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[ Upstream commit7244eb6693] There is currently an invalid register mapping in the s390 return address register. As the manual[1] states, the return address can be found at r14. In bpf_tracing.h, the s390 registers were named gprs(general purpose registers). This commit fixes the problem by correcting the mistyped mapping. [1]: https://uclibc.org/docs/psABI-s390x.pdf#page=14 Fixes:3cc31d7940("libbpf: Normalize PT_REGS_xxx() macro definitions") Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20221224071527.2292-7-danieltimlee@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org>