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 A2485C433B4 for ; Mon, 5 Apr 2021 22:05:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 68CE1613CD for ; Mon, 5 Apr 2021 22:05:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242655AbhDEWF3 (ORCPT ); Mon, 5 Apr 2021 18:05:29 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:45482 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241252AbhDEWFX (ORCPT ); Mon, 5 Apr 2021 18:05:23 -0400 Received: by mail-il1-f197.google.com with SMTP id x7so10366113ilp.12 for ; Mon, 05 Apr 2021 15:05:16 -0700 (PDT) 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=rE9Lgt+L6rHEa2lPaIz2LAbklGrZ/8/l6OV+XVfhjIQ=; b=K9pwb96B0+lO7vmtuVcdyPHyxtqdKwfXB/mS+m6FyiQpxDs/OFYKgr6DQfttn3sVrh zL3TGpqMFU7vvROvZh463q6ki4Orc//hcXxCtbFJIk60d/2IyavJ0lmnRhIlQVeKcdiK gSfCGEjrUhb2cbQSjDo1ysZHW9/W2bTUf6VVd4m3jQ+Awi8T5zjZV6zOJvNVGlg0Cmvk BJFTYzKOCxYV1p3Z0oUKO8QBFv16iTkfnl2i+LRjVtIp3buXIkPtYG3xqmL7qHoTQWUc 9kXI2ntFVVWxqVA6GERMflTUy6tTmHbklHn3rVUpjW7eSgeps7xkawUHDtK1IHaUuB3t KxOg== X-Gm-Message-State: AOAM530Q9nSBoozaPndBVhNdJPq5j3HMd0Nf0GXxZano4LyxyllSSSUO Zxm+FgyIRzyN9axnsG/3DKvn4akkMK3OazUS7XqfsoT6x1ir X-Google-Smtp-Source: ABdhPJwsl00yvfIuD6YEyJZUif+FP4TrNvNVIATDR9q3M8i0uQFmnaAG/Sm5oszwt4k13naHE6JC49fHrNIzBfixsVl0+UduvZNv MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a87:: with SMTP id k7mr19967967ilv.69.1617660316511; Mon, 05 Apr 2021 15:05:16 -0700 (PDT) Date: Mon, 05 Apr 2021 15:05:16 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008872ff05bf40e4db@google.com> Subject: [syzbot] WARNING: suspicious RCU usage in tcp_bpf_update_proto From: syzbot To: akpm@linux-foundation.org, andrii@kernel.org, anton@tuxera.com, ast@kernel.org, bp@alien8.de, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hpa@zytor.com, jakub@cloudflare.com, jmattson@google.com, john.fastabend@gmail.com, joro@8bytes.org, kafai@fb.com, kpsingh@kernel.org, kuba@kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, lmb@cloudflare.com, mingo@redhat.com, netdev@vger.kernel.org, pbonzini@redhat.com, rkovhaev@gmail.com, seanjc@google.com, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, torvalds@linux-foundation.org, vkuznets@redhat.com, wanpengli@tencent.com, x86@kernel.org, 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: 514e1150 net: x25: Queue received packets in the drivers i.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=112a8831d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7eff0f22b8563a5f dashboard link: https://syzkaller.appspot.com/bug?extid=320a3bc8d80f478c37e4 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1532d711d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15f44c5ed00000 The issue was bisected to: commit 4dfe6bd94959222e18d512bdf15f6bf9edb9c27c Author: Rustam Kovhaev Date: Wed Feb 24 20:00:30 2021 +0000 ntfs: check for valid standard information attribute bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16207a81d00000 final oops: https://syzkaller.appspot.com/x/report.txt?x=15207a81d00000 console output: https://syzkaller.appspot.com/x/log.txt?x=11207a81d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+320a3bc8d80f478c37e4@syzkaller.appspotmail.com Fixes: 4dfe6bd94959 ("ntfs: check for valid standard information attribute") ============================= WARNING: suspicious RCU usage 5.12.0-rc4-syzkaller #0 Not tainted ----------------------------- include/linux/skmsg.h:286 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor383/8454: #0: ffff888013a99b48 (clock-AF_INET){++..}-{2:2}, at: sk_psock_drop+0x2c/0x460 net/core/skmsg.c:788 stack backtrace: CPU: 1 PID: 8454 Comm: syz-executor383 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 sk_psock include/linux/skmsg.h:286 [inline] tcp_bpf_update_proto+0x530/0x5f0 net/ipv4/tcp_bpf.c:504 sk_psock_restore_proto include/linux/skmsg.h:408 [inline] sk_psock_drop+0xdf/0x460 net/core/skmsg.c:789 sk_psock_put include/linux/skmsg.h:446 [inline] tcp_bpf_recvmsg+0x42d/0x480 net/ipv4/tcp_bpf.c:208 inet_recvmsg+0x11b/0x5d0 net/ipv4/af_inet.c:852 sock_recvmsg_nosec net/socket.c:888 [inline] sock_recvmsg net/socket.c:906 [inline] sock_recvmsg net/socket.c:902 [inline] ____sys_recvmsg+0x2c4/0x600 net/socket.c:2569 ___sys_recvmsg+0x127/0x200 net/socket.c:2611 do_recvmmsg+0x24d/0x6d0 net/socket.c:2705 __sys_recvmmsg net/socket.c:2784 [inline] __do_sys_recvmmsg net/socket.c:2807 [inline] __se_sys_recvmmsg net/socket.c:2800 [inline] __x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2800 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4468e9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f010b0cc318 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00000000004cb4e8 RCX: 00000000004468e9 RDX: 0000000000000422 RSI: 0000000020000540 RDI: 0000000000000004 RBP: 00000000004cb4e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049b270 R13: 00007ffe3829a5bf R14: 00007f010b0cc400 R15: 0000000000022000 --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches