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-rw-r--r--erts/emulator/beam/erl_bif_binary.c76
-rw-r--r--erts/emulator/test/guard_SUITE.erl9
2 files changed, 57 insertions, 28 deletions
diff --git a/erts/emulator/beam/erl_bif_binary.c b/erts/emulator/beam/erl_bif_binary.c
index ea8ea2e53d..cba17ee6eb 100644
--- a/erts/emulator/beam/erl_bif_binary.c
+++ b/erts/emulator/beam/erl_bif_binary.c
@@ -260,7 +260,11 @@ static void dump_ac_node(ACNode *node, int indent, int ch);
/*
* Callback for the magic binary
*/
-static void cleanup_my_data(Binary *bp)
+static void cleanup_my_data_ac(Binary *bp)
+{
+ return;
+}
+static void cleanup_my_data_bm(Binary *bp)
{
return;
}
@@ -277,7 +281,7 @@ static ACTrie *create_acdata(MyAllocator *my, Uint len,
Uint datasize = AC_SIZE(len);
ACTrie *act;
ACNode *acn;
- Binary *mb = erts_create_magic_binary(datasize,cleanup_my_data);
+ Binary *mb = erts_create_magic_binary(datasize,cleanup_my_data_ac);
byte *data = ERTS_MAGIC_BIN_DATA(mb);
init_my_allocator(my, datasize, data);
@@ -306,7 +310,7 @@ static BMData *create_bmdata(MyAllocator *my, byte *x, Uint len,
{
Uint datasize = BM_SIZE(len);
BMData *bmd;
- Binary *mb = erts_create_magic_binary(datasize,cleanup_my_data);
+ Binary *mb = erts_create_magic_binary(datasize,cleanup_my_data_bm);
byte *data = ERTS_MAGIC_BIN_DATA(mb);
init_my_allocator(my, datasize, data);
bmd = my_alloc(my, sizeof(BMData));
@@ -708,7 +712,7 @@ static void compute_suffixes(byte *x, Sint m, Sint *suffixes)
g = m - 1;
for (i = m - 2; i >= 0; --i) {
- if (i > g && suffixes[i + m - f] < i - g) {
+ if (i > g && suffixes[i + m - 1 - f] < i - g) {
suffixes[i] = suffixes[i + m - 1 - f];
} else {
if (i < g) {
@@ -731,7 +735,7 @@ static void compute_goodshifts(BMData *bmd)
Sint m = bmd->len;
byte *x = bmd->x;
Sint i, j;
- Sint *suffixes = erts_alloc(ERTS_ALC_T_TMP, m * sizeof(Uint));
+ Sint *suffixes = erts_alloc(ERTS_ALC_T_TMP, m * sizeof(Sint));
compute_suffixes(x, m, suffixes);
@@ -1329,13 +1333,15 @@ static int parse_match_opts_list(Eterm l, Eterm bin, Uint *posp, Uint *endp)
}
if (len < 0) {
Sint lentmp = -len;
- if (-lentmp != len) {
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
goto badarg;
}
len = lentmp;
pos -= len;
}
- if (((pos + len) - len) != pos) {
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)) {
goto badarg;
}
*endp = len + pos;
@@ -1367,10 +1373,9 @@ static BIF_RETTYPE binary_match_trap(BIF_ALIST_3)
BIF_TRAP3(&binary_match_trap_export, BIF_P, BIF_ARG_1, result,
BIF_ARG_3);
default:
- goto badarg;
+ /* Cannot badarg in the trap */
+ erl_exit(1, "Internal error in binary_match_trap.");
}
- badarg:
- BIF_ERROR(BIF_P,BADARG);
}
static BIF_RETTYPE binary_matches_trap(BIF_ALIST_3)
@@ -1387,10 +1392,9 @@ static BIF_RETTYPE binary_matches_trap(BIF_ALIST_3)
BIF_TRAP3(&binary_matches_trap_export, BIF_P, BIF_ARG_1, result,
BIF_ARG_3);
default:
- goto badarg;
+ /* Cannot badarg in the trap */
+ erl_exit(1, "Internal error in binary_matches_trap.");
}
- badarg:
- BIF_ERROR(BIF_P,BADARG);
}
@@ -1425,7 +1429,12 @@ BIF_RETTYPE binary_match_3(BIF_ALIST_3)
}
type = tp[1];
bin = ((ProcBin *) binary_val(tp[2]))->val;
- if (ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data) {
+ if (type == am_bm &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_bm) {
+ goto badarg;
+ }
+ if (type == am_ac &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_ac) {
goto badarg;
}
bin_term = tp[2];
@@ -1482,7 +1491,12 @@ BIF_RETTYPE binary_matches_3(BIF_ALIST_3)
}
type = tp[1];
bin = ((ProcBin *) binary_val(tp[2]))->val;
- if (ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data) {
+ if (type == am_bm &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_bm) {
+ goto badarg;
+ }
+ if (type == am_ac &&
+ ERTS_MAGIC_BIN_DESTRUCTOR(bin) != cleanup_my_data_ac) {
goto badarg;
}
bin_term = tp[2];
@@ -1547,7 +1561,8 @@ BIF_RETTYPE erts_binary_part(Process *p, Eterm binary, Eterm epos, Eterm elen)
}
if (len < 0) {
Sint lentmp = -len;
- if (-lentmp != len) {
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
goto badarg;
}
len = lentmp;
@@ -1556,7 +1571,8 @@ BIF_RETTYPE erts_binary_part(Process *p, Eterm binary, Eterm epos, Eterm elen)
}
pos -= len;
}
- if (((pos + len) - len) != pos) {
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)){
goto badarg;
}
if ((orig_size = binary_size(binary)) < pos ||
@@ -1634,7 +1650,8 @@ BIF_RETTYPE erts_gc_binary_part(Process *p, Eterm *reg, Eterm live, int range_is
}
if (len < 0) {
Sint lentmp = -len;
- if (-lentmp != len) {
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
goto badarg;
}
len = lentmp;
@@ -1643,7 +1660,8 @@ BIF_RETTYPE erts_gc_binary_part(Process *p, Eterm *reg, Eterm live, int range_is
}
pos -= len;
}
- if (((pos + len) - len) != pos) {
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)) {
goto badarg;
}
if ((orig_size = binary_size(binary)) < pos ||
@@ -1926,6 +1944,7 @@ static BIF_RETTYPE do_longest_common(Process *p, Eterm list, int direction)
unsigned char *tmp = cd[i].buff;
cd[i].buff = erts_alloc(ERTS_ALC_T_BINARY_BUFFER, cd[i].bufflen);
memcpy(cd[i].buff,tmp,cd[i].bufflen);
+ cd[i].type = CL_TYPE_HEAP;
}
}
hp = HAlloc(p, PROC_BIN_SIZE);
@@ -1975,7 +1994,7 @@ static BIF_RETTYPE do_longest_common_trap(Process *p, Eterm bin_term, Eterm curr
ASSERT(res == CL_RESTART);
/* Copy all heap binaries that are not already copied (aligned) */
BUMP_ALL_REDS(p);
- BIF_TRAP3(&binary_longest_prefix_trap_export, p, bin_term, epos, orig_list);
+ BIF_TRAP3(trapper, p, bin_term, epos, orig_list);
}
}
@@ -2104,16 +2123,15 @@ BIF_RETTYPE binary_at_2(BIF_ALIST_2)
static int do_bin_to_list(Process *p, byte *bytes, Uint bit_offs,
Uint start, Sint *lenp, Eterm *termp)
{
- Uint reds = get_reds(p, BIN_TO_LIST_LOOP_FACTOR);
+ Uint reds = get_reds(p, BIN_TO_LIST_LOOP_FACTOR); /* reds can never be 0 */
Uint len = *lenp;
Uint loops;
Eterm *hp;
Eterm term = *termp;
Uint n;
- if (reds == 0) {
- return BIN_TO_LIST_TRAP;
- }
+ ASSERT(reds > 0);
+
loops = MIN(reds,len);
BUMP_REDS(p, loops / BIN_TO_LIST_LOOP_FACTOR);
@@ -2170,8 +2188,8 @@ static BIF_RETTYPE binary_bin_to_list_trap(BIF_ALIST_3)
len = (Sint) ptr[2];
ERTS_GET_BINARY_BYTES(BIF_ARG_1,bytes,bit_offs,bit_size);
- if(do_bin_to_list(BIF_P, bytes, bit_offs, start, &len, &res) ==
- BIN_TO_LIST_OK) {
+ if (do_bin_to_list(BIF_P, bytes, bit_offs, start, &len, &res) ==
+ BIN_TO_LIST_OK) {
BIF_RET(res);
}
return do_trap_bin_to_list(BIF_P,BIF_ARG_1,start,len,res);
@@ -2201,7 +2219,8 @@ static BIF_RETTYPE binary_bin_to_list_common(Process *p,
}
if (len < 0) {
Sint lentmp = -len;
- if (-lentmp != len) {
+ /* overflow */
+ if (lentmp == len || lentmp < 0 || -lentmp != len) {
goto badarg;
}
len = lentmp;
@@ -2210,7 +2229,8 @@ static BIF_RETTYPE binary_bin_to_list_common(Process *p,
}
pos -= len;
}
- if (((pos + len) - len) != pos) {
+ /* overflow */
+ if ((pos + len) < pos || (len > 0 && (pos + len) == pos)) {
goto badarg;
}
sz = binary_size(bin);
diff --git a/erts/emulator/test/guard_SUITE.erl b/erts/emulator/test/guard_SUITE.erl
index fa311badf1..62de615a90 100644
--- a/erts/emulator/test/guard_SUITE.erl
+++ b/erts/emulator/test/guard_SUITE.erl
@@ -146,6 +146,15 @@ mask_error(Else) ->
guard_bif_binary_part(doc) ->
["Test the binary_part/2,3 guard BIF's extensively"];
guard_bif_binary_part(Config) when is_list(Config) ->
+ %% Overflow tests that need to be unoptimized
+ ?line badarg =
+ ?MASK_ERROR(
+ binary_part(<<1,2,3>>,{16#FFFFFFFFFFFFFFFF,
+ -16#7FFFFFFFFFFFFFFF-1})),
+ ?line badarg =
+ ?MASK_ERROR(
+ binary_part(<<1,2,3>>,{16#FFFFFFFFFFFFFFFF,
+ 16#7FFFFFFFFFFFFFFF})),
F = fun(X) ->
Master = self(),
{Pid,Ref} = spawn_monitor( fun() ->
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 16:29:42 +0000