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[PCA] NULL pointer dereference in RIP ib_mad_recv_done_handler while upgrading managment node (Doc ID 2511518.1)

Last updated on APRIL 25, 2021

Applies to:

Private Cloud Appliance - Version 2.3.1 to 2.4.3 [Release 2.0]
Linux x86-64
This is only seen on Infiniband based PCA racks

Symptoms

Upgrading passive Management node causing active Management Node to crash/kernel panic.

Similar stack trace seen:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000020

Call Trace:
[<ffffffffa03bf273>] ? mlx4_ib_poll_cq+0xb3/0x2a0 [mlx4_ib]
[<ffffffffa039ff8d>] ib_mad_completion_handler+0x7d/0xa0 [ib_mad]
[<ffffffff810a1a41>] process_one_work+0x151/0x4b0
[<ffffffff810a1ec0>] worker_thread+0x120/0x480
[<ffffffff816e4c7b>] ? __schedule+0x30b/0x890
[<ffffffff810a1da0>] ? process_one_work+0x4b0/0x4b0
[<ffffffff810a1da0>] ? process_one_work+0x4b0/0x4b0
[<ffffffff810a709e>] kthread+0xce/0xf0
[<ffffffff810a6fd0>] ? kthread_freezable_should_stop+0x70/0x70
[<ffffffff816e9962>] ret_from_fork+0x42/0x70
[<ffffffff810a6fd0>] ? kthread_freezable_should_stop+0x70/0x70

RIP [<ffffffffa039f926>] ib_mad_recv_done_handler+0x26/0x610 [ib_mad]

Cause

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In this Document
Symptoms
Cause
Solution
References

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