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..._DEBUG_KMS(..., crtc->state->active, ...); Thus, possible null-pointer dereferences may occur. To fix these bugs, crtc->state is checked before calling qxl_crtc_update_monitors_config(). These bugs are found by a static analysis tool STCheck written by us. Signed-off-by: Jia-Ju Bai <baijiaju1990 at gmail.com> --- drivers/gpu/drm/qxl/qxl_display.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c index 8b319ebbb0fb..fae18ef1ba59 100644 --- a/drivers/gpu/drm/qxl/qxl_display.c +++ b/drivers/gpu/drm/q...

nv40_sensor_setup() is never called in atomic context. It calls mdelay() to busily wait, which is not necessary. mdelay() can be replaced with msleep(). This is found by a static analysis tool named DCNS written by myself Signed-off-by: Jia-Ju Bai <baijiaju1990 at gmail.com> --- drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv40.c index 2c92ffb5f9d0..36c4b8865083 100644 --- a/drivers/gp...

nv50_sensor_setup() is never called in atomic context. It calls mdelay() to busily wait, which is not necessary. mdelay() can be replaced with msleep(). This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990 at gmail.com> --- drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/therm/nv50.c index 9b57b433d4cf..ce8f98f3ee48 100644 --- a/drivers/gpu/dr...

...lls kzalloc_node() with GFP_ATOMIC, > which is not necessary. > GFP_ATOMIC can be replaced with GFP_KERNEL. > > This is found by a static analysis tool named DCNS written by myself. > I also manually check the kernel code before reporting it. > > Signed-off-by: Jia-Ju Bai <baijiaju1990 at gmail.com> Patch applied. Thanks. -- Email: Herbert Xu <herbert at gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt