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linux_get_parent_info: Check for NULL priv->sysfs_dir before strcmp #129

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linux_get_parent_info: Check for NULL priv->sysfs_dir before strcmp #129

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8 changes: 5 additions & 3 deletions libusb/os/linux_usbfs.c
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Expand Up @@ -1034,9 +1034,11 @@ static int linux_get_parent_info(struct libusb_device *dev, const char *sysfs_di
usbi_mutex_lock(&ctx->usb_devs_lock);
list_for_each_entry(it, &ctx->usb_devs, list, struct libusb_device) {
struct linux_device_priv *priv = _device_priv(it);
if (0 == strcmp (priv->sysfs_dir, parent_sysfs_dir)) {
dev->parent_dev = libusb_ref_device(it);
break;
if (priv->sysfs_dir) {
if (0 == strcmp (priv->sysfs_dir, parent_sysfs_dir)) {
dev->parent_dev = libusb_ref_device(it);
break;
}
}
}
usbi_mutex_unlock(&ctx->usb_devs_lock);
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