| Message ID | 20240111082704.2259450-1-sergio.paracuellos@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: mt7621: Fix possible string truncation in snprintf | expand |
Hi, On Thu, Jan 11, 2024 at 9:27 AM Sergio Paracuellos <sergio.paracuellos@gmail.com> wrote: > > The following warning appears when driver is compiled with W=1. > > CC drivers/pci/controller/pcie-mt7621.o > drivers/pci/controller/pcie-mt7621.c: In function ‘mt7621_pcie_probe’: > drivers/pci/controller/pcie-mt7621.c:228:49: error: ‘snprintf’ output may > be truncated before the last format character [-Werror=format-truncation=] > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > | ^ > drivers/pci/controller/pcie-mt7621.c:228:9: note: ‘snprintf’ output between > 10 and 11 bytes into a destination of size 10 > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Clean this up increasing destination buffer one byte. > > Reported-by: Bjorn Helgaas <helgaas@kernel.org> > Closes: https://lore.kernel.org/linux-pci/20240110212302.GA2123146@bhelgaas/T/#t > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> > --- > drivers/pci/controller/pcie-mt7621.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c > index 79e225edb42a..d97b956e6e57 100644 > --- a/drivers/pci/controller/pcie-mt7621.c > +++ b/drivers/pci/controller/pcie-mt7621.c > @@ -202,7 +202,7 @@ static int mt7621_pcie_parse_port(struct mt7621_pcie *pcie, > struct mt7621_pcie_port *port; > struct device *dev = pcie->dev; > struct platform_device *pdev = to_platform_device(dev); > - char name[10]; > + char name[11]; > int err; > > port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); > -- > 2.25.1 > Gentle ping on this patch :) Thanks, Sergio Paracuellos
Hi, On Fri, Feb 23, 2024 at 12:24 PM Sergio Paracuellos <sergio.paracuellos@gmail.com> wrote: > > Hi, > > On Thu, Jan 11, 2024 at 9:27 AM Sergio Paracuellos > <sergio.paracuellos@gmail.com> wrote: > > > > The following warning appears when driver is compiled with W=1. > > > > CC drivers/pci/controller/pcie-mt7621.o > > drivers/pci/controller/pcie-mt7621.c: In function ‘mt7621_pcie_probe’: > > drivers/pci/controller/pcie-mt7621.c:228:49: error: ‘snprintf’ output may > > be truncated before the last format character [-Werror=format-truncation=] > > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > > | ^ > > drivers/pci/controller/pcie-mt7621.c:228:9: note: ‘snprintf’ output between > > 10 and 11 bytes into a destination of size 10 > > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > > Clean this up increasing destination buffer one byte. > > > > Reported-by: Bjorn Helgaas <helgaas@kernel.org> > > Closes: https://lore.kernel.org/linux-pci/20240110212302.GA2123146@bhelgaas/T/#t > > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> > > --- > > drivers/pci/controller/pcie-mt7621.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c > > index 79e225edb42a..d97b956e6e57 100644 > > --- a/drivers/pci/controller/pcie-mt7621.c > > +++ b/drivers/pci/controller/pcie-mt7621.c > > @@ -202,7 +202,7 @@ static int mt7621_pcie_parse_port(struct mt7621_pcie *pcie, > > struct mt7621_pcie_port *port; > > struct device *dev = pcie->dev; > > struct platform_device *pdev = to_platform_device(dev); > > - char name[10]; > > + char name[11]; > > int err; > > > > port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); > > -- > > 2.25.1 > > > > Gentle ping on this patch :) Another gentle ping on this patch :) Thanks, Sergio Paracuellos
On Thu, Jan 11, 2024 at 09:27:04AM +0100, Sergio Paracuellos wrote: > The following warning appears when driver is compiled with W=1. > > CC drivers/pci/controller/pcie-mt7621.o > drivers/pci/controller/pcie-mt7621.c: In function ‘mt7621_pcie_probe’: > drivers/pci/controller/pcie-mt7621.c:228:49: error: ‘snprintf’ output may > be truncated before the last format character [-Werror=format-truncation=] > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > | ^ > drivers/pci/controller/pcie-mt7621.c:228:9: note: ‘snprintf’ output between > 10 and 11 bytes into a destination of size 10 > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Clean this up increasing destination buffer one byte. > > Reported-by: Bjorn Helgaas <helgaas@kernel.org> > Closes: https://lore.kernel.org/linux-pci/20240110212302.GA2123146@bhelgaas/T/#t > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Krzysztof applied this to pci/controller/mt7621 for v6.10, thanks! I just pulled that branch into "next", so it should appear in the next linux-next. > --- > drivers/pci/controller/pcie-mt7621.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c > index 79e225edb42a..d97b956e6e57 100644 > --- a/drivers/pci/controller/pcie-mt7621.c > +++ b/drivers/pci/controller/pcie-mt7621.c > @@ -202,7 +202,7 @@ static int mt7621_pcie_parse_port(struct mt7621_pcie *pcie, > struct mt7621_pcie_port *port; > struct device *dev = pcie->dev; > struct platform_device *pdev = to_platform_device(dev); > - char name[10]; > + char name[11]; > int err; > > port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); > -- > 2.25.1 >
On Fri, Apr 12, 2024 at 11:33 PM Bjorn Helgaas <helgaas@kernel.org> wrote: > > On Thu, Jan 11, 2024 at 09:27:04AM +0100, Sergio Paracuellos wrote: > > The following warning appears when driver is compiled with W=1. > > > > CC drivers/pci/controller/pcie-mt7621.o > > drivers/pci/controller/pcie-mt7621.c: In function ‘mt7621_pcie_probe’: > > drivers/pci/controller/pcie-mt7621.c:228:49: error: ‘snprintf’ output may > > be truncated before the last format character [-Werror=format-truncation=] > > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > > | ^ > > drivers/pci/controller/pcie-mt7621.c:228:9: note: ‘snprintf’ output between > > 10 and 11 bytes into a destination of size 10 > > 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); > > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > > Clean this up increasing destination buffer one byte. > > > > Reported-by: Bjorn Helgaas <helgaas@kernel.org> > > Closes: https://lore.kernel.org/linux-pci/20240110212302.GA2123146@bhelgaas/T/#t > > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> > > Krzysztof applied this to pci/controller/mt7621 for v6.10, thanks! I > just pulled that branch into "next", so it should appear in the next > linux-next. Awesome. Thanks for letting me know. Best regards, Sergio Paracuellos
diff --git a/drivers/pci/controller/pcie-mt7621.c b/drivers/pci/controller/pcie-mt7621.c index 79e225edb42a..d97b956e6e57 100644 --- a/drivers/pci/controller/pcie-mt7621.c +++ b/drivers/pci/controller/pcie-mt7621.c @@ -202,7 +202,7 @@ static int mt7621_pcie_parse_port(struct mt7621_pcie *pcie, struct mt7621_pcie_port *port; struct device *dev = pcie->dev; struct platform_device *pdev = to_platform_device(dev); - char name[10]; + char name[11]; int err; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
The following warning appears when driver is compiled with W=1. CC drivers/pci/controller/pcie-mt7621.o drivers/pci/controller/pcie-mt7621.c: In function ‘mt7621_pcie_probe’: drivers/pci/controller/pcie-mt7621.c:228:49: error: ‘snprintf’ output may be truncated before the last format character [-Werror=format-truncation=] 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); | ^ drivers/pci/controller/pcie-mt7621.c:228:9: note: ‘snprintf’ output between 10 and 11 bytes into a destination of size 10 228 | snprintf(name, sizeof(name), "pcie-phy%d", slot); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Clean this up increasing destination buffer one byte. Reported-by: Bjorn Helgaas <helgaas@kernel.org> Closes: https://lore.kernel.org/linux-pci/20240110212302.GA2123146@bhelgaas/T/#t Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> --- drivers/pci/controller/pcie-mt7621.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)