Mike Rapoport contacted me off-list with a regression in running criu. Periodic tests fail with an RCU stall during execution. Although rare, it is possible to hit this with other uses so this patch should be backported to fix the regression. This patch set adds the fix and a test case to the maple tree test suite. Link: https://lore.kernel.org/linux-mm/20221216185233.2036415-1-Liam.Howlett@xxxxxxxxxx/ V1 changes: - Add stable to CC list - Add tested-by to Mike's Reported-by. - Moved test case to its own commit since the test code was added after the fixed-by commit and isn't part of the fix. Liam R. Howlett (2): maple_tree: Fix mas_spanning_rebalance() on insufficient data test_maple_tree: Add test for mas_spanning_rebalance() on insufficient data lib/maple_tree.c | 4 +++- lib/test_maple_tree.c | 23 +++++++++++++++++++++++ 2 files changed, 26 insertions(+), 1 deletion(-) -- 2.35.1
