Bug 195277 - sed_opal:OPAL: Error on step function: 0 with error -95: Unknown Error
Summary: sed_opal:OPAL: Error on step function: 0 with error -95: Unknown Error
Status: RESOLVED CODE_FIX
Alias: None
Product: IO/Storage
Classification: Unclassified
Component: Block Layer (show other bugs)
Hardware: x86-64 Linux
: P1 normal
Assignee: Jens Axboe
URL: https://github.com/torvalds/linux/blo...
Keywords:
Depends on:
Blocks:
 
Reported: 2017-04-07 10:15 UTC by Christian Lanig
Modified: 2017-05-23 09:25 UTC (History)
2 users (show)

See Also:
Kernel Version: 4.11-rc5
Subsystem:
Regression: No
Bisected commit-id:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Description Christian Lanig 2017-04-07 10:15:17 UTC 
This message was introduced in my dmesg log with RC4. With RC3 I don't get this message.

The NVMe device is a Samsung SM961.
Comment 1 Scott Bauer 2017-04-07 16:31:54 UTC 
Hi Christian,

Your controller is advertising security send/recv capabilities without supporting OPAL. Since that is the case the nvme driver will attempt to determine which version of opal the drive supports. Since your drive does not support opal it kicks back with an error.

We've submitted a patch to tone down all the logging to the kernel so there isn't any confusion about what is going on.

Thank you.
Comment 2 Christian Lanig 2017-05-23 09:25:56 UTC 
Hi Scott,

thanks for your detailed reply. The issue is solved since 4.12 RC1.
Note You need to log in before you can comment on or make changes to this bug.