diff --git a/Makefile b/Makefile
index 11acd6dd024a..3f578adbe7fe 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 4
-SUBLEVEL = 262
+SUBLEVEL = 263
 EXTRAVERSION =
 NAME = Blurry Fish Butt
 
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 5e8fc9809da3..497ad354e123 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1040,6 +1040,16 @@ static int mp_map_pin_to_irq(u32 gsi, int idx, int 
ioapic, int pin,
        if (idx >= 0 && test_bit(mp_irqs[idx].srcbus, mp_bus_not_pci)) {
                irq = mp_irqs[idx].srcbusirq;
                legacy = mp_is_legacy_irq(irq);
+               /*
+                * IRQ2 is unusable for historical reasons on systems which
+                * have a legacy PIC. See the comment vs. IRQ2 further down.
+                *
+                * If this gets removed at some point then the related code
+                * in lapic_assign_system_vectors() needs to be adjusted as
+                * well.
+                */
+               if (legacy && irq == PIC_CASCADE_IR)
+                       return -EINVAL;
        }
 
        mutex_lock(&ioapic_mutex);
diff --git a/drivers/pci/hotplug/rpadlpar_sysfs.c 
b/drivers/pci/hotplug/rpadlpar_sysfs.c
index a796301ea03f..ca9d832bd9f8 100644
--- a/drivers/pci/hotplug/rpadlpar_sysfs.c
+++ b/drivers/pci/hotplug/rpadlpar_sysfs.c
@@ -39,12 +39,11 @@ static ssize_t add_slot_store(struct kobject *kobj, struct 
kobj_attribute *attr,
        if (nbytes >= MAX_DRC_NAME_LEN)
                return 0;
 
-       memcpy(drc_name, buf, nbytes);
+       strscpy(drc_name, buf, nbytes + 1);
 
        end = strchr(drc_name, '\n');
-       if (!end)
-               end = &drc_name[nbytes];
-       *end = '\0';
+       if (end)
+               *end = '\0';
 
        rc = dlpar_add_slot(drc_name);
        if (rc)
@@ -70,12 +69,11 @@ static ssize_t remove_slot_store(struct kobject *kobj,
        if (nbytes >= MAX_DRC_NAME_LEN)
                return 0;
 
-       memcpy(drc_name, buf, nbytes);
+       strscpy(drc_name, buf, nbytes + 1);
 
        end = strchr(drc_name, '\n');
-       if (!end)
-               end = &drc_name[nbytes];
-       *end = '\0';
+       if (end)
+               *end = '\0';
 
        rc = dlpar_remove_slot(drc_name);
        if (rc)
diff --git a/drivers/platform/chrome/cros_ec_dev.c 
b/drivers/platform/chrome/cros_ec_dev.c
index 2b331d5b9e79..e16d82bb36a9 100644
--- a/drivers/platform/chrome/cros_ec_dev.c
+++ b/drivers/platform/chrome/cros_ec_dev.c
@@ -137,6 +137,10 @@ static long ec_device_ioctl_xcmd(struct cros_ec_dev *ec, 
void __user *arg)
        if (copy_from_user(&u_cmd, arg, sizeof(u_cmd)))
                return -EFAULT;
 
+       if ((u_cmd.outsize > EC_MAX_MSG_BYTES) ||
+           (u_cmd.insize > EC_MAX_MSG_BYTES))
+               return -EINVAL;
+
        s_cmd = kmalloc(sizeof(*s_cmd) + max(u_cmd.outsize, u_cmd.insize),
                        GFP_KERNEL);
        if (!s_cmd)
diff --git a/drivers/platform/chrome/cros_ec_proto.c 
b/drivers/platform/chrome/cros_ec_proto.c
index 5c285f2b3a65..d20190c8f0c0 100644
--- a/drivers/platform/chrome/cros_ec_proto.c
+++ b/drivers/platform/chrome/cros_ec_proto.c
@@ -311,8 +311,8 @@ int cros_ec_query_all(struct cros_ec_device *ec_dev)
                        ec_dev->max_response = EC_PROTO2_MAX_PARAM_SIZE;
                        ec_dev->max_passthru = 0;
                        ec_dev->pkt_xfer = NULL;
-                       ec_dev->din_size = EC_MSG_BYTES;
-                       ec_dev->dout_size = EC_MSG_BYTES;
+                       ec_dev->din_size = EC_PROTO2_MSG_BYTES;
+                       ec_dev->dout_size = EC_PROTO2_MSG_BYTES;
                } else {
                        /*
                         * It's possible for a test to occur too early when
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index 25aa9b98d53a..034d09f8d341 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -1061,7 +1061,7 @@ lpfc_debugfs_dif_err_write(struct file *file, const char 
__user *buf,
        memset(dstbuf, 0, 32);
        size = (nbytes < 32) ? nbytes : 32;
        if (copy_from_user(dstbuf, buf, size))
-               return 0;
+               return -EFAULT;
 
        if (dent == phba->debug_InjErrLBA) {
                if ((buf[0] == 'o') && (buf[1] == 'f') && (buf[2] == 'f'))
@@ -1069,7 +1069,7 @@ lpfc_debugfs_dif_err_write(struct file *file, const char 
__user *buf,
        }
 
        if ((tmp == 0) && (kstrtoull(dstbuf, 0, &tmp)))
-               return 0;
+               return -EINVAL;
 
        if (dent == phba->debug_writeGuard)
                phba->lpfc_injerr_wgrd_cnt = (uint32_t)tmp;
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 5688df02d9ab..bb72d55a58b5 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -933,7 +933,7 @@ static void collect_langs(struct usb_gadget_strings **sp, 
__le16 *buf)
        while (*sp) {
                s = *sp;
                language = cpu_to_le16(s->language);
-               for (tmp = buf; *tmp && tmp < &buf[126]; tmp++) {
+               for (tmp = buf; *tmp && tmp < &buf[USB_MAX_STRING_LEN]; tmp++) {
                        if (*tmp == language)
                                goto repeat;
                }
@@ -1008,7 +1008,7 @@ static int get_string(struct usb_composite_dev *cdev,
                        collect_langs(sp, s->wData);
                }
 
-               for (len = 0; len <= 126 && s->wData[len]; len++)
+               for (len = 0; len <= USB_MAX_STRING_LEN && s->wData[len]; len++)
                        continue;
                if (!len)
                        return -EINVAL;
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 98f1ce1d61b0..0ef3f4e45242 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -111,21 +111,27 @@ struct gadget_config_name {
        struct list_head list;
 };
 
+#define USB_MAX_STRING_WITH_NULL_LEN   (USB_MAX_STRING_LEN+1)
+
 static int usb_string_copy(const char *s, char **s_copy)
 {
        int ret;
        char *str;
        char *copy = *s_copy;
        ret = strlen(s);
-       if (ret > 126)
+       if (ret > USB_MAX_STRING_LEN)
                return -EOVERFLOW;
 
-       str = kstrdup(s, GFP_KERNEL);
-       if (!str)
-               return -ENOMEM;
+       if (copy) {
+               str = copy;
+       } else {
+               str = kmalloc(USB_MAX_STRING_WITH_NULL_LEN, GFP_KERNEL);
+               if (!str)
+                       return -ENOMEM;
+       }
+       strcpy(str, s);
        if (str[ret - 1] == '\n')
                str[ret - 1] = '\0';
-       kfree(copy);
        *s_copy = str;
        return 0;
 }
diff --git a/drivers/usb/gadget/usbstring.c b/drivers/usb/gadget/usbstring.c
index 73a4dfba0edb..0173a9969b9a 100644
--- a/drivers/usb/gadget/usbstring.c
+++ b/drivers/usb/gadget/usbstring.c
@@ -59,9 +59,9 @@ usb_gadget_get_string (struct usb_gadget_strings *table, int 
id, u8 *buf)
                return -EINVAL;
 
        /* string descriptors have length, tag, then UTF16-LE text */
-       len = min ((size_t) 126, strlen (s->s));
+       len = min((size_t)USB_MAX_STRING_LEN, strlen(s->s));
        len = utf8s_to_utf16s(s->s, len, UTF16_LITTLE_ENDIAN,
-                       (wchar_t *) &buf[2], 126);
+                       (wchar_t *) &buf[2], USB_MAX_STRING_LEN);
        if (len < 0)
                return -EINVAL;
        buf [0] = (len + 1) * 2;
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 85b64475d808..fbb4c81f6311 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1431,7 +1431,9 @@ get_old_root(struct btrfs_root *root, u64 time_seq)
                        btrfs_warn(root->fs_info,
                                "failed to read tree block %llu from 
get_old_root", logical);
                } else {
+                       btrfs_tree_read_lock(old);
                        eb = btrfs_clone_extent_buffer(old);
+                       btrfs_tree_read_unlock(old);
                        free_extent_buffer(old);
                }
        } else if (old_root) {
diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index d5055b3adccc..176a8382e372 100644
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -23,6 +23,7 @@ struct ext4_system_zone {
        struct rb_node  node;
        ext4_fsblk_t    start_blk;
        unsigned int    count;
+       u32             ino;
 };
 
 static struct kmem_cache *ext4_system_zone_cachep;
@@ -43,7 +44,8 @@ void ext4_exit_system_zone(void)
 static inline int can_merge(struct ext4_system_zone *entry1,
                     struct ext4_system_zone *entry2)
 {
-       if ((entry1->start_blk + entry1->count) == entry2->start_blk)
+       if ((entry1->start_blk + entry1->count) == entry2->start_blk &&
+           entry1->ino == entry2->ino)
                return 1;
        return 0;
 }
@@ -55,9 +57,9 @@ static inline int can_merge(struct ext4_system_zone *entry1,
  */
 static int add_system_zone(struct ext4_sb_info *sbi,
                           ext4_fsblk_t start_blk,
-                          unsigned int count)
+                          unsigned int count, u32 ino)
 {
-       struct ext4_system_zone *new_entry = NULL, *entry;
+       struct ext4_system_zone *new_entry, *entry;
        struct rb_node **n = &sbi->system_blks.rb_node, *node;
        struct rb_node *parent = NULL, *new_node = NULL;
 
@@ -68,30 +70,21 @@ static int add_system_zone(struct ext4_sb_info *sbi,
                        n = &(*n)->rb_left;
                else if (start_blk >= (entry->start_blk + entry->count))
                        n = &(*n)->rb_right;
-               else {
-                       if (start_blk + count > (entry->start_blk +
-                                                entry->count))
-                               entry->count = (start_blk + count -
-                                               entry->start_blk);
-                       new_node = *n;
-                       new_entry = rb_entry(new_node, struct ext4_system_zone,
-                                            node);
-                       break;
-               }
+               else    /* Unexpected overlap of system zones. */
+                       return -EFSCORRUPTED;
        }
 
-       if (!new_entry) {
-               new_entry = kmem_cache_alloc(ext4_system_zone_cachep,
-                                            GFP_KERNEL);
-               if (!new_entry)
-                       return -ENOMEM;
-               new_entry->start_blk = start_blk;
-               new_entry->count = count;
-               new_node = &new_entry->node;
+       new_entry = kmem_cache_alloc(ext4_system_zone_cachep,
+                                    GFP_KERNEL);
+       if (!new_entry)
+               return -ENOMEM;
+       new_entry->start_blk = start_blk;
+       new_entry->count = count;
+       new_entry->ino = ino;
+       new_node = &new_entry->node;
 
-               rb_link_node(new_node, parent, n);
-               rb_insert_color(new_node, &sbi->system_blks);
-       }
+       rb_link_node(new_node, parent, n);
+       rb_insert_color(new_node, &sbi->system_blks);
 
        /* Can we merge to the left? */
        node = rb_prev(new_node);
@@ -163,16 +156,16 @@ static int ext4_protect_reserved_inode(struct super_block 
*sb, u32 ino)
                if (n == 0) {
                        i++;
                } else {
-                       if (!ext4_data_block_valid(sbi, map.m_pblk, n)) {
-                               ext4_error(sb, "blocks %llu-%llu from inode %u "
+                       err = add_system_zone(sbi, map.m_pblk, n, ino);
+                       if (err < 0) {
+                               if (err == -EFSCORRUPTED) {
+                                       ext4_error(sb,
+                                          "blocks %llu-%llu from inode %u "
                                           "overlap system zone", map.m_pblk,
                                           map.m_pblk + map.m_len - 1, ino);
-                               err = -EFSCORRUPTED;
+                               }
                                break;
                        }
-                       err = add_system_zone(sbi, map.m_pblk, n);
-                       if (err < 0)
-                               break;
                        i += n;
                }
        }
@@ -201,16 +194,16 @@ int ext4_setup_system_zone(struct super_block *sb)
                if (ext4_bg_has_super(sb, i) &&
                    ((i < 5) || ((i % flex_size) == 0)))
                        add_system_zone(sbi, ext4_group_first_block_no(sb, i),
-                                       ext4_bg_num_gdb(sb, i) + 1);
+                                       ext4_bg_num_gdb(sb, i) + 1, 0);
                gdp = ext4_get_group_desc(sb, i, NULL);
-               ret = add_system_zone(sbi, ext4_block_bitmap(sb, gdp), 1);
+               ret = add_system_zone(sbi, ext4_block_bitmap(sb, gdp), 1, 0);
                if (ret)
                        return ret;
-               ret = add_system_zone(sbi, ext4_inode_bitmap(sb, gdp), 1);
+               ret = add_system_zone(sbi, ext4_inode_bitmap(sb, gdp), 1, 0);
                if (ret)
                        return ret;
                ret = add_system_zone(sbi, ext4_inode_table(sb, gdp),
-                               sbi->s_itb_per_group);
+                               sbi->s_itb_per_group, 0);
                if (ret)
                        return ret;
        }
@@ -243,10 +236,11 @@ void ext4_release_system_zone(struct super_block *sb)
  * start_blk+count) is valid; 0 if some part of the block region
  * overlaps with filesystem metadata blocks.
  */
-int ext4_data_block_valid(struct ext4_sb_info *sbi, ext4_fsblk_t start_blk,
-                         unsigned int count)
+int ext4_inode_block_valid(struct inode *inode, ext4_fsblk_t start_blk,
+                          unsigned int count)
 {
        struct ext4_system_zone *entry;
+       struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
        struct rb_node *n = sbi->system_blks.rb_node;
 
        if ((start_blk <= le32_to_cpu(sbi->s_es->s_first_data_block)) ||
@@ -262,6 +256,8 @@ int ext4_data_block_valid(struct ext4_sb_info *sbi, 
ext4_fsblk_t start_blk,
                else if (start_blk >= (entry->start_blk + entry->count))
                        n = n->rb_right;
                else {
+                       if (entry->ino == inode->i_ino)
+                               return 1;
                        sbi->s_es->s_last_error_block = cpu_to_le64(start_blk);
                        return 0;
                }
@@ -284,8 +280,7 @@ int ext4_check_blockref(const char *function, unsigned int 
line,
        while (bref < p+max) {
                blk = le32_to_cpu(*bref++);
                if (blk &&
-                   unlikely(!ext4_data_block_valid(EXT4_SB(inode->i_sb),
-                                                   blk, 1))) {
+                   unlikely(!ext4_inode_block_valid(inode, blk, 1))) {
                        es->s_last_error_block = cpu_to_le64(blk);
                        ext4_error_inode(inode, function, line, blk,
                                         "invalid block");
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index abffa2488ae9..40e3716b4f2e 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -3134,9 +3134,9 @@ extern void ext4_release_system_zone(struct super_block 
*sb);
 extern int ext4_setup_system_zone(struct super_block *sb);
 extern int __init ext4_init_system_zone(void);
 extern void ext4_exit_system_zone(void);
-extern int ext4_data_block_valid(struct ext4_sb_info *sbi,
-                                ext4_fsblk_t start_blk,
-                                unsigned int count);
+extern int ext4_inode_block_valid(struct inode *inode,
+                                 ext4_fsblk_t start_blk,
+                                 unsigned int count);
 extern int ext4_check_blockref(const char *, unsigned int,
                               struct inode *, __le32 *, unsigned int);
 
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index fc2746e14c42..71005a944151 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -384,7 +384,7 @@ static int ext4_valid_extent(struct inode *inode, struct 
ext4_extent *ext)
         */
        if (lblock + len <= lblock)
                return 0;
-       return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len);
+       return ext4_inode_block_valid(inode, block, len);
 }
 
 static int ext4_valid_extent_idx(struct inode *inode,
@@ -392,7 +392,7 @@ static int ext4_valid_extent_idx(struct inode *inode,
 {
        ext4_fsblk_t block = ext4_idx_pblock(ext_idx);
 
-       return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, 1);
+       return ext4_inode_block_valid(inode, block, 1);
 }
 
 static int ext4_valid_extent_entries(struct inode *inode,
@@ -549,14 +549,10 @@ __read_extent_tree_block(const char *function, unsigned 
int line,
        }
        if (buffer_verified(bh) && !(flags & EXT4_EX_FORCE_CACHE))
                return bh;
-       if (!ext4_has_feature_journal(inode->i_sb) ||
-           (inode->i_ino !=
-            le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_journal_inum))) {
-               err = __ext4_ext_check(function, line, inode,
-                                      ext_block_hdr(bh), depth, pblk);
-               if (err)
-                       goto errout;
-       }
+       err = __ext4_ext_check(function, line, inode,
+                              ext_block_hdr(bh), depth, pblk);
+       if (err)
+               goto errout;
        set_buffer_verified(bh);
        /*
         * If this is a leaf block, cache all of its entries
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 08f3a0c0f468..4f610cd8041b 100644
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -946,8 +946,7 @@ static int ext4_clear_blocks(handle_t *handle, struct inode 
*inode,
        else if (ext4_should_journal_data(inode))
                flags |= EXT4_FREE_BLOCKS_FORGET;
 
-       if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), block_to_free,
-                                  count)) {
+       if (!ext4_inode_block_valid(inode, block_to_free, count)) {
                EXT4_ERROR_INODE(inode, "attempt to clear invalid "
                                 "blocks %llu len %lu",
                                 (unsigned long long) block_to_free, count);
@@ -1109,8 +1108,7 @@ static void ext4_free_branches(handle_t *handle, struct 
inode *inode,
                        if (!nr)
                                continue;               /* A hole */
 
-                       if (!ext4_data_block_valid(EXT4_SB(inode->i_sb),
-                                                  nr, 1)) {
+                       if (!ext4_inode_block_valid(inode, nr, 1)) {
                                EXT4_ERROR_INODE(inode,
                                                 "invalid indirect mapped "
                                                 "block %lu (level %d)",
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 881601691bd4..4c32a484f8bc 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -381,8 +381,7 @@ static int __check_block_validity(struct inode *inode, 
const char *func,
            (inode->i_ino ==
             le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_journal_inum)))
                return 0;
-       if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), map->m_pblk,
-                                  map->m_len)) {
+       if (!ext4_inode_block_valid(inode, map->m_pblk, map->m_len)) {
                ext4_error_inode(inode, func, line, map->m_pblk,
                                 "lblock %lu mapped to illegal pblock %llu "
                                 "(length %d)", (unsigned long) map->m_lblk,
@@ -4437,7 +4436,7 @@ struct inode *__ext4_iget(struct super_block *sb, 
unsigned long ino,
 
        ret = 0;
        if (ei->i_file_acl &&
-           !ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) {
+           !ext4_inode_block_valid(inode, ei->i_file_acl, 1)) {
                ext4_error_inode(inode, function, line, 0,
                                 "iget: bad extended attribute block %llu",
                                 ei->i_file_acl);
@@ -4627,7 +4626,7 @@ static int ext4_do_update_inode(handle_t *handle,
        struct ext4_inode_info *ei = EXT4_I(inode);
        struct buffer_head *bh = iloc->bh;
        struct super_block *sb = inode->i_sb;
-       int err = 0, rc, block;
+       int err = 0, block;
        int need_datasync = 0, set_large_file = 0;
        uid_t i_uid;
        gid_t i_gid;
@@ -4727,9 +4726,9 @@ static int ext4_do_update_inode(handle_t *handle,
                                              bh->b_data);
 
        BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
-       rc = ext4_handle_dirty_metadata(handle, NULL, bh);
-       if (!err)
-               err = rc;
+       err = ext4_handle_dirty_metadata(handle, NULL, bh);
+       if (err)
+               goto out_brelse;
        ext4_clear_inode_state(inode, EXT4_STATE_NEW);
        if (set_large_file) {
                BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get write access");
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 812e0ba25a08..ac87f7e5d6a4 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2960,7 +2960,7 @@ ext4_mb_mark_diskspace_used(struct 
ext4_allocation_context *ac,
        block = ext4_grp_offs_to_block(sb, &ac->ac_b_ex);
 
        len = EXT4_C2B(sbi, ac->ac_b_ex.fe_len);
-       if (!ext4_data_block_valid(sbi, block, len)) {
+       if (!ext4_inode_block_valid(ac->ac_inode, block, len)) {
                ext4_error(sb, "Allocating blocks %llu-%llu which overlap "
                           "fs metadata", block, block+len);
                /* File system mounted not to panic on error
@@ -4718,7 +4718,7 @@ void ext4_free_blocks(handle_t *handle, struct inode 
*inode,
 
        sbi = EXT4_SB(sb);
        if (!(flags & EXT4_FREE_BLOCKS_VALIDATED) &&
-           !ext4_data_block_valid(sbi, block, count)) {
+           !ext4_inode_block_valid(inode, block, count)) {
                ext4_error(sb, "Freeing blocks not in datazone - "
                           "block = %llu, count = %lu", block, count);
                goto error_return;
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index d5b3216585cf..6168bcdadeba 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -3375,6 +3375,31 @@ static int ext4_setent(handle_t *handle, struct 
ext4_renament *ent,
        return 0;
 }
 
+static void ext4_resetent(handle_t *handle, struct ext4_renament *ent,
+                         unsigned ino, unsigned file_type)
+{
+       struct ext4_renament old = *ent;
+       int retval = 0;
+
+       /*
+        * old->de could have moved from under us during make indexed dir,
+        * so the old->de may no longer valid and need to find it again
+        * before reset old inode info.
+        */
+       old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL);
+       if (IS_ERR(old.bh))
+               retval = PTR_ERR(old.bh);
+       if (!old.bh)
+               retval = -ENOENT;
+       if (retval) {
+               ext4_std_error(old.dir->i_sb, retval);
+               return;
+       }
+
+       ext4_setent(handle, &old, ino, file_type);
+       brelse(old.bh);
+}
+
 static int ext4_find_delete_entry(handle_t *handle, struct inode *dir,
                                  const struct qstr *d_name)
 {
@@ -3674,8 +3699,8 @@ static int ext4_rename(struct inode *old_dir, struct 
dentry *old_dentry,
 end_rename:
        if (whiteout) {
                if (retval) {
-                       ext4_setent(handle, &old,
-                               old.inode->i_ino, old_file_type);
+                       ext4_resetent(handle, &old,
+                                     old.inode->i_ino, old_file_type);
                        drop_nlink(whiteout);
                }
                unlock_new_inode(whiteout);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 7a5a1602ee01..d4ecae25d807 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4968,7 +4968,10 @@ static int ext4_remount(struct super_block *sb, int 
*flags, char *data)
                ext4_register_li_request(sb, first_not_zeroed);
        }
 
-       ext4_setup_system_zone(sb);
+       err = ext4_setup_system_zone(sb);
+       if (err)
+               goto restore_opts;
+
        if (sbi->s_journal == NULL && !(old_sb_flags & MS_RDONLY))
                ext4_commit_super(sb, 1);
 
diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h
index 3ab3cede28ea..93c14e9df630 100644
--- a/include/linux/mfd/cros_ec.h
+++ b/include/linux/mfd/cros_ec.h
@@ -50,9 +50,11 @@ enum {
                                        EC_MSG_TX_TRAILER_BYTES,
        EC_MSG_RX_PROTO_BYTES   = 3,
 
-       /* Max length of messages */
-       EC_MSG_BYTES            = EC_PROTO2_MAX_PARAM_SIZE +
+       /* Max length of messages for proto 2*/
+       EC_PROTO2_MSG_BYTES             = EC_PROTO2_MAX_PARAM_SIZE +
                                        EC_MSG_TX_PROTO_BYTES,
+
+       EC_MAX_MSG_BYTES                = 64 * 1024,
 };
 
 /*
diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index ec6c8543732f..9ca4b43122d7 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -333,6 +333,9 @@ struct usb_config_descriptor {
 
 /*-------------------------------------------------------------------------*/
 
+/* USB String descriptors can contain at most 126 characters. */
+#define USB_MAX_STRING_LEN     126
+
 /* USB_DT_STRING: String descriptor */
 struct usb_string_descriptor {
        __u8  bLength;
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 14aaaa61e905..f5bb63cbb6b4 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -872,11 +872,15 @@ irq_forced_thread_fn(struct irq_desc *desc, struct 
irqaction *action)
        irqreturn_t ret;
 
        local_bh_disable();
+       if (!IS_ENABLED(CONFIG_PREEMPT_RT_BASE))
+               local_irq_disable();
        ret = action->thread_fn(action->irq, action->dev_id);
        if (ret == IRQ_HANDLED)
                atomic_inc(&desc->threads_handled);
 
        irq_finalize_oneshot(desc, action);
+       if (!IS_ENABLED(CONFIG_PREEMPT_RT_BASE))
+               local_irq_enable();
        local_bh_enable();
        return ret;
 }
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index a7cd03165680..7629982040c4 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -1011,7 +1011,7 @@ static int svc_close_list(struct svc_serv *serv, struct 
list_head *xprt_list, st
        struct svc_xprt *xprt;
        int ret = 0;
 
-       spin_lock(&serv->sv_lock);
+       spin_lock_bh(&serv->sv_lock);
        list_for_each_entry(xprt, xprt_list, xpt_list) {
                if (xprt->xpt_net != net)
                        continue;
@@ -1019,7 +1019,7 @@ static int svc_close_list(struct svc_serv *serv, struct 
list_head *xprt_list, st
                set_bit(XPT_CLOSE, &xprt->xpt_flags);
                svc_xprt_enqueue(xprt);
        }
-       spin_unlock(&serv->sv_lock);
+       spin_unlock_bh(&serv->sv_lock);
        return ret;
 }
 
  • Linux 4.4.263 Greg Kroah-Hartman
    • Re: Linux 4.4.263 Greg Kroah-Hartman

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