From: yann@... Date: 2014-03-09T13:14:13+00:00 Subject: [ruby-core:61391] [ruby-trunk - Bug #8860] 64-bit x86 ruby 1.9.3-p448 on Solaris core dumps on bug4950 test case Issue #8860 has been updated by Yann Rouillard. File core.part1 added File core.part2 added File test_fork_modified.rb added Hi, I confirm that this bug is still present with ruby 1.9.3 patch level 484: Output of ruby -v: ruby 1.9.3p484 (2013-11-22 revision 43786) [i386-solaris2.10] I attached the core dump (which is 6 MB, so it is split in two files) and you will find the stacktrace below. I noticed that the core dump happens only if the two signals INT and TERM are sent, when I remove one line or the other, the core dump doesn't happen. It also doesn't happen if I insert a 0.5s pause between the two signal (see the attached file test_forks_modified.rb). I will try the last ruby 1.9.3 version that went out recently. Stacktrace: core 'core' of 12295: ./work/solaris10-i386/build-isa-pentium_pro/ruby-1.9.3-p484/ruby191 te ----------------- lwp# 1 / thread# 1 -------------------- feef8e29 __lwp_park (8061084, 80610b0, 8046020) + 19 feef361b cond_wait_queue (8061084, 80610b0, 8046020) + 5e feef3998 cond_wait_common (8061084, 80610b0, 8046020) + 1db feef3bca _cond_timedwait (8061084, 80610b0, 80460d8) + 51 feef3c35 cond_timedwait (8061084, 80610b0, 80460d8) + 24 feef3c71 pthread_cond_timedwait (8061084, 80610b0, 80460d8, fed9a3de) + 1e fed9a3fe native_cond_timedwait (8061084, 80610b0, 80460d8, 0) + 2e fed9aa87 native_sleep (8061030, 8046154, feffa320, fed9c211) + d7 fed9c26f sleep_timeval (8061030, 1, 0, fed9c41c) + 6c fed9c43a rb_thread_wait_for (1, 0, 0, fecc530d) + 2a fecc534f rb_f_sleep (1, 806525c, 8114da8, fed576b2) + 4f fed74d8d vm_exec_core (8061030, 0, fee2c4e0, fed97041) + 1d6ec fed9772e vm_exec (8061030, 80fe1c0, fef60018, fed9782d) + 6fe fed97852 rb_iseq_eval_main (80fe1c0, 8047a88, feef6b6a, fec5a101) + 32 fec5a184 ruby_exec_internal (80fe1c0, 0, 0, fec5a27c, 8047b38) + 8f fec5a29a ruby_exec_node (80fe1c0) + 2a fec5a24b ruby_run_node (80fe1c0, 8047b98, 8047b68, 8050b78, 29, fef77790) + 34 08050b8f main (2, 8047b98, 8047ba4, 8047b8c) + 5f 08050a9d _start (2, 8047c5c, 8047ca0, 0, 8047cad, 8047d6d) + 7d ----------------- lwp# 3 / thread# 3 -------------------- feefde86 __systemcall (3, fee30618, 0) + 6 feeeeb44 call_user_handler (2, fee30bdc, fee3068c) + 1e0 feeeecd0 sigacthandler (2, fee30bdc, fee3068c) + 7c --- called from signal handler with signal 2 (SIGINT) --- feefbe95 __pollsys (fee32ca0, 1, 0, 0) + 15 feea5871 pselect_large_fdset (4, fee32f40, fee30ca0, fee30ca0, 0, 0) + 1fd feea5b97 select_large_fdset (4, fee32f40, 0, 0, 0, 0) + 82 fed9af1d thread_timer (8060dbc) + c5 feef8aab _thr_setup (feba0200) + 4e feef8db0 _lwp_start (feba0200, 0, 0, fee32ff8, feef8db0, feba0200) ---------------------------------------- Bug #8860: 64-bit x86 ruby 1.9.3-p448 on Solaris core dumps on bug4950 test case https://bugs.ruby-lang.org/issues/8860#change-45703 * Author: April Chin * Status: Feedback * Priority: Normal * Assignee: * Category: * Target version: * ruby -v: ruby 1.9.3p448 (2013-06-27 revision 41675) [i386-solaris2.12] * Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN ---------------------------------------- 64-bit ruby 1.9.3-p448 on x86 in Solaris, compiled with the Studio 12.1 compiler, core dumps against the test case for bug 4950 in bootstraptest/test_fork.rb. This problem sounds similar to issue 6334, which was rejected due to lack of information. The core dump does not occur with 64-bit ruby 1.9.3 on sparc. configure options used: --prefix=/usr/ruby/1.9 --mandir=/usr/ruby/1.9/share/man --bindir=/usr/ruby/1.9/bin --libdir=/usr/ruby/1.9/lib --sbindir=/usr/ruby/1.9/sbin --enable-shared --enable-rpath --enable-install-doc --disable-option-checking --with-openssl CFLAGS="-m64 -xO2 -xchip=generic -Ui386 -U__i386 -D__amd64 -xregs=no%frameptr -mt -DFFI_NO_RAW_API" $ cat bug4950 a = [] trap(:INT) { a.push(1) } trap(:TERM) { a.push(2) } pid = $$ fork do sleep 0.5 puts "send start" Process.kill(:INT, pid) Process.kill(:TERM, pid) puts "send end" end puts "sleep start" sleep 3 puts "sleep end" p a $ ruby bug4950 sleep start send start send end Memory fault(coredump) $ pstack core core 'core' of 24964: ruby bug4950 ------------ lwp# 1 / thread# 1 --------------- ffff80ffbf5a6797 __lwp_park () + 17 ffff80ffbf5a0062 cond_wait_queue () + 62 ffff80ffbf5a04a0 cond_wait_common () + 1dc ffff80ffbf5a06e5 __cond_timedwait () + 5d ffff80ffbf5a0779 cond_timedwait () + 29 ffff80ffbf5a07ad pthread_cond_timedwait () + 9 ffff80ffb8799564 native_cond_timedwait () + 24 ffff80ffb8799b5c native_sleep () + d8 ffff80ffb879b26d sleep_timeval () + 7d ffff80ffb879b3ff rb_thread_wait_for () + 27 ffff80ffb8712162 rb_f_sleep () + 4a ffff80ffb8789eb4 vm_call_cfunc () + c0 ffff80ffb878a562 vm_call_method () + 2ae ffff80ffb878d57b vm_exec_core () + 1403 ffff80ffb8796e7b vm_exec () + 5c7 ffff80ffb8796f93 rb_iseq_eval_main () + 2b ffff80ffb86b3917 ruby_exec_internal () + 87 ffff80ffb86b39f6 ruby_exec_node () + 1e ffff80ffb86b39bc ruby_run_node () + 24 0000000000400ec8 main () + 4c 0000000000400d1c ???????? () ------------ lwp# 3 / thread# 3 --------------- ffff80ffbf7b189f lookup_sym () + 3b ffff80ffbf7cb9db elf_bndr () + 11b ffff80ffbf7ad073 elf_rtbndr () + 83 ffff80ffbf7ee030 ???????? () ffff80ffbf5a6876 __sighndlr () + 6 ffff80ffbf599bba call_user_handler () + 2ce ffff80ffbf59a063 sigacthandler (f, ffff80ffbf76b6c8, ffff80ffbf76b360) + db --- called from signal handler with signal 15 (SIGTERM) --- ffff80ffbf5b026b _syscall6 () + 1b ffff80ffbf599b01 call_user_handler () + 215 ffff80ffbf59a063 sigacthandler (2, ffff80ffbf76bc98, ffff80ffbf76b930) + db --- called from signal handler with signal 2 (SIGINT) --- ffff80ffbf5af64a __pollsys () + a ffff80ffbf4fc6c5 pselect () + 181 ffff80ffbf4fcb44 select () + 68 ffff80ffb8799f57 thread_timer () + b3 ffff80ffbf5a64a5 _thrp_setup () + a5 ffff80ffbf5a6750 _lwp_start () ---Files-------------------------------- core.part1 (3 MB) core.part2 (2.96 MB) test_fork_modified.rb (267 Bytes) -- http://bugs.ruby-lang.org/