From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B907814BF92 for ; Mon, 19 Aug 2024 05:37:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724045865; cv=none; b=Zix2RZA7cU+p3gGobsUa1RCp7PQZ8CUwZtcyI+NOmSnzMR+NVfULjZh839oELIiOKVG/OPCouMZ2LaBnZdd5m1JgEiytGR62ONJCTCck+pdnwt1q3CAd7ADhToTQZgn8ABuHV1IOou5glqOEfr6dUeKO1UFSJrcsxYD1aYWdPI0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724045865; c=relaxed/simple; bh=e+nPnS4XyxuzpYoHA/PrKm6uWs9jfGZZHcWs0Nd5WSM=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=MzQ/T56iZ1kPvCR+anEV7STIDiCSQdii2jvWFiw0TxfTH0X/mfzeS5/2al42h++UcprWiPK9xIjQfic/+Pf8zdvbNY1YOetLSJyt13JQg2TPt1AP4JbosjyQGaGKffl0D/QeAwj/4Dxkz+X8SekEwpQBXCEU9mORR19fO6EeUPE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-81f901cd3b5so414837039f.1 for ; Sun, 18 Aug 2024 22:37:43 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724045863; x=1724650663; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=bZXQ/nH9wJXxO6Ctvm33UDJfvbLkfNyruTtFa/XEzPM=; b=H4prvQQhKEtjR1wOP+j2K90yUI+P0G/AvJGfAqsVRKglNcXcY9hRWuOely+kBUh1BT 1gZQuP7+ztAqFXc2G4g6hnr8VvRwIHoky5TgLlHzwj1eounq5xSqmh2PXBH6verppfFc JSF+dyuAg4sl1fn8n0bWoz5Ya+l2JRagxLGKIOimexhy4a1f691DpSGCOfJ9CehWTqUT JN1tqHmpH3mM7PRinmp7xJ6nb+qfLRaZj1mXzoF9lTQ+E0g2LZZurq4PytgJkpeU9o3I YJZrvam5o9Ik49cfsQ81uJmLEpLDxf5SY0gwsr5vjB8lAILlI6IOvqPyZ5J+MPn1g1og fpzw== X-Gm-Message-State: AOJu0YznFaca4BTW5+xIRK10fIGiJV5Ss1sVrZz//vQDcRwnzv7Kwewv 9pd1TsF8D8n26HIytcJZJR6pvxo/7lm+7PaI/RwHbstNrH9JtjInibuAiwHeUysuQ5bAPBaifdG wDVV0eHXlQDiIxwdvRwc/8Weeff2EFbIF2xN0+iC2+5WOYxpVZfq+xik= X-Google-Smtp-Source: AGHT+IE+3P694oZIrubRwT7V/eGaHTwR3QOie+JN/yIPocr+fp7vV4UykqR+eo3h0j0AJahxIMYVhduuoudgxOA5d+fIfdME3F96 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:8301:b0:4c2:8a0c:380d with SMTP id 8926c6da1cb9f-4cce1695f7amr629476173.3.1724045862843; Sun, 18 Aug 2024 22:37:42 -0700 (PDT) Date: Sun, 18 Aug 2024 22:37:42 -0700 In-Reply-To: <00000000000071b7c5061ff83639@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003b49e0062002b5d3@google.com> Subject: Re: [syzbot] Re: [syzbot] [bcachefs?] KASAN: slab-out-of-bounds Write in bch2_dev_journal_init From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Re: [syzbot] [bcachefs?] KASAN: slab-out-of-bounds Write in bch2_dev_journal_init Author: lizhi.xu@windriver.com two obj are null ? #syz test: upstream c3f2d783a459 diff --git a/fs/bcachefs/journal.c b/fs/bcachefs/journal.c index 13669dd0e375..d6970d834991 100644 --- a/fs/bcachefs/journal.c +++ b/fs/bcachefs/journal.c @@ -1307,8 +1307,18 @@ int bch2_dev_journal_init(struct bch_dev *ca, struct bch_sb *sb) if (journal_buckets_v2) { unsigned nr = bch2_sb_field_journal_v2_nr_entries(journal_buckets_v2); - for (unsigned i = 0; i < nr; i++) + for (unsigned i = 0; i < nr; i++) { ja->nr += le64_to_cpu(journal_buckets_v2->d[i].nr); + if (le64_to_cpu(journal_buckets_v2->d[i].nr) > UINT_MAX) { + struct bch_fs *c = ca->fs; + struct printbuf buf = PRINTBUF; + prt_printf(&buf, "v2d[%u]: %lu overflow!\n", i, + le64_to_cpu(journal_buckets_v2->d[i].nr)); + bch_info(c, "%s", buf.buf); + printbuf_exit(&buf); + return -BCH_ERR_ENOMEM_dev_journal_init; + } + } } else if (journal_buckets) { ja->nr = bch2_nr_journal_buckets(journal_buckets); }