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 D80F023645F for ; Mon, 17 Feb 2025 19:25:43 +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=1739820345; cv=none; b=lgJ04d2PgTlhhWUXrR22RFof2KOT6y5tNAwdtvAsm0yC5Fu31x6t92C3bjpvBkRKfdiOlOdwH1UCLisCWkGHkbN5PND0dwAiigsmTWUAutkB/e5wWSzyWGX+c17Fg/8SQT9sujA/5Kz67nOTpdvayOkBaZtwgBQFtr52lGv1GpQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739820345; c=relaxed/simple; bh=9Bg68HEW86azruEu9jxQkScZgv7ruvEJl4XBC4kp2KY=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=oLIi8oFNSXRYDIhN0u71Q0T/QkykuShBn52dgFW0aD9VpTH5QvLJ/vbUXEjPwwoNSBHyEqomgKtOtXXunR0gAdQSZ8WtTquk/83Br1G+jMGOTP6qLjR2qSR0jmVllkXbTZ7U2g+8fV/1Z7yEiADbn1KdKsPSYWr1Xy7C+Yz8gGY= 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=AH5+aoas; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=s0djRNZ0; 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="AH5+aoas"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="s0djRNZ0" From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1739820341; 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: in-reply-to:in-reply-to:references:references; bh=XcLIgubDyx112NcTEUntYR2RwFWy3FKFfJsT0gklaPA=; b=AH5+aoasjLdY8QEDhIjebV15DeVa10OY5H4Uwkb2f8xJHY41rrIR3ZbxQFbEhXHZG7YoN+ oqVRLHlW5WAibaQnK9nhXdIzrm3AzXg3TxeF9EwQZZIaSU8TaK2V+8lNVzwLhmbN5o2WxL soVKggf4YF3TeqIVD6eRVcYJ7d00TAs9OCw9hRZxJVdChmuoM3sYTQQLqslHrMHYiQJf0p WsXEArfAjfFne/CtsSLIw9m+Bz/k4U5U+yr/6H+d5jxokDRu17WG6bSLArnvvno1KPw8Bc TejdAiCmrVrnfWOB7REGd/cV86oeaqNDXw7t+J8xzhqMKpr5OWGJybLn2w4bVw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1739820341; 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: in-reply-to:in-reply-to:references:references; bh=XcLIgubDyx112NcTEUntYR2RwFWy3FKFfJsT0gklaPA=; b=s0djRNZ0NE4Egs0oPS7OFU9lfMFnZslbnHO+zBWXlCD1qOUD2NDMCCHXUWCxqYeVgJ7DOw Tyxb3c+A32H62QCQ== To: Eric Dumazet , David Laight Cc: Anna-Maria Behnsen , Frederic Weisbecker , linux-kernel , Benjamin Segall , Eric Dumazet Subject: Re: [PATCH 2/2] posix-timers: Use RCU in posix_timer_add() In-Reply-To: References: <20250214135911.2037402-1-edumazet@google.com> <20250214135911.2037402-3-edumazet@google.com> <20250214165904.33b73dc8@pumpkin> Date: Mon, 17 Feb 2025 20:25:41 +0100 Message-ID: <87ldu4jruy.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Fri, Feb 14 2025 at 18:48, Eric Dumazet wrote: > I just noticed the rescan is racy anyway, because when the other threads add > a timer, the timer->it_signal and timer->it_id are temporarily zero. Ah, you noticed too, but that has nothing to do with the rescan. That's broken already today. Thanks, tglx