[  109.250000] g_ffs: read descriptors
[  109.255000] g_ffs: read strings
[  109.275000]  gadget: g_ffs ready
[  109.285000] s3c-hsotg s3c-hsotg: bound driver g_ffs
[  109.290000]
[  109.290000] =========================================================
[  109.295000] [ INFO: possible irq lock inversion dependency detected ]
[  109.305000] 3.8.0-dirty #199 Not tainted
[  109.310000] ---------------------------------------------------------
[  109.315000] swapper/0/0 just changed the state of lock:
[  109.320000]  (&(&hsotg->lock)->rlock){-.....}, at: [<c029d35c>] s3c_hsotg_ir8
[  109.325000] but this lock took another, HARDIRQ-unsafe lock in the past:
[  109.335000]  (clocks_mutex){+.+...}

and interrupts could create inverse lock ordering between them.

[  109.345000]
[  109.345000] other info that might help us debug this:
[  109.350000]  Possible interrupt unsafe locking scenario:
[  109.350000]
[  109.355000]        CPU0                    CPU1
[  109.360000]        ----                    ----
[  109.365000]   lock(clocks_mutex);
[  109.370000]                                local_irq_disable();
[  109.375000]                                lock(&(&hsotg->lock)->rlock);
[  109.380000]                                lock(clocks_mutex);
[  109.390000]   <Interrupt>
[  109.390000]     lock(&(&hsotg->lock)->rlock);
[  109.395000]
[  109.395000]  *** DEADLOCK ***
[  109.395000]
[  109.400000] no locks held by swapper/0/0.
[  109.405000]
[  109.405000] the shortest dependencies between 2nd lock and 1st lock:
[  109.410000]  -> (clocks_mutex){+.+...} ops: 221 {
[  109.415000]     HARDIRQ-ON-W at:
[  109.420000]                       [<c0064b08>] __lock_acquire+0x560/0xa94
[  109.425000]                       [<c0066684>] lock_acquire+0x60/0x74
[  109.435000]                       [<c045b010>] mutex_lock_nested+0x54/0x3a8
[  109.440000]                       [<c0310888>] clk_get_sys+0x24/0xf4
[  109.445000]                       [<c059994c>] exynos_pm_drvinit+0x2c/0x64
[  109.455000]                       [<c05918e0>] do_one_initcall+0x50/0x164
[  109.460000]                       [<c0591b0c>] kernel_init_freeable+0x118/0xc
[  109.470000]                       [<c0451494>] kernel_init+0x8/0xe4
[  109.475000]                       [<c000e1b0>] ret_from_fork+0x14/0x24
[  109.480000]     SOFTIRQ-ON-W at:
[  109.485000]                       [<c0064b2c>] __lock_acquire+0x584/0xa94
[  109.490000]                       [<c0066684>] lock_acquire+0x60/0x74
[  109.495000]                       [<c045b010>] mutex_lock_nested+0x54/0x3a8
[  109.505000]                       [<c0310888>] clk_get_sys+0x24/0xf4
[  109.510000]                       [<c059994c>] exynos_pm_drvinit+0x2c/0x64
[  109.515000]                       [<c05918e0>] do_one_initcall+0x50/0x164
[  109.525000]                       [<c0591b0c>] kernel_init_freeable+0x118/0xc
[  109.530000]                       [<c0451494>] kernel_init+0x8/0xe4
[  109.535000]                       [<c000e1b0>] ret_from_fork+0x14/0x24
[  109.545000]     INITIAL USE at:
[  109.545000]                      [<c0064840>] __lock_acquire+0x298/0xa94
[  109.555000]                      [<c0066684>] lock_acquire+0x60/0x74
[  109.560000]                      [<c045b010>] mutex_lock_nested+0x54/0x3a8
[  109.565000]                      [<c0310998>] clkdev_add+0x1c/0x3c
[  109.575000]                      [<c001fcd4>] s3c24xx_register_clock+0x34/0x0
[  109.580000]                      [<c059b3b0>] s3c24xx_register_baseclocks+0x4
[  109.590000]                      [<c0598d1c>] exynos4_init_clocks+0x1c/0x80
[  109.595000]                      [<c059ae00>] s3c24xx_init_clocks+0x44/0x54
[  109.600000]                      [<c059a848>] origen_map_io+0x1c/0x34
[  109.610000]                      [<c0597d6c>] paging_init+0x5ec/0x798
[  109.615000]                      [<c0594c00>] setup_arch+0x3c8/0x65c
[  109.620000]                      [<c0591588>] start_kernel+0x7c/0x384
[  109.625000]                      [<40008078>] 0x40008078
[  109.630000]   }
[  109.635000]   ... key      at: [<c0624f7c>] clocks_mutex+0x38/0x48
[  109.640000]   ... acquired at:
[  109.645000]    [<c006498c>] __lock_acquire+0x3e4/0xa94
[  109.650000]    [<c0066684>] lock_acquire+0x60/0x74
[  109.655000]    [<c045b010>] mutex_lock_nested+0x54/0x3a8
[  109.660000]    [<c0310888>] clk_get_sys+0x24/0xf4
[  109.665000]    [<c001ede0>] exynos4210_usb_phy_clkset+0x10/0x164
[  109.670000]    [<c001f128>] s5p_usb_phy_init+0x1f4/0x2b8
[  109.675000]    [<c029ce78>] s3c_hsotg_pullup+0x48/0x98
[  109.680000]    [<c0297e84>] usb_gadget_probe_driver+0x160/0x188
[  109.685000]    [<c02a02cc>] ffs_ep0_write+0x1f8/0x630
[  109.690000]    [<c00c1c1c>] vfs_write+0x9c/0x140
[  109.695000]    [<c00c1d6c>] sys_write+0x3c/0x70
[  109.700000]    [<c000e100>] ret_fast_syscall+0x0/0x3c
[  109.705000]
[  109.705000] -> (&(&hsotg->lock)->rlock){-.....} ops: 2 {
[  109.710000]    IN-HARDIRQ-W at:
[  109.715000]                     [<c0064c14>] __lock_acquire+0x66c/0xa94
[  109.720000]                     [<c0066684>] lock_acquire+0x60/0x74
[  109.730000]                     [<c045de94>] _raw_spin_lock+0x3c/0x4c
[  109.735000]                     [<c029d35c>] s3c_hsotg_irq+0x28/0x7b8
[  109.740000]                     [<c0071914>] handle_irq_event_percpu+0x50/0x8
[  109.750000]                     [<c0071a98>] handle_irq_event+0x3c/0x5c
[  109.755000]                     [<c0074364>] handle_fasteoi_irq+0x7c/0x138
[  109.760000]                     [<c00712b8>] generic_handle_irq+0x24/0x38
[  109.770000]                     [<c000efc4>] handle_IRQ+0x38/0x94
[  109.775000]                     [<c000855c>] gic_handle_irq+0x34/0x68
[  109.780000]                     [<c000dcc4>] __irq_svc+0x44/0x78
[  109.785000]                     [<c000f248>] default_idle+0x20/0x30
[  109.795000]                     [<c000f378>] cpu_idle+0x48/0xf4
[  109.800000]                     [<c059183c>] start_kernel+0x330/0x384
[  109.805000]    INITIAL USE at:
[  109.810000]                    [<c0064840>] __lock_acquire+0x298/0xa94
[  109.815000]                    [<c0066684>] lock_acquire+0x60/0x74
[  109.820000]                    [<c045deec>] _raw_spin_lock_irqsave+0x48/0x5c
[  109.830000]                    [<c029ce4c>] s3c_hsotg_pullup+0x1c/0x98
[  109.835000]                    [<c0297e84>] usb_gadget_probe_driver+0x160/0x8
[  109.840000]                    [<c02a02cc>] ffs_ep0_write+0x1f8/0x630
[  109.850000]                    [<c00c1c1c>] vfs_write+0x9c/0x140
[  109.855000]                    [<c00c1d6c>] sys_write+0x3c/0x70
[  109.860000]                    [<c000e100>] ret_fast_syscall+0x0/0x3c
[  109.865000]  }
[  109.870000]  ... key      at: [<c0b43060>] __key.23369+0x0/0x8
[  109.875000]  ... acquired at:
[  109.875000]    [<c00626f4>] check_usage_forwards+0xa0/0x10c
[  109.880000]    [<c00640ec>] mark_lock+0x1c0/0x67c
[  109.885000]    [<c0064c14>] __lock_acquire+0x66c/0xa94
[  109.890000]    [<c0066684>] lock_acquire+0x60/0x74
[  109.895000]    [<c045de94>] _raw_spin_lock+0x3c/0x4c
[  109.900000]    [<c029d35c>] s3c_hsotg_irq+0x28/0x7b8
[  109.905000]    [<c0071914>] handle_irq_event_percpu+0x50/0x198
[  109.910000]    [<c0071a98>] handle_irq_event+0x3c/0x5c
[  109.920000]    [<c0074364>] handle_fasteoi_irq+0x7c/0x138
[  109.925000]    [<c00712b8>] generic_handle_irq+0x24/0x38
[  109.930000]    [<c000efc4>] handle_IRQ+0x38/0x94
[  109.935000]    [<c000855c>] gic_handle_irq+0x34/0x68
[  109.940000]    [<c000dcc4>] __irq_svc+0x44/0x78
[  109.940000]    [<c000f248>] default_idle+0x20/0x30
[  109.945000]    [<c000f378>] cpu_idle+0x48/0xf4
[  109.950000]    [<c059183c>] start_kernel+0x330/0x384
[  109.955000]
[  109.960000]
[  109.960000] stack backtrace:
[  109.960000] [<c00143d8>] (unwind_backtrace+0x0/0xf8) from [<c00625ec>] (prin)
[  109.970000] [<c00625ec>] (print_irq_inversion_bug+0x1a4/0x20c) from [<c00626)
[  109.980000] [<c00626f4>] (check_usage_forwards+0xa0/0x10c) from [<c00640ec>])
[  109.990000] [<c00640ec>] (mark_lock+0x1c0/0x67c) from [<c0064c14>] (__lock_a)
[  110.000000] [<c0064c14>] (__lock_acquire+0x66c/0xa94) from [<c0066684>] (loc)
[  110.010000] [<c0066684>] (lock_acquire+0x60/0x74) from [<c045de94>] (_raw_sp)
[  110.020000] [<c045de94>] (_raw_spin_lock+0x3c/0x4c) from [<c029d35c>] (s3c_h)
[  110.025000] [<c029d35c>] (s3c_hsotg_irq+0x28/0x7b8) from [<c0071914>] (handl)
[  110.035000] [<c0071914>] (handle_irq_event_percpu+0x50/0x198) from [<c0071a9)
[  110.045000] [<c0071a98>] (handle_irq_event+0x3c/0x5c) from [<c0074364>] (han)
[  110.055000] [<c0074364>] (handle_fasteoi_irq+0x7c/0x138) from [<c00712b8>] ()
[  110.065000] [<c00712b8>] (generic_handle_irq+0x24/0x38) from [<c000efc4>] (h)
[  110.075000] [<c000efc4>] (handle_IRQ+0x38/0x94) from [<c000855c>] (gic_handl)
[  110.080000] [<c000855c>] (gic_handle_irq+0x34/0x68) from [<c000dcc4>] (__irq)
[  110.090000] Exception stack(0xc05c7f58 to 0xc05c7fa0)
[  110.095000] 7f40:                                                       00001
[  110.105000] 7f60: 00000000 00000000 c05c6000 c05c6000 c062f648 c04616f8 c05c1
[  110.110000] 7f80: c05ec448 00000000 c0605854 c05c7fa0 c00654c4 c000f248 2000f
[  110.120000] [<c000dcc4>] (__irq_svc+0x44/0x78) from [<c000f248>] (default_id)
[  110.130000] [<c000f248>] (default_idle+0x20/0x30) from [<c000f378>] (cpu_idl)
[  110.135000] [<c000f378>] (cpu_idle+0x48/0xf4) from [<c059183c>] (start_kerne)
[  110.145000] s3c-hsotg s3c-hsotg: new device is high-speed
[  110.150000] s3c-hsotg s3c-hsotg: s3c_hsotg_irq: USBRst
[  110.160000] s3c-hsotg s3c-hsotg: GINTSTS_USBSusp
[  110.160000] s3c-hsotg s3c-hsotg: s3c_hsotg_rx_data: FIFO 8 bytes on ep0 but )
[  110.170000] s3c-hsotg s3c-hsotg: s3c_hsotg_irq: USBRst
[  110.175000] s3c-hsotg s3c-hsotg: s3c_hsotg_rx_data: FIFO 8 bytes on ep0 but )
[  110.185000] s3c-hsotg s3c-hsotg: new device is high-speed
[  110.190000] ------------[ cut here ]------------
[  110.195000] WARNING: at drivers/usb/gadget/s3c-hsotg.c:1464 s3c_hsotg_rx_dat)
[  110.205000] [<c00143d8>] (unwind_backtrace+0x0/0xf8) from [<c0023680>] (warn)
[  110.210000] [<c0023680>] (warn_slowpath_common+0x48/0x60) from [<c0023760>] )
[  110.220000] [<c0023760>] (warn_slowpath_null+0x1c/0x24) from [<c029c1f8>] (s)
[  110.230000] [<c029c1f8>] (s3c_hsotg_rx_data+0xe8/0x104) from [<c029da34>] (s)
[  110.240000] [<c029da34>] (s3c_hsotg_irq+0x700/0x7b8) from [<c0071914>] (hand)
[  110.250000] [<c0071914>] (handle_irq_event_percpu+0x50/0x198) from [<c0071a9)
[  110.260000] [<c0071a98>] (handle_irq_event+0x3c/0x5c) from [<c0074364>] (han)
[  110.270000] [<c0074364>] (handle_fasteoi_irq+0x7c/0x138) from [<c00712b8>] ()
[  110.280000] [<c00712b8>] (generic_handle_irq+0x24/0x38) from [<c000efc4>] (h)
[  110.290000] [<c000efc4>] (handle_IRQ+0x38/0x94) from [<c000855c>] (gic_handl)
[  110.295000] [<c000855c>] (gic_handle_irq+0x34/0x68) from [<c000dcc4>] (__irq)
[  110.305000] Exception stack(0xc05c7f58 to 0xc05c7fa0)
[  110.310000] 7f40:                                                       00001
[  110.320000] 7f60: 00000000 00000000 c05c6000 c05c6000 c062f648 c04616f8 c05c1
[  110.325000] 7f80: c05ec448 00000000 c0605854 c05c7fa0 c00654c4 c000f248 2000f
[  110.335000] [<c000dcc4>] (__irq_svc+0x44/0x78) from [<c000f248>] (default_id)
[  110.340000] [<c000f248>] (default_idle+0x20/0x30) from [<c000f378>] (cpu_idl)
[  110.350000] [<c000f378>] (cpu_idle+0x48/0xf4) from [<c059183c>] (start_kerne)
[  110.360000] ---[ end trace 13036207479db903 ]---
[  110.365000] s3c-hsotg s3c-hsotg: GINTSTS_USBSusp
[  110.370000] Unable to handle kernel paging request at virtual address 00ec000
[  110.375000] pgd = c0004000
[  110.380000] [00ec0090] *pgd=00000000
[  110.380000] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[  110.385000] CPU: 0    Tainted: G        W     (3.8.0-dirty #199)
[  110.395000] PC is at composite_suspend+0x88/0xa4
[  110.395000] LR is at composite_suspend+0x10/0xa4
[  110.400000] pc : [<c0298974>]    lr : [<c02988fc>]    psr: 60000193
[  110.400000] sp : c05c7e90  ip : c060bc40  fp : 00000001
[  110.415000] r10: c05ccf00  r9 : c05e7ff4  r8 : 00000067
[  110.420000] r7 : 00000c10  r6 : ed319488  r5 : ecbb2400  r4 : ed319410
[  110.425000] r3 : 00ec0080  r2 : 00000000  r1 : 00000001  r0 : ecbb2400
[  110.430000] Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kel
[  110.440000] Control: 10c5387d  Table: 6c56804a  DAC: 00000015
[  110.445000] Process swapper/0 (pid: 0, stack limit = 0xc05c6238)
[  110.450000] Stack: (0xc05c7e90 to 0xc05c8000)
[  110.455000] 7e80:                                     ed319410 0000000f 00000
[  110.465000] 7ea0: 00000102 00000004 c05c6000 ed31941c 00000001 ec84ea40 c05c0
[  110.470000] 7ec0: 00000000 00000067 c062f4be c05ccf00 00000001 c0071914 00000
[  110.480000] 7ee0: c05ccf50 c05ccf00 c05ccf50 ec84ea40 f8810000 c05c6000 412f8
[  110.490000] 7f00: 00000000 c0071a98 c05ccf00 c05ccf50 00000000 c0074364 c0078
[  110.495000] 7f20: 00000067 c00712b8 00000225 c000efc4 f881000c c05e8018 c05cc
[  110.505000] 7f40: c00654c4 c000f248 20000013 ffffffff c05c7f8c c000dcc4 00001
[  110.510000] 7f60: 00000000 00000000 c05c6000 c05c6000 c062f648 c04616f8 c05c1
[  110.520000] 7f80: c05ec448 00000000 c0605854 c05c7fa0 c00654c4 c000f248 2000f
[  110.530000] 7fa0: c000f228 c000f378 c05c6000 c05e811c c062f580 ffffffff c05b0
[  110.535000] 7fc0: 00000000 c059183c ffffffff ffffffff c05912e8 00000000 00008
[  110.545000] 7fe0: 10c5387d c05e7ff0 c05b7be4 c05ec43c 4000406a 40008078 00000
[  110.555000] [<c0298974>] (composite_suspend+0x88/0xa4) from [<c029d970>] (s3)
[  110.560000] [<c029d970>] (s3c_hsotg_irq+0x63c/0x7b8) from [<c0071914>] (hand)
[  110.570000] [<c0071914>] (handle_irq_event_percpu+0x50/0x198) from [<c0071a9)
[  110.580000] [<c0071a98>] (handle_irq_event+0x3c/0x5c) from [<c0074364>] (han)
[  110.590000] [<c0074364>] (handle_fasteoi_irq+0x7c/0x138) from [<c00712b8>] ()
[  110.600000] [<c00712b8>] (generic_handle_irq+0x24/0x38) from [<c000efc4>] (h)
[  110.610000] [<c000efc4>] (handle_IRQ+0x38/0x94) from [<c000855c>] (gic_handl)
[  110.620000] [<c000855c>] (gic_handle_irq+0x34/0x68) from [<c000dcc4>] (__irq)
[  110.625000] Exception stack(0xc05c7f58 to 0xc05c7fa0)
[  110.630000] 7f40:                                                       00001
[  110.640000] 7f60: 00000000 00000000 c05c6000 c05c6000 c062f648 c04616f8 c05c1
[  110.645000] 7f80: c05ec448 00000000 c0605854 c05c7fa0 c00654c4 c000f248 2000f
[  110.655000] [<c000dcc4>] (__irq_svc+0x44/0x78) from [<c000f248>] (default_id)
[  110.665000] [<c000f248>] (default_idle+0x20/0x30) from [<c000f378>] (cpu_idl)
[  110.670000] [<c000f378>] (cpu_idle+0x48/0xf4) from [<c059183c>] (start_kerne)
[  110.680000] Code: e5d5300c e3833001 e5c5300c e5963000 (e5933010)
[  110.685000] ---[ end trace 13036207479db904 ]---
[  110.690000] Kernel panic - not syncing: Fatal exception in interrupt
[  110.695000] CPU1: stopping
[  110.695000] [<c00143d8>] (unwind_backtrace+0x0/0xf8) from [<c0012d54>] (hand)
[  110.695000] [<c0012d54>] (handle_IPI+0x124/0x150) from [<c0008588>] (gic_han)
[  110.695000] [<c0008588>] (gic_handle_irq+0x60/0x68) from [<c000dcc4>] (__irq)
[  110.695000] Exception stack(0xed071f88 to 0xed071fd0)
[  110.695000] 1f80:                   c000f244 ed071fd0 00000000 00000000 ed070
[  110.695000] 1fa0: c062f648 c04616f8 ed070000 412fc091 c05ec448 00000000 c0600
[  110.695000] 1fc0: c000f244 c000f248 60000013 ffffffff
[  110.695000] [<c000dcc4>] (__irq_svc+0x44/0x78) from [<c000f248>] (default_id)
[  110.695000] [<c000f248>] (default_idle+0x20/0x30) from [<c000f378>] (cpu_idl)
[  110.695000] [<c000f378>] (cpu_idle+0x48/0xf4) from [<40452248>] (0x40452248)