Jan Kara <jack@xxxxxxx> writes:
> 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?
Hi, Jan
Could you provide a git tree commit for me to test it? If you want it
to be tested by 0day.
Best Regards,
Huang, Ying
> Honza
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