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Groups > linux.kernel > #1540436
| From | Jan Kara <jack@suse.cz> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c |
| Date | 2016-12-12 17:40 +0100 |
| Message-ID | <sNBNT-6Du-11@gated-at.bofh.it> (permalink) |
| References | <sNBNT-6Du-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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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?
Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
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Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Jan Kara <jack@suse.cz> - 2016-12-12 17:40 +0100
Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-12-12 23:20 +0100
Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Theodore Ts'o <tytso@mit.edu> - 2016-12-12 23:40 +0100
Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-12-12 23:50 +0100
Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Theodore Ts'o <tytso@mit.edu> - 2016-12-13 00:10 +0100
Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Ross Zwisler <ross.zwisler@linux.intel.com> - 2016-12-13 00:20 +0100
Re: [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Jan Kara <jack@suse.cz> - 2016-12-13 09:50 +0100
Re: [LKP] [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c "Huang\, Ying" <ying.huang@intel.com> - 2016-12-13 02:30 +0100
Re: [LKP] [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c Jan Kara <jack@suse.cz> - 2016-12-13 12:50 +0100
Re: [LKP] [ext4] e2ae766c1b: BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/rwsem.c "Huang\, Ying" <ying.huang@intel.com> - 2016-12-14 04:20 +0100
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