From: Denis Arefev <arefev@swemel.ru>
To: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>,
"avid Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] nbio_v7_4: Add pointer check
Date: Thu, 10 Nov 2022 15:28:48 +0300 [thread overview]
Message-ID: <20221110122848.20207-1-arefev@swemel.ru> (raw)
Return value of a function 'amdgpu_ras_find_obj' is dereferenced at nbio_v7_4.c:325 without checking for null
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Denis Arefev <arefev@swemel.ru>
---
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index eadc9526d33f..0f2ac99de864 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -304,6 +304,9 @@ static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device
struct ras_err_data err_data = {0, 0, 0, NULL};
struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
+ if (!obj)
+ return;
bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL);
if (REG_GET_FIELD(bif_doorbell_intr_cntl,
BIF_DOORBELL_INT_CNTL, RAS_CNTLR_INTERRUPT_STATUS)) {
--
2.25.1
next reply other threads:[~2022-11-10 12:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-10 12:28 Denis Arefev [this message]
2022-11-10 21:42 ` nbio_v7_4: Add pointer check Limonciello, Mario
2022-11-11 7:41 [PATCH] " Denis Arefev
2022-11-11 9:03 ` Zhang, Hawking
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