hang in mlx5_create_map_eq in Ubuntu 15.04 due to not getting interrupts (mlx5) (Mellanox)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Medium
|
Leann Ogasawara |
Bug Description
---Problem Description---
While installing Ubuntu 15.04 LE in powerNV system, I see the following error:
[ 242.141309] INFO: task systemd-udevd:623 blocked for more than 120 seconds.
[ 242.141408] Tainted: G E 3.18.0-12-generic #13-Ubuntu
[ 242.141463] "echo 0 > /proc/sys/
[ 242.141529] systemd-udevd D 00003fff8ad27d24 0 623 603 0x00040000
[ 242.141597] Call Trace:
[ 242.141625] [c000002fe2dbad50] [0000000500000000] 0x500000000 (unreliable)
Mellanox Error from trace:
[ 2.609984] /build/
[ 2.611142] Freeing unused kernel memory: 5760K (c000000000d90000 - c000000001330000)
starting version 218
[ 2.664785] scsi_transport_fc: module verification failed: signature and/or required key missing - tainting kernel
[ 2.668055] mlx4_core: Mellanox ConnectX core driver v2.2-1 (Feb, 2014)
[ 2.668124] mlx4_core: Initializing 0000:01:00.0
---uname output---
Linux powerio-le21 3.16.0-23-generic #31-Ubuntu SMP Tue Oct 21 17:55:08 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux
---Additional Hardware Info---
Mellanox device which seems to be causing the error:
0000:01:00.0 Ethernet controller: Mellanox Technologies MT26448 [ConnectX EN 10GigE, PCIe 2.0 5GT/s] (rev b0)
Machine Type = 8286-42A PowerNV
---Debugger---
---Steps to Reproduce---
1. Start install of Ubuntu 15.04 LE
2. Installer does not start at all. We see the error
Install ISO Information: Ubuntu 15.04 - vivid-server-
Install method: DVD
Install disk info: # ethtool -i eth17
driver: mlx4_en
version: 2.2-1 (Feb 2014)
firmware-version: 2.9.1326
bus-info: 0000:01:00.0
supports-
supports-test: yes
supports-
supports-
supports-
The issue is that we are not getting interrupts.
I forced to install Mellanox OFED in my virtual guest with ubuntu 15.04 and I do not see the issue with that code so I will try to look tonight for differences between that code and upstream to see if I can spot the issue.
The problem is related to the following commit:
They forgot to set the page size for UAR to adapter so that is why is not working. So any kernel for power that gets that patch in mlx5 will see this issue.
affects: | ubuntu → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
importance: | Undecided → Critical |
importance: | Critical → Medium |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
assignee: | nobody → Leann Ogasawara (leannogasawara) |
status: | Confirmed → In Progress |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Committed |
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