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 983B2C4332F for ; Tue, 4 Oct 2022 12:30:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229530AbiJDM37 convert rfc822-to-8bit (ORCPT ); Tue, 4 Oct 2022 08:29:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229577AbiJDM36 (ORCPT ); Tue, 4 Oct 2022 08:29:58 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B13EE1007F for ; Tue, 4 Oct 2022 05:29:54 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id n14-20020a056e02100e00b002f9e283e850so3972178ilj.9 for ; Tue, 04 Oct 2022 05:29:54 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:cc:to:from:subject:message-id:in-reply-to :date:mime-version:x-gm-message-state:from:to:cc:subject:date; bh=GuN2yfSCRfAbOuYublK0z0wVOLyWKch1JZkf2YsVEkA=; b=ywqSHCvtDo9SK2nyBE9MjcKrUaBCjIpnmMbvtljqHNRigfXJE5wEKaI69NMkKMxjLK a7sksJdv8ZGo1MGY//cd5vBhJ8sFbBTrxVyP+RgTUYSjRQm27hYmL7Qe+xaAFnLZAPFK mzSd1oKqsTMYUvGkE7cSRalsZ+ThYpS1hN5DPqNtgFj2z3v3UrIV7oJXDJ9a232HTQQ6 A526i/OgY7+O/41F+/L5M0Pjfbv/bSWFIMxSXzuv80YE7cKdvF/o8HYBODvsCC2PU6Fg 3ftHLJhLPdQze6upsaRvtdBh6RiK71gb3n6bfJs8q4gRHhEoF74FGMrT9p7wfh2gnUtV LehQ== X-Gm-Message-State: ACrzQf1/APymkl6/UJikevJZ2z37FCZ4rkcQQCCxlSR3qZHQ6VvzO6hP s9VDrTzquxREZceJu3nvibcRZvHMp7OURtt4kvFhi73N4ER+ X-Google-Smtp-Source: AMsMyM63U9GG967OYkR0QzYQxCkW662G3uLOXg40S9IOF4dKuz6rRelptx7H+WEZDZEwzbjpr3LeDJBxkXE4xUdjGAeqq3sHrUwE MIME-Version: 1.0 X-Received: by 2002:a02:6628:0:b0:35a:a076:f194 with SMTP id k40-20020a026628000000b0035aa076f194mr12300988jac.293.1664886593575; Tue, 04 Oct 2022 05:29:53 -0700 (PDT) Date: Tue, 04 Oct 2022 05:29:53 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000000606f05ea349ef5@google.com> Subject: Re: [External] : Re: [syzbot] upstream boot error: WARNING in netlink_ack From: syzbot To: Harshit Mogalapalli Cc: bpf@vger.kernel.org, davem@davemloft.net, dvyukov@google.com, edumazet@google.com, fw@strlen.de, harshit.m.mogalapalli@oracle.com, keescook@chromium.org, kuba@kernel.org, linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, vegard.nossum@oracle.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org > #syz test: git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 725737e7c21d2d25a4312c2aaa82a52bd03e3126 "git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git" does not look like a valid git repo address. > ________________________________ > From: Dmitry Vyukov > Sent: Tuesday, October 4, 2022 2:03 PM > To: syzbot > Cc: bpf@vger.kernel.org ; davem@davemloft.net ; edumazet@google.com ; fw@strlen.de ; Harshit Mogalapalli ; kuba@kernel.org ; linux-kernel@vger.kernel.org ; netdev@vger.kernel.org ; pabeni@redhat.com ; syzkaller-bugs@googlegroups.com ; Kees Cook ; linux-hardening@vger.kernel.org > Subject: [External] : Re: [syzbot] upstream boot error: WARNING in netlink_ack > > On Tue, 4 Oct 2022 at 10:27, syzbot > wrote: >> >> Hello, >> >> syzbot found the following issue on: >> >> HEAD commit: 725737e7c21d Merge tag 'statx-dioalign-for-linus' of git:/.. >> git tree: upstream >> console output: https://urldefense.com/v3/__https://syzkaller.appspot.com/x/log.txt?x=10257034880000__;!!ACWV5N9M2RV99hQ!JLKmju0bGutCqqoyNIQKRQdm9TNClcOMG_8UkomHPsMDz-TMEdXilnMB9IHkb8-T4xl5_2lCJlynosRL1eQwvDK4FA$ >> kernel config: https://urldefense.com/v3/__https://syzkaller.appspot.com/x/.config?x=486af5e221f55835__;!!ACWV5N9M2RV99hQ!JLKmju0bGutCqqoyNIQKRQdm9TNClcOMG_8UkomHPsMDz-TMEdXilnMB9IHkb8-T4xl5_2lCJlynosRL1eSqYksR8Q$ >> dashboard link: https://urldefense.com/v3/__https://syzkaller.appspot.com/bug?extid=3a080099974c271cd7e9__;!!ACWV5N9M2RV99hQ!JLKmju0bGutCqqoyNIQKRQdm9TNClcOMG_8UkomHPsMDz-TMEdXilnMB9IHkb8-T4xl5_2lCJlynosRL1eTl68Yp4Q$ >> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 >> >> IMPORTANT: if you fix the issue, please add the following tag to the commit: >> Reported-by: syzbot+3a080099974c271cd7e9@syzkaller.appspotmail.com > > +linux-hardening > >> ------------[ cut here ]------------ >> memcpy: detected field-spanning write (size 28) of single field "&errmsg->msg" at net/netlink/af_netlink.c:2447 (size 16) >> WARNING: CPU: 3 PID: 3351 at net/netlink/af_netlink.c:2447 netlink_ack+0x8ac/0xb10 net/netlink/af_netlink.c:2447 >> Modules linked in: >> CPU: 3 PID: 3351 Comm: dhcpcd Not tainted 6.0.0-syzkaller-00593-g725737e7c21d #0 >> Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 >> RIP: 0010:netlink_ack+0x8ac/0xb10 net/netlink/af_netlink.c:2447 >> Code: fa ff ff e8 36 c3 e5 f9 b9 10 00 00 00 4c 89 ee 48 c7 c2 20 3f fb 8a 48 c7 c7 80 3f fb 8a c6 05 e8 98 34 06 01 e8 26 77 a6 01 <0f> 0b e9 3a fa ff ff 41 be 00 01 00 00 41 bd 14 00 00 00 e9 ea fd >> RSP: 0018:ffffc900220e7758 EFLAGS: 00010282 >> RAX: 0000000000000000 RBX: ffff88801a798a80 RCX: 0000000000000000 >> RDX: ffff8880151c0180 RSI: ffffffff81611cb8 RDI: fffff5200441cedd >> RBP: ffff88801ed850c0 R08: 0000000000000005 R09: 0000000000000000 >> R10: 0000000080000000 R11: 0000000000000000 R12: 0000000000000000 >> R13: 000000000000001c R14: ffff88801ec8e400 R15: ffff88801ec8e414 >> FS: 00007faef0af8740(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 00007fff6adbe000 CR3: 0000000027683000 CR4: 0000000000150ee0 >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 >> Call Trace: >> >> netlink_rcv_skb+0x33d/0x420 net/netlink/af_netlink.c:2507 >> genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 >> netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] >> netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 >> netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921 >> sock_sendmsg_nosec net/socket.c:714 [inline] >> sock_sendmsg+0xcf/0x120 net/socket.c:734 >> ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 >> ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 >> __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565 >> do_syscall_x64 arch/x86/entry/common.c:50 [inline] >> do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 >> entry_SYSCALL_64_after_hwframe+0x63/0xcd >> RIP: 0033:0x7faef0bf0163 >> Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 89 54 24 1c 48 >> RSP: 002b:00007fff6adbdc48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e >> RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faef0bf0163 >> RDX: 0000000000000000 RSI: 00007fff6adbdc90 RDI: 0000000000000010 >> RBP: 00007fff6adc1ed8 R08: 0000000000000000 R09: 0000000000000000 >> R10: 00007faef0c6ffc0 R11: 0000000000000246 R12: 0000000000000010 >> R13: 00007fff6adc1cf0 R14: 0000000000000000 R15: 000055e5ebce0290 >> >> >> >> --- >> This report is generated by a bot. It may contain errors. >> See https://urldefense.com/v3/__https://goo.gl/tpsmEJ__;!!ACWV5N9M2RV99hQ!JLKmju0bGutCqqoyNIQKRQdm9TNClcOMG_8UkomHPsMDz-TMEdXilnMB9IHkb8-T4xl5_2lCJlynosRL1eRqES2pIA$ for more information about syzbot. >> syzbot engineers can be reached at syzkaller@googlegroups.com. >> >> syzbot will keep track of this issue. See: >> https://urldefense.com/v3/__https://goo.gl/tpsmEJ*status__;Iw!!ACWV5N9M2RV99hQ!JLKmju0bGutCqqoyNIQKRQdm9TNClcOMG_8UkomHPsMDz-TMEdXilnMB9IHkb8-T4xl5_2lCJlynosRL1eSY24iMTg$ for how to communicate with syzbot. >> >> -- >> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. >> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com. >> To view this discussion on the web visit https://urldefense.com/v3/__https://groups.google.com/d/msgid/syzkaller-bugs/000000000000a793cc05ea313b87*40google.com__;JQ!!ACWV5N9M2RV99hQ!JLKmju0bGutCqqoyNIQKRQdm9TNClcOMG_8UkomHPsMDz-TMEdXilnMB9IHkb8-T4xl5_2lCJlynosRL1eTagCl4GQ$ .