From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Christian König" <ckoenig.leichtzumerken@gmail.com>,
"Christian König" <christian.koenig@amd.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Sasha Levin" <sashal@kernel.org>,
Xinhui.Pan@amd.com, airlied@linux.ie, daniel@ffwll.ch,
shashank.sharma@amd.com, Ramesh.Errabolu@amd.com,
tzimmermann@suse.de, nirmoy.das@amd.com,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 5.15 02/16] drm/amdgpu: fix dropped backing store handling in amdgpu_dma_buf_move_notify
Date: Mon, 3 Jan 2022 12:28:35 -0500 [thread overview]
Message-ID: <20220103172849.1612731-2-sashal@kernel.org> (raw)
In-Reply-To: <20220103172849.1612731-1-sashal@kernel.org>
From: Christian König <ckoenig.leichtzumerken@gmail.com>
[ Upstream commit fc74881c28d314b10efac016ef49df4ff40b8b97 ]
bo->tbo.resource can now be NULL.
Signed-off-by: Christian König <christian.koenig@amd.com>
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1811
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211210083927.1754-1-christian.koenig@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
index ae6ab93c868b8..7444484a12bf8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c
@@ -384,7 +384,7 @@ amdgpu_dma_buf_move_notify(struct dma_buf_attachment *attach)
struct amdgpu_vm_bo_base *bo_base;
int r;
- if (bo->tbo.resource->mem_type == TTM_PL_SYSTEM)
+ if (!bo->tbo.resource || bo->tbo.resource->mem_type == TTM_PL_SYSTEM)
return;
r = ttm_bo_validate(&bo->tbo, &placement, &ctx);
--
2.34.1
next prev parent reply other threads:[~2022-01-03 17:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-03 17:28 [PATCH AUTOSEL 5.15 01/16] auxdisplay: charlcd: checking for pointer reference before dereferencing Sasha Levin
2022-01-03 17:28 ` Sasha Levin [this message]
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 03/16] drm/amd/pm: Fix xgmi link control on aldebaran Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 04/16] usb: mtu3: fix interval value for intr and isoc Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 05/16] scsi: libiscsi: Fix UAF in iscsi_conn_get_param()/iscsi_conn_teardown() Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 06/16] ip6_vti: initialize __ip6_tnl_parm struct in vti6_siocdevprivate Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 07/16] net: udp: fix alignment problem in udp4_seq_show() Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 08/16] atlantic: Fix buff_ring OOB in aq_ring_rx_clean Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 09/16] drm/amd/pm: skip setting gfx cgpg in the s0ix suspend-resume Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 10/16] drm/amdgpu: always reset the asic in suspend (v2) Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 11/16] drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 12/16] mISDN: change function names to avoid conflicts Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 13/16] drm/amd/display: fix B0 TMDS deepcolor no dislay issue Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 14/16] drm/amd/display: Added power down for DCN10 Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 15/16] ipv6: raw: check passed optlen before reading Sasha Levin
2022-01-03 17:28 ` [PATCH AUTOSEL 5.15 16/16] userfaultfd/selftests: fix hugetlb area allocations Sasha Levin
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