1 files changed, 20 insertions, 28 deletions

diff --git a/fs/compat.c b/fs/compat.c
index 3f84d5f1588..681ed81e6be 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -181,22 +181,24 @@ asmlinkage long compat_sys_newstat(char __user * filename,
                 struct compat_stat __user *statbuf)
 {
         struct kstat stat;
-        int error = vfs_stat_fd(AT_FDCWD, filename, &stat);
+        int error;
 
-        if (!error)
-                error = cp_compat_stat(&stat, statbuf);
-        return error;
+        error = vfs_stat(filename, &stat);
+        if (error)
+                return error;
+        return cp_compat_stat(&stat, statbuf);
 }
 
 asmlinkage long compat_sys_newlstat(char __user * filename,
                 struct compat_stat __user *statbuf)
 {
         struct kstat stat;
-        int error = vfs_lstat_fd(AT_FDCWD, filename, &stat);
+        int error;
 
-        if (!error)
-                error = cp_compat_stat(&stat, statbuf);
-        return error;
+        error = vfs_lstat(filename, &stat);
+        if (error)
+                return error;
+        return cp_compat_stat(&stat, statbuf);
 }
 
 #ifndef __ARCH_WANT_STAT64
@@ -204,21 +206,12 @@ asmlinkage long compat_sys_newfstatat(unsigned int dfd, char __user *filename,
                 struct compat_stat __user *statbuf, int flag)
 {
         struct kstat stat;
-        int error = -EINVAL;
-
-        if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
-                goto out;
-
-        if (flag & AT_SYMLINK_NOFOLLOW)
-                error = vfs_lstat_fd(dfd, filename, &stat);
-        else
-                error = vfs_stat_fd(dfd, filename, &stat);
-
-        if (!error)
-                error = cp_compat_stat(&stat, statbuf);
+        int error;
 
-out:
-        return error;
+        error = vfs_fstatat(dfd, filename, &stat, flag);
+        if (error)
+                return error;
+        return cp_compat_stat(&stat, statbuf);
 }
 #endif
 
@@ -1483,6 +1476,7 @@ int compat_do_execve(char * filename,
         struct linux_binprm *bprm;
         struct file *file;
         struct files_struct *displaced;
+        bool clear_in_exec;
         int retval;
 
         retval = unshare_files(&displaced);
@@ -1505,8 +1499,9 @@ int compat_do_execve(char * filename,
                 goto out_unlock;
 
         retval = check_unsafe_exec(bprm);
-        if (retval)
+        if (retval < 0)
                 goto out_unlock;
+        clear_in_exec = retval;
 
         file = open_exec(filename);
         retval = PTR_ERR(file);
@@ -1553,9 +1548,7 @@ int compat_do_execve(char * filename,
                 goto out;
 
         /* execve succeeded */
-        write_lock(&current->fs->lock);
         current->fs->in_exec = 0;
-        write_unlock(&current->fs->lock);
         current->in_execve = 0;
         mutex_unlock(&current->cred_exec_mutex);
         acct_update_integrals(current);
@@ -1575,9 +1568,8 @@ out_file:
         }
 
 out_unmark:
-        write_lock(&current->fs->lock);
-        current->fs->in_exec = 0;
-        write_unlock(&current->fs->lock);
+        if (clear_in_exec)
+                current->fs->in_exec = 0;
 
 out_unlock:
         current->in_execve = 0;