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-rw-r--r--erts/doc/src/notes.xml25
-rw-r--r--erts/emulator/beam/beam_emu.c14
-rw-r--r--erts/emulator/beam/erl_db_hash.c42
-rw-r--r--erts/emulator/beam/erl_db_util.h1
-rw-r--r--erts/vsn.mk2
5 files changed, 58 insertions, 26 deletions
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml
index b3f5e1073b..748fa895e8 100644
--- a/erts/doc/src/notes.xml
+++ b/erts/doc/src/notes.xml
@@ -32,6 +32,31 @@
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 8.0.2</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fix scheduler deadlock bug in <c>ets:update_counter/4</c>
+ when key is not found and inserting the default object
+ causes the table to grow.</p>
+ <p>
+ Own Id: OTP-13731 Aux Id: ERL-188 </p>
+ </item>
+ <item>
+ <p>
+ Fix VM abort "Overrun stack and heap" in garbage
+ collection triggered by a <c>bsl</c> operation and some
+ very specific heap conditions.</p>
+ <p>
+ Own Id: OTP-13732 Aux Id: seq13142 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 8.0.1</title>
<section><title>Fixed Bugs and Malfunctions</title>
diff --git a/erts/emulator/beam/beam_emu.c b/erts/emulator/beam/beam_emu.c
index a05ca5c602..757b69787a 100644
--- a/erts/emulator/beam/beam_emu.c
+++ b/erts/emulator/beam/beam_emu.c
@@ -3026,6 +3026,7 @@ do { \
if (i == 0) {
StoreBifResult(4, Op1);
}
+ ires = big_size(Op1);
goto big_shift;
}
} else if (is_big(Op2)) {
@@ -3041,7 +3042,6 @@ do { \
OpCase(i_bsl_jIssd):
GetArg2(2, Op1, Op2);
-
do_bsl:
if (is_small(Op2)) {
i = signed_val(Op2);
@@ -3067,16 +3067,12 @@ do { \
StoreBifResult(4, Op1);
}
}
- Op1 = small_to_big(ires, tmp_big);
-#ifdef TAG_LITERAL_PTR
- Op1 |= TAG_LITERAL_PTR;
-#endif
+ ires = 1; /* big_size(small_to_big(Op1)) */
big_shift:
if (i > 0) { /* Left shift. */
- ires = big_size(Op1) + (i / D_EXP);
+ ires += (i / D_EXP);
} else { /* Right shift. */
- ires = big_size(Op1);
if (ires <= (-i / D_EXP))
ires = 3; /* ??? */
else
@@ -3095,6 +3091,9 @@ do { \
goto lb_Cl_error;
}
TestHeapPreserve(ires+1, Arg(1), Op1);
+ if (is_small(Op1)) {
+ Op1 = small_to_big(signed_val(Op1), tmp_big);
+ }
bigp = HTOP;
Op1 = big_lshift(Op1, i, bigp);
if (is_big(Op1)) {
@@ -3117,6 +3116,7 @@ do { \
if (i == 0) {
StoreBifResult(4, Op1);
}
+ ires = big_size(Op1);
goto big_shift;
}
} else if (is_big(Op2)) {
diff --git a/erts/emulator/beam/erl_db_hash.c b/erts/emulator/beam/erl_db_hash.c
index 74979f984a..12ae086b31 100644
--- a/erts/emulator/beam/erl_db_hash.c
+++ b/erts/emulator/beam/erl_db_hash.c
@@ -2866,15 +2866,7 @@ db_lookup_dbterm_hash(Process *p, DbTable *tbl, Eterm key, Eterm obj,
q->hvalue = hval;
q->next = NULL;
*bp = b = q;
-
- {
- int nitems = erts_smp_atomic_inc_read_nob(&tb->common.nitems);
- int nactive = NACTIVE(tb);
-
- if (nitems > nactive * (CHAIN_LEN + 1) && !IS_FIXED(tb)) {
- grow(tb, nactive);
- }
- }
+ flags |= DB_INC_TRY_GROW;
} else {
HashDbTerm *q, *next = b->next;
@@ -2910,6 +2902,7 @@ db_finalize_dbterm_hash(int cret, DbUpdateHandle* handle)
HashDbTerm **bp = (HashDbTerm **) handle->bp;
HashDbTerm *b = *bp;
erts_smp_rwmtx_t* lck = (erts_smp_rwmtx_t*) handle->lck;
+ HashDbTerm* free_me = NULL;
ERTS_SMP_LC_ASSERT(IS_HASH_WLOCKED(tb, lck)); /* locked by db_lookup_dbterm_hash */
@@ -2921,21 +2914,34 @@ db_finalize_dbterm_hash(int cret, DbUpdateHandle* handle)
b->hvalue = INVALID_HASH;
} else {
*bp = b->next;
- free_term(tb, b);
+ free_me = b;
}
WUNLOCK_HASH(lck);
erts_smp_atomic_dec_nob(&tb->common.nitems);
try_shrink(tb);
- } else if (handle->flags & DB_MUST_RESIZE) {
- db_finalize_resize(handle, offsetof(HashDbTerm,dbterm));
- WUNLOCK_HASH(lck);
-
- free_term(tb, b);
- }
- else {
- WUNLOCK_HASH(lck);
+ } else {
+ if (handle->flags & DB_MUST_RESIZE) {
+ db_finalize_resize(handle, offsetof(HashDbTerm,dbterm));
+ free_me = b;
+ }
+ if (handle->flags & DB_INC_TRY_GROW) {
+ int nactive;
+ int nitems = erts_smp_atomic_inc_read_nob(&tb->common.nitems);
+ WUNLOCK_HASH(lck);
+ nactive = NACTIVE(tb);
+
+ if (nitems > nactive * (CHAIN_LEN + 1) && !IS_FIXED(tb)) {
+ grow(tb, nactive);
+ }
+ } else {
+ WUNLOCK_HASH(lck);
+ }
}
+
+ if (free_me)
+ free_term(tb, free_me);
+
#ifdef DEBUG
handle->dbterm = 0;
#endif
diff --git a/erts/emulator/beam/erl_db_util.h b/erts/emulator/beam/erl_db_util.h
index 60f7067d70..4acedbfed0 100644
--- a/erts/emulator/beam/erl_db_util.h
+++ b/erts/emulator/beam/erl_db_util.h
@@ -79,6 +79,7 @@ typedef union db_table DbTable;
#define DB_MUST_RESIZE 1
#define DB_NEW_OBJECT 2
+#define DB_INC_TRY_GROW 4
/* Info about a database entry while it's being updated
* (by update_counter or update_element)
diff --git a/erts/vsn.mk b/erts/vsn.mk
index 924558dab1..dff6b615fc 100644
--- a/erts/vsn.mk
+++ b/erts/vsn.mk
@@ -18,7 +18,7 @@
# %CopyrightEnd%
#
-VSN = 8.0.1
+VSN = 8.0.2
# Port number 4365 in 4.2
# Port number 4366 in 4.3