From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (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 0AA7E38B7B6 for ; Thu, 26 Feb 2026 06:18:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772086704; cv=none; b=YH046ObAlPgdU6Ye/Ybu9GUrc8m+cLKNgsyMWPOj0NQRxI9ByaHAFDCpdrU33idAB/yo/1O44XeLHd3nMffB6IS+H69fYJSdjm1chWynOw5yF6d39HJYbiDAICLZXAjMHlydjktG6j4+Q2ol+M3GOvrHRRwibWWrzmkXfW47fFc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772086704; c=relaxed/simple; bh=txmVu/Uhc7+nyD3FKR2nsTIFnvCyzW8vKi2FF7DCjuI=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=W2cqx4hFZYGgtmbfLDG2jP/G8CGGpLmm13/2nZC7OtodtJou0YZYGVq7KhFTtwAolBQcoRltH35Ol/d48+xaMGgn/GxahJKYAvdHBifYUOEl7PWh5PDbvyLwKZluKqeuxMNZP4UoL7PNZZbetl99+AL5iLz5EAxEP0PdCFr+Us4= 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=209.85.161.70 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-oo1-f70.google.com with SMTP id 006d021491bc7-679dcf1f680so14591285eaf.0 for ; Wed, 25 Feb 2026 22:18:21 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1772086700; x=1772691500; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=pfEp6IXCKbLOFmkdSl5qd6w1nd5cyXI9rCt5gVdNXws=; b=MOsgeiU8FRvibBVVRJocCNZ7AbOd+ATfgbd4SiFCy9c0Q4kELugZJ0IKx07ZFi4gN6 09UGVO3hIUUzNtce86vbtQhlfqb8Tcl9yEzFMVMqEmj53h/Sf5XjS1NYsqKURyGH2N6+ Uy0qw5vl5Nohv/GZV7uPGzhv+qmdod7htRgzioMUBEqIEqgN7CGlXxX/unWMy4/I6cWa ITr1928ZcgcwL7UDW2kMLZHmyO1YTNUYjWrJo9pxWs1W4BrLzRa5+sCCNUmDObe50Umm aLe5qh+DY4tj9Dmh7vGPWVgLM9iRgyJhPVwjKwJrJevLJLSR+gSl1ayCfsE8foxw8IYl VJdg== X-Forwarded-Encrypted: i=1; AJvYcCVk/jAfzjRG6RMhGD16fnAaLaV6vH/7Wn/YunaggnIjaaQ1/8ktVLK6UzuzF2rYA8WXPRFIxurKgwWEN+w=@vger.kernel.org X-Gm-Message-State: AOJu0Yxogj+B6BUDFRIcvpBpXBecYMjcQNBXHOZrC9PCqDNN1hdDYHsX nGBk8U13JvXgoWy2Pu5ZxdjR2CO1KqwzHU817HCtVWJVTfg8yuTd/0AOIiKrlmm9Tjk4KKQSWvp JRBQPwhbH+QraEJcovkoZvpvBX0UAtOP66mL438FJEyGMeCK5BPwnguDiD3w= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:622:b0:679:e7b2:9fc8 with SMTP id 006d021491bc7-679e7b2a0c2mr2993612eaf.1.1772086700739; Wed, 25 Feb 2026 22:18:20 -0800 (PST) Date: Wed, 25 Feb 2026 22:18:20 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <699fe5ac.050a0220.2fcbed.0003.GAE@google.com> Subject: [syzbot] [f2fs?] INFO: task hung in f2fs_fallocate (6) From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: d4906ae14a5f Add linux-next specific files for 20260220 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=13f24006580000 kernel config: https://syzkaller.appspot.com/x/.config?x=cdf9388b212a2b28 dashboard link: https://syzkaller.appspot.com/bug?extid=73d18077a2323a1fdb5e compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1312395a580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a4855a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/1537e9684d19/disk-d4906ae1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dd6c9977a9cf/vmlinux-d4906ae1.xz kernel image: https://storage.googleapis.com/syzbot-assets/f1d85a2d6c78/bzImage-d4906ae1.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/2471b6f6a299/mount_0.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=149a0202580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+73d18077a2323a1fdb5e@syzkaller.appspotmail.com INFO: task syz.1.18:6046 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.18 state:D stack:28832 pid:6046 tgid:6042 ppid:6019 task_flags:0x400040 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x1585/0x5340 kernel/sched/core.c:6907 __schedule_loop kernel/sched/core.c:6989 [inline] schedule+0x164/0x360 kernel/sched/core.c:7004 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7061 rwsem_down_write_slowpath+0x899/0x1040 kernel/locking/rwsem.c:1185 __down_write_common kernel/locking/rwsem.c:1317 [inline] __down_write kernel/locking/rwsem.c:1326 [inline] down_write+0x1bc/0x200 kernel/locking/rwsem.c:1591 inode_lock include/linux/fs.h:1028 [inline] f2fs_fallocate+0x24e/0x9b0 fs/f2fs/file.c:2013 vfs_fallocate+0x669/0x7e0 fs/open.c:340 ksys_fallocate fs/open.c:364 [inline] __do_sys_fallocate fs/open.c:369 [inline] __se_sys_fallocate fs/open.c:367 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:367 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa61c59c629 RSP: 002b:00007fa61d448028 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fa61c816090 RCX: 00007fa61c59c629 RDX: 0000000000004000 RSI: 0000000000000008 RDI: 0000000000000004 RBP: 00007fa61c632b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa61c816128 R14: 00007fa61c816090 R15: 00007ffcfdb9b178 Showing all locks held in the system: --- 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