Hello Sami,
first of all, thanks for your support and thanks for the patch.
Unfortunately, the boot process still hangs, although there seems to be
some kind of progress (the SD/MMC card is detected, which was not the
case before - so the kernel seems to crash later).
I attached the output of the serial console. The first output is from a
kernel that was configured with full RT support
(CONFIG_PREEMPT_RT_FULL), the second one with basic RT support
(CONFIG_PREEMPT_RTB).
Further information that might be interesting:
- kernel configuration: I use the default configuration for the ARIA
G25 (http://www.acmesystems.it/aria), which is available under
https://github.com/tanzilli/linux-3.10, as basis for my custom kernel
configuration. The only change that I made was to add support for the
rtl8187 chipset (as a module).
- Device tree structure files: I have to use at91-ariag25.dts /
at91sam9x5.dtsi from the kernel from the github repository mentioned
above, because otherwise even the regular kernel 3.10.9 crashes with a
kernel panic. I haven't looked deeper into this problem, because the
release candidate versions of kernel 3.11 boot fine with the DTS files
that are delivered with them and I plan to switch to kernel 3.11 as soon
as it is released, anyway.
I attached the output of the boot process (with your patch applied)
below. The first one is from kernel 3.10.9-rt5 with
CONFIG_PREEMPT_RT_FULL set, the second one is from kernel 3.10.9-rt5
with CONFIG_PREEMPT_RTB.
If you need any further information, please let me know!
Kind regards,
Michael Langfinger
CONFIG_PREEMPT_RT_FULL:
Starting linux kernel ..., machid: 0x1035
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 3.10.9-rt5 (mitarbeiter@ariag25-dev) (gcc version 4.7.3
(Ubuntu/L3
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: Atmel AT91SAM (Device Tree), model: Acme Systems Aria G25
Memory policy: ECC disabled, Data cache writeback
AT91: Detected soc type: at91sam9x5
AT91: Detected soc subtype: at91sam9g25
AT91: sram at 0x300000 of 0x8000 mapped at 0xfef70000
DT missing boot CPU MPIDR[23:0], fall back to default cpu_logical_map
Clocks: CPU 400 MHz, master 133 MHz, main 12.000 MHz
Built 1 zonelists in Zone order, mobility grouping on. Total pages:
65024
Kernel command line: mem=256M console=ttyS0,115200 root=/dev/mmcblk0p2
rootfsty1
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 256MB = 256MB total
Memory: 254852k/254852k available, 7292k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xd0800000 - 0xff000000 ( 744 MB)
lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc044f5e8 (4382 kB)
.init : 0xc0450000 - 0xc04768fc ( 155 kB)
.data : 0xc0478000 - 0xc04a9740 ( 198 kB)
.bss : 0xc04a9740 - 0xc04d5858 ( 177 kB)
SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptible hierarchical RCU implementation.
NR_IRQS:16 nr_irqs:16 16
------------[ cut here ]------------
WARNING: at kernel/irq/manage.c:1268 __free_irq+0x90/0x1a8()
Trying to free already-free IRQ 1
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.9-rt5 #4
[<c000cffc>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c001550c>]
(warn_slowpath_common+0x4)
[<c001550c>] (warn_slowpath_common+0x4c/0x68) from [<c00155a8>]
(warn_slowpath_)
[<c00155a8>] (warn_slowpath_fmt+0x2c/0x3c) from [<c004f84c>]
(__free_irq+0x90/0)
[<c004f84c>] (__free_irq+0x90/0x1a8) from [<c0043d18>]
(clockevents_set_mode+0x)
[<c0043d18>] (clockevents_set_mode+0x28/0x5c) from [<c0043d5c>]
(clockevents_sh)
[<c0043d5c>] (clockevents_shutdown+0x10/0x20) from [<c004403c>]
(clockevents_ex)
[<c004403c>] (clockevents_exchange_device+0x74/0x80) from [<c0044410>]
(tick_no)
[<c0044410>] (tick_notify+0xec/0x2d8) from [<c0035768>]
(notifier_call_chain+0x)
[<c0035768>] (notifier_call_chain+0x38/0x68) from [<c00357b8>]
(raw_notifier_ca)
[<c00357b8>] (raw_notifier_call_chain+0x14/0x18) from [<c0043c58>]
(clockevents)
[<c0043c58>] (clockevents_register_device+0x90/0x128) from [<c0453abc>]
(time_i)
[<c0453abc>] (time_init+0x1c/0x28) from [<c04508c4>]
(start_kernel+0x1b0/0x304)
[<c04508c4>] (start_kernel+0x1b0/0x304) from [<20008040>] (0x20008040)
---[ end trace 0000000000000001 ]---
sched_clock: 32 bits at 128 Hz, resolution 7812500ns, wraps every
3489660920ms
Console: colour dummy device 80x30
Calibrating delay loop... 198.76 BogoMIPS (lpj=775168)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc032aac0 - 0xc032ab18
devtmpfs: initialized
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
AT91: Power Management
AT91: Starting after power-restored wakeup
gpio-at91 fffff400.gpio: at address fefff400
gpio-at91 fffff600.gpio: at address fefff600
gpio-at91 fffff800.gpio: at address fefff800
gpio-at91 fffffa00.gpio: at address fefffa00
pinctrl-at91 pinctrl.2: initialized AT91 pinctrl driver
------------[ cut here ]------------
WARNING: at kernel/irq/manage.c:1268 __free_irq+0x90/0x1a8()
Trying to free already-free IRQ 1
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.10.9-rt5 #4
[<c000cffc>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c001550c>]
(warn_slowpath_common+0x4)
[<c001550c>] (warn_slowpath_common+0x4c/0x68) from [<c00155a8>]
(warn_slowpath_)
[<c00155a8>] (warn_slowpath_fmt+0x2c/0x3c) from [<c004f84c>]
(__free_irq+0x90/0)
[<c004f84c>] (__free_irq+0x90/0x1a8) from [<c0043d18>]
(clockevents_set_mode+0x)
[<c0043d18>] (clockevents_set_mode+0x28/0x5c) from [<c0043ff0>]
(clockevents_ex)
[<c0043ff0>] (clockevents_exchange_device+0x28/0x80) from [<c0044410>]
(tick_no)
[<c0044410>] (tick_notify+0xec/0x2d8) from [<c0035768>]
(notifier_call_chain+0x)
[<c0035768>] (notifier_call_chain+0x38/0x68) from [<c00357b8>]
(raw_notifier_ca)
[<c00357b8>] (raw_notifier_call_chain+0x14/0x18) from [<c0043c58>]
(clockevents)
[<c0043c58>] (clockevents_register_device+0x90/0x128) from [<c0469510>]
(tcb_cl)
[<c0469510>] (tcb_clksrc_init+0x1f0/0x238) from [<c0008890>]
(do_one_initcall+0)
[<c0008890>] (do_one_initcall+0x90/0x148) from [<c0450b00>]
(kernel_init_freeab)
[<c0450b00>] (kernel_init_freeable+0xe8/0x1ac) from [<c0323138>]
(kernel_init+0)
[<c0323138>] (kernel_init+0x8/0xe4) from [<c0009450>]
(ret_from_fork+0x14/0x24)
---[ end trace 0000000000000002 ]---
bio: create slab <bio-0> at 0
at_hdmac ffffec00.dma-controller: Atmel AHB DMA Controller ( cpy slave
), 8 chas
at_hdmac ffffee00.dma-controller: Atmel AHB DMA Controller ( cpy slave
), 8 chas
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
cfg80211: Calling CRDA to update world regulatory domain
Switching to clocksource tcb_clksrc
NET: Registered protocol family 2
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 3, 49152 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP: reno registered
UDP hash table entries: 256 (order: 2, 16384 bytes)
UDP-Lite hash table entries: 256 (order: 2, 16384 bytes)
NET: Registered protocol family 1
msgmni has been set to 497
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
io scheduler noop registered (default)
io scheduler deadline registered
io scheduler cfq registered
fffff200.serial: ttyS0 at MMIO 0xfffff200 (irq = 16) is a ATMEL_SERIAL
console [ttyS0] enabled
f801c000.serial: ttyS1 at MMIO 0xf801c000 (irq = 23) is a ATMEL_SERIAL
f8020000.serial: ttyS2 at MMIO 0xf8020000 (irq = 24) is a ATMEL_SERIAL
brd: module loaded
loop: module loaded
atmel_spi f0000000.spi: version: 0x212
atmel_spi f0000000.spi: DMA channel not available, SPI unable to use
DMA
atmel_spi f0000000.spi: Atmel SPI Controller using PIO only
atmel_spi f0000000.spi: Atmel SPI Controller at 0xf0000000 (irq 28)
atmel_spi f0000000.spi: master is unqueued, this is deprecated
macb f802c000.ethernet (unregistered net_device): invalid hw address,
using ranm
libphy: MACB_mii_bus: probed
macb f802c000.ethernet eth0: Cadence MACB at 0xf802c000 irq 25
(ea:20:33:bb:87:)
macb f802c000.ethernet eth0: attached PHY driver [SMSC LAN8710/LAN8720]
(mii_bu)
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-atmel: EHCI Atmel driver
atmel-ehci 700000.ehci: EHCI Host Controller
atmel-ehci 700000.ehci: new USB bus registered, assigned bus number 1
atmel-ehci 700000.ehci: irq 29, io mem 0x00700000
atmel-ehci 700000.ehci: USB 2.0 started, EHCI 1.00
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 3.10.9-rt5 ehci_hcd
usb usb1: SerialNumber: 700000.ehci
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
usbcore: registered new interface driver usbserial
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial support registered for generic
usbcore: registered new interface driver ftdi_sio
usbserial: USB Serial support registered for FTDI USB Serial Device
usbcore: registered new interface driver pl2303
usbserial: USB Serial support registered for pl2303
mousedev: PS/2 mouse device common for all mice
genirq: Flags mismatch irq 16. 00002080 (at91_rtc) vs. 000152a0
(at91_tick)
at91_rtc fffffeb0.rtc: IRQ 16 already in use.
at91_rtc: probe of fffffeb0.rtc failed with error -16
i2c /dev entries driver
Driver for 1-wire Dallas network protocol.
leds-gpio leds.3: pins are not configured from the driver
ledtrig-cpu: registered to indicate activity on CPUs
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP: cubic registered
NET: Registered protocol family 10
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
Key type dns_resolver registered
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
atmel_mci f0008000.mmc: version: 0x504
atmel_mci f0008000.mmc: using dma0chan0 for DMA transfers
atmel_mci f0008000.mmc: Atmel MCI controller at 0xf0008000 irq 22, 1
slots
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
Waiting 1sec before mounting root device...
mmc0: host does not support reading read-only switch. assuming
write-enable.
mmc0: new high speed SDHC card at address 0002
mmcblk0: mmc0:0002 00000 14.9 GiB
mmcblk0: p1 p2 p3
EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts:
(null)
VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
devtmpfs: mounted
Freeing unused kernel memory: 152K (c0450000 - c0476000)
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
udevd[620]: starting version 175
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
at91_ohci 600000.ohci: AT91 OHCI
at91_ohci 600000.ohci: new USB bus registered, assigned bus number 2
at91_ohci 600000.ohci: irq 29, io mem 0x00600000
usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
at91_i2c f8010000.i2c: using dma0chan1 (tx) and dma0chan2 (rx) for DMA
transfers
at91_i2c f8010000.i2c: AT91 i2c bus driver.
usb usb2: Product: AT91 OHCI
usb usb2: Manufacturer: Linux 3.10.9-rt5 ohci_hcd
usb usb2: SerialNumber: at91
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 3 ports detected
EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts:
(null)
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
macb f802c000.ethernet eth0: link up (100/Full)
IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
[ the last two lines are repeated several times, then the system hangs
]
CONFIG_PREEMPT_RTB:
Starting linux kernel ..., machid: 0x1035
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 3.10.9-rt5 (mitarbeiter@ariag25-dev) (gcc version 4.7.3
(Ubuntu/L3
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: Atmel AT91SAM (Device Tree), model: Acme Systems Aria G25
Memory policy: ECC disabled, Data cache writeback
AT91: Detected soc type: at91sam9x5
AT91: Detected soc subtype: at91sam9g25
AT91: sram at 0x300000 of 0x8000 mapped at 0xfef70000
DT missing boot CPU MPIDR[23:0], fall back to default cpu_logical_map
Clocks: CPU 400 MHz, master 133 MHz, main 12.000 MHz
Built 1 zonelists in Zone order, mobility grouping on. Total pages:
65024
Kernel command line: mem=256M console=ttyS0,115200 root=/dev/mmcblk0p2
rootfsty1
PID hash table entries: 1024 (order: 0, 4096 bytes)
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 256MB = 256MB total
Memory: 254864k/254864k available, 7280k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xd0800000 - 0xff000000 ( 744 MB)
lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc045b484 (4430 kB)
.init : 0xc045c000 - 0xc048239c ( 153 kB)
.data : 0xc0484000 - 0xc04b2a80 ( 187 kB)
.bss : 0xc04b2a80 - 0xc04d3a08 ( 132 kB)
SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Preemptible hierarchical RCU implementation.
NR_IRQS:16 nr_irqs:16 16
------------[ cut here ]------------
WARNING: at kernel/irq/manage.c:1268 __free_irq+0x90/0x190()
Trying to free already-free IRQ 1
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.9-rt5 #5
[<c000d000>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c0015768>]
(warn_slowpath_common+0x4)
[<c0015768>] (warn_slowpath_common+0x4c/0x68) from [<c0015804>]
(warn_slowpath_)
[<c0015804>] (warn_slowpath_fmt+0x2c/0x3c) from [<c0050b5c>]
(__free_irq+0x90/0)
[<c0050b5c>] (__free_irq+0x90/0x190) from [<c0045408>]
(clockevents_set_mode+0x)
[<c0045408>] (clockevents_set_mode+0x28/0x5c) from [<c004544c>]
(clockevents_sh)
[<c004544c>] (clockevents_shutdown+0x10/0x20) from [<c0045720>]
(clockevents_ex)
[<c0045720>] (clockevents_exchange_device+0x74/0x80) from [<c0045ab0>]
(tick_no)
[<c0045ab0>] (tick_notify+0xec/0x2c0) from [<c0036ff8>]
(notifier_call_chain+0x)
[<c0036ff8>] (notifier_call_chain+0x38/0x68) from [<c0037048>]
(raw_notifier_ca)
[<c0037048>] (raw_notifier_call_chain+0x14/0x18) from [<c0045354>]
(clockevents)
[<c0045354>] (clockevents_register_device+0x90/0x11c) from [<c045fabc>]
(time_i)
[<c045fabc>] (time_init+0x1c/0x28) from [<c045c8c0>]
(start_kernel+0x1ac/0x300)
[<c045c8c0>] (start_kernel+0x1ac/0x300) from [<20008040>] (0x20008040)
---[ end trace 1b75b31a2719ed1c ]---
sched_clock: 32 bits at 128 Hz, resolution 7812500ns, wraps every
3489660920ms
Console: colour dummy device 80x30
Calibrating delay loop... 198.76 BogoMIPS (lpj=775168)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc033b200 - 0xc033b258
devtmpfs: initialized
pinctrl core: initialized pinctrl subsystem
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
AT91: Power Management
AT91: Starting after power-restored wakeup
gpio-at91 fffff400.gpio: at address fefff400
gpio-at91 fffff600.gpio: at address fefff600
gpio-at91 fffff800.gpio: at address fefff800
gpio-at91 fffffa00.gpio: at address fefffa00
pinctrl-at91 pinctrl.2: initialized AT91 pinctrl driver
------------[ cut here ]------------
WARNING: at kernel/irq/manage.c:1268 __free_irq+0x90/0x190()
Trying to free already-free IRQ 1
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.10.9-rt5 #5
[<c000d000>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c0015768>]
(warn_slowpath_common+0x4)
[<c0015768>] (warn_slowpath_common+0x4c/0x68) from [<c0015804>]
(warn_slowpath_)
[<c0015804>] (warn_slowpath_fmt+0x2c/0x3c) from [<c0050b5c>]
(__free_irq+0x90/0)
[<c0050b5c>] (__free_irq+0x90/0x190) from [<c0045408>]
(clockevents_set_mode+0x)
[<c0045408>] (clockevents_set_mode+0x28/0x5c) from [<c00456d4>]
(clockevents_ex)
[<c00456d4>] (clockevents_exchange_device+0x28/0x80) from [<c0045ab0>]
(tick_no)
[<c0045ab0>] (tick_notify+0xec/0x2c0) from [<c0036ff8>]
(notifier_call_chain+0x)
[<c0036ff8>] (notifier_call_chain+0x38/0x68) from [<c0037048>]
(raw_notifier_ca)
[<c0037048>] (raw_notifier_call_chain+0x14/0x18) from [<c0045354>]
(clockevents)
[<c0045354>] (clockevents_register_device+0x90/0x11c) from [<c0475220>]
(tcb_cl)
[<c0475220>] (tcb_clksrc_init+0x1f0/0x238) from [<c0008880>]
(do_one_initcall+0)
[<c0008880>] (do_one_initcall+0x90/0x148) from [<c045cafc>]
(kernel_init_freeab)
[<c045cafc>] (kernel_init_freeable+0xe8/0x1ac) from [<c03337ec>]
(kernel_init+0)
[<c03337ec>] (kernel_init+0x8/0xe4) from [<c0009450>]
(ret_from_fork+0x14/0x24)
---[ end trace 1b75b31a2719ed1d ]---
bio: create slab <bio-0> at 0
at_hdmac ffffec00.dma-controller: Atmel AHB DMA Controller ( cpy slave
), 8 chas
at_hdmac ffffee00.dma-controller: Atmel AHB DMA Controller ( cpy slave
), 8 chas
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Switching to clocksource tcb_clksrc
cfg80211: Calling CRDA to update world regulatory domain
NET: Registered protocol family 2
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
msgmni has been set to 497
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
io scheduler noop registered (default)
io scheduler deadline registered
io scheduler cfq registered
fffff200.serial: ttyS0 at MMIO 0xfffff200 (irq = 16) is a ATMEL_SERIAL
console [ttyS0] enabled
f801c000.serial: ttyS1 at MMIO 0xf801c000 (irq = 23) is a ATMEL_SERIAL
f8020000.serial: ttyS2 at MMIO 0xf8020000 (irq = 24) is a ATMEL_SERIAL
brd: module loaded
loop: module loaded
atmel_spi f0000000.spi: version: 0x212
atmel_spi f0000000.spi: DMA channel not available, SPI unable to use
DMA
atmel_spi f0000000.spi: Atmel SPI Controller using PIO only
atmel_spi f0000000.spi: Atmel SPI Controller at 0xf0000000 (irq 28)
atmel_spi f0000000.spi: master is unqueued, this is deprecated
macb f802c000.ethernet (unregistered net_device): invalid hw address,
using ranm
libphy: MACB_mii_bus: probed
macb f802c000.ethernet eth0: Cadence MACB at 0xf802c000 irq 25
(02:47:d1:42:ed:)
macb f802c000.ethernet eth0: attached PHY driver [SMSC LAN8710/LAN8720]
(mii_bu)
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-atmel: EHCI Atmel driver
atmel-ehci 700000.ehci: EHCI Host Controller
atmel-ehci 700000.ehci: new USB bus registered, assigned bus number 1
atmel-ehci 700000.ehci: irq 29, io mem 0x00700000
atmel-ehci 700000.ehci: USB 2.0 started, EHCI 1.00
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 3.10.9-rt5 ehci_hcd
usb usb1: SerialNumber: 700000.ehci
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
usbcore: registered new interface driver usbserial
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial support registered for generic
usbcore: registered new interface driver ftdi_sio
usbserial: USB Serial support registered for FTDI USB Serial Device
usbcore: registered new interface driver pl2303
usbserial: USB Serial support registered for pl2303
mousedev: PS/2 mouse device common for all mice
genirq: Flags mismatch irq 16. 00002080 (at91_rtc) vs. 000152a0
(at91_tick)
at91_rtc fffffeb0.rtc: IRQ 16 already in use.
at91_rtc: probe of fffffeb0.rtc failed with error -16
i2c /dev entries driver
Driver for 1-wire Dallas network protocol.
leds-gpio leds.3: pins are not configured from the driver
ledtrig-cpu: registered to indicate activity on CPUs
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP: cubic registered
NET: Registered protocol family 10
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
Key type dns_resolver registered
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
atmel_mci f0008000.mmc: version: 0x504
atmel_mci f0008000.mmc: using dma0chan0 for DMA transfers
atmel_mci f0008000.mmc: Atmel MCI controller at 0xf0008000 irq 22, 1
slots
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
Waiting 1sec before mounting root device...
mmc0: host does not support reading read-only switch. assuming
write-enable.
mmc0: new high speed SDHC card at address 0002
mmcblk0: mmc0:0002 00000 14.9 GiB
mmcblk0: p1 p2 p3
EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts:
(null)
VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
devtmpfs: mounted
Freeing unused kernel memory: 152K (c045c000 - c0482000)
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
genirq: Flags mismatch irq 16. 00002080 (ttyS0) vs. 000152a0
(at91_tick)
atmel_serial: atmel_startup - Can't get irq
udevd[614]: starting version 175
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
at91_ohci 600000.ohci: AT91 OHCI
at91_ohci 600000.ohci: new USB bus registered, assigned bus number 2
at91_ohci 600000.ohci: irq 29, io mem 0x00600000
at91_i2c f8010000.i2c: using dma0chan1 (tx) and dma0chan2 (rx) for DMA
transfers
usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
at91_i2c f8010000.i2c: AT91 i2c bus driver.
usb usb2: Product: AT91 OHCI
usb usb2: Manufacturer: Linux 3.10.9-rt5 ohci_hcd
usb usb2: SerialNumber: at91
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 3 ports detected
EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
------------[ cut here ]------------
Kernel BUG at c011cd20 [verbose debug info unavailable]
Internal error: Oops - BUG: 0 [#1] PREEMPT ARM
Modules linked in: i2c_at91 ohci_hcd
CPU: 0 PID: 853 Comm: checkroot.sh Tainted: G W 3.10.9-rt5 #5
task: cf892b80 ti: cecd2000 task.ti: cecd2000
PC is at do_get_write_access+0x320/0x474
LR is at do_get_write_access+0x320/0x474
pc : [<c011cd20>] lr : [<c011cd20>] psr: 20000013
sp : cecd3d00 ip : 000002a4 fp : c0496328
r10: cf898c00 r9 : ffff6f0d r8 : cf499460
r7 : 00000000 r6 : cf4ed000 r5 : cf40b100 r4 : cf4e8b80
r3 : cecd2000 r2 : 00000002 r1 : 00000002 r0 : 00000001
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0005317f Table: 2ed6c000 DAC: 00000015
Process checkroot.sh (pid: 853, stack limit = 0xcecd21b8)
Stack: (0xcecd3d00 to 0xcecd4000)
3d00: 00000000 cecd3d10 cecd3d40 cfff5000 cf801580 cf499460 c0340024
c008a29c
3d20: 00000029 cf40b100 cf499460 cf4e8b80 cf499460 cf40b100 c0343620
000000f7
3d40: cecd3dc6 cfbae960 c0340024 c011cfb8 cf40b100 cf4f0948 cf499460
c010762c
3d60: c0343620 000000f7 cf4f0948 cf499460 cf898800 00000000 cf996600
c00e7290
3d80: cf8188d0 cf402a18 00000000 00000000 00000000 00000000 00000000
00000000
3da0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000
00000000
3dc0: 00000000 002f0000 cfbae960 cf4f0948 cfbae960 c00e71e8 cfbae968
cecd3e7c
3de0: c0340024 c008d574 cecd3e7c 00000000 cfbae960 cecd3e80 cfbae960
c008d64c
3e00: cecd3ec0 c009b7d4 cecd3ec0 cf423438 cecd2000 ced47015 00000000
00020020
3e20: 00000000 00000000 cf8188d0 cf4135d8 00000000 00000021 73e14981
cf4f0948
3e40: 00000000 00000000 ffffff9c cecd3ec0 00000000 cfbae960 cecd2000
cecd3f38
3e60: 0002fbc4 c0340024 00000001 c009ba84 cecd3e7c 00000001 00000000
00000000
3e80: cf8188d0 cf442d48 00000000 b6e68000 000005b7 c0340024 00000001
cecd3f38
3ea0: ffffff9c 00000001 0002fbc4 0002fbb8 00000001 c009c090 00000041
ceca14b8
3ec0: cf8188d0 cf442d48 73e14981 00000008 ced47015 c0099628 00000000
cf402a18
3ee0: cf4f0948 00000101 00000002 00000000 00000000 b6e688da cecd3fb0
00000003
3f00: cf801d80 cf892b80 0002fbb8 c008a29c c04c5f78 cf892b80 00000000
ced47010
3f20: cecd2000 cf892b80 ced47010 c0093bf0 cf892b80 cecd2000 ced47010
00000000
3f40: 00000000 00000000 cfacea00 cecd2000 cf892b80 ced47010 00000001
c0094fe4
3f60: 00000ff0 0002fbf4 00000000 cf892cbc 00000000 ced47000 0002fbc4
0002fbb8
3f80: 0000000b c0009524 cecd2000 00000000 0002fbb8 c0095518 0002fbb8
0002fbf4
3fa0: 0002fbc4 c00093c0 0002fbb8 0002fbf4 0002fbf4 0002fbb8 0002fbc4
00000000
3fc0: 0002fbb8 0002fbf4 0002fbc4 0000000b 0002fbc4 000277bc 00025764
0002fbb8
3fe0: b6ef1160 be8602b0 0000ce34 b6ef116c 60000010 0002fbf4 00004000
001a0a42
[<c011cd20>] (do_get_write_access+0x320/0x474) from [<c011cfb8>]
(jbd2_journal_)
[<c011cfb8>] (jbd2_journal_get_write_access+0x24/0x38) from
[<c010762c>] (__ext)
[<c010762c>] (__ext4_journal_get_write_access+0x50/0x68) from
[<c00e7290>] (ext)
[<c00e7290>] (ext4_file_open+0xa8/0x1f4) from [<c008d574>]
(do_dentry_open.isra)
[<c008d574>] (do_dentry_open.isra.14+0x1b8/0x26c) from [<c008d64c>]
(finish_ope)
[<c008d64c>] (finish_open+0x24/0x38) from [<c009b7d4>]
(do_last.isra.46+0x91c/0)
[<c009b7d4>] (do_last.isra.46+0x91c/0xb24) from [<c009ba84>]
(path_openat+0xa8/)
[<c009ba84>] (path_openat+0xa8/0x404) from [<c009c090>]
(do_filp_open+0x2c/0x78)
[<c009c090>] (do_filp_open+0x2c/0x78) from [<c0093bf0>]
(open_exec+0x34/0x11c)
[<c0093bf0>] (open_exec+0x34/0x11c) from [<c0094fe4>]
(do_execve+0x1a0/0x49c)
[<c0094fe4>] (do_execve+0x1a0/0x49c) from [<c0095518>]
(SyS_execve+0x30/0x44)
[<c0095518>] (SyS_execve+0x30/0x44) from [<c00093c0>]
(ret_fast_syscall+0x0/0x2)
Code: 1a000003 ea000032 e3a00001 ebfc72f8 (e7f001f2)
---[ end trace 1b75b31a2719ed1f ]---
note: checkroot.sh[853] exited with preempt_count 2
BUG: scheduling while atomic: checkroot.sh/853/0x40000003
Modules linked in: i2c_at91 ohci_hcd
Preemption disabled at:[< (null)>] (null)
CPU: 0 PID: 853 Comm: checkroot.sh Tainted: G D W 3.10.9-rt5 #5
[<c000d000>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c0335760>]
(__schedule_bug+0x7c/0xa0)
[<c0335760>] (__schedule_bug+0x7c/0xa0) from [<c0339868>]
(__schedule+0x58/0x2e)
[<c0339868>] (__schedule+0x58/0x2e0) from [<c0039c6c>]
(__cond_resched+0x20/0x3)
[<c0039c6c>] (__cond_resched+0x20/0x38) from [<c0339b84>]
(_cond_resched+0x3c/0)
[<c0339b84>] (_cond_resched+0x3c/0x44) from [<c00a7280>]
(put_files_struct+0x80)
[<c00a7280>] (put_files_struct+0x80/0xd0) from [<c001a450>]
(do_exit+0x32c/0x86)
[<c001a450>] (do_exit+0x32c/0x86c) from [<c000b7a8>] (die+0x218/0x254)
[<c000b7a8>] (die+0x218/0x254) from [<c00085b0>]
(do_undefinstr+0x1ac/0x1cc)
[<c00085b0>] (do_undefinstr+0x1ac/0x1cc) from [<c00090cc>]
(__und_svc_finish+0x)
Exception stack(0xcecd3cb8 to 0xcecd3d00)
3ca0: 00000001
00000002
3cc0: 00000002 cecd2000 cf4e8b80 cf40b100 cf4ed000 00000000 cf499460
ffff6f0d
3ce0: cf898c00 c0496328 000002a4 cecd3d00 c011cd20 c011cd20 20000013
ffffffff
[<c00090cc>] (__und_svc_finish+0x0/0x14) from [<c011cd20>]
(do_get_write_access)
[<c011cd20>] (do_get_write_access+0x320/0x474) from [<c011cfb8>]
(jbd2_journal_)
[<c011cfb8>] (jbd2_journal_get_write_access+0x24/0x38) from
[<c010762c>] (__ext)
[<c010762c>] (__ext4_journal_get_write_access+0x50/0x68) from
[<c00e7290>] (ext)
[<c00e7290>] (ext4_file_open+0xa8/0x1f4) from [<c008d574>]
(do_dentry_open.isra)
[<c008d574>] (do_dentry_open.isra.14+0x1b8/0x26c) from [<c008d64c>]
(finish_ope)
[<c008d64c>] (finish_open+0x24/0x38) from [<c009b7d4>]
(do_last.isra.46+0x91c/0)
[<c009b7d4>] (do_last.isra.46+0x91c/0xb24) from [<c009ba84>]
(path_openat+0xa8/)
[<c009ba84>] (path_openat+0xa8/0x404) from [<c009c090>]
(do_filp_open+0x2c/0x78)
[<c009c090>] (do_filp_open+0x2c/0x78) from [<c0093bf0>]
(open_exec+0x34/0x11c)
[<c0093bf0>] (open_exec+0x34/0x11c) from [<c0094fe4>]
(do_execve+0x1a0/0x49c)
[<c0094fe4>] (do_execve+0x1a0/0x49c) from [<c0095518>]
(SyS_execve+0x30/0x44)
[<c0095518>] (SyS_execve+0x30/0x44) from [<c00093c0>]
(ret_fast_syscall+0x0/0x2)
BUG: scheduling while atomic: checkroot.sh/853/0x40000003
Modules linked in: i2c_at91 ohci_hcd
Preemption disabled at:[< (null)>] (null)
CPU: 0 PID: 853 Comm: checkroot.sh Tainted: G D W 3.10.9-rt5 #5
[<c000d000>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c0335760>]
(__schedule_bug+0x7c/0xa0)
[<c0335760>] (__schedule_bug+0x7c/0xa0) from [<c0339868>]
(__schedule+0x58/0x2e)
[<c0339868>] (__schedule+0x58/0x2e0) from [<c0039c6c>]
(__cond_resched+0x20/0x3)
[<c0039c6c>] (__cond_resched+0x20/0x38) from [<c0339b84>]
(_cond_resched+0x3c/0)
[<c0339b84>] (_cond_resched+0x3c/0x44) from [<c002fd98>]
(task_work_run+0x94/0x)
[<c002fd98>] (task_work_run+0x94/0xa4) from [<c001a464>]
(do_exit+0x340/0x86c)
[<c001a464>] (do_exit+0x340/0x86c) from [<c000b7a8>] (die+0x218/0x254)
[<c000b7a8>] (die+0x218/0x254) from [<c00085b0>]
(do_undefinstr+0x1ac/0x1cc)
[<c00085b0>] (do_undefinstr+0x1ac/0x1cc) from [<c00090cc>]
(__und_svc_finish+0x)
Exception stack(0xcecd3cb8 to 0xcecd3d00)
3ca0: 00000001
00000002
3cc0: 00000002 cecd2000 cf4e8b80 cf40b100 cf4ed000 00000000 cf499460
ffff6f0d
3ce0: cf898c00 c0496328 000002a4 cecd3d00 c011cd20 c011cd20 20000013
ffffffff
[<c00090cc>] (__und_svc_finish+0x0/0x14) from [<c011cd20>]
(do_get_write_access)
[<c011cd20>] (do_get_write_access+0x320/0x474) from [<c011cfb8>]
(jbd2_journal_)
[<c011cfb8>] (jbd2_journal_get_write_access+0x24/0x38) from
[<c010762c>] (__ext)
[<c010762c>] (__ext4_journal_get_write_access+0x50/0x68) from
[<c00e7290>] (ext)
[<c00e7290>] (ext4_file_open+0xa8/0x1f4) from [<c008d574>]
(do_dentry_open.isra)
[<c008d574>] (do_dentry_open.isra.14+0x1b8/0x26c) from [<c008d64c>]
(finish_ope)
[<c008d64c>] (finish_open+0x24/0x38) from [<c009b7d4>]
(do_last.isra.46+0x91c/0)
[<c009b7d4>] (do_last.isra.46+0x91c/0xb24) from [<c009ba84>]
(path_openat+0xa8/)
[<c009ba84>] (path_openat+0xa8/0x404) from [<c009c090>]
(do_filp_open+0x2c/0x78)
[<c009c090>] (do_filp_open+0x2c/0x78) from [<c0093bf0>]
(open_exec+0x34/0x11c)
[<c0093bf0>] (open_exec+0x34/0x11c) from [<c0094fe4>]
(do_execve+0x1a0/0x49c)
[<c0094fe4>] (do_execve+0x1a0/0x49c) from [<c0095518>]
(SyS_execve+0x30/0x44)
[<c0095518>] (SyS_execve+0x30/0x44) from [<c00093c0>]
(ret_fast_syscall+0x0/0x2)
------------[ cut here ]------------
Kernel BUG at c011cd20 [verbose debug info unavailable]
Internal error: Oops - BUG: 0 [#2] PREEMPT ARM
Modules linked in: i2c_at91 ohci_hcd
CPU: 0 PID: 856 Comm: rm Tainted: G D W 3.10.9-rt5 #5
task: cf893cc0 ti: cecac000 task.ti: cecac000
PC is at do_get_write_access+0x320/0x474
LR is at do_get_write_access+0x320/0x474
pc : [<c011cd20>] lr : [<c011cd20>] psr: 20000013
sp : cecade20 ip : 000002a4 fp : c0496328
r10: cf898c00 r9 : ffff6f49 r8 : cf4994a0
r7 : 00000000 r6 : cf4ed000 r5 : cf40f340 r4 : cf4e8bc0
r3 : cecac000 r2 : 00000002 r1 : 00000002 r0 : 00000001
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0005317f Table: 2ec84000 DAC: 00000015
Process rm (pid: 856, stack limit = 0xcecac1b8)
Stack: (0xcecade20 to 0xcecae000)
de20: 00000000 cecade30 c1034000 00001000 cf801580 cf4994a0 00000000
c008a29c
de40: 02000029 cf40f340 cf4994a0 cf4e8bc0 cf4994a0 cf40f340 c0343d3b
00000871
de60: 0001e0a0 c10345c4 00000000 c011cfb8 cf40f340 cf411668 cf4994a0
c010762c
de80: c0343d3b 00000871 cf411668 cf42d438 cf40f340 cf4994a0 00000000
c00f6d7c
dea0: 00000abd 00000018 ced46000 0001e0a0 cf40f340 c0107490 00000abd
cf4994a0
dec0: cf42d438 cf411668 00000000 ced46000 cf40f340 c00f7ed0 0001e0a0
ffffff9c
dee0: 00000000 c10345c4 cf442c38 cf442c38 cf411668 00000000 ced46000
cf442c38
df00: 00000000 cf411668 00000000 ced46000 ffffff9c c009a4e4 cf411668
cf442c38
df20: 00000000 cf42d438 cf442c38 c009a640 cf8188d0 cf406440 01afef23
00000004
df40: ced46015 c0099628 00000000 cf402a18 cf411668 00000000 00000002
00000000
df60: 00000000 00000000 00000000 00000000 0000000c 00000000 52209f99
14a171c4
df80: 45984f0e 34f15674 0001f268 beb4bcdc 00000000 00000148 c0009524
cecac000
dfa0: 00000000 c00093c0 0001f268 beb4bcdc ffffff9c 0001e0a0 00000000
00000000
dfc0: 0001f268 beb4bcdc 00000000 00000148 0001e038 00000002 00000000
00000000
dfe0: b6f2b760 beb4bb98 00009e50 b6f2b76c 60000010 ffffff9c 4a001a48
501c1010
[<c011cd20>] (do_get_write_access+0x320/0x474) from [<c011cfb8>]
(jbd2_journal_)
[<c011cfb8>] (jbd2_journal_get_write_access+0x24/0x38) from
[<c010762c>] (__ext)
[<c010762c>] (__ext4_journal_get_write_access+0x50/0x68) from
[<c00f6d7c>] (ext)
[<c00f6d7c>] (ext4_delete_entry+0x88/0x10c) from [<c00f7ed0>]
(ext4_unlink+0xe8)
[<c00f7ed0>] (ext4_unlink+0xe8/0x24c) from [<c009a4e4>]
(vfs_unlink+0x5c/0xf4)
[<c009a4e4>] (vfs_unlink+0x5c/0xf4) from [<c009a640>]
(do_unlinkat+0xc4/0x170)
[<c009a640>] (do_unlinkat+0xc4/0x170) from [<c00093c0>]
(ret_fast_syscall+0x0/0)
Code: 1a000003 ea000032 e3a00001 ebfc72f8 (e7f001f2)
---[ end trace 1b75b31a2719ed20 ]---
note: rm[856] exited with preempt_count 2
BUG: scheduling while atomic: rm/856/0x40000003
Modules linked in: i2c_at91 ohci_hcd
Preemption disabled at:[< (null)>] (null)
CPU: 0 PID: 856 Comm: rm Tainted: G D W 3.10.9-rt5 #5
[<c000d000>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c0335760>]
(__schedule_bug+0x7c/0xa0)
[<c0335760>] (__schedule_bug+0x7c/0xa0) from [<c0339868>]
(__schedule+0x58/0x2e)
[<c0339868>] (__schedule+0x58/0x2e0) from [<c0039c6c>]
(__cond_resched+0x20/0x3)
[<c0039c6c>] (__cond_resched+0x20/0x38) from [<c0339b84>]
(_cond_resched+0x3c/0)
[<c0339b84>] (_cond_resched+0x3c/0x44) from [<c00a7280>]
(put_files_struct+0x80)
[<c00a7280>] (put_files_struct+0x80/0xd0) from [<c001a450>]
(do_exit+0x32c/0x86)
[<c001a450>] (do_exit+0x32c/0x86c) from [<c000b7a8>] (die+0x218/0x254)
[<c000b7a8>] (die+0x218/0x254) from [<c00085b0>]
(do_undefinstr+0x1ac/0x1cc)
[<c00085b0>] (do_undefinstr+0x1ac/0x1cc) from [<c00090cc>]
(__und_svc_finish+0x)
Exception stack(0xcecaddd8 to 0xcecade20)
ddc0: 00000001
00000002
dde0: 00000002 cecac000 cf4e8bc0 cf40f340 cf4ed000 00000000 cf4994a0
ffff6f49
de00: cf898c00 c0496328 000002a4 cecade20 c011cd20 c011cd20 20000013
ffffffff
[<c00090cc>] (__und_svc_finish+0x0/0x14) from [<c011cd20>]
(do_get_write_access)
[<c011cd20>] (do_get_write_access+0x320/0x474) from [<c011cfb8>]
(jbd2_journal_)
[<c011cfb8>] (jbd2_journal_get_write_access+0x24/0x38) from
[<c010762c>] (__ext)
[<c010762c>] (__ext4_journal_get_write_access+0x50/0x68) from
[<c00f6d7c>] (ext)
[<c00f6d7c>] (ext4_delete_entry+0x88/0x10c) from [<c00f7ed0>]
(ext4_unlink+0xe8)
[<c00f7ed0>] (ext4_unlink+0xe8/0x24c) from [<c009a4e4>]
(vfs_unlink+0x5c/0xf4)
[<c009a4e4>] (vfs_unlink+0x5c/0xf4) from [<c009a640>]
(do_unlinkat+0xc4/0x170)
[<c009a640>] (do_unlinkat+0xc4/0x170) from [<c00093c0>]
(ret_fast_syscall+0x0/0)
------------[ cut here ]------------
Kernel BUG at c011cd20 [verbose debug info unavailable]
Internal error: Oops - BUG: 0 [#3] PREEMPT ARM
Modules linked in: i2c_at91 ohci_hcd
CPU: 0 PID: 850 Comm: logsave Tainted: G D W 3.10.9-rt5 #5
task: cf893140 ti: ced3c000 task.ti: ced3c000
PC is at do_get_write_access+0x320/0x474
LR is at do_get_write_access+0x320/0x474
pc : [<c011cd20>] lr : [<c011cd20>] psr: 20000013
sp : ced3dcd8 ip : 000002a4 fp : c0496328
r10: cf898c00 r9 : ffff6f61 r8 : cf499500
r7 : 00000000 r6 : cf4ed000 r5 : cf40b100 r4 : cf4e8b80
r3 : ced3c000 r2 : 00000002 r1 : 00000002 r0 : 00000001
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0005317f Table: 2ec18000 DAC: 00000015
Process logsave (pid: 850, stack limit = 0xced3c1b8)
Stack: (0xced3dcd8 to 0xced3e000)
dcc0: 00000000
ced3dce8
dce0: cf898c00 00000000 ced3df78 c011c2cc ced3ddec c00a4dec 00000050
cf996600
dd00: cf4eefd8 cf4e8b80 cf499500 cf40b100 c0343ddd 000009e8 cf4eefd8
00000000
dd20: ced3df78 c011cfb8 cf40b100 cf4eefd8 cf499500 c010762c c0343ddd
000009e8
dd40: cf4eefd8 cf499500 cf996600 cf499500 cf4eefb4 c00f72e0 00000000
cf4eefd8
dd60: 00000000 c0107490 00001274 00000000 cf499500 cf4eefd8 ced3de00
00000000
dd80: 00000000 c00efabc cf442700 00000000 cf801600 cf8188d0 ced3df78
c008a29c
dda0: 0000a068 18ada959 ced3ddd8 ced3ddd8 00000000 cf4426e8 000081a0
0000a068
ddc0: cf4eefd8 ced3de00 ced3df78 c00a61d8 cf4426e8 ced3de00 0000000b
18ada959
dde0: cf4426e8 00000001 cf4eefd8 ced3dec0 cf818d20 ced3debc cf4eeda8
c008d6d4
de00: 0000a068 c049994c cf818d20 cf4eefd8 00000000 00000000 0000000b
18ada959
de20: 0000000b 18ada959 0000000b 18ada959 cf818d20 ced3dec0 cf818d20
ced3df00
de40: 00000001 c009b884 00008060 cf818d20 ced3c000 ced4301e 00000000
00000241
de60: 00000001 00000001 cf8188d0 cf442770 00000000 00000022 015547fe
cf4eefd8
de80: cf8188d0 cf442770 ffffff9c ced3df00 00000000 cf818d20 ced3c000
ced43000
dea0: ced3c000 ced3df78 bea85f18 c009ba84 ced3debc c003a1c0 00000000
00000002
dec0: cf8188d0 cf4426e8 ced3defc c0339aa0 8ff9c445 ced3df78 00000001
ced43000
dee0: ffffff9c c0009524 ced3c000 00000000 bea85f18 c009c090 00000041
ced3df40
df00: cf8188d0 cf4426e8 595547fe 00000009 ced4301e c0099628 cf8188d0
cf402a18
df20: cf4eefd8 00000301 00000002 00000000 00000000 00000001 00000003
cfa793c8
df40: cfa793c0 ffffff9c bea85f18 c00a7480 00000241 00000001 ced43000
00000003
df60: 00000001 ced43000 ffffff9c c008e520 ced3df6c 00000001 00000241
000081a4
df80: 00000022 00000300 bea85ae0 00000001 00000241 000120ac 00000005
c0009524
dfa0: 00000000 c00093c0 00000001 00000241 bea85f18 00000241 000001a4
00000000
dfc0: 00000001 00000241 000120ac 00000005 00000003 bea85c34 00000000
bea85f18
dfe0: 00012098 bea85b90 00008dac b6f0fcdc 60000010 bea85f18 41000048
50081000
[<c011cd20>] (do_get_write_access+0x320/0x474) from [<c011cfb8>]
(jbd2_journal_)
[<c011cfb8>] (jbd2_journal_get_write_access+0x24/0x38) from
[<c010762c>] (__ext)
[<c010762c>] (__ext4_journal_get_write_access+0x50/0x68) from
[<c00f72e0>] (ext)
[<c00f72e0>] (ext4_orphan_add+0x84/0x198) from [<c00efabc>]
(ext4_setattr+0x510)
[<c00efabc>] (ext4_setattr+0x510/0x54c) from [<c00a61d8>]
(notify_change+0x210/)
[<c00a61d8>] (notify_change+0x210/0x2fc) from [<c008d6d4>]
(do_truncate+0x74/0x)
[<c008d6d4>] (do_truncate+0x74/0x98) from [<c009b884>]
(do_last.isra.46+0x9cc/0)
[<c009b884>] (do_last.isra.46+0x9cc/0xb24) from [<c009ba84>]
(path_openat+0xa8/)
[<c009ba84>] (path_openat+0xa8/0x404) from [<c009c090>]
(do_filp_open+0x2c/0x78)
[<c009c090>] (do_filp_open+0x2c/0x78) from [<c008e520>]
(do_sys_open+0xe8/0x174)
[<c008e520>] (do_sys_open+0xe8/0x174) from [<c00093c0>]
(ret_fast_syscall+0x0/0)
Code: 1a000003 ea000032 e3a00001 ebfc72f8 (e7f001f2)
---[ end trace 1b75b31a2719ed21 ]---
note: logsave[850] exited with preempt_count 2
BUG: scheduling while atomic: logsave/850/0x40000003
Modules linked in: i2c_at91 ohci_hcd
Preemption disabled at:[< (null)>] (null)
CPU: 0 PID: 850 Comm: logsave Tainted: G D W 3.10.9-rt5 #5
[<c000d000>] (unwind_backtrace+0x0/0xe0) from [<c000b58c>]
(show_stack+0x10/0x1)
[<c000b58c>] (show_stack+0x10/0x14) from [<c0335760>]
(__schedule_bug+0x7c/0xa0)
[<c0335760>] (__schedule_bug+0x7c/0xa0) from [<c0339868>]
(__schedule+0x58/0x2e)
[<c0339868>] (__schedule+0x58/0x2e0) from [<c0039c6c>]
(__cond_resched+0x20/0x3)
[<c0039c6c>] (__cond_resched+0x20/0x38) from [<c0339b84>]
(_cond_resched+0x3c/0)
[<c0339b84>] (_cond_resched+0x3c/0x44) from [<c00a7280>]
(put_files_struct+0x80)
[<c00a7280>] (put_files_struct+0x80/0xd0) from [<c001a450>]
(do_exit+0x32c/0x86)
[<c001a450>] (do_exit+0x32c/0x86c) from [<c000b7a8>] (die+0x218/0x254)
[<c000b7a8>] (die+0x218/0x254) from [<c00085b0>]
(do_undefinstr+0x1ac/0x1cc)
[<c00085b0>] (do_undefinstr+0x1ac/0x1cc) from [<c00090cc>]
(__und_svc_finish+0x)
Exception stack(0xced3dc90 to 0xced3dcd8)
dc80: 00000001 00000002 00000002
ced3c000
dca0: cf4e8b80 cf40b100 cf4ed000 00000000 cf499500 ffff6f61 cf898c00
c0496328
dcc0: 000002a4 ced3dcd8 c011cd20 c011cd20 20000013 ffffffff
[<c00090cc>] (__und_svc_finish+0x0/0x14) from [<c011cd20>]
(do_get_write_access)
[<c011cd20>] (do_get_write_access+0x320/0x474) from [<c011cfb8>]
(jbd2_journal_)
[<c011cfb8>] (jbd2_journal_get_write_access+0x24/0x38) from
[<c010762c>] (__ext)
[<c010762c>] (__ext4_journal_get_write_access+0x50/0x68) from
[<c00f72e0>] (ext)
[<c00f72e0>] (ext4_orphan_add+0x84/0x198) from [<c00efabc>]
(ext4_setattr+0x510)
[<c00efabc>] (ext4_setattr+0x510/0x54c) from [<c00a61d8>]
(notify_change+0x210/)
[<c00a61d8>] (notify_change+0x210/0x2fc) from [<c008d6d4>]
(do_truncate+0x74/0x)
[<c008d6d4>] (do_truncate+0x74/0x98) from [<c009b884>]
(do_last.isra.46+0x9cc/0)
[<c009b884>] (do_last.isra.46+0x9cc/0xb24) from [<c009ba84>]
(path_openat+0xa8/)
[<c009ba84>] (path_openat+0xa8/0x404) from [<c009c090>]
(do_filp_open+0x2c/0x78)
[<c009c090>] (do_filp_open+0x2c/0x78) from [<c008e520>]
(do_sys_open+0xe8/0x174)
[<c008e520>] (do_sys_open+0xe8/0x174) from [<c00093c0>]
(ret_fast_syscall+0x0/0)
Hello Michael
We have encountered the same warnings with the Atmel SAMA5D35
processor when using the RT_PREEMPT patch. We get the same warnings
with both 3.6.9-rt21 and 3.10.9-rt5 kernels. However, the 3.6.9-rt21
kernel boots just fine, and we also had problems booting the
3.10.9-rt5 kernel. Therefore these warnings and boot hanging might be
unrelated.
What's causing these warnings is still unknown, but at least we got
the 3.10.9-rt5 kernel to boot. The boot problem seems to be caused by
the TCB clock source (tcb_clksrc). You could try to unset the
CONFIG_ATMEL_TCB_CLKSRC option, but this is not optimal configuration
for rt.
I have attached a patch which goes on top of the rt5 patch that seems
to fix the boot hang issue. Could you please report the results if
you
have time to test this patch? Please note that I have not yet done
any
rt-tests with this patch.
BR,
Sami Pietikäinen
Software Developer
Wapice Ltd.
--- a/drivers/clocksource/tcb_clksrc.c 2013-08-29 16:14:14.611335823
+0300
+++ b/drivers/clocksource/tcb_clksrc.c 2013-08-29 16:16:28.129657272
+0300
@@ -192,9 +192,13 @@
clkevt.clk = t2_clk;
tc_irqaction.dev_id = &clkevt;
- timer_clock = clk32k_divisor_idx;
+ timer_clock = divisor_idx;
- clkevt.clkevt.cpumask = cpumask_of(0);
+ if (!divisor)
+ clkevt.freq = 32768;
+ else
+ clkevt.freq = clk_get_rate(t2_clk)/divisor;
+ clkevt.clkevt.cpumask = cpumask_of(0);
clockevents_config_and_register(&clkevt.clkevt, 32768, 1, 0xffff);
--
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