From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 CF8E5372EF0; Sat, 18 Apr 2026 07:59:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776499145; cv=none; b=WN6f7OqylHgsaPmmNGxQLh05ZXUEOC915XLTCP4e6b1ygvnjbGLuCluydhyTBaap7r6Ud3KaciFvALDV5JQisiPSFZb9M3jzsWh5x39lDqzpp1wgTOgovexoVjafkRHjsngHEiDa86gFxCnU328HKknSdNQB2A/HAj1kHtDS6fE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776499145; c=relaxed/simple; bh=5Ulg4ZRJR7KeEkFCnKYLGQqMRIE9tybhqc0WFbsZFlM=; h=Date:To:From:Subject:Message-Id; b=ejdHa4iBlfaPOezZEe+8RqNrXvpL3guGisCnQvEFiwclpwc8uP6TCnYeUei+wmfnwclcFOHjQHHLKJOVLCBrRWt0a1GJ0GToPeS3JX66Gnxb+abeJL9Yg9Vzm0torAccwKx4bzntSupfLlqe1dVX+CnXSPP4KkVr4Esi/aznH+g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=yDYdvI5S; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="yDYdvI5S" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C26F7C19424; Sat, 18 Apr 2026 07:59:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1776499145; bh=5Ulg4ZRJR7KeEkFCnKYLGQqMRIE9tybhqc0WFbsZFlM=; h=Date:To:From:Subject:From; b=yDYdvI5StVG+CMaJE/flVtJ3ga6uALftBF+3825aCVqVa31JzgOC54V5GGtea7GZ0 vLEIDU4Vu3Xh52cMOccOLF9LqLD15YEVoiQgjJLz6+R58fVSb+TO7OAZNA/deF+FT0 qKtHDUoW7s838+LSZQRmn/Dc5rYCCqnBwMrY91vw= Date: Sat, 18 Apr 2026 00:59:00 -0700 To: mm-commits@vger.kernel.org,stable@vger.kernel.org,osalvador@suse.de,muchun.song@linux.dev,fvdl@google.com,david@kernel.org,thorsten.blum@linux.dev,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-hugetlb-fix-early-boot-crash-on-parameters-without-=-separator.patch removed from -mm tree Message-Id: <20260418075904.C26F7C19424@smtp.kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/hugetlb: fix early boot crash on parameters without '=' separator has been removed from the -mm tree. Its filename was mm-hugetlb-fix-early-boot-crash-on-parameters-without-=-separator.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Thorsten Blum Subject: mm/hugetlb: fix early boot crash on parameters without '=' separator Date: Thu, 9 Apr 2026 12:54:40 +0200 If hugepages, hugepagesz, or default_hugepagesz are specified on the kernel command line without the '=' separator, early parameter parsing passes NULL to hugetlb_add_param(), which dereferences it in strlen() and can crash the system during early boot. Reject NULL values in hugetlb_add_param() and return -EINVAL instead. Link: https://lore.kernel.org/20260409105437.108686-4-thorsten.blum@linux.dev Fixes: 5b47c02967ab ("mm/hugetlb: convert cmdline parameters from setup to early") Signed-off-by: Thorsten Blum Reviewed-by: Muchun Song Cc: David Hildenbrand Cc: Frank van der Linden Cc: Oscar Salvador Cc: Signed-off-by: Andrew Morton --- mm/hugetlb.c | 3 +++ 1 file changed, 3 insertions(+) --- a/mm/hugetlb.c~mm-hugetlb-fix-early-boot-crash-on-parameters-without-=-separator +++ a/mm/hugetlb.c @@ -4226,6 +4226,9 @@ static __init int hugetlb_add_param(char size_t len; char *p; + if (!s) + return -EINVAL; + if (hugetlb_param_index >= HUGE_MAX_CMDLINE_ARGS) return -EINVAL; _ Patches currently in -mm which might be from thorsten.blum@linux.dev are