Check return status of memory alloc functions
This fixes a number of places that call a memory allocation function without checking for a NULL return before using. * mach-o.c (bfd_mach_o_flatten_sections): Return a bfd_boolean, FALSE if memory alloc fails. Adjust calls. * som.c (som_prep_for_fixups): Likewise. * vms-alpha.c (alpha_vms_add_fixup_lp, alpha_vms_add_fixup_ca), (alpha_vms_add_fixup_qr, alpha_vms_add_fixup_lr), (alpha_vms_add_lw_reloc, alpha_vms_add_qw_reloc): Likewise. * som.c (som_build_and_write_symbol_table): Return via error_return on seek failure. * vms-alpha.c (VEC_APPEND): Adjust for vector_grow1 changes. (VEC_APPEND_EL): Delete. (vector_grow1): Return pointer to element. Catch overflow. Return NULL on memory allocation failure. (alpha_vms_add_fixup_lp): Replace VEC_APPEND_EL with VEC_APPEND. (alpha_vms_add_fixup_ca): Likewise. (alpha_vms_link_add_object_symbols): Check VEC_APPEND result before using. * elf.c (bfd_section_from_shdr): Check bfd_zalloc2 result.
This commit is contained in:
Alan Modra
parent
986f078366
commit
96d3b80f54
|
|
@ -1,3 +1,23 @@
|
|||
2020-02-19 Alan Modra <amodra@gmail.com>
|
||||
|
||||
* mach-o.c (bfd_mach_o_flatten_sections): Return a bfd_boolean,
|
||||
FALSE if memory alloc fails. Adjust calls.
|
||||
* som.c (som_prep_for_fixups): Likewise.
|
||||
* vms-alpha.c (alpha_vms_add_fixup_lp, alpha_vms_add_fixup_ca),
|
||||
(alpha_vms_add_fixup_qr, alpha_vms_add_fixup_lr),
|
||||
(alpha_vms_add_lw_reloc, alpha_vms_add_qw_reloc): Likewise.
|
||||
* som.c (som_build_and_write_symbol_table): Return via error_return
|
||||
on seek failure.
|
||||
* vms-alpha.c (VEC_APPEND): Adjust for vector_grow1 changes.
|
||||
(VEC_APPEND_EL): Delete.
|
||||
(vector_grow1): Return pointer to element. Catch overflow.
|
||||
Return NULL on memory allocation failure.
|
||||
(alpha_vms_add_fixup_lp): Replace VEC_APPEND_EL with VEC_APPEND.
|
||||
(alpha_vms_add_fixup_ca): Likewise.
|
||||
(alpha_vms_link_add_object_symbols): Check VEC_APPEND result
|
||||
before using.
|
||||
* elf.c (bfd_section_from_shdr): Check bfd_zalloc2 result.
|
||||
|
||||
2020-02-19 Alan Modra <amodra@gmail.com>
|
||||
|
||||
* aix386-core.c (aix386_core_file_p): Use size_t for "amt".
|
||||
|
|
|
|||
|
|
@ -2071,6 +2071,8 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
|
|||
{
|
||||
sections_being_created = (bfd_boolean *)
|
||||
bfd_zalloc2 (abfd, elf_numsections (abfd), sizeof (bfd_boolean));
|
||||
if (sections_being_created == NULL)
|
||||
return FALSE;
|
||||
sections_being_created_abfd = abfd;
|
||||
}
|
||||
if (sections_being_created [shindex])
|
||||
|
|
|
|||
|
|
@ -4999,7 +4999,7 @@ bfd_mach_o_read_command (bfd *abfd, bfd_mach_o_load_command *command)
|
|||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
bfd_mach_o_flatten_sections (bfd *abfd)
|
||||
{
|
||||
bfd_mach_o_data_struct *mdata = bfd_mach_o_get_data (abfd);
|
||||
|
|
@ -5023,6 +5023,8 @@ bfd_mach_o_flatten_sections (bfd *abfd)
|
|||
/* Allocate sections array. */
|
||||
mdata->sections = bfd_alloc2 (abfd,
|
||||
mdata->nsects, sizeof (bfd_mach_o_section *));
|
||||
if (mdata->sections == NULL && mdata->nsects != 0)
|
||||
return FALSE;
|
||||
|
||||
/* Fill the array. */
|
||||
csect = 0;
|
||||
|
|
@ -5041,6 +5043,7 @@ bfd_mach_o_flatten_sections (bfd *abfd)
|
|||
mdata->sections[csect++] = sec;
|
||||
}
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static bfd_boolean
|
||||
|
|
@ -5220,7 +5223,8 @@ bfd_mach_o_scan (bfd *abfd,
|
|||
}
|
||||
|
||||
/* Sections should be flatten before scanning start address. */
|
||||
bfd_mach_o_flatten_sections (abfd);
|
||||
if (!bfd_mach_o_flatten_sections (abfd))
|
||||
return FALSE;
|
||||
if (!bfd_mach_o_scan_start_address (abfd))
|
||||
return FALSE;
|
||||
|
||||
|
|
|
|||
14
bfd/som.c
14
bfd/som.c
|
|
@ -2798,7 +2798,7 @@ compare_subspaces (const void *arg1, const void *arg2)
|
|||
|
||||
/* Perform various work in preparation for emitting the fixup stream. */
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms)
|
||||
{
|
||||
unsigned long i;
|
||||
|
|
@ -2876,6 +2876,8 @@ som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms)
|
|||
/* Sort a copy of the symbol table, rather than the canonical
|
||||
output symbol table. */
|
||||
sorted_syms = bfd_zalloc2 (abfd, num_syms, sizeof (asymbol *));
|
||||
if (sorted_syms == NULL)
|
||||
return FALSE;
|
||||
memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *));
|
||||
qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms);
|
||||
obj_som_sorted_syms (abfd) = sorted_syms;
|
||||
|
|
@ -2891,6 +2893,7 @@ som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms)
|
|||
else
|
||||
som_symbol_data (sorted_syms[i])->index = i;
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static bfd_boolean
|
||||
|
|
@ -4009,9 +4012,10 @@ som_finish_writing (bfd *abfd)
|
|||
current_offset += strings_size;
|
||||
|
||||
/* Do prep work before handling fixups. */
|
||||
som_prep_for_fixups (abfd,
|
||||
bfd_get_outsymbols (abfd),
|
||||
bfd_get_symcount (abfd));
|
||||
if (!som_prep_for_fixups (abfd,
|
||||
bfd_get_outsymbols (abfd),
|
||||
bfd_get_symcount (abfd)))
|
||||
return FALSE;
|
||||
|
||||
/* At the end of the file is the fixup stream which starts on a
|
||||
word boundary. */
|
||||
|
|
@ -4500,7 +4504,7 @@ som_build_and_write_symbol_table (bfd *abfd)
|
|||
/* Everything is ready, seek to the right location and
|
||||
scribble out the symbol table. */
|
||||
if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0)
|
||||
return FALSE;
|
||||
goto error_return;
|
||||
|
||||
symtab_size = num_syms;
|
||||
symtab_size *= sizeof (struct som_external_symbol_dictionary_record);
|
||||
|
|
|
|||
122
bfd/vms-alpha.c
122
bfd/vms-alpha.c
|
|
@ -368,14 +368,16 @@ struct vms_private_data_struct *bfd_vms_get_data (bfd *);
|
|||
|
||||
static int vms_get_remaining_object_record (bfd *, unsigned int);
|
||||
static bfd_boolean _bfd_vms_slurp_object_records (bfd * abfd);
|
||||
static void alpha_vms_add_fixup_lp (struct bfd_link_info *, bfd *, bfd *);
|
||||
static void alpha_vms_add_fixup_ca (struct bfd_link_info *, bfd *, bfd *);
|
||||
static void alpha_vms_add_fixup_qr (struct bfd_link_info *, bfd *, bfd *,
|
||||
bfd_vma);
|
||||
static void alpha_vms_add_fixup_lr (struct bfd_link_info *, unsigned int,
|
||||
bfd_vma);
|
||||
static void alpha_vms_add_lw_reloc (struct bfd_link_info *);
|
||||
static void alpha_vms_add_qw_reloc (struct bfd_link_info *);
|
||||
static bfd_boolean alpha_vms_add_fixup_lp (struct bfd_link_info *,
|
||||
bfd *, bfd *);
|
||||
static bfd_boolean alpha_vms_add_fixup_ca (struct bfd_link_info *,
|
||||
bfd *, bfd *);
|
||||
static bfd_boolean alpha_vms_add_fixup_qr (struct bfd_link_info *,
|
||||
bfd *, bfd *, bfd_vma);
|
||||
static bfd_boolean alpha_vms_add_fixup_lr (struct bfd_link_info *,
|
||||
unsigned int, bfd_vma);
|
||||
static bfd_boolean alpha_vms_add_lw_reloc (struct bfd_link_info *);
|
||||
static bfd_boolean alpha_vms_add_qw_reloc (struct bfd_link_info *);
|
||||
|
||||
struct vector_type
|
||||
{
|
||||
|
|
@ -401,17 +403,12 @@ struct vector_type
|
|||
|
||||
/* Be sure there is room for a new element. */
|
||||
|
||||
static void vector_grow1 (struct vector_type *vec, size_t elsz);
|
||||
static void *vector_grow1 (struct vector_type *vec, size_t elsz);
|
||||
|
||||
/* Allocate room for a new element and return its address. */
|
||||
|
||||
#define VEC_APPEND(VEC, TYPE) \
|
||||
(vector_grow1 (&VEC, sizeof (TYPE)), &VEC_EL(VEC, TYPE, (VEC).nbr_el++))
|
||||
|
||||
/* Append an element. */
|
||||
|
||||
#define VEC_APPEND_EL(VEC, TYPE, EL) \
|
||||
(*(VEC_APPEND (VEC, TYPE)) = EL)
|
||||
((TYPE *) vector_grow1 (&VEC, sizeof (TYPE)))
|
||||
|
||||
struct alpha_vms_vma_ref
|
||||
{
|
||||
|
|
@ -2004,14 +2001,16 @@ _bfd_vms_slurp_etir (bfd *abfd, struct bfd_link_info *info)
|
|||
}
|
||||
else if (rel1 & RELC_SHR_BASE)
|
||||
{
|
||||
alpha_vms_add_fixup_lr (info, rel1 & RELC_MASK, op1);
|
||||
if (!alpha_vms_add_fixup_lr (info, rel1 & RELC_MASK, op1))
|
||||
return FALSE;
|
||||
rel1 = RELC_NONE;
|
||||
}
|
||||
if (rel1 != RELC_NONE)
|
||||
{
|
||||
if (rel1 != RELC_REL)
|
||||
abort ();
|
||||
alpha_vms_add_lw_reloc (info);
|
||||
if (!alpha_vms_add_lw_reloc (info))
|
||||
return FALSE;
|
||||
}
|
||||
image_write_l (abfd, op1);
|
||||
break;
|
||||
|
|
@ -2032,7 +2031,8 @@ _bfd_vms_slurp_etir (bfd *abfd, struct bfd_link_info *info)
|
|||
{
|
||||
if (rel1 != RELC_REL)
|
||||
abort ();
|
||||
alpha_vms_add_qw_reloc (info);
|
||||
if (!alpha_vms_add_qw_reloc (info))
|
||||
return FALSE;
|
||||
}
|
||||
image_write_q (abfd, op1);
|
||||
break;
|
||||
|
|
@ -2064,15 +2064,17 @@ _bfd_vms_slurp_etir (bfd *abfd, struct bfd_link_info *info)
|
|||
{
|
||||
if (h->sym->typ == EGSD__C_SYMG)
|
||||
{
|
||||
alpha_vms_add_fixup_qr
|
||||
(info, abfd, h->sym->owner, h->sym->symbol_vector);
|
||||
if (!alpha_vms_add_fixup_qr (info, abfd, h->sym->owner,
|
||||
h->sym->symbol_vector))
|
||||
return FALSE;
|
||||
op1 = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
op1 = alpha_vms_get_sym_value (h->sym->section,
|
||||
h->sym->value);
|
||||
alpha_vms_add_qw_reloc (info);
|
||||
if (!alpha_vms_add_qw_reloc (info))
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
image_write_q (abfd, op1);
|
||||
|
|
@ -2089,14 +2091,16 @@ _bfd_vms_slurp_etir (bfd *abfd, struct bfd_link_info *info)
|
|||
/* That's really a procedure. */
|
||||
if (h->sym->typ == EGSD__C_SYMG)
|
||||
{
|
||||
alpha_vms_add_fixup_ca (info, abfd, h->sym->owner);
|
||||
if (!alpha_vms_add_fixup_ca (info, abfd, h->sym->owner))
|
||||
return FALSE;
|
||||
op1 = h->sym->symbol_vector;
|
||||
}
|
||||
else
|
||||
{
|
||||
op1 = alpha_vms_get_sym_value (h->sym->code_section,
|
||||
h->sym->code_value);
|
||||
alpha_vms_add_qw_reloc (info);
|
||||
if (!alpha_vms_add_qw_reloc (info))
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
else
|
||||
|
|
@ -2201,7 +2205,8 @@ _bfd_vms_slurp_etir (bfd *abfd, struct bfd_link_info *info)
|
|||
{
|
||||
if (h->sym->typ == EGSD__C_SYMG)
|
||||
{
|
||||
alpha_vms_add_fixup_lp (info, abfd, h->sym->owner);
|
||||
if (!alpha_vms_add_fixup_lp (info, abfd, h->sym->owner))
|
||||
return FALSE;
|
||||
op1 = h->sym->symbol_vector;
|
||||
op2 = 0;
|
||||
}
|
||||
|
|
@ -2950,22 +2955,30 @@ _bfd_vms_write_eeom (bfd *abfd)
|
|||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
static void *
|
||||
vector_grow1 (struct vector_type *vec, size_t elsz)
|
||||
{
|
||||
if (vec->nbr_el + 1 < vec->max_el)
|
||||
return;
|
||||
|
||||
if (vec->max_el == 0)
|
||||
if (vec->nbr_el >= vec->max_el)
|
||||
{
|
||||
vec->max_el = 16;
|
||||
vec->els = bfd_malloc2 (vec->max_el, elsz);
|
||||
}
|
||||
else
|
||||
{
|
||||
vec->max_el *= 2;
|
||||
vec->els = bfd_realloc2 (vec->els, vec->max_el, elsz);
|
||||
if (vec->max_el == 0)
|
||||
{
|
||||
vec->max_el = 16;
|
||||
vec->els = bfd_malloc2 (vec->max_el, elsz);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (vec->max_el > -1u / 2)
|
||||
{
|
||||
bfd_set_error (bfd_error_file_too_big);
|
||||
return NULL;
|
||||
}
|
||||
vec->max_el *= 2;
|
||||
vec->els = bfd_realloc2 (vec->els, vec->max_el, elsz);
|
||||
}
|
||||
}
|
||||
if (vec->els == NULL)
|
||||
return NULL;
|
||||
return (char *) vec->els + elsz * vec->nbr_el++;
|
||||
}
|
||||
|
||||
/* Bump ABFD file position to next block. */
|
||||
|
|
@ -8330,41 +8343,49 @@ alpha_vms_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED,
|
|||
|
||||
/* Add a linkage pair fixup at address SECT + OFFSET to SHLIB. */
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
alpha_vms_add_fixup_lp (struct bfd_link_info *info, bfd *src, bfd *shlib)
|
||||
{
|
||||
struct alpha_vms_shlib_el *sl;
|
||||
asection *sect = PRIV2 (src, image_section);
|
||||
file_ptr offset = PRIV2 (src, image_offset);
|
||||
bfd_vma *p;
|
||||
|
||||
sl = &VEC_EL (alpha_vms_link_hash (info)->shrlibs,
|
||||
struct alpha_vms_shlib_el, PRIV2 (shlib, shr_index));
|
||||
sl->has_fixups = TRUE;
|
||||
VEC_APPEND_EL (sl->lp, bfd_vma,
|
||||
sect->output_section->vma + sect->output_offset + offset);
|
||||
p = VEC_APPEND (sl->lp, bfd_vma);
|
||||
if (p == NULL)
|
||||
return FALSE;
|
||||
*p = sect->output_section->vma + sect->output_offset + offset;
|
||||
sect->output_section->flags |= SEC_RELOC;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* Add a code address fixup at address SECT + OFFSET to SHLIB. */
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
alpha_vms_add_fixup_ca (struct bfd_link_info *info, bfd *src, bfd *shlib)
|
||||
{
|
||||
struct alpha_vms_shlib_el *sl;
|
||||
asection *sect = PRIV2 (src, image_section);
|
||||
file_ptr offset = PRIV2 (src, image_offset);
|
||||
bfd_vma *p;
|
||||
|
||||
sl = &VEC_EL (alpha_vms_link_hash (info)->shrlibs,
|
||||
struct alpha_vms_shlib_el, PRIV2 (shlib, shr_index));
|
||||
sl->has_fixups = TRUE;
|
||||
VEC_APPEND_EL (sl->ca, bfd_vma,
|
||||
sect->output_section->vma + sect->output_offset + offset);
|
||||
p = VEC_APPEND (sl->ca, bfd_vma);
|
||||
if (p == NULL)
|
||||
return FALSE;
|
||||
*p = sect->output_section->vma + sect->output_offset + offset;
|
||||
sect->output_section->flags |= SEC_RELOC;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* Add a quad word relocation fixup at address SECT + OFFSET to SHLIB. */
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
alpha_vms_add_fixup_qr (struct bfd_link_info *info, bfd *src,
|
||||
bfd *shlib, bfd_vma vec)
|
||||
{
|
||||
|
|
@ -8377,30 +8398,35 @@ alpha_vms_add_fixup_qr (struct bfd_link_info *info, bfd *src,
|
|||
struct alpha_vms_shlib_el, PRIV2 (shlib, shr_index));
|
||||
sl->has_fixups = TRUE;
|
||||
r = VEC_APPEND (sl->qr, struct alpha_vms_vma_ref);
|
||||
if (r == NULL)
|
||||
return FALSE;
|
||||
r->vma = sect->output_section->vma + sect->output_offset + offset;
|
||||
r->ref = vec;
|
||||
sect->output_section->flags |= SEC_RELOC;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
alpha_vms_add_fixup_lr (struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||||
unsigned int shr ATTRIBUTE_UNUSED,
|
||||
bfd_vma vec ATTRIBUTE_UNUSED)
|
||||
{
|
||||
/* Not yet supported. */
|
||||
abort ();
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* Add relocation. FIXME: Not yet emitted. */
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
alpha_vms_add_lw_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static void
|
||||
static bfd_boolean
|
||||
alpha_vms_add_qw_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static struct bfd_hash_entry *
|
||||
|
|
@ -8527,6 +8553,8 @@ alpha_vms_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
|
|||
|
||||
shlib = VEC_APPEND (alpha_vms_link_hash (info)->shrlibs,
|
||||
struct alpha_vms_shlib_el);
|
||||
if (shlib == NULL)
|
||||
return FALSE;
|
||||
shlib->abfd = abfd;
|
||||
VEC_INIT (shlib->ca);
|
||||
VEC_INIT (shlib->lp);
|
||||
|
|
|
|||
Loading…
Reference in New Issue