BMC/Intel-BMC/linux.git/tools/testing, branch v5.4.20

selftests/bpf: Test freeing sockmap/sockhash with a socket in it

2020-02-14T21:34:09+00:00

commit 5d3919a953c3c96c02fc7a337f8376cde43ae31f upstream. Commit 7e81a3530206 ("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: 7e81a3530206 ("bpf: Sockmap, ensure sock lock held during tear down") Signed-off-by: Jakub Sitnicki Signed-off-by: Daniel Borkmann Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20200206111652.694507-4-jakub@cloudflare.com Signed-off-by: Greg Kroah-Hartman

selftests: bpf: Ignore FIN packets for reuseport tests

2020-02-11T12:35:30+00:00

commit 8bec4f665e0baecb5f1b683379fc10b3745eb612 upstream. The reuseport tests currently suffer from a race condition: FIN packets count towards DROP_ERR_SKB_DATA, since they don't contain a valid struct cmd. Tests will spuriously fail depending on whether check_results is called before or after the FIN is processed. Exit the BPF program early if FIN is set. Fixes: 91134d849a0e ("bpf: Test BPF_PROG_TYPE_SK_REUSEPORT") Signed-off-by: Lorenz Bauer Signed-off-by: Daniel Borkmann Reviewed-by: Jakub Sitnicki Acked-by: Martin KaFai Lau Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20200124112754.19664-3-lmb@cloudflare.com Signed-off-by: Greg Kroah-Hartman

selftests: bpf: Use a temporary file in test_sockmap

2020-02-11T12:35:30+00:00

commit c31dbb1e41d1857b403f9bf58c87f5898519a0bc upstream. Use a proper temporary file for sendpage tests. This means that running the tests doesn't clutter the working directory, and allows running the test on read-only filesystems. Fixes: 16962b2404ac ("bpf: sockmap, add selftests") Signed-off-by: Lorenz Bauer Signed-off-by: Daniel Borkmann Reviewed-by: Jakub Sitnicki Acked-by: Martin KaFai Lau Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20200124112754.19664-2-lmb@cloudflare.com Signed-off-by: Greg Kroah-Hartman

selftests/bpf: Skip perf hw events test if the setup disabled it

2020-02-11T12:35:30+00:00

commit f1c3656c6d9c147d07d16614455aceb34932bdeb upstream. The same with commit 4e59afbbed96 ("selftests/bpf: skip nmi test when perf hw events are disabled"), it would make more sense to skip the test_stacktrace_build_id_nmi test if the setup (e.g. virtual machines) has disabled hardware perf events. Fixes: 13790d1cc72c ("bpf: add selftest for stackmap with build_id in NMI context") Signed-off-by: Hangbin Liu Signed-off-by: Daniel Borkmann Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20200117100656.10359-1-liuhangbin@gmail.com Signed-off-by: Greg Kroah-Hartman

selftests/bpf: Fix test_attach_probe

2020-02-11T12:35:29+00:00

commit 580205dd4fe800b1e95be8b6df9e2991f975a8ad upstream. Fix two issues in test_attach_probe: 1. it was not able to parse /proc/self/maps beyond the first line, since %s means parse string until white space. 2. offset has to be accounted for otherwise uprobed address is incorrect. Fixes: 1e8611bbdfc9 ("selftests/bpf: add kprobe/uprobe selftests") Signed-off-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20191219020442.1922617-1-ast@kernel.org Signed-off-by: Greg Kroah-Hartman

tc-testing: fix eBPF tests failure on linux fresh clones

2020-02-11T12:35:29+00:00

commit 7145fcfffef1fad4266aaf5ca96727696916edb7 upstream. when the following command is done on a fresh clone of the kernel tree, [root@f31 tc-testing]# ./tdc.py -c bpf test cases that need to build the eBPF sample program fail systematically, because 'buildebpfPlugin' is unable to install the kernel headers (i.e, the 'khdr' target fails). Pass the correct environment to 'make', in place of ENVIR, to allow running these tests. Fixes: 4c2d39bd40c1 ("tc-testing: use a plugin to build eBPF program") Signed-off-by: Davide Caratti Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

selftests/bpf: Fix perf_buffer test on systems w/ offline CPUs

2020-02-11T12:35:29+00:00

commit 91cbdf740a476cf2c744169bf407de2e3ac1f3cf upstream. Fix up perf_buffer.c selftest to take into account offline/missing CPUs. Fixes: ee5cf82ce04a ("selftests/bpf: test perf buffer API") Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20191212013621.1691858-1-andriin@fb.com Signed-off-by: Greg Kroah-Hartman

libbpf: Fix BTF-defined map's __type macro handling of arrays

2020-02-01T09:34:47+00:00

[ Upstream commit a53ba15d81995868651dd28a85d8045aef3d4e20 ] Due to a quirky C syntax of declaring pointers to array or function prototype, existing __type() macro doesn't work with map key/value types that are array or function prototype. One has to create a typedef first and use it to specify key/value type for a BPF map. By using typeof(), pointer to type is now handled uniformly for all kinds of types. Convert one of self-tests as a demonstration. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20191004040211.2434033-1-andriin@fb.com Signed-off-by: Sasha Levin

kselftests: cgroup: Avoid the reuse of fd after it is deallocated

2020-01-26T09:01:07+00:00

[ Upstream commit d671fa6393d6788fc65555d4643b71cb3a361f36 ] It is necessary to set fd to -1 when inotify_add_watch() fails in cg_prepare_for_wait. Otherwise the fd which has been closed in cg_prepare_for_wait may be misused in other functions such as cg_enter_and_wait_for_frozen and cg_freeze_wait. Fixes: 5313bfe425c8 ("selftests: cgroup: add freezer controller self-tests") Signed-off-by: Hewenliang Signed-off-by: Tejun Heo Signed-off-by: Sasha Levin

selftests: gen_kselftest_tar.sh: Do not clobber kselftest/

2020-01-26T09:01:06+00:00

[ Upstream commit ea1bf0bb18c0bd627d7b551196453ff2fff44225 ] The default installation location for gen_kselftest_tar.sh was still "kselftest/" which collides with the existing directory. Instead, this moves the installation target into "kselftest_install/kselftest/" and adjusts the tar creation accordingly. This also adjusts indentation and logic to be consistent. Fixes: 42d46e57ec97 ("selftests: Extract single-test shell logic from lib.mk") Signed-off-by: Kees Cook Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin