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 3A008420469 for ; Mon, 21 Sep 2026 20:21:28 +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=1790022090; cv=none; b=kkVClmhAESZTMx7VKnylu8jmeCWzdbkBQIxUQsfd2aG5pSDa9zxb185p8IjP9u9R1YhbLmm8JwvKdLSdrWmqeNJ4jZizBxd5247NvWUFsv+gSC3tsb4Gz3VBNnfPpON0odL8MNOfLpc6eEI5jfk8zU5nv3dJSawY+3SoVpGTKQw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790022090; c=relaxed/simple; bh=6nMLbNhaQEgDo98muzZTjTviXY1YIjfT2om5I9WVDAY=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=MvVqpDcw9+NxG2cWtV+2btucfvwMhl9JchzRW5qgOykRWoDNYspnZmOA7iGzMOufUdOSOMkwkVAZ3E5F6diHnATa4OOvV/o5ffIOopOrMd0LzQu5XPGvTnaPdN2TZn1wZ/yQ0LohGlNh4SF6jVrofGlEWYz7u4Xh5apzwJZ/aIw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SCAgr0kC; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SCAgr0kC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5664C1F000FF for ; Mon, 21 Sep 2026 20:21:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790022088; bh=FwAc80JT6guNDC7bETP+6RF8VzGTXT8JTae4EScH23A=; h=From:To:Subject:Date; b=SCAgr0kCb01ASCajJ/eQ5GHQ0+is9ndqzTfWoMn/wfYjJDBK28/LHaIvrnVW/1sA7 lZnVa4oWkyTvq0bTampDm6c6BSyAjf7COcz70ZW8ORYbshwqtKDSug9/AOlwexRs7u DDlku1CKXJVuR4tVh2rxxNkNeC2MiKM2zL8ASMpUkv/sQwVxD4ulU3rgSMX4IX66BY b+pzkV3P0V1xMR93SEni+L9MbGPC7L3+Cxd+D9xCySmq4pl3fD9Z71Qmed9gXujBtY 0E08cNzQO5KaWnSTdYB77aV02+YTSGy0HFv6cOxPa2GjEOr5Knl92LKr+ABiJzSxn3 52fFw6bq95uTw== From: Helge Deller To: linux-parisc@vger.kernel.org Subject: [PATCH v2] parisc: Increase kernel stack size to 32kb Date: Mon, 21 Sep 2026 22:21:10 +0200 Message-ID: <20260921202122.3102-1-deller@kernel.org> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-parisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Helge Deller For 64-bit Linux kernels, increase the default kernel stack size (THREAD_SIZE_ORDER) to 32 kB, in order to avoid kernel crashes which have been triggered recently when building the debian vtk9 package with gcc 17: stackcheck: kworker/u128:0 will most likely overflow kernel stack (sp:179a83af0, stk bottom-top:179a80000-179a84000) Kernel panic - not syncing: low stack detected by irq handler - check messages CPU: 2 UID: 0 PID: 30760 Comm: kworker/u128:0 Tainted: G W 6.18.46-dirty #1 NONE Tainted: [W]=WARN Hardware name: 9000/800/rp3440 Workqueue: writeback wb_workfn (flush-259:0) Backtrace: [<000000004022f050>] show_stack+0x70/0x90 [<000000004022378c>] dump_stack_lvl+0x124/0x190 [<000000004022382c>] dump_stack+0x34/0x48 [<000000004020212c>] vpanic+0x204/0x648 [<00000000402025c4>] panic+0x54/0x58 [<0000000040232230>] do_cpu_irq_mask+0x3f8/0x440 [<0000000040227070>] intr_return+0x0/0xc Signed-off-by: Helge Deller Reported-by: John David Anglin Cc: stable@vger.kernel.org # v6.18+ --- arch/parisc/include/asm/thread_info.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/parisc/include/asm/thread_info.h b/arch/parisc/include/asm/thread_info.h index b283738bb6da..249370706242 100644 --- a/arch/parisc/include/asm/thread_info.h +++ b/arch/parisc/include/asm/thread_info.h @@ -24,7 +24,7 @@ struct thread_info { /* thread information allocation */ -#ifdef CONFIG_IRQSTACKS +#if defined(CONFIG_IRQSTACKS) && !defined(CONFIG_64BIT) #define THREAD_SIZE_ORDER 2 /* PA-RISC requires at least 16k stack */ #else #define THREAD_SIZE_ORDER 3 /* PA-RISC requires at least 32k stack */ -- 2.54.0