From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793387889; b=2Q9z9f5HuQ2DygrP5hQn95Wy1NNRlVkFQulPcFjXvPMAF5qsAMh8pIeZwlbsbshGJkzk FSQGemZ4TB8vaY4VN9pFkJsuGHo9aGmjMid+/56qS6yqd0gb1XZW4eNEkiHoJWFqwlZQJ tYlyQ3dxPBCas3/xdkWM32DJUasKgde9h9otXJDgMoAkODUjw7oquON1+ltvsifa2TT3x tcecm4719h+9dPJ3RXCClYbX5uL4G6TH2bJfY7ePiSIrDz8MWp04gJbiElZUd+XFdgxkY 3D51ytdUn4qL58GNnYf4OAowiIbwBFKMfbhoOT7rPkUS2O7odqvrs9hzFqz0gQpKDPw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793387889; h=Received:DKIM-Signature:From:To:Cc:Subject:In-Reply-To:References: Date:Message-ID:MIME-Version:Content-Type; bh=Hnwtda3En570VuasR3roITDcWTvWNxziHoO86mrJNZk=; b=1wKE9f4xONVhMOxRYPy0vz505+betPKi4vjhAVQ5mGB6vffDBwyvgkzVU/KvoMHzK/D+ z5JFLSBelfNR6C9aSRglS/jZfugwEYpTKGt+ZBhzqUpPKYamNbQTbwh8BrvGlnY26oaJx WKcu9lqkSnXgfnHKfCVFFEnXLEMmIxCGPJee8cxLD/DMkqUOdP0IWAT/oZrv1dXJa4plT nt5Ybbc/b2lS/zSRt66+Q0G7sIsZxoxCV3c81tiecK/meyuwm+GTFMCkaMwtB56RN7bx7 z65RMq31SSzWQN5JxvoEQ/f/iDJG0riujHlPV0ohBTlUPiFKDHJ+QrPkS1BbPsIhIRQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="iDTu/fAc"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E335B606A31A; Fri, 30 Oct 2026 19:18:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=iDTu/fAc Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF6FA1F000C1; Fri, 30 Oct 2026 19:18:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793387888; bh=Hnwtda3En570VuasR3roITDcWTvWNxziHoO86mrJNZk=; h=From:To:Cc:Subject:In-Reply-To:References:Date; b=iDTu/fAcHw5n8fVLwbZmglmsz+gb8Ao35sMFCH2hd4d6kXqUvg7vFR066gj92zXuN 1MGlG0kW/qA00fU2ztU9Q0TUBGoPt9gGgYEv+sSS+x8i38RLL78ptYYiBcbrUzbD/D hv/r6tYJTsH4mofkq0IcuzcB+ldoAFhN7TWJU9L/VnupKTmdx868JFdoHnzipFHQpl QrkkygVqklR8Xh4t5W2qY7i4+wF5vXMV6NguHFWQgMZKi7f8w0hbGeax4TDSoLvLmB a2vHGGBIL1pPl24NiAPnDfLOI0kA4lU2mj+oYG1zCmsYkxVWrtRdVoR3osJ6VBJ1L+ udTkJhy+MkBhA== From: Thomas Gleixner To: Yazen Ghannam Cc: Borislav Petkov , syzbot , linux-kernel@vger.kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, Tony Luck , linux-edac@vger.kernel.org Subject: Re: [PATCH V2] x86/mce: Serialize sysfs controls against CPU hotplug In-Reply-To: <20261029165636.GA5110@yaz-khff2.amd.com> References: <6a7ec39f.5b0d2c79.2ef4ef.0002.GAE@google.com> <87ik58la9w.ffs@fw13> <20260817235553.GAaoOfieqJBZTsAn3N@fat_crate.local> <20260818001840.GBaoOk4Mz_mmZYK2rK@fat_crate.local> <878q63lrqr.ffs@fw13> <874iec22sf.ffs@fw13> <87y0bhy5h8.ffs@fw13> <20261029165636.GA5110@yaz-khff2.amd.com> Date: Fri, 30 Oct 2026 20:18:04 +0100 Message-ID: <87jymzxaj7.ffs@fw13> X-Mailing-List: linux-edac@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain On Thu, Oct 29 2026 at 12:56, Yazen Ghannam wrote: > On Wed, Oct 28, 2026 at 08:45:07PM +0100, Thomas Gleixner wrote: > These were able to hit the new Sashiko findings. > > There are two separate ones. > 1) Another deadlock. > 2) PREEMPT_RT warning. Grrr. > The diff below fixes both. Though I'm not sure the if the msleep() is > okay. Not really. I think I know how to fix it for real now that I understood the nasty interaction with kernfs, but I won't come around to look into it before Monday.