From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 80F83C4361B for ; Mon, 7 Dec 2020 20:03:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 439C22368A for ; Mon, 7 Dec 2020 20:03:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726626AbgLGUDw (ORCPT ); Mon, 7 Dec 2020 15:03:52 -0500 Received: from mail-io1-f70.google.com ([209.85.166.70]:37247 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726241AbgLGUDw (ORCPT ); Mon, 7 Dec 2020 15:03:52 -0500 Received: by mail-io1-f70.google.com with SMTP id s12so12761342iot.4 for ; Mon, 07 Dec 2020 12:03:36 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=XMGMPIEBErujLDEv/XhG8es0A2X7wQdMlren4Z/PANs=; b=SXAqxQ5a2IhsEzcu7JzR1S0cw+g2l3UxiJ/a1oqAXGGfMA2tqpyUBNhPeDKkjQzg5m TS/sLzJaYiojGfqn1QWb++aIetV7uoXlrnu24Fb3k0QtoAqy7nnoUYjigmiaVoKKQf4N YlM6VDhbZBO8yU4euYzQQ691IEFTFxdJvOqu17EEs+0vYfXnxOsH/2DNurvFcXWY8Asf FJIyqMRtNR9c3snk8Vecc2vvlK/WUwrfN8E9aIOL/KRo1hyEbp12HnedBaBKLVGt36B5 x38m98MF5J5eF+eGGu1+Ow6WA/w4fsOXieKiwkTUXf48NukkL65htLGJhpfOc1Jv0BrA lWCw== X-Gm-Message-State: AOAM530wqbSWG7tdfIHc/H0Cf+khmASVzbwa+5ynG4LbVfQzfErCkzu3 tiy75g+QuMVBvPo728ZDqH1WBFDiX5e0ozhgzHOkLUiNOWg5 X-Google-Smtp-Source: ABdhPJzTcO6HdC1HPfBAdo9qmGVdcPBUW/k2i+We0dzvt/EZzDBbvbOZVtuuykvGXpgUi0FP8aosriwNV5mZyRTTk2+r7qY8ypQC MIME-Version: 1.0 X-Received: by 2002:a5e:a916:: with SMTP id c22mr9051978iod.144.1607371391149; Mon, 07 Dec 2020 12:03:11 -0800 (PST) Date: Mon, 07 Dec 2020 12:03:11 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000caabb705b5e550aa@google.com> Subject: KASAN: vmalloc-out-of-bounds Write in pcpu_freelist_populate From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, kafai@fb.com, kpsingh@chromium.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 34da8721 selftests/bpf: Test bpf_sk_storage_get in tcp ite.. git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=10c3b837500000 kernel config: https://syzkaller.appspot.com/x/.config?x=3cb098ab0334059f dashboard link: https://syzkaller.appspot.com/bug?extid=942085bfb8f7a276af1c compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+942085bfb8f7a276af1c@syzkaller.appspotmail.com ================================================================== BUG: KASAN: vmalloc-out-of-bounds in pcpu_freelist_push_node kernel/bpf/percpu_freelist.c:33 [inline] BUG: KASAN: vmalloc-out-of-bounds in pcpu_freelist_populate+0x1fe/0x260 kernel/bpf/percpu_freelist.c:114 Write of size 8 at addr ffffc90119e78020 by task syz-executor.4/27988 CPU: 1 PID: 27988 Comm: syz-executor.4 Not tainted 5.10.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 print_address_description.constprop.0.cold+0x5/0x4c8 mm/kasan/report.c:385 __kasan_report mm/kasan/report.c:545 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562 pcpu_freelist_push_node kernel/bpf/percpu_freelist.c:33 [inline] pcpu_freelist_populate+0x1fe/0x260 kernel/bpf/percpu_freelist.c:114 prealloc_init kernel/bpf/hashtab.c:323 [inline] htab_map_alloc+0x981/0x1230 kernel/bpf/hashtab.c:507 find_and_alloc_map kernel/bpf/syscall.c:123 [inline] map_create kernel/bpf/syscall.c:829 [inline] __do_sys_bpf+0xa81/0x5170 kernel/bpf/syscall.c:4374 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e0f9 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f679c7a7c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e0f9 RDX: 0000000000000040 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 000000000119c068 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034 R13: 00007fffd601c75f R14: 00007f679c7a89c0 R15: 000000000119c034 Memory state around the buggy address: ffffc90119e77f00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90119e77f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90119e78000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90119e78080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90119e78100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.