From: Julia Lawall <julia@xxxxxxx> pci_get_slot does a pci_dev_get, so pci_dev_put needs to be called in an error case. In the first three cases, it might also be possible to move the call to pci_get_slot downwards below the error handling code. The problem was fixed using the following semantic patch. (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ local idexpression *n; statement S1,S2; expression E,E1; expression *ptr != NULL; type T,T1; @@ ( if (!(n = pci_get_slot(...))) S1 | n = pci_get_slot(...) ) <... when != pci_dev_put(n) when != if (...) { <+... pci_dev_put(n) ...+> } when != true !n || ... when != n = (T)E when != E = n if (!n || ...) S2 ...> ( return \(0\|<+...n...+>\|ptr\); | + pci_dev_put(n); return ...; | pci_dev_put(n); | n = (T1)E1 | E1 = n ) // </smpl> Signed-off-by: Julia Lawall <julia@xxxxxxx> --- drivers/char/agp/amd64-agp.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff -u -p a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -393,6 +393,7 @@ static int __devinit uli_agp_init(struct if (i == ARRAY_SIZE(uli_sizes)) { dev_info(&pdev->dev, "no ULi size found for %d\n", size); + pci_dev_put(dev1); return -ENODEV; } @@ -400,8 +401,10 @@ static int __devinit uli_agp_init(struct pci_read_config_dword (k8_northbridges[0], AMD64_GARTAPERTUREBASE, &httfea); /* if x86-64 aperture base is beyond 4G, exit here */ - if ((httfea & 0x7fff) >> (32 - 25)) + if ((httfea & 0x7fff) >> (32 - 25)) { + pci_dev_put(dev1); return -ENODEV; + } httfea = (httfea& 0x7fff) << 25; @@ -451,6 +454,7 @@ static int nforce3_agp_init(struct pci_d if (i == ARRAY_SIZE(nforce3_sizes)) { dev_info(&pdev->dev, "no NForce3 size found for %d\n", size); + pci_dev_put(dev1); return -ENODEV; } @@ -465,6 +469,7 @@ static int nforce3_agp_init(struct pci_d /* if x86-64 aperture base is beyond 4G, exit here */ if ( (apbase & 0x7fff) >> (32 - 25) ) { dev_info(&pdev->dev, "aperture base > 4G\n"); + pci_dev_put(dev1); return -ENODEV; } -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
