From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: MPS: Forwording symbols Date: Tue, 18 Jun 2024 20:33:45 +0300 Message-ID: <86v826p346.fsf@gnu.org> References: <87jziod6yc.fsf@gmail.com> <874j9rcuf6.fsf@gmail.com> <87y173bda9.fsf@gmail.com> <87plsfbcd5.fsf@gmail.com> <86cyoeqvfc.fsf@gnu.org> <87frta9pgf.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="3908"; mail-complaints-to="usenet@ciao.gmane.io" Cc: gerd.moellmann@gmail.com, emacs-devel@gnu.org To: Helmut Eller Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Jun 18 19:34:30 2024 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sJciz-0000ij-PZ for ged-emacs-devel@m.gmane-mx.org; Tue, 18 Jun 2024 19:34:29 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sJciM-0004QO-Cn; Tue, 18 Jun 2024 13:33:50 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sJciK-0004Py-Jc for emacs-devel@gnu.org; Tue, 18 Jun 2024 13:33:48 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sJciK-0005UV-A5; Tue, 18 Jun 2024 13:33:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=gjb40T45HAJVFWK6+E7H8AS6mMZztmwB7JFQcxv52mY=; b=UeMdpq98BSOpqgCR0v8g e7p377LtkHBa/WYGf9VAjhdpQ1sLAQvbxCva/pACbJjlwyXQes/xd15Ah3PNCeIJgPPX/y8SKOfXt 2RMh7Cnod1LMcX8ZSjou5bl2uBtSAtHh1nxFbfhIm40cIjzR3QK3H/pwWLZh2NEyQfPtF67D4vt4g DMPqbXao+pGthWyvJLeauCm/aY/esMjF7ATBNNPClMtZxQN85CVp0XUaCqrZIg3f+Ipk2mNYBgQVg FCs9IT/+uQ1NnuGwEdu75qe05R6kCVi0SfckNIq1LCd1KpWtLOk6dpWp1mE/3P5IglnZOkgqh5Yuj z4bkzh/uBKSbCg==; In-Reply-To: <87frta9pgf.fsf@gmail.com> (message from Helmut Eller on Tue, 18 Jun 2024 18:37:52 +0200) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:320249 Archived-At: > From: Helmut Eller > Cc: Gerd Möllmann , > emacs-devel@gnu.org > Date: Tue, 18 Jun 2024 18:37:52 +0200 > > > and still infloops(?), hitting SIGSEGV repeatedly here: > > > > Thread 1 received signal SIGSEGV, Segmentation fault. > > igc_on_pdump_loaded (dump_base=dump_base@entry=0xb000008, > > hot_start=hot_start@entry=0xb000080, hot_end=0xb585408, > > cold_start=0xb5b0008, cold_end=cold_end@entry=0xba8b6a8, > > cold_user_data_start=0xb7038a8, heap_end=0xb707af8) at igc.c:3763 > > 3763 eassert (((struct igc_header *)cold_start)->obj_type > > (gdb) p cold_start > > $1 = (void *) 0xb5b0008 > > (gdb) p ((struct igc_header *)cold_start)->obj_type > > Cannot access memory at address 0xb5b0008 > > > > Any ideas are welcome. I will gladly provide more information if > > needed. > > Can you access it after calling igc_postmortem? Maybe barriers > work differently on Windows. No idea if this helps, but here's what I get then: #0 igc_on_pdump_loaded (dump_base=dump_base@entry=0xb000008, hot_start=hot_start@entry=0xb000080, hot_end=0xb585408, cold_start=0xb5b0008, cold_end=cold_end@entry=0xba8b6c8, cold_user_data_start=0xb7038c0, heap_end=0xb707b10) at igc.c:3769 3769 eassert (((struct igc_header *)cold_start)->obj_type (gdb) p ((struct igc_header *)cold_start)->obj_type Cannot access memory at address 0xb5b0008 (gdb) call igc_postmortem() Thread 5 received signal SIGTRAP, Trace/breakpoint trap. [Switching to Thread 60368.0xb908] 0x77c79031 in ntdll!DbgBreakPoint () from C:\WINDOWS\SysWOW64\ntdll.dll The program received a signal in another thread while making a function call from GDB. Evaluation of the expression containing the function (igc_postmortem) will be abandoned. When the function is done executing, GDB will silently stop. (gdb) c Continuing. [Thread 60368.0xb908 exited with code 0] Thread 1 received signal SIGTRAP, Trace/breakpoint trap. [Switching to Thread 60368.0xcaa8] 0x774996c3 in KERNELBASE!DebugBreak () from C:\WINDOWS\SysWOW64\KernelBase.dll (gdb) thread 1 [Switching to thread 1 (Thread 60368.0xcaa8)] #0 0x774996c3 in KERNELBASE!DebugBreak () from C:\WINDOWS\SysWOW64\KernelBase.dll (gdb) bt #0 0x774996c3 in KERNELBASE!DebugBreak () from C:\WINDOWS\SysWOW64\KernelBase.dll #1 0x0092477c in emacs_abort () at w32fns.c:11279 #2 0x007d4c70 in terminate_due_to_signal (sig=sig@entry=22, backtrace_limit=backtrace_limit@entry=2147483647) at emacs.c:481 #3 0x009032bf in igc_assert_fail ( file=0xdfce76 <__mon_yday+45622> "protw3.c", line=36, msg=0xdf1c80 <__mon_yday+64> "unreachable code") at igc.c:82 #4 0x009f9d53 in mps_lib_assert_fail ( condition=0xdf1c80 <__mon_yday+64> "unreachable code", line=36, file=0xdfce76 <__mon_yday+45622> "protw3.c") at mpsliban.c:87 #5 ProtSet (base=0xb590000, limit=0xb591000, mode=0) at protw3.c:36 #6 ProtSet (base=0xb590000, limit=0xb591000, mode=0) at protw3.c:19 #7 0x009f9f70 in arenaExpose (arena=0x9220000) at traceanc.c:588 #8 ArenaPostmortem (globals=0x9220008) at traceanc.c:617 #9 0x009fa035 in mps_arena_postmortem (arena=) at mpsi.c:292 #10 0x0090530d in igc_postmortem () at igc.c:3612 #11 #12 igc_on_pdump_loaded (dump_base=dump_base@entry=0xb000008, hot_start=hot_start@entry=0xb000080, hot_end=0xb585408, cold_start=0xb5b0008, cold_end=cold_end@entry=0xba8b6c8, cold_user_data_start=0xb7038c0, heap_end=0xb707b10) at igc.c:3769 #13 0x008571b8 in pdumper_load (dump_filename=, argv0=, argv0@entry=0xacf0850 "d:\\gnu\\git\\emacs\\feature\\src\\emacs.exe") at pdumper.c:6051 #14 0x00a19ae5 in load_pdump (dump_file=, argv=0x93325d0, argc=) at emacs.c:991 #15 main (argc=, argv=) at emacs.c:1443 (gdb) IOW, the call to igc_postmortem itself hits assertion violation.