Merge branch 'fix-accessing-first-syscall-argument-on-rv64'

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Pu Lehui says:

====================
Fix accessing first syscall argument on RV64

On RV64, as Ilya mentioned before [0], the first syscall parameter should be
accessed through orig_a0 (see arch/riscv64/include/asm/syscall.h),
otherwise it will cause selftests like bpf_syscall_macro, vmlinux,
test_lsm, etc. to fail on RV64.

Link: https://lore.kernel.org/bpf/20220209021745.2215452-1-iii@linux.ibm.com [0]

v3:
- Fix test case error.

v2: https://lore.kernel.org/all/20240831023646.1558629-1-pulehui@huaweicloud.com/
- Access first syscall argument with CO-RE direct read. (Andrii)

v1: https://lore.kernel.org/all/20240829133453.882259-1-pulehui@huaweicloud.com/
====================

Link: https://lore.kernel.org/r/20240831041934.1629216-1-pulehui@huaweicloud.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

...

This commit is contained in:

Andrii Nakryiko 2024-09-04 17:03:52 -07:00

parent eff5b5fffc 9985742233

commit aa01d13eec

3 changed files with 12 additions and 11 deletions

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17

tools/lib/bpf/bpf_tracing.h

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4

tools/testing/selftests/bpf/prog_tests/test_bpf_syscall_macro.c

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2

tools/testing/selftests/bpf/progs/bpf_syscall_macro.c

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