From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Ledford Subject: mlx5 core/en oops in 4.6-rc6+ Date: Thu, 5 May 2016 12:00:42 -0400 Message-ID: <56df9c0a-39dd-6e07-9466-23195dc60860@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="c8nxeBQQwK4rxmHnRgBiO6SDHvaM6SOer" To: Linux Netdev List Return-path: Received: from mx1.redhat.com ([209.132.183.28]:58485 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754642AbcEEQAt (ORCPT ); Thu, 5 May 2016 12:00:49 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id ECA87AA0AC for ; Thu, 5 May 2016 16:00:43 +0000 (UTC) Received: from linux-ws.xsintricity.com (ovpn-116-18.rdu2.redhat.com [10.10.116.18]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u45G0hNS004109 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 5 May 2016 12:00:43 -0400 Sender: netdev-owner@vger.kernel.org List-ID: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --c8nxeBQQwK4rxmHnRgBiO6SDHvaM6SOer Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Just had this pop up during testing, happened very soon after bootup: [ 47.235925] BUG: unable to handle kernel NULL pointer dereference at 00000000000001e8 [ 47.245057] IP: [] mlx5e_sq_xmit+0x1c/0xd80 [mlx5_co= re] [ 47.252822] PGD 0 [ 47.255218] Oops: 0000 [#1] SMP [ 47.259070] Modules linked in: sch_mqprio bridge 8021q garp mrp stp llc ib_iser libiscsi scsi_transport_iscsi ib_srp scsi_transport_srp ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_sa ib_mad x86_pkg_temp_thermal coretd [ 47.352984] CPU: 18 PID: 1358 Comm: NetworkManager Not tainted 4.6.0-rc6-00004-g7199787 #102 [ 47.362460] Hardware name: Dell Inc. PowerEdge R430/03XKDV, BIOS 1.6.2 01/08/2016 [ 47.370869] task: ffff88103369d000 ti: ffff88103751c000 task.ti: ffff88103751c000 [ 47.379263] RIP: 0010:[] [] mlx5e_sq_xmit+0x1c/0xd80 [mlx5_core] [ 47.389627] RSP: 0018:ffff88103751f7d0 EFLAGS: 00010282 [ 47.395574] RAX: ffff880fe6f51d00 RBX: 0000000000000000 RCX: 0000000000000081 [ 47.403571] RDX: ffff880ff1dc3000 RSI: ffff880fe6f51d00 RDI: 0000000000000000 [ 47.411561] RBP: ffff88103751f828 R08: 0000000000020c80 R09: ffffffff81871e04 [ 47.419563] R10: ffffea003f9bd400 R11: ffff88100116de00 R12: 000000000000003e [ 47.427566] R13: ffff880fe6f51d00 R14: ffff8810240d0090 R15: ffff8810240d0068 [ 47.435557] FS: 00007fd79b882dc0(0000) GS:ffff88103ee40000(0000) knlGS:0000000000000000 [ 47.444625] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.451062] CR2: 00000000000001e8 CR3: 0000001cf86c5000 CR4: 00000000001406e0 [ 47.459053] Stack: [ 47.461306] ffffffff81875480 ffff880fe6f50c00 ffff881d02f9b800 ffff88103751f838 [ 47.469647] ffffffff81a08415 ffff88103751f818 ffff880fe6f51d00 000000000000003e [ 47.477964] ffff881d02f9bd00 ffff8810240d0090 ffff8810240d0068 ffff88103751f838 [ 47.486279] Call Trace: [ 47.489019] [] ? consume_skb+0x80/0x150 [ 47.495178] [] ? packet_rcv+0x65/0x6d0 [ 47.501244] [] mlx5e_xmit+0x2e/0x40 [mlx5_core] [ 47.508169] [] dev_hard_start_xmit+0x384/0x650 [ 47.515007] [] ? validate_xmit_skb.isra.80+0x4b/0x4= e0 [ 47.522516] [] sch_direct_xmit+0x19f/0x360 [ 47.528963] [] __dev_queue_xmit+0x6e5/0xaa0 [ 47.535502] [] ? consume_skb+0x80/0x150 [ 47.542723] [] dev_queue_xmit+0x18/0x30 [ 47.549856] [] vlan_dev_hard_start_xmit+0x104/0x210 [8021q] [ 47.558933] [] dev_hard_start_xmit+0x384/0x650 [ 47.566738] [] __dev_queue_xmit+0x8da/0xaa0 [ 47.574246] [] dev_queue_xmit+0x18/0x30 [ 47.581349] [] neigh_connected_output+0x107/0x170 [ 47.589433] [] ip6_finish_output2+0x23f/0x720 [ 47.597128] [] ? selinux_ipv6_postroute+0x22/0x30 [ 47.605207] [] ip6_finish_output+0x13b/0x1e0 [ 47.612809] [] ip6_output+0x67/0x1c0 [ 47.619619] [] ? ip6_fragment+0xd80/0xd80 [ 47.626903] [] ip6_local_out+0x4d/0x60 [ 47.633884] [] ip6_send_skb+0x2b/0xb0 [ 47.640773] [] ip6_push_pending_frames+0x7d/0x90 [ 47.648710] [] rawv6_sendmsg+0xd2d/0x1210 [ 47.655938] [] ? do_wp_page+0x3ba/0x910 [ 47.662944] [] ? sock_has_perm+0x80/0xb0 [ 47.670020] [] inet_sendmsg+0x97/0xf0 [ 47.676778] [] sock_sendmsg+0x58/0x90 [ 47.683505] [] SYSC_sendto+0x138/0x1b0 [ 47.690302] [] ? __do_page_fault+0x338/0x9d0 [ 47.697656] [] ? ktime_get_with_offset+0x71/0x130 [ 47.705481] [] ? posix_get_boottime+0x37/0x60 [ 47.712904] [] SyS_sendto+0x16/0x20 [ 47.719346] [] entry_SYSCALL_64_fastpath+0x1a/0xa4 [ 47.727230] Code: 05 a9 9f 03 00 01 66 31 47 48 5d c3 0f 1f 00 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 55 49 89 f5 41 54 53 48 89 fb 48 83 ec 30 <0f> b7 87 e8 01 00 00 0f b6 8f ea 01 00 00 45 8b 95 80 00 00 00 [ 47.750336] RIP [] mlx5e_sq_xmit+0x1c/0xd80 [mlx5_core] [ 47.758755] RSP [ 47.763368] CR2: 00000000000001e8 [ 47.767779] ---[ end trace 35565b04ca44e521 ]--- It appears to be intermittent as this machine has booted this kernel multiple times without hitting this. Network setup includes both vlan and non-vlan interfaces. If you need more info from me, please include me on the Cc: as I don't follow netdev@ --=20 Doug Ledford GPG KeyID: 0E572FDD --c8nxeBQQwK4rxmHnRgBiO6SDHvaM6SOer Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJXK24qAAoJELgmozMOVy/d8SUQALm56vslxG7aCYjI8FxBV0t5 9mEWtQ6+UzDH2HeD1hXpn8aOEg6t5cigr03mnf95V/+lV0JjtQ6IG3F7B5YDSx2z Z4HeGd2oqXfLfLhUZig3JNJ1mDX1Eu4Y9mprGJ/1OBv/j8c4qpJc1BE1UGeUmkOO ECpt6TqesZNxrCX3J18QlI85fxXdzPGrUwA2mXSql0HBUXx2RoTdg9t1GcwCPBa0 y4nHyVOrAlZWm6mVILjUUGJV8u4FN+arrE7Lxi0mmYNEYWLkOr+G96P21xXjQ2U0 yoj4qM++aBi95ljkOsJhqQxUXkZUFG098aX7yNlaMXkg2R+4N+Amk7pcxHf4aqcM 50ApXo9ic4pVVaTNuJ3gudWsRF5xjU5wZgKleLtUuqBEC83/zpWY6mciyKVzRzmO kqYxuBI3/YCW2ufcZ3Vara0BwqrR/2ouo8m0vKhOMRvD7VrLsIBVnj6YM14K1k0W QTG1qe93phXwMM7cagTKg5+adJ6/kdOY+hQrHzFBarO2ZewffaiHznC9UpGGy5yU xHAUp7qOJiE7JDFopYcl9ZUdSnhcXDkK8QXuKqJDLHvNF+Zmp8fjrRixdjph5Rl2 ojwXC5/YEfi86sEuJbuTQyt9hE5uKEXGYCe29fDGeB23yTIU6Emp0udKRuat9w9Q jOdeHEL9m5NTh77Nipbi =20AX -----END PGP SIGNATURE----- --c8nxeBQQwK4rxmHnRgBiO6SDHvaM6SOer--