linux/tools/testing
Jakub Sitnicki 5d3919a953 selftests/bpf: Test freeing sockmap/sockhash with a socket in it
Commit 7e81a35302 ("bpf: Sockmap, ensure sock lock held during tear
down") introduced sleeping issues inside RCU critical sections and while
holding a spinlock on sockmap/sockhash tear-down. There has to be at least
one socket in the map for the problem to surface.

This adds a test that triggers the warnings for broken locking rules. Not a
fix per se, but rather tooling to verify the accompanying fixes. Run on a
VM with 1 vCPU to reproduce the warnings.

Fixes: 7e81a35302 ("bpf: Sockmap, ensure sock lock held during tear down")
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200206111652.694507-4-jakub@cloudflare.com
2020-02-07 22:36:26 +01:00
..
fault-injection
ktest
kunit kunit/kunit_tool_test: Test '--build_dir' option run 2019-12-23 10:52:41 -07:00
nvdimm remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
radix-tree
scatterlist
selftests selftests/bpf: Test freeing sockmap/sockhash with a socket in it 2020-02-07 22:36:26 +01:00
vsock vsock_test: add SOCK_STREAM MSG_PEEK test 2019-12-20 21:09:21 -08:00