On Mon, Feb 22, 2021 at 11:54:24AM +0000, Lee Jones wrote: > On Mon, 22 Feb 2021, Zheng Yejian wrote: > > > From: Peter Zijlstra <[email protected]> > > > > commit a97cb0e7b3f4c6297fd857055ae8e895f402f501 upstream. > > > > Both Geert and DaveJ reported that the recent futex commit: > > > > c1e2f0eaf015 ("futex: Avoid violating the 10th rule of futex") > > > > introduced a problem with setting OWNER_DEAD. We set the bit on an > > uninitialized variable and then entirely optimize it away as a > > dead-store. > > > > Move the setting of the bit to where it is more useful. > > > > Reported-by: Geert Uytterhoeven <[email protected]> > > Reported-by: Dave Jones <[email protected]> > > Signed-off-by: Peter Zijlstra (Intel) <[email protected]> > > Cc: Andrew Morton <[email protected]> > > Cc: Linus Torvalds <[email protected]> > > Cc: Paul E. McKenney <[email protected]> > > Cc: Peter Zijlstra <[email protected]> > > Cc: Thomas Gleixner <[email protected]> > > Fixes: c1e2f0eaf015 ("futex: Avoid violating the 10th rule of futex") > > Link: > > http://lkml.kernel.org/r/[email protected] > > Signed-off-by: Ingo Molnar <[email protected]> > > Signed-off-by: Zheng Yejian <[email protected]> > > --- > > kernel/futex.c | 7 +++---- > > 1 file changed, 3 insertions(+), 4 deletions(-) > > Reviewed-by: Lee Jones <[email protected]>
This does not apply to the 4.9.y tree at all right now, are you all sure you got the backport correct? confused, greg k-h
