sh: Fix access to released memory in dwarf_unwinder_cleanup()

Signed-off-by: Marek Skuczynski <mareksk7@gmail.com>
Acked-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index 3576b709f052..88d28ec3780a 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -892,18 +892,18 @@ static struct unwinder dwarf_unwinder = {
 
 static void dwarf_unwinder_cleanup(void)
 {
-        struct dwarf_cie *cie;
-        struct dwarf_fde *fde;
+        struct dwarf_cie *cie, *cie_tmp;
+        struct dwarf_fde *fde, *fde_tmp;
 
         /*
          * Deallocate all the memory allocated for the DWARF unwinder.
          * Traverse all the FDE/CIE lists and remove and free all the
          * memory associated with those data structures.
          */
-        list_for_each_entry(cie, &dwarf_cie_list, link)
+        list_for_each_entry_safe(cie, cie_tmp, &dwarf_cie_list, link)
                 kfree(cie);
 
-        list_for_each_entry(fde, &dwarf_fde_list, link)
+        list_for_each_entry_safe(fde, fde_tmp, &dwarf_fde_list, link)
                 kfree(fde);
 
         kmem_cache_destroy(dwarf_reg_cachep);