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authorGravatar Eric Andersen <andersen@codepoet.org>2001-06-28 21:36:06 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2001-06-28 21:36:06 +0000
commit66ca9480c8878285af3c1fceb526d592d1390579 (patch)
tree2b640e10145f4279c333cf8feff48c3a293015b0 /modutils
parent029b4a04221794101812407f5c60155bdfdd1481 (diff)
downloadbusybox-66ca9480c8878285af3c1fceb526d592d1390579.tar.gz
busybox-66ca9480c8878285af3c1fceb526d592d1390579.tar.bz2
Fix a nasty hard to spot bug found by Ralph Siemsen <ralphs@netwinder.org>.
This would cause it to obliterates the end of the strtab section, so symbol lookups would fail and then it would crash. Ugh. This should fix things for people having trouble with insmod.
Diffstat (limited to 'modutils')
-rw-r--r--modutils/insmod.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/modutils/insmod.c b/modutils/insmod.c
index 71f76c750..4b0051594 100644
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -130,7 +130,7 @@
#ifndef MODUTILS_MODULE_H
static const int MODUTILS_MODULE_H = 1;
-#ident "$Id: insmod.c,v 1.66 2001/06/19 15:00:52 andersen Exp $"
+#ident "$Id: insmod.c,v 1.67 2001/06/28 21:36:06 andersen Exp $"
/* This file contains the structures used by the 2.0 and 2.1 kernels.
We do not use the kernel headers directly because we do not wish
@@ -347,7 +347,7 @@ int delete_module(const char *);
#ifndef MODUTILS_OBJ_H
static const int MODUTILS_OBJ_H = 1;
-#ident "$Id: insmod.c,v 1.66 2001/06/19 15:00:52 andersen Exp $"
+#ident "$Id: insmod.c,v 1.67 2001/06/28 21:36:06 andersen Exp $"
/* The relocatable object is manipulated using elfin types. */
@@ -1460,8 +1460,13 @@ struct obj_symbol *obj_add_symbol(struct obj_file *f, const char *name,
f->symtab[hash] = sym;
sym->ksymidx = -1;
- if (ELFW(ST_BIND) (info) == STB_LOCAL)
- f->local_symtab[symidx] = sym;
+ if (ELFW(ST_BIND)(info) == STB_LOCAL && symidx != -1) {
+ if (symidx >= f->local_symtab_size)
+ error_msg("local symbol %s with index %ld exceeds local_symtab_size %ld",
+ name, (long) symidx, (long) f->local_symtab_size);
+ else
+ f->local_symtab[symidx] = sym;
+ }
found:
sym->name = name;