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This reverts commitsf3462aa(Kbuild: Handle longer symbols in kallsyms.c) andeea0e9c(kbuild: Increase kallsyms max symbol length) except for the added overflow check. The reason is a regression caused by increasing the buffer: http://marc.info/?l=linux-kernel&m=138387700415675. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Joe Mario <jmario@redhat.com> Signed-off-by: Michal Marek <mmarek@suse.cz>