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received-spf: None (protection.outlook.com: mellanox.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: okMDQjsLLuDEmKFzaRFcA6dSGo7pWgvKvaXA6EfOZltrhCABqYeKmqH0ivSTvEYeTurGLd0xDg8NcghreDKMym0JmHr+cPPCvOWtYfhJrIBE6gfp29+J/X+I4Ev9q0liUMlsU/Oev+cWHObt4bTzpduFhZIUItOzf8ghL1Ro58FYZyl5tRzZ0qN0+U0YLyXnOG2ewhPy7yrLWAwKqcZ/L/wY0rqfmf3iqo0BnJDjzhCiBQKNGNJzeTEOM/njWBJEytX4b41StTle4QOdf7Nn3TBhPIEIGvmrErt477YEy+YbXeRDtIuPdocMQCdMpn+WFZR6NVjrKfT5wD7nx3F6gHZ1yFFwAQm847QYdFD//P7W7cDWIe5DPjCMBG3NJEQtBQlzXhuq91Dgzwv0K7i4mBdj5OanUeCX20xQH+PYsIs= Content-Type: text/plain; charset="us-ascii" Content-ID: <435B9CE2D715634EABDB7AC1379F0337@eurprd05.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: c4db1b64-9133-4898-38d4-08d6b11bbaec X-MS-Exchange-CrossTenant-originalarrivaltime: 25 Mar 2019 12:16:38.1813 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR05MB4577 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org + Dmitry On Sat, Mar 23, 2019 at 07:16:01PM -0700, syzbot wrote: > syzbot has bisected this bug to: >=20 > commit 7607dd35fc34893214284cca740d015154d20452 > Author: Ido Schimmel > Date: Mon Jul 17 12:15:30 2017 +0000 >=20 > mlxsw: spectrum: Trap IPv4 packets with Router Alert option >=20 > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=3D14e0ac0720= 0000 > start commit: 645ff1e8 Merge branch 'for-linus' of git://git.kernel.org= /.. > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=3D16e0ac0720= 0000 > console output: https://syzkaller.appspot.com/x/log.txt?x=3D12e0ac0720000= 0 > kernel config: https://syzkaller.appspot.com/x/.config?x=3D20271e14bc1c8= 7f0 > dashboard link: https://syzkaller.appspot.com/bug?extid=3D987e48d84abddbe= 2506d > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=3D13c69d20c00= 000 >=20 > Reported-by: syzbot+987e48d84abddbe2506d@syzkaller.appspotmail.com > Fixes: 7607dd35fc34 ("mlxsw: spectrum: Trap IPv4 packets with Router Aler= t > option") >=20 > For information about bisection process see: https://goo.gl/tpsmEJ#bisect= ion Dmitry, The bisection is probably wrong. Above mentioned commit is specific to mlxsw which is not even present in the provided kernel config. I see that this also appears in the web interface [1] which might be misleading to some people. Might be worthwhile to add a command for syzbot that tells it that bisection is wrong? [1] https://syzkaller.appspot.com/bug?id=3Db658eb696c8279d9951a4ceea79efba8= a1d12467