From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A90AB3491EB; Wed, 3 Dec 2025 16:18:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764778735; cv=none; b=sn87RUp7x7YVv7aYjANROVS4VODWSTxBsb//4ZC0IorQ9ZWrNa0fsEcDZErI3oa3VS4zmKTn5H9RSc6fl4g2+Jo3OiePMPbRm4GyI9qQlfrSLZCiM6N8wmFh4OOCXzQgNtmT09P0ZIQCWjTWUHzylh1fqvokftEGutvsKCofDxc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764778735; c=relaxed/simple; bh=iVAE8MI79OR3xk+upiPWP/JE6FcVsftqPo3DbwT7d3g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EcSOpLAOwyrh8r96pNRx9VSlvJEox57kLpb0/hupRdqRDWEbyAIBN6JRV5FS/jliZhYKTjetmDPaMC65iR8NFxNsApWRUoqfqC0BSwBJm6/HXhF7MQecH5TSpLIyDZFRqgH/mwaz21Q9rPRsL/uuF/WaeyAoLHnYtrCafIaFUOU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=a3fNpAdT; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="a3fNpAdT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3C1BC4CEF5; Wed, 3 Dec 2025 16:18:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1764778735; bh=iVAE8MI79OR3xk+upiPWP/JE6FcVsftqPo3DbwT7d3g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a3fNpAdT1Po5f4ksi01nqgly2DackTFRordcthOlOLQCQLJDmGx97j5KMOGsz+t23 O0gcbyN3n9QGPjceOaVXg9hBf9fC80c2alRXQHN125UTJCNyCFDjJBnsBNBP6Y4otF YtvkYvY2lfTzDvIxWxqOQ/71oz1yQB/DRbhxhez4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Andrii Nakryiko , "Naveen N Rao (AMD)" , Alexei Starovoitov , Sasha Levin Subject: [PATCH 6.1 044/568] libbpf: Fix powerpcs stack register definition in bpf_tracing.h Date: Wed, 3 Dec 2025 16:20:46 +0100 Message-ID: <20251203152442.305261720@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251203152440.645416925@linuxfoundation.org> References: <20251203152440.645416925@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andrii Nakryiko [ 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 Reviewed-by: Naveen N Rao (AMD) Link: https://lore.kernel.org/r/20251020203643.989467-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- tools/lib/bpf/bpf_tracing.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h index 9c1b1689068d1..8f87a1765c80a 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 -- 2.51.0