On 03/08/2017 07:47 AM, Jens Axboe wrote: > On 03/08/2017 08:39 AM, gregkh@xxxxxxxxxxxxxxxxxxx wrote: >> >> This is a note to let you know that I've just added the patch titled >> >> loop: fix LO_FLAGS_PARTSCAN hang >> >> to the 4.10-stable tree which can be found at: >> http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary >> >> The filename of the patch is: >> loop-fix-lo_flags_partscan-hang.patch >> and it can be found in the queue-4.10 subdirectory. >> >> If you, or anyone else, feels it should not be added to the stable tree, >> please let <stable@xxxxxxxxxxxxxxx> know about it. >> >> >> From e02898b423802b1f3a3aaa7f16e896da069ba8f7 Mon Sep 17 00:00:00 2001 >> From: Omar Sandoval <osandov@xxxxxx> >> Date: Wed, 1 Mar 2017 10:42:38 -0800 >> Subject: loop: fix LO_FLAGS_PARTSCAN hang >> >> From: Omar Sandoval <osandov@xxxxxx> >> >> commit e02898b423802b1f3a3aaa7f16e896da069ba8f7 upstream. >> >> loop_reread_partitions() needs to do I/O, but we just froze the queue, >> so we end up waiting forever. This can easily be reproduced with losetup >> -P. Fix it by moving the reread to after we unfreeze the queue. >> >> Fixes: ecdd09597a57 ("block/loop: fix race between I/O and set_status") >> Reported-by: Tejun Heo <tj@xxxxxxxxxx> >> Signed-off-by: Omar Sandoval <osandov@xxxxxx> >> Reviewed-by: Ming Lei <tom.leiming@xxxxxxxxx> >> Signed-off-by: Jens Axboe <axboe@xxxxxx> >> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > Why is this being added to a bunch of trees that don't have the commit > that it fixes? It should not go into any of these. > The commit it fixes was marked for stable, which is why I also marked this one for stable. And it looks like that commit is also queued up for these stable releases: http://git.kernel.org/cgit/linux/kernel/git/stable/stable-queue.git/tree/queue-4.10/block-loop-fix-race-between-i-o-and-set_status.patch http://git.kernel.org/cgit/linux/kernel/git/stable/stable-queue.git/tree/queue-4.9/block-loop-fix-race-between-i-o-and-set_status.patch http://git.kernel.org/cgit/linux/kernel/git/stable/stable-queue.git/tree/queue-4.4/block-loop-fix-race-between-i-o-and-set_status.patch So it should be okay.