[PATCH v2 0/2] Fix slab-out-of-bounds Write in dbgfs_rm_context_write

From: SeongJae Park
Date: Mon Nov 07 2022 - 11:50:18 EST


Changes from v1
(https://lore.kernel.org/damon/20221031182554.7882-1-sj@xxxxxxxxxx/)
- Rebase on latest mm-unstable

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This patchset is for fixing (patch 1) the syzbot-reported
slab-out-of-bounds write in dbgfs_rm_context_write[1], and adding a
selftest for the bug (patch 2).

[1] https://lore.kernel.org/damon/000000000000ede3ac05ec4abf8e@xxxxxxxxxx/

SeongJae Park (2):
mm/damon/dbgfs: check if rm_contexts input is for a real context
selftests/damon: test non-context inputs to rm_contexts file

mm/damon/dbgfs.c | 7 +++++++
tools/testing/selftests/damon/Makefile | 1 +
.../damon/debugfs_rm_non_contexts.sh | 19 +++++++++++++++++++
3 files changed, 27 insertions(+)
create mode 100755 tools/testing/selftests/damon/debugfs_rm_non_contexts.sh

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2.25.1