From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (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 F243E1FB3 for ; Wed, 21 Dec 2022 08:14:41 +0000 (UTC) Received: by mail-il1-f197.google.com with SMTP id l16-20020a056e02067000b0030325bbd570so9663931ilt.0 for ; Wed, 21 Dec 2022 00:14:41 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=A7+8fuqPbIIauDX75GlkNV66FuhTqueE+eYRZ4kmpgo=; b=OLRw5jmUnLsXkCS61zJg3CPsFsWueFTiIcnJZ/f0+Yv7CuwlRCzIg6ThgxzwQ9TmnK 4FDcgAMf70lla5BiJXeLqk7pht6vkeiBUHQPZtGqyMmFc4MgrqNpXGeGVqaTV2EJ7MZC FwwUiSFMSQT8dvT6DdNkzrWLd/cQKu+0ZvDdpWAjrkhPNTrNISYzW8smqjhuiXJ7YKVY OTMAlsyoS8LlDxZP93yZLnqoC4T1DuRUqCoVNVIwlmuU6H1gzyIcQLnTzmXXXpxk5W0S 0fIL7oUWZyhLaAzNvRNfQplfvzqUpSkRAKAFO8mCKE50U70wHu+yQzQZ9PNc2KqlemyG Yhhw== X-Gm-Message-State: AFqh2ko3qW7kRbkl8wOuI1737PG8WuWujdg1RJAYx1muFaKCStOyAnxH HsZgMPXAfU3G7OvEr3Jcmg4uuHVYPU17gA7Mzw+5Gm4i04Qb X-Google-Smtp-Source: AMrXdXupwWn7ThN+0DC+oN0Jgz8FQ2+SYhQnb2YaIdKCjtpr7VtKkMb0ZcHkelzjW9Gypy+7024Cj0HmUL/p40wDZcBnzKwGnaE1 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a92:4442:0:b0:303:c52:274a with SMTP id a2-20020a924442000000b003030c52274amr90595ilm.171.1671610481055; Wed, 21 Dec 2022 00:14:41 -0800 (PST) Date: Wed, 21 Dec 2022 00:14:41 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ed1df405f05224aa@google.com> Subject: [syzbot] [ntfs3?] possible deadlock in ntfs_set_state From: syzbot To: almaz.alexandrovich@paragon-software.com, bvanassche@acm.org, hch@lst.de, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, martin.petersen@oracle.com, nathan@kernel.org, ndesaulniers@google.com, ntfs3@lists.linux.dev, syzkaller-bugs@googlegroups.com, trix@redhat.com, viro@zeniv.linux.org.uk, yanaijie@huawei.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: aeba12b26c79 Merge tag 'nfsd-6.2-1' of git://git.kernel.or.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=1655e690480000 kernel config: https://syzkaller.appspot.com/x/.config?x=4d348fc1e0f483c9 dashboard link: https://syzkaller.appspot.com/bug?extid=f91c29a5d5a01ada051a compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15332c9b880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16647dc8480000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/661fe33f851b/disk-aeba12b2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c938bdcf3ad0/vmlinux-aeba12b2.xz kernel image: https://storage.googleapis.com/syzbot-assets/e7f738de30b7/bzImage-aeba12b2.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/b4ed1012076c/mount_0.gz The issue was bisected to: commit d9a434fa0c12ed5f7afe1e9dd30003ab5d059b85 Author: Jason Yan Date: Wed Jul 20 02:51:20 2022 +0000 scsi: core: Fix warning in scsi_alloc_sgtables() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14a1c453880000 final oops: https://syzkaller.appspot.com/x/report.txt?x=16a1c453880000 console output: https://syzkaller.appspot.com/x/log.txt?x=12a1c453880000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f91c29a5d5a01ada051a@syzkaller.appspotmail.com Fixes: d9a434fa0c12 ("scsi: core: Fix warning in scsi_alloc_sgtables()") ntfs3: loop0: ino=5, ntfs_iget5 ============================================ WARNING: possible recursive locking detected 6.1.0-syzkaller-13781-gaeba12b26c79 #0 Not tainted -------------------------------------------- kworker/u4:6/3799 is trying to acquire lock: ffff888076a40100 (&ni->ni_lock){+.+.}-{3:3}, at: ntfs_set_state+0x1da/0x680 fs/ntfs3/fsntfs.c:920 but task is already holding lock: ffff888076a46fa0 (&ni->ni_lock){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1123 [inline] ffff888076a46fa0 (&ni->ni_lock){+.+.}-{3:3}, at: ni_write_inode+0x14d/0x11e0 fs/ntfs3/frecord.c:3226 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ni->ni_lock); lock(&ni->ni_lock); *** DEADLOCK *** May be due to missing lock nesting notation 3 locks held by kworker/u4:6/3799: #0: ffff88814514c138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0 #1: ffffc9000ecc7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264 #2: ffff888076a46fa0 (&ni->ni_lock){+.+.}-{3:3}, at: ni_trylock fs/ntfs3/ntfs_fs.h:1123 [inline] #2: ffff888076a46fa0 (&ni->ni_lock){+.+.}-{3:3}, at: ni_write_inode+0x14d/0x11e0 fs/ntfs3/frecord.c:3226 stack backtrace: CPU: 0 PID: 3799 Comm: kworker/u4:6 Not tainted 6.1.0-syzkaller-13781-gaeba12b26c79 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:0) Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:2990 [inline] check_deadlock kernel/locking/lockdep.c:3033 [inline] validate_chain+0x4843/0x6ae0 kernel/locking/lockdep.c:3818 __lock_acquire+0x1292/0x1f60 kernel/locking/lockdep.c:5055 lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5668 __mutex_lock_common+0x1bd/0x26e0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 ntfs_set_state+0x1da/0x680 fs/ntfs3/fsntfs.c:920 ntfs_iget5+0x34c/0x36f0 fs/ntfs3/inode.c:504 ni_update_parent+0x7ea/0xc60 fs/ntfs3/frecord.c:3182 ni_write_inode+0xe30/0x11e0 fs/ntfs3/frecord.c:3277 write_inode fs/fs-writeback.c:1451 [inline] __writeback_single_inode+0x4d6/0x670 fs/fs-writeback.c:1663 writeback_sb_inodes+0x812/0x1050 fs/fs-writeback.c:1889 wb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2063 wb_do_writeback fs/fs-writeback.c:2206 [inline] wb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2246 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches