linux-kernel - [lkp] [fs] 148e828376: WARNING: CPU: 0 PID: 407 at fs/open.c:719 do_dentry

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Date:   Sun, 9 Oct 2016 15:04:34 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Calvin Owens <calvinowens@...com>
Cc:     Jeff Layton <jlayton@...chiereds.net>,
        "J. Bruce Fields" <bfields@...ldses.org>,
        Rusty Russell <rusty@...tcorp.com.au>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-team@...com, Calvin Owens <calvinowens@...com>, lkp@...org
Subject: [lkp] [fs]  148e828376: WARNING: CPU: 0 PID: 407 at fs/open.c:719
 do_dentry_open+0x210/0x350


FYI, we noticed the following commit:

https://github.com/0day-ci/linux Calvin-Owens/fs-Assert-on-module-file_operations-without-an-owner/20161008-045103
commit 148e828376ac797fe7b6a9b36301e4d109db97b7 ("fs: Assert on module file_operations without an owner")

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 1G

caused below changes:


+----------------------------------------------------------------------------+------------+------------+
|                                                                            | 2ab704a47e | 148e828376 |
+----------------------------------------------------------------------------+------------+------------+
| boot_successes                                                             | 2          | 5          |
| boot_failures                                                              | 4          | 13         |
| BUG:kernel_hang_in_test_stage                                              | 2          |            |
| WARNING:at_fs/sysfs/dir.c:#sysfs_warn_dup                                  | 2          | 4          |
| calltrace:parport_pc_init                                                  | 2          | 4          |
| calltrace:SyS_finit_module                                                 | 2          | 4          |
| WARNING:at_lib/kobject.c:#kobject_add_internal                             | 2          | 4          |
| WARNING:at_fs/open.c:#do_dentry_open                                       | 0          | 11         |
| calltrace:SyS_open                                                         | 0          | 11         |
| Kernel_panic-not_syncing:VFS:Unable_to_mount_root_fs_on_unknown-block(#,#) | 0          | 2          |
| calltrace:prepare_namespace                                                | 0          | 2          |
+----------------------------------------------------------------------------+------------+------------+



[    5.032473] 
[    5.039317] -1G-17/boot-1-debian-x86_64-2016-08-31.cgz-148e828376ac797fe7b6a9b36301e4d109db97b7-20161008-50461-l76q6n-0.yaml&job_state=running -o /dev/null
[    5.323019] ------------[ cut here ]------------
[    5.324673] WARNING: CPU: 0 PID: 407 at fs/open.c:719 do_dentry_open+0x210/0x350
[    5.327689] No fops owner at ffffffffa01d5a00 in [nfsv4]
[    5.329424] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver sr_mod cdrom sg ata_generic pata_acpi sb_edac edac_core crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel ppdev aesni_intel ata_piix lrw gf128mul glue_helper ablk_helper cryptd snd_pcm snd_timer snd soundcore pcspkr libata serio_raw i2c_piix4 parport_pc parport floppy acpi_cpufreq ip_tables
[    5.342863] CPU: 0 PID: 407 Comm: wrapper Not tainted 4.8.0-09940-g148e828 #13
[    5.345751] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[    5.348544]  ffffc9000072bb38 ffffffff81454e59 ffffc9000072bb88 0000000000000000
[    5.351410]  ffffc9000072bb78 ffffffff8107ff5b 000002cf3f41c9c0 ffff88003f962800
[    5.354180]  0000000000000000 ffff88003f962810 ffff88003f2fbcc0 ffff88003f6ae1b8
[    5.356944] Call Trace:
[    5.357991]  [<ffffffff81454e59>] dump_stack+0x63/0x8a
[    5.359462]  [<ffffffff8107ff5b>] __warn+0xcb/0xf0
[    5.360872]  [<ffffffff8107ffcf>] warn_slowpath_fmt+0x4f/0x60
[    5.362443]  [<ffffffff8120e0e0>] do_dentry_open+0x210/0x350
[    5.364427]  [<ffffffff813016e0>] ? nfs_force_lookup_revalidate+0x20/0x20
[    5.366545]  [<ffffffff8120e24f>] finish_open+0x2f/0x40
[    5.368358]  [<ffffffff81305422>] nfs_atomic_open+0x1e2/0x570
[    5.370272]  [<ffffffff81220924>] path_openat+0xd24/0x13e0
[    5.372150]  [<ffffffff811b81b6>] ? unmap_page_range+0x6c6/0x910
[    5.374112]  [<ffffffff811b72ec>] ? do_wp_page+0xfc/0x830
[    5.375989]  [<ffffffff8122217e>] do_filp_open+0x7e/0xe0
[    5.377693]  [<ffffffff8122119f>] ? getname_flags+0x4f/0x1f0
[    5.379472]  [<ffffffff81230bfa>] ? __alloc_fd+0xca/0x180
[    5.381189]  [<ffffffff8120f853>] do_sys_open+0x123/0x200
[    5.382926]  [<ffffffff8120f94e>] SyS_open+0x1e/0x20
[    5.384577]  [<ffffffff81942577>] entry_SYSCALL_64_fastpath+0x1a/0xa9
[    5.386705] ---[ end trace 6c0092634b9a9a26 ]---
[    5.386705] ---[ end trace 6c0092634b9a9a26 ]---





Thanks,
Xiaolong

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