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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18310C07E9D for ; Tue, 27 Sep 2022 08:49:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231588AbiI0Itq (ORCPT ); Tue, 27 Sep 2022 04:49:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230508AbiI0Itl (ORCPT ); Tue, 27 Sep 2022 04:49:41 -0400 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13F751F2DF for ; Tue, 27 Sep 2022 01:49:39 -0700 (PDT) Received: by mail-il1-f197.google.com with SMTP id q3-20020a056e0220e300b002f5e648e02eso7037124ilv.3 for ; Tue, 27 Sep 2022 01:49:39 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date; bh=VcrBPx8xfJ9lVz+FClYVuo7si9Glw5I9QGikXlKH2Ug=; b=Tjc30jHfACLubEMDoUrQgBZj04ROPh4Nb3fGwvlhJ5zm8SaJe450gvAok3hDxMLNLD sFPz15Ag/qhG76+EtcmiEzCuWe0I+gf5gnZIed0VCzjYhHcok8Ww2MhFPJgHRHdrHkSo AqMjQHbdIVQ52ukLgSjYvtAjhEqhnsvj1155zQ/Ch8kWCa8vOpMqES0AZJIwgWgHlqH0 tbPd4pFuwA6j/QbT1HxwTMoawqsCv4DatjffJVuhV4CT9Kj6hDbSXBesXiGGw3elZt0z rasTDjzX8b6z6eeG7EUWt/zl7HFXnLpDk+14RdFz2K6iwIpa83QVP6cZQ3o5BhudDSQ1 nsNg== X-Gm-Message-State: ACrzQf1TwqpwyY32ZdaKcftjcuJTVEhBgamfCslNcG8uI+3yVkRIfIMw 6BMUCTBm6mADDCVeC9vdNdR8cwNO88zUqGCodV53VkZAbZ6D X-Google-Smtp-Source: AMsMyM70AyRb0r7TXdF58Jm1rV5VBRv2D9KicVc0GeCv407F6+C7NHIjnxuPK8o4LraWCWiSU02rF4XmeVZN2JIw3U1gEMly8IGz MIME-Version: 1.0 X-Received: by 2002:a05:6e02:b45:b0:2f8:ab79:fc70 with SMTP id f5-20020a056e020b4500b002f8ab79fc70mr2146818ilu.214.1664268578426; Tue, 27 Sep 2022 01:49:38 -0700 (PDT) Date: Tue, 27 Sep 2022 01:49:38 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006d989105e9a4b916@google.com> Subject: [syzbot] general protection fault in kernel_accept (5) From: syzbot To: bpf@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.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: bf682942cd26 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=117fc3ac880000 kernel config: https://syzkaller.appspot.com/x/.config?x=7db7ad17eb14cb7 dashboard link: https://syzkaller.appspot.com/bug?extid=c5ce866a8d30f4be0651 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 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+c5ce866a8d30f4be0651@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 3 PID: 12841 Comm: kworker/u16:2 Not tainted 6.0.0-rc6-syzkaller-00210-gbf682942cd26 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Workqueue: tipc_rcv tipc_topsrv_accept RIP: 0010:kernel_accept+0x22d/0x350 net/socket.c:3487 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e3 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 20 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 00 00 00 48 8b 7b 08 e8 a0 36 1c fa e8 8b ff RSP: 0018:ffffc9000494fc28 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff874c37b2 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000449 R12: 0000000000000000 R13: ffff888027a7b980 R14: ffff888028bc08e0 R15: 1ffff92000929f90 FS: 0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa6e1a8c920 CR3: 000000004bba0000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_topsrv_accept+0x197/0x280 net/tipc/topsrv.c:460 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kernel_accept+0x22d/0x350 net/socket.c:3487 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e3 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 20 48 8d 7b 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ee 00 00 00 48 8b 7b 08 e8 a0 36 1c fa e8 8b ff RSP: 0018:ffffc9000494fc28 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff874c37b2 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000449 R12: 0000000000000000 R13: ffff888027a7b980 R14: ffff888028bc08e0 R15: 1ffff92000929f90 FS: 0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c0154d8000 CR3: 000000006fb4b000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 fa mov %rdi,%rdx 3: 48 c1 ea 03 shr $0x3,%rdx 7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) b: 0f 85 e3 00 00 00 jne 0xf4 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 48 8b 5b 20 mov 0x20(%rbx),%rbx 1f: 48 8d 7b 08 lea 0x8(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 ee 00 00 00 jne 0x122 34: 48 8b 7b 08 mov 0x8(%rbx),%rdi 38: e8 a0 36 1c fa callq 0xfa1c36dd 3d: e8 .byte 0xe8 3e: 8b ff mov %edi,%edi --- 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.