The patch titled
Subject: backlight: check null deference of name when device is registered
has been added to the -mm tree. Its filename is
backlight-check-null-deference-of-name-when-device-is-registered.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Jingoo Han <jg1.han@xxxxxxxxxxx>
Subject: backlight: check null deference of name when device is registered
Check for a NULL name when the device is registered. If the name is null,
it will cause a kernel oops in dev_set_name().
Signed-off-by: Jingoo Han <jg1.han@xxxxxxxxxxx>
Acked-by: Devendra Naga <devendra.aaru@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/backlight/backlight.c | 5 +++++
drivers/video/backlight/lcd.c | 5 +++++
2 files changed, 10 insertions(+)
diff -puN drivers/video/backlight/backlight.c~backlight-check-null-deference-of-name-when-device-is-registered drivers/video/backlight/backlight.c
--- a/drivers/video/backlight/backlight.c~backlight-check-null-deference-of-name-when-device-is-registered
+++ a/drivers/video/backlight/backlight.c
@@ -292,6 +292,11 @@ struct backlight_device *backlight_devic
struct backlight_device *new_bd;
int rc;
+ if (name == NULL) {
+ pr_err("backlight name is null\n");
+ return ERR_PTR(-EINVAL);
+ }
+
pr_debug("backlight_device_register: name=%s\n", name);
new_bd = kzalloc(sizeof(struct backlight_device), GFP_KERNEL);
diff -puN drivers/video/backlight/lcd.c~backlight-check-null-deference-of-name-when-device-is-registered drivers/video/backlight/lcd.c
--- a/drivers/video/backlight/lcd.c~backlight-check-null-deference-of-name-when-device-is-registered
+++ a/drivers/video/backlight/lcd.c
@@ -207,6 +207,11 @@ struct lcd_device *lcd_device_register(c
struct lcd_device *new_ld;
int rc;
+ if (name == NULL) {
+ pr_err("lcd name is null\n");
+ return ERR_PTR(-EINVAL);
+ }
+
pr_debug("lcd_device_register: name=%s\n", name);
new_ld = kzalloc(sizeof(struct lcd_device), GFP_KERNEL);
_
Patches currently in -mm which might be from jg1.han@xxxxxxxxxxx are
linux-next.patch
backlight-add-lms501kf03-lcd-driver.patch
backlight-add-lms501kf03-lcd-driver-fix.patch
backlight-add-lms501kf03-lcd-driver-fix-fix.patch
backlight-ld9040-use-sleep-instead-of-delay.patch
backlight-ld9040-remove-unnecessary-null-deference-check.patch
backlight-ld9040-replace-efault-with-einval.patch
backlight-ld9040-remove-redundant-return-variables.patch
backlight-ld9040-reorder-inclusions-of-linux-xxxh.patch
backlight-s6e63m0-use-lowercase-names-of-structs.patch
backlight-s6e63m0-use-sleep-instead-of-delay.patch
backlight-s6e63m0-remove-unnecessary-null-deference-check.patch
backlight-s6e63m0-replace-efault-with-einval.patch
backlight-s6e63m0-remove-redundant-variable-before_power.patch
backlight-s6e63m0-reorder-inclusions-of-linux-xxxh.patch
backlight-ams369fg06-use-sleep-instead-of-delay.patch
backlight-ams369fg06-remove-unnecessary-null-deference-check.patch
backlight-ams369fg06-replace-efault-with-einval.patch
backlight-ams369fg06-remove-redundant-variable-before_power.patch
backlight-ams369fg06-reorder-inclusions-of-linux-xxxh.patch
backlight-l4f00242t03-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-ld9040-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-s6e63m0-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-ltv350qv-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-tdo24m-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-lms283gf05-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-ams369fg06-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-vgg2432a4-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-tosa-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-corgi_lcd-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-lms501kf03-use-spi_get_drvdata-and-spi_set_drvdata.patch
backlight-aat2870-use-bl_get_data-instead-of-dev_get_drvdata.patch
pwm_backlight-use-bl_get_data-instead-of-dev_get_drvdata.patch
backlight-ams369fg06-use-bl_get_data-instead-of-dev_get_drvdata.patch
backlight-corgi_lcd-use-bl_get_data-instead-of-dev_get_drvdata.patch
backlight-tosa-use-bl_get_data-instead-of-dev_get_drvdata.patch
backlight-omap1-use-bl_get_data-instead-of-dev_get_drvdata.patch
backlight-corgi_lcd-use-lcd_get_data-instead-of-dev_get_drvdata.patch
backlight-lm3649_backlight-remove-ret-=-eio-at-error-paths-of-probe.patch
drivers-video-backlight-l4f00242t03c-convert-to-devm_regulator_get.patch
backlight-check-null-deference-of-name-when-device-is-registered.patch
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