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port-arm/49299: earmv7hfeb kernels can not load modules



>Number:         49299
>Category:       port-arm
>Synopsis:       earmv7hfeb kernels can not load modules
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Oct 21 18:05:00 +0000 2014
>Originator:     Martin Husemann
>Release:        NetBSD 7.99.1
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD  7.99.1 NetBSD 7.99.1 (CUBIETRUCK) #17: Tue Oct 21 19:53:07 CEST 2014  martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/evbarm/compile/CUBIETRUCK evbarm
Architecture: earmv7hfeb
Machine: evbarm
>Description:

Loading kernel modules crashes the kernel on big endian ARM kernels.

>How-To-Repeat:

Boot e.g. a CUBIETRUCK big endian kernel, then:

# modload filemon
Undefined instruction 0xdc0a0e1 in kernel at 0xca4ac1d4 (LR 0x8013f4a8 SP 0xbfce
fde8)                                                                          
Stopped in pid 18.1 (modload) at        filemon:filemon_modcmd: undeq   0dc0a0e1
                                                                               
db> bt
0xbfcefe74: netbsd:module_do_load+0xc
0xbfcefeac: netbsd:module_load+0x6c  
0xbfceff0c: netbsd:sys_modctl+0x3bc
0xbfceff7c: netbsd:syscall+0x84    
0xbfceffac: netbsd:swi_handler+0xa0


>Fix:
n/a



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