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Message-ID: <20160316201100.GB4564@kroah.com>
Date: Wed, 16 Mar 2016 13:11:00 -0700
From: Greg KH <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
torvalds@...ux-foundation.org, stable@...r.kernel.org
Cc: lwn@....net, Jiri Slaby <jslaby@...e.cz>
Subject: Re: Linux 3.14.65
diff --git a/Documentation/filesystems/efivarfs.txt b/Documentation/filesystems/efivarfs.txt
index c477af086e65..686a64bba775 100644
--- a/Documentation/filesystems/efivarfs.txt
+++ b/Documentation/filesystems/efivarfs.txt
@@ -14,3 +14,10 @@ filesystem.
efivarfs is typically mounted like this,
mount -t efivarfs none /sys/firmware/efi/efivars
+
+Due to the presence of numerous firmware bugs where removing non-standard
+UEFI variables causes the system firmware to fail to POST, efivarfs
+files that are not well-known standardized variables are created
+as immutable files. This doesn't prevent removal - "chattr -i" will work -
+but it does prevent this kind of failure from being accomplished
+accidentally.
diff --git a/Makefile b/Makefile
index de41fa82652f..a19c22a77728 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 14
-SUBLEVEL = 64
+SUBLEVEL = 65
EXTRAVERSION =
NAME = Remembering Coco
diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
index 12664c130d73..78a859ec4946 100644
--- a/arch/powerpc/kernel/module_64.c
+++ b/arch/powerpc/kernel/module_64.c
@@ -202,7 +202,7 @@ static void dedotify(Elf64_Sym *syms, unsigned int numsyms, char *strtab)
if (syms[i].st_shndx == SHN_UNDEF) {
char *name = strtab + syms[i].st_name;
if (name[0] == '.')
- memmove(name, name+1, strlen(name));
+ syms[i].st_name++;
}
}
}
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index b3bad672e5d9..87fa70f8472a 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -1148,6 +1148,20 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
std r6, VCPU_ACOP(r9)
stw r7, VCPU_GUEST_PID(r9)
std r8, VCPU_WORT(r9)
+ /*
+ * Restore various registers to 0, where non-zero values
+ * set by the guest could disrupt the host.
+ */
+ li r0, 0
+ mtspr SPRN_IAMR, r0
+ mtspr SPRN_CIABR, r0
+ mtspr SPRN_DAWRX, r0
+ mtspr SPRN_TCSCR, r0
+ mtspr SPRN_WORT, r0
+ /* Set MMCRS to 1<<31 to freeze and disable the SPMC counters */
+ li r0, 1
+ sldi r0, r0, 31
+ mtspr SPRN_MMCRS, r0
8:
/* Save and reset AMR and UAMOR before turning on the MMU */
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 80c22a3ca688..b6fc5fc64cef 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1555,6 +1555,13 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
return;
}
break;
+ case MSR_IA32_PEBS_ENABLE:
+ /* PEBS needs a quiescent period after being disabled (to write
+ * a record). Disabling PEBS through VMX MSR swapping doesn't
+ * provide that period, so a CPU could write host's record into
+ * guest's memory.
+ */
+ wrmsrl(MSR_IA32_PEBS_ENABLE, 0);
}
for (i = 0; i < m->nr; ++i)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1777f89875fb..8db66424be97 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1991,6 +1991,8 @@ static void accumulate_steal_time(struct kvm_vcpu *vcpu)
static void record_steal_time(struct kvm_vcpu *vcpu)
{
+ accumulate_steal_time(vcpu);
+
if (!(vcpu->arch.st.msr_val & KVM_MSR_ENABLED))
return;
@@ -2123,12 +2125,6 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
if (!(data & KVM_MSR_ENABLED))
break;
- vcpu->arch.st.last_steal = current->sched_info.run_delay;
-
- preempt_disable();
- accumulate_steal_time(vcpu);
- preempt_enable();
-
kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu);
break;
@@ -2818,7 +2814,6 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
vcpu->cpu = cpu;
}
- accumulate_steal_time(vcpu);
kvm_make_request(KVM_REQ_STEAL_UPDATE, vcpu);
}
diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 1971f3ccb09a..eeb2fb239934 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -125,23 +125,6 @@ int af_alg_release(struct socket *sock)
}
EXPORT_SYMBOL_GPL(af_alg_release);
-void af_alg_release_parent(struct sock *sk)
-{
- struct alg_sock *ask = alg_sk(sk);
- bool last;
-
- sk = ask->parent;
- ask = alg_sk(sk);
-
- lock_sock(sk);
- last = !--ask->refcnt;
- release_sock(sk);
-
- if (last)
- sock_put(sk);
-}
-EXPORT_SYMBOL_GPL(af_alg_release_parent);
-
static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
struct sock *sk = sock->sk;
@@ -149,7 +132,6 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
struct sockaddr_alg *sa = (void *)uaddr;
const struct af_alg_type *type;
void *private;
- int err;
if (sock->state == SS_CONNECTED)
return -EINVAL;
@@ -175,22 +157,16 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
return PTR_ERR(private);
}
- err = -EBUSY;
lock_sock(sk);
- if (ask->refcnt)
- goto unlock;
swap(ask->type, type);
swap(ask->private, private);
- err = 0;
-
-unlock:
release_sock(sk);
alg_do_release(type, private);
- return err;
+ return 0;
}
static int alg_setkey(struct sock *sk, char __user *ukey,
@@ -223,15 +199,11 @@ static int alg_setsockopt(struct socket *sock, int level, int optname,
struct sock *sk = sock->sk;
struct alg_sock *ask = alg_sk(sk);
const struct af_alg_type *type;
- int err = -EBUSY;
+ int err = -ENOPROTOOPT;
lock_sock(sk);
- if (ask->refcnt)
- goto unlock;
-
type = ask->type;
- err = -ENOPROTOOPT;
if (level != SOL_ALG || !type)
goto unlock;
@@ -280,8 +252,7 @@ int af_alg_accept(struct sock *sk, struct socket *newsock)
sk2->sk_family = PF_ALG;
- if (!ask->refcnt++)
- sock_hold(sk);
+ sock_hold(sk);
alg_sk(sk2)->parent = sk;
alg_sk(sk2)->type = type;
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
index 3dc248239197..f04ce007bf7f 100644
--- a/drivers/firmware/efi/efivars.c
+++ b/drivers/firmware/efi/efivars.c
@@ -219,7 +219,8 @@ efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count)
}
if ((new_var->Attributes & ~EFI_VARIABLE_MASK) != 0 ||
- efivar_validate(new_var, new_var->Data, new_var->DataSize) == false) {
+ efivar_validate(new_var->VendorGuid, new_var->VariableName,
+ new_var->Data, new_var->DataSize) == false) {
printk(KERN_ERR "efivars: Malformed variable content\n");
return -EINVAL;
}
@@ -334,7 +335,8 @@ static ssize_t efivar_create(struct file *filp, struct kobject *kobj,
return -EACCES;
if ((new_var->Attributes & ~EFI_VARIABLE_MASK) != 0 ||
- efivar_validate(new_var, new_var->Data, new_var->DataSize) == false) {
+ efivar_validate(new_var->VendorGuid, new_var->VariableName,
+ new_var->Data, new_var->DataSize) == false) {
printk(KERN_ERR "efivars: Malformed variable content\n");
return -EINVAL;
}
@@ -409,35 +411,27 @@ efivar_create_sysfs_entry(struct efivar_entry *new_var)
{
int i, short_name_size;
char *short_name;
- unsigned long variable_name_size;
- efi_char16_t *variable_name;
-
- variable_name = new_var->var.VariableName;
- variable_name_size = ucs2_strlen(variable_name) * sizeof(efi_char16_t);
+ unsigned long utf8_name_size;
+ efi_char16_t *variable_name = new_var->var.VariableName;
/*
- * Length of the variable bytes in ASCII, plus the '-' separator,
+ * Length of the variable bytes in UTF8, plus the '-' separator,
* plus the GUID, plus trailing NUL
*/
- short_name_size = variable_name_size / sizeof(efi_char16_t)
- + 1 + EFI_VARIABLE_GUID_LEN + 1;
-
- short_name = kzalloc(short_name_size, GFP_KERNEL);
+ utf8_name_size = ucs2_utf8size(variable_name);
+ short_name_size = utf8_name_size + 1 + EFI_VARIABLE_GUID_LEN + 1;
+ short_name = kmalloc(short_name_size, GFP_KERNEL);
if (!short_name)
return 1;
- /* Convert Unicode to normal chars (assume top bits are 0),
- ala UTF-8 */
- for (i=0; i < (int)(variable_name_size / sizeof(efi_char16_t)); i++) {
- short_name[i] = variable_name[i] & 0xFF;
- }
+ ucs2_as_utf8(short_name, variable_name, short_name_size);
+
/* This is ugly, but necessary to separate one vendor's
private variables from another's. */
-
- *(short_name + strlen(short_name)) = '-';
+ short_name[utf8_name_size] = '-';
efi_guid_unparse(&new_var->var.VendorGuid,
- short_name + strlen(short_name));
+ short_name + utf8_name_size + 1);
new_var->kobj.kset = efivars_kset;
diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
index e6125522860a..4e2f46938bf0 100644
--- a/drivers/firmware/efi/vars.c
+++ b/drivers/firmware/efi/vars.c
@@ -42,7 +42,7 @@ DECLARE_WORK(efivar_work, NULL);
EXPORT_SYMBOL_GPL(efivar_work);
static bool
-validate_device_path(struct efi_variable *var, int match, u8 *buffer,
+validate_device_path(efi_char16_t *var_name, int match, u8 *buffer,
unsigned long len)
{
struct efi_generic_dev_path *node;
@@ -75,7 +75,7 @@ validate_device_path(struct efi_variable *var, int match, u8 *buffer,
}
static bool
-validate_boot_order(struct efi_variable *var, int match, u8 *buffer,
+validate_boot_order(efi_char16_t *var_name, int match, u8 *buffer,
unsigned long len)
{
/* An array of 16-bit integers */
@@ -86,18 +86,18 @@ validate_boot_order(struct efi_variable *var, int match, u8 *buffer,
}
static bool
-validate_load_option(struct efi_variable *var, int match, u8 *buffer,
+validate_load_option(efi_char16_t *var_name, int match, u8 *buffer,
unsigned long len)
{
u16 filepathlength;
int i, desclength = 0, namelen;
- namelen = ucs2_strnlen(var->VariableName, sizeof(var->VariableName));
+ namelen = ucs2_strnlen(var_name, EFI_VAR_NAME_LEN);
/* Either "Boot" or "Driver" followed by four digits of hex */
for (i = match; i < match+4; i++) {
- if (var->VariableName[i] > 127 ||
- hex_to_bin(var->VariableName[i] & 0xff) < 0)
+ if (var_name[i] > 127 ||
+ hex_to_bin(var_name[i] & 0xff) < 0)
return true;
}
@@ -132,12 +132,12 @@ validate_load_option(struct efi_variable *var, int match, u8 *buffer,
/*
* And, finally, check the filepath
*/
- return validate_device_path(var, match, buffer + desclength + 6,
+ return validate_device_path(var_name, match, buffer + desclength + 6,
filepathlength);
}
static bool
-validate_uint16(struct efi_variable *var, int match, u8 *buffer,
+validate_uint16(efi_char16_t *var_name, int match, u8 *buffer,
unsigned long len)
{
/* A single 16-bit integer */
@@ -148,7 +148,7 @@ validate_uint16(struct efi_variable *var, int match, u8 *buffer,
}
static bool
-validate_ascii_string(struct efi_variable *var, int match, u8 *buffer,
+validate_ascii_string(efi_char16_t *var_name, int match, u8 *buffer,
unsigned long len)
{
int i;
@@ -165,67 +165,133 @@ validate_ascii_string(struct efi_variable *var, int match, u8 *buffer,
}
struct variable_validate {
+ efi_guid_t vendor;
char *name;
- bool (*validate)(struct efi_variable *var, int match, u8 *data,
+ bool (*validate)(efi_char16_t *var_name, int match, u8 *data,
unsigned long len);
};
+/*
+ * This is the list of variables we need to validate, as well as the
+ * whitelist for what we think is safe not to default to immutable.
+ *
+ * If it has a validate() method that's not NULL, it'll go into the
+ * validation routine. If not, it is assumed valid, but still used for
+ * whitelisting.
+ *
+ * Note that it's sorted by {vendor,name}, but globbed names must come after
+ * any other name with the same prefix.
+ */
static const struct variable_validate variable_validate[] = {
- { "BootNext", validate_uint16 },
- { "BootOrder", validate_boot_order },
- { "DriverOrder", validate_boot_order },
- { "Boot*", validate_load_option },
- { "Driver*", validate_load_option },
- { "ConIn", validate_device_path },
- { "ConInDev", validate_device_path },
- { "ConOut", validate_device_path },
- { "ConOutDev", validate_device_path },
- { "ErrOut", validate_device_path },
- { "ErrOutDev", validate_device_path },
- { "Timeout", validate_uint16 },
- { "Lang", validate_ascii_string },
- { "PlatformLang", validate_ascii_string },
- { "", NULL },
+ { EFI_GLOBAL_VARIABLE_GUID, "BootNext", validate_uint16 },
+ { EFI_GLOBAL_VARIABLE_GUID, "BootOrder", validate_boot_order },
+ { EFI_GLOBAL_VARIABLE_GUID, "Boot*", validate_load_option },
+ { EFI_GLOBAL_VARIABLE_GUID, "DriverOrder", validate_boot_order },
+ { EFI_GLOBAL_VARIABLE_GUID, "Driver*", validate_load_option },
+ { EFI_GLOBAL_VARIABLE_GUID, "ConIn", validate_device_path },
+ { EFI_GLOBAL_VARIABLE_GUID, "ConInDev", validate_device_path },
+ { EFI_GLOBAL_VARIABLE_GUID, "ConOut", validate_device_path },
+ { EFI_GLOBAL_VARIABLE_GUID, "ConOutDev", validate_device_path },
+ { EFI_GLOBAL_VARIABLE_GUID, "ErrOut", validate_device_path },
+ { EFI_GLOBAL_VARIABLE_GUID, "ErrOutDev", validate_device_path },
+ { EFI_GLOBAL_VARIABLE_GUID, "Lang", validate_ascii_string },
+ { EFI_GLOBAL_VARIABLE_GUID, "OsIndications", NULL },
+ { EFI_GLOBAL_VARIABLE_GUID, "PlatformLang", validate_ascii_string },
+ { EFI_GLOBAL_VARIABLE_GUID, "Timeout", validate_uint16 },
+ { LINUX_EFI_CRASH_GUID, "*", NULL },
+ { NULL_GUID, "", NULL },
};
+static bool
+variable_matches(const char *var_name, size_t len, const char *match_name,
+ int *match)
+{
+ for (*match = 0; ; (*match)++) {
+ char c = match_name[*match];
+ char u = var_name[*match];
+
+ /* Wildcard in the matching name means we've matched */
+ if (c == '*')
+ return true;
+
+ /* Case sensitive match */
+ if (!c && *match == len)
+ return true;
+
+ if (c != u)
+ return false;
+
+ if (!c)
+ return true;
+ }
+ return true;
+}
+
bool
-efivar_validate(struct efi_variable *var, u8 *data, unsigned long len)
+efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
+ unsigned long data_size)
{
int i;
- u16 *unicode_name = var->VariableName;
+ unsigned long utf8_size;
+ u8 *utf8_name;
- for (i = 0; variable_validate[i].validate != NULL; i++) {
- const char *name = variable_validate[i].name;
- int match;
+ utf8_size = ucs2_utf8size(var_name);
+ utf8_name = kmalloc(utf8_size + 1, GFP_KERNEL);
+ if (!utf8_name)
+ return false;
- for (match = 0; ; match++) {
- char c = name[match];
- u16 u = unicode_name[match];
+ ucs2_as_utf8(utf8_name, var_name, utf8_size);
+ utf8_name[utf8_size] = '\0';
- /* All special variables are plain ascii */
- if (u > 127)
- return true;
+ for (i = 0; variable_validate[i].name[0] != '\0'; i++) {
+ const char *name = variable_validate[i].name;
+ int match = 0;
- /* Wildcard in the matching name means we've matched */
- if (c == '*')
- return variable_validate[i].validate(var,
- match, data, len);
+ if (efi_guidcmp(vendor, variable_validate[i].vendor))
+ continue;
- /* Case sensitive match */
- if (c != u)
+ if (variable_matches(utf8_name, utf8_size+1, name, &match)) {
+ if (variable_validate[i].validate == NULL)
break;
-
- /* Reached the end of the string while matching */
- if (!c)
- return variable_validate[i].validate(var,
- match, data, len);
+ kfree(utf8_name);
+ return variable_validate[i].validate(var_name, match,
+ data, data_size);
}
}
-
+ kfree(utf8_name);
return true;
}
EXPORT_SYMBOL_GPL(efivar_validate);
+bool
+efivar_variable_is_removable(efi_guid_t vendor, const char *var_name,
+ size_t len)
+{
+ int i;
+ bool found = false;
+ int match = 0;
+
+ /*
+ * Check if our variable is in the validated variables list
+ */
+ for (i = 0; variable_validate[i].name[0] != '\0'; i++) {
+ if (efi_guidcmp(variable_validate[i].vendor, vendor))
+ continue;
+
+ if (variable_matches(var_name, len,
+ variable_validate[i].name, &match)) {
+ found = true;
+ break;
+ }
+ }
+
+ /*
+ * If it's in our list, it is removable.
+ */
+ return found;
+}
+EXPORT_SYMBOL_GPL(efivar_variable_is_removable);
+
static efi_status_t
check_var_size(u32 attributes, unsigned long size)
{
@@ -805,7 +871,7 @@ int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
*set = false;
- if (efivar_validate(&entry->var, data, *size) == false)
+ if (efivar_validate(*vendor, name, data, *size) == false)
return -EINVAL;
/*
diff --git a/fs/efivarfs/file.c b/fs/efivarfs/file.c
index 8dd524f32284..08f105a06fbf 100644
--- a/fs/efivarfs/file.c
+++ b/fs/efivarfs/file.c
@@ -10,6 +10,7 @@
#include <linux/efi.h>
#include <linux/fs.h>
#include <linux/slab.h>
+#include <linux/mount.h>
#include "internal.h"
@@ -108,9 +109,79 @@ out_free:
return size;
}
+static int
+efivarfs_ioc_getxflags(struct file *file, void __user *arg)
+{
+ struct inode *inode = file->f_mapping->host;
+ unsigned int i_flags;
+ unsigned int flags = 0;
+
+ i_flags = inode->i_flags;
+ if (i_flags & S_IMMUTABLE)
+ flags |= FS_IMMUTABLE_FL;
+
+ if (copy_to_user(arg, &flags, sizeof(flags)))
+ return -EFAULT;
+ return 0;
+}
+
+static int
+efivarfs_ioc_setxflags(struct file *file, void __user *arg)
+{
+ struct inode *inode = file->f_mapping->host;
+ unsigned int flags;
+ unsigned int i_flags = 0;
+ int error;
+
+ if (!inode_owner_or_capable(inode))
+ return -EACCES;
+
+ if (copy_from_user(&flags, arg, sizeof(flags)))
+ return -EFAULT;
+
+ if (flags & ~FS_IMMUTABLE_FL)
+ return -EOPNOTSUPP;
+
+ if (!capable(CAP_LINUX_IMMUTABLE))
+ return -EPERM;
+
+ if (flags & FS_IMMUTABLE_FL)
+ i_flags |= S_IMMUTABLE;
+
+
+ error = mnt_want_write_file(file);
+ if (error)
+ return error;
+
+ mutex_lock(&inode->i_mutex);
+ inode->i_flags &= ~S_IMMUTABLE;
+ inode->i_flags |= i_flags;
+ mutex_unlock(&inode->i_mutex);
+
+ mnt_drop_write_file(file);
+
+ return 0;
+}
+
+long
+efivarfs_file_ioctl(struct file *file, unsigned int cmd, unsigned long p)
+{
+ void __user *arg = (void __user *)p;
+
+ switch (cmd) {
+ case FS_IOC_GETFLAGS:
+ return efivarfs_ioc_getxflags(file, arg);
+ case FS_IOC_SETFLAGS:
+ return efivarfs_ioc_setxflags(file, arg);
+ }
+
+ return -ENOTTY;
+}
+
const struct file_operations efivarfs_file_operations = {
.open = simple_open,
.read = efivarfs_file_read,
.write = efivarfs_file_write,
.llseek = no_llseek,
+ .unlocked_ioctl = efivarfs_file_ioctl,
};
diff --git a/fs/efivarfs/inode.c b/fs/efivarfs/inode.c
index 07ab49745e31..7e7318f10575 100644
--- a/fs/efivarfs/inode.c
+++ b/fs/efivarfs/inode.c
@@ -15,7 +15,8 @@
#include "internal.h"
struct inode *efivarfs_get_inode(struct super_block *sb,
- const struct inode *dir, int mode, dev_t dev)
+ const struct inode *dir, int mode,
+ dev_t dev, bool is_removable)
{
struct inode *inode = new_inode(sb);
@@ -23,6 +24,7 @@ struct inode *efivarfs_get_inode(struct super_block *sb,
inode->i_ino = get_next_ino();
inode->i_mode = mode;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->i_flags = is_removable ? 0 : S_IMMUTABLE;
switch (mode & S_IFMT) {
case S_IFREG:
inode->i_fop = &efivarfs_file_operations;
@@ -102,22 +104,17 @@ static void efivarfs_hex_to_guid(const char *str, efi_guid_t *guid)
static int efivarfs_create(struct inode *dir, struct dentry *dentry,
umode_t mode, bool excl)
{
- struct inode *inode;
+ struct inode *inode = NULL;
struct efivar_entry *var;
int namelen, i = 0, err = 0;
+ bool is_removable = false;
if (!efivarfs_valid_name(dentry->d_name.name, dentry->d_name.len))
return -EINVAL;
- inode = efivarfs_get_inode(dir->i_sb, dir, mode, 0);
- if (!inode)
- return -ENOMEM;
-
var = kzalloc(sizeof(struct efivar_entry), GFP_KERNEL);
- if (!var) {
- err = -ENOMEM;
- goto out;
- }
+ if (!var)
+ return -ENOMEM;
/* length of the variable name itself: remove GUID and separator */
namelen = dentry->d_name.len - EFI_VARIABLE_GUID_LEN - 1;
@@ -125,6 +122,16 @@ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
efivarfs_hex_to_guid(dentry->d_name.name + namelen + 1,
&var->var.VendorGuid);
+ if (efivar_variable_is_removable(var->var.VendorGuid,
+ dentry->d_name.name, namelen))
+ is_removable = true;
+
+ inode = efivarfs_get_inode(dir->i_sb, dir, mode, 0, is_removable);
+ if (!inode) {
+ err = -ENOMEM;
+ goto out;
+ }
+
for (i = 0; i < namelen; i++)
var->var.VariableName[i] = dentry->d_name.name[i];
@@ -138,7 +145,8 @@ static int efivarfs_create(struct inode *dir, struct dentry *dentry,
out:
if (err) {
kfree(var);
- iput(inode);
+ if (inode)
+ iput(inode);
}
return err;
}
diff --git a/fs/efivarfs/internal.h b/fs/efivarfs/internal.h
index b5ff16addb7c..b4505188e799 100644
--- a/fs/efivarfs/internal.h
+++ b/fs/efivarfs/internal.h
@@ -15,7 +15,8 @@ extern const struct file_operations efivarfs_file_operations;
extern const struct inode_operations efivarfs_dir_inode_operations;
extern bool efivarfs_valid_name(const char *str, int len);
extern struct inode *efivarfs_get_inode(struct super_block *sb,
- const struct inode *dir, int mode, dev_t dev);
+ const struct inode *dir, int mode, dev_t dev,
+ bool is_removable);
extern struct list_head efivarfs_list;
diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c
index becc725a1953..a3a30f84f917 100644
--- a/fs/efivarfs/super.c
+++ b/fs/efivarfs/super.c
@@ -118,8 +118,9 @@ static int efivarfs_callback(efi_char16_t *name16, efi_guid_t vendor,
struct dentry *dentry, *root = sb->s_root;
unsigned long size = 0;
char *name;
- int len, i;
+ int len;
int err = -ENOMEM;
+ bool is_removable = false;
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
if (!entry)
@@ -128,15 +129,17 @@ static int efivarfs_callback(efi_char16_t *name16, efi_guid_t vendor,
memcpy(entry->var.VariableName, name16, name_size);
memcpy(&(entry->var.VendorGuid), &vendor, sizeof(efi_guid_t));
- len = ucs2_strlen(entry->var.VariableName);
+ len = ucs2_utf8size(entry->var.VariableName);
/* name, plus '-', plus GUID, plus NUL*/
name = kmalloc(len + 1 + EFI_VARIABLE_GUID_LEN + 1, GFP_KERNEL);
if (!name)
goto fail;
- for (i = 0; i < len; i++)
- name[i] = entry->var.VariableName[i] & 0xFF;
+ ucs2_as_utf8(name, entry->var.VariableName, len);
+
+ if (efivar_variable_is_removable(entry->var.VendorGuid, name, len))
+ is_removable = true;
name[len] = '-';
@@ -144,7 +147,8 @@ static int efivarfs_callback(efi_char16_t *name16, efi_guid_t vendor,
name[len + EFI_VARIABLE_GUID_LEN+1] = '\0';
- inode = efivarfs_get_inode(sb, root->d_inode, S_IFREG | 0644, 0);
+ inode = efivarfs_get_inode(sb, root->d_inode, S_IFREG | 0644, 0,
+ is_removable);
if (!inode)
goto fail_name;
@@ -200,7 +204,7 @@ static int efivarfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_d_op = &efivarfs_d_ops;
sb->s_time_gran = 1;
- inode = efivarfs_get_inode(sb, NULL, S_IFDIR | 0755, 0);
+ inode = efivarfs_get_inode(sb, NULL, S_IFDIR | 0755, 0, true);
if (!inode)
return -ENOMEM;
inode->i_op = &efivarfs_dir_inode_operations;
diff --git a/include/crypto/if_alg.h b/include/crypto/if_alg.h
index 2f38daaab3d7..d61c11170213 100644
--- a/include/crypto/if_alg.h
+++ b/include/crypto/if_alg.h
@@ -30,8 +30,6 @@ struct alg_sock {
struct sock *parent;
- unsigned int refcnt;
-
const struct af_alg_type *type;
void *private;
};
@@ -66,7 +64,6 @@ int af_alg_register_type(const struct af_alg_type *type);
int af_alg_unregister_type(const struct af_alg_type *type);
int af_alg_release(struct socket *sock);
-void af_alg_release_parent(struct sock *sk);
int af_alg_accept(struct sock *sk, struct socket *newsock);
int af_alg_make_sg(struct af_alg_sgl *sgl, void __user *addr, int len,
@@ -83,6 +80,11 @@ static inline struct alg_sock *alg_sk(struct sock *sk)
return (struct alg_sock *)sk;
}
+static inline void af_alg_release_parent(struct sock *sk)
+{
+ sock_put(alg_sk(sk)->parent);
+}
+
static inline void af_alg_init_completion(struct af_alg_completion *completion)
{
init_completion(&completion->completion);
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 0a819e7a60c9..b39a4651360a 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -792,8 +792,10 @@ struct efivars {
* and we use a page for reading/writing.
*/
+#define EFI_VAR_NAME_LEN 1024
+
struct efi_variable {
- efi_char16_t VariableName[1024/sizeof(efi_char16_t)];
+ efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
efi_guid_t VendorGuid;
unsigned long DataSize;
__u8 Data[1024];
@@ -864,7 +866,10 @@ int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
struct list_head *head, bool remove);
-bool efivar_validate(struct efi_variable *var, u8 *data, unsigned long len);
+bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
+ unsigned long data_size);
+bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
+ size_t len);
extern struct work_struct efivar_work;
void efivar_run_worker(void);
diff --git a/include/linux/module.h b/include/linux/module.h
index eaf60ff9ba94..adea1d663a06 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -227,6 +227,12 @@ struct module_ref {
unsigned long decs;
} __attribute((aligned(2 * sizeof(unsigned long))));
+struct mod_kallsyms {
+ Elf_Sym *symtab;
+ unsigned int num_symtab;
+ char *strtab;
+};
+
struct module {
enum module_state state;
@@ -314,14 +320,9 @@ struct module {
#endif
#ifdef CONFIG_KALLSYMS
- /*
- * We keep the symbol and string tables for kallsyms.
- * The core_* fields below are temporary, loader-only (they
- * could really be discarded after module init).
- */
- Elf_Sym *symtab, *core_symtab;
- unsigned int num_symtab, core_num_syms;
- char *strtab, *core_strtab;
+ /* Protected by RCU and/or module_mutex: use rcu_dereference() */
+ struct mod_kallsyms *kallsyms;
+ struct mod_kallsyms core_kallsyms;
/* Section attributes */
struct module_sect_attrs *sect_attrs;
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 97c8689c7e51..326f8b238c31 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -129,9 +129,6 @@ static inline void tracepoint_synchronize_unregister(void)
void *it_func; \
void *__data; \
\
- if (!cpu_online(raw_smp_processor_id())) \
- return; \
- \
if (!(cond)) \
return; \
prercu; \
@@ -265,15 +262,19 @@ static inline void tracepoint_synchronize_unregister(void)
* "void *__data, proto" as the callback prototype.
*/
#define DECLARE_TRACE_NOARGS(name) \
- __DECLARE_TRACE(name, void, , 1, void *__data, __data)
+ __DECLARE_TRACE(name, void, , \
+ cpu_online(raw_smp_processor_id()), \
+ void *__data, __data)
#define DECLARE_TRACE(name, proto, args) \
- __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), 1, \
- PARAMS(void *__data, proto), \
- PARAMS(__data, args))
+ __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \
+ cpu_online(raw_smp_processor_id()), \
+ PARAMS(void *__data, proto), \
+ PARAMS(__data, args))
#define DECLARE_TRACE_CONDITION(name, proto, args, cond) \
- __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), PARAMS(cond), \
+ __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \
+ cpu_online(raw_smp_processor_id()) && (PARAMS(cond)), \
PARAMS(void *__data, proto), \
PARAMS(__data, args))
diff --git a/include/linux/ucs2_string.h b/include/linux/ucs2_string.h
index cbb20afdbc01..bb679b48f408 100644
--- a/include/linux/ucs2_string.h
+++ b/include/linux/ucs2_string.h
@@ -11,4 +11,8 @@ unsigned long ucs2_strlen(const ucs2_char_t *s);
unsigned long ucs2_strsize(const ucs2_char_t *data, unsigned long maxlength);
int ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len);
+unsigned long ucs2_utf8size(const ucs2_char_t *src);
+unsigned long ucs2_as_utf8(u8 *dest, const ucs2_char_t *src,
+ unsigned long maxlength);
+
#endif /* _LINUX_UCS2_STRING_H_ */
diff --git a/kernel/module.c b/kernel/module.c
index e40617fac8ad..3a311a1d26d7 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -180,6 +180,9 @@ struct load_info {
struct _ddebug *debug;
unsigned int num_debug;
bool sig_ok;
+#ifdef CONFIG_KALLSYMS
+ unsigned long mod_kallsyms_init_off;
+#endif
struct {
unsigned int sym, str, mod, vers, info, pcpu;
} index;
@@ -2320,8 +2323,20 @@ static void layout_symtab(struct module *mod, struct load_info *info)
strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect,
info->index.str) | INIT_OFFSET_MASK;
pr_debug("\t%s\n", info->secstrings + strsect->sh_name);
+
+ /* We'll tack temporary mod_kallsyms on the end. */
+ mod->init_size = ALIGN(mod->init_size,
+ __alignof__(struct mod_kallsyms));
+ info->mod_kallsyms_init_off = mod->init_size;
+ mod->init_size += sizeof(struct mod_kallsyms);
+ mod->init_size = debug_align(mod->init_size);
}
+/*
+ * We use the full symtab and strtab which layout_symtab arranged to
+ * be appended to the init section. Later we switch to the cut-down
+ * core-only ones.
+ */
static void add_kallsyms(struct module *mod, const struct load_info *info)
{
unsigned int i, ndst;
@@ -2330,28 +2345,33 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
char *s;
Elf_Shdr *symsec = &info->sechdrs[info->index.sym];
- mod->symtab = (void *)symsec->sh_addr;
- mod->num_symtab = symsec->sh_size / sizeof(Elf_Sym);
+ /* Set up to point into init section. */
+ mod->kallsyms = mod->module_init + info->mod_kallsyms_init_off;
+
+ mod->kallsyms->symtab = (void *)symsec->sh_addr;
+ mod->kallsyms->num_symtab = symsec->sh_size / sizeof(Elf_Sym);
/* Make sure we get permanent strtab: don't use info->strtab. */
- mod->strtab = (void *)info->sechdrs[info->index.str].sh_addr;
+ mod->kallsyms->strtab = (void *)info->sechdrs[info->index.str].sh_addr;
/* Set types up while we still have access to sections. */
- for (i = 0; i < mod->num_symtab; i++)
- mod->symtab[i].st_info = elf_type(&mod->symtab[i], info);
-
- mod->core_symtab = dst = mod->module_core + info->symoffs;
- mod->core_strtab = s = mod->module_core + info->stroffs;
- src = mod->symtab;
- for (ndst = i = 0; i < mod->num_symtab; i++) {
+ for (i = 0; i < mod->kallsyms->num_symtab; i++)
+ mod->kallsyms->symtab[i].st_info
+ = elf_type(&mod->kallsyms->symtab[i], info);
+
+ /* Now populate the cut down core kallsyms for after init. */
+ mod->core_kallsyms.symtab = dst = mod->module_core + info->symoffs;
+ mod->core_kallsyms.strtab = s = mod->module_core + info->stroffs;
+ src = mod->kallsyms->symtab;
+ for (ndst = i = 0; i < mod->kallsyms->num_symtab; i++) {
if (i == 0 ||
is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) {
dst[ndst] = src[i];
- dst[ndst++].st_name = s - mod->core_strtab;
- s += strlcpy(s, &mod->strtab[src[i].st_name],
+ dst[ndst++].st_name = s - mod->core_kallsyms.strtab;
+ s += strlcpy(s, &mod->kallsyms->strtab[src[i].st_name],
KSYM_NAME_LEN) + 1;
}
}
- mod->core_num_syms = ndst;
+ mod->core_kallsyms.num_symtab = ndst;
}
#else
static inline void layout_symtab(struct module *mod, struct load_info *info)
@@ -3089,9 +3109,8 @@ static int do_init_module(struct module *mod)
module_put(mod);
trim_init_extable(mod);
#ifdef CONFIG_KALLSYMS
- mod->num_symtab = mod->core_num_syms;
- mod->symtab = mod->core_symtab;
- mod->strtab = mod->core_strtab;
+ /* Switch to core kallsyms now init is done: kallsyms may be walking! */
+ rcu_assign_pointer(mod->kallsyms, &mod->core_kallsyms);
#endif
unset_module_init_ro_nx(mod);
module_free(mod, mod->module_init);
@@ -3381,9 +3400,9 @@ static inline int is_arm_mapping_symbol(const char *str)
&& (str[2] == '\0' || str[2] == '.');
}
-static const char *symname(struct module *mod, unsigned int symnum)
+static const char *symname(struct mod_kallsyms *kallsyms, unsigned int symnum)
{
- return mod->strtab + mod->symtab[symnum].st_name;
+ return kallsyms->strtab + kallsyms->symtab[symnum].st_name;
}
static const char *get_ksymbol(struct module *mod,
@@ -3393,6 +3412,7 @@ static const char *get_ksymbol(struct module *mod,
{
unsigned int i, best = 0;
unsigned long nextval;
+ struct mod_kallsyms *kallsyms = rcu_dereference_sched(mod->kallsyms);
/* At worse, next value is at end of module */
if (within_module_init(addr, mod))
@@ -3402,32 +3422,32 @@ static const char *get_ksymbol(struct module *mod,
/* Scan for closest preceding symbol, and next symbol. (ELF
starts real symbols at 1). */
- for (i = 1; i < mod->num_symtab; i++) {
- if (mod->symtab[i].st_shndx == SHN_UNDEF)
+ for (i = 1; i < kallsyms->num_symtab; i++) {
+ if (kallsyms->symtab[i].st_shndx == SHN_UNDEF)
continue;
/* We ignore unnamed symbols: they're uninformative
* and inserted at a whim. */
- if (*symname(mod, i) == '\0'
- || is_arm_mapping_symbol(symname(mod, i)))
+ if (*symname(kallsyms, i) == '\0'
+ || is_arm_mapping_symbol(symname(kallsyms, i)))
continue;
- if (mod->symtab[i].st_value <= addr
- && mod->symtab[i].st_value > mod->symtab[best].st_value)
+ if (kallsyms->symtab[i].st_value <= addr
+ && kallsyms->symtab[i].st_value > kallsyms->symtab[best].st_value)
best = i;
- if (mod->symtab[i].st_value > addr
- && mod->symtab[i].st_value < nextval)
- nextval = mod->symtab[i].st_value;
+ if (kallsyms->symtab[i].st_value > addr
+ && kallsyms->symtab[i].st_value < nextval)
+ nextval = kallsyms->symtab[i].st_value;
}
if (!best)
return NULL;
if (size)
- *size = nextval - mod->symtab[best].st_value;
+ *size = nextval - kallsyms->symtab[best].st_value;
if (offset)
- *offset = addr - mod->symtab[best].st_value;
- return symname(mod, best);
+ *offset = addr - kallsyms->symtab[best].st_value;
+ return symname(kallsyms, best);
}
/* For kallsyms to ask for address resolution. NULL means not found. Careful
@@ -3523,18 +3543,21 @@ int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
preempt_disable();
list_for_each_entry_rcu(mod, &modules, list) {
+ struct mod_kallsyms *kallsyms;
+
if (mod->state == MODULE_STATE_UNFORMED)
continue;
- if (symnum < mod->num_symtab) {
- *value = mod->symtab[symnum].st_value;
- *type = mod->symtab[symnum].st_info;
- strlcpy(name, symname(mod, symnum), KSYM_NAME_LEN);
+ kallsyms = rcu_dereference_sched(mod->kallsyms);
+ if (symnum < kallsyms->num_symtab) {
+ *value = kallsyms->symtab[symnum].st_value;
+ *type = kallsyms->symtab[symnum].st_info;
+ strlcpy(name, symname(kallsyms, symnum), KSYM_NAME_LEN);
strlcpy(module_name, mod->name, MODULE_NAME_LEN);
*exported = is_exported(name, *value, mod);
preempt_enable();
return 0;
}
- symnum -= mod->num_symtab;
+ symnum -= kallsyms->num_symtab;
}
preempt_enable();
return -ERANGE;
@@ -3543,11 +3566,12 @@ int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
static unsigned long mod_find_symname(struct module *mod, const char *name)
{
unsigned int i;
+ struct mod_kallsyms *kallsyms = rcu_dereference_sched(mod->kallsyms);
- for (i = 0; i < mod->num_symtab; i++)
- if (strcmp(name, symname(mod, i)) == 0 &&
- mod->symtab[i].st_info != 'U')
- return mod->symtab[i].st_value;
+ for (i = 0; i < kallsyms->num_symtab; i++)
+ if (strcmp(name, symname(kallsyms, i)) == 0 &&
+ kallsyms->symtab[i].st_info != 'U')
+ return kallsyms->symtab[i].st_value;
return 0;
}
@@ -3584,11 +3608,14 @@ int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
int ret;
list_for_each_entry(mod, &modules, list) {
+ /* We hold module_mutex: no need for rcu_dereference_sched */
+ struct mod_kallsyms *kallsyms = mod->kallsyms;
+
if (mod->state == MODULE_STATE_UNFORMED)
continue;
- for (i = 0; i < mod->num_symtab; i++) {
- ret = fn(data, symname(mod, i),
- mod, mod->symtab[i].st_value);
+ for (i = 0; i < kallsyms->num_symtab; i++) {
+ ret = fn(data, symname(kallsyms, i),
+ mod, kallsyms->symtab[i].st_value);
if (ret != 0)
return ret;
}
diff --git a/lib/ucs2_string.c b/lib/ucs2_string.c
index 6f500ef2301d..f0b323abb4c6 100644
--- a/lib/ucs2_string.c
+++ b/lib/ucs2_string.c
@@ -49,3 +49,65 @@ ucs2_strncmp(const ucs2_char_t *a, const ucs2_char_t *b, size_t len)
}
}
EXPORT_SYMBOL(ucs2_strncmp);
+
+unsigned long
+ucs2_utf8size(const ucs2_char_t *src)
+{
+ unsigned long i;
+ unsigned long j = 0;
+
+ for (i = 0; i < ucs2_strlen(src); i++) {
+ u16 c = src[i];
+
+ if (c >= 0x800)
+ j += 3;
+ else if (c >= 0x80)
+ j += 2;
+ else
+ j += 1;
+ }
+
+ return j;
+}
+EXPORT_SYMBOL(ucs2_utf8size);
+
+/*
+ * copy at most maxlength bytes of whole utf8 characters to dest from the
+ * ucs2 string src.
+ *
+ * The return value is the number of characters copied, not including the
+ * final NUL character.
+ */
+unsigned long
+ucs2_as_utf8(u8 *dest, const ucs2_char_t *src, unsigned long maxlength)
+{
+ unsigned int i;
+ unsigned long j = 0;
+ unsigned long limit = ucs2_strnlen(src, maxlength);
+
+ for (i = 0; maxlength && i < limit; i++) {
+ u16 c = src[i];
+
+ if (c >= 0x800) {
+ if (maxlength < 3)
+ break;
+ maxlength -= 3;
+ dest[j++] = 0xe0 | (c & 0xf000) >> 12;
+ dest[j++] = 0x80 | (c & 0x0fc0) >> 6;
+ dest[j++] = 0x80 | (c & 0x003f);
+ } else if (c >= 0x80) {
+ if (maxlength < 2)
+ break;
+ maxlength -= 2;
+ dest[j++] = 0xc0 | (c & 0x7c0) >> 6;
+ dest[j++] = 0x80 | (c & 0x03f);
+ } else {
+ maxlength -= 1;
+ dest[j++] = c & 0x7f;
+ }
+ }
+ if (maxlength)
+ dest[j] = '\0';
+ return j;
+}
+EXPORT_SYMBOL(ucs2_as_utf8);
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 31bf2586fb84..864408026202 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -290,7 +290,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
}
/* prepare A-MPDU MLME for Rx aggregation */
- tid_agg_rx = kmalloc(sizeof(struct tid_ampdu_rx), GFP_KERNEL);
+ tid_agg_rx = kzalloc(sizeof(*tid_agg_rx), GFP_KERNEL);
if (!tid_agg_rx)
goto end;
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index c1b5b73c5b91..c3111e2b6fa0 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -463,7 +463,7 @@ minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
return;
- ieee80211_start_tx_ba_session(pubsta, tid, 5000);
+ ieee80211_start_tx_ba_session(pubsta, tid, 0);
}
static void
diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
index c8717c1d082e..87dd619fb2e9 100644
--- a/net/wireless/wext-core.c
+++ b/net/wireless/wext-core.c
@@ -342,6 +342,39 @@ static const int compat_event_type_size[] = {
/* IW event code */
+static void wireless_nlevent_flush(void)
+{
+ struct sk_buff *skb;
+ struct net *net;
+
+ ASSERT_RTNL();
+
+ for_each_net(net) {
+ while ((skb = skb_dequeue(&net->wext_nlevents)))
+ rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL,
+ GFP_KERNEL);
+ }
+}
+
+static int wext_netdev_notifier_call(struct notifier_block *nb,
+ unsigned long state, void *ptr)
+{
+ /*
+ * When a netdev changes state in any way, flush all pending messages
+ * to avoid them going out in a strange order, e.g. RTM_NEWLINK after
+ * RTM_DELLINK, or with IFF_UP after without IFF_UP during dev_close()
+ * or similar - all of which could otherwise happen due to delays from
+ * schedule_work().
+ */
+ wireless_nlevent_flush();
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block wext_netdev_notifier = {
+ .notifier_call = wext_netdev_notifier_call,
+};
+
static int __net_init wext_pernet_init(struct net *net)
{
skb_queue_head_init(&net->wext_nlevents);
@@ -360,7 +393,12 @@ static struct pernet_operations wext_pernet_ops = {
static int __init wireless_nlevent_init(void)
{
- return register_pernet_subsys(&wext_pernet_ops);
+ int err = register_pernet_subsys(&wext_pernet_ops);
+
+ if (err)
+ return err;
+
+ return register_netdevice_notifier(&wext_netdev_notifier);
}
subsys_initcall(wireless_nlevent_init);
@@ -368,17 +406,8 @@ subsys_initcall(wireless_nlevent_init);
/* Process events generated by the wireless layer or the driver. */
static void wireless_nlevent_process(struct work_struct *work)
{
- struct sk_buff *skb;
- struct net *net;
-
rtnl_lock();
-
- for_each_net(net) {
- while ((skb = skb_dequeue(&net->wext_nlevents)))
- rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL,
- GFP_KERNEL);
- }
-
+ wireless_nlevent_flush();
rtnl_unlock();
}
diff --git a/sound/soc/codecs/wm8958-dsp2.c b/sound/soc/codecs/wm8958-dsp2.c
index d4248e00160e..4f736197f6ee 100644
--- a/sound/soc/codecs/wm8958-dsp2.c
+++ b/sound/soc/codecs/wm8958-dsp2.c
@@ -459,7 +459,7 @@ static int wm8958_put_mbc_enum(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
struct wm8994 *control = wm8994->wm8994;
- int value = ucontrol->value.integer.value[0];
+ int value = ucontrol->value.enumerated.item[0];
int reg;
/* Don't allow on the fly reconfiguration */
@@ -549,7 +549,7 @@ static int wm8958_put_vss_enum(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
struct wm8994 *control = wm8994->wm8994;
- int value = ucontrol->value.integer.value[0];
+ int value = ucontrol->value.enumerated.item[0];
int reg;
/* Don't allow on the fly reconfiguration */
@@ -582,7 +582,7 @@ static int wm8958_put_vss_hpf_enum(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
struct wm8994 *control = wm8994->wm8994;
- int value = ucontrol->value.integer.value[0];
+ int value = ucontrol->value.enumerated.item[0];
int reg;
/* Don't allow on the fly reconfiguration */
@@ -749,7 +749,7 @@ static int wm8958_put_enh_eq_enum(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
struct wm8994 *control = wm8994->wm8994;
- int value = ucontrol->value.integer.value[0];
+ int value = ucontrol->value.enumerated.item[0];
int reg;
/* Don't allow on the fly reconfiguration */
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 66aec0c3b7bb..355b07e4fe2a 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -360,7 +360,7 @@ static int wm8994_put_drc_enum(struct snd_kcontrol *kcontrol,
struct wm8994 *control = wm8994->wm8994;
struct wm8994_pdata *pdata = &control->pdata;
int drc = wm8994_get_drc(kcontrol->id.name);
- int value = ucontrol->value.integer.value[0];
+ int value = ucontrol->value.enumerated.item[0];
if (drc < 0)
return drc;
@@ -467,7 +467,7 @@ static int wm8994_put_retune_mobile_enum(struct snd_kcontrol *kcontrol,
struct wm8994 *control = wm8994->wm8994;
struct wm8994_pdata *pdata = &control->pdata;
int block = wm8994_get_retune_mobile_block(kcontrol->id.name);
- int value = ucontrol->value.integer.value[0];
+ int value = ucontrol->value.enumerated.item[0];
if (block < 0)
return block;
diff --git a/tools/testing/selftests/efivarfs/efivarfs.sh b/tools/testing/selftests/efivarfs/efivarfs.sh
index 77edcdcc016b..057278448515 100644
--- a/tools/testing/selftests/efivarfs/efivarfs.sh
+++ b/tools/testing/selftests/efivarfs/efivarfs.sh
@@ -88,7 +88,11 @@ test_delete()
exit 1
fi
- rm $file
+ rm $file 2>/dev/null
+ if [ $? -ne 0 ]; then
+ chattr -i $file
+ rm $file
+ fi
if [ -e $file ]; then
echo "$file couldn't be deleted" >&2
@@ -111,6 +115,7 @@ test_zero_size_delete()
exit 1
fi
+ chattr -i $file
printf "$attrs" > $file
if [ -e $file ]; then
@@ -141,7 +146,11 @@ test_valid_filenames()
echo "$file could not be created" >&2
ret=1
else
- rm $file
+ rm $file 2>/dev/null
+ if [ $? -ne 0 ]; then
+ chattr -i $file
+ rm $file
+ fi
fi
done
@@ -174,7 +183,11 @@ test_invalid_filenames()
if [ -e $file ]; then
echo "Creating $file should have failed" >&2
- rm $file
+ rm $file 2>/dev/null
+ if [ $? -ne 0 ]; then
+ chattr -i $file
+ rm $file
+ fi
ret=1
fi
done
diff --git a/tools/testing/selftests/efivarfs/open-unlink.c b/tools/testing/selftests/efivarfs/open-unlink.c
index 8c0764407b3c..4af74f733036 100644
--- a/tools/testing/selftests/efivarfs/open-unlink.c
+++ b/tools/testing/selftests/efivarfs/open-unlink.c
@@ -1,10 +1,68 @@
+#include <errno.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
+#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
+#include <linux/fs.h>
+
+static int set_immutable(const char *path, int immutable)
+{
+ unsigned int flags;
+ int fd;
+ int rc;
+ int error;
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ return fd;
+
+ rc = ioctl(fd, FS_IOC_GETFLAGS, &flags);
+ if (rc < 0) {
+ error = errno;
+ close(fd);
+ errno = error;
+ return rc;
+ }
+
+ if (immutable)
+ flags |= FS_IMMUTABLE_FL;
+ else
+ flags &= ~FS_IMMUTABLE_FL;
+
+ rc = ioctl(fd, FS_IOC_SETFLAGS, &flags);
+ error = errno;
+ close(fd);
+ errno = error;
+ return rc;
+}
+
+static int get_immutable(const char *path)
+{
+ unsigned int flags;
+ int fd;
+ int rc;
+ int error;
+
+ fd = open(path, O_RDONLY);
+ if (fd < 0)
+ return fd;
+
+ rc = ioctl(fd, FS_IOC_GETFLAGS, &flags);
+ if (rc < 0) {
+ error = errno;
+ close(fd);
+ errno = error;
+ return rc;
+ }
+ close(fd);
+ if (flags & FS_IMMUTABLE_FL)
+ return 1;
+ return 0;
+}
int main(int argc, char **argv)
{
@@ -27,7 +85,7 @@ int main(int argc, char **argv)
buf[4] = 0;
/* create a test variable */
- fd = open(path, O_WRONLY | O_CREAT);
+ fd = open(path, O_WRONLY | O_CREAT, 0600);
if (fd < 0) {
perror("open(O_WRONLY)");
return EXIT_FAILURE;
@@ -41,6 +99,18 @@ int main(int argc, char **argv)
close(fd);
+ rc = get_immutable(path);
+ if (rc < 0) {
+ perror("ioctl(FS_IOC_GETFLAGS)");
+ return EXIT_FAILURE;
+ } else if (rc) {
+ rc = set_immutable(path, 0);
+ if (rc < 0) {
+ perror("ioctl(FS_IOC_SETFLAGS)");
+ return EXIT_FAILURE;
+ }
+ }
+
fd = open(path, O_RDONLY);
if (fd < 0) {
perror("open");
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