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-rw-r--r--erts/doc/src/notes.xml20
-rw-r--r--erts/emulator/beam/beam_bif_load.c14
-rw-r--r--erts/emulator/beam/beam_load.c11
-rw-r--r--erts/emulator/beam/export.c2
-rw-r--r--erts/emulator/beam/index.c9
-rw-r--r--erts/emulator/beam/index.h14
-rw-r--r--erts/vsn.mk2
-rw-r--r--otp_versions.table1
8 files changed, 59 insertions, 14 deletions
diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml
index 11777f0014..812538729d 100644
--- a/erts/doc/src/notes.xml
+++ b/erts/doc/src/notes.xml
@@ -32,6 +32,26 @@
<p>This document describes the changes made to the ERTS application.</p>
+<section><title>Erts 8.2.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fix a quite rare bug causing VM crash during code loading
+ and the use of export funs (fun M:F/A) of not yet loaded
+ modules. Requires a very specfic timing of concurrent
+ scheduler threads. Has been seen on ARM but can probably
+ also occure on other architectures. Bug has existed since
+ OTP R16.</p>
+ <p>
+ Own Id: OTP-14144 Aux Id: seq13242 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erts 8.2</title>
<section><title>Fixed Bugs and Malfunctions</title>
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 09331eb8ad..2d1aa13004 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -806,7 +806,7 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
}
if (BIF_ARG_2 == am_true) {
- int i;
+ int i, num_exps;
/*
* Make the code with the on_load function current.
@@ -822,7 +822,8 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
/*
* The on_load function succeded. Fix up export entries.
*/
- for (i = 0; i < export_list_size(code_ix); i++) {
+ num_exps = export_list_size(code_ix);
+ for (i = 0; i < num_exps; i++) {
Export *ep = export_list(i,code_ix);
if (ep == NULL || ep->info.mfa.module != BIF_ARG_1) {
continue;
@@ -845,14 +846,15 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
hipe_redirect_to_module(modp);
#endif
} else if (BIF_ARG_2 == am_false) {
- int i;
+ int i, num_exps;
/*
* The on_load function failed. Remove references to the
* code that is about to be purged from the export entries.
*/
- for (i = 0; i < export_list_size(code_ix); i++) {
+ num_exps = export_list_size(code_ix);
+ for (i = 0; i < num_exps; i++) {
Export *ep = export_list(i,code_ix);
if (ep == NULL || ep->info.mfa.module != BIF_ARG_1) {
continue;
@@ -1783,9 +1785,9 @@ delete_code(Module* modp)
{
ErtsCodeIndex code_ix = erts_staging_code_ix();
Eterm module = make_atom(modp->module);
- int i;
+ int i, num_exps = export_list_size(code_ix);
- for (i = 0; i < export_list_size(code_ix); i++) {
+ for (i = 0; i < num_exps; i++) {
Export *ep = export_list(i, code_ix);
if (ep != NULL && (ep->info.mfa.module == module)) {
if (ep->addressv[code_ix] == ep->beam) {
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 8f1faa6719..309465bcd3 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -800,14 +800,14 @@ erts_finish_loading(Binary* magic, Process* c_p,
} else {
ErtsCodeIndex code_ix = erts_staging_code_ix();
Eterm module = stp->module;
- int i;
+ int i, num_exps;
/*
* There is an -on_load() function. We will keep the current
* code, but we must turn off any tracing.
*/
-
- for (i = 0; i < export_list_size(code_ix); i++) {
+ num_exps = export_list_size(code_ix);
+ for (i = 0; i < num_exps; i++) {
Export *ep = export_list(i, code_ix);
if (ep == NULL || ep->info.mfa.module != module) {
continue;
@@ -5724,12 +5724,13 @@ exported_from_module(Process* p, /* Process whose heap to use. */
ErtsCodeIndex code_ix,
Eterm mod) /* Tagged atom for module. */
{
- int i;
+ int i, num_exps;
Eterm* hp = NULL;
Eterm* hend = NULL;
Eterm result = NIL;
- for (i = 0; i < export_list_size(code_ix); i++) {
+ num_exps = export_list_size(code_ix);
+ for (i = 0; i < num_exps; i++) {
Export* ep = export_list(i,code_ix);
if (ep->info.mfa.module == mod) {
diff --git a/erts/emulator/beam/export.c b/erts/emulator/beam/export.c
index f397ab6b00..33ed6d7ec1 100644
--- a/erts/emulator/beam/export.c
+++ b/erts/emulator/beam/export.c
@@ -356,7 +356,7 @@ Export *export_list(int i, ErtsCodeIndex code_ix)
int export_list_size(ErtsCodeIndex code_ix)
{
- return export_tables[code_ix].entries;
+ return erts_index_num_entries(&export_tables[code_ix]);
}
int export_table_sz(void)
diff --git a/erts/emulator/beam/index.c b/erts/emulator/beam/index.c
index c86a2122f6..cd834e2c12 100644
--- a/erts/emulator/beam/index.c
+++ b/erts/emulator/beam/index.c
@@ -91,9 +91,16 @@ index_put_entry(IndexTable* t, void* tmpl)
t->seg_table[ix>>INDEX_PAGE_SHIFT] = erts_alloc(t->type, sz);
t->size += INDEX_PAGE_SIZE;
}
- t->entries++;
p->index = ix;
t->seg_table[ix>>INDEX_PAGE_SHIFT][ix&INDEX_PAGE_MASK] = p;
+
+ /*
+ * Do a write barrier here to allow readers to do lock free iteration.
+ * erts_index_num_entries() does matching read barrier.
+ */
+ ERTS_SMP_WRITE_MEMORY_BARRIER;
+ t->entries++;
+
return p;
}
diff --git a/erts/emulator/beam/index.h b/erts/emulator/beam/index.h
index b2e3c0eab5..10f5d1eb39 100644
--- a/erts/emulator/beam/index.h
+++ b/erts/emulator/beam/index.h
@@ -65,6 +65,7 @@ void index_erase_latest_from(IndexTable*, Uint ix);
ERTS_GLB_INLINE int index_put(IndexTable*, void*);
ERTS_GLB_INLINE IndexSlot* erts_index_lookup(IndexTable*, Uint);
+ERTS_GLB_INLINE int erts_index_num_entries(IndexTable* t);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
@@ -78,6 +79,19 @@ erts_index_lookup(IndexTable* t, Uint ix)
{
return t->seg_table[ix>>INDEX_PAGE_SHIFT][ix&INDEX_PAGE_MASK];
}
+
+ERTS_GLB_INLINE int erts_index_num_entries(IndexTable* t)
+{
+ int ret = t->entries;
+ /*
+ * Do a read barrier here to allow lock free iteration
+ * on tables where entries are never erased.
+ * index_put_entry() does matching write barrier.
+ */
+ ERTS_SMP_READ_MEMORY_BARRIER;
+ return ret;
+}
+
#endif
#endif
diff --git a/erts/vsn.mk b/erts/vsn.mk
index af0be85062..028b114068 100644
--- a/erts/vsn.mk
+++ b/erts/vsn.mk
@@ -18,7 +18,7 @@
# %CopyrightEnd%
#
-VSN = 8.2
+VSN = 8.2.1
# Port number 4365 in 4.2
# Port number 4366 in 4.3
diff --git a/otp_versions.table b/otp_versions.table
index e21ca7fdf4..575a358010 100644
--- a/otp_versions.table
+++ b/otp_versions.table
@@ -1,3 +1,4 @@
+OTP-19.2.1 : erts-8.2.1 # asn1-4.0.4 common_test-1.13 compiler-7.0.3 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.2 debugger-4.2.1 dialyzer-3.0.3 diameter-1.12.1 edoc-0.8.1 eldap-1.2.2 erl_docgen-0.6.1 erl_interface-3.9.2 et-1.6 eunit-2.3.2 gs-1.6.2 hipe-3.15.3 ic-4.4.2 inets-6.3.4 jinterface-1.7.1 kernel-5.1.1 megaco-3.18.1 mnesia-4.14.2 observer-2.3 odbc-2.12 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.4 percept-0.9 public_key-1.3 reltool-0.7.2 runtime_tools-1.11 sasl-3.0.2 snmp-5.2.4 ssh-4.4 ssl-8.1 stdlib-3.2 syntax_tools-2.1.1 tools-2.9 typer-0.9.11 wx-1.8 xmerl-1.3.12 :
OTP-19.2 : common_test-1.13 compiler-7.0.3 crypto-3.7.2 dialyzer-3.0.3 edoc-0.8.1 erl_docgen-0.6.1 erl_interface-3.9.2 erts-8.2 eunit-2.3.2 hipe-3.15.3 inets-6.3.4 kernel-5.1.1 mnesia-4.14.2 observer-2.3 odbc-2.12 parsetools-2.1.4 public_key-1.3 runtime_tools-1.11 sasl-3.0.2 ssh-4.4 ssl-8.1 stdlib-3.2 syntax_tools-2.1.1 tools-2.9 wx-1.8 # asn1-4.0.4 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 debugger-4.2.1 diameter-1.12.1 eldap-1.2.2 et-1.6 gs-1.6.2 ic-4.4.2 jinterface-1.7.1 megaco-3.18.1 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 percept-0.9 reltool-0.7.2 snmp-5.2.4 typer-0.9.11 xmerl-1.3.12 :
OTP-19.1.6 : erts-8.1.1 # asn1-4.0.4 common_test-1.12.3 compiler-7.0.2 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.1 debugger-4.2.1 dialyzer-3.0.2 diameter-1.12.1 edoc-0.8 eldap-1.2.2 erl_docgen-0.6 erl_interface-3.9.1 et-1.6 eunit-2.3.1 gs-1.6.2 hipe-3.15.2 ic-4.4.2 inets-6.3.3 jinterface-1.7.1 kernel-5.1 megaco-3.18.1 mnesia-4.14.1 observer-2.2.2 odbc-2.11.3 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.3 percept-0.9 public_key-1.2 reltool-0.7.2 runtime_tools-1.10.1 sasl-3.0.1 snmp-5.2.4 ssh-4.3.6 ssl-8.0.3 stdlib-3.1 syntax_tools-2.1 tools-2.8.6 typer-0.9.11 wx-1.7.1 xmerl-1.3.12 :
OTP-19.1.5 : ssh-4.3.6 # asn1-4.0.4 common_test-1.12.3 compiler-7.0.2 cosEvent-2.2.1 cosEventDomain-1.2.1 cosFileTransfer-1.2.1 cosNotification-1.2.2 cosProperty-1.2.1 cosTime-1.2.2 cosTransactions-1.3.2 crypto-3.7.1 debugger-4.2.1 dialyzer-3.0.2 diameter-1.12.1 edoc-0.8 eldap-1.2.2 erl_docgen-0.6 erl_interface-3.9.1 erts-8.1 et-1.6 eunit-2.3.1 gs-1.6.2 hipe-3.15.2 ic-4.4.2 inets-6.3.3 jinterface-1.7.1 kernel-5.1 megaco-3.18.1 mnesia-4.14.1 observer-2.2.2 odbc-2.11.3 orber-3.8.2 os_mon-2.4.1 otp_mibs-1.1.1 parsetools-2.1.3 percept-0.9 public_key-1.2 reltool-0.7.2 runtime_tools-1.10.1 sasl-3.0.1 snmp-5.2.4 ssl-8.0.3 stdlib-3.1 syntax_tools-2.1 tools-2.8.6 typer-0.9.11 wx-1.7.1 xmerl-1.3.12 :
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 12:20:30 +0000