From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (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 573F11B21BD for ; Fri, 19 Sep 2025 00:47:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758242825; cv=none; b=VRSSG304o8m47ft/x91ipz45uEc1KTj4/mWeD3C8bKy+76w+kcRB8oiTBSsjslCNpYYqeX4a+1O1eB6bV3Prv73NJIyioF2xTACmgBtlez9SF4NKRBVR1sRpfUANJOUTCH8zEg6MeL1flJ/II0fApfgqUta1oPvDABo/RHgHfu8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758242825; c=relaxed/simple; bh=GAyoTGXiwJpiSJtkzq7eimtPFrQs1luy6Xcd4e7gwm4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Xp/J/Q72YigyZHpl9u4mpjtULA/aUG2tHGNC5tD31pgBGp0dUnWwkd9Yemnq6kGOCI4NZfyWfXRCq7bmvcDWl/xrxGl/OiMNCWVUH4MBrQQYfarzFOSsfiF4p+PZsw1BjOFw4sNZM8USVbbta21X5g9/vMtwfKRvzmQHBSNl9qA= 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=209.85.166.199 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-f199.google.com with SMTP id e9e14a558f8ab-4247661a0c9so15274225ab.3 for ; Thu, 18 Sep 2025 17:47:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758242823; x=1758847623; 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=F95r+cTSDsZmv2bsi7ZtAwmAtPSWWx5N9hZP+sQyKBY=; b=J/FzoAYGQMCZBImt2z3I02TQB3IF4jq1ZdAmIjI9oyVQwZ3YrzhQrp4NmtR0xEjreK KgXRv6C0/uA9WHUfO8iarggXGBrQARSw4bJRH52szK/I5hAqF3+DFw/gJ6eusP09P0dS 223Duzoij+yxzHC06SLeQAPGph0lju9kKZ9vcP6IZqFHQECd0ibnNoaldtHosCP8gPlO W9hdUmgIO1N7GGhY/b0lQ/BIBDjXCYH/2T8FvGwJZgNBE4FomKwxVdLkWCB7UvDWdJ61 PaT8Gy0fQM5U17MaFssJ/N2fTnmQ6u9Vkr6gRHnUz1v3xL+PuHmLSAgqOHkzQNjN3gCV LxJA== X-Forwarded-Encrypted: i=1; AJvYcCVN5dwOIRi8Ze5xpZ/NX6RanmrzubXfDYqqSwiWLPy8R3c1txzfZE+EVHhrp4AwXnC3IHy8Hw==@lists.linux.dev X-Gm-Message-State: AOJu0YzFwZTZfPglma5hCMQQYYIXb+x+cdlsPqeSxytxXkQqz88uCZ0y UAuk33R+/dhmwp0rXnJeS8VIih7wiqUvfGxJ0CS48konGOrmtDbieN02MLFJqeQcCDOxst6lKXS 7tUeAHc1jaPWqu7jgOgqLzmZmsKTzJ9xmX/eHfCm/BJcjCiMjo0qdtc6NS3Y= X-Google-Smtp-Source: AGHT+IFOkT2sskOvdQRdZJpZwu0XZ4v5A2KP/qDpkW3dcDHnDZoHAMhH1SUsufhBPr8jsYoRlJ6NYQ1DJz7vrsuCddqRfqGjktXv Precedence: bulk X-Mailing-List: netfs@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1746:b0:424:80f2:2a9 with SMTP id e9e14a558f8ab-42481902677mr25900315ab.5.1758242823605; Thu, 18 Sep 2025 17:47:03 -0700 (PDT) Date: Thu, 18 Sep 2025 17:47:03 -0700 In-Reply-To: <68cb3c24.050a0220.50883.0028.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68cca807.050a0220.28a605.0013.GAE@google.com> Subject: Re: [syzbot] [netfs?] INFO: task hung in vfs_utimes (3) From: syzbot To: brauner@kernel.org, dhowells@redhat.com, jack@suse.cz, jlayton@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netfs@lists.linux.dev, oleg@redhat.com, pc@manguebit.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit aaec5a95d59615523db03dd53c2052f0a87beea7 Author: Oleg Nesterov Date: Thu Jan 2 14:07:15 2025 +0000 pipe_read: don't wake up the writer if the pipe is still full bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=175fa534580000 start commit: 46a51f4f5eda Merge tag 'for-v6.17-rc' of git://git.kernel... git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=14dfa534580000 console output: https://syzkaller.appspot.com/x/log.txt?x=10dfa534580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8f01d8629880e620 dashboard link: https://syzkaller.appspot.com/bug?extid=3815dce0acab6c55984e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17692f62580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1361f47c580000 Reported-by: syzbot+3815dce0acab6c55984e@syzkaller.appspotmail.com Fixes: aaec5a95d596 ("pipe_read: don't wake up the writer if the pipe is still full") For information about bisection process see: https://goo.gl/tpsmEJ#bisection