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SubjectRe: 2.6.17-rc5-mm1
FromRoland Dreier <>
DateTue, 30 May 2006 12:43:39 -0700
Building 2.6.17-rc5-mm1, I get this:

	net/built-in.o: In function `ip_rt_init':
	(.init.text+0xb04): undefined reference to `__you_cannot_kmalloc_that_much'

This seems to be coming from:

	rt_hash_locks = kmalloc(sizeof(spinlock_t) * RT_HASH_LOCK_SZ, GFP_KERNEL);

I have CONFIG_NR_CPUS=32, so RT_HASH_LOCK_SZ ends up as 2048.  Also, I
have both CONFIG_DEBUG_SPINLOCK=y and CONFIG_PROVE_SPIN_LOCKING=y so
spinlock_t is bloated up quite big:

	typedef struct {
		raw_spinlock_t raw_lock;
	#if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP)
		unsigned int break_lock;
	#endif
	#ifdef CONFIG_DEBUG_SPINLOCK
		unsigned int magic, owner_cpu;
		void *owner;
	#endif
	#ifdef CONFIG_PROVE_SPIN_LOCKING
		struct lockdep_map dep_map;
	#endif
	} spinlock_t;
I only have 8 CPUs in the box, so updating my config from the x86_64
defconfig fixes things for me.

No patch because I don't really know how to fix this properly...

 - R.
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