[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)


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