On Thu, May 03, 2018 at 01:24:25PM -0600, Ross Zwisler wrote:
The following series gets the radix tree test suite compiling again
the current linux/master, adds a unit test which exposes a race in the
radix tree multi-order iteration code, and then fixes that race.
This race was initially hit on a v4.15 based kernel and results in a GP
fault. I've described the race in detail in patches 4 and 5.
The fix is simple and necessary, and I think it should be merged for
This tree has gotten positive build confirmation from the 0-day bot,
passes the updated radix tree test suite, xfstests, and the original
test that was hitting the race with the v4.15 based kernel.
Ross Zwisler (5):
radix tree test suite: fix mapshift build target
radix tree test suite: fix compilation issue
radix tree test suite: add item_delete_rcu()
radix tree test suite: multi-order iteration race
radix tree: fix multi-order iteration race
lib/radix-tree.c | 6 ++--
tools/include/linux/spinlock.h | 3 +-
tools/testing/radix-tree/Makefile | 6 ++--
tools/testing/radix-tree/multiorder.c | 63 +++++++++++++++++++++++++++++++++++
tools/testing/radix-tree/test.c | 19 +++++++++++
tools/testing/radix-tree/test.h | 3 ++
6 files changed, 91 insertions(+), 9 deletions(-)
Ping on this series. Does anyone have any feedback? Matthew?
I'd really like to get it into v4.17.
We can take it through the libnvdimm tree, if that's easiest.