BDA Nodes Go Into Kernel Panic After Cross Rack Cabling Of Infiniband (Doc ID 2070795.1)

Last updated on NOVEMBER 13, 2015

Applies to:

Big Data Appliance Integrated Software - Version 4.2.0 and later
Linux x86-64

Symptoms

Cabling an Exadata Cluster to a BDA Cluster Causes BDA Nodes to go into a Kernel panic.

[<ffffffffa0381132>] ipoib_cm_send+0x2a2/0x580 [ib_ipoib]
[<ffffffffa01c3471>] ? mlx4_free_cmd_mailbox+0x31/0x40 [mlx4_core]
[<ffffffffa01db387>] ? __mlx4_qp_modify+0x1c7/0x440 [mlx4_core]
[<ffffffffa0379103>] ipoib_start_xmit+0x163/0x220 [ib_ipoib]
[<ffffffff814402d0>] dev_hard_start_xmit+0x290/0x570
[<ffffffff8145de9e>] sch_direct_xmit+0xfe/0x1d0
[<ffffffff814406fb>] dev_queue_xmit+0x14b/0x400
[<ffffffffa0380917>] ipoib_cm_rep_handler+0x217/0x360 [ib_ipoib]
[<ffffffff81041079>] ? default_spin_lock_flags+0x9/0x10
[<ffffffffa033cf20>] ? cm_rep_handler+0x440/0x440 [ib_cm]
[<ffffffffa03814ab>] ipoib_cm_tx_handler+0x9b/0x2c0 [ib_ipoib]
[<ffffffffa01fdf1b>] ? wait_for_response+0xab/0xc0 [ib_mad]
[<ffffffffa033cf20>] ? cm_rep_handler+0x440/0x440 [ib_cm]
[<ffffffffa0339887>] cm_process_work+0x27/0x110 [ib_cm]
[<ffffffffa033cf20>] ? cm_rep_handler+0x440/0x440 [ib_cm]
[<ffffffffa033cdf0>] cm_rep_handler+0x310/0x440 [ib_cm]
[<ffffffffa033cf85>] cm_work_handler+0x65/0x130 [ib_cm]
[<ffffffff8108a6a6>] process_one_work+0x136/0x450
[<ffffffff8108bc80>] worker_thread+0x170/0x3c0
[<ffffffff8108bb10>] ? manage_workers+0x120/0x120
[<ffffffff81090ec6>] kthread+0x96/0xa0
[<ffffffff815166c4>] kernel_thread_helper+0x4/0x10
[<ffffffff81090e30>] ? kthread_worker_fn+0x1a0/0x1a0
[<ffffffff815166c0>] ? gs_change+0x13/0x13

RIP  [<ffffffff8143d85a>] skb_checksum_help+0x14a/0x1

 

Changes

 Cabled an Exadata Rack to the BDA Cluster.

Cause

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