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

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

diff --git a/fs/exec.c b/fs/exec.c
index 4e834f16d9da7d49c0f232b9fd46a7db2c680070..ec5df9a38313397565e44173cc434e09f6fc6ec4 100644 (file)
--- 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)