Changes in DENYLIST.aarch64

ac13c508 - selftests/bpf: Enable kprobe_multi tests for ARM64

Wed, 19 Feb 2025 19:41:39 +0000

selftests/bpf: Enable kprobe_multi tests for ARM64The kprobe_multi feature was disabled on ARM64 due to the lack of fprobesupport.The fprobe rewrite on function_graph has been recently merged and thusbrought support for fprobes on arm64. This then enables kprobe_multisupport on arm64, and so the corresponding tests can now be run on thisarchitecture.Remove the tests depending on kprobe_multi from DENYLIST.aarch64 toallow those to run in CI. CONFIG_FPROBE is already correctly set intools/testing/selftests/bpf/configSigned-off-by: Alexis Lothoré (eBPF Foundation) Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20250219-enable_kprobe_multi_tests-v1-1-faeec99240c8@bootlin.com List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

e1ef78dc - selftests/bpf: fexit_sleep: Fix stack allocation for arm64

Mon, 15 Jul 2024 17:33:27 +0000

selftests/bpf: fexit_sleep: Fix stack allocation for arm64On ARM64 the stack pointer should be aligned at a 16 byte boundary orthe SPAlignmentFault can occur. The fexit_sleep selftest allocates thestack for the child process as a character array, this is not guaranteedto be aligned at 16 bytes.Because of the SPAlignmentFault, the child process is killed before itcan do the nanosleep call and hence fentry_cnt remains as 0. This causesthe main thread to hang on the following line:while (READ_ONCE(fexit_skel->bss->fentry_cnt) != 2);Fix this by allocating the stack using mmap() as described in theexample in the man page of clone().Remove the fexit_sleep test from the DENYLIST of arm64.Fixes: eddbe8e65214 ("selftest/bpf: Add a test to check trampoline freeing logic.")Signed-off-by: Puranjay Mohan Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20240715173327.8657-1-puranjay@kernel.org List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

517125f6 - selftests/bpf: DENYLIST.aarch64: Skip fexit_sleep again

Fri, 12 Jul 2024 16:12:30 +0000

selftests/bpf: DENYLIST.aarch64: Skip fexit_sleep againRevert commit 90dc946059b7 ("selftests/bpf: DENYLIST.aarch64: Removefexit_sleep") again. The fix in 19d3c179a377 ("bpf, arm64: Fix trampolinefor BPF_TRAMP_F_CALL_ORIG") does not address all of the issues and BPFCI is still hanging and timing out: https://github.com/kernel-patches/bpf/actions/runs/9905842936/job/27366435436 [...] #89/11 fexit_bpf2bpf/func_replace_global_func:OK #89/12 fexit_bpf2bpf/fentry_to_cgroup_bpf:OK #89/13 fexit_bpf2bpf/func_replace_progmap:OK #89 fexit_bpf2bpf:OK Error: The operation was canceled.Thus more investigation work & fixing is needed before the test can be putin place again.Signed-off-by: Daniel Borkmann Cc: Puranjay Mohan Link: https://lore.kernel.org/bpf/20240705145009.32340-1-puranjay@kernel.org List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

90dc9460 - selftests/bpf: DENYLIST.aarch64: Remove fexit_sleep

Fri, 05 Jul 2024 14:50:09 +0000

selftests/bpf: DENYLIST.aarch64: Remove fexit_sleepfexit_sleep test runs successfully now on the BPF CI so remove itfrom the deny list. ftrace direct calls was blocking tracing programson arm64 but it has been resolved by now. For more details see alsodiscussion in [*].Signed-off-by: Puranjay Mohan Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20240705145009.32340-1-puranjay@kernel.org [*] List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

9474f72c - selftests/bpf: Add testcase where 7th argment is struct

Tue, 02 Jul 2024 12:19:44 +0000

selftests/bpf: Add testcase where 7th argment is structAdd testcase where 7th argument is struct for architectures with 8 argumentregisters, and increase the complexity of the struct.Signed-off-by: Pu Lehui Signed-off-by: Daniel Borkmann Reviewed-by: Björn Töpel Acked-by: Björn Töpel Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20240702121944.1091530-4-pulehui@huaweicloud.com List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

e612b5c1 - bpf, arm64: Add support for lse atomics in bpf_arena

Fri, 26 Apr 2024 16:11:16 +0000

bpf, arm64: Add support for lse atomics in bpf_arenaWhen LSE atomics are available, BPF atomic instructions are implementedas single ARM64 atomic instructions, therefore it is easy to enablethese in bpf_arena using the currently available exception handlingsetup.LL_SC atomics use loops and therefore would need more work to enable inbpf_arena.Enable LSE atomics based instructions in bpf_arena and use thebpf_jit_supports_insn() callback to reject atomics in bpf_arena if LSEatomics are not available.All atomics and arena_atomics selftests are passing: [root@ip-172-31-2-216 bpf]# ./test_progs -a atomics,arena_atomics #3/1 arena_atomics/add:OK #3/2 arena_atomics/sub:OK #3/3 arena_atomics/and:OK #3/4 arena_atomics/or:OK #3/5 arena_atomics/xor:OK #3/6 arena_atomics/cmpxchg:OK #3/7 arena_atomics/xchg:OK #3 arena_atomics:OK #10/1 atomics/add:OK #10/2 atomics/sub:OK #10/3 atomics/and:OK #10/4 atomics/or:OK #10/5 atomics/xor:OK #10/6 atomics/cmpxchg:OK #10/7 atomics/xchg:OK #10 atomics:OK Summary: 2/14 PASSED, 0 SKIPPED, 0 FAILEDSigned-off-by: Puranjay Mohan Link: https://lore.kernel.org/r/20240426161116.441-1-puranjay@kernel.orgSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

d0a2ba19 - selftests/bpf: Add tests for atomics in bpf_arena.

Fri, 05 Apr 2024 23:11:34 +0000

selftests/bpf: Add tests for atomics in bpf_arena.Add selftests for atomic instructions in bpf_arena.Signed-off-by: Alexei Starovoitov Acked-by: Eduard Zingerman Link: https://lore.kernel.org/r/20240405231134.17274-2-alexei.starovoitov@gmail.comSigned-off-by: Martin KaFai Lau List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

4dd31243 - bpf: Add arm64 JIT support for bpf_addr_space_cast instruction.

Mon, 25 Mar 2024 15:07:16 +0000

bpf: Add arm64 JIT support for bpf_addr_space_cast instruction.LLVM generates bpf_addr_space_cast instruction while translatingpointers between native (zero) address space and__attribute__((address_space(N))). The addr_space=0 is reserved asbpf_arena address space.rY = addr_space_cast(rX, 0, 1) is processed by the verifier andconverted to normal 32-bit move: wX = wY.rY = addr_space_cast(rX, 1, 0) : used to convert a bpf arena pointer toa pointer in the userspace vma. This has to be converted by the JIT.Signed-off-by: Puranjay Mohan Link: https://lore.kernel.org/r/20240325150716.4387-3-puranjay12@gmail.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

8df839ae - selftests/bpf: Add bpf_arena_htab test.

Fri, 08 Mar 2024 01:08:12 +0000

selftests/bpf: Add bpf_arena_htab test.bpf_arena_htab.h - hash table implemented as bpf programSigned-off-by: Alexei Starovoitov Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240308010812.89848-15-alexei.starovoitov@gmail.com List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

80a4129f - selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages

Fri, 08 Mar 2024 01:08:10 +0000

selftests/bpf: Add unit tests for bpf_arena_alloc/free_pagesAdd unit tests for bpf_arena_alloc/free_pages() functionalityand bpf_arena_common.h with a set of common helpers and macros thatis used in this test and the following patches.Also modify test_loader that didn't support running bpf_prog_type_syscallprograms.Signed-off-by: Alexei Starovoitov Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20240308010812.89848-13-alexei.starovoitov@gmail.com List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

22fc0e80 - bpf, arm64: support exceptions

Thu, 01 Feb 2024 12:52:25 +0000

bpf, arm64: support exceptionsThe prologue generation code has been modified to make the callbackprogram use the stack of the program marked as exception boundary wherecallee-saved registers are already pushed.As the bpf_throw function never returns, if it clobbers any callee-savedregisters, they would remain clobbered. So, the prologue of theexception-boundary program is modified to push R23 and R24 as well,which the callback will then recover in its epilogue.The Procedure Call Standard for the Arm 64-bit Architecture[1] statesthat registers r19 to r28 should be saved by the callee. BPF programs onARM64 already save all callee-saved registers except r23 and r24. Thispatch adds an instruction in prologue of the program to save thesetwo registers and another instruction in the epilogue to recover them.These extra instructions are only added if bpf_throw() is used. Otherwisethe emitted prologue/epilogue remains unchanged.[1] https://github.com/ARM-software/abi-aa/blob/main/aapcs64/aapcs64.rstSigned-off-by: Puranjay Mohan Link: https://lore.kernel.org/r/20240201125225.72796-3-puranjay12@gmail.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

59e83c01 - selftests/bpf: Add test for recursion counts of perf event link kprobe

Wed, 20 Sep 2023 21:31:44 +0000

selftests/bpf: Add test for recursion counts of perf event link kprobeAdding selftest that puts kprobe.multi on bpf_fentry_test1 thatcalls bpf_kfunc_common_test kfunc which has 3 perf event kprobesand 1 kprobe.multi attached.Because fprobe (kprobe.multi attach layear) does not have strictrecursion check the kprobe's bpf_prog_active check is hit for test2-5.Disabling this test for arm64, because there's no fprobe support yet.Signed-off-by: Jiri Olsa Signed-off-by: Andrii Nakryiko Tested-by: Song Liu Reviewed-by: Song Liu Acked-by: Hou Tao Link: https://lore.kernel.org/bpf/20230920213145.1941596-9-jolsa@kernel.org List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

d2a93715 - selftests/bpf: Add tests for BPF exceptions

Tue, 12 Sep 2023 23:32:14 +0000

selftests/bpf: Add tests for BPF exceptionsAdd selftests to cover success and failure cases of API usage, runtimebehavior and invariants that need to be maintained for implementationcorrectness.Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20230912233214.1518551-18-memxor@gmail.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

8a19edd4 - selftests/bpf: Fix kprobe_multi_test/attach_override test

Wed, 13 Sep 2023 11:47:11 +0000

selftests/bpf: Fix kprobe_multi_test/attach_override testWe need to deny the attach_override test for arm64, denying thewhole kprobe_multi_test suite. Also making attach_override static.Fixes: 7182e56411b9 ("selftests/bpf: Add kprobe_multi override test")Signed-off-by: Jiri Olsa Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20230913114711.499829-1-jolsa@kernel.org List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

23cf7aa5 - selftests/bpf: Add selftest for fill_link_info

Sun, 13 Aug 2023 14:19:00 +0000

selftests/bpf: Add selftest for fill_link_infoAdd selftest for the fill_link_info of uprobe, kprobe and tracepoint.The result: $ tools/testing/selftests/bpf/test_progs --name=fill_link_info #79/1 fill_link_info/kprobe_link_info:OK #79/2 fill_link_info/kretprobe_link_info:OK #79/3 fill_link_info/kprobe_invalid_ubuff:OK #79/4 fill_link_info/tracepoint_link_info:OK #79/5 fill_link_info/uprobe_link_info:OK #79/6 fill_link_info/uretprobe_link_info:OK #79/7 fill_link_info/kprobe_multi_link_info:OK #79/8 fill_link_info/kretprobe_multi_link_info:OK #79/9 fill_link_info/kprobe_multi_invalid_ubuff:OK #79 fill_link_info:OK Summary: 1/9 PASSED, 0 SKIPPED, 0 FAILEDThe test case for kprobe_multi won't be run on aarch64, as it is notsupported.Signed-off-by: Yafang Shao Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Acked-by: Jiri Olsa Link: https://lore.kernel.org/bpf/20230813141900.1268-3-laoar.shao@gmail.com List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

5e9cf77d - selftests/bpf: add testcase for TRACING with 6+ arguments

Thu, 13 Jul 2023 04:07:38 +0000

selftests/bpf: add testcase for TRACING with 6+ argumentsAdd fentry_many_args.c and fexit_many_args.c to test the fentry/fexitwith 7/11 arguments. As this feature is not supported by arm64 yet, wedisable these testcases for arm64 in DENYLIST.aarch64. We can combinethem with fentry_test.c/fexit_test.c when arm64 is supported too.Correspondingly, add bpf_testmod_fentry_test7() andbpf_testmod_fentry_test11() to bpf_testmod.cMeanwhile, add bpf_modify_return_test2() to test_run.c to test theMODIFY_RETURN with 7 arguments.Add bpf_testmod_test_struct_arg_7/bpf_testmod_test_struct_arg_7 inbpf_testmod.c to test the struct in the arguments.And the testcases passed on x86_64:./test_progs -t fexitSummary: 5/14 PASSED, 0 SKIPPED, 0 FAILED./test_progs -t fentrySummary: 3/2 PASSED, 0 SKIPPED, 0 FAILED./test_progs -t modify_returnSummary: 1/0 PASSED, 0 SKIPPED, 0 FAILED./test_progs -t tracing_structSummary: 1/0 PASSED, 0 SKIPPED, 0 FAILEDSigned-off-by: Menglong Dong Acked-by: Yonghong Song Link: https://lore.kernel.org/r/20230713040738.1789742-4-imagedong@tencent.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

90564f1e - bpf, arm64: Support struct arguments in the BPF trampoline

Thu, 11 May 2023 14:05:07 +0000

bpf, arm64: Support struct arguments in the BPF trampolineThis extends the BPF trampoline JIT to support attachment to functionsthat take small structures (up to 128bit) as argument. This is triviallyachieved by saving/restoring a number of "argument registers" ratherthan a number of arguments.The AAPCS64 section 6.8.2 describes the parameter passing ABI."Composite types" (like C structs) below 16 bytes (as enforced by theBPF verifier) are provided as part of the 8 argument registers asexplained in the section C.12.Signed-off-by: Florent Revest Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Acked-by: Xu Kuohai Link: https://lore.kernel.org/bpf/20230511140507.514888-1-revest@chromium.org List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

31f4f810 - selftests/bpf: Add fexit_sleep to DENYLIST.aarch64

Fri, 28 Apr 2023 03:37:44 +0000

selftests/bpf: Add fexit_sleep to DENYLIST.aarch64It is reported that the fexit_sleep never returns in aarch64.The remaining tests cannot start. Put this test into DENYLIST.aarch64for now so that other tests can continue to run in the CI.Acked-by: Manu Bretelle Reported-by: Manu Bretelle Signed-off-by: Martin KaFai Lau List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

a4644119 - selftests/bpf: Update the aarch64 tests deny list

Thu, 27 Apr 2023 14:32:07 +0000

selftests/bpf: Update the aarch64 tests deny listNow that ftrace supports direct call on arm64, BPF tracing programs workon that architecture. This fixes the vast majority of BPF selftestsexcept for:- multi_kprobe programs which require fprobe, not available on arm64 yet- tracing_struct which requires trampoline support to access struct argsThis patch updates the list of BPF selftests which are known to fail sothe BPF CI can validate the tests which pass now.Signed-off-by: Florent Revest Signed-off-by: Daniel Borkmann Acked-by: Stanislav Fomichev Link: https://lore.kernel.org/bpf/20230427143207.635263-1-revest@chromium.org List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64

aa3d65de - bpf/selftests: Test fentry attachment to shadowed functions

Fri, 10 Mar 2023 07:41:00 +0000

bpf/selftests: Test fentry attachment to shadowed functionsAdds a new test that tries to attach a program to fentry of twofunctions of the same name, one located in vmlinux and the other inbpf_testmod.To avoid conflicts with existing tests, a new function"bpf_fentry_shadow_test" was created both in vmlinux and in bpf_testmod.The previous commit fixed a bug which caused this test to fail. Theverifier would always use the vmlinux function's address as the targettrampoline address, hence trying to create two trampolines for a singleaddress, which is forbidden.The test (similarly to other fentry/fexit tests) is not working on arm64at the moment.Signed-off-by: Viktor Malik Acked-by: Jiri Olsa Link: https://lore.kernel.org/r/5fe2f364190b6f79b085066ed7c5989c5bc475fa.1678432753.git.vmalik@redhat.comSigned-off-by: Alexei Starovoitov List of files: /linux-6.15/tools/testing/selftests/bpf/DENYLIST.aarch64