From nobody Sun Oct 5 20:15:22 2025 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (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 4786A13C8EA for ; Wed, 30 Jul 2025 03:06:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753844820; cv=none; b=bNsbyuo8mFZIzkC/wj8V7ZXYTt2kw5UJIsCGoFa2koWRLh9A5meLyJtBW+6Y62D2j+AZWUmEf65VYDTRt/222jHyD/skm0IujhQtJimoK7KHsWv+lMMDd+u1nbxI2+EC7x7pf/BLk74C2AQ7Q2Ubg+qG382YgP89n5Gf4l6ZrlU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753844820; c=relaxed/simple; bh=chDKZtyQp0dUcQD+TRZi77cal4E4MJ/s/K/kQyL44JA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=CAkWqwZ7oAT+yuSyATTISWX6AjTPLCbaOQo2fVIC6c429qhGYc0N3wC0QAhCsWR1CzoRcSZsSPCHSuPiFMJMUxLTv5hoFZLmOBfje24MCtbdHJ6RBr3wCJF3ts6WsdIt6/Mmmqywm4AitiRMRbTDUWJ2xSwYW8R5qCxFY9BywIs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=crxv144I; arc=none smtp.client-ip=209.85.214.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="crxv144I" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-23dc5bcf49eso87051585ad.2 for ; Tue, 29 Jul 2025 20:06:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1753844817; x=1754449617; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=/8wUtH74SdiggAwWn19JDZxA61lgUtCCkwbJ7bEtQLs=; b=crxv144IGOIUmVl7maZGzhZfZ7ZihYiUllMcPzBWQdKkna4AkZ5e0NSYq0V4Xg7SV9 ZrjUpBYTe6oGSlYydcV4I0sIsA1jZ5hQLREHuNYfSZAy5v6L9k0MmbLWZYSfADoVswrn IvdeUGmnjCRQKNvbHKLuVxt2ZfdaOkDD5rzTDQW+RiuT1XLK7rpU0CLRin+Jg/tnPW0C Z9njM5i5CdBjpv+Bgi/bbztBzdEEPeI33xaWFwgGEA3CkNjhU3gvzU7ddvtjLO3NepLc TpRXceOBYVvW3YnSasSrmMMcm2vD+i2CPasqXOzprXOQex1bzLJq8DJlNhDXbyULvPon A45g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1753844817; x=1754449617; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=/8wUtH74SdiggAwWn19JDZxA61lgUtCCkwbJ7bEtQLs=; b=OMAc3dmOfeRQ2Rh9Ud2FXOO6X2+Be4UoJENcg+SjLP+nM7cnyqZTLFApBDXmKejpcY bFqcJouGHJoG+VHlYNdSP5IMprknJJKdWc6Jb6q2EIu/UMP3fYcp6BCaIRok4YL8Scww vJsVHxb7rk+9MnROm3gEys8IAOy/hhFKqmYyQnXkwOAryClzXnbN9PAoMMjTJmJl3G/a ezbOb75+YsxTyNYnFLz2OOO2zJmJkME62HXI36BZIzJqQKDwDFovSlRogMamuO1SIQgy XH1B5G49/+o4PilKmehtU8bmSeTj0nZWIq2W4Ej5mbBr87bjgrrSGcuN9cBa+9z2HlyW YdeA== X-Gm-Message-State: AOJu0YyGjtmMj3rlKJJJve81zuAzl5OBd6ftGkARc2tUfodJYi4/2gmL CNNyw7f7GBlizWZOsC7BDKnbq6OqNM4ofq01dJZ5uJPO45mxEqqGPwGh X-Gm-Gg: ASbGncvvitfH1sIE42u8uSsh0D7/WDKqQKdGiybVcW05LGHp+cBO6yqIuC8qQ6UkbFc tlwLz29VCZ/UIA2C9wclSHXiuLIVXFBbaTcZZaNyhM7/93eSCWVb5+3GS6gvcTMuDMgbC+GKszt N+A93MZMLeIo97ViQMMsKLz+E0DwUu1itL9WglKAMmMuxht3AYd4sIx7o0iOaJ8WnNhPAg4Toz2 Wl5krlARRgeeYTGsJFxSt3O9iFmhN6F32Jxm3sYWY4FBSdAO07PCYWjG5Sp5TpNqJ5s/rX+cwG/ Cbhn2w6Tiip9kn3YCNzeGIeOaIhWR+EY+l6Ebe3texdLYWuPGk2yAuNRN0mOSnzz1e3MW2pMGN/ pIgDHrdJ+sFyfdeCyvVjtWh9Lxju99OHJ4A== X-Google-Smtp-Source: AGHT+IH1guDyoZ1HseCMplpcCL8qj2IsIapBb0UW0NFlcli1/Ck2HPYo9Eo2f+RmRvj7CVW95cQqpQ== X-Received: by 2002:a17:903:18b:b0:240:11ba:3842 with SMTP id d9443c01a7336-24096b08dd9mr29378415ad.35.1753844817423; Tue, 29 Jul 2025 20:06:57 -0700 (PDT) Received: from localhost.localdomain ([2403:2c80:17::10:40f3]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-24067035e9esm31625105ad.102.2025.07.29.20.06.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Jul 2025 20:06:56 -0700 (PDT) From: Wang Jinchao To: Petr Mladek , John Ogness , Thomas Gleixner , Joel Granados , Dave Jiang , Josh Poimboeuf , Sravan Kumar Gundu , Ryo Takakura Cc: linux-kernel@vger.kernel.org, Wang Jinchao , Wei Liu , Jason Gunthorpe Subject: [PATCH] panic: call hardlockup_detector_perf_stop in panic Date: Wed, 30 Jul 2025 11:06:33 +0800 Message-ID: <20250730030638.65355-1-wangjinchao600@gmail.com> X-Mailer: git-send-email 2.43.0 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" When a panic happens, it blocks the cpu, which may trigger the hardlockup detector if some dump is slow. So call hardlockup_detector_perf_stop() to disable hardlockup dector. Signed-off-by: Wang Jinchao --- kernel/panic.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/panic.c b/kernel/panic.c index b0b9a8bf4560..52a1ac4ad447 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -339,6 +339,7 @@ void panic(const char *fmt, ...) */ local_irq_disable(); preempt_disable_notrace(); + hardlockup_detector_perf_stop(); =20 /* * It's possible to come here directly from a panic-assertion and --=20 2.43.0