From nobody Wed Oct 8 00:42:31 2025 Received: from mail-ed1-f45.google.com (mail-ed1-f45.google.com [209.85.208.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19BB92F2378; Fri, 4 Jul 2025 10:55:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751626547; cv=none; b=Mp232E4gD3JCDI37AlnPxQw8ONGDVKb+nklR5d5XojHnENNQbJ6fs/1Gd6Zy04voJTBhm+d8VFoZYarizgGMEjoLxs9cn0n38KKDkRCs0IqtXPWN/SX35zIFfofCv+47VoeN6i6j9busHVNuONSzbeWzaqhxgUKCTr12Tr4b/2Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751626547; c=relaxed/simple; bh=OfZxMm0wtJ0u/hEKScgSTDyZshlYtHfsHkORSdK9eEY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=WdrbTXZLgQYNPZeA81dbyeQp0g9yU2J2Vfh2I3aCFmi9WKsVXGiSMEALYU0HETeElZL5Yvbj97YimB9ClPiFGcIj0l9vg7NuC0g4lB+DYwaSF9QW6BPQtWX0PbL9Lop9vRxjmK5kP53WeKx6WIZCtdHeaFqD4gvMh5dGpZYOtHY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=debian.org; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.208.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=debian.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-ed1-f45.google.com with SMTP id 4fb4d7f45d1cf-60c3aafae23so4217701a12.1; Fri, 04 Jul 2025 03:55:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751626544; x=1752231344; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zXhjbBQxPc41dmIg6kX1o57348NlT6T9Q+QljyaNGuE=; b=nRa6QHMJQvKeTgkYDF1rVBzgOzx8x41gUIZ7niddJeS3NvU2/xMVSil0eaYilGfaRd 5FYX7rS5keJLNSsRqzQUNZ/9sGEvWvgIm+Gbpmwt5K1BldFaV+fXXAjV+LAAUSXGhPw7 NbrGEjDK2/cIUMtvSgGLiVbXfdPOGvM2fdGJcEClktrSiqAtyIBiF2dz08EtCTY4F4zy bOMsG4Ib5PdvNls6QYPE1zIFJxz9e7EbTKZ4TPR+nG+FMlzfP5F49VFnVEraYQVS6y5V gqwLVil3HaG/ZTu6m1BGMWm/D3tlch2j+WeboxKAfztn9TTy2WF1PlGZ4I6aAz+t+V4A UjiQ== X-Forwarded-Encrypted: i=1; AJvYcCU7DzLcvEyVJJIm53SV4taIzo7GRMHXQw7cikezjA2+3Cj931Vl3pXNA0xYS+YnzwdbLS1UkVL7swj+Dw==@vger.kernel.org, AJvYcCVGYVbEx/1OzaakNmHBN077aa8VuzIjj88TQIbsJAiAnvSpnYbNQ2XV0hKrtmbVVptqajNRh3eEk4qY@vger.kernel.org, AJvYcCWZQfy3DJaqRUJFV8KJDdqDvkFM26zrL2jlfcgEf8/XAkkRWdvvUhYrnWCIO5Z7aIlVdBrigqPKIVIamHmo@vger.kernel.org, AJvYcCWi0acyCmgJqIUcWXYtv0YvUEXEkd6M9hI25bfsE4+Z7w7mFbibkhXFIgiQS5zKEtVBE/TG53RSq6fK@vger.kernel.org X-Gm-Message-State: AOJu0YyfYbNpcngqrX9sYZH3bsEue02kTpRoIbXBiDZkGlsmuTiIYtA3 WRNGlKlKIJvL85aPDBPj5KQUm7pR1Wh7y7GaPwovph3P50lXrz2HNOXU X-Gm-Gg: ASbGncsfNu+DQVMAqFHPesHqAHdwJneh4oRP+xTfOrGs8AlI4UDCzYv+JrrHGDpNOEv ZeZRRHp2adGlRbsGc2Mvmhj8QRAfZs1Nin7buLcCh4fVjkfMWfpC6vu65TeKUU1e8JoisEUTjzs E1Rcnf1NpRb8RFIYo6qc2PPgGaprKBK9MVw8zzhANW8jhpJHQ3nomELvI1ehCZ5719fuxlxTvD3 0Lah0zB4+OuBrX1Pfxgzr4c6GglSVfX7+imPZ6rBFXg6ABe8gV/2fW88GBGpjctNQ4vgoAWX6T+ TWsW+WiAn35JYWeVjdpZq5GEtz4GJl1wjYnEVRXgc3ANq476mLYx X-Google-Smtp-Source: AGHT+IFtecnxFxpAEi73VQ7stv/WU5mZI7Q3B3ULoJe26MN/qhHXGZTHEmxxv8nFLd24f8A1QAm6Vw== X-Received: by 2002:a17:906:fd87:b0:ae0:d409:5f19 with SMTP id a640c23a62f3a-ae3f8021712mr265754066b.2.1751626544193; Fri, 04 Jul 2025 03:55:44 -0700 (PDT) Received: from localhost ([2a03:2880:30ff:5::]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ae3f6ac373fsm152691866b.79.2025.07.04.03.55.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Jul 2025 03:55:43 -0700 (PDT) From: Breno Leitao Date: Fri, 04 Jul 2025 03:55:20 -0700 Subject: [PATCH 2/2] acpi/ghes: taint kernel on recovered hardware errors Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250704-taint_recovered-v1-2-7a817f2d228e@debian.org> References: <20250704-taint_recovered-v1-0-7a817f2d228e@debian.org> In-Reply-To: <20250704-taint_recovered-v1-0-7a817f2d228e@debian.org> To: Len Brown , James Morse , Jonathan Corbet , tony.luck@intel.com, rafael@kernel.org Cc: Alexei Starovoitov , kbusch@kernel.org, rmikey@meta.com, kuba@kernel.org, ast@kernel.org, linux-edac@vger.kernel.org, mchehab@kernel.org, bp@alien8.de, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kernel-team@meta.com, Breno Leitao X-Mailer: b4 0.15-dev-dd21f X-Developer-Signature: v=1; a=openpgp-sha256; l=1398; i=leitao@debian.org; h=from:subject:message-id; bh=OfZxMm0wtJ0u/hEKScgSTDyZshlYtHfsHkORSdK9eEY=; b=owEBbQKS/ZANAwAIATWjk5/8eHdtAcsmYgBoZ7MrtRmjW3TJIxqrt1/Zwjaj0nvtpE8DseDjZ c65ogrhs2yJAjMEAAEIAB0WIQSshTmm6PRnAspKQ5s1o5Of/Hh3bQUCaGezKwAKCRA1o5Of/Hh3 benCD/98A+Zy6cEraPLcV/ZuVANE8SzjYuc2VCeS+ELaHyfugQzeQ580nf2Yo7PYEoE9UpaFLg4 zsLbmgdazNLnFatAapInAOckQ4L4tozwKnyWFvZedlCst+HNV2bxXNPskiArA0svc6j2z1rhlhP k0ytX1N7IYK17QY8cdNJz/Wf/ppGsVm57cJdV9I8RFOfhhz9MD4d7zl4Gxsmlyyb+o9y8MUqwh+ qvlBpBDrxk7106JgZw4CrKK2n1Fo2IxOsMLqlz1Y2ugWCL26GKxinkgJXv+ExI14Fu494Z6vJGc VnNF4ESpY1rgpJuguAGF+mP69cTVk14dYv4xsIum5R1AdTXmmkH6nCMSr920UAOS0vxVBQwzoTj I51KEXsl4djmGg+5SWHhQDSfdnV8VYHBY1GjP/tW5DkV8wl6qHTAMFhPHJvUcK2f6ec9yONImmG w5Rw2jrmbFZc9YmhWCafYBqiVAUIYPTVRx4wHjk3SwMv0MmBkk3E43N024oaqD3RuMFXAdWqJAP WyV1zMXsdmhWIMngqvwxhFuxnHUPKzg/D/JUlo53m2AuMuVod6R513rLl/Naai/ShErRnepNvhm U90GiYgI4N8U3eLXLG3RqRSMrIxdZEBx2ikbNM2iak/YmP42EInvlIB/nNU8y0WY+LIlKxA07lo s/uVeBkBiAw8Sug== X-Developer-Key: i=leitao@debian.org; a=openpgp; fpr=AC8539A6E8F46702CA4A439B35A3939FFC78776D Update the GHES error processing logic to taint the kernel when a recoverable or corrected hardware error is detected. If the error severity is GHES_SEV_RECOVERABLE or GHES_SEV_CORRECTED, the TAINT_HW_ERROR_RECOVERED flag is set. This allows users and support tools to identify systems that have experienced hardware issues that were recovered at runtime, improving traceability and diagnostics. Signed-off-by: Breno Leitao --- drivers/acpi/apei/ghes.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 3d44f926afe8e..f323cefe234b9 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -1102,13 +1102,16 @@ static int ghes_proc(struct ghes *ghes) { struct acpi_hest_generic_status *estatus =3D ghes->estatus; u64 buf_paddr; - int rc; + int rc, sev; =20 rc =3D ghes_read_estatus(ghes, estatus, &buf_paddr, FIX_APEI_GHES_IRQ); if (rc) goto out; =20 - if (ghes_severity(estatus->error_severity) >=3D GHES_SEV_PANIC) + sev =3D ghes_severity(estatus->error_severity); + if (sev =3D=3D GHES_SEV_RECOVERABLE || sev =3D=3D GHES_SEV_CORRECTED) + add_taint(TAINT_HW_ERROR_RECOVERED, LOCKDEP_STILL_OK); + else if (sev >=3D GHES_SEV_PANIC) __ghes_panic(ghes, estatus, buf_paddr, FIX_APEI_GHES_IRQ); =20 if (!ghes_estatus_cached(estatus)) { --=20 2.47.1