Stanse found that pSMBFile in cifs_ioctl and file->f_path.dentry in cifs_user_write are dereferenced prior their test to NULL.
The alternative is not to dereference them before the tests. The patch is to point out the problem, you have to decide. Signed-off-by: Jiri Slaby <[email protected]> Cc: Steve French <[email protected]> Cc: [email protected] --- fs/cifs/file.c | 2 +- fs/cifs/ioctl.c | 4 ---- 2 files changed, 1 insertions(+), 5 deletions(-) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 45af003..db7eaf7 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1031,7 +1031,7 @@ ssize_t cifs_user_write(struct file *file, const char __user *write_data, cifs_stats_bytes_written(pTcon, total_written); /* since the write may have blocked check these pointers again */ - if ((file->f_path.dentry) && (file->f_path.dentry->d_inode)) { + if (file->f_path.dentry->d_inode) { struct inode *inode = file->f_path.dentry->d_inode; /* Do not update local mtime - server will set its actual value on write * inode->i_ctime = inode->i_mtime = diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c index 077bf75..2fa22f2 100644 --- a/fs/cifs/ioctl.c +++ b/fs/cifs/ioctl.c @@ -63,8 +63,6 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) #ifdef CONFIG_CIFS_POSIX case FS_IOC_GETFLAGS: if (CIFS_UNIX_EXTATTR_CAP & caps) { - if (pSMBFile == NULL) - break; rc = CIFSGetExtAttr(xid, tcon, pSMBFile->netfid, &ExtAttrBits, &ExtAttrMask); if (rc == 0) @@ -80,8 +78,6 @@ long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg) rc = -EFAULT; break; } - if (pSMBFile == NULL) - break; /* rc= CIFSGetExtAttr(xid,tcon,pSMBFile->netfid, extAttrBits, &ExtAttrMask);*/ } -- 1.7.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
