From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail3-162.sinamail.sina.com.cn (mail3-162.sinamail.sina.com.cn [202.108.3.162]) (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 456A330C165 for ; Fri, 28 Aug 2026 09:01:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.108.3.162 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787907687; cv=none; b=Xfl4EFro1iqznWeK3pFg5yFl7/jfxdLUN/Lo5poEiqJvMVh/OFM1aEGFYvNF2xc1pZ5VpLQ6qe1EIA9um0a9cEwTKgvqzgYVc342j+d2VwPRoEx6IuESquQLtUlMkc2YEvmKgJirfi4EizJdoU3V7iURy1HS0meSRPdMsFGlRDY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787907687; c=relaxed/simple; bh=r9+AOLRFjFQYDmlGo6RU1nUidA/os8pW1y9nXU1lfAM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lVWeUAo4IW4NsXCCirbS8i/tPQGbkFuztXUUtxnzeQYyBa8kep2F15hpipY7LoNu3vThLXA7LjTOtR/ePGYOkMaYANIpgPqpOU46j15CPa5hh4BYefn1+5nbcjDVVoNrMNCYR2VUTlHOaSXIgL1bQ2nUmfdmAKdMA+GMIBqA61s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b=wkDBLFPY; arc=none smtp.client-ip=202.108.3.162 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b="wkDBLFPY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1787907682; bh=srAaliEDGMeII5077n047iXQZy11pZEpc56pqzlQ+dw=; h=From:Subject:Date:Message-ID; b=wkDBLFPYZ7qxfnE/91+xP5eeOSzDQjyu0eCE8DtJCqOXHcEnsd90ZQk4QDO8F1P9Y FZ213bsU6ncnjCwRP1JqH5plpIGNFZTtvqJDUHFujU6qX02Nh5WZtMWe7qNMvyatfe 2/W40hvH4T4nyDBHlKZKyCjvNKpWWSjs6LpGDjyM= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.62.194]) by sina.com (10.54.253.34) with ESMTP id 6A914E5500001447; Fri, 28 Aug 2026 17:01:11 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 5278146292015 X-SMAIL-UIID: E7CCE3D0A05A4AC1B1F9E9A3F3B2E189-20260828-170111-1 From: Hillf Danton To: Eric Dumazet Cc: "Shin'ichiro Kawasaki" , syzbot , Nilay Shroff , Keith Busch , boqun@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] WARNING: locking bug in tcp_tsq_handler Date: Fri, 28 Aug 2026 17:00:56 +0800 Message-ID: <20260828090059.1895-1-hdanton@sina.com> In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, 26 Aug 2026 06:05:15 +0200 Eric Dumazet wrote: > > I decided to ignore your rants a long time ago, as many others did. > Aha another rant chance for showing you the steps to quiese syzbot that reported deadlock. [11] Subject: Re: [syzbot] [input?] possible deadlock in tasklet_action_common (2) https://lore.kernel.org/lkml/6a913c08.4d659fcc.734b4.001b.GAE@google.com/ [12] Subject: Re: [syzbot] [input?] possible deadlock in tasklet_action_common (2) https://lore.kernel.org/lkml/6a90ef26.27659fcc.2ceef7.0018.GAE@google.com/ This is one of my good works in 2026 in addition to catch your HBCs.