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Date:      Tue, 5 Nov 2013 22:20:01 GMT
From:      Andreas Longwitz <longwitz@incore.de>
To:        mono@FreeBSD.org
Subject:   Re: ports/182057: lang/mono (mono 3.2.1) does not build on amd64
Message-ID:  <201311052220.rA5MK1Xv041907@freefall.freebsd.org>

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The following reply was made to PR ports/182057; it has been noted by GNATS.

From: Andreas Longwitz <longwitz@incore.de>
To: bug-followup@freebsd.org, mono@freebsd.org
Cc:  
Subject: Re: ports/182057: lang/mono (mono 3.2.1) does not build on amd64
Date: Tue, 05 Nov 2013 23:00:28 +0100

 The SIGSEGV core caused by mono-sgen and stable on amd64:
 The following command gives a core:
 
 /home/tmp/usr/ports/lang/mono/work/mono-3.2.1/mono/mini/mono-sgen
    --config
 /home/tmp/usr/ports/lang/mono/work/mono-3.2.1/runtime/etc/mono/config
   ./../class/lib/monolite/basic.exe -sdk:2:
 
 gdb /home/tmp/usr/ports/lang/mono/work/mono-3.2.1/mono/mini/mono-sgen
 /var/core/mono-sgen-50576.core
 GNU gdb 6.1.1 [FreeBSD]
 Copyright 2004 Free Software Foundation, Inc.
 GDB is free software, covered by the GNU General Public License, and you are
 welcome to change it and/or distribute copies of it under certain
 conditions.
 Type "show copying" to see the conditions.
 There is absolutely no warranty for GDB.  Type "show warranty" for details.
 This GDB was configured as "amd64-marcel-freebsd"...
 Core was generated by `mono-sgen'.
 Program terminated with signal 6, Aborted.
 Reading symbols from /usr/local/lib/libiconv.so.3...done.
 Loaded symbols for /usr/local/lib/libiconv.so.3
 Reading symbols from /lib/libm.so.5...done.
 Loaded symbols for /lib/libm.so.5
 Reading symbols from /lib/libthr.so.3...done.
 Loaded symbols for /lib/libthr.so.3
 Reading symbols from /lib/libc.so.7...done.
 Loaded symbols for /lib/libc.so.7
 Reading symbols from /libexec/ld-elf.so.1...done.
 Loaded symbols for /libexec/ld-elf.so.1
 #0  0x0000000180e91c6c in kill () from /lib/libc.so.7
 [New Thread 1810041c0 (LWP 100627/initial thread)]
 (gdb) bt
 #0  0x0000000180e91c6c in kill () from /lib/libc.so.7
 #1  0x0000000180e90a6b in abort () from /lib/libc.so.7
 #2  0x00000000004ae8ce in mono_handle_native_sigsegv (signal=11,
 ctx=<value optimized out>)
     at mini-exceptions.c:2380
 #3  0x0000000000416ab3 in mono_sigsegv_signal_handler (_dummy=11,
 info=0x7fffffffe290, context=0x7fffffffdf20)
     at mini.c:6522
 #4  <signal handler called>
 #5  0x00000000005f5112 in sgen_stop_world (generation=1) at sgen-stw.c:70
 #6  0x00000000005d3a35 in sgen_perform_collection (requested_size=80,
 generation_to_collect=1,
     reason=0x6fd0f1 "mature allocation failure", wait_to_finish=0) at
 sgen-gc.c:3409
 #7  0x00000000005e9700 in alloc_degraded (vtable=0x1811160c8, size=80,
 for_mature=<value optimized out>)
     at sgen-alloc.c:132
 #8  0x00000000005e977a in mono_gc_alloc_mature (vtable=0x1811160c8) at
 sgen-alloc.c:593
 #9  0x0000000000582566 in new_thread_with_internal (domain=<value
 optimized out>, internal=0x182afc010)
     at threads.c:494
 #10 0x000000000058571c in mono_thread_attach_full (domain=0x181067300,
 force_attach=0) at threads.c:965
 #11 0x000000000059d7b9 in mono_runtime_init (domain=0x181067300,
 start_cb=0x415d80 <mono_thread_start_cb>,
     attach_cb=<value optimized out>) at appdomain.c:256
 #12 0x00000000004156a5 in mini_init (filename=<value optimized out>,
 runtime_version=0x0) at mini.c:7295
 #13 0x0000000000484de8 in mono_main (argc=5, argv=0x7fffffffe798) at
 driver.c:1851
 #14 0x00000000004132ae in _start ()
 #15 0x0000000180855000 in ?? ()
 #16 0x0000000000000000 in ?? ()
 
 (gdb) info thread
 * 1 Thread 1810041c0 (LWP 100627/initial thread)  0x0000000180e91c6c in
 kill () from /lib/libc.so.7
 
 (gdb) f 5
 #5  0x00000000005f5112 in sgen_stop_world (generation=1) at sgen-stw.c:70
 70      memcpy (&info->ctx, &cur_thread_ctx, sizeof (MonoContext));
 (gdb) info loc
 count = 0
 dead = <value optimized out>
 (gdb) p sgen_global_stop_count
 $2 = 0
 (gdb) p (SgenThreadInfo *)info
 i$3 = {info = {node = {next = 0x2020203a534c5409, key =
 2314885530818453536}, small_id = 1752457055,
     native_handle = 1684104562, thread_state = 1230178570,
 runtime_thread = 1195725639,
     suspend_lock = 0x2020202020203a56, suspend_count = 1953259808,
     finish_resume_semaphore = 0x6669746f4e090a6b, resume_semaphore =
 0x3a6e6f6974616369,
     suspend_semaphore = 0x65756575716b2020, syscall_break_signal =
 1916864778,
     suspend_can_continue = 1953065059, suspend_state = {ctx = {rax =
 2322280100134151013,
         rbx = 651390504326226208, rcx = 7234307546238118212, rdx =
 7935377865776832570,
         rbp = 8316262888140795503, rsp = 2314885530818460259, rsi =
 8387513896275025952,
         rdi = 651368724831561060, r8 = 2314885643246128204, r9 =
 8295665835966472224,
         r10 = 7234316411285303413, r11 = 7954800001277632556, r12 =
 2865758500315745, r13 = 0,
         r14 = 4294967296, r15 = 34359738370, rip = 288230376151728128},
 unwind_data = {0x480000000800000,
         0x8300000803, 0x8b000000a3}, valid = 243}, async_target =
 0x2028f7000038f7,
     user_data = 0x1029f7001028f7}, skip = 1321207, in_critical_region =
 1845495, joined_stw = 272631,
   doing_handshake = 534775, thread_is_dying = 273143, gc_disabled =
 101788159,
   stack_end = 0x6f43000000676663, stack_start = 0x6c46206c6f72746e,
 stack_start_limit = 0x776f,
   tlab_next_addr = 0x6572746400000001, tlab_start_addr = 0x616e696d6f440065,
   tlab_temp_end_addr = 0x6565725420726f74, tlab_real_end_addr = 0x200000000,
   runtime_data = 0x4643000065646f63, signal = 1752375367, stop_count =
 1852405615,
   stopped_ip = 0x65646f632067, stopped_domain = 0x61737300000004, ctx =
 {rax = 7377213155103145984,
     rbx = 18387489977951604, rcx = 34359738368, rdx =
 5062890407763144815, rbp = 2338042707166961735,
     rsp = 32497648571273801, rsi = 16, rdi = 0, r8 = 0, r9 =
 23081184315244544, r10 = 53480937073606761,
     r11 = 87821408226181352, r12 = 126102597773099361, r13 =
 171983689000681955, r14 = 203787883184456339,
     r15 = 236442498064581386, rip = 0}}
 
 Please can somebody help where to look next ?
 
 -- 
 Andreas Longwitz
 



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