From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F389E1E411C for ; Fri, 8 Nov 2024 11:30:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731065406; cv=none; b=VFqFhkal+txfG1ixH6wJOzeSFl8NtlvsaRWpKiHNqxxEUfZ1E3eZ7w3RqwuneRrLb9xx/YyT6i4AvzMVAWkpTurXgB7ISDFTluvKG7pupfbLLIi0vmRuSLJyI0zqDmzFXC2J39DIRxKQyFp8duFP8Ujvgv0fMgBMmKD99ofDKPg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731065406; c=relaxed/simple; bh=9cUQtsMu2qXQLX0UYmLKp2Hcg4Lu4cElCkUuCBgeaTM=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=gWOUFtaFuDR04r4pRf9Sxii7m9dXBFXMKPHYsx2nThkukCupP6JFFi+8HjQdjpbqPCXLjg9mtu0zsTdIT+xDosViXZisN76e8wWhb3VshS0rcRitnFmo89t8B4UB83at6bSbLz4+rbmhfPoceKkEaUj3JIwMlOVQuGJDP4Tk+TM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.200 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f200.google.com with SMTP id e9e14a558f8ab-3a3ba4fcf24so25413975ab.0 for ; Fri, 08 Nov 2024 03:30:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1731065404; x=1731670204; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=0TCXCYWg1WbvXzrBqVd+I1nsEDlQ+QEtCse50dmW3+w=; b=hnC0RsBPfUYufUO9VrYiFT/iCHg3qb+zoZbxYFo1xT469AAuZbpB3AbC5PLOzreC7L Id4U5pUN/YxMi5hE54+Gf29uTFE94VmKCMiN/yMKf8R2NcmIktDOcDGyBanpD3U928wd Bk8+Z6omPvPox/ewGdwih/L3AquTVn6b/1l6vIJsNP+PBXEJa7omYLwKxBoEXJMyf9GD IxA07GMxkUxZ5gaG1BPF4xLcmblm+991bO9WLkPOX2OnCkadQoHz/4R7x4d8sKUBU/K2 pc89EOZLtYUIL0YVoGnqLmIpTHqVql1nfTp5E0cFAmLnq9xqJMO+g0TmJUwGJsjK4LvH dm3g== X-Forwarded-Encrypted: i=1; AJvYcCUP9Epbdk+vGSaiZiRcFtKe9JVhz5ffkjWNDWXbW974f8IoVS0W/7t2TWNi2rK/KVQ5C4d7bf3r/blyo8M=@vger.kernel.org X-Gm-Message-State: AOJu0YyOKyfL3HBeIYkDsdY+Dj8qktQEApLJzXfh6aaO3Tb+9veaF9R4 gHuGY1e0FiZfMkHMvv56q111JsUeSV1f6g4/uENhYSb2I5mc98UKYtgJ8p0puqhXpbX28DckjY4 EtQ15+2GuWLW589KK9cMlFx9AQwjAbnzPotkGagAaN3SflNB2XQiTY84= X-Google-Smtp-Source: AGHT+IE+HNz7/U6bFX8ibYDuM9m/pWUohJKAzkG8ZkjZkacZp8PVJ2i9vHPUwHmT8Ty6iFjcWurNZlPFxgowyatFw+s7Ed3498CR Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:12ee:b0:3a6:b0d0:ee2d with SMTP id e9e14a558f8ab-3a6f19c6039mr30320055ab.9.1731065404099; Fri, 08 Nov 2024 03:30:04 -0800 (PST) Date: Fri, 08 Nov 2024 03:30:04 -0800 In-Reply-To: <20241108111029.3505-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <672df63c.050a0220.69fce.0012.GAE@google.com> Subject: Re: [syzbot] [kernfs?] possible deadlock in kernfs_seq_start From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed 2024/11/08 11:28:47 parsed 1 programs 2024/11/08 11:28:47 [FATAL] failed to run ["./syz-executor" "setup" "fault" "binfmt_misc" "usb" "802154" "swap"]: exit status 67 mkdir(/syzcgroup) failed: 17 mount(binfmt_misc) failed: 16 write(/proc/sys/fs/binfmt_misc/register) failed: 17 SYZFAIL: write(/proc/sys/fs/binfmt_misc/register) failed (errno 17: File exists) Tested on: commit: dccb07f2 Merge tag 'for-6.9-rc7-tag' of git://git.kern.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=1490835f980000 kernel config: https://syzkaller.appspot.com/x/.config?x=9d7ea7de0cb32587 dashboard link: https://syzkaller.appspot.com/bug?extid=4c493dcd5a68168a94b2 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=12a3dd87980000