[#5263] kernel BUG()'s when loading modules and CONFIG_MODVERSIONS=y

Submitted By: Mike Frysinger

Open Date

2009-06-16 13:37:25 Close Date

2009-06-19 03:51:59

Priority:

Medium Assignee:

Nobody

Status:

Closed Fixed In Release:

N/A

Found In Release:

2010R1 Release:

svn 6753

Category:

N/A Board:

EZKIT Lite

Processor:

BF548 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

trunk

App binary format:

N/A

Summary: kernel BUG()'s when loading modules and CONFIG_MODVERSIONS=y

Details:

i'm pretty sure i reported this before, but i cant seem to find it. at any rate, enabling CONFIG_MODVERSIONS in trunk (Module versioning support) and loading any module results in instant BUG().

my kernel config is the BF548-EZKIT defconfig and modversions turned on

root:/> insmod /msdos.ko

------------[ cut here ]------------

kernel BUG at kernel/module.c:1057!

Kernel panic - not syncing: BUG()

Hardware Trace:

0 Target : <0x00004ee0> { _trap_c + 0x0 }

Source : <0xffa005ea> { _exception_to_level5 + 0x9e } CALL pcrel

1 Target : <0xffa0054c> { _exception_to_level5 + 0x0 }

Source : <0xffa0042c> { _bfin_return_from_exception + 0x18 } RTX

2 Target : <0xffa00414> { _bfin_return_from_exception + 0x0 }

Source : <0xffa004a2> { _ex_trap_c + 0x46 } JUMP.S

3 Target : <0xffa0045c> { _ex_trap_c + 0x0 }

Source : <0xffa006b4> { _trap + 0x58 } JUMP (P4)

4 Target : <0xffa0065c> { _trap + 0x0 }

Source : <0x00028f3c> { _load_module + 0x2c4 } IF !CC JUMP

5 Target : <0x00028f3a> { _load_module + 0x2c2 }

Source : <0x0002797e> { _find_symbol + 0x4e } RTS

6 Target : <0x00027978> { _find_symbol + 0x48 }

Source : <0x00027960> { _find_symbol + 0x30 } IF !CC JUMP

7 Target : <0x0002795c> { _find_symbol + 0x2c }

Source : <0x0002791e> { _each_symbol + 0xe2 } RTS

8 Target : <0x0002790a> { _each_symbol + 0xce }

Source : <0x00027876> { _each_symbol + 0x3a } JUMP.S

9 Target : <0x0002785e> { _each_symbol + 0x22 }

Source : <0x00027246> { _each_symbol_in_section + 0x56 } RTS

10 Target : <0x00027240> { _each_symbol_in_section + 0x50 }

Source : <0x00027254> { _each_symbol_in_section + 0x64 } JUMP.S

11 Target : <0x00027248> { _each_symbol_in_section + 0x58 }

Source : <0x0002721a> { _each_symbol_in_section + 0x2a } IF !CC JUMP

12 Target : <0x0002720e> { _each_symbol_in_section + 0x1e }

Source : <0x00027250> { _each_symbol_in_section + 0x60 } IF CC JUMP

13 Target : <0x00027248> { _each_symbol_in_section + 0x58 }

Source : <0x0002722c> { _each_symbol_in_section + 0x3c } IF !CC JUMP

14 Target : <0x00027220> { _each_symbol_in_section + 0x30 }

Source : <0x0002723c> { _each_symbol_in_section + 0x4c } IF CC JUMP

15 Target : <0x00027238> { _each_symbol_in_section + 0x48 }

Source : <0x00027be0> { _find_symbol_in_section + 0x70 } RTS

Stack info:

SP: [0x00373c98] <0x00373c98> /* kernel dynamic memory */

FP: (0x00373eb8)

Memory from 0x00373c90 to 00374000

00373c90: 00373c98 00000013 [001f6b04]<001b2b2a> 00373d7c 001f6b04 002526be 002526be

00373cb0: 002526be 00373cd0 <000052aa> 00373d7c ffe02014 00940000 00000000 00264e78

00373cd0: 0000ffff 0000003f 00000000 00000000 00257ed0 00257cd0 00257ad0 00373cec

00373cf0: 00373cec 00265700 <0002d364> 00256fdc 00000001 00000020 00000081 00000004

00373d10: 00000100 <00013332> 00000001 <0002c63c> 00268da4 00000080 00940000 00000006

00373d30: 00373ec0 <ffa002f8> 00270a1c 00000080 00940000 00000006 00000000 00fe129c

00373d50: 00fe129c 000000d0 <ffa005ee> ffa00b90 00000000 0000ffff 0095220c 00fe129c

00373d70:<00027238> 001b4ee8 00027b70 00000480 00008030 00060021 00000000 00373e58

00373d90: 00000480 00028fda <00028f3a> 00000000 02003025 0003c008 000af1b6 0003c002

00373db0: 000af1ae 00000000 00000000 00000000 00000000 00000000 00000000 00000000

00373dd0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

00373df0: 00000000 00000000 00000000 00000000 00000000 00940000 04000021 00febe84

00373e10: 0095243c 00941b50 0095239c 00940000 00202599 00268ae4 00373eb8 00000000

00373e30: 0000000a 0095220c 00fe129c 00000024 0000043e 00238a9c 00000000 00000000

00373e50: 00373eb8 00000006 00373e58 00373e58 0001ccd6 00000001 00000000 00000000

00373e70: 00373eb8 00dcb964 00952784 009520c3 00372000 0095c8c4 00000023 0000000b

00373e90: 0000000a 009527ac 0095220c 00952234 00000000 008ee714 038dea20 00000003

00373eb0: 00373ef0 00000000 (00000000)<0003cd88> 00febe90 <00029d64> 00029d24 00000080

00373ed0: 0000002c 00f40004 0001ccd6 00fe129c <00f9e136><0003ce1a> 00000000 038dea20

00373ef0: ffffe000 00000000 <ffa007ec> 00029d24 00000000 ffffe000 000000f0 0086bd64

00373f10:<ffa0081e> 00372000 0001ccd6 <00f9e136> 000000f0 00f8345c 00008000 00000000

00373f30: 00000000 00374000 00f8345c 00f8345c <00f9e90c><ffa00ee8> 02003004 00814963

00373f50: 00f8ec3d 0081495a 00f8ec3c 00000000 00000000 00000000 00000000 00000000

00373f70: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

00373f90: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

00373fb0: 04000021 00febe84 00febe90 00fe2734 00febf80 0000002c <00f5ccda> 00f5dff4

00373fd0: 00000080 00fe129c 00f40004 000000f0 <00f9e136> 0001ccd6 00fe129c 0001ccd6

00373ff0: 00f40004 00f40004 00000080 00000006 e0007270

Return addresses in stack:

address : <0x001b2b2a> { _panic + 0x4a }

address : <0x000052aa> { _trap_c + 0x3ca }

address : <0x0002d364> { _rcu_process_callbacks + 0x2c }

address : <0x00013332> { ___do_softirq + 0x5a }

address : <0x0002c63c> { _handle_simple_irq + 0x6c }

address : <0xffa002f8> { _asm_do_IRQ + 0x58 }

address : <0xffa005ee> { _exception_to_level5 + 0xa2 }

address : <0x00027238> { _each_symbol_in_section + 0x48 }

address : <0x00028f3a> { _load_module + 0x2c2 }

frame 1 : <0x0003cd88> { _filp_close + 0x38 }

address : <0x00029d64> { _sys_init_module + 0x40 }

address : <0x00f9e136> [ insmod + 0x1e0f6 ]

address : <0x0003ce1a> { _sys_close + 0x72 }

address : <0xffa007ec> { _system_call + 0x68 }

address : <0xffa0081e> { _system_call + 0x9a }

address : <0x00f9e136> [ insmod + 0x1e0f6 ]

address : <0x00f9e90c> [ insmod + 0x1e8cc ]

address : <0xffa00ee8> { _evt_system_call + 0x64 }

address : <0x00f5ccda> [ insmod + 0x1ccda ]

address : <0x00f9e136> [ insmod + 0x1e0f6 ]

Follow-ups

--- Mike Frysinger 2009-06-16 14:21:28

i did report similar issue for [#3633], but the change there was reverted and no

generalized fix was found

--- Mike Frysinger 2009-06-19 03:51:59

proper fix from lkml is to use MODULE_SYMBOL_PREFIX

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