From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from r3-22.sinamail.sina.com.cn (r3-22.sinamail.sina.com.cn [202.108.3.22]) (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 64A662D6E5B for ; Tue, 11 Nov 2025 23:27:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.108.3.22 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762903670; cv=none; b=n8+NnlC1KFw9iy/6968nASWQeL69rMFgksdsFAcpwFj4ZDLfYXrOvF6V5ZruJd6qpCfi1SXbEU+EJHhMLgdMyzFrWaiAD17QViNf0i+kVK+U0vnkDxLWTAeafCosa2hBnF7ZagzXpGOh6bhY/k32EF9tu2aTWi+oQp1qJ7yCVms= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762903670; c=relaxed/simple; bh=eZjTmwtz+7Q+Isk/XxtEXZJV8VFvkeLCo6yPTZFlPw4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fVS7t6OeLN0sFRC2rXxukJHpNHyMaTcyLYrph5cYJh9AGvS7tgqrzK/kyvdNBKIkivK4cSz+h4PN7iq5e4vqGMwRsidUgZeJlPVa5wbw+JlUxvqDepcw4IT503APPEUZBPLY2RAB8XNvqs3p2yHwxm1p+Hk1qZP7ASO+TFtS9Zo= 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=Eb7Y946H; arc=none smtp.client-ip=202.108.3.22 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="Eb7Y946H" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1762903665; bh=6dssGtoxFvrdWgfTT2kXaA+5BFhRRsYwUSv5NHT99RY=; h=From:Subject:Date:Message-ID; b=Eb7Y946HZhuectGR39zvoskGoEsjrZgXcsAqIaCGFaKDe52bGVvlvpCgkMY0VQxaQ a2tZVwtpCgkvAEot146/marl3LVUsTZoFHtGLyCHdrR70jKUipF8cYI2tptwKYDpxH Xu1gI4piPL0nqmi5Dma9CFfkWurpi0Zf2NNK+K+w= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.57.85]) by sina.com (10.54.253.33) with ESMTP id 6913C66700003DCE; Tue, 12 Nov 2025 07:27:36 +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: 7485146684944 X-SMAIL-UIID: 31B521ED859D4A49A9E8A77A33A889AA-20251112-072736-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [trace?] WARNING in tracing_buffers_mmap_close (2) Date: Wed, 12 Nov 2025 07:27:26 +0800 Message-ID: <20251111232728.9139-1-hdanton@sina.com> In-Reply-To: <69136cdb.a70a0220.22f260.0142.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 > Date: Tue, 11 Nov 2025 09:05:31 -0800 > Hello, > > syzbot found the following issue on: > > HEAD commit: 4a0c9b339199 Merge tag 'probes-fixes-v6.18-rc4' of git://g.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=127c3bcd980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=19d831c6d0386a9c > dashboard link: https://syzkaller.appspot.com/bug?extid=a72c325b042aae6403c7 > compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13fb5342580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167c3bcd980000 #syz test --- x/mm/mmap_lock.c +++ y/mm/mmap_lock.c @@ -240,6 +240,7 @@ retry: /* Check if the VMA got isolated after we found it */ if (PTR_ERR(vma) == -EAGAIN) { count_vm_vma_lock_event(VMA_LOCK_MISS); + mas_set(&mas, address); /* The area was replaced with another one */ goto retry; } --