From nobody Mon Sep 28 21:54:43 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (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 23E2B306744; Mon, 17 Aug 2026 03:29:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786937377; cv=none; b=bt9ui02eYMzaK3s1OsKqVszWz8OdIm1j5dGXfYRyr61j30PsN8YuN5kSEAnz6ReUWnfRUm/YI6ASIgbGNkMtbzvNznv7sPoX3tU5Cb0VtpC5dwkBv2mfDpi0YpXyB3ELVlE/+7+YUaW83AOZKIsf5z92h2VMfaxzWpb3zhfPwUk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786937377; c=relaxed/simple; bh=ykgBHbnFw38xzHSbln7LhsvmIVRtGN3381BIqfJvcSA=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=mTiIATb9N6WkVrWPmpxBX4BdsCWRuRjokpN1Z6ktGNhc5tDZU6dnz1/QvS1WJMfqib6Q1fRvuHave5DrpJxMQY4mqu3Oc/8AhYwK3pEcPnh7LeVmprkoFSM46sr9PysssNNHagalsQS1FPy2iq3pL7AZ/p68SZ+xNMDcHRb7djo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: da3917b699eb11f19a56ed5b684f684d-20260817 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.19,REQID:7940290c-aeef-4d0e-a285-14358fcd1700,IP:0,U RL:0,TC:0,Content:0,EDM:25,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:25 X-CID-META: VersionHash:7db8b62,CLOUDID:8899bfdbf8af6816e71699ceccef134f,BulkI D:nil,BulkQuantity:0,SF:102|850|865|898,TC:nil,Content:0|15|50,EDM:5,IP:ni l,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES :1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: da3917b699eb11f19a56ed5b684f684d-20260817 X-User: xiaopei01@kylinos.cn Received: from localhost.localdomain [(10.44.16.150)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 1790030932; Mon, 17 Aug 2026 11:29:28 +0800 From: Pei Xiao To: James.Bottomley@HansenPartnership.com, deller@gmx.de, linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Pei Xiao Subject: [PATCH] parisc: eisa: Fix infinite loop when parsing invalid IRQ value Date: Mon, 17 Aug 2026 11:29:25 +0800 Message-Id: <53b759a86aafd200d7477675a77a0fae9dbf188f.1786937310.git.xiaopei01@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When an invalid value is passed via the "eisa_irq_edge=3D" kernel command line parameter (e.g. "eisa_irq_edge=3D16,5"), eisa_irq_setup() prints an error message and continues without advancing the current position. As a result the same invalid value is parsed again and again, causing an infinite loop while the kernel boots. Advance to the next comma-separated entry, or stop parsing when there is no next entry, before continuing so that the remaining entries are processed normally. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Pei Xiao --- drivers/parisc/eisa.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c index 9eab974e6baf..b5b5413bfd1e 100644 --- a/drivers/parisc/eisa.c +++ b/drivers/parisc/eisa.c @@ -442,6 +442,11 @@ static int __init eisa_irq_setup(char *str) val =3D (int) simple_strtoul(cur, &pe, 0); if (val > 15 || val < 0) { printk(KERN_ERR "eisa: EISA irq value are 0-15\n"); + cur =3D strchr(cur, ','); + if (cur) + cur++; + else + break; continue; } if (val =3D=3D 2) { --=20 2.25.1