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Subject[PATCH AUTOSEL for 4.15 076/189] selftests/bpf: fix test_dev_cgroup
From: Alexei Starovoitov <>

[ Upstream commit 8e6875250a1189e0d8db8b05e18abe63c2744521 ]

The test incorrectly doing
mkdir /mnt/cgroup-test-work-dirtest-bpf-based-device-cgroup
instead of
mkdir /mnt/cgroup-test-work-dir/test-bpf-based-device-cgroup

somehow such mkdir succeeds and new directory appears:

Later cleanup via nftw("/mnt/cgroup-test-work-dir", ...);
doesn't walk this directory.
"rmdir /mnt/cgroup-test-work-dir" succeeds, but bpf program and
dangling cgroup stays in memory.
That's a separate issue on a cgroup side.
For now fix the test.

Fixes: 37f1ba0909df ("selftests/bpf: add a test for device cgroup controller")
Signed-off-by: Alexei Starovoitov <>
Signed-off-by: Daniel Borkmann <>
Signed-off-by: Sasha Levin <>
tools/testing/selftests/bpf/test_dev_cgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_dev_cgroup.c b/tools/testing/selftests/bpf/test_dev_cgroup.c
index 02c85d6c89b0..070bc3c9a873 100644
--- a/tools/testing/selftests/bpf/test_dev_cgroup.c
+++ b/tools/testing/selftests/bpf/test_dev_cgroup.c
@@ -19,7 +19,7 @@

#define DEV_CGROUP_PROG "./dev_cgroup.o"

-#define TEST_CGROUP "test-bpf-based-device-cgroup/"
+#define TEST_CGROUP "/test-bpf-based-device-cgroup/"

int main(int argc, char **argv)
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