From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f45.google.com (mail-pj1-f45.google.com [209.85.216.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 533212DECB2 for ; Sun, 19 Jul 2026 19:40:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784490015; cv=none; b=edp2uzpLDaLBAxxQuPcE/QmmpU20YMZwKx4tU5OeFnPjLgizMDqVOJCDj5PaWL9UFc6DOKj+cXXXz+1XfaI98BxHWAUskZjzGYURsDu4XUICAevNhceuWsmhxANjZuPMVuEF6qbpsrt70FNcvTD1xrEYHImAvHuLWZNQb2ZKziw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784490015; c=relaxed/simple; bh=aAF/T3Y8hCzCHm3lKRZATEXl7G4mF8YMLRaOfUViMSU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=KunMfxjlYGJ5GzNwA6iuw8via7jmbLbN0hTIuVOHIf+ayrUMTj5Wh/jKfSLWS5JBUtlwSzUrHnIjKoivtXvEmxJqFnQ4XNREa6m8vpCErf4dVDI5XRYtsl6UDZz4QMuF3kZY/wEVZZ4CgoN5qTOQxpjkgXRKptGj4wcXYq601o8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=QsWFIZSY; arc=none smtp.client-ip=209.85.216.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="QsWFIZSY" Received: by mail-pj1-f45.google.com with SMTP id 98e67ed59e1d1-381b831d535so7092414a91.0 for ; Sun, 19 Jul 2026 12:40:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1784490013; x=1785094813; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=G937/UZ24uNo9RJH5F1RTklgc3d2mOnFL2BoYh6wUVA=; b=QsWFIZSY6TLQeqdeHrO7maY9SEbFMNvCjaW+LQf9FVhqVig2g/AREwGIEGFYTA0SQx ZXx5ev5XJY2EJto90Ku55QlGY5wjvLZKpH7KsdqNQL+7iPBAYpPh90TlBhqhUZbm41ev ZB0x321uA63iKrpO+4+y6H2VudSjpAL9JGRYho1/ghnBsd37yPbZDNZs7xIjXLgURJ7t SWKLLcNl69WrvRaEf18Ip/CjGzpmDrrcgwQIXKQaH9ukQgWiWmg1U1w/QJPJEGJSLRHk mmfHfAQKh6eFowz7YOgxn2J43b085/cVraPpeNwaNfwcmO44qSUzjBhOwBwKy/pAvhJ7 kBtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784490013; x=1785094813; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=G937/UZ24uNo9RJH5F1RTklgc3d2mOnFL2BoYh6wUVA=; b=fszcX86Rvf50alfLBep89/6ZxVeMhN0WrD/Q5ToztU0jcTA55wJ39eYNUToIysvB8m EXlCYm+qUDyfH+JgYj5ISmjkUgMKwNncB0QgmVLN6DuGHXP8Hit2tlF46c1BqPubU4Kf HIu/gBzF/CxyBMcv3DcQIxcCtbmEuypcira7xczEw7hYgS93iay+U+7rjJZER0Uw4OTE PJTUurdJjggs2sIImahV1IF4U/5ZNt7F8G5mQwG9sYslI7R6I5QcTMQknm4C8+G8sgZ4 +A9a2fqxSiAhw/v9TZFj3dSenCeEC9DJIaFs/i6amVYQwR+m5jX+TCOf6vssHIt2Zpw8 VOHg== X-Gm-Message-State: AOJu0YxypjF2S4RUl7KPX2o7dDrP7vxFggd1FfyHAn462V2/ai+PH1cd eVPOXVs7el0lyvjSWy5MgXzC1ECjVcPFNde+Lb5nlnMUqgsq68fKrq1B0EWEJw== X-Gm-Gg: AfdE7cnuFiJd7ammMtkrq6zDC+3EMepYNIFORxdHTwMOF9qo1pjciZCIIPPKErkofc+ dW06ylXmHGfP8fMIOYHF3OwitdCIO0gLD4DJVRDeJWP6pMd+xTJDnjuAdhi6PZwwmGImb4KNCW+ Qz4TiLknnG9HhabVmeCYBKyTcico617wOet4PgZlu/WyKY9avrKri8CVdqy9q6dibpCZB94/uad m16RTb86ENdvdEAqt1z4N52W+3RmJzLaCleYfv7Lfqp67lJC8nE6xWM/d267fAkInZPU/gh2F7e RweJ5LE65VJ8gRrWN0WO66xLPx+kyQv5iSTX82DlkFzaaayaQ4EzgnzsemFwXU+NObJYQz7dolR utwmoluWr3ZcOKmyBfyrN2hUvHfXfet4RM/0x1uYCEIvy02PICXQ8eQHvc27zh1Q/hVzVQU2Qpb pdx4epOctGcwyJq5v8hjHC/+7jO+OgdAdmQPlP8LAggp31jmFgJPhi4B0Fzlq6epdts+Hh0lNHr nrMoneuvu4nsMwjkINGt/EAaJ6gvPulcPlsVStRCkDngr7LIshDoxsvI8ukYMgHZw== X-Received: by 2002:a17:90b:3942:b0:37f:9ce1:cda8 with SMTP id 98e67ed59e1d1-38e4b59469cmr11738666a91.30.1784490013570; Sun, 19 Jul 2026 12:40:13 -0700 (PDT) Received: from ryzen.lan ([2601:644:8000:7a86::e35]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38e3a0fb993sm6308126a91.15.2026.07.19.12.40.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Jul 2026 12:40:11 -0700 (PDT) From: Rosen Penev To: linux-edac@vger.kernel.org Cc: Frank Li , Borislav Petkov , Tony Luck , Nathan Chancellor , Nick Desaulniers , Bill Wendling , Justin Stitt , York Sun , imx@lists.linux.dev (open list:EDAC-FSL_DDR), linux-kernel@vger.kernel.org (open list), llvm@lists.linux.dev (open list:CLANG/LLVM BUILD SUPPORT:Keyword:\b(?i:clang|llvm)\b) Subject: [PATCH 0/2] EDAC: fsl_ddr: probe failure and remove lifetime fixes Date: Sun, 19 Jul 2026 12:40:07 -0700 Message-ID: <20260719194009.117532-1-rosenp@gmail.com> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series fixes two lifetime/error-path issues in the FSL DDR EDAC driver (drivers/edac/fsl_ddr_edac.c): * Patch 1: On probe failure, fsl_mc_err_probe() leaves the memory controller hardware configured to generate interrupts (DISABLE cleared, INT_EN set) while no handler is registered, which can trigger an unhandled interrupt storm on the shared IRQ line. Restore the MC error registers in both error paths. * Patch 2: The devm-requested IRQ passes mci as context, but fsl_mc_err_remove() frees mci via edac_mc_free() before devres tears down the IRQ, leaving a use-after-free window for the shared interrupt handler. Manage mci lifetime through devres so it is freed only after the IRQ is released. Both patches are build-tested for arm64 (defconfig + CONFIG_EDAC_FSL_DDR) with LLVM=1. Rosen Penev (2): EDAC: fsl_ddr: restore MC error registers on probe failure EDAC: fsl_ddr: manage mci lifetime via devres to fix remove UAF drivers/edac/fsl_ddr_edac.c | 42 +++++++++++++++++++++++-------------- 1 file changed, 26 insertions(+), 16 deletions(-) -- 2.55.0