On 2024/8/29 21:32, Pu Lehui wrote:

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 (local) [0]

Pu Lehui (2):
   libbpf: Fix accessing first syscall argument on RV64
   selftests/bpf: Skip case involving first arg in bpf_syscall_macro on
     RV64

  tools/lib/bpf/bpf_tracing.h                              | 9 ++++++++-
  .../selftests/bpf/prog_tests/test_bpf_syscall_macro.c    | 2 +-
  tools/testing/selftests/bpf/progs/bpf_syscall_macro.c    | 2 +-
  3 files changed, 10 insertions(+), 3 deletions(-)

There was an error in sending this time. A new one has been sent. Sorry 
for the noise.