Nasty Lockup Issue Still Being Investigated for Linux 3.18

Re:Nasty Lockup Issue Still Being Investigated for Linux 3.18 by spydum on Sunday November 30, 2014 @02:03PM (#8677692)

I find it interesting someone posted a patch to the KERNEL with a comment of "doesnt always work?"

It would seem prudent to invest a bit more time to understand why a particular thing doesn't work, for such a critical bit of code (I'm not implying I know that this is the cause or related to these new found bugs, but the article mentions it, so I'm just a little surprised).

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Re:Nasty Lockup Issue Still Being Investigated for Linux 3.18 by cbsmith on Sunday November 30, 2014 @04:07PM (#8678093)

> It would seem prudent to invest a bit more time to understand why a particular thing doesn't work, for such a critical bit of code (I'm not implying I know that this is the cause or related to these new found bugs, but the article mentions it, so I'm just a little surprised).

It would indeed. That's no reason not to post the patch though. Welcome to the imperfect world of software development.

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Re:Nasty Lockup Issue Still Being Investigated for Linux 3.18 by hga on Sunday November 30, 2014 @03:50PM (#8678022)

Following the links, the full comment text is:

  /* On Xen the line below does not always work. Needs investigating! */

So this is in theory a lower priority issue for the mainline kernel. Especially since it apparently hasn't caused problems for ~ 8-9 years during which Xen and Linux have been thoroughly put to the test (e.g. Amazon AWS).

Could be a "tearing out your hair" desperate sort of thing where you cast around for any possible cause....

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