From: Jesper Juhl Date: Fri, 10 Aug 2007 21:50:51 +0000 (-0700) Subject: [SCSI] mpt fusion: fix two potential mem leaks X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=568761955ad01c6d238d8b12d21a554c1226a37b;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git [SCSI] mpt fusion: fix two potential mem leaks The Coverity checker spotted two potential memory leaks in drivers/message/fusion/mptbase.c::mpt_attach(). There are two returns that may leak the storage allocated for 'ioc' (sizeof(MPT_ADAPTER) bytes). A simple fix would be to simply add two kfree() calls before the return statements, but a better fix (that this patch implements) is to reorder the code so that if we hit the first return condition we don't have to do the allocation at all and then just add a kfree() call for the second case. Signed-off-by: Jesper Juhl Acked-by: "Moore, Eric Dean" Signed-off-by: Andrew Morton Signed-off-by: James Bottomley --- diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 22cb0f8b2bcd..635defd25925 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -1458,18 +1458,18 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) struct proc_dir_entry *dent, *ent; #endif + if (mpt_debug_level) + printk(KERN_INFO MYNAM ": mpt_debug_level=%xh\n", mpt_debug_level); + + if (pci_enable_device(pdev)) + return r; + ioc = kzalloc(sizeof(MPT_ADAPTER), GFP_ATOMIC); if (ioc == NULL) { printk(KERN_ERR MYNAM ": ERROR - Insufficient memory to add adapter!\n"); return -ENOMEM; } - ioc->debug_level = mpt_debug_level; - if (mpt_debug_level) - printk(KERN_INFO MYNAM ": mpt_debug_level=%xh\n", mpt_debug_level); - - if (pci_enable_device(pdev)) - return r; dinitprintk(ioc, printk(KERN_WARNING MYNAM ": mpt_adapter_install\n")); @@ -1478,6 +1478,7 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) ": 64 BIT PCI BUS DMA ADDRESSING SUPPORTED\n")); } else if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING MYNAM ": 32 BIT PCI BUS DMA ADDRESSING NOT SUPPORTED\n"); + kfree(ioc); return r; }