From nobody Sun Feb 8 18:19:23 2026 Received: from out162-62-58-69.mail.qq.com (out162-62-58-69.mail.qq.com [162.62.58.69]) (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 5891324B256; Sat, 11 Jan 2025 12:21:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.58.69 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736598077; cv=none; b=A4U6LTD5opv0ZG2wyzxtUripUnOhhbPqtX+McUmiYaDjZhd4Y+lg+AcQf4N7N9OmwQ2fy0utd5GqeHTKcmgvzuzXxIRVUChuO78GUwSFlBvtlhsHgpLOE7oJdwlu4dFQu/DradxR9I7ocwMF5zerU382k0aZHBOGIN5N4lAG848= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736598077; c=relaxed/simple; bh=16uvyolSRo286m8yQNvXbhZmHPl2EyM2u2hDRkbNMYw=; h=Message-ID:From:To:Cc:Subject:Date:MIME-Version; b=VCEjWroA7s60M6Kgpqo8a+Jyt5ycv7G1gUVoYd5ZyK5wLmdM8y0oRD+b9dj9yHTeuRUSR5O7pzX+SsK/vCRzoTtwl3aPcC4b2ssGiTgPbWCBR2WZmXCerykmhqCaoVXNy3jDupBOM/zThD1jVdwp1pciYnffhrix3zxug00nDn0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=UIk3sgLB; arc=none smtp.client-ip=162.62.58.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="UIk3sgLB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1736598067; bh=rjIk5IWPX/sFgqupdD4dSWcOuD6lN7+QBI/rBP5fj18=; h=From:To:Cc:Subject:Date; b=UIk3sgLBgDHTzb0ByMHjl7qXH0T2/7HNIMjfAAwGcIwhud+ogX5XjDdYGgbQyKzgD Q5hYMOrVhNKhspKLrI3rkAbUFXCSfJKpFKnwMgwzbK7elsr0wX1dum0kVoW7YJeekJ 0q16l49/66YfjCu8bJ1M9DSAKlCIYFsElxipUlz8= Received: from u22.. ([208.115.96.45]) by newxmesmtplogicsvrszb21-0.qq.com (NewEsmtp) with SMTP id E24AD6B7; Sat, 11 Jan 2025 17:56:36 +0800 X-QQ-mid: xmsmtpt1736589396tszkecd4g Message-ID: X-QQ-XMAILINFO: NmxDRtNfo6mLCtlJ3NUEaLEv/0UxDoISsTe+ak3zBbPJ4DaE9J0Bm5Sg35AlKD xVEZndEBtZP7yjTu40DZ2oUisibTHpHr0mPtReka6BXItsdxGNZaDPulzeNrL14cBuM0eKXSeidU V8NgmPhuJxhPjLNwX2lR3mtbBSSHsVVIGhzsHtkNUYTdXoK9t/ySxGrzHCOcwvyETY221kbeNj9s PgoxUQHGkczthhqIiuQvJT4s/jghKb1WVRBDjkjxVYSZUl+TGONl9nyVbgG7+iTejWy5Q0QN9wBS eMoA405b9zTJLiGBYqi/OUJEjGMuq3xBDXU1PA3e/n4gCBci0qS4qIWL04aWAhioXnMcycw5SgYm nmv74Wa+agBgIDobFq+C+Imunn8z/5m5voXLdZF8oGK/LUkGf+REam0C12PogLO2GwbXO/c9Fuz4 MspoA2dZbRNa8uqQKpuBxEZn5LG2DkSSCebUeby9/UDKHNBogelDYM9Yc82N/CAZR2iM4uZOehw8 euo86vPTdNs9u3Sji123Vc12K+6pWdLx+9snYJbo/u1PV/NFLlb04peJtdBRdzPIKVPVqXIAU/7+ CJ18duhpMjrkR7WebAd0FEjJ4dxNSa/qB01HnJpTk13va4OCsePnOcj3WjVgwedrU6ZqGak640Qi oMpCv2TYow0Pj43EHmHt+79ceuFCKlBUhJCeL7pRJKC9Jv5wdtovwJVVbtQcLZ2e8SCHrs2cOkVE ZUIdGSfaFKYk6HFiYovSMibCfFbPFqXJSAkXAJvj3iXHGDx7j+EzI1zHwflXb4D5aiuVRIPQ9ob3 dD9IrzbKY5rdgDJo/LxB3R18ZesZ2zcjp4sju6xC+nkMWj5ec3r9rURHGPUC1RrBHzh6qhcAe+8j rEGOG1g29it7go1dcemiAuMbWPWyWdV2NpsGsROty6kRCBi9K61+UPhZ3OB9vOW2f4HdD4GtmnL7 ZhHtN/QvYYTy1yXSMEqE8e5HcJfUyIsuLn8DuV3Z4T53JzKgTsLq+/RidJqyyz2ube5dgH3KQH0x mieEzFHVIr4UBgdzvUw7+/JdJiJZsa3sAiNQceyl1CkMoZPGa+1DJm2dtEA0k= X-QQ-XMRINFO: MSVp+SPm3vtS1Vd6Y4Mggwc= From: 1534428646@qq.com To: catalin.marinas@arm.com, will@kernel.org Cc: mark.rutland@arm.com, kristina.martsenko@arm.com, liaochang1@huawei.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, "Yiren.Xie" <1534428646@qq.com> Subject: [PATCH] arm64: kprobe: fix an error in single stepping support Date: Sat, 11 Jan 2025 17:56:32 +0800 X-OQ-MSGID: <20250111095632.738024-1-1534428646@qq.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: "Yiren.Xie" <1534428646@qq.com> It is obvious a conflict between the code and the comment. And verified that with this modification it can read the DAIF status. Signed-off-by: Yiren.Xie <1534428646@qq.com> --- arch/arm64/kernel/probes/decode-insn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/kernel/probes/decode-insn.c b/arch/arm64/kernel/pro= bes/decode-insn.c index 6438bf62e753..22383eb1c22c 100644 --- a/arch/arm64/kernel/probes/decode-insn.c +++ b/arch/arm64/kernel/probes/decode-insn.c @@ -40,7 +40,7 @@ static bool __kprobes aarch64_insn_is_steppable(u32 insn) */ if (aarch64_insn_is_mrs(insn)) return aarch64_insn_extract_system_reg(insn) - !=3D AARCH64_INSN_SPCLREG_DAIF; + =3D=3D AARCH64_INSN_SPCLREG_DAIF; =20 /* * The HINT instruction is steppable only if it is in whitelist --=20 2.34.1