lkml.org 
[lkml]   [2024]   [Apr]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/3] mm/hugetlb: Fix missing hugetlb_lock for memcg resv uncharge
Date
Should fix the recent syzbot report for:

https://lore.kernel.org/all/000000000000ee06de0616177560@google.com/

Patch 1 is a small fixup where I notice mm-unstable crashes with the new
hugetlb memcg accounting when testing the changes.

Patch 2 should be the fix to the reported issue.

Patch 3 is an oneliner to add an assertion similar to what found the issue
in patch 2.

Only smoke tested over a bunch of hugetlb unit tests. Reviews welcomed.

Thanks,

Peter Xu (3):
fixup! mm: always initialise folio->_deferred_list
mm/hugetlb: Fix missing hugetlb_lock for resv uncharge
mm/hugetlb: Assert hugetlb_lock in __hugetlb_cgroup_commit_charge

mm/hugetlb.c | 5 ++++-
mm/hugetlb_cgroup.c | 2 +-
mm/memcontrol.c | 1 +
3 files changed, 6 insertions(+), 2 deletions(-)

--
2.44.0


\
 
 \ /
  Last update: 2024-04-17 23:18    [W:0.204 / U:0.668 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site