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cpu hotplug: slab: fix memory leak in cpu hotplug error path

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This patch fixes memory leak in error path.

In reality, we don't need to call cpuup_canceled(cpu) for now.  But upcoming
cpu hotplug error handling change needs this.

Cc: Christoph Lameter <clameter@sgi.com>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2007-10-18 03:05:11 -07:00 committed by Linus Torvalds
parent fbf1e473bd
commit 12d00f6a12
1 changed files with 8 additions and 2 deletions
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10
mm/slab.c
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@ -1282,14 +1282,19 @@ static int __cpuinit cpuup_prepare(long cpu)
shared = alloc_arraycache(node,
cachep->shared * cachep->batchcount,
0xbaadf00d);
if (!shared)
if (!shared) {
kfree(nc);
goto bad;
}
}
if (use_alien_caches) {
alien = alloc_alien_cache(node, cachep->limit);
if (!alien)
if (!alien) {
kfree(shared);
kfree(nc);
goto bad;
}
}
cachep->array[cpu] = nc;
l3 = cachep->nodelists[node];
BUG_ON(!l3);
@ -1315,6 +1320,7 @@ static int __cpuinit cpuup_prepare(long cpu)
}
return 0;
bad:
cpuup_canceled(cpu);
return -ENOMEM;
}