[Bugme-new] [Bug 12446] New: Unable to insmod module. Unknwon symbol found

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Wed Jan 14 05:53:58 PST 2009


http://bugzilla.kernel.org/show_bug.cgi?id=12446

           Summary: Unable to insmod module. Unknwon symbol found
           Product: Drivers
           Version: 2.5
     KernelVersion: 2.6.28
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: blocking
          Priority: P1
         Component: Network
        AssignedTo: jgarzik at pobox.com
        ReportedBy: amit at netxen.com


Latest working kernel version:2.6.28
Earliest failing kernel version:2.6.26
Distribution:
Hardware Environment:
Software Environment:
Problem Description:
When you use driver dependent on other driver. It should load cleanely, if
other is loaded. But in kernel 2.6.26 onwards its give error, unknown symbol
found.
Actually find_symbol able to find symbol but check_version unable to match crc.
Because crc is not know to other driver. 

Steps to reproduce:
1) create two device drivers in two separate directories. let say hello and bye 
2) Export Symbol from hello module and try to use that in bye module.
3) Compile both the driver separately.
4) insmod hello.ko
3) While insmod(ing) bye.ko, gives error "Unknown Symbol found"


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