Re: [PATCH 3/3] UBI: Fix possible deadlock in erase_worker()

From: Artem Bityutskiy
Date: Fri Sep 26 2014 - 06:40:54 EST

On Mon, 2014-09-22 at 10:45 +0200, Richard Weinberger wrote:
> If sync_erase() fails with EINTR, ENOMEM, EAGAIN or
> EBUSY erase_worker() re-schedules the failed work.
> This will lead to a deadlock because erase_worker() is called
> with work_sem held in read mode. And schedule_erase() will take
> this lock again.
> Signed-off-by: Richard Weinberger <richard@xxxxxx>

Did you manage to test it?

Why no -stable this time? Not that important, or just something
theoretical and you never actually hit this bug?


Best Regards,
Artem Bityutskiy

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