Syzbot found a nasty race between large page splitting and page lookup.
Details in the commit log, but fortunately it has a reliable reproducer.
I thought it better to send this one to you straight away.
The other commit fixes the test suite build, again.
The following changes since commit 281b9d9a4b02229b602a14f7540206b0fbe4134f:
Merge branch 'akpm' (patches from Andrew) (2022-04-22 10:10:43 -0700)
are available in the Git repository at:
git://git.infradead.org/users/willy/xarray.git tags/xarray-5.18a
for you to fetch changes up to 63b1898fffcd8bd81905b95104ecc52b45a97e21:
XArray: Disallow sibling entries of nodes (2022-04-22 15:35:40 -0400)
----------------------------------------------------------------
XArray: Two fixes for 5.18
- Fix the test suite build for kmem_cache_alloc_lru()
- Fix a rare race between split and load
----------------------------------------------------------------
Matthew Wilcox (Oracle) (2):
tools: Add kmem_cache_alloc_lru()
XArray: Disallow sibling entries of nodes
lib/xarray.c | 2 ++
tools/include/linux/slab.h | 8 +++++++-
tools/testing/radix-tree/linux.c | 3 ++-
3 files changed, 11 insertions(+), 2 deletions(-)
