From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#52141: 29.0.50; Crash during redisplay Date: Sat, 27 Nov 2021 19:32:29 +0800 Message-ID: <87bl25bzqq.fsf@yahoo.com> References: <87o865c13p.fsf.ref@yahoo.com> <87o865c13p.fsf@yahoo.com> <83sfvhzvxo.fsf@gnu.org> Reply-To: Po Lu Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="17810"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.60 (gnu/linux) Cc: 52141@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Nov 27 12:33:22 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1mqvxK-0004RK-BD for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sat, 27 Nov 2021 11:32:40 +0000 Original-Received: by kubenode510.mail-prod1.omega.sg3.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 8ce3342b4faf0221b7af5d2d27741b0c; Sat, 27 Nov 2021 11:32:35 +0000 (UTC) In-Reply-To: <83sfvhzvxo.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 27 Nov 2021 13:20:51 +0200") X-Mailer: WebService/1.1.19306 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:220902 Archived-At: Eli Zaretskii writes: >> Date: Sat, 27 Nov 2021 19:03:06 +0800 >> From: Po Lu via "Bug reports for GNU Emacs, >> the Swiss army knife of text editors" >> >> >> I was typing a random document to test something, and I got the >> following crash out of the blue: >> >> #0 0x00007f201abbc85c in __pthread_kill_implementation () at /lib64/libc.so.6 >> #1 0x00007f201ab6f6b6 in raise () at /lib64/libc.so.6 >> #2 0x000000000041b6aa in terminate_due_to_signal (sig=sig@entry=11, backtrace_limit=backtrace_limit@entry=40) at emacs.c:443 >> #3 0x000000000041bb29 in handle_fatal_signal (sig=sig@entry=11) at sysdep.c:1780 >> #4 0x000000000051b9d8 in deliver_thread_signal (sig=sig@entry=11, handler=0x41bb1e ) at sysdep.c:1772 >> #5 0x000000000051ba49 in deliver_fatal_thread_signal (sig=11) at sysdep.c:1792 >> #6 handle_sigsegv (sig=11, siginfo=, arg=) at sysdep.c:1885 >> #7 0x00007f201ab6f760 in () at /lib64/libc.so.6 >> #8 0x000000000055c6b1 in make_lisp_ptr (type=, ptr=) >> at /home/oldosfan/emacs-dev/emacs-gc/src/lisp.h:1269 >> #9 set_next_vectorPython Exception : Cannot access memory at address 0xfe94cc8 >> (p=#10 setup_on_free_list (nbytes=, v=0x2ce6c10) at alloc.c:2977 >> #11 sweep_vectors () at alloc.c:3242 >> #12 0x0000000000561328 in gc_sweep () at alloc.c:7255 >> #13 garbage_collect () at alloc.c:6190 >> #14 0x0000000000561811 in maybe_garbage_collect () at alloc.c:6053 >> #15 0x00000000005804ad in maybe_gc () at /home/oldosfan/emacs-dev/emacs-gc/src/lisp.h:5161 >> #16 eval_sub (form=0x1e753d3) at eval.c:2449 >> #17 0x0000000000582149 in Feval (form=0x1e753d3, lexical=) at eval.c:2372 > ^^^^ > What is this form we are evaluating here? Can you show its contents? > (Not that I think it is related to the crash.) Its type is Lisp_Cons. However, its address is invalid. Running `xcons' in gdb complains: (gdb) xcons $9 = (struct Lisp_Cons *) 0x1e753d0 Cannot access memory at address 0x1e753d0 Thanks.