[  593.114796] BUG: soft lockup - CPU#1 stuck for 22s! [sync:10584]
[  593.132843] Modules linked in:
[  593.142015] 
[  593.146483] Pid: 10584, comm:                 sync
[  593.160868] CPU: 1    Not tainted  (3.4.43-WR5.0.1.10_standard #2)
[  593.179461] PC is at yaffs_flush_inodes+0x28/0x4c
[  593.193588] LR is at yaffs_flush_inodes+0x30/0x4c
[  593.207720] pc : [<c010f4d0>]    lr : [<c010f4d8>]    psr: a0000013
[  593.207745] sp : dec5bec8  ip : dec5bec8  fp : dec5bedc
[  593.242181] r10: 00000000  r9 : dec5a000  r8 : 00000000
[  593.257861] r7 : 00000001  r6 : 00000000  r5 : df2f57c0  r4 : df44c2a8
[  593.277454] r3 : df2f5890  r2 : df44c38c  r1 : 00000001  r0 : df3b1c28
d[  593.297046] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
[  593.318681] Control: 00c5787d  Table: 1ed0800a  DAC: 00000015
[  593.335913] Backtrace: 

[  593.343842] [<c0011a70>] (dump_backtrace+0x0/0xf8) from [<c02b4230>] (dump_stack+0x18/0x1c)
[  593.368906]  r6:c03bd935 r5:c03cb6b0 r4:dec5be80a r3:df2fdac0
s[  593.386269] [<c02b4218>] (dump_stack+0x0/0x1c) from [<c000f980>] (show_regs+0x44/0x50)
[  593.410244] [<c000f93c>] (show_regs+0x0/0x50) from [<c0064010>] (watchdog_timer_fn+0x104/0x170)
[  593.436348]  r4:dec5a000 r3:df2fdac0
[  593.447173] [<c0063f0c>] (watchdog_timer_fn+0x0/0x170) from [<c003a87c>] (__run_hrtimer.isra.22+0x58/0xd8)
[  593.476191] [<c003a824>] (__run_hrtimer.isra.22+0x0/0xd8) from [<c003b50c>] (hrtimer_run_queues+0x90/0xc0)
[  593.505161]  r7:c0d2b680 r6:c0d2b6d0 r5:00000089 r4:da1f3d82
[  593.522276] [<c003b47c>] (hrtimer_run_queues+0x0/0xc0) from [<c002784c>] (run_local_timers+0x14/0x34)
[  593.549942]  r8:00000000 r7:dec5beb4 r6:00000001 r5:00000000 r4:df2fdac0
[  593.569614] r3:dec5a000
[  593.577525] [<c0027838>] (run_local_timers+0x0/0x34) from [<c00278a0>] (update_process_times+0x34/0x54)
[  593.605766] [<c002786c>] (update_process_times+0x0/0x54) from [<c00529f4>] (tick_periodic+0xa8/0xc4)
[  593.633172]  r6:ffffffff r5:00000001 r4:c0d2b180 r3:c03cb6b0
[  593.650268] [<c005294c>] (tick_periodic+0x0/0xc4) from [<c0052b14>] (tick_handle_periodic+0x2c/0x90)
[  593.677673]  r5:00000001 r4:c0d2b180
[  593.688469] [<c0052ae8>] (tick_handle_periodic+0x0/0x90) from [<c0012a24>] (ipi_timer+0x34/0x40)
[  593.714832]  r7:dec5beb4 r6:ffffffff r5:00000001 r4:00000000
[  593.731919] [<c00129f0>] (ipi_timer+0x0/0x40) from [<c0012cdc>] (handle_IPI+0x84/0xfc)
[  593.755711] [<c0012c58>] (handle_IPI+0x0/0xfc) from [<c0008498>] (gic_handle_irq+0x5c/0x64)
[  593.780770]  r5:dec5be80 r4:e8314100
[  593.791564] [<c000843c>] (gic_handle_irq+0x0/0x64) from [<c000e020>] (__irq_svc+0x40/0x50)
[  593.816369] Exception stack(0xdec5be80 to 0xdec5bec8)
[  593.831555] be80: df3b1c28 00000001 df44c38c df2f5890 df44c2a8 df2f57c0 00000000 00000001
[  593.856124] bea0: 00000000 dec5a000 00000000 dec5bedc dec5bec8 dec5bec8 c010f4d8 c010f4d0
[  593.880666] bec0: a0000013 ffffffff
[  593.891127]  r5:a0000013 r4:c010f4d0
[  593.901937] [<c010f4a8>] (yaffs_flush_inodes+0x0/0x4c) from [<c010f748>] (yaffs_flush_super+0x20/0x44)
[  593.929862]  r5:00000000 r4:df83a180
[  593.940665] [<c010f728>] (yaffs_flush_super+0x0/0x44) from [<c01110cc>] (yaffs_do_sync_fs+0x98/0xc8)
[  593.968071]  r5:df2f57c0 r4:df83a180
[  593.978869] [<c0111034>] (yaffs_do_sync_fs+0x0/0xc8) from [<c011111c>] (yaffs_sync_fs+0x20/0x2c)
[  594.005231]  r8:c00c5930 r7:dec5bf84 r6:df2f5800 r5:00000001 r4:df2f57c0
[  594.024904] r3:c03d7544
[  594.032836] [<c01110fc>] (yaffs_sync_fs+0x0/0x2c) from [<c00c5914>] (__sync_filesystem+0x80/0x9c)
[  594.059498] [<c00c5894>] (__sync_filesystem+0x0/0x9c) from [<c00c5950>] (sync_one_sb+0x20/0x24)
[  594.085599]  r5:dfaf57c0 r4:df2f57c0
[  594.096394] [<c00c5930>] (sync_one_sb+0x0/0x24) from [<c00a2b44>] (iterate_supers+0x7c/0xd8)
[  594.121750] [<c00a2ac8>] (iterate_supers+0x0/0xd8) from [<c00c5850>] (sync_filesystems+0x20/0x2c)
[  594.148373]  r8:c000e508 r7:00000024 r6:00000001 r5:be8a6e94 r4:00000000
[  594.168042] r3:c03d3dd0
[  594.175951] [<c00c5830>] (sync_filesystems+0x0/0x2c) from [<c00c59e0>] (sys_sync+0x28/0x48)
[  594.201050] [<c00c59b8>] (sys_sync+0x0/0x48) from [<c000e340>] (ret_fast_syscall+0x0/0x30)

[  630.384763] INFO: rcu_sched self-detected stall on CPU { 1}  (t=6001 jiffies)
[  630.404746] INFO: rcu_sched detected stalls on CPUs/tasks: { 1} (detected by 0, t=6002 jiffies)
[  630.404862] INFO: Stall ended before state dump start
[  630.447448] Backtrace: 
[  630.454873] [<c0011a70>] (dump_backtrace+0x0/0xf8) from [<c02b4230>] (dump_stack+0x18/0x1c)
[  630.479950]  r6:c03d33c0 r5:c03c2080 r4:c03d33c0 r3:df2fdac0
[  630.497068] [<c02b4218>] (dump_stack+0x0/0x1c) from [<c006b514>] (print_cpu_stall+0x5c/0xc4)
[  630.522435] [<c006b4b8>] (print_cpu_stall+0x0/0xc4) from [<c006b74c>] (check_cpu_stall+0x50/0x84)
[  630.549069]  r7:dec5be94 r6:00008099 r5:00008099 r4:c03d33c0
[  630.566178] [<c006b6fc>] (check_cpu_stall+0x0/0x84) from [<c006b7a8>] (__rcu_pending+0x28/0x184)
[  630.592550]  r6:c03d33c0 r5:c03d33c0 r4:c0d2b950 r3:c03bd950
[  630.609661] [<c006b780>] (__rcu_pending+0x0/0x184) from [<c006b930>] (rcu_pending+0x2c/0x7c)
[  630.634992]  r6:c03bd950 r5:00000001 r4:c03cb6b0 r3:c03bd950
[  630.652105] [<c006b904>] (rcu_pending+0x0/0x7c) from [<c006c1fc>] (rcu_check_callbacks+0x58/0x68)
[  630.678737]  r6:00000001 r5:00000000 r4:00000001 r3:c0d2b9d8
[  630.695861] [<c006c1a4>] (rcu_check_callbacks+0x0/0x68) from [<c00278ac>] (update_process_times+0x40/0x54)
[  630.724841]  r4:df2fdac0 r3:dec5bda8
[  630.735666] [<c002786c>] (update_process_times+0x0/0x54) from [<c00529f4>] (tick_periodic+0xa8/0xc4)
[  630.763081]  r6:ffffffff r5:00000001 r4:c0d2b180 r3:c03cb6b0
[  630.780202] [<c005294c>] (tick_periodic+0x0/0xc4) from [<c0052b14>] (tick_handle_periodic+0x2c/0x90)
[  630.807616]  r5:00000001 r4:c0d2b180
[  630.818432] [<c0052ae8>] (tick_handle_periodic+0x0/0x90) from [<c0012a24>] (ipi_timer+0x34/0x40)
[  630.844805]  r7:dec5be94 r6:ffffffff r5:00000001 r4:00000000
[  630.861916] [<c00129f0>] (ipi_timer+0x0/0x40) from [<c0012cdc>] (handle_IPI+0x84/0xfc)
[  630.885721] [<c0012c58>] (handle_IPI+0x0/0xfc) from [<c0008498>] (gic_handle_irq+0x5c/0x64)
[  630.910791]  r5:dec5be60 r4:e8314100
[  630.921610] [<c000843c>] (gic_handle_irq+0x0/0x64) from [<c000e020>] (__irq_svc+0x40/0x50)
[  630.946426] Exception stack(0xdec5be60 to 0xdec5bea8)
[  630.961629] be60: df3b1c28 00000001 00000000 df2f5890 df44c2a8 df2f57c0 00000000 00000001
[  630.986216] be80: 00000000 dec5a000 00000000 dec5bedc dec5bec8 dec5beac c010f4d8 c011660c
[  631.010768] bea0: a0000013 ffffffff
[  631.021235]  r5:a0000013 r4:c011660c
[  631.032063] [<c010f4a8>] (yaffs_flush_inodes+0x0/0x4c) from [<c010f748>] (yaffs_flush_super+0x20/0x44)
[  631.059998]  r5:00000000 r4:df83a180
[  631.070821] [<c010f728>] (yaffs_flush_super+0x0/0x44) from [<c01110cc>] (yaffs_do_sync_fs+0x98/0xc8)
[  631.098234]  r5:df2f57c0 r4:df83a180
[  631.109051] [<c0111034>] (yaffs_do_sync_fs+0x0/0xc8) from [<c011111c>] (yaffs_sync_fs+0x20/0x2c)
[  631.135424]  r8:c00c5930 r7:dec5bf84 r6:df2f5800 r5:00000001 r4:df2f57c0
[  631.155111] r3:c03d7544
[  631.163052] [<c01110fc>] (yaffs_sync_fs+0x0/0x2c) from [<c00c5914>] (__sync_filesystem+0x80/0x9c)
[  631.189731] [<c00c5894>] (__sync_filesystem+0x0/0x9c) from [<c00c5950>] (sync_one_sb+0x20/0x24)
[  631.215842]  r5:dfaf57c0 r4:df2f57c0
[  631.226654] [<c00c5930>] (sync_one_sb+0x0/0x24) from [<c00a2b44>] (iterate_supers+0x7c/0xd8)
[  631.252026] [<c00a2ac8>] (iterate_supers+0x0/0xd8) from [<c00c5850>] (sync_filesystems+0x20/0x2c)
[  631.278660]  r8:c000e508 r7:00000024 r6:00000001 r5:be8a6e94 r4:00000000
[  631.298345] r3:c03d3dd0
[  631.306271] [<c00c5830>] (sync_filesystems+0x0/0x2c) from [<c00c59e0>] (sys_sync+0x28/0x48)
[  631.331388] [<c00c59b8>] (sys_sync+0x0/0x48) from [<c000e340>] (ret_fast_syscall+0x0/0x30)