Hi,
when I try to boot kernel 3.10.9-rt5 (or lower) on the Atmel
AT91SAM9G25, I get the following error:
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 #1
[<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 ]---
This happens twice and the system hangs afterwards. I tried with with
CONFIG_PREEMPT_RT_FULL as well as with CONFIG_PREEMPT_RTB, in both cases
I get the same error.
I am no expert in this matter, so I would be grateful for any
assistance that might help me to solve the problem. Thank you!
Kind regards,
Michael Langfinger
P.S.: Below you can find the complete output of the boot sequence, if
it helps.
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 - 0xc04768dc ( 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 #1
[<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 #1
[<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 [<c04694e4>]
(tcb_cl)
[<c04694e4>] (tcb_clksrc_init+0x1c4/0x204) 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
(2a:4d:fa:f3:37:)
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
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