libphy: mdio_mux: probed
Machine check in kernel mode.
Caused by (from MCSR=a000): Load Error Report
Guarded Load Error Report
---[ end trace 21d9c19690c3cd77 ]---

Unable to handle kernel paging request for data at address 0xffffffec
Faulting instruction address: 0xc00566d4
Oops: Kernel access of bad area, sig: 11 [#1]
SMP NR_CPUS=4 P3041 DS
Modules linked in:
NIP: c00566d4 LR: c004cf28 CTR: c006eff0
REGS: ee69bca8 TRAP: 0300   Tainted: G      D       (3.8.13-rt9-DEBUG-WP6-04559-ge12782e-dirty)
MSR: 00000002 <>  CR: 42474f22  XER: 20000000
DEAR: ffffffec, ESR: 00000000
TASK = ea1ae570[539] 'kworker/u:3' THREAD: ea476000 CPU: 0
GPR00: c052c4f8 ee69bd58 ea1ae570 ea1ae570 00000000 00000001 00000000 00000000
GPR08: 00000000 00000000 00000000 00000000 22474f82 00000000 c0056240 008dc000
GPR16: ea1ae6f4 c0550000 c0770000 c07a0000 c0760000 c076acc0 c0550000 00000000
GPR24: c0725480 00000004 c0725480 c076b1c8 ee69a000 00000000 ea1ae570 00000000
NIP [c00566d4] kthread_data+0x4/0x10
LR [c004cf28] wq_worker_sleeping+0x18/0x110
Call Trace:
Instruction dump:
409effdc 80010024 7fc3f378 bb410008 38210020 7c0803a6 4e800020 81220158
8069ffe4 5463f7fe 4e800020 81230158 <8069ffec> 4e800020 60000000 80620158
---[ end trace 21d9c19690c3cd78 ]---

Fixing recursive fault but reboot is needed!
mmc0: new high speed SDHC card at address aaaa
ata1: No Device OR PHYRDY change,Hstatus = 0xa0000000
ata1: SATA link down (SStatus 0 SControl 300)
ata2: No Device OR PHYRDY change,Hstatus = 0xa0000000
ata2: SATA link down (SStatus 0 SControl 300)
INFO: rcu_sched detected stalls on CPUs/tasks: { 0} (detected by 1, t=5253 jiffies, g=4294967041, c=4294967040, q=51)
Task dump for CPU 0:
kworker/u:3     D 00000000     0   539      2 0x00000800
Call Trace:
[ea477ad8] [c000796c] __switch_to+0x4c/0xc0
[ea477af0] [c052c498] __schedule+0x298/0x4e0
[ea477bf8] [c0018530] set_pte_at+0x20/0x40
[ea477c08] [c0018bd4] map_page+0x94/0xe0
[ea477c30] [c0018da4] __ioremap_caller+0x184/0x210
[ea477c70] [c0337748] mdio_mux_mmioreg_switch_fn.part.1+0x28/0xc0
[ea477c88] [c0337404] mdio_mux_read+0x44/0xa0
[ea477ca8] [c0336b90] mdiobus_read+0x50/0x80
[ea477cc0] [c0335c9c] get_phy_device+0xbc/0x100
[ea477d08] [c04309e8] of_mdiobus_register.part.2+0xd8/0x210
[ea477d58] [c0337278] mdio_mux_init+0x198/0x240
[ea477d98] [c0337648] mdio_mux_mmioreg_probe+0x1b8/0x290
[ea477de8] [c02d5430] platform_drv_probe+0x20/0x30
[ea477df0] [c02d35a0] really_probe+0x90/0x390
[ea477e10] [c02d1580] bus_for_each_drv+0x70/0xb0
[ea477e38] [c02d39a8] device_attach+0xc8/0xf0
[ea477e50] [c02d2814] bus_probe_device+0xa4/0xc0
[ea477e68] [c02d2e90] deferred_probe_work_func+0xa0/0xf0
[ea477e88] [c004b6e0] process_one_work+0x170/0x4f0
[ea477eb8] [c004be84] worker_thread+0x154/0x360
[ea477ef0] [c00562d8] kthread+0x98/0xa0
[ea477f40] [c00102d0] ret_from_kernel_thread+0x64/0x6c