From c834b1c4ec8ccc9c2d814bd78264b509708fe6dd Mon Sep 17 00:00:00 2001 From: Tomas Henzl Date: Mon, 13 Feb 2012 18:29:58 +0100 Subject: [PATCH] [SCSI] mpt2sas: add missing allocation check The __get_free_pages can fail, so the return value should be checked. Spotted thanks to Stanislaw. Signed-off-by: Tomas Henzl Acked-by: "Nandigama, Nagalakshmi" Signed-off-by: James Bottomley --- drivers/scsi/mpt2sas/mpt2sas_base.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c index a78036f5e1a6..82fa6ce481f0 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.c +++ b/drivers/scsi/mpt2sas/mpt2sas_base.c @@ -2575,6 +2575,11 @@ _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc, int sleep_flag) ioc->chain_lookup = (struct chain_tracker *)__get_free_pages( GFP_KERNEL, ioc->chain_pages); + if (!ioc->chain_lookup) { + printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, " + "sz(%d)\n", ioc->name, (int)sz); + goto out; + } ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev, ioc->request_sz, 16, 0); if (!ioc->chain_dma_pool) { -- 2.20.1