From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 F3754367F58; Wed, 20 May 2026 16:38:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779295115; cv=none; b=aNp6ByX6RPvMnlUc3cvTqQMzEy1NbwrsG/thqVzxxSwVS5MHgLJwYAnEPXtOhouYQNJA8Z/Bkhs1icwclQc11Q/mPAdOXJ1mSo6MV3CDf1UvGLIMuIpyjig7YKIG9tuQZZjN4oPlEkF+cjkywNyCfvb3R7K2RF1CgOtZmUHVJcs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779295115; c=relaxed/simple; bh=BfS6RJMQA0+yBzq6q3KBZiwEoa1j3AUN56z5u1ygozc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ds87MeOGiynqxo3yZZ4ln9ropNmC74cG0X/ViBZrxQNFZU5/XCFhva/ozrVsrvbcjWV7a+jtY0Zd2C0p1oa8pQy9xZ92hoV/J2Jmd9EhkwUeMfJDgaonGhCSqoCClSu/4CFOSw7plUXNg4hCEPnHbn6UrkiLfhZar4UTPqxj4o0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sg0lNv/W; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sg0lNv/W" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6C1D61F000E9; Wed, 20 May 2026 16:38:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779295113; bh=5bonZrYHwJAF/UGeIrA4fRG9RSfL01I27VEMmGGMAFs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=sg0lNv/WE5bVWmB6247b72fb3JDY+GS/id69DFdzNHAHU4T3+omE9qlw3h2ZaHJNS lvBHZT0dbM+0OB2+5K5Ajl1wnusMFz7PCUPTi9j+DAanp9atQMtcek2Nq5raOj2Iqb dbee9NrFvG7+C1NSu4znpcM8reHFFe+6MvDDd/Wg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, YiPeng Chai , Tao Zhou , Hawking Zhang , =?UTF-8?q?Christian=20K=C3=B6nig?= , Alex Deucher , Srinivasan Shanmugam , Sasha Levin Subject: [PATCH 7.0 0294/1146] drm/amd/ras: Fix NULL deref in ras_core_ras_interrupt_detected() Date: Wed, 20 May 2026 18:09:04 +0200 Message-ID: <20260520162154.866978066@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162148.390695140@linuxfoundation.org> References: <20260520162148.390695140@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 7.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Srinivasan Shanmugam [ Upstream commit 6b606216e03fa2b53cc179d8383b683a140fe6e1 ] Fixes a NULL pointer dereference when ras_core is NULL and ras_core->dev is accessed in the error path. Fixes: 13c91b5b4378 ("drm/amd/ras: Add rascore unified interface function") Reported by: Dan Carpenter Cc: YiPeng Chai Cc: Tao Zhou Cc: Hawking Zhang Cc: Christian König Cc: Alex Deucher Signed-off-by: Srinivasan Shanmugam Reviewed-by: Tao Zhou Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/ras/rascore/ras_core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/ras/rascore/ras_core.c b/drivers/gpu/drm/amd/ras/rascore/ras_core.c index 9df05b3963edb..b81741a339b1b 100644 --- a/drivers/gpu/drm/amd/ras/rascore/ras_core.c +++ b/drivers/gpu/drm/amd/ras/rascore/ras_core.c @@ -530,7 +530,9 @@ bool ras_core_ras_interrupt_detected(struct ras_core_context *ras_core) ras_core->sys_fn->detect_ras_interrupt) return ras_core->sys_fn->detect_ras_interrupt(ras_core); - RAS_DEV_ERR(ras_core->dev, "Failed to detect ras interrupt!\n"); + if (ras_core && ras_core->dev) + RAS_DEV_ERR(ras_core->dev, "Failed to detect ras interrupt!\n"); + return false; } -- 2.53.0