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 6998114658D for ; Wed, 5 Mar 2025 08:19:10 +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=1741162751; cv=none; b=dZ4rVZa0nUCSSh+d+c6FHEMnZ8sgLGWpN9AybkQ/hovzPG5DPRJQv9nb7fNRTyZD+suoPA3yO8G7mxXnqTahVaUR2iOp4Wz0/odR17j/lgieE/kL3xtn+zOMxH+x9MsA89uoWta6wJ+5+beFOYJIV+i/b0K4CYMr8pxAlH7mkWQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741162751; c=relaxed/simple; bh=2Y1gglN8km+2bBHCcWRgN47mtV5DE9sqwyp7GsXlWbo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CNSoWkggR/RNOGu/vTze9avFhqUvelfA7/xp7Eqt5bBzMgr/6QdurI2r5okvzYZ2m4cVL5NpOxda1mbF4RGf1Tc5eYqGpzxi44235U2ZUSYoW7ixUWqxWAMLe3kkEItdoqC+diLdmPEj8mxa9eGIIqJwL4xU5iAfulGEwNAbrNc= 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=MunnFaJR; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=5ts1ePHH; 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="MunnFaJR"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="5ts1ePHH" Date: Wed, 5 Mar 2025 09:19:07 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1741162748; 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=2Y1gglN8km+2bBHCcWRgN47mtV5DE9sqwyp7GsXlWbo=; b=MunnFaJRvDeimrfh0NOU5DPvghmeUP0j+Ofp2dNsebjfX5+A9jrohIqr2W49Ks7oa6mnOd FyFzCOvWQr3x2dKJ1hrkiDCfKOh/IQzMj80uESAqcxMwoBWoUX/wE5HwBuZJ2BRYr0Ifr1 /pjLXCfK0yMC7dhFLwTLsZojr9K6jmOAjG9QfZYlGwN+W2KOPb1Ya+Vf7EK28BCQc7D3kM HSWvQJzjlItmTtMa+kKd9aXewaQxJ34+6ayeXGQx2yakZ9Nwu0kx7O/6KKzBorOR0gOxs8 ANCD421AIervIQtqLbFIqIz4g2Q3s0oWYUcwJ9zvrAY8HtUKMm1PO9QTn5i2CA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1741162748; 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=2Y1gglN8km+2bBHCcWRgN47mtV5DE9sqwyp7GsXlWbo=; b=5ts1ePHHwsKTvMmMmZZlPjsRZfxMq6sRJvhet63k2PHzd0/1SlRT/YoMFMchpQeYyjXnyL Yt2x+WN9JUEME1Bg== From: Sebastian Andrzej Siewior To: Frederic Weisbecker Cc: Peter Zijlstra , LKML , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , Oleg Nesterov , Yi Lai , syzbot+3c4321e10eea460eb606@syzkaller.appspotmail.com Subject: Re: [PATCH] perf: Fix hang while freeing sigtrap event Message-ID: <20250305081907.xHiR7jy0@linutronix.de> References: <20250304135446.18905-1-frederic@kernel.org> 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-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20250304135446.18905-1-frederic@kernel.org> On 2025-03-04 14:54:46 [+0100], Frederic Weisbecker wrote: > Perf can hang while freeing a sigtrap event if a related deferred > signal hadn't managed to be sent before the file got closed: =E2=80=A6 > Signed-off-by: Frederic Weisbecker Reviewed-by: Sebastian Andrzej Siewior Both of the test cases pass=E2=80=A6 This looks way simpler than the initial attempts, why didn't we go with this initially? Sebastian