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ahci: Fix sglist memleak in ahci_dma_rw_buf()

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I noticed that in hw/ide/ahci:ahci_dma_rw_buf() we do not free the sglist. Thus,
I've added a call to qemu_sglist_destroy() to fix this memory leak.

In addition, I've adeed a call in qemu_sglist_destroy() to 0 all of the sglist
fields, in case there is some other codepath that tries to free the sglist.

Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Jason Baron 2012-08-03 15:57:10 -04:00 committed by Kevin Wolf
parent 61f52e06f0
commit ea8d82a1ed
2 changed files with 4 additions and 0 deletions
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1
dma-helpers.c
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@ -65,6 +65,7 @@ void qemu_sglist_add(QEMUSGList *qsg, dma_addr_t base, dma_addr_t len)
void qemu_sglist_destroy(QEMUSGList *qsg)
{
g_free(qsg->sg);
memset(qsg, 0, sizeof(*qsg));
}
typedef struct {

3
hw/ide/ahci.c
View file

@ -1073,6 +1073,9 @@ static int ahci_dma_rw_buf(IDEDMA *dma, int is_write)
dma_buf_write(p, l, &s->sg);
}
/* free sglist that was created in ahci_populate_sglist() */
qemu_sglist_destroy(&s->sg);
/* update number of transferred bytes */
ad->cur_cmd->status = cpu_to_le32(le32_to_cpu(ad->cur_cmd->status) + l);
s->io_buffer_index += l;