From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) (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 2DA42255222 for ; Thu, 21 Aug 2025 13:48:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.208 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755784114; cv=none; b=fP6e2xG9s659OKpwsrIdaKjxL0ukrx1B2wRpuO03UMJIeBZxDa2XUddPdgZoMzLPslFFOIDmUETYYKtYJSRPJxb7EAWMQqo5mSDl76+xEn48aP3/a78KXmhYdGzq7/vJtI8Xhl5/F63GbhU8jo07kK80DBSGa2lBEqIE8ID/AmI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755784114; c=relaxed/simple; bh=QPzLBIr4gsTUMqIIsAPK4l2yxUehyDvGERyI2n0otHc=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=ZZ3QVdv41glMj+AabLOcqnvIqdgaUFcY5N0Opj45N7AuyMXDeZaqqOnVEcskIz0XI/KLDkWDp+wf8NaC6xVUiOPwxANvATd3FRBem+rPtA0mlEWuU7Vd5iy1eT6Vs2JpMCHXRDG597m8iV3rR9szs6BbXoACGO4t6+Tb9P6Vnwk= 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=209.85.166.208 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-f208.google.com with SMTP id e9e14a558f8ab-3e6649d783bso22761885ab.3 for ; Thu, 21 Aug 2025 06:48:32 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755784112; x=1756388912; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=dM39bhFfKQvEU5ZVLy2qtymq680cCKn9jGpbpwOpVGw=; b=eVAb48ZxxMkPc3o3PLrv5EWZTJBYwjQPK5JiprSeJCYsjbAjEz7UryW6vAyiYz+3yP Qs0xkbY7+4D+F3mZEh2af7e+Wn1lva5HHSyFBF6dDTODrgLpz6pwotxTu7Fvp6WYdtr8 4V6VMHtgyylNqMIEaNspo/5u4RQnWumkdF58fZSBN5Ni3Q0OgJh/B3sjeVdpVlzrfVr2 kbNQfVfwLe3T93poweKVTLO/a3vFQ+8C/xIB5zPkaHhicwbTNqkdizOU7cGfyxWApuTW xB6pYUWZgj7/MNfFNZvziVgSoSVj1vyl8CFV3eGHYjr0tbOFTlY3d1wj7VO2Xu53R+9B otMA== X-Forwarded-Encrypted: i=1; AJvYcCXNdedSQK9iI7tlr8nIBGAtROJPnTBPQMohtzHvK4MFYZNUHoq+HDUWmaQBVLXNQ2Gc1GVlAuBz7Eht1/w=@vger.kernel.org X-Gm-Message-State: AOJu0Yxe73fHmc9uz4tlfajQRsfI19vm9/9hxTC4DrZhXPaZqkQfrCrt Eh6Oq9yK8XMqsv1fy/Tb+Ei2y6+ZCN1TrXGlweQGOYCvJwO0aSQtepRMWSS0PpgCc+oNFJ4f1uB WMqS1cjBXlEc94Ecr5+yH7dmHQiwWnw5mf+ZnUUPvIbfXDZK9hPSzd6L4Hr8= X-Google-Smtp-Source: AGHT+IHjBEDyzI2bgi3qzYUQK4qU2RDA4pJPjPClRn2+OHiizIpWwkD/GAWwaEm85R+bM7hcfKm6bCs4uMSwbqjg4MKjBCcNfbOT Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:4515:10b0:3e8:cd52:4ccf with SMTP id e9e14a558f8ab-3e8cd526232mr6309365ab.18.1755784112235; Thu, 21 Aug 2025 06:48:32 -0700 (PDT) Date: Thu, 21 Aug 2025 06:48:32 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68a723b0.050a0220.3d78fd.0029.GAE@google.com> Subject: [syzbot] [ocfs2?] INFO: task hung in ocfs2_page_mkwrite (2) From: syzbot To: jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 99bade344cfa Merge tag 'rust-fixes-6.17' of git://git.kern.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=14222442580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ce98061fb8ee27bc dashboard link: https://syzkaller.appspot.com/bug?extid=541dcc6ee768f77103e7 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d2faf0580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11d2faf0580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/9d660b67f436/disk-99bade34.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0bfb9fd6d898/vmlinux-99bade34.xz kernel image: https://storage.googleapis.com/syzbot-assets/387d6017422c/bzImage-99bade34.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/d1682febf5d8/mount_0.gz fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=12d2faf0580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+541dcc6ee768f77103e7@syzkaller.appspotmail.com INFO: task syz-executor241:5854 blocked for more than 143 seconds. Not tainted 6.17.0-rc1-syzkaller-00214-g99bade344cfa #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor241 state:D stack:21256 pid:5854 tgid:5854 ppid:5853 task_flags:0x400140 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5357 [inline] __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0x165/0x360 kernel/sched/core.c:7058 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115 rwsem_down_write_slowpath+0x872/0xfe0 kernel/locking/rwsem.c:1185 __down_write_common kernel/locking/rwsem.c:1317 [inline] __down_write kernel/locking/rwsem.c:1326 [inline] down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591 ocfs2_page_mkwrite+0x2ff/0xc40 fs/ocfs2/mmap.c:142 do_page_mkwrite+0x14d/0x310 mm/memory.c:3361 wp_page_shared mm/memory.c:3762 [inline] do_wp_page+0x268d/0x5800 mm/memory.c:3981 handle_pte_fault mm/memory.c:6068 [inline] __handle_mm_fault+0x1033/0x5440 mm/memory.c:6195 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6364 do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] RIP: 0010:raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline] RIP: 0010:_inline_copy_to_user include/linux/uaccess.h:197 [inline] RIP: 0010:_copy_to_user+0x85/0xb0 lib/usercopy.c:26 Code: e8 00 bc f7 fc 4d 39 fc 72 3d 4d 39 ec 77 38 e8 91 b9 f7 fc 4c 89 f7 89 de e8 47 25 5b fd 0f 01 cb 4c 89 ff 48 89 d9 4c 89 f6 a4 0f 1f 00 48 89 cb 0f 01 ca 48 89 d8 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc9000403f950 EFLAGS: 00050256 RAX: ffffffff84c7f101 RBX: 0000000000000038 RCX: 0000000000000038 RDX: 0000000000000000 RSI: ffffc9000403f9e0 RDI: 0000200000000060 RBP: ffffc9000403fa90 R08: ffffc9000403fa17 R09: 1ffff92000807f42 R10: dffffc0000000000 R11: fffff52000807f43 R12: 0000200000000098 R13: 00007ffffffff000 R14: ffffc9000403f9e0 R15: 0000200000000060 copy_to_user include/linux/uaccess.h:225 [inline] fiemap_fill_next_extent+0x1c0/0x390 fs/ioctl.c:145 ocfs2_fiemap+0x888/0xc90 fs/ocfs2/extent_map.c:806 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1173/0x1430 fs/ioctl.c:532 __do_sys_ioctl fs/ioctl.c:596 [inline] __se_sys_ioctl+0x82/0x170 fs/ioctl.c:584 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5f13850fd9 RSP: 002b:00007ffe3b3518b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f5f13850fd9 RDX: 0000200000000040 RSI: 00000000c020660b RDI: 0000000000000004 RBP: 6165627472616568 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe3b3518f0 R13: 00007ffe3b351b18 R14: 431bde82d7b634db R15: 00007f5f1389a03b INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.17.0-rc1-syzkaller-00214-g99bade344cfa #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline] watchdog+0xf93/0xfe0 kernel/hung_task.c:491 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.17.0-rc1-syzkaller-00214-g99bade344cfa #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82 Code: 3e dd 96 f5 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 c7 0e 00 f3 0f 1e fa fb f4 13 dd 96 f5 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffffff8de07d80 EFLAGS: 000002c2 RAX: 67466ec3a757a800 RBX: ffffffff81968308 RCX: 67466ec3a757a800 RDX: 0000000000000001 RSI: ffffffff8be334e0 RDI: ffffffff81968308 RBP: ffffffff8de07eb8 R08: ffff8880b8632f9b R09: 1ffff110170c65f3 R10: dffffc0000000000 R11: ffffed10170c65f4 R12: ffffffff8fa38130 R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a20 FS: 0000000000000000(0000) GS:ffff888125c1b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005559e8184660 CR3: 000000000df36000 CR4: 0000000000350ef0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline] default_idle+0x13/0x20 arch/x86/kernel/process.c:757 default_idle_call+0x74/0xb0 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:190 [inline] do_idle+0x1e8/0x510 kernel/sched/idle.c:330 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:428 rest_init+0x2de/0x300 init/main.c:744 start_kernel+0x3a9/0x410 init/main.c:1097 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:307 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:288 common_startup_64+0x13e/0x147 --- 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