From: Roman Demidov <roman.demidov.nn@gmail.com>
To: stable@vger.kernel.org, Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Roman Demidov" <roman.demidov.nn@gmail.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>, "Leo Liu" <leo.liu@amd.com>,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org,
"Yinjie Yao" <yinjie.yao@amd.com>,
"Sasha Levin" <sashal@kernel.org>
Subject: [PATCH 5.15/6.1] drm/amdgpu/jpeg: set no_user_fence for JPEG v2.5 ring
Date: Wed, 7 Oct 2026 16:26:46 +0300 [thread overview]
Message-ID: <20261007132647.121360-1-roman.demidov.nn@gmail.com> (raw)
From: Yinjie Yao <yinjie.yao@amd.com>
commit 79405e774ede411c6b47ed41c651e40b92de64a2 upstream.
JPEG rings do not support 64-bit user fence writes, reject CS
submissions with user fences.
Fixes: 14f43e8f88c5 ("drm/amdgpu: move JPEG2.5 out from VCN2.5")
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 3216a7f4e2642bda5fd14f57586e835ae9202587)
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Roman Demidov <roman.demidov.nn@gmail.com>
---
Backport fix for CVE-2026-63847
drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c
index f87d0f6ffc93..a094dd138c0d 100644
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c
@@ -641,6 +641,7 @@ static const struct amd_ip_funcs jpeg_v2_6_ip_funcs = {
static const struct amdgpu_ring_funcs jpeg_v2_5_dec_ring_vm_funcs = {
.type = AMDGPU_RING_TYPE_VCN_JPEG,
.align_mask = 0xf,
+ .no_user_fence = true,
.vmhub = AMDGPU_MMHUB_1,
.get_rptr = jpeg_v2_5_dec_ring_get_rptr,
.get_wptr = jpeg_v2_5_dec_ring_get_wptr,
@@ -671,6 +672,7 @@ static const struct amdgpu_ring_funcs jpeg_v2_5_dec_ring_vm_funcs = {
static const struct amdgpu_ring_funcs jpeg_v2_6_dec_ring_vm_funcs = {
.type = AMDGPU_RING_TYPE_VCN_JPEG,
.align_mask = 0xf,
+ .no_user_fence = true,
.vmhub = AMDGPU_MMHUB_0,
.get_rptr = jpeg_v2_5_dec_ring_get_rptr,
.get_wptr = jpeg_v2_5_dec_ring_get_wptr,
--
2.53.0
reply other threads:[~2026-10-07 13:26 UTC|newest]
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