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-rw-r--r--fs/cifs/CHANGES3
-rw-r--r--fs/cifs/cifsfs.h2
-rw-r--r--fs/cifs/file.c2
-rw-r--r--fs/cifs/inode.c34
4 files changed, 22 insertions, 19 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 95483baab706..dab4774ee7bb 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -6,7 +6,8 @@ kills the cifsd thread (NB: killing the cifs kernel threads is not
recommended, unmount and rmmod cifs will kill them when they are
no longer needed). Fix readdir to ASCII servers (ie older servers
which do not support Unicode) and also require asterik.
-
+Fix out of memory case in which data could be written one page
+off in the page cache.
Version 1.33
------------
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index d00b3bfe1a52..78af5850c558 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -96,5 +96,5 @@ extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t);
extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);
extern int cifs_ioctl (struct inode * inode, struct file * filep,
unsigned int command, unsigned long arg);
-#define CIFS_VERSION "1.34"
+#define CIFS_VERSION "1.35"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index dde2d251fc3d..30ab70ce5547 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1352,6 +1352,8 @@ static void cifs_copy_cache_pages(struct address_space *mapping,
GFP_KERNEL)) {
page_cache_release(page);
cFYI(1, ("Add page cache failed"));
+ data += PAGE_CACHE_SIZE;
+ bytes_read -= PAGE_CACHE_SIZE;
continue;
}
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index b8b78cbb34c9..8d336a900255 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -82,12 +82,12 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* get new inode */
if (*pinode == NULL) {
*pinode = new_inode(sb);
- if(*pinode == NULL)
+ if (*pinode == NULL)
return -ENOMEM;
/* Is an i_ino of zero legal? */
/* Are there sanity checks we can use to ensure that
the server is really filling in that field? */
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
(*pinode)->i_ino =
(unsigned long)findData.UniqueId;
} /* note ino incremented to unique num in new_inode */
@@ -134,7 +134,7 @@ int cifs_get_inode_info_unix(struct inode **pinode,
inode->i_gid = le64_to_cpu(findData.Gid);
inode->i_nlink = le64_to_cpu(findData.Nlinks);
- if(is_size_safe_to_change(cifsInfo)) {
+ if (is_size_safe_to_change(cifsInfo)) {
/* can not safely change the file size here if the
client is writing to it due to potential races */
@@ -162,7 +162,7 @@ int cifs_get_inode_info_unix(struct inode **pinode,
if (S_ISREG(inode->i_mode)) {
cFYI(1, (" File inode "));
inode->i_op = &cifs_file_inode_ops;
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
inode->i_fop = &cifs_file_direct_ops;
else
inode->i_fop = &cifs_file_ops;
@@ -198,17 +198,17 @@ int cifs_get_inode_info(struct inode **pinode,
pTcon = cifs_sb->tcon;
cFYI(1,("Getting info on %s ", search_path));
- if((pfindData == NULL) && (*pinode != NULL)) {
- if(CIFS_I(*pinode)->clientCanCacheRead) {
+ if ((pfindData == NULL) && (*pinode != NULL)) {
+ if (CIFS_I(*pinode)->clientCanCacheRead) {
cFYI(1,("No need to revalidate cached inode sizes"));
return rc;
}
}
/* if file info not passed in then get it from server */
- if(pfindData == NULL) {
+ if (pfindData == NULL) {
buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
- if(buf == NULL)
+ if (buf == NULL)
return -ENOMEM;
pfindData = (FILE_ALL_INFO *)buf;
/* could do find first instead but this returns more info */
@@ -268,7 +268,7 @@ int cifs_get_inode_info(struct inode **pinode,
IndexNumber field is not guaranteed unique? */
#ifdef CONFIG_CIFS_EXPERIMENTAL
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){
int rc1 = 0;
__u64 inode_num;
@@ -277,7 +277,7 @@ int cifs_get_inode_info(struct inode **pinode,
cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
- if(rc1) {
+ if (rc1) {
cFYI(1,("GetSrvInodeNum rc %d", rc1));
/* BB EOPNOSUPP disable SERVER_INUM? */
} else /* do we need cast or hash to ino? */
@@ -355,7 +355,7 @@ int cifs_get_inode_info(struct inode **pinode,
if (S_ISREG(inode->i_mode)) {
cFYI(1, (" File inode "));
inode->i_op = &cifs_file_inode_ops;
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO)
inode->i_fop = &cifs_file_direct_ops;
else
inode->i_fop = &cifs_file_ops;
@@ -422,7 +422,7 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
if (!rc) {
- if(direntry->d_inode)
+ if (direntry->d_inode)
direntry->d_inode->i_nlink--;
} else if (rc == -ENOENT) {
d_drop(direntry);
@@ -441,7 +441,7 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
CIFSSMBClose(xid, pTcon, netfid);
- if(direntry->d_inode)
+ if (direntry->d_inode)
direntry->d_inode->i_nlink--;
}
} else if (rc == -EACCES) {
@@ -496,7 +496,7 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
if (!rc) {
- if(direntry->d_inode)
+ if (direntry->d_inode)
direntry->d_inode->i_nlink--;
} else if (rc == -ETXTBSY) {
int oplock = FALSE;
@@ -517,14 +517,14 @@ int cifs_unlink(struct inode *inode, struct dentry *direntry)
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
CIFSSMBClose(xid, pTcon, netfid);
- if(direntry->d_inode)
+ if (direntry->d_inode)
direntry->d_inode->i_nlink--;
}
/* BB if rc = -ETXTBUSY goto the rename logic BB */
}
}
}
- if(direntry->d_inode) {
+ if (direntry->d_inode) {
cifsInode = CIFS_I(direntry->d_inode);
cifsInode->time = 0; /* will force revalidate to get info
when needed */
@@ -582,7 +582,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
if (direntry->d_inode)
direntry->d_inode->i_nlink = 2;
if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
- if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
CIFSSMBUnixSetPerms(xid, pTcon, full_path,
mode,
(__u64)current->euid,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.