[#3813] On BF537-STAMP, install ad1836 and SPI module, then remove ad1836 module, kernel will crash

Question

Accepted Answer

[#3813] On BF537-STAMP, install ad1836 and SPI module, then remove ad1836 module, kernel will crash

Submitted By: Vivi Li

Open Date

2008-01-04 01:51:14 Close Date

2008-02-20 07:50:52

Priority:

Medium Assignee:

Cliff Cai

Status:

Closed Fixed In Release:

N/A

Found In Release:

N/A Release:

Category:

N/A Board:

N/A

Processor:

N/A Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

toolchain 4.1-2007_Oct_07

App binary format:

N/A

Summary: On BF537-STAMP, install ad1836 and SPI module, then remove ad1836 module, kernel will crash

Details:

Build kernel with ad1836 driver and SPI controller driver as module.

On BF537-STAMP, install ad1836 and SPI module, then remove ad1836 module. Kernel will crash.

Config file is attached.

----

## Starting application at 0x00178000 ...

Linux version 2.6.22.15-ADI-2007R2-pre-svn4075 (test@uclinux51-ad9960-ad1836) (gcc version 4.1.2 (ADI svn)) #57 Thu Jan 3 168

Hardware Trace Active and Enabled

Warning: limiting memory to 56MB due to hardware anomaly 05000263

Recovering from Watchdog event

Compiled for ADSP-BF537 Rev 0.2

Blackfin Linux support by http://blackfin.uclinux.org/

Processor Speed: 500 MHz core clock and 100 MHz System Clock

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

text = 0x00001000-0x00116380

rodata = 0x00117000-0x001659ec

data = 0x00166000-0x00178000

stack = 0x00166000-0x00168000

init = 0x00178000-0x0045c000

bss = 0x0045c000-0x0046bbd0

available = 0x0046bbd0-0x037ff000

DMA Zone = 0x03f00000-0x04000000

Instruction Cache Enabled

Data Cache Enabled (write-through)

Built 1 zonelists. Total pages: 14224

Kernel command line: root=/dev/mtdblock0 rw ip=10.100.4.50:10.100.4.174:10.99.22.174:255.255.255.0:BF537:eth0:off

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 256 (order: 8, 1024 bytes)

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Physical pages: 37ff

Memory available: 52168k/64104k RAM, (2960k init code, 1108k kernel code, 62k data, 1024k dma)

Blackfin Scratchpad data SRAM: 4 KB

Blackfin Data A SRAM: 16 KB (15 KB free)

Blackfin Data B SRAM: 16 KB (16 KB free)

Blackfin Instruction SRAM: 48 KB (39 KB free)

Security Framework v1.0.0 initialized

Mount-cache hash table entries: 512

NET: Registered protocol family 16

Blackfin GPIO Controller

Blackfin DMA Controller

stamp_init(): registering device resources

Generic PHY: Registered new driver

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

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

io scheduler noop registered

io scheduler anticipatory registered (default)

io scheduler cfq registered

Dynamic Power Management Controller Driver v0.1: major=10, minor = 254

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

Serial: Blackfin serial driver

bfin-uart.1: ttyBF0 at MMIO 0xffc00400 (irq = 18) is a BFIN-UART

RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize

SMSC LAN83C185: Registered new driver

bfin_mac_mdio: probed

bfin_mac: attached PHY driver [SMSC LAN83C185] (mii_bus:phy_addr=0:01, irq=-1, mdc_clk=2500000Hz(mdc_div=19)@sclk=100MHz)

bfin_mac: Version 1.1, Blackfin BF53[67] BF527 on-chip Ethernet MAC driver

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

Advanced Linux Sound Architecture Driver Version 1.0.12rc1 (Thu Jun 22 13:55:50 2006 UTC).

ALSA device list:

No soundcards found.

TCP cubic registered

NET: Registered protocol family 1

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting the system clock to 1970-01-01 00:33:24 (2004)

IP-Config: Gateway not on directly connected network.

Freeing unused kernel memory: 2960k freed

dma_alloc_init: dma_page @ 0x00459000 - 256 pages at 0x03f00000

_____________________________________

a8888b. / Welcome to the uClinux distribution \

d888888b. / _ _ \

8P"YP"Y88 / | | |_| __ __ (TM) |

8|o||o|88 _____/ | | _ ____ _ _ \ \/ / |

8' .88 \ | | | | _ \| | | | \ / |

8`._.' Y8. \ | |__ | | | | | |_| | / \ |

d/ `8b. \ \____||_|_| |_|\____|/_/\_\ |

dP . Y8b. \ For embedded processors including |

d8:' " `::88b \ the Analog Devices Blackfin /

d8" 'Y88b \___________________________________/

:8P ' :888

8a. : _a88P For further information, check out:

._/"Yaa_: .| 88P| - http://blackfin.uclinux.org/

\ YP" `| 8P `. - http://docs.blackfin.uclinux.org/

/ \.___.d| .' - http://www.uclinux.org/

`--..__)8888P`._.' jgs/a:f - http://www.analog.com/blackfin

Have a lot of fun...

BusyBox v1.4.1 (2008-01-03 16:22:14 CST) Built-in shell (msh)

Enter 'help' for a list of built-in commands.

root:~>

root:~> modprobe spi_bfin5xx; modprobe snd-ad1836

bfin-spi bfin-spi.0: Blackfin BF5xx on-chip SPI Contoller Driver, Version 1.0, regs_base@ffc00500, dma channel@7

root:~> tone

TONE: generating sine wave at 1000 Hz...

root:~> lsmod

Module Size Used by

snd_ad1836 16296 0

spi_bfin5xx 9120 0

root:~> rmmod snd_ad1836

NULL pointer access (probably)

Kernel OOPS in progress

Defered Exception context

CURRENT PROCESS:

COMM=rmmod PID=123

TEXT = 0x03180000-0x031d6dc8 DATA = 0x00330dc8-0x0033c0d4

BSS = 0x0033c0d4-0x00380000 USER-STACK = 0x0039feb0

return address: [0x0009e78a]; contents of:

0x0009e760: 6f46 3208 3229 3046 6480 b130 b170 3076

0x0009e770: e140 0009 e100 e7ac 6466 b128 b16e bca9

0x0009e780: e50a 0053 6005 b0f5 3041 [e512] 0026 0062

0x0009e790: 0c00 3038 1404 3006 e303 b5d8 6cc6 0127

SEQUENCER STATUS:

SEQSTAT: 00000027 IPEND: 8030 SYSCFG: 0006

HWERRCAUSE: 0x0

EXCAUSE : 0x27

physical IVG15 asserted : <0xffa011c8> { _evt_system_call + 0x0 }

logical irq 6 mapped : <0xffa00250> { _timer_interrupt + 0x0 }

logical irq 18 mapped : <0x00091f10> { _bfin_serial_dma_rx_int + 0x0 }

logical irq 19 mapped : <0x00091cfc> { _bfin_serial_dma_tx_int + 0x0 }

logical irq 24 mapped : <0x0009b5d0> { _bf537mac_interrupt + 0x0 }

RETE: <0x00000000> /* Maybe null pointer? */

RETN: <0x0321fc8c> /* unknown address */

RETX: <0x0009e78a> { _spi_sync + 0x2e }

RETS: <0x0032410e> { :snd_ad1836:_ad1836_spi_write + 0x7a }

PC : <0x0009e78a> { _spi_sync + 0x2e }

DCPLB_FAULT_ADDR: <0x00000098> /* Maybe null pointer? */

ICPLB_FAULT_ADDR: <0x0009e78a> { _spi_sync + 0x2e }

PROCESSOR STATE:

R0 : 0379fe60 R1 : 0321fcc4 R2 : 0321fcb8 R3 : 00000068

R4 : 03188850 R5 : 00000000 R6 : 0321fc98 R7 : 0000103f

P0 : 0379fbc0 P1 : 0379fe60 P2 : 00000000 P3 : 00452000

P4 : 00452000 P5 : 0321fcc4 FP : 0321fe3c SP : 0321fbb0

LB0: 0007ea66 LT0: 0007ea5e LC0: 00000000

LB1: 000aab8e LT1: 000aab8e LC1: 00000000

B0 : 00000000 L0 : 00000000 M0 : 00000000 I0 : 037dbc88

B1 : 00000000 L1 : 00000000 M1 : 00000000 I1 : 030fbc58

B2 : 00000000 L2 : 00000000 M2 : 00000000 I2 : ffff2a5b

B3 : 00000000 L3 : 00000000 M3 : 00000000 I3 : 00000000

A0.w: 0000006d A0.x: 00000000 A1.w: 0000006d A1.x: 00000000

USP : 0039fdc0 ASTAT: 02002000

Hardware Trace:

0 Target : <0x000047ac> { _trap_c + 0x0 }

Source : <0xffa00ad4> { _exception_to_level5 + 0xb4 }

1 Target : <0xffa00a20> { _exception_to_level5 + 0x0 }

Source : <0xffa00978> { _ex_trap_c + 0x5c }

2 Target : <0xffa0091c> { _ex_trap_c + 0x0 }

Source : <0xffa007a4> { _ex_workaround_261 + 0x1c }

3 Target : <0xffa00788> { _ex_workaround_261 + 0x0 }

Source : <0xffa00b74> { _trap + 0x28 }

4 Target : <0xffa00b4c> { _trap + 0x0 }

Source : <0xffa008be> { _bfin_return_from_exception + 0xe }

5 Target : <0xffa008b0> { _bfin_return_from_exception + 0x0 }

Source : <0xffa0079a> { _ex_workaround_261 + 0x12 }

6 Target : <0xffa00788> { _ex_workaround_261 + 0x0 }

Source : <0xffa00b74> { _trap + 0x28 }

7 Target : <0xffa00b4c> { _trap + 0x0 }

Source : <0x0009e788> { _spi_sync + 0x2c }

8 Target : <0x0009e75c> { _spi_sync + 0x0 }

Source : <0x0032410c> { :snd_ad1836:_ad1836_spi_write + 0x78 }

9 Target : <0x00324094> { :snd_ad1836:_ad1836_spi_write + 0x0 }

Source : <0x00325822> { :snd_ad1836:_bf53x_sport_config_rx_dma + 0x6b6 }

10 Target : <0x003257fc> { :snd_ad1836:_bf53x_sport_config_rx_dma + 0x690 }

Source : <0x0032584e> { :snd_ad1836:_bf53x_sport_config_rx_dma + 0x6e2 }

11 Target : <0x00325834> { :snd_ad1836:_bf53x_sport_config_rx_dma + 0x6c8 }

Source : <0x00325b8c> { :snd_ad1836:_bf53x_sport_config_rx_dma + 0xa20 }

12 Target : <0x00325b7c> { :snd_ad1836:_bf53x_sport_config_rx_dma + 0xa10 }

Source : <0x00004cd0> { _dma_free_coherent + 0x68 }

13 Target : <0x00004cb0> { _dma_free_coherent + 0x48 }

Source : <0x00004cb6> { _dma_free_coherent + 0x4e }

14 Target : <0x00004cb0> { _dma_free_coherent + 0x48 }

Source : <0x00004cb6> { _dma_free_coherent + 0x4e }

15 Target : <0x00004cb0> { _dma_free_coherent + 0x48 }

Source : <0x00004cb6> { _dma_free_coherent + 0x4e }

Stack from 0321fb90:

0321fbb4 ffa00ad8 0016a788 0016a788 0016a784 0321fc1c 00000008 00000000

0009e78a 00008030 00000027 00000000 0321fc8c 0009e78a 0009e78a 0032410e

0379fe60 02002000 000aab8e 0007ea66 000aab8e 0007ea5e 00000000 00000000

0000006d 00000000 0000006d 00000000 00000000 00000000 00000000 00000000

00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

00000000 ffff2a5b 030fbc58 037dbc88 0039fdc0 0321fe3c 0321fcc4 00452000

Call Trace:

[<0000103f>] _init_post+0x27/0xc0

[<000628dc>] _remove_proc_entry+0xc8/0x138

[<0032410e>] _ad1836_spi_write+0x7a/0x84 [snd_ad1836]

[<0000103f>] _init_post+0x27/0xc0

[<00002fff>] _do_signal+0x3db/0xd74

[<000aabac>] _snd_ctl_remove+0x64/0x90

[<0009e7ac>] _spi_complete+0x0/0x4

[<00325824>] _bf53x_sport_config_rx_dma+0x6b8/0xca8 [snd_ad1836]

[<000af286>] _snd_pcm_free+0x56/0x68

[<000a103f>] _input_ff_create+0x7b/0x144

[<00325850>] _bf53x_sport_config_rx_dma+0x6e4/0xca8 [snd_ad1836]

[<003257fc>] _bf53x_sport_config_rx_dma+0x690/0xca8 [snd_ad1836]

[<00001000>] _run_init_process+0x0/0x18

[<000abf9c>] _snd_device_free+0x58/0xa4

[<00002000>] _get_sclk+0x2c/0x58

[<000ac032>] _snd_device_free_all+0x4a/0x50

[<001157cc>] _mutex_lock+0xc/0x40

[<000a897e>] _snd_card_do_free+0x1a/0xcc

[<000a899e>] _snd_card_do_free+0x3a/0xcc

[<000a9384>] _snd_card_free+0xc/0x84

[<000a93f0>] _snd_card_free+0x78/0x84

[<00324456>] _bf53x_sport_done+0x9e/0x1a0 [snd_ad1836]

[<00007c34>] _free_dma+0x0/0xb4

[<00114844>] _klist_del+0x10/0x2c

[<00325f56>] _snd_ad1836_spi_probed+0x142/0xa34 [snd_ad1836]

[<00094b88>] ___device_release_driver+0x38/0x90

[<00094bb6>] ___device_release_driver+0x66/0x90

[<00093fea>] _device_remove_attrs+0x26/0x3c

[<00095064>] _device_release_driver+0x3c/0x7c

[<00094494>] _bus_remove_device+0x48/0x8c

[<0009449e>] _bus_remove_device+0x52/0x8c

[<000944ac>] _bus_remove_device+0x60/0x8c

[<000040d0>] _show_regs+0xf8/0x364

[<00092a6a>] _device_del+0x17a/0x2c0

[<00092a70>] _device_del+0x180/0x2c0

[<000965a2>] _platform_device_del+0x12/0x60

[<00001000>] _run_init_process+0x0/0x18

[<000968f4>] _platform_device_unregister+0xc/0x18

[<00041400>] _do_ioctl+0x48/0x4c

[<00326860>] _cleanup_module+0x18/0x30 [snd_ad1836]

[<0002695a>] _sys_delete_module+0x142/0x1e8

[<00026992>] _sys_delete_module+0x17a/0x1e8

[<00001fff>] _get_sclk+0x2b/0x58

[<00003633>] _do_signal+0xa0f/0xd74

[<00026818>] _sys_delete_module+0x0/0x1e8

[<0000fffe>] _do_exit+0x402/0x760

[<0018bbaa>] _bfin_serial_console_setup+0x76/0x124

[<00008000>] __l1_sram_alloc+0x4c/0x94

[<0018bbaa>] _bfin_serial_console_setup+0x76/0x124

Kernel panic - not syncing: Kernel exception

----

Follow-ups

--- Cliff Cai 2008-01-16 03:20:06

All hardware activities have stopped in snd_ad1836_remove ,no hardware operation

is allowed any more.

--- Vivi Li 2008-02-20 07:50:51

OK. Close it.

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