From: Ross Zwisler <ross.zwisler@linux.intel.com>
To: Jan Kara <jack@suse.cz>
Cc: kernel test robot <xiaolong.ye@intel.com>,
"Theodore Ts'o" <tytso@mit.edu>,
LKML <linux-kernel@vger.kernel.org>,
linux-ext4@vger.kernel.org, lkp@01.org,
Ross Zwisler <ross.zwisler@linux.intel.com>,
linux-nvdimm@ml01.01.org, Dave Chinner <david@fromorbit.com>
Subject: Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c
Date: Mon, 12 Dec 2016 15:13:29 -0700 [thread overview]
Message-ID: <20161212221329.GB3622@linux.intel.com> (raw)
In-Reply-To: <20161212163518.GA20728@quack2.suse.cz>
On Mon, Dec 12, 2016 at 05:35:18PM +0100, Jan Kara wrote:
> On Mon 12-12-16 18:13:21, kernel test robot wrote:
> > FYI, we noticed the following commit:
> >
> > commit: e2ae766c1b030271b5099b25674e2131d1d1e8c1 ("ext4: convert DAX faults to iomap infrastructure")
> > https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
> >
> > in testcase: nvml
> > with following parameters:
> >
> > group: vmem
> > test: pmem
> > nr_pmem: 1
> > fs: ext4
> > mount_option: dax
> >
> >
> >
> > on test machine: 64 threads Intel(R) Xeon(R) CPU E5-4650 0 @ 2.70GHz with 64G memory
> >
> > caused below changes:
> >
> >
> > +------------------------------------------------+------------+------------+
> > | | 96f8ba3dd6 | e2ae766c1b |
> > +------------------------------------------------+------------+------------+
> > | boot_successes | 2 | 2 |
> > | boot_failures | 2 | 2 |
> > | BUG:kernel_hang_in_test_stage | 2 | |
> > | WARNING:at_fs/sysfs/dir.c:#sysfs_warn_dup | 0 | 2 |
> > | calltrace:parport_pc_init | 0 | 2 |
> > | calltrace:SyS_finit_module | 0 | 2 |
> > | WARNING:at_lib/kobject.c:#kobject_add_internal | 0 | 2 |
> > +------------------------------------------------+------------+------------+
> >
> >
> >
> > user :notice: [ 325.592182] vmem_aligned_alloc/TEST1: SETUP (check/pmem/debug)
> >
> > user :notice: [ 325.603973] vmem_aligned_alloc/TEST1: START: vmem_aligned_alloc
> > kern :err : [ 325.608906] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:51
> > kern :err : [ 325.608908] in_atomic(): 1, irqs_disabled(): 0, pid: 24813, name: vmem_aligned_al
> > kern :warn : [ 325.608914] CPU: 44 PID: 24813 Comm: vmem_aligned_al Tainted: G O 4.9.0-rc4-00045-ge2ae766 #1
> > kern :warn : [ 325.608916] Hardware name: Intel Corporation LH Pass/S4600LH...., BIOS SE5C600.86B.99.02.1047.032320122259 03/23/2012
> > kern :warn : [ 325.608922] ffffc9002c1f7be0
> > kern :warn : [ 325.608923] ffffffff81466af9
> > kern :warn : [ 325.608924] ffff880fea2425c0
>
> I think this is actually a bug introduced by Ross' PMD support. Attached
> patch should fix it. Ross, can you check it please?
Yep, that patch looks good. You can add:
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
And I turned on CONFIG_DEBUG_ATOMIC_SLEEP in my test config. :)
next prev parent reply other threads:[~2016-12-12 22:13 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20161212101321.GA37214@inn.lkp.intel.com>
2016-12-12 16:35 ` [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Jan Kara
2016-12-12 22:13 ` Ross Zwisler [this message]
2016-12-12 22:37 ` Theodore Ts'o
2016-12-12 22:48 ` Ross Zwisler
2016-12-12 23:00 ` Theodore Ts'o
2016-12-12 23:13 ` Ross Zwisler
2016-12-13 8:47 ` Jan Kara
2016-12-13 1:27 ` [LKP] " Huang, Ying
2016-12-13 11:42 ` Jan Kara
2016-12-14 3:11 ` Huang, Ying
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