From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail3-163.sinamail.sina.com.cn (mail3-163.sinamail.sina.com.cn [202.108.3.163]) (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 C82323815D7 for ; Thu, 12 Mar 2026 22:07:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.108.3.163 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773353276; cv=none; b=j222cNKuhr46R1FH3rYBfcgo2Ijy1I6SgZWCHhxRWVGALzfTh9xpFVmGjW+0d+uffgaqdrx1JQAt3tqI54A/xan/v3JKWpg1ioretKfcocsfnH0pw4YWTBwUZUYtTYtDpvRB/FBo5ADXdQ8T+RmIlIyW3ZnMUb2fji/nyqCIdV0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773353276; c=relaxed/simple; bh=wANA8mNl5rEE1PmCUJGcIpowoF15a/Kf+XJ9ZcIrD+I=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Hfx0DMNhGr4zeii97lkj4WuNQ2faB2BwFtCZGFGv3dHdQ9nGO7ig35iPJChKq56qA8HPlV9AduAxvPxE1Gn/IRKDOWgSu0ogQcDCAVBQ5N99Q0oz1or8JOnGOkfbvLY0+k2Vhbtysqqo+AVpx1KoHTqSJsONN83SI79IHYqU9O4= 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=IBua46JR; arc=none smtp.client-ip=202.108.3.163 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="IBua46JR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1773353272; bh=Z4kkNVp4GBLZUTFuFm3y1JEf8SqpCdJOcB24CYM853s=; h=From:Subject:Date:Message-ID; b=IBua46JRWgnZ1+rKC3pdpeKDT8xel4d+eIEHYOkw/TqZPo8Taa1STF6ZMUaZJFyS9 jERnlApLltQdLZvzRMcYjbpCY4oQHH1qj6lebpsAQ5ytH1epvXwrWiOYKcWclFftab LZeJChiR7lfr0J1KaqLvz3xzV97FgvWufNrP1SCI= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.62.144]) by sina.com (10.54.253.34) with ESMTP id 69B337EF000058D0; Thu, 13 Mar 2026 06:02:24 +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: 6431336291752 X-SMAIL-UIID: 481D6E6DCEBA4B3395941455330E070C-20260313-060224-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] KASAN: slab-use-after-free Read in sock_def_readable (2) Date: Fri, 13 Mar 2026 06:02:17 +0800 Message-ID: <20260312220219.895-1-hdanton@sina.com> In-Reply-To: <69ad7ccb.a00a0220.b130.0003.GAE@google.com> 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 #syz test upstream master --- a/net/atm/lec.c +++ b/net/atm/lec.c @@ -474,6 +474,7 @@ static void lec_atm_close(struct atm_vcc priv->lecd = NULL; /* Do something needful? */ + synchronize_rcu(); netif_stop_queue(dev); lec_arp_destroy(priv); --