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Fix a nasty hard to spot bug found by Ralph Siemsen <ralphs@netwinder.org>.

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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.
This commit is contained in:
Eric Andersen 2001-06-28 21:36:06 +00:00
parent 029b4a0422
commit 66ca9480c8
2 changed files with 18 additions and 8 deletions
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13
insmod.c
View File

@ -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;

13
modutils/insmod.c
View File

@ -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;