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 9FD8A4848BD; Thu, 17 Sep 2026 16:51:11 +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=1789663873; cv=none; b=OXzSOTeTbDI5AlMDEdubPyZKYKbl9vMY1UGOXW981IXM8RW+y6fel6qTx8/dFoIAJIWegW+7+hrfXOCSY+VSJP/j2LtDV+50pStY9HTc7bb8zIBZjJbQFiw57Kfmw0Rh+pqgJ4gaWZZGWluS4Mp3U5rWJLhcp+TW36MYBhVASs4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789663873; c=relaxed/simple; bh=yb6vu4tqCBaw4ssfXddPlN1tvav1o78zEF62BQ5cUgY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=kwWd0SAWYHg/529A8KHjC5kSsqYEIwjIxzG0xKXmP0zC+mrIl4LliWq1HkcaR0UQir2PWtAPt/CA14irkSgs2tmjjxpiSlYgzet6juSlcrIIiHX2YMeK3iRbZoTPjRj0SpNeTPZdAXxRGtPEmavKYJjkNFrifuj6NjE2ick2/g8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=QxHH/IiY; 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="QxHH/IiY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 92BE61F00893; Thu, 17 Sep 2026 16:51:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789663871; bh=+ZciwdpbSEXJ0P9aSqQsRoihiLcnC79Fa9t0hjjFs6k=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=QxHH/IiYX49gVcWqrR3ZXnQ6fZxlIaw/NXulpwhHTxLPKMDNq19fSsgMGnCugLHsr HRj7DqhWTGpn38m1vYNKH9MWimlOaCEzbItsgC7Ne7q2M20rGo+d8P0osQtllxqBcP KkerVdIAVtFvEq7fnrHsjxIT08Y5yfAk/Ano4vxI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Christoph Hellwig , "Christian Brauner (Amutable)" , Sasha Levin Subject: [PATCH 6.18 0183/1250] isofs: handle set_blocksize failures Date: Thu, 17 Sep 2026 15:59:38 +0100 Message-ID: <20260917151557.071103637@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260917151551.901433442@linuxfoundation.org> References: <20260917151551.901433442@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christoph Hellwig [ Upstream commit 25ef4c4d9f0e96fb89c0ae0d7127c3f12a31bc32 ] isofs uses buffer_heads, which don't handle block size > PAGE_SIZE well. Without this, mounting we will hit the BUG_ON(offset >= folio_size(folio)); in folio_set_bh on the first __bread_gfp call. Signed-off-by: Christoph Hellwig Link: https://patch.msgid.link/20260511071701.2456211-8-hch@lst.de Signed-off-by: Christian Brauner (Amutable) Signed-off-by: Sasha Levin --- fs/isofs/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index ad3143d4066bf..3433fa14cd014 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -818,7 +818,8 @@ static int isofs_fill_super(struct super_block *s, struct fs_context *fc) * entries. By forcing the blocksize in this way, we ensure * that we will never be required to do this. */ - sb_set_blocksize(s, orig_zonesize); + if (!sb_set_blocksize(s, orig_zonesize)) + goto out_freesbi; sbi->s_nls_iocharset = NULL; -- 2.53.0