From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 A857220E6E3; Wed, 4 Jun 2025 11:04:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749035089; cv=none; b=lA78ePho2Id7Z/69eVjpuL+lTUunPygsdSEKwMezxyNRjA0fr/ehLi0u8gUCXv5Fg6rysW7REkZNGUiSQ2+n1YOyhU2xypEJmuZ7f0C0s1qXyXxVsQFezsnH3OAMM6+YDB1RnMy48YoeCaBBhl+aFvPlHIFawZUHnm50ITrtjyk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749035089; c=relaxed/simple; bh=vrFDCiqXDMtRHbVFVsT+31iDGAdDQ3ptGNMH7XKEI9Q=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=fCLLqMyhBIo+g89+7MGIE0oeyFb3bmo6WTcvlERZuaEUwwCzDX367MMAuCAo0L19jT696Z+B9PNU/zAC0Fl1vnp18x0uaeb7wwxjAjsX7We0spP99Hzk9rTVrlmC9F6mmwlFyZVV7gLzWFXmISSXrHkUfl+5v9feLbHjuww7IfQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=tdJExIWU; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=BALc2CPn; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="tdJExIWU"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="BALc2CPn" Date: Wed, 4 Jun 2025 13:04:38 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1749035079; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vrFDCiqXDMtRHbVFVsT+31iDGAdDQ3ptGNMH7XKEI9Q=; b=tdJExIWU24fpA6+s2PVmEwF5OlREnTVG04LlBr5mh1rW3r0KA8BuSnXw2xtJv5AAPx1YGU A3sC9mL/+kbvrqAeREt4EAgIvVdf9q6bzYnmoIeoz3Ez4ovzgC/RencTsBcdiKirHuSmUn uQYmKQjOE912jmRQHAcfSSYGYv1ZYrqSQkTlJaH/bJuYch4yp8aRTeJ12oA7L78WkIn5TT /2ATA7mG2kECBxOIg10rlQtCM0vjNigf+dCQ9m1dgG/FYMTgDi93uaYGkisyfqGzlCEGVk 2E1g+yOxtae8npQ/oWYtUJzPv05T9/DlXtEkI8EsglQAxzbmEny+gkHHtoqqvQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1749035079; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vrFDCiqXDMtRHbVFVsT+31iDGAdDQ3ptGNMH7XKEI9Q=; b=BALc2CPnWzOjlqX0PqN8Lvuavq2pw1hJQ+kR+d7cuTD0L5ptSNoho+3HXS69mZsPEHzjml L/2JsK5jDYvsnFAg== From: Sebastian Andrzej Siewior To: kernel test robot Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Paolo Abeni , Allison Henderson , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, rds-devel@oss.oracle.com Subject: Re: [linus:master] [rds] c50d295c37: BUG:unable_to_handle_page_fault_for_address Message-ID: <20250604110438.rer2bMSx@linutronix.de> References: <202506041623.e45e4f7d-lkp@intel.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <202506041623.e45e4f7d-lkp@intel.com> On 2025-06-04 16:42:37 [+0800], kernel test robot wrote: >=20 > Hello, Hi, > kernel test robot noticed "BUG:unable_to_handle_page_fault_for_address" o= n: >=20 > commit: c50d295c37f2648a8d9e8a572fedaad027d134bb ("rds: Use nested-BH loc= king for rds_page_remainder") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master =E2=80=A6 > the issue does not always happen, 45 times out of 200 runs as below. but = parent > keeps clean. I can reproduce this quite reliably. Looking=E2=80=A6 Sebastian