Aug  5 14:10:36 ubuntu-armhf kernel: [  154.680381] CAUTION: musb: Babble Interrupt Occurred
Aug  5 14:10:36 ubuntu-armhf kernel: [  154.804189] gadgetfs: connected
Aug  5 14:10:36 ubuntu-armhf kernel: [  154.809964] CAUTION: musb: Babble Interrupt Occurred
Aug  5 14:10:36 ubuntu-armhf kernel: [  154.810020] gadgetfs: disconnected
Aug  5 14:10:36 ubuntu-armhf kernel: [  154.952392] gadgetfs: connected
Aug  5 14:10:36 [  154.965133] BUG: spinlock recursion on CPU#0, usb/674
[  154.971010]  lock: 0xdf3f5800, .magic: dead4ead, .owner: usb/674, .owner_cpu: 0
[  154.978774] [<c0013558>] (unwind_backtrace+0x0/0xe0) from [<c02fbd10>] (do_raw_spin_lock+0x48/0x164)
[  154.988431] [<c02fbd10>] (do_raw_spin_lock+0x48/0x164) from [<c05ec664>] (_raw_spin_lock_irqsave+0x10/0x18)
[  154.998740] [<c05ec664>] (_raw_spin_lock_irqsave+0x10/0x18) from [<bf000318>] (ep0_complete+0x18/0xbc [gadgetfs])
[  155.009590] [<bf000318>] (ep0_complete+0x18/0xbc [gadgetfs]) from [<c041cd8c>] (musb_g_giveback+0x60/0x78)
[  155.019775] [<c041cd8c>] (musb_g_giveback+0x60/0x78) from [<c041baf4>] (musb_g_ep0_queue+0xf4/0x13c)
[  155.029424] [<c041baf4>] (musb_g_ep0_queue+0xf4/0x13c) from [<bf001310>] (ep0_read+0xb8/0x4c4 [gadgetfs])
[  155.039540] [<bf001310>] (ep0_read+0xb8/0x4c4 [gadgetfs]) from [<c00f55e8>] (vfs_read+0xa4/0x174)
[  155.048902] [<c00f55e8>] (vfs_read+0xa4/0x174) from [<c00f56f0>] (sys_read+0x38/0x64)
[  155.057177] [<c00f56f0>] (sys_read+0x38/0x64) from [<c000d880>] (ret_fast_syscall+0x0/0x30)
[  163.641386] BUG: spinlock lockup suspected on CPU#0, usb/674
[  163.647357]  lock: 0xdf3f5800, .magic: dead4ead, .owner: usb/674, .owner_cpu: 0
[  163.655081] [<c0013558>] (unwind_backtrace+0x0/0xe0) from [<c02fbd7c>] (do_raw_spin_lock+0xb4/0x164)
[  163.664718] [<c02fbd7c>] (do_raw_spin_lock+0xb4/0x164) from [<c05ec664>] (_raw_spin_lock_irqsave+0x10/0x18)
[  163.675007] [<c05ec664>] (_raw_spin_lock_irqsave+0x10/0x18) from [<bf000318>] (ep0_complete+0x18/0xbc [gadgetfs])
[  163.685842] [<bf000318>] (ep0_complete+0x18/0xbc [gadgetfs]) from [<c041cd8c>] (musb_g_giveback+0x60/0x78)
[  163.696023] [<c041cd8c>] (musb_g_giveback+0x60/0x78) from [<c041baf4>] (musb_g_ep0_queue+0xf4/0x13c)
[  163.705670] [<c041baf4>] (musb_g_ep0_queue+0xf4/0x13c) from [<bf001310>] (ep0_read+0xb8/0x4c4 [gadgetfs])
[  163.715775] [<bf001310>] (ep0_read+0xb8/0x4c4 [gadgetfs]) from [<c00f55e8>] (vfs_read+0xa4/0x174)
[  163.725135] [<c00f55e8>] (vfs_read+0xa4/0x174) from [<c00f56f0>] (sys_read+0x38/0x64)
[  163.733399] [<c00f56f0>] (sys_read+0x38/0x64) from [<c000d880>] (ret_fast_syscall+0x0/0x30)