Merge branch 'to-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland

* 'to-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/frob/linux-2.6-roland:
  tracehook: exec double-reporting fix

1 files changed, 9 insertions, 1 deletions

diff --git a/fs/exec.c b/fs/exec.c
index 4e834f16d9d..ec5df9a3831 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1159,6 +1159,7 @@ EXPORT_SYMBOL(remove_arg_zero);
  */
 int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
 {
+        unsigned int depth = bprm->recursion_depth;
         int try,retval;
         struct linux_binfmt *fmt;
 #ifdef __alpha__
@@ -1219,8 +1220,15 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
                                 continue;
                         read_unlock(&binfmt_lock);
                         retval = fn(bprm, regs);
+                        /*
+                         * Restore the depth counter to its starting value
+                         * in this call, so we don't have to rely on every
+                         * load_binary function to restore it on return.
+                         */
+                        bprm->recursion_depth = depth;
                         if (retval >= 0) {
-                                tracehook_report_exec(fmt, bprm, regs);
+                                if (depth == 0)
+                                        tracehook_report_exec(fmt, bprm, regs);
                                 put_binfmt(fmt);
                                 allow_write_access(bprm->file);
                                 if (bprm->file)