Andrew Morton wrote:
On Wed, 29 Aug 2007 11:33:06 -0700 (PDT) [email protected] wrote:
http://bugzilla.kernel.org/show_bug.cgi?id=8957
Summary: Exported functions and variables should not be reachable
by the outside of the module until module_init finishes
Product: Other
Version: 2.5
KernelVersion: 2.6.23-rc4
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Modules
AssignedTo: [email protected]
ReportedBy: [email protected]
Problem Description: a module's exported functions can be called before before
they are properly initialized by the module_init function.
Steps to reproduce: write a module that exports functions that require
initialization by the module_init function to work correctly.
E.g. spin lock variables are no longer allowed to be initialized by C
initializers of the module but only by spin_lock_init that can be called by the
module_init function. If an exported function calls spin_lock before it is
initialized, it deadlocks.
ooh, nice bug ;)
Under what circumstances is this actually happening? What are these
functions that are being called?
Normally things are set up such that this isn't a problem, i.e. if
module A depends on module B, module A can't load until module B is
finished loading.
--
Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from [email protected]
Home Page: http://www.roberthancock.com/
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