From nobody Mon Sep 28 15:35:24 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 5000844062D; Thu, 20 Aug 2026 07:02:21 +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=1787209345; cv=none; b=BbzM3epq2qnKQV4TcdQKzbn29wNp8hdVikYxk8Nu0aqgkpEpkU78kNfMb+Twrr/eKosPN8dvVgZqnFhv4JyH0kVSgWVm4v6uzJ5BE/XRg+1AU2Bjx5OOZUnbT+QQHD30TwOLsv71e8OU2iXCPcndlWxi8VhcIBTyYilMxa3tSL0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787209345; c=relaxed/simple; bh=hCMQnA3XOeaQwootN1wJNpDaLzeN6tSQfXTGWgIGwys=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=R6FUgCbLO+1Sv7KmitFinpIatnd9FDE8Nsd1BvD9g0OgIDHtU1T6AhSOG2iVKPA0FCalltHNS6J2EYfk9sOAPfcoc2liIWXTicDFnNyJGkyNhjJqqTNH+G2NaiA6CcFUG5MiK93zyoOCo8fzASLpD/YBFRxk54Gz517tPDyXb7o= 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: 11ff703e9c6511f19a56ed5b684f684d-20260820 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.19,REQID:461ddc47-c43d-4c46-8b1a-96d32f274e11,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:7db8b62,CLOUDID:b3d4658713fc86a06391b527e9200706,BulkI D:nil,BulkQuantity:0,SF:102|850|865|898,TC:nil,Content:0|15|50,EDM:-3,IP:n il,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LE S: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: 11ff703e9c6511f19a56ed5b684f684d-20260820 X-User: gonglinkai@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 1915275116; Thu, 20 Aug 2026 15:02:13 +0800 From: Linkai Gong To: Remi Buisson , Jonathan Cameron Cc: David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, gonglinkai@kylinos.cn Subject: [PATCH] iio: imu: inv_icm45600: clamp FIFO packet count to buffer size Date: Thu, 20 Aug 2026 15:02:08 +0800 Message-Id: <20260820070208.3891851-1-gonglinkai@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" The IRQ path calls inv_icm45600_buffer_fifo_read(st, 0), so the raw 16-bit FIFO count sizes the read into st->fifo.data (8K). Cap the packet count so the transfer cannot exceed that buffer. Fixes: 06674a72cf7a ("iio: imu: inv_icm45600: add buffer support in iio dev= ices") Cc: stable@vger.kernel.org Signed-off-by: Linkai Gong --- drivers/iio/imu/inv_icm45600/inv_icm45600_buffer.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iio/imu/inv_icm45600/inv_icm45600_buffer.c b/drivers/i= io/imu/inv_icm45600/inv_icm45600_buffer.c index 2b9ea317385c..62e9e138bc89 100644 --- a/drivers/iio/imu/inv_icm45600/inv_icm45600_buffer.c +++ b/drivers/iio/imu/inv_icm45600/inv_icm45600_buffer.c @@ -419,8 +419,10 @@ int inv_icm45600_buffer_fifo_read(struct inv_icm45600_= state *st, fifo_nb =3D le16_to_cpup(raw_fifo_count); if (fifo_nb =3D=3D 0) return 0; - if (max > 0 && fifo_nb > max) - fifo_nb =3D max; + if (max > 0) + fifo_nb =3D min(fifo_nb, (size_t)max); + fifo_nb =3D min_t(size_t, fifo_nb, + INV_ICM45600_FIFO_SIZE_MAX / packet_size); =20 /* Try to read all FIFO data in internal buffer. */ st->fifo.count =3D fifo_nb * packet_size; --=20 2.25.1