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[stable-4.19,Resend,0/7] block layer bugfix

Message ID 20210208150426.62755-1-jinpu.wang@cloud.ionos.com
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Series block layer bugfix | expand

Message

Jinpu Wang Feb. 8, 2021, 3:04 p.m. UTC 
Hi Greg, hi Sasha,

Please consider to include following fixes in to stable tree.
The 6 patches from Ming was fixing a deadlock, they are included around kernel
5.3/4. Would be good to included in 4.19, we hit it during testing, with the fix
we no longer hit the deadlock.

The last one is simple NULL pointer deref fix.

Thanks!
Jack Wang @ IONOS Cloud.


v1: https://lore.kernel.org/stable/20210203132022.92406-1-jinpu.wang@cloud.ionos.com/

Ming Lei (6):
  block: don't hold q->sysfs_lock in elevator_init_mq
  blk-mq: don't hold q->sysfs_lock in blk_mq_map_swqueue
  block: add helper for checking if queue is registered
  block: split .sysfs_lock into two locks
  block: fix race between switching elevator and removing queues
  block: don't release queue's sysfs lock during switching elevator

zhengbin (1):
  block: fix NULL pointer dereference in register_disk

 block/blk-core.c       |  1 +
 block/blk-mq-sysfs.c   | 12 +++++------
 block/blk-mq.c         |  7 ------
 block/blk-sysfs.c      | 49 +++++++++++++++++++++++++++---------------
 block/blk-wbt.c        |  2 +-
 block/blk.h            |  2 +-
 block/elevator.c       | 44 +++++++++++++++++++++----------------
 block/genhd.c          | 10 +++++----
 include/linux/blkdev.h |  2 ++
 9 files changed, 74 insertions(+), 55 deletions(-)

Comments

Greg KH Feb. 25, 2021, 9:06 a.m. UTC | #1 
On Mon, Feb 08, 2021 at 04:04:19PM +0100, Jack Wang wrote:
> Hi Greg, hi Sasha,

> 

> Please consider to include following fixes in to stable tree.

> The 6 patches from Ming was fixing a deadlock, they are included around kernel

> 5.3/4. Would be good to included in 4.19, we hit it during testing, with the fix

> we no longer hit the deadlock.

> 

> The last one is simple NULL pointer deref fix.


All now queued up, thanks.

greg k-h
Jinpu Wang March 4, 2021, 8:38 a.m. UTC | #2 
On Thu, Feb 25, 2021 at 10:06 AM Greg KH <gregkh@linuxfoundation.org> wrote:
>

> On Mon, Feb 08, 2021 at 04:04:19PM +0100, Jack Wang wrote:

> > Hi Greg, hi Sasha,

> >

> > Please consider to include following fixes in to stable tree.

> > The 6 patches from Ming was fixing a deadlock, they are included around kernel

> > 5.3/4. Would be good to included in 4.19, we hit it during testing, with the fix

> > we no longer hit the deadlock.

> >

> > The last one is simple NULL pointer deref fix.

>

> All now queued up, thanks.

>

> greg k-h

Great, thanks!