[PARISC] fix null ptr deref in unwind.c
commit ffb45122766db220d0bf3d01848d575fbbcb6430 removed one too many args.
kallsyms_lookup is not safe to call with a NULL *modname. Paper bag over the
problem for the time being.
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c
index 89c0370..e70f57e 100644
--- a/arch/parisc/kernel/unwind.c
+++ b/arch/parisc/kernel/unwind.c
@@ -216,8 +216,10 @@
/* Handle some frequent special cases.... */
{
char symname[KSYM_NAME_LEN+1];
+ char *modname;
- kallsyms_lookup(info->ip, NULL, NULL, NULL, symname);
+ kallsyms_lookup(info->ip, NULL, NULL, &modname,
+ symname);
dbg("info->ip = 0x%lx, name = %s\n", info->ip, symname);