Re: [GIT PULL] md-fixes 20210922

On Sep 22, 2021, at 9:14 AM, Jens Axboe [off-list ref] wrote:

On 9/22/21 10:10 AM, Song Liu wrote:

quoted

Hi Jens, 

Please consider pulling the following changes for md-fixes on top of your 
block-5.15 branch. The changes are:
 1. Fix lock order reversal in md_alloc. (Christoph)
 2. Handle add_disk error in md_alloc. (Luis)
 3. Refactor md sysfs attrs, included because of dependency with 1 and 2. 
    (Christoph). 

I don't think the error handling for add_disk is prudent at this point,
that's something that should go in with the 5.16 cycle. It's been like
that forever, nothing that warrants pushing this for 5.15 at all.

Hmm... I see. The WARN_ON_ONCE at the end of device_add_disk() should be
enough. Then we just need the first commit. Could you please pull the 
following change instead? 

  1. Fix lock order reversal in md_alloc. (Christoph)

Thanks,
Song


The following changes since commit 858560b27645e7e97aca37ee8f232cccd658fbd2:

  blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd (2021-09-15 12:03:18 -0600)

are available in the Git repository at:

   https://git.kernel.org/pub/scm/linux/kernel/git/song/md.git md-fixes

for you to fetch changes up to 7df835a32a8bedf7ce88efcfa7c9b245b52ff139:

  md: fix a lock order reversal in md_alloc (2021-09-22 08:45:58 -0700)

----------------------------------------------------------------
Christoph Hellwig (1):
      md: fix a lock order reversal in md_alloc

 drivers/md/md.c | 5 -----
 1 file changed, 5 deletions(-)