[  205.893954] =================================
[  205.907009] [ INFO: inconsistent lock state ]
[  205.920093] 3.6.0-rc2-00283-g6b8b5a0 #1 Not tainted
[  205.934723] ---------------------------------
[  205.947802] inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
[  205.965835] inaro.wallpaper/2079 [HC1[1]:SC0[0]:HE0:SE1] takes:
[  205.983585]  (&(&client->buffer_lock)->rlock){?.+...}, at: [<c03ab5c8>] evdev_pass_event+0x44/0x11c
[  206.010790] {HARDIRQ-ON-W} state was registered at:
[  206.025396]   [<c0074858>] mark_held_locks+0x5c/0x130
[  206.040557]   [<c00749d4>] trace_hardirqs_on_caller+0xa8/0x190
[  206.058049]   [<c0505f5c>] _raw_spin_unlock_irq+0x24/0x2c
[  206.074254]   [<c03abaa0>] evdev_ioctl+0x260/0x91c
[  206.088619]   [<c00f49c4>] do_vfs_ioctl+0x80/0x538
[  206.102986]   [<c00f4eb0>] sys_ioctl+0x34/0x60
[  206.116305]   [<c000e040>] ret_fast_syscall+0x0/0x3c
[  206.131212] irq event stamp: 161284
[  206.141649] hardirqs last  enabled at (161282): [<c0505f5c>] _raw_spin_unlock_irq+0x24/0x2c
[  206.166695] hardirqs last disabled at (161283): [<c0028c6c>] __do_softirq+0x13c/0x24c
[  206.190181] softirqs last  enabled at (161284): [<c0028cb0>] __do_softirq+0x180/0x24c
[  206.213659] softirqs last disabled at (161279): [<c0029110>] irq_exit+0x90/0x98
[  206.235573] 
[  206.235573] other info that might help us debug this:
[  206.255127]  Possible unsafe locking scenario:
[  206.255127] 
[  206.272858]        CPU0
[  206.280167]        ----
[  206.287476]   lock(&(&client->buffer_lock)->rlock);
[  206.302104]   <Interrupt>
[  206.309933]     lock(&(&client->buffer_lock)->rlock);
[  206.325082] 
[  206.325082]  *** DEADLOCK ***
[  206.325082] 
[  206.342820] 3 locks held by inaro.wallpaper/2079:
[  206.356903]  #0:  (&(&dev->event_lock)->rlock){-.....}, at: [<c03a7dcc>] input_event+0x38/0x70
[  206.382782]  #1:  (rcu_read_lock){.+.+..}, at: [<c03a65d8>] input_pass_event+0x0/0x120
[  206.406571]  #2:  (rcu_read_lock){.+.+..}, at: [<c03ab6a0>] evdev_event+0x0/0x138
[  206.429063] 
[  206.429063] stack backtrace:
[  206.442138] [<c00150bc>] (unwind_backtrace+0x0/0xf8) from [<c04fdaec>] (print_usage_bug+0x250/0x2b8)
[  206.469527] [<c04fdaec>] (print_usage_bug+0x250/0x2b8) from [<c0071db0>] (mark_lock+0x294/0x69c)
[  206.495868] [<c0071db0>] (mark_lock+0x294/0x69c) from [<c0072b7c>] (__lock_acquire+0x9c4/0x19c4)
[  206.522209] [<c0072b7c>] (__lock_acquire+0x9c4/0x19c4) from [<c007407c>] (lock_acquire+0x94/0x108)
[  206.549071] [<c007407c>] (lock_acquire+0x94/0x108) from [<c050594c>] (_raw_spin_lock+0x2c/0x3c)
[  206.575155] [<c050594c>] (_raw_spin_lock+0x2c/0x3c) from [<c03ab5c8>] (evdev_pass_event+0x44/0x11c)
[  206.602278] [<c03ab5c8>] (evdev_pass_event+0x44/0x11c) from [<c03ab7b0>] (evdev_event+0x110/0x138)
[  206.629137] [<c03ab7b0>] (evdev_event+0x110/0x138) from [<c03a66e8>] (input_pass_event+0x110/0x120)
[  206.656256] [<c03a66e8>] (input_pass_event+0x110/0x120) from [<c03a7df4>] (input_event+0x60/0x70)
[  206.682868] [<c03a7df4>] (input_event+0x60/0x70) from [<c03d6420>] (hidinput_hid_event+0x244/0x384)
[  206.709993] [<c03d6420>] (hidinput_hid_event+0x244/0x384) from [<c03d0398>] (hid_process_event+0x12c/0x158)
[  206.739199] [<c03d0398>] (hid_process_event+0x12c/0x158) from [<c03d0a78>] (hid_report_raw_event+0x314/0x384)
[  206.768926] [<c03d0a78>] (hid_report_raw_event+0x314/0x384) from [<c03d0c80>] (hid_input_report+0x198/0x230)
[  206.798394] [<c03d0c80>] (hid_input_report+0x198/0x230) from [<c03d74b8>] (hid_irq_in+0x120/0x1b8)
[  206.825263] [<c03d74b8>] (hid_irq_in+0x120/0x1b8) from [<c039025c>] (usb_hcd_giveback_urb+0x4c/0xbc)
[  206.852653] [<c039025c>] (usb_hcd_giveback_urb+0x4c/0xbc) from [<c039eb60>] (schedule_ptds+0x400/0x7a8)
[  206.880818] [<c039eb60>] (schedule_ptds+0x400/0x7a8) from [<c039fb74>] (handle_done_ptds+0x414/0x49c)
[  206.908460] [<c039fb74>] (handle_done_ptds+0x414/0x49c) from [<c039fc8c>] (isp1760_irq+0x90/0xac)
[  206.935059] [<c039fc8c>] (isp1760_irq+0x90/0xac) from [<c038fd88>] (usb_hcd_irq+0x34/0x6c)
[  206.959835] [<c038fd88>] (usb_hcd_irq+0x34/0x6c) from [<c0087628>] (handle_irq_event_percpu+0x5c/0x244)
[  206.987995] [<c0087628>] (handle_irq_event_percpu+0x5c/0x244) from [<c008784c>] (handle_irq_event+0x3c/0x5c)
[  207.017462] [<c008784c>] (handle_irq_event+0x3c/0x5c) from [<c008a498>] (handle_fasteoi_irq+0x98/0x158)
[  207.045688] [<c008a498>] (handle_fasteoi_irq+0x98/0x158) from [<c0086eb8>] (generic_handle_irq+0x24/0x38)
[  207.074421] [<c0086eb8>] (generic_handle_irq+0x24/0x38) from [<c000ef88>] (handle_IRQ+0x4c/0xb0)
[  207.100792] [<c000ef88>] (handle_IRQ+0x4c/0xb0) from [<c0008464>] (gic_handle_irq+0x24/0x58)
[  207.126117] [<c0008464>] (gic_handle_irq+0x24/0x58) from [<c000ddfc>] (__irq_usr+0x3c/0x60)
[  207.151150] Exception stack(0xee929fb0 to 0xee929ff8)
[  207.166285] 9fa0:                                     9a1cf400 ff050505 00000400 b6d3d008
[  207.190795] 9fc0: 9a1cf000 00000079 00001000 00001000 ff050505 bebfd590 b6c18fac b8789c80
[  207.215302] 9fe0: 00000006 bebfd408 b6c18fd4 b6be2a88 200f0010 ffffffff