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Old 02-10-2009, 10:28 AM   #1
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getting rwlock bad magic


I am working on a kernel module and my module hangs when i run it(and crashes the system). When I check the kernel logs it says "BUG: rwlock bad magic". I can't seem to be able to solve this error.

It is probably something i have missed because i ran other modules with same kind of rwlock variable and initialization and they worked fine.

I am using kernel 2.6.16.

Old 02-12-2009, 02:46 PM   #2
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Most likely you pass a wrong pointer (something you think is a spinlock, but isn't). Maybe you have already destroyed it?
Old 02-15-2009, 12:40 PM   #3
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Yes! That was it. I was trying to access a freed object. Should have been the first thing I should have thought off. The phrase 'bad magic' kinda put me off the track. Thanks a lot!


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