On 25/11/2010 16:46, Philip Nye wrote:
Further info on this:
On 25/11/2010 15:30, Philip Nye wrote:
I'm getting a slub crash when loading a module:
"BUG: failure at .../mm/slub.c:2771/kfree()!"
The test at this location is BUG_ON(!PageCompound(page));
This seems to occur when the kernel tries to dump my modules init function -
if I don't mark the function __init the crash doesn't happen.
Well it didn't before, but now I've put more code in and the module is
bigger, it is crashing at the same BUG despite the __init being off.
It is crashing on "insmod" before any attempt is made to actually run any of
the code except possibly the init function and without any debug messages
that I can catch other than the BUG itself. Could it be related to module
size? is there a limit?
This is definitely size related - as soon as the size of module.ko on disk
gets above 8191 bytes the crash happens. I have tested this by declaring a
dummy constant array within the module so by playing with the size of the
array I can change the object size without changing anything else.
Philip
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