kernel/linux.git/tools/testing/selftests/bpf, branch v6.13.2

selftests/bpf: Fix btf leak on new btf alloc failure in btf_distill test

2025-02-08T09:01:39+00:00

[ Upstream commit 4a04cb326a6c7f9a2c066f8c2ca78a5a9b87ddab ] Fix btf leak on new btf alloc failure in btf_distill test. Fixes: affdeb50616b ("selftests/bpf: Extend distilled BTF tests to cover BTF relocation") Signed-off-by: Pu Lehui Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20250115100241.4171581-1-pulehui@huaweicloud.com Signed-off-by: Sasha Levin

selftests/bpf: Fix undefined UINT_MAX in veristat.c

2025-02-08T09:01:39+00:00

[ Upstream commit a8d1c48d0720140b53063ff23507845bb2078e92 ] Include in 'veristat.c' to provide a UINT_MAX definition and avoid multiple compile errors against mips64el/musl-libc: veristat.c: In function 'max_verifier_log_size': veristat.c:1135:36: error: 'UINT_MAX' undeclared (first use in this function) 1135 | const int SMALL_LOG_SIZE = UINT_MAX >> 8; | ^~~~~~~~ veristat.c:24:1: note: 'UINT_MAX' is defined in header ''; did you forget to '#include '? 23 | #include +++ |+#include 24 | Fixes: 1f7c33630724 ("selftests/bpf: Increase verifier log limit in veristat") Signed-off-by: Tony Ambardar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20250116075036.3459898-1-tony.ambardar@gmail.com Signed-off-by: Sasha Levin

selftests/bpf: Avoid generating untracked files when running bpf selftests

2025-02-08T09:01:35+00:00

[ Upstream commit 73b9075f334f5debf28646884a320b796b27768d ] Currently, when we run the BPF selftests with the following command: make -C tools/testing/selftests TARGETS=bpf SKIP_TARGETS="" The command generates untracked files and directories with make version less than 4.4: ''' Untracked files: (use "git add ..." to include in what will be committed) tools/testing/selftests/bpfFEATURE-DUMP.selftests tools/testing/selftests/bpffeature/ ''' We lost slash after word "bpf". The reason is slash appending code is as follow: ''' OUTPUT := $(OUTPUT)/ $(eval include ../../../build/Makefile.feature) OUTPUT := $(patsubst %/,%,$(OUTPUT)) ''' This way of assigning values to OUTPUT will never be effective for the variable OUTPUT provided via the command argument [1] and BPF makefile is called from parent Makfile(tools/testing/selftests/Makefile) like: ''' all: ... $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET ''' According to GNU make, we can use override Directive to fix this issue [2]. [1] https://www.gnu.org/software/make/manual/make.html#Overriding [2] https://www.gnu.org/software/make/manual/make.html#Override-Directive Fixes: dc3a8804d790 ("selftests/bpf: Adapt OUTPUT appending logic to lower versions of Make") Signed-off-by: Jiayuan Chen Signed-off-by: Daniel Borkmann Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20241224075957.288018-1-mrpre@163.com Signed-off-by: Sasha Levin

selftests/bpf: Fix fill_link_info selftest on powerpc

2025-02-08T09:01:31+00:00

[ Upstream commit 4d33dc1bc31df80356c49e40dbd3ddff19500bcb ] With CONFIG_KPROBES_ON_FTRACE enabled on powerpc, ftrace_location_range returns ftrace location for bpf_fentry_test1 at offset of 4 bytes from function entry. This is because branch to _mcount function is at offset of 4 bytes in function profile sequence. To fix this, add entry_offset of 4 bytes while verifying the address for kprobe entry address of bpf_fentry_test1 in verify_perf_link_info in selftest, when CONFIG_KPROBES_ON_FTRACE is enabled. Disassemble of bpf_fentry_test1: c000000000e4b080 : c000000000e4b080: a6 02 08 7c mflr r0 c000000000e4b084: b9 e2 22 4b bl c00000000007933c <_mcount> c000000000e4b088: 01 00 63 38 addi r3,r3,1 c000000000e4b08c: b4 07 63 7c extsw r3,r3 c000000000e4b090: 20 00 80 4e blr When CONFIG_PPC_FTRACE_OUT_OF_LINE [1] is enabled, these function profile sequence is moved out of line with an unconditional branch at offset 0. So, the test works without altering the offset for 'CONFIG_KPROBES_ON_FTRACE && CONFIG_PPC_FTRACE_OUT_OF_LINE' case. Disassemble of bpf_fentry_test1: c000000000f95190 : c000000000f95190: 00 00 00 60 nop c000000000f95194: 01 00 63 38 addi r3,r3,1 c000000000f95198: b4 07 63 7c extsw r3,r3 c000000000f9519c: 20 00 80 4e blr [1] https://lore.kernel.org/all/20241030070850.1361304-13-hbathini@linux.ibm.com/ Fixes: 23cf7aa539dc ("selftests/bpf: Add selftest for fill_link_info") Signed-off-by: Saket Kumar Bhaskar Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241209065720.234344-1-skb99@linux.ibm.com Signed-off-by: Sasha Levin

tools/testing/selftests/bpf/test_tc_tunnel.sh: Fix wait for server bind

2025-02-08T09:01:30+00:00

[ Upstream commit e2f0791124a1b6ca8d570110cbd487969d9d41ef ] Commit f803bcf9208a ("selftests/bpf: Prevent client connect before server bind in test_tc_tunnel.sh") added code that waits for the netcat server to start before the netcat client attempts to connect to it. However, not all calls to 'server_listen' were guarded. This patch adds the existing 'wait_for_port' guard after the remaining call to 'server_listen'. Fixes: f803bcf9208a ("selftests/bpf: Prevent client connect before server bind in test_tc_tunnel.sh") Signed-off-by: Marco Leogrande Acked-by: Stanislav Fomichev Link: https://lore.kernel.org/r/20241202204530.1143448-1-leogrande@google.com Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin

selftests/bpf: Actuate tx_metadata_len in xdp_hw_metadata

2025-02-08T09:01:07+00:00

[ Upstream commit 0bee36d1a51366fa57b731f8975f26f92943b43e ] set XDP_UMEM_TX_METADATA_LEN flag to reserve tx_metadata_len bytes of per-chunk metadata. Fixes: d5e726d9143c ("xsk: Require XDP_UMEM_TX_METADATA_LEN to actuate tx_metadata_len") Signed-off-by: Song Yoong Siang Signed-off-by: Martin KaFai Lau Acked-by: Stanislav Fomichev Link: https://patch.msgid.link/20241205044258.3155799-1-yoong.siang.song@intel.com Signed-off-by: Sasha Levin

selftests/bpf: Test bpf_skb_change_tail() in TC ingress

2024-12-20T22:13:31+00:00

Similarly to the previous test, we also need a test case to cover positive offsets as well, TC is an excellent hook for this. Signed-off-by: Cong Wang Signed-off-by: Daniel Borkmann Tested-by: Zijian Zhang Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20241213034057.246437-5-xiyou.wangcong@gmail.com

selftests/bpf: Introduce socket_helpers.h for TC tests

2024-12-20T22:13:31+00:00

Pull socket helpers out of sockmap_helpers.h so that they can be reused for TC tests as well. This prepares for the next patch. Signed-off-by: Cong Wang Signed-off-by: Daniel Borkmann Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20241213034057.246437-4-xiyou.wangcong@gmail.com

selftests/bpf: Add a BPF selftest for bpf_skb_change_tail()

2024-12-20T22:13:31+00:00

As requested by Daniel, we need to add a selftest to cover bpf_skb_change_tail() cases in skb_verdict. Here we test trimming, growing and error cases, and validate its expected return values and the expected sizes of the payload. Signed-off-by: Cong Wang Signed-off-by: Daniel Borkmann Acked-by: John Fastabend Link: https://lore.kernel.org/bpf/20241213034057.246437-3-xiyou.wangcong@gmail.com

selftests/bpf: Fix compilation error in get_uprobe_offset()

2024-12-19T12:24:39+00:00

In get_uprobe_offset(), the call to procmap_query() use the constant PROCMAP_QUERY_VMA_EXECUTABLE, even if PROCMAP_QUERY is not defined. Define PROCMAP_QUERY_VMA_EXECUTABLE when PROCMAP_QUERY isn't. Fixes: 4e9e07603ecd ("selftests/bpf: make use of PROCMAP_QUERY ioctl if available") Signed-off-by: Jerome Marchand Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/20241218175724.578884-1-jmarchan@redhat.com