linux-kernel - [PATCH AUTOSEL 5.19 075/105] drm/amdgpu: Call trace info was found in dmesg when loading amdgpu

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Date:   Thu, 11 Aug 2022 11:27:59 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     lin cao <lin.cao@....com>, Jingwen Chen <Jingwen.Chen2@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>, evan.quan@....com,
        christian.koenig@....com, Xinhui.Pan@....com, airlied@...ux.ie,
        daniel@...ll.ch, lijo.lazar@....com, guchun.chen@....com,
        luben.tuikov@....com, sathishkumar.sundararaju@....com,
        danijel.slivka@....com, Mohammadzafar.ziya@....com,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 5.19 075/105] drm/amdgpu: Call trace info was found in dmesg when loading amdgpu

From: lin cao <lin.cao@....com>

[ Upstream commit 748262eb400e809aa13e3485f4983c3db3d0ebb3 ]

In the case of SRIOV, the register smnMp1_PMI_3_FIFO will get an invalid
value which will cause the "shift out of bound". In Ubuntu22.04, this
issue will be checked an related call trace will be reported in dmesg.

Signed-off-by: lin cao <lin.cao@....com>
Reviewed-by: Jingwen Chen <Jingwen.Chen2@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
index 78f3d9e722bb..4db7e32efd08 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -886,6 +886,7 @@ static void sienna_cichlid_stb_init(struct smu_context *smu);
 
 static int sienna_cichlid_init_smc_tables(struct smu_context *smu)
 {
+	struct amdgpu_device *adev = smu->adev;
 	int ret = 0;
 
 	ret = sienna_cichlid_tables_init(smu);
@@ -896,7 +897,8 @@ static int sienna_cichlid_init_smc_tables(struct smu_context *smu)
 	if (ret)
 		return ret;
 
-	sienna_cichlid_stb_init(smu);
+	if (!amdgpu_sriov_vf(adev))
+		sienna_cichlid_stb_init(smu);
 
 	return smu_v11_0_init_smc_tables(smu);
 }
-- 
2.35.1