futex: Adjust absolute futex timeouts with per time namespace offset

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For all commands except FUTEX_WAIT, the timeout is interpreted as an
absolute value. This absolute value is inside the task's time namespace and
has to be converted to the host's time.

Fixes: 5a590f35ad ("posix-clocks: Wire up clock_gettime() with timens offsets")
Reported-by: Hans van der Laan <j.h.vanderlaan@student.utwente.nl>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20201015160020.293748-1-avagin@gmail.com

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Andrei Vagin 2020-10-15 09:00:19 -07:00 • committed by Thomas Gleixner

parent 270315b823

commit c2f7d08ccc

1 changed files with 5 additions and 0 deletions

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kernel/futex.c

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