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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-12bede54ba8sm28451931c88.10.2026.04.09.01.46.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2026 01:46:35 -0700 (PDT) From: Jingyi Wang Subject: [PATCH 0/2] remoteproc: improve robustness for rproc_attach fail cases Date: Thu, 09 Apr 2026 01:46:20 -0700 Message-Id: <20260409-rproc-attach-issue-v1-0-088a1c348e7a@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAFxn12kC/x3MQQrCQAxA0auUrA2kUynWq4iLdCY62UxLUkUov bvR5Vv8v4OLqThcux1M3uq6tEB/6iBXbk9BLWFIlEY604S22pKRt41zRXV/CSYZ0kRlLNQPEOF q8tDPf3q7h2d2wdm45fpbxeYCx/EFcj1lxHsAAAA= To: Bjorn Andersson , Mathieu Poirier Cc: aiqun.yu@oss.qualcomm.com, tingwei.zhang@oss.qualcomm.com, trilok.soni@oss.qualcomm.com, yijie.yang@oss.qualcomm.com, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Jingyi Wang X-Mailer: b4 0.15-dev-3d134 X-Developer-Signature: v=1; a=ed25519-sha256; t=1775724394; l=898; i=jingyi.wang@oss.qualcomm.com; s=20250911; h=from:subject:message-id; bh=AxNG1SIV7H7xzS5SJWkcy16sFVfw9C5CQd54+0oHFM8=; b=W82ysG/fLw5x67VsUNOLWoVhK9yS4LWwmdrxpu0R5Nu4a2CFpVFLTfBItA6+n6sLqzmXUPGkJ ycxe+9PT41jATvo1I6E2Yi9QAByupWGP1Qrr4deV7w+KTahlgRGfsDG X-Developer-Key: i=jingyi.wang@oss.qualcomm.com; a=ed25519; pk=PSoHZ6KbUss3IW8FPRVMHMK0Jkkr/jV347mBYJO3iLo= X-Proofpoint-ORIG-GUID: rwk0YK9d5-YLZAGzJPXSXSX1aZLvf3Ed X-Authority-Analysis: v=2.4 cv=fIIJG5ae c=1 sm=1 tr=0 ts=69d7676c cx=c_pps a=kVLUcbK0zfr7ocalXnG1qA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=tP0EvHTfAmNnroA1R7sA:9 a=QEXdDO2ut3YA:10 a=vr4QvYf-bLy2KjpDp97w:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDA5MDA3NyBTYWx0ZWRfX0Gg01IM8+vlZ zE0I06P3qJvZ49nuayA1pXb+jVLsuTRmsGsoQt23btgZdOWZ/8YaqZro9GKR1BadH6Bd7qOCeGV QkO2dRupb42yy4EpAE6axdLCdLqdD8KMFW+/Y0zKMgTNYyhncmOOf0lDGKebnkaYHhZieGgwGf0 eeNYY7LwNuxoLzCS9QkZ9v6i27uy5Z4EuEBQRfyvWfKybSzUCxVRFoODL5lQDSRZrbWYgJaMIAe 2eCBwGrukt7nYPH9RvQTbvyXywWjlxOb1j9SUc/FRbXU0gC26NPkVXE0bLxBBE89+94rAyLqLEu LzDMfBB1pX24S2C+PNWe0QN+sa7PT59Mhd8mY5+Muarbp+uZWZHO9mT/KD/2zScb0BDaGMn0Hqc Wh/FPoeVYoefWtiv4R1QNN4lfAYqeyT0w0uNDbtmEagL129Bav+uDjDGeJI3aNNwK/10YPFhOGs /6NUJAse+71CROYHOKw== X-Proofpoint-GUID: rwk0YK9d5-YLZAGzJPXSXSX1aZLvf3Ed X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-09_02,2026-04-08_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 impostorscore=0 clxscore=1015 adultscore=0 bulkscore=0 malwarescore=0 phishscore=0 spamscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604010000 definitions=main-2604090077 Failure in rproc_attach() path can cause issues like NULL pointer dereference when doing recovery and rproc_add() fail, improve the robustness for rproc_attach fail cases. Previous discussion: https://lore.kernel.org/all/9bdc6b6d-ddf0-47af-b1ed-8d1e75bf30c2@oss.qualcomm.com/ Signed-off-by: Jingyi Wang --- Jingyi Wang (2): remoteproc: core: Attach rproc asynchronously in rproc_add() path remoteproc: qcom: Check glink->edge in glink_subdev_stop() drivers/remoteproc/qcom_common.c | 3 +++ drivers/remoteproc/remoteproc_core.c | 20 ++++++++++++-------- include/linux/remoteproc.h | 1 + 3 files changed, 16 insertions(+), 8 deletions(-) --- base-commit: db7efce4ae23ad5e42f5f55428f529ff62b86fab change-id: 20260409-rproc-attach-issue-2e3290d6d013 Best regards, -- Jingyi Wang