From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F43C3F0750; Tue, 19 May 2026 16:08:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779206906; cv=none; b=c8MN9P/JG304GGh8E56iKvC1fbNYgbb2m1L6TBXVfiL0EAoah1A1I9f5t8x9pVneufu97WeKYOdfVJQln/f2SONEKIwwD1axgxXQXnxEGLvhg5YknfvsQHUw/S6vhYlGE3WuBYxyHYFokIg46F6+nccBwl4ZxROTfLC0yt5xstk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779206906; c=relaxed/simple; bh=JMaW4hqrbwsNQNbegT85fZ2gaCvhjDdo60FQavqvwXc=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=lBRf3gRkW+v2OOmxE3QepItXNUFpvbNtNQOLTfc6sjOGTEekZZHzYhjn895V3gcBHxhgSNyrW6d79tZcMWgwNJsgb7zbPHy6gsQUOesywqE5nbt6BmoDqxy+TO9LM/Z7p8HY7K8+dCnYjFSr5oAnGZkowMIKoAkD3LkYfjKzB5U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Jcc7OVoE; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Jcc7OVoE" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99D66C2BCB3; Tue, 19 May 2026 16:08:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779206906; bh=JMaW4hqrbwsNQNbegT85fZ2gaCvhjDdo60FQavqvwXc=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=Jcc7OVoE3JRnYMPKGDgL13sAzYMamlppzuKhImtT2XkXF0Tg2Bo15E+lBJPGiMemu b/K1uvbyFruTC0SmamOWRLmzIaUQBAAG1sWjjYxYWBdTkqtxS4h9ePVRDY2fh3z4I7 cXZaOdk3+i7TVEb9R+6vKR5vZsMycXkBlyF64KzWL959fxCupb+aL3Jw3Utbz+UuuE wxc/htWIIy67A8e1Ym+KHfUZjDBpjYGbUUAD6wL8bUZ5wdTPiqIvV0M6O7dANppS3b 75epNqq6FrOD5ztTgqMdD/ikNuJw0U/yqgpQyKqEpPeXrSQ++36W19vdK26lgTcjpU DM8NTcmSDgsNw== From: Srinivas Kandagatla To: Amol Maheshwari , Arnd Bergmann , Greg Kroah-Hartman , Thierry Escande , Mukesh Ojha Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org In-Reply-To: <20260504171701.18164-1-mukesh.ojha@oss.qualcomm.com> References: <20260504171701.18164-1-mukesh.ojha@oss.qualcomm.com> Subject: Re: [PATCH v2 1/2] misc: fastrpc: Fix NULL pointer dereference in rpmsg callback Message-Id: <177920690436.52506.3867617056043903009.b4-ty@kernel.org> Date: Tue, 19 May 2026 17:08:24 +0100 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-Mailer: b4 0.14.3 On Mon, 04 May 2026 22:47:00 +0530, Mukesh Ojha wrote: > A NULL pointer dereference was observed on Hawi at boot when the DSP > sends a glink message before fastrpc_rpmsg_probe() has completed > initialization: > > Unable to handle kernel NULL pointer dereference at virtual address 0000000000000178 > pc : _raw_spin_lock_irqsave+0x34/0x8c > lr : fastrpc_rpmsg_callback+0x3c/0xcc [fastrpc] > ... > Call trace: > _raw_spin_lock_irqsave+0x34/0x8c (P) > fastrpc_rpmsg_callback+0x3c/0xcc [fastrpc] > qcom_glink_native_rx+0x538/0x6a4 > qcom_glink_smem_intr+0x14/0x24 [qcom_glink_smem] > > [...] Applied, thanks! [1/2] misc: fastrpc: Fix NULL pointer dereference in rpmsg callback commit: 4d24965e0ae82ae4b49c4d739d030ee23a1779d4 [2/2] misc: fastrpc: Move prints outside spinlock in fastrpc_cb_probe commit: 8d712bcdd1ef73bf790f01039508fb4e9c076bb1 Best regards, -- Srinivas Kandagatla