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[SCSI] ipr: Avoid target_destroy accessing memory after it was freed 

Defined target_ids,array_ids and vsets_ids as unsigned long to avoid
target_destroy accessing memory after it was freed.

Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
wenxiong@linux.vnet.ibm.com 2013-03-14 13:52:25 -05:00 committed by James Bottomley
parent 364398324c
commit 222ab59468
2 changed files with 3 additions and 19 deletions
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16
drivers/scsi/ipr.c
View File

@ -8980,19 +8980,6 @@ static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
if (!ioa_cfg->res_entries)
goto out;
if (ioa_cfg->sis64) {
ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
if (!ioa_cfg->target_ids || !ioa_cfg->array_ids
|| !ioa_cfg->vset_ids)
goto out_free_res_entries;
}
for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
@ -9089,9 +9076,6 @@ out_free_vpd_cbs:
ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
out_free_res_entries:
kfree(ioa_cfg->res_entries);
kfree(ioa_cfg->target_ids);
kfree(ioa_cfg->array_ids);
kfree(ioa_cfg->vset_ids);
goto out;
}

6
drivers/scsi/ipr.h
View File

@ -1440,9 +1440,9 @@ struct ipr_ioa_cfg {
/*
* Bitmaps for SIS64 generated target values
*/
unsigned long *target_ids;
unsigned long *array_ids;
unsigned long *vset_ids;
unsigned long target_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)];
unsigned long array_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)];
unsigned long vset_ids[BITS_TO_LONGS(IPR_MAX_SIS64_DEVS)];
u16 type; /* CCIN of the card */