From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f205.google.com (mail-oi1-f205.google.com [209.85.167.205]) (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 F2AAA353A6B for ; Thu, 16 Jul 2026 07:51:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.205 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784188293; cv=none; b=rSI4I84onfL07cSCxc2/yLj++h1eoV/w3n/PQVSsc0xb4C5dtbCkA4j3QGAxq0ko7qCnl3OcjE/oCgKIgHtHgPNCNtXpErq8h+WKGZTUmK8CiAv/cK2rf/9YPiUGXHK+RWUTHHNl7sCM4Y029JZGjphHILc860zTC5hiiEOg0Mw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784188293; c=relaxed/simple; bh=MnUA7xvXhdzsDztXHSYSykI73Qz2dZupLilI6Mv8sNE=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=boKwvvFnTxvvEL+9YT7h8SV63JzwPNGosi7LLObO4eS6nPHLxDoDYyXomE3R95V7TiQ635m6bNU0PiAlO+qrJXgJ8bfRUyNVzG6GQSLTvv8AAL5SGlr70E8PsApyK7wLOZu/h7Gfo2haJfN10FWuOYq7zBsmFILFgda373D2EJ4= 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=209.85.167.205 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-oi1-f205.google.com with SMTP id 5614622812f47-4959c49e054so6212692b6e.3 for ; Thu, 16 Jul 2026 00:51:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784188291; x=1784793091; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=OVCfrtcYUm9cqZ42G2A6Oc73GeyR8UPAjNa9RWMEReU=; b=gvwgRBKTvxE/bz+VEuXEzoq+XuxA8nE+xfpcsQIL3w7U8XA/J8ggm0iZOMkp3nTE5k V46nfrm3BlDDLZ7KWYzx3dFLruo4GLOcl67kLY1PprbtMWp4uvOds8vqKmJu4Ma9Wv8Q nroDw6h0yCPr7MdO8fQcUw5vmk2+d74PQt5OD8+OwoCUzzF1XhLZsXAQ7FBudqwXushS aIwt7whnpbfTevGcDijObngt02lxRwjthb9JPOIuwAYsm+WqZS1UGEBmOmpNjEmzw/Ap AFUMEpbK33VzFkRbUePAesvjYUX3g9DPVRlXfMHXBz8aiguQBK+NXhjFtppXE5lsVIZv BzIw== X-Forwarded-Encrypted: i=1; AHgh+RodN5+IcY4S6ZivJOdYWiYLwWdjyjF0thRDjbNuVPhKLRzJ7vk3CMQpdPI1a3zc/zgnuP98h/6aOMABDQ==@vger.kernel.org X-Gm-Message-State: AOJu0YyXdsQOBL6AVy++zMQZvO892Ixx1bHgQrr5nJa35I6uRTWu/TZc nR38BQXnvRshz7Lod1qoROh4ww5qXsEeRPxqniS+XIJ/uv/uTPmjgg8pBTd2zfmYd96h1tEWxba SfRLa8W0J8qKx8MIsil8Yma1dwyoqCMLIm0nbpO1cxRbBkpiJzFMKBhfBK+s= Precedence: bulk X-Mailing-List: linux-nilfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:5145:b0:492:973e:1c23 with SMTP id 5614622812f47-4a495f49ebdmr3933900b6e.15.1784188290873; Thu, 16 Jul 2026 00:51:30 -0700 (PDT) Date: Thu, 16 Jul 2026 00:51:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a588d82.c96faac9.59e0.0013.GAE@google.com> Subject: [syzbot] [nilfs?] INFO: task hung in nilfs_transaction_begin (3) From: syzbot To: konishi.ryusuke@gmail.com, linux-kernel@vger.kernel.org, linux-nilfs@vger.kernel.org, slava@dubeyko.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 58717b2a1365 Merge tag 'sound-7.2-rc4' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10e344b9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5c4196ba0e33631d dashboard link: https://syzkaller.appspot.com/bug?extid=cae54346a70bbceeff2c compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=169b8c32580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10a454b9580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/42eab9b1642d/disk-58717b2a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7c5a694b4f2d/vmlinux-58717b2a.xz kernel image: https://storage.googleapis.com/syzbot-assets/348d72144bc9/bzImage-58717b2a.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/d5827c24deaa/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+cae54346a70bbceeff2c@syzkaller.appspotmail.com INFO: task syz.3.20:6062 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.20 state:D stack:25640 pid:6062 tgid:6052 ppid:5793 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 rwsem_down_read_slowpath+0x6ba/0x920 kernel/locking/rwsem.c:1114 __down_read_common kernel/locking/rwsem.c:1291 [inline] __down_read kernel/locking/rwsem.c:1304 [inline] down_read+0x9c/0x330 kernel/locking/rwsem.c:1576 nilfs_transaction_begin+0x364/0x710 fs/nilfs2/segment.c:221 nilfs_mkdir+0xd6/0x390 fs/nilfs2/namei.c:228 vfs_mkdir+0x406/0x620 fs/namei.c:5276 filename_mkdirat+0x285/0x510 fs/namei.c:5309 __do_sys_mkdirat fs/namei.c:5330 [inline] __se_sys_mkdirat+0x35/0x150 fs/namei.c:5327 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1613b9de59 RSP: 002b:00007f16131fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f1613e26090 RCX: 00007f1613b9de59 RDX: 00000000000001c0 RSI: 0000200000000040 RDI: ffffffffffffff9c RBP: 00007f1613c33e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1613e26128 R14: 00007f1613e26090 R15: 00007ffd7ee97478 INFO: task syz.2.19:6076 blocked for more than 147 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.19 state:D stack:26920 pid:6076 tgid:6073 ppid:5797 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 rwsem_down_read_slowpath+0x6ba/0x920 kernel/locking/rwsem.c:1114 __down_read_common kernel/locking/rwsem.c:1291 [inline] __down_read kernel/locking/rwsem.c:1304 [inline] down_read+0x9c/0x330 kernel/locking/rwsem.c:1576 nilfs_transaction_begin+0x364/0x710 fs/nilfs2/segment.c:221 nilfs_mkdir+0xd6/0x390 fs/nilfs2/namei.c:228 vfs_mkdir+0x406/0x620 fs/namei.c:5276 filename_mkdirat+0x285/0x510 fs/namei.c:5309 __do_sys_mkdirat fs/namei.c:5330 [inline] __se_sys_mkdirat+0x35/0x150 fs/namei.c:5327 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feb9c39de59 RSP: 002b:00007feb9d17e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007feb9c626090 RCX: 00007feb9c39de59 RDX: 00000000000001c0 RSI: 0000200000000040 RDI: ffffffffffffff9c RBP: 00007feb9c433e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007feb9c626128 R14: 00007feb9c626090 R15: 00007fff8cce9fb8 INFO: task syz.0.17:6080 blocked for more than 149 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.17 state:D stack:25640 pid:6080 tgid:6077 ppid:5784 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5510 [inline] __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0x164/0x2b0 kernel/sched/core.c:7326 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383 rwsem_down_read_slowpath+0x6ba/0x920 kernel/locking/rwsem.c:1114 __down_read_common kernel/locking/rwsem.c:1291 [inline] __down_read kernel/locking/rwsem.c:1304 [inline] down_read+0x9c/0x330 kernel/locking/rwsem.c:1576 nilfs_transaction_begin+0x364/0x710 fs/nilfs2/segment.c:221 nilfs_mkdir+0xd6/0x390 fs/nilfs2/namei.c:228 vfs_mkdir+0x406/0x620 fs/namei.c:5276 filename_mkdirat+0x285/0x510 fs/namei.c:5309 __do_sys_mkdirat fs/namei.c:5330 [inline] __se_sys_mkdirat+0x35/0x150 fs/namei.c:5327 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f172919de59 RSP: 002b:00007f172a11e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f1729426090 RCX: 00007f172919de59 RDX: 00000000000001c0 RSI: 0000200000000040 RDI: ffffffffffffff9c RBP: 00007f1729233e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1729426128 R14: 00007f1729426090 R15: 00007ffcc8738ab8 INFO: task syz.5.22:6086 blocked for more than 153 seconds. Not tainted syzkaller #0 --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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