The patch titled gpio: potential null dereference has been added to the -mm tree. Its filename is gpio-potential-null-dereference.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: gpio: potential null dereference From: Dan Carpenter <error27@xxxxxxxxx> Smatch found a potential null dereference in gpio_setup_irq(). The "pdesc" variable is allocated with idr_find() that can return NULL. If gpio_setup_irq() is called with 0 as gpio_flags and "pdesc" is null, it would OOPs here. Signed-off-by: Dan Carpenter <error27@xxxxxxxxx> Cc: David Brownell <david-b@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/gpio/gpiolib.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff -puN drivers/gpio/gpiolib.c~gpio-potential-null-dereference drivers/gpio/gpiolib.c --- a/drivers/gpio/gpiolib.c~gpio-potential-null-dereference +++ a/drivers/gpio/gpiolib.c @@ -416,7 +416,8 @@ static int gpio_setup_irq(struct gpio_de return 0; free_sd: - sysfs_put(pdesc->value_sd); + if (pdesc) + sysfs_put(pdesc->value_sd); free_id: idr_remove(&pdesc_idr, id); desc->flags &= GPIO_FLAGS_MASK; _ Patches currently in -mm which might be from error27@xxxxxxxxx are origin.patch linux-next.patch gpio-potential-null-dereference.patch power_meter-acpi_device_class-power_meter_resource-too-long.patch sbshc-acpi_device_class-smbus_host_controller-too-long.patch acpi_pad-processor_aggregator-name-too-long.patch acpi_pad-processor_aggregator-name-too-long-fix.patch drivers-gpu-drm-via-via_videoc-fix-off-by-one-issue.patch drivers-gpu-drm-radeon-radeon_atombiosc-range-check-issues.patch drivers-gpu-drm-drm_sysfsc-sysfs-files-error-handling.patch drivers-gpu-drm-drm_memoryc-fix-check-for-end-of-loop.patch drivers-media-video-au0828-au0828-videoc-off-by-one-bug.patch drivers-media-video-zc0301-zc0301_corec-improve-error-handling.patch drivers-media-video-et61x251-et61x251_corec-improve-error-handling.patch drivers-media-video-sn9c102-sn9c102_corec-improve-error-handling.patch cx88-improve-error-handling.patch ir-keytable-avoid-double-lock.patch cx231xx-improve-error-handling.patch backlight-backlight_device_register-return-err_ptr.patch scsi-remove-superfluous-null-pointer-check-from-scsi_kill_request.patch drivers-staging-otus-hal-hpanic-using-the-wrong-variable.patch drivers-staging-comedi-drivers-dt2801c-off-by-one-issue.patch musb-potential-use-after-free.patch usb-oxu210hp-release-spinlock-on-error-path.patch mm-document-follow_page.patch dynamic_debug-small-cleanup-in-ddebug_proc_write.patch sis-strcpy-=-strlcpy.patch proc-cleanup-remove-unused-assignments.patch fs-sysv-dereferencing-err_ptr.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html