From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f68.google.com (mail-pj1-f68.google.com [209.85.216.68]) (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 87CEE2FFDEA for ; Thu, 4 Jun 2026 07:36:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.68 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780558580; cv=none; b=I/QGGh50waN/eoyuAuPzGZm0ia2JUDmVsBZao9bPXxObTWGBeb5gPDIQfw6BwjoEqNb+rkUfsRCGKUuovzsyHBN+fVEhAv7v9Rd/t4RP35lrhHHs69HlbcIuBDurtiN+KTeYTvtvbf3dhgq+wdeSzHuS9NSQCmskzP0RxaMj3yQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780558580; c=relaxed/simple; bh=E5vXWTNHkTRzDtH/veP8aO8YMLP8CY9Ty/5IFbJYIjU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=LojqiJT+yVYPbOVSvD8i+3X3al5rNScD8kVWiQv/rCFg7Y8+1R4Cuxv7Ypt4vUhjetL1/z9wjffeS+dCZ5ZBZIQudtEhwn7Nm5uKGtpSAxOk61s5lQjLIuel+B1rNrv5yV3KCwVsH6yO3MJt95ObY0hKkesk3sgA3yH8j2dEi6I= 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=P0AbR1XI; arc=none smtp.client-ip=209.85.216.68 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="P0AbR1XI" Received: by mail-pj1-f68.google.com with SMTP id 98e67ed59e1d1-36d9794d82aso242246a91.0 for ; Thu, 04 Jun 2026 00:36:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780558579; x=1781163379; 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; bh=PvMIfx1POTAyaZla+RUcmznikw/7VMfKwxZ5AANjs1o=; b=P0AbR1XIFfuP//F+r5y5W5P3F/9byVlWPkhSipcqdm6UmvIx0iAZP720QehTf8dTzM 6n+RPPvgUC7lmO3zbRfhCxdh5zmpZV2V1q04R/xVetaycAH4NfyVvJ6KromLX9CqlqEK 6AlxRloVRyBlIm2OPatVoKYEq9XWuyhhQZ+xzRnJZceWDNp0BSWvDtFTuPlbIvHUyo6s KYWdilWGLYEsg0cz5nMOe4yfXn1/Lp3QkHX7S/COtDMwAy4BGpXH4PkvccBYWpv0CWSZ HyyoDTRfc/P48lLRP7Wj0gavb5LUhm+b4mZO0inDj21PIrgkAzMDMByzG/4HrCR+fU3E taHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780558579; x=1781163379; 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; bh=PvMIfx1POTAyaZla+RUcmznikw/7VMfKwxZ5AANjs1o=; b=YjH20cbePlwxNL3WMnY9Qp6mq4/o1DiF6fLlNr3S6wtEjcGRtkSNTZRccdgprdk+s5 f6Y8P+zbnSHlP9tZNc+h/ax55U+1P9wOcqyvHDW6Go5nE07sdplDqVEFMt/RKNrzPbV0 EhrdL4AIXGmPC8QFsF8YAG4mgglf5ED/EvsGu/AxE8WIdPMISlVxgj8NEsJWu7d8+x0L rjLPru1ANU1UCZZuynijJnquy449UcS/wXNuYW4nuj1MIdyfBvfi6eBPRxEVrnTUuCJh Of6y79BS+P3q+ZgnGIvkmzXJ78dsztlMpHUw0Vhfsb7G+uJwXxt383cr09+wJwe2jSLq q/Qg== X-Forwarded-Encrypted: i=1; AFNElJ8U+tQZfWzvG+FVSsHgk6tFYiPYbiHqWg4kgyUT6mj0M3YRaNeUy61NYWNaw9mttaERxr7bp3TzVKZYooU=@vger.kernel.org X-Gm-Message-State: AOJu0YyYXeAO7i8x+8kiwBssueK5ds+PcxTWZvVaPLhPOzEqXj/H5/NE i/I2NLcirDjb1vkExYub1TLP/ntI6mThF4rbmLzVSU6+tYJWOZCTliZ5 X-Gm-Gg: Acq92OGUsqRVhREMPV35GpjvQ1SOzJMCj1ZWJc5GJZOY/mptJ5EosQFQywfQ0FMROb0 ikcKvScxLvmwWcpxYFQvOhbP+5fnLLVq2JR4ALktlBkCiM1fQ3VnQN6ztTN+VOXS/chp7bSn5KH GgPYkAg/VXolKGt5X5c6ADq7aVOS/uRqFZk2w1Fw7cy2fN+rQei18Mo6xMleZHGBL1P3VulWVM+ 7NzuxnUeBCc1882zTWfeB8XB7TCeA7JgI1SrTsD+XliSBrey4chm+aoG1X+w5fN2ey/TDov5gug zP/X32vSFgFnAK9uyBQjjpq8SKRSTEchDMQteYzAJCOgzUC0vMJtjOpKRRE65EutfjeKZk1Usib 0MNPxLC75oZuRPPcliPLkLRIR6lDmMGqhBM9ruwWd5ADISchMDcuOPmbXvfgmg29xNHOJp2UAla HMMIUNI9tp9QL3LPl20WqBr18tl77B+5jZK76n/c9zgbd9sbuVRrkcT2ZKAQ== X-Received: by 2002:a17:90b:4ac7:b0:369:2e00:1ff0 with SMTP id 98e67ed59e1d1-36e30553627mr6462714a91.6.1780558578780; Thu, 04 Jun 2026 00:36:18 -0700 (PDT) Received: from intel.company.local ([210.184.73.204]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-36f6dba8521sm2063074a91.15.2026.06.04.00.36.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Jun 2026 00:36:18 -0700 (PDT) From: Wandun Chen To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: robh@kernel.org, saravanak@kernel.org Subject: [PATCH 0/2] of: reserved_mem: fix stack overflow and make dynamic reserved region configurable Date: Thu, 4 Jun 2026 15:36:09 +0800 Message-ID: <20260604073611.3954433-1-chenwandun1@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Wandun Chen Patch 1 fixes a stack buffer overflow in fdt_scan_reserved_mem() when the DTS contains more than 64 reserved-memory regions. Patch 2 makes the limit configurable via Kconfig (OF_RESERVED_MEM_DYNAMIC_REGIONS) so platforms with many such regions can modify it without patching the source. Wandun Chen (2): of: reserved_mem: avoid stack buffer overflow in fdt_scan_reserved_mem() of: reserved_mem: add config to extend dynamic reserved memory regions drivers/of/Kconfig | 11 +++++++++++ drivers/of/of_private.h | 2 +- drivers/of/of_reserved_mem.c | 6 ++++++ 3 files changed, 18 insertions(+), 1 deletion(-) -- 2.43.0