100efb5089c86a1fb8c5bf47c63fc9ef)
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Roman Demidov <roman.demidov.nn@gmail.com>
---
Backport fix for CVE-2026-63846
drivers/gpu/drm/amd/amdgpu/jpeg_v3_0.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/jpeg_v3_0.c b/drivers/gpu/drm/amd/amdgpu/jpeg_v3_0.c
index 323d68b2124f..f1957d4fa7a8 100644
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v3_0.c
@@ -560,6 +560,7 @@ static const struct amd_ip_funcs jpeg_v3_0_ip_funcs = {
static const struct amdgpu_ring_funcs jpeg_v3_0_dec_ring_vm_funcs = {
.type = AMDGPU_RING_TYPE_VCN_JPEG,
.align_mask = 0xf,
+ .no_user_fence = true,
.vmhub = AMDGPU_MMHUB_0,
.get_rptr = jpeg_v3_0_dec_ring_get_rptr,
.get_wptr = jpeg_v3_0_dec_ring_get_wptr,
--
2.53.0
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2026-10-07 13:32 [PATCH 5.10/5.15/6.1] drm/amdgpu/jpeg: set no_user_fence for JPEG v3.0 ring Roman Demidov
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