From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 603531B5820 for ; Tue, 1 Oct 2024 19:20:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727810422; cv=none; b=FnFNeNjp9H8f5niMHO9w4B1DZkvK7wUqPZbHCkal945Fhm5uOtJEqxcB3ClbyxnG2IMlnV9dD+X3JXHtZH+z8nP5vr70lH9Gzg4vtxa86QtH2xomjB3t01O2dUf4goCU5OdGCGEpvfrv6Ccx1X7R2Gduv6Hh4T3PhbuoAWwRAPA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727810422; c=relaxed/simple; bh=l8OYaEgK8rWIvqiCcS9aOfiCpVz6pegQvvwXGV+5ddg=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ovf68YrVRa4nV4t/lPnoBfB3coHn7C8RlfKqF0M9xLrxPHCv7dFBPbjDvI6KM0jZA/ntak2lKi0UhMKnAJgGc/6xJkiQm/XYc54XW3Yu1nUlMOizCfYwMgqqJHEPgA5pfJB99w1leszWQSi9rSwxCfKRMRQK9NNFt66lxekZKbE= 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=209.85.166.198 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-f198.google.com with SMTP id e9e14a558f8ab-3a348ebb940so47010775ab.2 for ; Tue, 01 Oct 2024 12:20:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727810420; x=1728415220; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=GpD9/fvZE/BXOJ9tA2sRSNvX4bC2KiiW9AZPVj6j7Pg=; b=gC3pLleB6Wp5w4JJir13cZH12NmFinilZk6nz+g89U6sSgrQnvWQo0Aea4nxZ7D32a nHBYNiwnC98u2KukMTcoQ4HSs4fo9p45FkX93ZHXqmSUqJEMmnOojUI9uE/W9Mry04wq O+BJnzAF10O+7kwe/xwo5unEk8bvuIS3pb8IXWn8xYuhdBrUAotiZyVrysSqFBp720yM Ns+ALAvXujoy2B1GJgH1bllp4YBSYKxg1ODegCuR8T66xjU6lcxfELqj1fqPHwJbVZnf JuB3TWABLkY4gVYZFsaTupMaeikowW0XX0KfKofqCPlWyf1j94RzS3hrGxJmI3ZGMkWm 9qdA== X-Forwarded-Encrypted: i=1; AJvYcCVb8T6F3/IOGoJPZQ/ut76SO7SmuA/qohnADe0BYsOox/YY7+uk/oTil/Kh13jircMib1s5tRf82r8oBeI=@vger.kernel.org X-Gm-Message-State: AOJu0YwMizCbVKrOCv+2+dFNUNoLFaqWZw6XnxXzTzJ0zpG9wrGDkb54 aBtuNKb2gODTzavgZLtaq1KMnhUKPiSHfJL53gs4klqAJscOlWBNmnWxJjamI1BZ+ZrY5zBLNS5 biCeoPmF69DpFqVLu4DxepHLIVijismXfmQtUmlyFsY/agW8A+uBxZqU= X-Google-Smtp-Source: AGHT+IFm+ztl6vR3+lrL4Gle17B1HZdm0JeMgYfyjtT9afU8WEZdxcK2bTNBBzsUyFcdGh0XljrNHYnk0BFBt4uwz+lB77/aMN2y Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1386:b0:3a0:92e5:af68 with SMTP id e9e14a558f8ab-3a36594a26emr6079915ab.15.1727810420523; Tue, 01 Oct 2024 12:20:20 -0700 (PDT) Date: Tue, 01 Oct 2024 12:20:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66fc4b74.050a0220.f28ec.04c8.GAE@google.com> Subject: [syzbot] [fuse?] WARNING in fuse_writepages From: syzbot To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, miklos@szeredi.hu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e32cde8d2bd7 Merge tag 'sched_ext-for-6.12-rc1-fixes-1' of.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12e8bdd0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1b5201b91035a876 dashboard link: https://syzkaller.appspot.com/bug?extid=217a976dc26ef2fa8711 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a585cdb91cda/disk-e32cde8d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dbeec5d7b296/vmlinux-e32cde8d.xz kernel image: https://storage.googleapis.com/syzbot-assets/000fd790e08a/bzImage-e32cde8d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+217a976dc26ef2fa8711@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5296 at fs/fuse/file.c:1989 fuse_write_file_get fs/fuse/file.c:1989 [inline] WARNING: CPU: 0 PID: 5296 at fs/fuse/file.c:1989 fuse_write_file_get fs/fuse/file.c:1986 [inline] WARNING: CPU: 0 PID: 5296 at fs/fuse/file.c:1989 fuse_writepages+0x497/0x5a0 fs/fuse/file.c:2368 Modules linked in: CPU: 0 UID: 0 PID: 5296 Comm: kworker/u8:8 Not tainted 6.12.0-rc1-syzkaller-00031-ge32cde8d2bd7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: writeback wb_workfn (flush-0:52) RIP: 0010:fuse_write_file_get fs/fuse/file.c:1989 [inline] RIP: 0010:fuse_write_file_get fs/fuse/file.c:1986 [inline] RIP: 0010:fuse_writepages+0x497/0x5a0 fs/fuse/file.c:2368 Code: 00 00 00 44 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc e8 79 b6 90 fe 48 8b 7c 24 08 e8 af 6f 27 08 e8 6a b6 90 fe 90 <0f> 0b 90 41 bf fb ff ff ff eb 8b e8 59 b6 90 fe 48 8b 7c 24 18 be RSP: 0018:ffffc900044ff4a8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffc900044ff4f8 RCX: 0000000000000000 RDX: ffff88802d42da00 RSI: ffffffff82fcd286 RDI: 0000000000000001 RBP: ffff88805c994aa0 R08: 0000000000000000 R09: ffffed100b9329d7 R10: ffff88805c994ebb R11: 0000000000000003 R12: ffffc900044ff840 R13: ffff88805c994880 R14: ffff88805f330000 R15: ffff88805c994d50 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020055000 CR3: 000000005df4a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x1a3/0x7f0 mm/page-writeback.c:2683 __writeback_single_inode+0x166/0xfa0 fs/fs-writeback.c:1658 writeback_sb_inodes+0x603/0xfa0 fs/fs-writeback.c:1954 wb_writeback+0x199/0xb50 fs/fs-writeback.c:2134 wb_do_writeback fs/fs-writeback.c:2281 [inline] wb_workfn+0x294/0xbc0 fs/fs-writeback.c:2321 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup