Messages in this thread | | | Date | Wed, 29 Aug 2007 19:33:48 -0600 | From | Robert Hancock <> | Subject | Re: [Bugme-new] [Bug 8957] New: Exported functions and variables should not be reachable by the outside of the module until module_init finishes |
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Andrew Morton wrote: > On Wed, 29 Aug 2007 11:33:06 -0700 (PDT) bugme-daemon@bugzilla.kernel.org 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: other_modules@kernel-bugs.osdl.org >> ReportedBy: mattilinnanvuori@yahoo.com >> >> >> 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 hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
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