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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-09-04 10:43:19 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 07:58:36 -0700 |
| commit | 6668ed271eaefaa63e686bdfbedaeb7b8e492722 (patch) | |
| tree | 58e8288fead484f6755ad0815fc74c3742663761 /drivers/md/dm-vdo/Makefile | |
| download | linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.tar.gz linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.zip | |
selftests/bpf: Reject graph kptr use after RCU unlockgrafted
Add a sleepable verifier test that loads a graph-node local kptr in an
explicit RCU read-side critical section, then passes its node to
bpf_rbtree_remove() after the section ends.
Before the verifier fix, the stale NON_OWN_REF flag makes the node look like
a live borrowed reference and the program is accepted. After the fix, the
pointer is demoted without NON_OWN_REF and the graph kfunc argument is
rejected.
Also exercise a graph kptr loaded while a spin lock provides implicit RCU
protection. The pointer must be invalidated when the lock is released, which
guards the required ordering between non-owning-reference invalidation and
RCU demotion.
Update the existing fault-protected load test state description. The
post-unlock pointer no longer carries NON_OWN_REF, but remains readable
because the load is rewritten to use BPF_PROBE_MEM.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/md/dm-vdo/Makefile')
| -rw-r--r-- | drivers/md/dm-vdo/Makefile | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/md/dm-vdo/Makefile b/drivers/md/dm-vdo/Makefile new file mode 100644 index 000000000..9476957bf --- /dev/null +++ b/drivers/md/dm-vdo/Makefile @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: GPL-2.0-only + +ccflags-y := -I$(src) -I$(src)/indexer + +obj-$(CONFIG_DM_VDO) += dm-vdo.o + +dm-vdo-objs := \ + action-manager.o \ + admin-state.o \ + block-map.o \ + completion.o \ + data-vio.o \ + dedupe.o \ + dm-vdo-target.o \ + dump.o \ + encodings.o \ + errors.o \ + flush.o \ + funnel-queue.o \ + funnel-workqueue.o \ + int-map.o \ + io-submitter.o \ + logger.o \ + logical-zone.o \ + memory-alloc.o \ + message-stats.o \ + murmurhash3.o \ + packer.o \ + permassert.o \ + physical-zone.o \ + priority-table.o \ + recovery-journal.o \ + repair.o \ + slab-depot.o \ + status-codes.o \ + string-utils.o \ + thread-device.o \ + thread-registry.o \ + thread-utils.o \ + vdo.o \ + vio.o \ + wait-queue.o \ + indexer/chapter-index.o \ + indexer/config.o \ + indexer/delta-index.o \ + indexer/funnel-requestqueue.o \ + indexer/geometry.o \ + indexer/index.o \ + indexer/index-layout.o \ + indexer/index-page-map.o \ + indexer/index-session.o \ + indexer/io-factory.o \ + indexer/open-chapter.o \ + indexer/radix-sort.o \ + indexer/sparse-cache.o \ + indexer/volume.o \ + indexer/volume-index.o |