PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.003 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.002 seconds) done.
PM: suspend of devices complete after 64.713 msecs
PM: suspend devices took 0.070 seconds
PM: late suspend of devices complete after 8.927 msecs
PM: noirq suspend of devices complete after 9.049 msecs
Disabling non-boot CPUs ...
CPU1: shutdown
CPU2: shutdown
CPU3: shutdown
Enabling non-boot CPUs ...
CPU1 is up
Unable to handle kernel paging request at virtual address 708ebbfa

===============================
[ INFO: suspicious RCU usage. ]
4.2.0-rc2-dirty #249 Not tainted
-------------------------------
include/linux/rcupdate.h:849 rcu_read_lock() used illegally while idle!

other info that might help us debug this:


RCU used illegally from idle CPU!
rcu_scheduler_active = 1, debug_locks = 0
RCU used illegally from extended quiescent state!
9 locks held by sh/962:
 #0:  (sb_writers#5){.+.+.+}, at: [<800fe580>] vfs_write+0x138/0x154
 #1:  (&of->mutex){+.+.+.}, at: [<8016977c>] kernfs_fop_write+0x54/0x1a8
 #2:  (s_active#17){.+.+.+}, at: [<80169784>] kernfs_fop_write+0x5c/0x1a8
 #3:  (pm_mutex){+.+.+.}, at: [<80071998>] pm_suspend+0x100/0x2a8
 #4:  (cpu_add_remove_lock){+.+.+.}, at: [<8002b314>] cpu_maps_update_begin+0x18/0x20
 #5:  (cpu_hotplug.lock){++++++}, at: [<8002b550>] cpu_hotplug_begin+0x0/0xd0
 #6:  (cpu_hotplug.lock#2){+.+.+.}, at: [<8002b5cc>] cpu_hotplug_begin+0x7c/0xd0
 #7:  (sparse_irq_lock){+.+.+.}, at: [<800758d8>] irq_lock_sparse+0x18/0x20
 #8:  (rcu_read_lock){......}, at: [<8005dacc>] trigger_load_balance+0x58/0x578

stack backtrace:
CPU: 0 PID: 962 Comm: sh Not tainted 4.2.0-rc2-dirty #249
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Backtrace:
[<80012ee8>] (dump_backtrace) from [<80013084>] (show_stack+0x18/0x1c)
 r6:00000351 r5:00000000 r4:00000000 r3:00000000
[<8001306c>] (show_stack) from [<80771e68>] (dump_stack+0x88/0xa4)
[<80771de0>] (dump_stack) from [<800676d8>] (lockdep_rcu_suspicious+0xbc/0x11c)
 r5:80921698 r4:bd95a280
[<8006761c>] (lockdep_rcu_suspicious) from [<8005dc68>] (trigger_load_balance+0x1f4/0x578)
 r7:ffff923e r6:00000000 r5:80ad7cfe r4:be79cfc0
[<8005da74>] (trigger_load_balance) from [<80051044>] (scheduler_tick+0x9c/0xc4)
 r10:80a91a40 r9:be79ac90 r8:bd95a280 r7:00000000 r6:80a74b2c r5:be79cfc0
 r4:be79cfc0
[<80050fa8>] (scheduler_tick) from [<80085358>] (update_process_times+0x58/0x64)
 r8:80095f0c r7:bd749c50 r6:be79afc0 r5:00000000 r4:bd95a280 r3:00010000
[<80085300>] (update_process_times) from [<80095e50>] (tick_sched_handle+0x50/0x54)
 r5:00000004 r4:6d15e2a1
[<80095e00>] (tick_sched_handle) from [<80095f6c>] (tick_sched_timer+0x60/0xa8)
[<80095f0c>] (tick_sched_timer) from [<8008603c>] (__hrtimer_run_queues+0xc0/0x1cc)
 r7:be79ad00 r6:be79ac80 r5:be79ad0c r4:be79afc0
[<80085f7c>] (__hrtimer_run_queues) from [<8008645c>] (hrtimer_interrupt+0xc8/0x22c)
 r10:be79ad58 r9:be79ad38 r8:be79ad78 r7:be79ac80 r6:be79acc0 r5:00000003
 r4:ffffffff
[<80086394>] (hrtimer_interrupt) from [<80016ebc>] (twd_handler+0x34/0x48)
 r10:be008000 r9:00000010 r8:be79fb40 r7:00000010 r6:be01ea00 r5:80a91be0
 r4:be01f000
[<80016e88>] (twd_handler) from [<8007996c>] (handle_percpu_devid_irq+0x88/0xa8)
[<800798e4>] (handle_percpu_devid_irq) from [<80075824>] (generic_handle_irq+0x28/0x38)
 r8:00000001 r7:00000000 r6:80a6f5fc r5:80a74b2c r4:00000010 r3:800798e4
[<800757fc>] (generic_handle_irq) from [<80075968>] (__handle_domain_irq+0x6c/0xe4)
 r4:00000010 r3:00000133
[<800758fc>] (__handle_domain_irq) from [<80009554>] (gic_handle_irq+0x28/0x68)
 r10:00000000 r8:f4000100 r7:80a74ca4 r6:f400010c r5:bd749c50 r4:0000000d
[<8000952c>] (gic_handle_irq) from [<80013c24>] (__irq_svc+0x44/0x5c)
Exception stack(0xbd749c50 to 0xbd749c98)
9c40:                                     00000001 bd95a7e8 00000000 600001d3
9c60: 40000153 be79a440 be79a440 ffff92a1 80a74100 00000010 00000000 bd749cac
9c80: 80c0a8f0 bd749c98 8006b738 8077a5e0 20000153 ffffffff
 r8:80a74100 r7:bd749c84 r6:ffffffff r5:20000153 r4:8077a5e0 r3:bd95a280
[<8077a5a4>] (_raw_spin_unlock_irqrestore) from [<80779404>] (schedule_timeout+0x134/0x1cc)
 r5:be79a440 r4:bd749cb4
[<807792d0>] (schedule_timeout) from [<80775b5c>] (wait_for_common+0xc8/0x15c)
 r8:00000000 r7:00000002 r6:80a79be4 r5:80a79be8 r4:00000064
[<80775a94>] (wait_for_common) from [<80775c20>] (wait_for_completion_timeout+0x14/0x18)
 r10:be077300 r8:00000000 r7:80adb360 r6:be077300 r5:00000002 r4:00000000
[<80775c0c>] (wait_for_completion_timeout) from [<80015af0>] (__cpu_up+0xb4/0x14c)
[<80015a3c>] (__cpu_up) from [<8002b728>] (_cpu_up+0xcc/0x148)
 r7:80a749c4 r6:00000002 r5:00000000 r4:00000002
[<8002b65c>] (_cpu_up) from [<8076c090>] (enable_nonboot_cpus+0x70/0xb8)
 r10:00000000 r9:00000000 r8:80a75429 r7:80a74a18 r6:80a74a7c r5:80adbad0
 r4:00000002
[<8076c020>] (enable_nonboot_cpus) from [<8007172c>] (suspend_devices_and_enter+0x318/0x484)
 r6:00000003 r5:8128869c r4:00000000 r3:20000153
[<80071414>] (suspend_devices_and_enter) from [<80071b08>] (pm_suspend+0x270/0x2a8)
 r10:00000004 r9:00000000 r8:bd6a1100 r7:00000003 r6:812886a8 r5:00000003
 r4:00000000
[<80071898>] (pm_suspend) from [<80070420>] (state_store+0x70/0xc0)
 r6:812886ac r5:80929290 r4:00000003 r3:0000006d
[<800703b0>] (state_store) from [<802db104>] (kobj_attr_store+0x1c/0x28)
 r10:00528408 r8:00000000 r7:00000004 r6:bd6a1100 r5:00000004 r4:bd6c9a00
[<802db0e8>] (kobj_attr_store) from [<8016a4a0>] (sysfs_kf_write+0x54/0x58)
[<8016a44c>] (sysfs_kf_write) from [<801697f0>] (kernfs_fop_write+0xc8/0x1a8)
 r6:bd6c9a0c r5:bd6a1100 r4:bd6c9a00 r3:8016a44c
[<80169728>] (kernfs_fop_write) from [<800fd4b0>] (__vfs_write+0x34/0xe0)
 r10:00528408 r9:bd748000 r8:00000004 r7:bd749f78 r6:bd50a280 r5:00528408
 r4:80783d34
[<800fd47c>] (__vfs_write) from [<800fe4e0>] (vfs_write+0x98/0x154)
 r8:00000004 r7:bd749f78 r6:00000004 r5:00528408 r4:bd50a280
[<800fe448>] (vfs_write) from [<800fe778>] (SyS_write+0x44/0x90)
 r10:00528408 r8:00000004 r7:bd50a280 r6:bd50a280 r5:00000000 r4:00000000
[<800fe734>] (SyS_write) from [<8000fb60>] (ret_fast_syscall+0x0/0x54)
 r10:00000000 r8:8000fd44 r7:00000004 r6:00000004 r5:76f655c0 r4:00000004
pgd = 80004000
[708ebbfa] *pgd=00000000
Internal error: Oops: 5 [#1] SMP ARM
Modules linked in:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.2.0-rc2-dirty #249
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
task: be076780 ti: be0a0000 task.ti: be0a0000
PC is at rcu_is_watching+0x28/0x3c
LR is at select_task_rq_fair+0x6a4/0x9e8
pc : [<8007e9b0>]    lr : [<800581a8>]    psr: 60000193
sp : be0a1d10  ip : be0a1d20  fp : be0a1d1c
r10: 80a70fc0  r9 : 00000000  r8 : 00000001
r7 : 40000113  r6 : 00000001  r5 : 00000001  r4 : 80ad7cfe
r3 : 80a6e40c  r2 : efe7d7ee  r1 : 00000001  r0 : 00000001
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 10c5387d  Table: 1000404a  DAC: 00000015
Process swapper/1 (pid: 0, stack limit = 0xbe0a0210)
Stack: (0xbe0a1d10 to 0xbe0a2000)
1d00:                                     be0a1db4 be0a1d20 800581a8 8007e994
1d20: 00000000 00000000 80057b68 8004f7e8 00000001 be074500 00000000 800841ac
1d40: be0a1d84 be0a1d50 8006ae9c 80068ee4 00000001 00000080 00000001 00000010
1d60: be07491c 40000113 00000001 be074500 00000000 be0a1d80 800669c4 8006665c
1d80: be076780 00000010 60000193 be074500 be07490c 80a74b2c 40000113 00000001
1da0: 00000000 80a70fc0 be0a1df4 be0a1db8 8004f8cc 80057b10 7bae8c24 00000000
1dc0: 60000113 800841ac 00000001 be074500 00000001 80084624 00000100 be074500
1de0: be074500 800841ac be0a1e0c be0a1df8 8004fbc0 8004f7c0 be076780 be0a1e30
1e00: be0a1e1c be0a1e10 80084634 8004fba0 be0a1e64 be0a1e20 8008421c 80084630
1e20: 00000001 00000000 800841ac 00000000 812cbdcc 80c0fdf0 00000000 8092ee88
1e40: be09be8c be7a5440 00000000 00200200 80a74100 80084624 be0a1ea4 be0a1e68
1e60: 8008444c 800841b8 be7a597c be7a587c 8006b814 00000000 00000000 00000020
1e80: 80a74084 00000001 80a74080 00000001 00000100 80a74080 be0a1eec be0a1ea8
1ea0: 8002ec40 800842b4 be0a1ec4 be0a1eb8 00000001 00200040 ffff923f 0000000a
1ec0: 80079980 00000000 80a74b2c 80a6f5fc 00000000 00000001 8077d3b0 be008000
1ee0: be0a1f04 be0a1ef0 8002f114 8002eb1c 00000133 00000000 be0a1f2c be0a1f08
1f00: 80075970 8002f05c 0000000d be0a1f58 f400010c 80a74ca4 f4000100 80a74b2c
1f20: be0a1f54 be0a1f30 80009554 80075908 be076780 80010718 20000113 ffffffff
1f40: be0a1f8c 80a74a10 be0a1fac be0a1f58 80013c24 80009538 00000001 00000001
1f60: 00000000 800226a0 00000000 80a749c4 80a6e3e4 80ad7d12 80a74a10 8077d3b0
1f80: 80a74b2c be0a1fac be0a1f70 be0a1fa0 8006b864 80010718 20000113 ffffffff
1fa0: be0a1fbc be0a1fb0 800645b0 800106fc be0a1fdc be0a1fc0 80064718 80064594
1fc0: be0a1fdc be0a1fd0 8006b960 80adb360 be0a1ff4 be0a1fe0 80015e2c 800645cc
1fe0: 4e08806a 00000015 00000000 be0a1ff8 1000962c 80015d18 02000000 00040682
Backtrace:
[<8007e988>] (rcu_is_watching) from [<800581a8>] (select_task_rq_fair+0x6a4/0x9e8)
[<80057b04>] (select_task_rq_fair) from [<8004f8cc>] (try_to_wake_up+0x118/0x3c8)
 r10:80a70fc0 r9:00000000 r8:00000001 r7:40000113 r6:80a74b2c r5:be07490c
 r4:be074500
[<8004f7b4>] (try_to_wake_up) from [<8004fbc0>] (wake_up_process+0x2c/0x48)
 r10:800841ac r9:be074500 r8:be074500 r7:00000100 r6:80084624 r5:00000001
 r4:be074500
[<8004fb94>] (wake_up_process) from [<80084634>] (process_timeout+0x10/0x14)
 r4:be0a1e30 r3:be076780
[<80084624>] (process_timeout) from [<8008421c>] (call_timer_fn+0x70/0xfc)
[<800841ac>] (call_timer_fn) from [<8008444c>] (run_timer_softirq+0x1a4/0x244)
 r10:80084624 r8:80a74100 r7:00200200 r6:00000000 r5:be7a5440 r4:be09be8c
[<800842a8>] (run_timer_softirq) from [<8002ec40>] (__do_softirq+0x130/0x2bc)
 r10:80a74080 r9:00000100 r8:00000001 r7:80a74080 r6:00000001 r5:80a74084
 r4:00000020
[<8002eb10>] (__do_softirq) from [<8002f114>] (irq_exit+0xc4/0x138)
 r10:be008000 r9:8077d3b0 r8:00000001 r7:00000000 r6:80a6f5fc r5:80a74b2c
 r4:00000000
[<8002f050>] (irq_exit) from [<80075970>] (__handle_domain_irq+0x74/0xe4)
 r4:00000000 r3:00000133
[<800758fc>] (__handle_domain_irq) from [<80009554>] (gic_handle_irq+0x28/0x68)
 r10:80a74b2c r8:f4000100 r7:80a74ca4 r6:f400010c r5:be0a1f58 r4:0000000d
[<8000952c>] (gic_handle_irq) from [<80013c24>] (__irq_svc+0x44/0x5c)
Exception stack(0xbe0a1f58 to 0xbe0a1fa0)
1f40:                                                       00000001 00000001
1f60: 00000000 800226a0 00000000 80a749c4 80a6e3e4 80ad7d12 80a74a10 8077d3b0
1f80: 80a74b2c be0a1fac be0a1f70 be0a1fa0 8006b864 80010718 20000113 ffffffff
 r8:80a74a10 r7:be0a1f8c r6:ffffffff r5:20000113 r4:80010718 r3:be076780
[<800106f0>] (arch_cpu_idle) from [<800645b0>] (default_idle_call+0x28/0x38)
[<80064588>] (default_idle_call) from [<80064718>] (cpu_startup_entry+0x158/0x200)
[<800645c0>] (cpu_startup_entry) from [<80015e2c>] (secondary_start_kernel+0x120/0x13c)
 r7:80adb360
[<80015d0c>] (secondary_start_kernel) from [<1000962c>] (0x1000962c)
 r5:00000015 r4:4e08806a
Code: e5d72014 e5811090 e55f2010 47922001 (f6130414)
---[ end trace 600c596581bf0ba0 ]---
Kernel panic - not syncing: Fatal exception in interrupt
CPU2: stopping
CPU: 2 PID: 0 Comm: swapper/2 Tainted: G      D         4.2.0-rc2-dirty #249
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Backtrace:
[<80012ee8>] (dump_backtrace) from [<80013084>] (show_stack+0x18/0x1c)
 r6:00000000 r5:00000000 r4:00000000 r3:00000000
[<8001306c>] (show_stack) from [<80771e68>] (dump_stack+0x88/0xa4)
[<80771de0>] (dump_stack) from [<800161e8>] (handle_IPI+0x154/0x180)
 r5:80a74b2c r4:00000002
[<80016094>] (handle_IPI) from [<8000958c>] (gic_handle_irq+0x60/0x68)
 r7:80a74ca4 r6:f400010c r5:be0a3f58 r4:fffffff5
[<8000952c>] (gic_handle_irq) from [<80013c24>] (__irq_svc+0x44/0x5c)
Exception stack(0xbe0a3f58 to 0xbe0a3fa0)
3f40:                                                       80010714 be0a3f88
3f60: be0a3fb0 800226a0 00000000 80a749c4 80a6e3e4 80ad7d12 80a74a10 8077d3b0
3f80: 80a74b2c be0a3fac be0a3f90 be0a3fa0 8006b960 80010718 60000113 ffffffff
 r8:80a74a10 r7:be0a3f8c r6:ffffffff r5:60000113 r4:80010718 r3:be077300
[<800106f0>] (arch_cpu_idle) from [<800645b0>] (default_idle_call+0x28/0x38)
[<80064588>] (default_idle_call) from [<80064718>] (cpu_startup_entry+0x158/0x200)
[<800645c0>] (cpu_startup_entry) from [<80015e2c>] (secondary_start_kernel+0x120/0x13c)
 r7:80adb360
[<80015d0c>] (secondary_start_kernel) from [<1000962c>] (0x1000962c)
 r5:00000015 r4:4e08806a
SMP: failed to stop secondary CPUs
drm_kms_helper: panic occurred, switching back to text console
---[ end Kernel panic - not syncing: Fatal exception in interrupt
BUG: spinlock lockup suspected on CPU#0, sh/962
 lock: 0xbe07490c, .magic: dead4ead, .owner: swapper/1/0, .owner_cpu: 1
CPU: 0 PID: 962 Comm: sh Tainted: G      D         4.2.0-rc2-dirty #249
Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
Backtrace:
[<80012ee8>] (dump_backtrace) from [<80013084>] (show_stack+0x18/0x1c)
 r6:002dc6c0 r5:00000000 r4:00000000 r3:00000000
[<8001306c>] (show_stack) from [<80771e68>] (dump_stack+0x88/0xa4)
[<80771de0>] (dump_stack) from [<8076f55c>] (spin_dump+0x7c/0x90)
 r5:be07490c r4:be076780
[<8076f4e0>] (spin_dump) from [<8006e79c>] (do_raw_spin_lock+0x11c/0x1b0)
 r5:00000000 r4:002dc6c0
[<8006e680>] (do_raw_spin_lock) from [<80779fb4>] (_raw_spin_lock_irqsave+0x48/0x54)
 r10:00000003 r8:00000000 r7:00000000 r6:8004f7e8 r5:800001d3 r4:be07490c
[<80779f6c>] (_raw_spin_lock_irqsave) from [<8004f7e8>] (try_to_wake_up+0x34/0x3c8)
 r6:00000003 r5:be07490c r4:be074500
[<8004f7b4>] (try_to_wake_up) from [<8004fb90>] (default_wake_function+0x14/0x18)
 r10:00000003 r9:8006428c r8:00000000 r7:00000000 r6:80a84ff0 r5:00000000
 r4:be09befc
[<8004fb7c>] (default_wake_function) from [<800642a0>] (autoremove_wake_function+0x14/0x3c)
[<8006428c>] (autoremove_wake_function) from [<80063b18>] (__wake_up_common+0x58/0x98)
 r4:80a84fe4 r3:00000000
[<80063ac0>] (__wake_up_common) from [<800640a0>] (__wake_up+0x40/0x54)
 r10:80ad7d23 r9:00000001 r8:00000003 r7:00000001 r6:00000000 r5:a0000153
 r4:80a84fd0
[<80064060>] (__wake_up) from [<8007fe88>] (rcu_gp_kthread_wake+0x54/0x58)
 r8:80a84e40 r7:ffffffe0 r6:00000000 r5:80a84e40 r4:80a84e40
[<8007fe34>] (rcu_gp_kthread_wake) from [<8007ff88>] (rcu_report_qs_rnp+0xfc/0x16c)
[<8007fe8c>] (rcu_report_qs_rnp) from [<800818e8>] (rcu_process_callbacks+0x3b0/0x6d8)
 r10:80a84e40 r9:80a84e40 r8:00000001 r7:00000000 r6:20000153 r5:80a84e40
 r4:be79d600
[<80081538>] (rcu_process_callbacks) from [<8002ec40>] (__do_softirq+0x130/0x2bc)
 r10:80a740a0 r9:00000100 r8:00000009 r7:80a74080 r6:00000001 r5:80a740a4
 r4:00000000
[<8002eb10>] (__do_softirq) from [<8002f114>] (irq_exit+0xc4/0x138)
 r10:be008000 r9:00000010 r8:00000001 r7:00000000 r6:80a6f5fc r5:80a74b2c
 r4:00000000
[<8002f050>] (irq_exit) from [<80075970>] (__handle_domain_irq+0x74/0xe4)
 r4:00000000 r3:00000133
[<800758fc>] (__handle_domain_irq) from [<80009554>] (gic_handle_irq+0x28/0x68)
 r10:00000000 r8:f4000100 r7:80a74ca4 r6:f400010c r5:bd749c50 r4:0000000d
[<8000952c>] (gic_handle_irq) from [<80013c24>] (__irq_svc+0x44/0x5c)
Exception stack(0xbd749c50 to 0xbd749c98)
9c40:                                     00000001 bd95a7e8 00000000 600001d3
9c60: 40000153 be79a440 be79a440 ffff92a1 80a74100 00000010 00000000 bd749cac
9c80: 80c0a8f0 bd749c98 8006b738 8077a5e0 20000153 ffffffff
 r8:80a74100 r7:bd749c84 r6:ffffffff r5:20000153 r4:8077a5e0 r3:bd95a280
[<8077a5a4>] (_raw_spin_unlock_irqrestore) from [<80779404>] (schedule_timeout+0x134/0x1cc)
 r5:be79a440 r4:bd749cb4
[<807792d0>] (schedule_timeout) from [<80775b5c>] (wait_for_common+0xc8/0x15c)
 r8:00000000 r7:00000002 r6:80a79be4 r5:80a79be8 r4:00000064
[<80775a94>] (wait_for_common) from [<80775c20>] (wait_for_completion_timeout+0x14/0x18)
 r10:be077300 r8:00000000 r7:80adb360 r6:be077300 r5:00000002 r4:00000000
[<80775c0c>] (wait_for_completion_timeout) from [<80015af0>] (__cpu_up+0xb4/0x14c)
[<80015a3c>] (__cpu_up) from [<8002b728>] (_cpu_up+0xcc/0x148)
 r7:80a749c4 r6:00000002 r5:00000000 r4:00000002
[<8002b65c>] (_cpu_up) from [<8076c090>] (enable_nonboot_cpus+0x70/0xb8)
 r10:00000000 r9:00000000 r8:80a75429 r7:80a74a18 r6:80a74a7c r5:80adbad0
 r4:00000002
[<8076c020>] (enable_nonboot_cpus) from [<8007172c>] (suspend_devices_and_enter+0x318/0x484)
 r6:00000003 r5:8128869c r4:00000000 r3:20000153
[<80071414>] (suspend_devices_and_enter) from [<80071b08>] (pm_suspend+0x270/0x2a8)
 r10:00000004 r9:00000000 r8:bd6a1100 r7:00000003 r6:812886a8 r5:00000003
 r4:00000000
[<80071898>] (pm_suspend) from [<80070420>] (state_store+0x70/0xc0)
 r6:812886ac r5:80929290 r4:00000003 r3:0000006d
[<800703b0>] (state_store) from [<802db104>] (kobj_attr_store+0x1c/0x28)
 r10:00528408 r8:00000000 r7:00000004 r6:bd6a1100 r5:00000004 r4:bd6c9a00
[<802db0e8>] (kobj_attr_store) from [<8016a4a0>] (sysfs_kf_write+0x54/0x58)
[<8016a44c>] (sysfs_kf_write) from [<801697f0>] (kernfs_fop_write+0xc8/0x1a8)
 r6:bd6c9a0c r5:bd6a1100 r4:bd6c9a00 r3:8016a44c
[<80169728>] (kernfs_fop_write) from [<800fd4b0>] (__vfs_write+0x34/0xe0)
 r10:00528408 r9:bd748000 r8:00000004 r7:bd749f78 r6:bd50a280 r5:00528408
 r4:80783d34
[<800fd47c>] (__vfs_write) from [<800fe4e0>] (vfs_write+0x98/0x154)
 r8:00000004 r7:bd749f78 r6:00000004 r5:00528408 r4:bd50a280
[<800fe448>] (vfs_write) from [<800fe778>] (SyS_write+0x44/0x90)
 r10:00528408 r8:00000004 r7:bd50a280 r6:bd50a280 r5:00000000 r4:00000000
[<800fe734>] (SyS_write) from [<8000fb60>] (ret_fast_syscall+0x0/0x54)
 r10:00000000 r8:8000fd44 r7:00000004 r6:00000004 r5:76f655c0 r4:00000004