FAQ: [#6844] Remove bfin_mac module will make kernel crash when binary format is FDPIC(2011)

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[#6844] Remove bfin_mac module will make kernel crash when binary format is FDPIC

Submitted By: Vivi Li

Open Date

2011-10-25 04:24:37    

Priority:

Low     Assignee:

Nobody

Status:

Open     Fixed In Release:

N/A

Found In Release:

2011R1     Release:

Category:

N/A     Board:

N/A

Processor:

BF537     Silicon Revision:

Is this bug repeatable?:

Yes     Resolution:

Assigned (Not Start)

Uboot version or rev.:

    Toolchain version or rev.:

gcc4.3-2011R1-RC2

App binary format:

FDPIC     

Summary: Remove bfin_mac module will make kernel crash when binary format is FDPIC

Details:

 

Remove bfin_mac module will make kernel crash when binary format is FDPIC.

No such problem when binary format is flat.

 

--

Linux version 3.0.0-ADI-2011R1-pre-svn10098 (test@uclinux72-kernel-elf-ad1938) (gcc version 4.3.5 (ADI-2011R1-RC2) ) #93 Sat Oct1

register early platform devices

bootconsole [early_shadow0] enabled

bootconsole [early_BFuart0] enabled

early printk enabled on early_BFuart0

Limiting kernel memory to 56MB due to anomaly 05000263

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

  fixedcode = 0x00000400-0x00000490

  text      = 0x00001000-0x00126390

  rodata    = 0x00126390-0x00186234

  bss       = 0x00187000-0x00196ae8

  data      = 0x00196ae8-0x001aa000

    stack   = 0x001a8000-0x001aa000

  init      = 0x001aa000-0x007ec000

  available = 0x007ec000-0x03800000

  DMA Zone  = 0x03f00000-0x04000000

Hardware Trace active and enabled

Boot Mode: 0

Reset caused by Software reset

Blackfin support (C) 2004-2010 Analog Devices, Inc.

Compiled for ADSP-BF537 Rev 0.2

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

Processor Speed: 500 MHz core clock and 125 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

  External memory: cacheable in instruction cache

Data Cache Enabled for CPU0

  External memory: cacheable (write-back) in data cache

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 14224

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart0,57600 console=ttyBF0,57600 ip=10.100.4.50f

PID hash table entries: 256 (order: -2, 1024 bytes)

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

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

Memory available: 48624k/65536k RAM, (6408k init code, 1172k kernel code, 528k data, 1024k dma, 7780k reserved)

NR_IRQS:146

Configuring Blackfin Priority Driven Interrupts

console [ttyBF0] enabled, bootconsole disabled

console [ttyBF0] enabled, bootconsole disabled

Calibrating delay loop... 995.32 BogoMIPS (lpj=1990656)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (16 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 48 KB (35 KB free)

NET: Registered protocol family 16

Blackfin DMA Controller

stamp_init(): registering device resources

bio: create slab <bio-0> at 0

bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs@ffc00500, dma channel@7

Switching to clocksource bfin_cs_cycles

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

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

debug-mmrs: setting up Blackfin MMR debugfs

msgmni has been set to 94

io scheduler noop registered (default)

bfin-uart: Blackfin serial driver

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

brd: module loaded

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

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

TCP cubic registered

NET: Registered protocol family 17

"dma_alloc_init: dma_page @ 0x02855000 - 256 pages at 0x03f00000TC (316762)

Freeing unused kernel memory: 6408k freed

                           _____________________________________

        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 v1.18.4 (2011-10-21 22:37:10 CST) hush - the humble shell

 

root:/> modprobe bfin_mac

ELF FDPIC interpreter with invalid DYNAMIC section (inode=178)

Unable to load interpreter

bfin_mii_bus: probed

bfin_mac: attached PHY driver [SMSC LAN83C185] (mii_bus:phy_addr=0:01, irq=-1, mdc_clk=2500000Hz(mdc_div=24)@sclk=125MHz)

bfin_mac bfin_mac.0: eth0: Blackfin on-chip Ethernet MAC driver, Version 1.1

root:/> modprobe -r bfin_mac

Illegal use of supervisor resource

<5> - Attempted to use a Supervisor register or instruction from User mode.

<5>   Supervisor resources are registers and instructions that are reserved

<5>   for Supervisor use: Supervisor only registers, all MMRs, and Supervisor

<5>   only instructions.

Kernel OOPS in progress

Deferred Exception context

CURRENT PROCESS:

COMM=modprobe PID=170  CPU=0

TEXT = 0x02900000-0x02956e28        DATA = 0x02b20e28-0x02b24b18

BSS = 0x02b24b18-0x02b00000  USER-STACK = 0x02b1fea0

 

return address: [0x000af1ee]; contents of:

0x000af1c0:  002b  0208  0200  0010  3211  6fc2  e511  0010

0x000af1d0:  0c41  1803  9108  0010  e512  002b  0c42  1803

0x000af1e0:  9110  0010  6000  0010  0000  3210  ae52 [a310]

0x000af1f0:  0010  0000  0000  0000  0000  0000  0010  0000

 

ADSP-BF537-0.2 500(MHz CCLK) 125(MHz SCLK) (mpu off)

Linux version 3.0.0-ADI-2011R1-pre-svn10098 (test@uclinux72-kernel-elf-ad1938) (gcc version 4.3.5 (ADI-2011R1-RC2) ) #93 Sat Oct1

 

SEQUENCER STATUS:               Not tainted

SEQSTAT: 0000202e  IPEND: 8008  IMASK: ffff  SYSCFG: 0006

  EXCAUSE   : 0x2e

  physical IVG3 asserted : <0xffa007ac> { _trap + 0x0 }

  physical IVG15 asserted : <0xffa01090> { _evt_system_call + 0x0 }

  logical irq   6 mapped  : <0xffa003c0> { _bfin_coretmr_interrupt + 0x0 }

  logical irq  10 mapped  : <0x000c5efc> { _bfin_rtc_interrupt + 0x0 }

  logical irq  18 mapped  : <0x000ad4ac> { _bfin_serial_dma_rx_int + 0x0 }

  logical irq  19 mapped  : <0x000ad204> { _bfin_serial_dma_tx_int + 0x0 }

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

RETN: <0x02bb7da0> /* kernel dynamic memory (maybe user-space) */

RETX: <0x00000480> /* Maybe fixed code section */

RETS: <0x00094a72> { _kobject_uevent_env + 0x28a }

PC  : <0x000af1ee> { _class_dir_child_ns_type + 0x6 }

DCPLB_FAULT_ADDR: <0xffffffe0> /* core mmrs */

ICPLB_FAULT_ADDR: <0x000af1ee> { _class_dir_child_ns_type + 0x6 }

PROCESSOR STATE:

R0 : 028545e0    R1 : ffffffc0    R2 : 00000001    R3 : 00000000

R4 : 00166fcc    R5 : 001641d8    R6 : fffffffd    R7 : 00000004

P0 : 02003d40    P1 : 028545e0    P2 : ffffffb0    P3 : 0299b244

P4 : 001a01b4    P5 : 02b28010    FP : 001a02dc    SP : 02bb7cc4

LB0: ffa0177c    LT0: ffa0177a    LC0: 00000000

LB1: 000985e8    LT1: 000985dc    LC1: 00000000

B0 : 00000000    L0 : 00000000    M0 : 00000020    I0 : 0205e560

B1 : 00000000    L1 : 00000000    M1 : 00000000    I1 : 025880b4

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

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

A0.w: 00000001   A0.x: 00000000   A1.w: 00000001   A1.x: 00000000

USP : 02b1fa38  ASTAT: 02003004

 

Hardware Trace:

   0 Target : <0x00003fb8> { _trap_c + 0x0 }

     Source : <0xffa00740> { _exception_to_level5 + 0xa4 } JUMP.L

   1 Target : <0xffa0069c> { _exception_to_level5 + 0x0 }

     Source : <0xffa00550> { _bfin_return_from_exception + 0x20 } RTX

   2 Target : <0xffa00530> { _bfin_return_from_exception + 0x0 }

     Source : <0xffa005f4> { _ex_trap_c + 0x74 } JUMP.S

   3 Target : <0xffa00580> { _ex_trap_c + 0x0 }

     Source : <0xffa00814> { _trap + 0x68 } JUMP (P4)

   4 Target : <0xffa007ca> { _trap + 0x1e }

     Source : <0xffa007c6> { _trap + 0x1a } IF CC JUMP pcrel

   5 Target : <0xffa007ac> { _trap + 0x0 }

      FAULT : <0x000af1ee> { _class_dir_child_ns_type + 0x6 } P0 = W[P2 + 12]

     Source : <0x000af1ec> { _class_dir_child_ns_type + 0x4 } R2 = W[P2 + 9](X)

   6 Target : <0x000af1e8> { _class_dir_child_ns_type + 0x0 }

     Source : <0x00093d28> { _kobj_child_ns_ops + 0x14 } JUMP (P2)

   7 Target : <0x00093d1e> { _kobj_child_ns_ops + 0xa }

     Source : <0x00093d18> { _kobj_child_ns_ops + 0x4 } IF !CC JUMP pcrel

   8 Target : <0x00093d14> { _kobj_child_ns_ops + 0x0 }

     Source : <0x00093d30> { _kobj_ns_ops + 0x4 } CALL pcrel

   9 Target : <0x00093d2c> { _kobj_ns_ops + 0x0 }

     Source : <0x00094a6e> { _kobject_uevent_env + 0x286 } CALL pcrel

  10 Target : <0x00094a6c> { _kobject_uevent_env + 0x284 }

     Source : <0x00094a66> { _kobject_uevent_env + 0x27e } IF !CC JUMP pcrel

  11 Target : <0x00094a5e> { _kobject_uevent_env + 0x276 }

     Source : <0xffa0272a> { _mutex_unlock + 0x26 } RTS

  12 Target : <0xffa02704> { _mutex_unlock + 0x0 }

     Source : <0x00094a5a> { _kobject_uevent_env + 0x272 } JUMP.L

  13 Target : <0x00094a34> { _kobject_uevent_env + 0x24c }

     Source : <0x000ec134> { _netlink_broadcast_filtered + 0x300 } RTS

  14 Target : <0x000ec12a> { _netlink_broadcast_filtered + 0x2f6 }

     Source : <0x000ec112> { _netlink_broadcast_filtered + 0x2de } IF CC JUMP pcrel

  15 Target : <0x000ec10e> { _netlink_broadcast_filtered + 0x2da }

     Source : <0x000d4690> { _consume_skb + 0x44 } RTS

Kernel Stack

Stack info:

SP: [0x02bb7cd4] <0x02bb7cd4> /* kernel dynamic memory (maybe user-space) */

FP: (0x02bb7ef4)

Memory from 0x02bb7cd0 to 02bb8000

02bb7cd0: 00000000 [02bb7da0] 00000480  000af1ee  00094a72  028545e0  02003004  000985e8

02bb7cf0: ffa0177c  000985dc  ffa0177a  00000000  00000000  00000001  00000000  00000001

02bb7d10: 00000000  00000000  00000000  00000000  00000000  00000000  00000000  00000000

02bb7d30: 00000000  00000000  00000000  00000000  00000020  00000000  00000000  025880b4

02bb7d50: 0205e560  02b1fa38  001a02dc  02b28010  001a01b4  0299b244  ffffffb0  028545e0

02bb7d70: 02003d40  00000004  fffffffd <001641d8> 00166fcc  00000000  00000001  ffffffc0

02bb7d90: 028545e0  028545e0  02003d40  00000006  0203a600  02bb7da0  00000000  00000001

02bb7db0: 000000d0  000947a4  0299b244  028544e0  02b28000  02030330  0299b23c  001a0c4c

02bb7dd0: 02b1fa44  000b00d8  02030330  0299b23c  001a0c4c  001984f4  0299b244  001984f4

02bb7df0: 00000000  00124f02  00000000  02bb7dfc  000c02de  0299b200  00198b1c  001984f4

02bb7e10: 00000080  00000020  020134b4  02bb7e34  00162320 <02aed158> 0299b200  001984f4

02bb7e30: 00000080  00000020  00000000  000b1a70 <000b1a9a> 001984f4  02aedea4  00198528

02bb7e50: ffa02a04  02b2b160  00000000  000b1b42  001984f4  02aedea4  00200200  02a41e74

02bb7e70: 020472e0  000b0fd4  02aedee0  02aedea4  02b2b160 <02aed10c><02aed10c> 024bf1d0

02bb7e90:<00034a74> 02aedee0  00000081  02bb9808  00000100  00000010  0225bbc8  6e696662

02bb7eb0: 63616d5f  00000000  00000000  00000000  00000000  00000000  00000000  00000000

02bb7ed0: 00000000  00000000  00000000  00000000  00000000  00040000  00000000  0225bbc0

02bb7ef0: ffffe000 (00000000)<ffa0094e> 000348b4  00000081  00000000  ffffe000  0024764e

02bb7f10: 02b1fa5c  0000fffe  0000dae8  00000000  00000020  028cdaf4  00008000  00002000

02bb7f30: 00000000  02bb8000  028cdaf4  028cdaf4  02907cec  ffa010f4  02001004  0285bfc5

02bb7f50: 0285c59f  0285bfc2  0285c59e  00000000  00000000  00000000  00000000  00000000

02bb7f70: 00000000  00000000  7ffff000  02b2b160  00000137  00000000  00000000  00000000

02bb7f90: 00000000  0000005b  00001802  00000001  00000001  00000001  00000001  00000000

02bb7fb0: 02b2b29c  02b1fa38  02b1fa44  02bba2ac  02b2b144  02bb9808  02bb5158  028cdae8

02bb7fd0: 00000081  00000000  00000000  00000020  00000000  0000dae8  00000000  00000080

02bb7ff0: 02b2b160  02b2b160  00000081  00000006

Return addresses in stack:

    address : <0x001641d8> /* kernel dynamic memory (maybe user-space) */

    address : <0x02aed158> { :bfin_mac:_cleanup_module + 0x64 }

    address : <0x000b1a9a> { ___device_release_driver + 0x56 }

    address : <0x02aed10c> { :bfin_mac:_cleanup_module + 0x18 }

    address : <0x02aed10c> { :bfin_mac:_cleanup_module + 0x18 }

    address : <0x00034a74> { _sys_delete_module + 0x1c0 }

   frame  1 : <0xffa0094e> { _system_call + 0x6a }

Modules linked in: bfin_mac(-)

Kernel panic - not syncing: Kernel exception

Hardware Trace:

Stack info:

SP: [0x02bb7bcc] <0x02bb7bcc> /* kernel dynamic memory (maybe user-space) */

FP: (0x02bb7c6c)

Memory from 0x02bb7bc0 to 02bb8000

02bb7bc0: 00000004  02bb7bcc  00000013 [00157bdc] 001261d8  02bb7cc4  00157bdc  0018c3cb

02bb7be0: 0018c3cb  0018c3cb  02bb7c14  001a02dc  00004474  02bb7cc4  ffe02014  0299b244

02bb7c00: 00008008  00000004  0000002e  00000013  02bb7cc4  0000003f  ffffffff  0019b248

02bb7c20: 02bb6000  00030005  001919fc  001917fc  001915fc  02bb7c34  02bb7c34  0000000a

02bb7c40:<00015cf8> 00190cd0  00000004  02bb6000  00000001  00000004  00015d04  00000001

02bb7c60: 02037620  0299b244  00000006 (00000000)<001641d8> 00166fcc  02001c80  ffa00386

02bb7c80: 001a0188  02037620  0299b244  00000006  00000000 <001641d8> 00166fcc  00000080

02bb7ca0: ffa00744  00189000  00008008  0000202e <001641d8> 00166fcc  00bb7ce0  00000000

02bb7cc0: 00000480  00000480  00008008  0000202e  00000000  02bb7da0  00000480  000af1ee

02bb7ce0: 00094a72  028545e0  02003004  000985e8  ffa0177c  000985dc  ffa0177a  00000000

02bb7d00: 00000000  00000001  00000000  00000001  00000000  00000000  00000000  00000000

02bb7d20: 00000000  00000000  00000000  00000000  00000000  00000000  00000000  00000000

02bb7d40: 00000020  00000000  00000000  025880b4  0205e560  02b1fa38  001a02dc  02b28010

02bb7d60: 001a01b4  0299b244  ffffffb0  028545e0  02003d40  00000004  fffffffd <001641d8>

02bb7d80: 00166fcc  00000000  00000001  ffffffc0  028545e0  028545e0  02003d40  00000006

02bb7da0: 0203a600  02bb7da0  00000000  00000001  000000d0  000947a4  0299b244  028544e0

02bb7dc0: 02b28000  02030330  0299b23c  001a0c4c  02b1fa44  000b00d8  02030330  0299b23c

02bb7de0: 001a0c4c  001984f4  0299b244  001984f4  00000000  00124f02  00000000  02bb7dfc

02bb7e00: 000c02de  0299b200  00198b1c  001984f4  00000080  00000020  020134b4  02bb7e34

02bb7e20: 00162320 <02aed158> 0299b200  001984f4  00000080  00000020  00000000  000b1a70

02bb7e40:<000b1a9a> 001984f4  02aedea4  00198528  ffa02a04  02b2b160  00000000  000b1b42

02bb7e60: 001984f4  02aedea4  00200200  02a41e74  020472e0  000b0fd4  02aedee0  02aedea4

02bb7e80: 02b2b160 <02aed10c><02aed10c> 024bf1d0 <00034a74> 02aedee0  00000081  02bb9808

02bb7ea0: 00000100  00000010  0225bbc8  6e696662  63616d5f  00000000  00000000  00000000

02bb7ec0: 00000000  00000000  00000000  00000000  00000000  00000000  00000000  00000000

02bb7ee0: 00000000  00040000  00000000  0225bbc0  ffffe000  00000000 <ffa0094e> 000348b4

02bb7f00: 00000081  00000000  ffffe000  0024764e  02b1fa5c  0000fffe  0000dae8  00000000

02bb7f20: 00000020  028cdaf4  00008000  00002000  00000000  02bb8000  028cdaf4  028cdaf4

02bb7f40: 02907cec  ffa010f4  02001004  0285bfc5  0285c59f  0285bfc2  0285c59e  00000000

02bb7f60: 00000000  00000000  00000000  00000000  00000000  00000000  7ffff000  02b2b160

02bb7f80: 00000137  00000000  00000000  00000000  00000000  0000005b  00001802  00000001

02bb7fa0: 00000001  00000001  00000001  00000000  02b2b29c  02b1fa38  02b1fa44  02bba2ac

02bb7fc0: 02b2b144  02bb9808  02bb5158  028cdae8  00000081  00000000  00000000  00000020

02bb7fe0: 00000000  0000dae8  00000000  00000080  02b2b160  02b2b160  00000081  00000006

Return addresses in stack:

    address : <0x00015cf8> { ___do_softirq + 0x7c }

   frame  1 : <0x001641d8> /* kernel dynamic memory (maybe user-space) */

    address : <0x001641d8> /* kernel dynamic memory (maybe user-space) */

    address : <0x001641d8> /* kernel dynamic memory (maybe user-space) */

    address : <0x001641d8> /* kernel dynamic memory (maybe user-space) */

    address : <0x02aed158> { :bfin_mac:_cleanup_module + 0x64 }

    address : <0x000b1a9a> { ___device_release_driver + 0x56 }

    address : <0x02aed10c> { :bfin_mac:_cleanup_module + 0x18 }

    address : <0x02aed10c> { :bfin_mac:_cleanup_module + 0x18 }

    address : <0x00034a74> { _sys_delete_module + 0x1c0 }

    address : <0xffa0094e> { _system_call + 0x6a }

--

 

Follow-ups

 

--- Sonic Zhang                                              2011-10-26 03:06:29

This is a bug in FDPIC modprobe. If you remove the driver by rmmod, no crash.

 

--- Sonic Zhang                                              2011-10-26 03:14:57

Ignore last comments.

I can't replicate now. The difference is I don't see following output in my

run.

 

ELF FDPIC interpreter with invalid DYNAMIC section (inode=178)

Unable to load interpreter

 

--- Sonic Zhang                                              2011-10-26 03:23:39

I can replicate sometimes by the same uImage. But, don't know the exact steps.

It is a bit ramdom.

 

 

ELF FDPIC interpreter with invalid DYNAMIC section (inode=178)

Unable to load interpreter

 

If this warning is printed when running modprobe, crash happens when removing

mac driver.

 

 

--- Sonic Zhang                                              2011-10-26 04:03:26

root:/> modprobe bfin_mac

name: /bin/modprobe

name: /bin/mdev

ELF FDPIC interpreter with invalid DYNAMIC section (inode=272)

Unable to load interpreter

name: /bin/mdev

name: /sbin/modprobe

name: /bin/mdev

bfin_mii_bus: probed

name: /bin/mdev

bfin_mac: attached PHY driver [SMSC LAN83C185] (mii_bus:phy_addr=0:01, irq=-1,

mdc_clk=2500000Hz(mdc_div=24)@sclk=125MHz)

name: /bin/mdev

bfin_mac bfin_mac.0: eth0: Blackfin on-chip Ethernet MAC driver, Version 1.1

 

--- Sonic Zhang                                              2011-10-26 04:06:11

In fs/binfmt_elf_fdpic.c, fail to load the /bin/mdev FDPIC executable file. mdev

is a link to modprobe.

 

printk("name: %s\n", bprm->filename);

        /* load the executable and interpreter into memory */

        retval = elf_fdpic_map_file(&exec_params, bprm->file,

current->mm,

                                    "executable");

 

--- Vivi Li                                                  2011-11-02 04:45:27

This bug disappear in kernel 3.1.0 but exists in kernel 3.0.0 and 2011r1 branch.

 

--- Vivi Li                                                  2012-09-05 23:34:07

I can still see this bug in latest trunk with kernel 3.5.0.

Use "modprobe" to install module, then it crashes with

"rmmod" to remove module. But it doesn't crash with "modprobe

-r" to remove module.

 

 

 

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File Name     File Type     File Size     Posted By

config.user    application/octet-stream    51368    Vivi Li

config.kernel    application/octet-stream    36508    Vivi Li

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