diff options
| author | Marcin Slusarz <marcin.slusarz@gmail.com> | 2008-06-10 21:37:02 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-06-16 13:20:04 -0700 |
| commit | 9b69cb3f98440c69faa39580f30afa77f94b7b08 (patch) | |
| tree | 706f3f31e09c517bbc9f79e09b90c8dcd9a6e377 | |
| parent | c547cbac3ae2fe6689e764ba45f99b5733e506a9 (diff) | |
cifs: fix oops on mount when CONFIG_CIFS_DFS_UPCALL is enabled
simple "mount -t cifs //xxx /mnt" oopsed on strlen of options
http://kerneloops.org/guilty.php?guilty=cifs_get_sb&version=2.6.25-release&start=16711 \
68&end=1703935&class=oops
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/cifs/cifsfs.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index a04b17e5a9d..b94fb5cd1b0 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -97,9 +97,6 @@ cifs_read_super(struct super_block *sb, void *data, { struct inode *inode; struct cifs_sb_info *cifs_sb; -#ifdef CONFIG_CIFS_DFS_UPCALL - int len; -#endif int rc = 0; /* BB should we make this contingent on mount parm? */ @@ -117,15 +114,17 @@ cifs_read_super(struct super_block *sb, void *data, * complex operation (mount), and in case of fail * just exit instead of doing mount and attempting * undo it if this copy fails?*/ - len = strlen(data); - cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL); - if (cifs_sb->mountdata == NULL) { - kfree(sb->s_fs_info); - sb->s_fs_info = NULL; - return -ENOMEM; + if (data) { + int len = strlen(data); + cifs_sb->mountdata = kzalloc(len + 1, GFP_KERNEL); + if (cifs_sb->mountdata == NULL) { + kfree(sb->s_fs_info); + sb->s_fs_info = NULL; + return -ENOMEM; + } + strncpy(cifs_sb->mountdata, data, len + 1); + cifs_sb->mountdata[len] = '\0'; } - strncpy(cifs_sb->mountdata, data, len + 1); - cifs_sb->mountdata[len] = '\0'; #endif rc = cifs_mount(sb, cifs_sb, data, devname); |