Messages in this thread | | | Subject | Re: [PATCH] loop: fix to a race condition due to the early registration of device | From | Anton Volkov <> | Date | Thu, 10 Aug 2017 18:46:46 +0300 |
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Hello, Omar.
It was a purely theoretical race that had been considered to be possible in real-life.
Regards, Anton
On 09.08.2017 01:00, Omar Sandoval wrote: > On Mon, Aug 07, 2017 at 03:37:50PM +0300, Anton Volkov wrote: >> The early device registration made possible a race leading to allocations >> of disks with wrong minors. >> >> This patch moves the device registration further down the loop_init >> function to make the race infeasible. >> >> Found by Linux Driver Verification project (linuxtesting.org). >> >> Signed-off-by: Anton Volkov <avolkov@ispras.ru> >> Reviewed-by: Ming Lei <ming.lei@redhat.com> > > Hi, Anton, > > Were you able to reproduce this issue or was it purely theoretical? If > the former, it'd be nice if you could add a test case to blktests [1]. > > 1: https://github.com/osandov/blktests > > Thanks! > Omar >
-- Anton Volkov Linux Verification Center, ISPRAS web: http://linuxtesting.org e-mail: avolkov@ispras.ru
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