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: [<ffffffffc0328b9c>] mlx5e_sq_xmit+0x1c/0xd80 [mlx5_core] [ 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:[<ffffffffc0328b9c>] [<ffffffffc0328b9c>] 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] [<ffffffff81875480>] ? consume_skb+0x80/0x150 [ 47.495178] [<ffffffff81a08415>] ? packet_rcv+0x65/0x6d0 [ 47.501244] [<ffffffffc03299ae>] mlx5e_xmit+0x2e/0x40 [mlx5_core] [ 47.508169] [<ffffffff818959d4>] dev_hard_start_xmit+0x384/0x650 [ 47.515007] [<ffffffff818951bb>] ? validate_xmit_skb.isra.80+0x4b/0x4e0 [ 47.522516] [<ffffffff818d036f>] sch_direct_xmit+0x19f/0x360 [ 47.528963] [<ffffffff81896565>] __dev_queue_xmit+0x6e5/0xaa0 [ 47.535502] [<ffffffff81875480>] ? consume_skb+0x80/0x150 [ 47.542723] [<ffffffff81896958>] dev_queue_xmit+0x18/0x30 [ 47.549856] [<ffffffffc08d1d54>] vlan_dev_hard_start_xmit+0x104/0x210 [8021q] [ 47.558933] [<ffffffff818959d4>] dev_hard_start_xmit+0x384/0x650 [ 47.566738] [<ffffffff8189675a>] __dev_queue_xmit+0x8da/0xaa0 [ 47.574246] [<ffffffff81896958>] dev_queue_xmit+0x18/0x30 [ 47.581349] [<ffffffff818a2d07>] neigh_connected_output+0x107/0x170 [ 47.589433] [<ffffffff819a3e9f>] ip6_finish_output2+0x23f/0x720 [ 47.597128] [<ffffffff81430f32>] ? selinux_ipv6_postroute+0x22/0x30 [ 47.605207] [<ffffffff819a666b>] ip6_finish_output+0x13b/0x1e0 [ 47.612809] [<ffffffff819a6777>] ip6_output+0x67/0x1c0 [ 47.619619] [<ffffffff819a6530>] ? ip6_fragment+0xd80/0xd80 [ 47.626903] [<ffffffff819fb80d>] ip6_local_out+0x4d/0x60 [ 47.633884] [<ffffffff819a703b>] ip6_send_skb+0x2b/0xb0 [ 47.640773] [<ffffffff819a713d>] ip6_push_pending_frames+0x7d/0x90 [ 47.648710] [<ffffffff819d533d>] rawv6_sendmsg+0xd2d/0x1210 [ 47.655938] [<ffffffff8128f70a>] ? do_wp_page+0x3ba/0x910 [ 47.662944] [<ffffffff8142a970>] ? sock_has_perm+0x80/0xb0 [ 47.670020] [<ffffffff8194f2c7>] inet_sendmsg+0x97/0xf0 [ 47.676778] [<ffffffff818673f8>] sock_sendmsg+0x58/0x90 [ 47.683505] [<ffffffff81868148>] SYSC_sendto+0x138/0x1b0 [ 47.690302] [<ffffffff8109d5a8>] ? __do_page_fault+0x338/0x9d0 [ 47.697656] [<ffffffff8116b131>] ? ktime_get_with_offset+0x71/0x130 [ 47.705481] [<ffffffff81163ee7>] ? posix_get_boottime+0x37/0x60 [ 47.712904] [<ffffffff81868b36>] SyS_sendto+0x16/0x20 [ 47.719346] [<ffffffff81a336b2>] 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 [<ffffffffc0328b9c>] mlx5e_sq_xmit+0x1c/0xd80 [mlx5_core] [ 47.758755] RSP <ffff88103751f7d0> [ 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@
--
Doug Ledford <dledf...@redhat.com>
GPG KeyID: 0E572FDD
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