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f014a556e7
This was reported because someone was getting oopses reading /proc/iomem. It was tracked down to a zero-sized 'struct resource' entry which was located right at 4GB. You need two conditions to hit this bug: a BIOS E820_RAM area starting at exactly the boundary where you specify mem= (to get a zero-sized entry), and for the legacy_init_iomem_resources() loop to skip that resource (which only happens at exactly 4G). I think the killing zero-sized e820 entry is the easiest way to fix this. Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> |
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