diff options
| author | Julia Lawall <julia@diku.dk> | 2010-10-21 02:55:45 +0400 |
|---|---|---|
| committer | Kyle McMartin <kyle@mcmartin.ca> | 2010-10-22 05:03:47 +0400 |
| commit | 338e4fab3d41aa14264e10ce505a7c908633cdad (patch) | |
| tree | 66f754dfe6995eb9456c685143aa0ffc65b1735d | |
| parent | 7da1272547ebe96982a42292dfc833457708f4da (diff) | |
| download | linux-338e4fab3d41aa14264e10ce505a7c908633cdad.tar.xz | |
drivers/char/agp/parisc-agp.c: eliminate memory leak
alloc_pci_dev allocates some memory, so that memory should be freed before
leaving the function in an error case.
A simplified version of the semantic match that finds this problem is:
(http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
local idexpression x;
expression E;
identifier f1;
iterator I;
@@
x = alloc_pci_dev(...);
<... when != x
when != true (x == NULL || ...)
when != if (...) { <+...x...+> }
when != I (...) { <+...x...+> }
(
x == NULL
|
x == E
|
x->f1
)
...>
* return ...;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Dan Carpenter <error27@gmail.com>
Dave Airlie <airlied@linux.ie>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kyle McMartin <kyle@redhat.com>
| -rw-r--r-- | drivers/char/agp/parisc-agp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/agp/parisc-agp.c b/drivers/char/agp/parisc-agp.c index 1c129211302d..17e380f5f818 100644 --- a/drivers/char/agp/parisc-agp.c +++ b/drivers/char/agp/parisc-agp.c @@ -358,8 +358,12 @@ parisc_agp_setup(void __iomem *ioc_hpa, void __iomem *lba_hpa) bridge->dev = fake_bridge_dev; error = agp_add_bridge(bridge); + if (error) + goto fail; + return 0; fail: + kfree(fake_bridge_dev); return error; } |