From d2bb1ca56dcd0ab8e5b43c4368409317c3ddd4db Mon Sep 17 00:00:00 2001 From: Lukas Larsson Date: Tue, 18 Aug 2015 16:18:42 +0200 Subject: erts: Fix binary memory leak in ttsl driver --- erts/emulator/drivers/unix/ttsl_drv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/erts/emulator/drivers/unix/ttsl_drv.c b/erts/emulator/drivers/unix/ttsl_drv.c index 0f773b69fb..53146e71f0 100644 --- a/erts/emulator/drivers/unix/ttsl_drv.c +++ b/erts/emulator/drivers/unix/ttsl_drv.c @@ -720,6 +720,7 @@ static void ttysl_from_erlang(ErlDrvData ttysl_data, char* buf, ErlDrvSizeT coun } driver_enq_bin(ttysl_port,putcbuf,0,putcpos); + driver_free_binary(putcbuf); if (sz == 0) { for (;;) { @@ -1207,6 +1208,7 @@ static int outc(int c) putcbuf->orig_bytes[putcpos++] = c; if (putcpos == putclen) { driver_enq_bin(ttysl_port,putcbuf,0,putclen); + driver_free_binary(putcbuf); putcpos = 0; putclen = TTY_BUFFSIZE; putcbuf = driver_alloc_binary(BUFSIZ); -- cgit v1.2.3 From ba8740af39b7d4c612b2ee55e3bad6fbdcaf1418 Mon Sep 17 00:00:00 2001 From: Steve Vinoski Date: Mon, 10 Aug 2015 08:34:28 -0400 Subject: Handle ERRNO_BLOCK in fd_driver async functions Several users on erlang-questions have reported problems with recent releases where output to standard_error causes standard_error_sup to die from receiving an unexpected eagain error. In the fd_driver, change the fd_async() function to handle EINTR, and change fd_ready_async() to handle ERRNO_BLOCK. Add a new test to standard_error_SUITE to generate output to standard_error and ensure that standard_error_sup does not die. Thanks to Kota Uenishi for contributing the test case. --- erts/emulator/sys/unix/sys.c | 16 ++++++++++++---- lib/kernel/test/standard_error_SUITE.erl | 31 +++++++++++++++++++++++++++++-- 2 files changed, 41 insertions(+), 6 deletions(-) diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c index b036b20b7b..8d7da3e47e 100644 --- a/erts/emulator/sys/unix/sys.c +++ b/erts/emulator/sys/unix/sys.c @@ -2527,7 +2527,7 @@ fd_async(void *async_data) SysIOVec *iov0; SysIOVec *iov; int iovlen; - int err; + int err = 0; /* much of this code is stolen from efile_drv:invoke_writev */ driver_pdl_lock(dd->blocking->pdl); iov0 = driver_peekq(dd->port_num, &iovlen); @@ -2542,8 +2542,11 @@ fd_async(void *async_data) memcpy(iov,iov0,iovlen*sizeof(SysIOVec)); driver_pdl_unlock(dd->blocking->pdl); - res = writev(dd->ofd, iov, iovlen); - err = errno; + do { + res = writev(dd->ofd, iov, iovlen); + } while (res < 0 && errno == EINTR); + if (res < 0) + err = errno; erts_free(ERTS_ALC_T_SYS_WRITE_BUF, iov); } @@ -2582,7 +2585,12 @@ void fd_ready_async(ErlDrvData drv_data, return /* 0; */; } } else if (dd->blocking->res < 0) { - driver_failure_posix(port_num, dd->blocking->err); + if (dd->blocking->err == ERRNO_BLOCK) { + set_busy_port(port_num, 1); + /* still data left to write in queue */ + driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL); + } else + driver_failure_posix(port_num, dd->blocking->err); return; /* -1; */ } return; /* 0; */ diff --git a/lib/kernel/test/standard_error_SUITE.erl b/lib/kernel/test/standard_error_SUITE.erl index e8917bbd47..97ead9b9fd 100644 --- a/lib/kernel/test/standard_error_SUITE.erl +++ b/lib/kernel/test/standard_error_SUITE.erl @@ -21,13 +21,13 @@ -module(standard_error_SUITE). -export([all/0,suite/0]). --export([badarg/1,getopts/1]). +-export([badarg/1,getopts/1,output/1]). suite() -> [{ct_hooks,[ts_install_cth]}]. all() -> - [badarg,getopts]. + [badarg,getopts,output]. badarg(Config) when is_list(Config) -> {'EXIT',{badarg,_}} = (catch io:put_chars(standard_error, [oops])), @@ -37,3 +37,30 @@ badarg(Config) when is_list(Config) -> getopts(Config) when is_list(Config) -> [{encoding,latin1}] = io:getopts(standard_error), ok. + +%% Test that writing a lot of output to standard_error does not cause the +%% processes handling it to terminate like this: +%% +%% =ERROR REPORT==== 9-Aug-2015::23:19:23 === +%% ** Generic server standard_error_sup terminating +%% ** Last message in was {'EXIT',<0.28.0>,eagain} +%% ** When Server state == {state,standard_error,undefined,<0.28.0>, +%% {local,standard_error_sup}} +%% ** Reason for termination == +%% ** eagain +%% +%% This problem, observed with Erlang 18.0.2, was fixed in fd_driver by +%% properly handling EAGAIN if it arises on file descriptor writes. +%% +output(Config) when is_list(Config) -> + Ref = monitor(process, standard_error_sup), + Chars = [ [["1234567890" || _ <- lists:seq(1,10)], $\s, + integer_to_list(L), $\r, $\n] || L <- lists:seq(1, 100) ], + ok = io:put_chars(standard_error, Chars), + receive + {'DOWN', Ref, process, _, _} -> + error(standard_error_noproc) + after + 500 -> + ok + end. -- cgit v1.2.3 From 0dcd7fc911e4c0b6eca255e9bcfb0e58654326bf Mon Sep 17 00:00:00 2001 From: Erlang/OTP Date: Tue, 18 Aug 2015 16:39:13 +0200 Subject: Prepare release --- erts/doc/src/notes.xml | 23 +++++++++++++++++++++++ erts/vsn.mk | 2 +- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/erts/doc/src/notes.xml b/erts/doc/src/notes.xml index ab6291614c..bed1ac463d 100644 --- a/erts/doc/src/notes.xml +++ b/erts/doc/src/notes.xml @@ -31,6 +31,29 @@

This document describes the changes made to the ERTS application.

+
Erts 7.0.3 + +
Fixed Bugs and Malfunctions + + +

+ Fixed a binary memory leak when printing to shell using + the tty driver (i.e. not -oldshell).

+

+ Own Id: OTP-12941

+ + +

+ Fix a bug where the standard error port sometimes crashes + with eagain as the reason.

+

+ Own Id: OTP-12942

+ + +
+ +
+
Erts 7.0.2
Fixed Bugs and Malfunctions diff --git a/erts/vsn.mk b/erts/vsn.mk index 478f581f13..38b9a13e63 100644 --- a/erts/vsn.mk +++ b/erts/vsn.mk @@ -18,7 +18,7 @@ # %CopyrightEnd% # -VSN = 7.0.2 +VSN = 7.0.3 # Port number 4365 in 4.2 # Port number 4366 in 4.3 -- cgit v1.2.3 From 6b4c2dbd1b4a30f421611987acec6315c62ac9d5 Mon Sep 17 00:00:00 2001 From: Erlang/OTP Date: Tue, 18 Aug 2015 16:39:14 +0200 Subject: Updated OTP version --- OTP_VERSION | 2 +- otp_versions.table | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/OTP_VERSION b/OTP_VERSION index 3d5ab6e54d..d1ac72de28 100644 --- a/OTP_VERSION +++ b/OTP_VERSION @@ -1 +1 @@ -18.0.2 +18.0.3 diff --git a/otp_versions.table b/otp_versions.table index c9c0bc4291..23f00fd755 100644 --- a/otp_versions.table +++ b/otp_versions.table @@ -1,3 +1,4 @@ +OTP-18.0.3 : erts-7.0.3 # asn1-4.0 common_test-1.11 compiler-6.0 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2 cosProperty-1.2 cosTime-1.2 cosTransactions-1.3 crypto-3.6 debugger-4.1 dialyzer-2.8 diameter-1.10 edoc-0.7.17 eldap-1.2 erl_docgen-0.4 erl_interface-3.8 et-1.5.1 eunit-2.2.10 gs-1.6 hipe-3.12 ic-4.4 inets-6.0 jinterface-1.6 kernel-4.0 megaco-3.18 mnesia-4.13 observer-2.1 odbc-2.11 orber-3.8 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1 percept-0.8.11 public_key-1.0 reltool-0.7 runtime_tools-1.9.1 sasl-2.5 snmp-5.2 ssh-4.0 ssl-7.0 stdlib-2.5 syntax_tools-1.7 test_server-3.9 tools-2.8 typer-0.9.9 webtool-0.9 wx-1.4 xmerl-1.3.8 : OTP-18.0.2 : erts-7.0.2 runtime_tools-1.9.1 # asn1-4.0 common_test-1.11 compiler-6.0 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2 cosProperty-1.2 cosTime-1.2 cosTransactions-1.3 crypto-3.6 debugger-4.1 dialyzer-2.8 diameter-1.10 edoc-0.7.17 eldap-1.2 erl_docgen-0.4 erl_interface-3.8 et-1.5.1 eunit-2.2.10 gs-1.6 hipe-3.12 ic-4.4 inets-6.0 jinterface-1.6 kernel-4.0 megaco-3.18 mnesia-4.13 observer-2.1 odbc-2.11 orber-3.8 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1 percept-0.8.11 public_key-1.0 reltool-0.7 sasl-2.5 snmp-5.2 ssh-4.0 ssl-7.0 stdlib-2.5 syntax_tools-1.7 test_server-3.9 tools-2.8 typer-0.9.9 webtool-0.9 wx-1.4 xmerl-1.3.8 : OTP-18.0.1 : erts-7.0.1 # asn1-4.0 common_test-1.11 compiler-6.0 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2 cosProperty-1.2 cosTime-1.2 cosTransactions-1.3 crypto-3.6 debugger-4.1 dialyzer-2.8 diameter-1.10 edoc-0.7.17 eldap-1.2 erl_docgen-0.4 erl_interface-3.8 et-1.5.1 eunit-2.2.10 gs-1.6 hipe-3.12 ic-4.4 inets-6.0 jinterface-1.6 kernel-4.0 megaco-3.18 mnesia-4.13 observer-2.1 odbc-2.11 orber-3.8 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1 percept-0.8.11 public_key-1.0 reltool-0.7 runtime_tools-1.9 sasl-2.5 snmp-5.2 ssh-4.0 ssl-7.0 stdlib-2.5 syntax_tools-1.7 test_server-3.9 tools-2.8 typer-0.9.9 webtool-0.9 wx-1.4 xmerl-1.3.8 : OTP-18.0 : asn1-4.0 common_test-1.11 compiler-6.0 cosEvent-2.2 cosEventDomain-1.2 cosFileTransfer-1.2 cosNotification-1.2 cosProperty-1.2 cosTime-1.2 cosTransactions-1.3 crypto-3.6 debugger-4.1 dialyzer-2.8 diameter-1.10 edoc-0.7.17 eldap-1.2 erl_docgen-0.4 erl_interface-3.8 erts-7.0 et-1.5.1 eunit-2.2.10 gs-1.6 hipe-3.12 ic-4.4 inets-6.0 jinterface-1.6 kernel-4.0 megaco-3.18 mnesia-4.13 observer-2.1 odbc-2.11 orber-3.8 os_mon-2.4 ose-1.1 otp_mibs-1.1 parsetools-2.1 percept-0.8.11 public_key-1.0 reltool-0.7 runtime_tools-1.9 sasl-2.5 snmp-5.2 ssh-4.0 ssl-7.0 stdlib-2.5 syntax_tools-1.7 test_server-3.9 tools-2.8 typer-0.9.9 webtool-0.9 wx-1.4 xmerl-1.3.8 # : -- cgit v1.2.3