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[SCSI] libsrp: fix memory leak in srp_ring_free()

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This patch fixes a memory leak in the libsrp function srp_ring_free().
It is not documented whether or not this function should free the ring
pointer itself. But the source code of the callers of this function
(srp_target_alloc() and srp_target_free()) makes it clear that
srp_ring_free() should deallocate the ring pointer itself. Furthermore,
the patch below makes srp_ring_free() deallocate all memory allocated by
srp_ring_alloc().

This patch affects the ibmvstgt driver, which is the only in-tree driver
that calls the srp_ring_free() function (indirectly).

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Bart Van Assche 2009-08-30 12:36:48 +02:00 committed by James Bottomley
parent 661134ad37
commit afffd3dabe
1 changed files with 1 additions and 0 deletions
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drivers/scsi/libsrp.c
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@ -124,6 +124,7 @@ static void srp_ring_free(struct device *dev, struct srp_buf **ring, size_t max,
dma_free_coherent(dev, size, ring[i]->buf, ring[i]->dma);
kfree(ring[i]);
}
kfree(ring);
}
int srp_target_alloc(struct srp_target *target, struct device *dev,