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Groups > linux.kernel > #1600932
| From | Chris Wilson <chris@chris-wilson.co.uk> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH RESEND v1] locking/ww_mutex: Prevent read of uninitialized memory |
| Date | 2017-03-14 22:50 +0100 |
| Message-ID | <tl2ul-6hH-15@gated-at.bofh.it> (permalink) |
| References | <tl0Ce-4V8-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, Mar 14, 2017 at 03:44:02PM -0400, Robert Foss wrote:
> On "missed ABBA deadlock" abba.result is read, but not initialized
> in all situations.
>
> Detected by CoverityScan, CID#1402035 ("Uninitialized scalar variable")
It's unconditionally set by the worker, and only accessed by the parent
after the flush_work() barrier.
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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[PATCH RESEND v1] locking/ww_mutex: Prevent read of uninitialized memory Robert Foss <robert.foss@collabora.com> - 2017-03-14 20:50 +0100 Re: [PATCH RESEND v1] locking/ww_mutex: Prevent read of uninitialized memory Chris Wilson <chris@chris-wilson.co.uk> - 2017-03-14 22:50 +0100 Re: [PATCH RESEND v1] locking/ww_mutex: Prevent read of uninitialized memory kbuild test robot <lkp@intel.com> - 2017-03-17 03:00 +0100
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