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Re: [PATCH] writeback: verify that underlying dev exists before getting its name

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On Fri, Sep 04, 2015 at 12:45:18PM -0400, Sasha Levin wrote:
> We can't assume there is always an underlying device and must verify that
> as well. Otherwise, we'd deref a NULL ptr here.

Do you have backtrace of this happening?  There's a bug in cleanup
path which causes oops (patch is being tested) and this may just be a
symptom of the same problem.

Thanks.

-- 
tejun
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Re: [PATCH] writeback: verify that underlying dev exists before  getting its name Tejun Heo <tj@kernel.org> - 2015-09-04 18:50 +0200
  Re: [PATCH] writeback: verify that underlying dev exists before getting  its name Sasha Levin <sasha.levin@oracle.com> - 2015-09-04 19:30 +0200
    Re: [PATCH] writeback: verify that underlying dev exists before  getting its name Tejun Heo <tj@kernel.org> - 2015-09-04 19:40 +0200

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