Messages in this thread | | | Date | Wed, 16 Jan 2013 22:17:26 +0100 | From | Cong Ding <> | Subject | Re: [PATCH] sparc: kernel/sbus.c: fix memory leakage |
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On Wed, Jan 16, 2013 at 10:13:09PM +0100, Sam Ravnborg wrote: > On Mon, Jan 14, 2013 at 10:36:08PM +0100, Cong Ding wrote: > > the variable iommu and strbuf are not freed if it goes to error. > > > > Signed-off-by: Cong Ding <dinggnu@gmail.com> > > --- > > arch/sparc/kernel/sbus.c | 8 ++++++-- > > 1 file changed, 6 insertions(+), 2 deletions(-) > > > > diff --git a/arch/sparc/kernel/sbus.c b/arch/sparc/kernel/sbus.c > > index 1271b3a..0b66e53 100644 > > --- a/arch/sparc/kernel/sbus.c > > +++ b/arch/sparc/kernel/sbus.c > > @@ -555,10 +555,10 @@ static void __init sbus_iommu_init(struct platform_device *op) > > > > iommu = kzalloc(sizeof(*iommu), GFP_ATOMIC); > > if (!iommu) > > - goto fatal_memory_error; > > + goto fatal_iommu_memory_error; > > strbuf = kzalloc(sizeof(*strbuf), GFP_ATOMIC); > > if (!strbuf) > > - goto fatal_memory_error; > > + goto fatal_strbuf_memory_error; > > > > op->dev.archdata.iommu = iommu; > > op->dev.archdata.stc = strbuf; > > @@ -656,6 +656,10 @@ static void __init sbus_iommu_init(struct platform_device *op) > > return; > > > > fatal_memory_error: > > + kfree(strbuf); > > +fatal_strbuf_memory_error: > > + kfree(iommu); > > +fatal_iommu_memory_error: > > prom_printf("sbus_iommu_init: Fatal memory allocation error.\n"); > > } > kfree is a noop if passed a null pointer. > So you can just add the missing kfree's to fix this. > > Sam as far as I know, most codes in the kernel are in the same style as this patch, but if you really prefer to do in the way you described I can send a new version.
Let me know.
- cong
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