diff --git a/MAINTAINERS b/MAINTAINERS
index c44b111f64d8669e92101c3b487bf3b40c2d3c14..0d0862b19ce5ddc4215fdb17a7676d029802f4b1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15577,6 +15577,7 @@ F: include/uapi/linux/sed*
SECURITY CONTACT
M: Security Officers <security@kernel.org>
S: Supported
+F: Documentation/admin-guide/security-bugs.rst
SECURITY SUBSYSTEM
M: James Morris <jmorris@namei.org>
diff --git a/drivers/base/core.c b/drivers/base/core.c
index f6f620aa94086d625c64cee907ba17a55c5e9760..bb5806a2bd4ca7cc1920096104a7eb2fe8b5d8e2 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -807,9 +807,7 @@ static void device_link_put_kref(struct device_link *link)
void device_link_del(struct device_link *link)
{
device_links_write_lock();
- device_pm_lock();
device_link_put_kref(link);
- device_pm_unlock();
device_links_write_unlock();
}
EXPORT_SYMBOL_GPL(device_link_del);
@@ -830,7 +828,6 @@ void device_link_remove(void *consumer, struct device *supplier)
return;
device_links_write_lock();
- device_pm_lock();
list_for_each_entry(link, &supplier->links.consumers, s_node) {
if (link->consumer == consumer) {
@@ -839,7 +836,6 @@ void device_link_remove(void *consumer, struct device *supplier)
}
}
- device_pm_unlock();
device_links_write_unlock();
}
EXPORT_SYMBOL_GPL(device_link_remove);
@@ -4237,10 +4233,10 @@ int dev_err_probe(const struct device *dev, int err, const char *fmt, ...)
vaf.va = &args;
if (err != -EPROBE_DEFER) {
- dev_err(dev, "error %d: %pV", err, &vaf);
+ dev_err(dev, "error %pe: %pV", ERR_PTR(err), &vaf);
} else {
device_set_deferred_probe_reason(dev, &vaf);
- dev_dbg(dev, "error %d: %pV", err, &vaf);
+ dev_dbg(dev, "error %pe: %pV", ERR_PTR(err), &vaf);
}
va_end(args);
diff --git a/drivers/base/firmware_loader/firmware.h b/drivers/base/firmware_loader/firmware.h
index 933e2192fbe8a13a7ed72f9c83587a85c8d8f984..d08efc77cf16a0f3d75ddc95ee6f92558e2ad2a2 100644
--- a/drivers/base/firmware_loader/firmware.h
+++ b/drivers/base/firmware_loader/firmware.h
@@ -142,10 +142,12 @@ int assign_fw(struct firmware *fw, struct device *device, u32 opt_flags);
void fw_free_paged_buf(struct fw_priv *fw_priv);
int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed);
int fw_map_paged_buf(struct fw_priv *fw_priv);
+bool fw_is_paged_buf(struct fw_priv *fw_priv);
#else
static inline void fw_free_paged_buf(struct fw_priv *fw_priv) {}
static inline int fw_grow_paged_buf(struct fw_priv *fw_priv, int pages_needed) { return -ENXIO; }
static inline int fw_map_paged_buf(struct fw_priv *fw_priv) { return -ENXIO; }
+static inline bool fw_is_paged_buf(struct fw_priv *fw_priv) { return false; }
#endif
#endif /* __FIRMWARE_LOADER_H */
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index 9da0c9d5f538ea2ce87f1dc7d52bf05a4fce92b6..63b9714a0154855c9eacd1f3e3e5982a2a179e64 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -252,9 +252,11 @@ static void __free_fw_priv(struct kref *ref)
list_del(&fw_priv->list);
spin_unlock(&fwc->lock);
- fw_free_paged_buf(fw_priv); /* free leftover pages */
- if (!fw_priv->allocated_size)
+ if (fw_is_paged_buf(fw_priv))
+ fw_free_paged_buf(fw_priv);
+ else if (!fw_priv->allocated_size)
vfree(fw_priv->data);
+
kfree_const(fw_priv->fw_name);
kfree(fw_priv);
}
@@ -268,6 +270,11 @@ static void free_fw_priv(struct fw_priv *fw_priv)
}
#ifdef CONFIG_FW_LOADER_PAGED_BUF
+bool fw_is_paged_buf(struct fw_priv *fw_priv)
+{
+ return fw_priv->is_paged_buf;
+}
+
void fw_free_paged_buf(struct fw_priv *fw_priv)
{
int i;
@@ -275,6 +282,8 @@ void fw_free_paged_buf(struct fw_priv *fw_priv)
if (!fw_priv->pages)
return;
+ vunmap(fw_priv->data);
+
for (i = 0; i < fw_priv->nr_pages; i++)
__free_page(fw_priv->pages[i]);
kvfree(fw_priv->pages);
@@ -328,10 +337,6 @@ int fw_map_paged_buf(struct fw_priv *fw_priv)
if (!fw_priv->data)
return -ENOMEM;
- /* page table is no longer needed after mapping, let's free */
- kvfree(fw_priv->pages);
- fw_priv->pages = NULL;
-
return 0;
}
#endif
diff --git a/drivers/firmware/efi/embedded-firmware.c b/drivers/firmware/efi/embedded-firmware.c
index e97a9c9d010c82d67951f81b78807c661ec54594..21ae0c48232a118bac79cc4a7783eb30700b4478 100644
--- a/drivers/firmware/efi/embedded-firmware.c
+++ b/drivers/firmware/efi/embedded-firmware.c
@@ -16,9 +16,9 @@
/* Exported for use by lib/test_firmware.c only */
LIST_HEAD(efi_embedded_fw_list);
-EXPORT_SYMBOL_GPL(efi_embedded_fw_list);
-
-static bool checked_for_fw;
+EXPORT_SYMBOL_NS_GPL(efi_embedded_fw_list, TEST_FIRMWARE);
+bool efi_embedded_fw_checked;
+EXPORT_SYMBOL_NS_GPL(efi_embedded_fw_checked, TEST_FIRMWARE);
static const struct dmi_system_id * const embedded_fw_table[] = {
#ifdef CONFIG_TOUCHSCREEN_DMI
@@ -116,14 +116,14 @@ void __init efi_check_for_embedded_firmwares(void)
}
}
- checked_for_fw = true;
+ efi_embedded_fw_checked = true;
}
int efi_get_embedded_fw(const char *name, const u8 **data, size_t *size)
{
struct efi_embedded_fw *iter, *fw = NULL;
- if (!checked_for_fw) {
+ if (!efi_embedded_fw_checked) {
pr_warn("Warning %s called while we did not check for embedded fw\n",
__func__);
return -ENOENT;
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index b167d2d0214849a98fd6fe457eb9583fa33bf23c..a768a09430c3a9c0cad71e2f47a8544acafdf9c0 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -177,7 +177,7 @@ static int open_proxy_open(struct inode *inode, struct file *filp)
goto out;
if (!fops_get(real_fops)) {
-#ifdef MODULE
+#ifdef CONFIG_MODULES
if (real_fops->owner &&
real_fops->owner->state == MODULE_STATE_GOING)
goto out;
@@ -312,7 +312,7 @@ static int full_proxy_open(struct inode *inode, struct file *filp)
goto out;
if (!fops_get(real_fops)) {
-#ifdef MODULE
+#ifdef CONFIG_MODULES
if (real_fops->owner &&
real_fops->owner->state == MODULE_STATE_GOING)
goto out;
diff --git a/include/linux/efi_embedded_fw.h b/include/linux/efi_embedded_fw.h
index 57eac5241303af5a66c3f39746f09dbbf3b477c7..a97a12bb2c9ef114722423d5722959a9669c5985 100644
--- a/include/linux/efi_embedded_fw.h
+++ b/include/linux/efi_embedded_fw.h
@@ -8,8 +8,8 @@
#define EFI_EMBEDDED_FW_PREFIX_LEN 8
/*
- * This struct and efi_embedded_fw_list are private to the efi-embedded fw
- * implementation they are in this header for use by lib/test_firmware.c only!
+ * This struct is private to the efi-embedded fw implementation.
+ * They are in this header for use by lib/test_firmware.c only!
*/
struct efi_embedded_fw {
struct list_head list;
@@ -18,8 +18,6 @@ struct efi_embedded_fw {
size_t length;
};
-extern struct list_head efi_embedded_fw_list;
-
/**
* struct efi_embedded_fw_desc - This struct is used by the EFI embedded-fw
* code to search for embedded firmwares.
diff --git a/lib/kobject.c b/lib/kobject.c
index 3afb939f2a1cc5a5a04a4c2da71f1f35315b5c0a..ea53b30cf4837969326dac3282e1fd364edbd3a9 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -604,9 +604,6 @@ static void __kobject_del(struct kobject *kobj)
struct kernfs_node *sd;
const struct kobj_type *ktype;
- if (!kobj)
- return;
-
sd = kobj->sd;
ktype = get_ktype(kobj);
@@ -637,8 +634,12 @@ static void __kobject_del(struct kobject *kobj)
*/
void kobject_del(struct kobject *kobj)
{
- struct kobject *parent = kobj->parent;
+ struct kobject *parent;
+
+ if (!kobj)
+ return;
+ parent = kobj->parent;
__kobject_del(kobj);
kobject_put(parent);
}
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index 9fee2b93a8d18c0d2a343ec4e3d3fd173b3c62d2..06c95505775644d44af3dde867d72131128ee07e 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -26,6 +26,8 @@
#include <linux/vmalloc.h>
#include <linux/efi_embedded_fw.h>
+MODULE_IMPORT_NS(TEST_FIRMWARE);
+
#define TEST_FIRMWARE_NAME "test-firmware.bin"
#define TEST_FIRMWARE_NUM_REQS 4
#define TEST_FIRMWARE_BUF_SIZE SZ_1K
@@ -489,6 +491,9 @@ out:
static DEVICE_ATTR_WO(trigger_request);
#ifdef CONFIG_EFI_EMBEDDED_FIRMWARE
+extern struct list_head efi_embedded_fw_list;
+extern bool efi_embedded_fw_checked;
+
static ssize_t trigger_request_platform_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -501,6 +506,7 @@ static ssize_t trigger_request_platform_store(struct device *dev,
};
struct efi_embedded_fw efi_embedded_fw;
const struct firmware *firmware = NULL;
+ bool saved_efi_embedded_fw_checked;
char *name;
int rc;
@@ -513,6 +519,8 @@ static ssize_t trigger_request_platform_store(struct device *dev,
efi_embedded_fw.data = (void *)test_data;
efi_embedded_fw.length = sizeof(test_data);
list_add(&efi_embedded_fw.list, &efi_embedded_fw_list);
+ saved_efi_embedded_fw_checked = efi_embedded_fw_checked;
+ efi_embedded_fw_checked = true;
pr_info("loading '%s'\n", name);
rc = firmware_request_platform(&firmware, name, dev);
@@ -530,6 +538,7 @@ static ssize_t trigger_request_platform_store(struct device *dev,
rc = count;
out:
+ efi_embedded_fw_checked = saved_efi_embedded_fw_checked;
release_firmware(firmware);
list_del(&efi_embedded_fw.list);
kfree(name);