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 DA70C3EDE63 for ; Wed, 9 Sep 2026 10:02:00 +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=1788948122; cv=none; b=Y9TgME7D079KsH0/+hFNohvGRtP1SL1QHmT0VjzE8X+nkMbzztQ+KNhLYqabOwG1MYcZsLzK6eUhaKmJfc7qKEH8kI3lhlVFjW9BUBTrAIAnmD7cnQRGOe8lTVbGRhl7gLfs8o67Df3hEecI7A/kSQm1ngAB4QncBvEEuYurJuI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788948122; c=relaxed/simple; bh=iJL2zqroMGavLV23Bt/oahVsRYGp42H9Lrciq2NnYgI=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=VmG0dgkX926f/trFsfX2GquYAEm/iNld2jy7O2+CGHtsitJlOG55vi576O1o9oYNPbw3OIutnwQShmgsQgbVHWpJuzvMQuyLR36CJWmV1qlb9/Bl3PjE50AahY8/uRWUHdWkxpAqoEnCz503NjDb7U8zRkgSeQFnCWzUvwyTlKk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=d72VHFFI; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="d72VHFFI" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 32D421F00A3A; Wed, 9 Sep 2026 10:02:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788948120; bh=esslhIHP+L+CvRhepQMmcgQ5Flt7CswU7Ag3UaAMVAk=; h=Subject:To:Cc:From:Date; b=d72VHFFIcEVoVBvQS3wEfcblw9Obp+Ylf6X+P2mmqA0fuxSunhmI9b2B4bH2DsZ/d xU0/urz5Oy6yvGmXA33KmDFfhj50J5r7TQ5H6aw2FO4LV1ZbmaL96XPYqyYFdxcrS6 h+TG43pOtrGhzEzcaqQ9aInvDoH1W1rh+p9xIdNw= Subject: FAILED: patch "[PATCH] clk: meson: align gxbb_32k_clk_sel number of parents with" failed to apply to 6.6-stable tree To: martin.blumenstingl@googlemail.com,christianshewitt@gmail.com,jbrunet@baylibre.com Cc: From: Date: Wed, 09 Sep 2026 11:58:28 +0200 Message-ID: <2026090928-playmate-skating-2109@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 628b6fee9fca292f12d07f0f1bcf1edefa949d81 # git commit -s git send-email --to '' --in-reply-to '2026090928-playmate-skating-2109@gregkh' --subject-prefix 'PATCH 6.6.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 628b6fee9fca292f12d07f0f1bcf1edefa949d81 Mon Sep 17 00:00:00 2001 From: Martin Blumenstingl Date: Tue, 23 Jun 2026 22:19:56 +0200 Subject: [PATCH] clk: meson: align gxbb_32k_clk_sel number of parents with actual count The following out-of-bounds read has been observed by Christian on a GXBB WeTek Hub: ================================================================== BUG: KASAN: global-out-of-bounds in __clk_register+0x1b70/0x2418 Read of size 8 at addr ffffd66320cf88e0 by task swapper/0/1 CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.0.0-rc5 #1 PREEMPT Hardware name: WeTek Hub (DT) Call trace: show_stack+0x14/0x20 (C) dump_stack_lvl+0x74/0x94 print_report+0x164/0x4b0 kasan_report+0x98/0xd8 __asan_report_load8_noabort+0x1c/0x24 __clk_register+0x1b70/0x2418 devm_clk_hw_register+0x74/0x15c meson_clkc_init+0xd4/0x20c meson_clkc_syscon_probe+0x5c/0x94 platform_probe+0xbc/0x17c really_probe+0x184/0x844 __driver_probe_device+0x154/0x35c driver_probe_device+0x60/0x188 __driver_attach+0x168/0x4a0 bus_for_each_dev+0xec/0x180 driver_attach+0x38/0x58 bus_add_driver+0x238/0x4c0 driver_register+0x150/0x388 __platform_driver_register+0x54/0x7c gxbb_clkc_driver_init+0x18/0x20 do_one_initcall+0xb8/0x340 kernel_init_freeable+0x49c/0x52c kernel_init+0x24/0x148 ret_from_fork+0x10/0x20 The buggy address belongs to the variable: gxbb_32k_clk_parents+0x60/0x400 The buggy address belongs to a vmalloc virtual mapping The buggy address belongs to the physical page: Memory state around the buggy address: ffffd66320cf8780: 00 00 00 00 f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 ffffd66320cf8800: 00 04 f9 f9 f9 f9 f9 f9 00 04 f9 f9 f9 f9 f9 f9 >ffffd66320cf8880: 00 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 ^ ffffd66320cf8900: 00 01 f9 f9 f9 f9 f9 f9 00 06 f9 f9 f9 f9 f9 f9 ffffd66320cf8980: 00 00 02 f9 f9 f9 f9 f9 00 00 02 f9 f9 f9 f9 f9 ================================================================== Commit 7915d7d5407c ("clk: amlogic: gxbb: drop non existing 32k clock parent") dropped a non-existing clock parent from the gxbb_32k_clk_sel mux but didn't adjust the hard-coded num_parents field. Fix the actual number of parents of that mux by using ARRAY_SIZE instead (avoiding similar problems in future). Fixes: 7915d7d5407c ("clk: amlogic: gxbb: drop non existing 32k clock parent") Reported-by: Christian Hewitt Cc: stable@vger.kernel.org Tested-by: Christian Hewitt Signed-off-by: Martin Blumenstingl Link: https://patch.msgid.link/20260623201956.1324992-1-martin.blumenstingl@googlemail.com Signed-off-by: Jerome Brunet diff --git a/drivers/clk/meson/gxbb.c b/drivers/clk/meson/gxbb.c index f9131d014ef4..d432e08d1777 100644 --- a/drivers/clk/meson/gxbb.c +++ b/drivers/clk/meson/gxbb.c @@ -1394,7 +1394,7 @@ static struct clk_regmap gxbb_32k_clk_sel = { .name = "32k_clk_sel", .ops = &clk_regmap_mux_ops, .parent_data = gxbb_32k_clk_parents, - .num_parents = 4, + .num_parents = ARRAY_SIZE(gxbb_32k_clk_parents), .flags = CLK_SET_RATE_PARENT, }, };