Messages in this thread | | | From | Ondrej Mosnacek <> | Date | Mon, 8 Aug 2022 12:13:17 +0200 | Subject | Binder regression caused by commit a43cfc87caaf |
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Hello,
FYI, since commit a43cfc87caaf ("android: binder: stop saving a pointer to the VMA") (found by git bisect) the binder test in selinux-testsuite [1] started to trigger a lockdep assert BUG() in find_vma() - see the end of [2] for an example.
A minimal reproducer is: ``` git clone https://github.com/SELinuxProject/selinux-testsuite.git cd selinux-testsuite/tests/binder make setenforce 0 # if SELinux is enabled ./init_binder.sh || true ./manager -n -v & sleep 2 ./service_provider -n -v ``` Requires the equivalent of libselinux-devel, make, gcc, and git-core Fedora packages. The last command will trigger the BUG; on good kernels it will successfully enter the ioctl loop.
[1] https://github.com/SELinuxProject/selinux-testsuite/ [2] https://s3.us-east-1.amazonaws.com/arr-cki-prod-datawarehouse-public/datawarehouse-public/2022/08/07/redhat:606549366/build_x86_64_redhat:606549366_x86_64/tests/5/results_0001/console.log/console.log
-- Ondrej Mosnacek Senior Software Engineer, Linux Security - SELinux kernel Red Hat, Inc.
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