kernel/tools/testing/selftests/bpf/prog_tests/stream.c, branch linux-rolling-stableHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-rolling-stable2025-09-11T20:00:44Zselftests/bpf: Add tests for arena fault reporting2025-09-11T20:00:44ZPuranjay Mohanpuranjay@kernel.org2025-09-11T14:58:05Zurn:sha1:86f2225065be5af2935f374f1a3abebc052c0868
Add selftests for testing the reporting of arena page faults through BPF
streams. Two new bpf programs are added that read and write to an
unmapped arena address and the fault reporting is verified in the
userspace through streams.
The added bpf programs need to access the user_vm_start in struct
bpf_arena, this is done by casting &arena to struct bpf_arena *, but
barrier_var() is used on this ptr before accessing ptr->user_vm_start;
to stop GCC from issuing an out-of-bound access due to the cast from
smaller map struct to larger "struct bpf_arena"
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20250911145808.58042-7-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
selftests: bpf: use __stderr in stream error tests2025-09-11T20:00:44ZPuranjay Mohanpuranjay@kernel.org2025-09-11T14:58:04Zurn:sha1:edd03fcd7601ce41068c183875c2cd3471a49f9a
Start using __stderr directly in the bpf programs to test the reporting
of may_goto timeout detection and spin_lock dead lock detection.
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20250911145808.58042-6-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
selftests/bpf: Enable timed may_goto tests for arm642025-08-28T00:16:22ZPuranjay Mohanpuranjay@kernel.org2025-08-27T11:32:44Zurn:sha1:22b22bf9ee48580f18bc75bd7a53d010e5b8f598
As arm64 JIT now supports timed may_goto instruction, make sure all
relevant tests run on this architecture. Some tests were enabled and
other required modifications to work properly on arm64.
$ ./test_progs -a "stream*","*may_goto*",verifier_bpf_fastcall
#404 stream_errors:OK
[...]
#406/2 stream_success/stream_cond_break:OK
[...]
#494/23 verifier_bpf_fastcall/may_goto_interaction_x86_64:SKIP
#494/24 verifier_bpf_fastcall/may_goto_interaction_arm64:OK
[...]
#539/1 verifier_may_goto_1/may_goto 0:OK
#539/2 verifier_may_goto_1/batch 2 of may_goto 0:OK
#539/3 verifier_may_goto_1/may_goto batch with offsets 2/1/0:OK
#539/4 verifier_may_goto_1/may_goto batch with offsets 2/0:OK
#539 verifier_may_goto_1:OK
#540/1 verifier_may_goto_2/C code with may_goto 0:OK
#540 verifier_may_goto_2:OK
Summary: 7/16 PASSED, 25 SKIPPED, 0 FAILED
Signed-off-by: Puranjay Mohan <puranjay@kernel.org>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20250827113245.52629-3-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
selftests/bpf: Enable timed may_goto verifier tests on s390x2025-08-26T23:51:52ZIlya Leoshkevichiii@linux.ibm.com2025-08-21T11:25:58Zurn:sha1:7197dbcba230c8a869e7f5bd250b8b7c9b3c0fa8
Now that the timed may_goto implementation is available on s390x,
enable the respective verifier tests.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/r/20250821113339.292434-5-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
selftests/bpf: Add tests for prog streams2025-07-04T02:30:07ZKumar Kartikeya Dwivedimemxor@gmail.com2025-07-03T20:48:18Zurn:sha1:5697683e133d05e6333ee1f12a7e8dd402593258
Add selftests to stress test the various facets of the stream API,
memory allocation pattern, and ensuring dumping support is tested and
functional.
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250703204818.925464-13-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>