(cc'ing Hannes and quoting the whole message)
Hannes, this is caused by 8a97712e5314aefe16b3ffb4583a34deaa49de04
("scsi: make 'state' device attribute pollable").
Thanks.
On Wed, Oct 18, 2017 at 04:56:05PM +0800, Yu Chen wrote:
> I saw the following backtrace when running some benchmarks, it might
> not be critical, but it is even better we can get rid of this warning : )
>
>
> [ 318.808335] BUG: sleeping function called from invalid context at
> kernel/locking/mutex.c:238
> [ 318.818779] in_atomic(): 1, irqs_disabled(): 1, pid: 1144, name: scsi_eh_7
> [ 318.826248] CPU: 5 PID: 1144 Comm: scsi_eh_7 Tainted: G O
> 4.14.0-rc4-00128-g30e9e23 #2
> [ 318.835882] Call Trace:
> [ 318.838973] dump_stack+0x63/0x86
> [ 318.842882] ___might_sleep+0xf1/0x110
> [ 318.847214] __might_sleep+0x4a/0x80
> [ 318.851368] mutex_lock+0x20/0x50
> [ 318.855247] kernfs_find_and_get_ns+0x23/0x60
> [ 318.860158] sysfs_notify+0x77/0x90
> [ 318.864237] scsi_device_set_state+0x63/0x150
> [ 318.869180] ata_scsi_offline_dev+0x1c/0x30 [libata]
> [ 318.874696] ata_eh_detach_dev+0x3b/0xb0 [libata]
> [ 318.879929] ata_eh_schedule_probe+0x59/0x1c0 [libata]
> [ 318.885590] ata_eh_recover+0x108/0x12d0 [libata]
> [ 318.890807] ? ahci_pmp_attach+0x70/0x70 [libahci]
> [ 318.896105] ? ahci_do_hardreset+0x110/0x110 [libahci]
> [ 318.901744] ? ahci_do_softreset+0x210/0x210 [libahci]
> [ 318.907371] ? ata_phys_link_offline+0x30/0x30 [libata]
> [ 318.913123] ? ata_eh_report+0x34f/0x850 [libata]
> [ 318.918345] sata_pmp_eh_recover+0xb7/0xa00 [libata]
> [ 318.923818] ? ata_eh_report+0x6e6/0x850 [libata]
> [ 318.929028] sata_pmp_error_handler+0x22/0x30 [libata]
> [ 318.934631] ahci_error_handler+0x1d/0x70 [libahci]
> [ 318.939968] ata_scsi_port_error_handler+0x430/0x720 [libata]
> [ 318.946167] ? ata_scsi_cmd_error_handler+0xe9/0x140 [libata]
> [ 318.952368] ata_scsi_error+0x86/0xb0 [libata]
> [ 318.957260] ? scsi_error_handler+0x38/0x5d0
> [ 318.961965] scsi_error_handler+0xe7/0x5d0
> [ 318.966499] kthread+0x114/0x150
> [ 318.970155] ? scsi_eh_get_sense+0x280/0x280
> [ 318.974848] ? kthread_create_on_node+0x40/0x40
> [ 318.979798] ret_from_fork+0x25/0x30
> [ 318.983813] ata8: hard resetting link
>
> Thanks,
> Yu
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tejun
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