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| author | Andrii Nakryiko <andrii@kernel.org> | 2025-10-20 23:36:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-12-07 00:12:12 +0300 |
| commit | 13921f45f7c8d59fe47b6d7c9bccab7cdbb734e6 (patch) | |
| tree | 4a92ea360c855a328ed1116ded4d0f96beb2b18d /tools | |
| parent | 36a3defae04ebd4ef93a45b2c71065f46a47d562 (diff) | |
| download | linux-13921f45f7c8d59fe47b6d7c9bccab7cdbb734e6.tar.xz | |
libbpf: Fix powerpc's stack register definition in bpf_tracing.h
[ Upstream commit 7221b9caf84b3294688228a19273d74ea19a2ee4 ]
retsnoop's build on powerpc (ppc64le) architecture ([0]) failed due to
wrong definition of PT_REGS_SP() macro. Looking at powerpc's
implementation of stack unwinding in perf_callchain_user_64() clearly
shows that stack pointer register is gpr[1].
Fix libbpf's definition of __PT_SP_REG for powerpc to fix all this.
[0] https://kojipkgs.fedoraproject.org/work/tasks/1544/137921544/build.log
Fixes: 138d6153a139 ("samples/bpf: Enable powerpc support")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reviewed-by: Naveen N Rao (AMD) <naveen@kernel.org>
Link: https://lore.kernel.org/r/20251020203643.989467-1-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/bpf/bpf_tracing.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h index 9c1b1689068d..8f87a1765c80 100644 --- a/tools/lib/bpf/bpf_tracing.h +++ b/tools/lib/bpf/bpf_tracing.h @@ -202,7 +202,7 @@ struct pt_regs___arm64 { #define __PT_RET_REG regs[31] #define __PT_FP_REG __unsupported__ #define __PT_RC_REG gpr[3] -#define __PT_SP_REG sp +#define __PT_SP_REG gpr[1] #define __PT_IP_REG nip /* powerpc does not select ARCH_HAS_SYSCALL_WRAPPER. */ #define PT_REGS_SYSCALL_REGS(ctx) ctx |