From: Andy Shevchenko <andriy.shevchenko@linux.intel.com> mainline inclusion from mainline-v6.14-rc3 commit 7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IBPULH CVE: CVE-2025-21783 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... -------------------------------- The gpiochip_get_ngpios() uses chip_*() macros to print messages. However these macros rely on gpiodev to be initialised and set, which is not the case when called via bgpio_init(). In such a case the printing messages will crash on NULL pointer dereference. Replace chip_*() macros by the respective dev_*() ones to avoid such crash. Fixes: 55b2395e4e92 ("gpio: mmio: handle "ngpios" properly in bgpio_init()") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20250213155646.2882324-1-andriy.shevchenko@linux.i... Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Signed-off-by: Yifan Qiao <qiaoyifan4@huawei.com> --- drivers/gpio/gpiolib.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 5c0016c77d2a..efb592b6f6aa 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -723,13 +723,13 @@ int gpiochip_get_ngpios(struct gpio_chip *gc, struct device *dev) } if (gc->ngpio == 0) { - chip_err(gc, "tried to insert a GPIO chip with zero lines\n"); + dev_err(dev, "tried to insert a GPIO chip with zero lines\n"); return -EINVAL; } if (gc->ngpio > FASTPATH_NGPIO) - chip_warn(gc, "line cnt %u is greater than fast path cnt %u\n", - gc->ngpio, FASTPATH_NGPIO); + dev_warn(dev, "line cnt %u is greater than fast path cnt %u\n", + gc->ngpio, FASTPATH_NGPIO); return 0; } -- 2.39.2