From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#28430: 26.0.50; Segfault on unexpected connection loss Date: Wed, 13 Sep 2017 18:13:42 +0300 Message-ID: <83tw06ocm1.fsf@gnu.org> References: <87h8w8qxrz.fsf@matrix> <83d16wq7vl.fsf@gnu.org> <87h8w7hsi9.fsf@matrix> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1505315655 25703 195.159.176.226 (13 Sep 2017 15:14:15 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 13 Sep 2017 15:14:15 +0000 (UTC) Cc: 28430@debbugs.gnu.org To: Daniel Kraus Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Sep 13 17:14:05 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ds9Mb-0006RM-Ar for geb-bug-gnu-emacs@m.gmane.org; Wed, 13 Sep 2017 17:14:05 +0200 Original-Received: from localhost ([::1]:43021 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ds9Mi-0005rr-Ca for geb-bug-gnu-emacs@m.gmane.org; Wed, 13 Sep 2017 11:14:12 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55816) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ds9Mb-0005ri-Jp for bug-gnu-emacs@gnu.org; Wed, 13 Sep 2017 11:14:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ds9MY-0006Vv-Dd for bug-gnu-emacs@gnu.org; Wed, 13 Sep 2017 11:14:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:58034) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ds9MY-0006Vo-AB for bug-gnu-emacs@gnu.org; Wed, 13 Sep 2017 11:14:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ds9MY-00089C-4d for bug-gnu-emacs@gnu.org; Wed, 13 Sep 2017 11:14:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 13 Sep 2017 15:14:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28430 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 28430-submit@debbugs.gnu.org id=B28430.150531563331296 (code B ref 28430); Wed, 13 Sep 2017 15:14:02 +0000 Original-Received: (at 28430) by debbugs.gnu.org; 13 Sep 2017 15:13:53 +0000 Original-Received: from localhost ([127.0.0.1]:38482 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ds9MO-00088i-Uk for submit@debbugs.gnu.org; Wed, 13 Sep 2017 11:13:53 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:36515) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ds9MN-00088V-Dw for 28430@debbugs.gnu.org; Wed, 13 Sep 2017 11:13:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ds9ME-0006EB-Ts for 28430@debbugs.gnu.org; Wed, 13 Sep 2017 11:13:46 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:47607) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ds9ME-0006Dn-RE; Wed, 13 Sep 2017 11:13:42 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3599 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1ds9ME-0003sq-8K; Wed, 13 Sep 2017 11:13:42 -0400 In-reply-to: <87h8w7hsi9.fsf@matrix> (message from Daniel Kraus on Wed, 13 Sep 2017 17:12:14 +0800) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:136883 Archived-At: > From: Daniel Kraus > Cc: 28430@debbugs.gnu.org > Date: Wed, 13 Sep 2017 17:12:14 +0800 > > >> Open new buffer (e.g. 'test.rest') and `M-x restclient-mode`. > >> Type: > >> `GET http://127.0.0.1:6543/` > >> and then press `C-c C-c` > >> > >> Switch to the netcat window and Ctrl-C to break up the connection. > >> Emacs segfaults: > >> #+BEGIN_QUOTE > >> Fatal error 11: Segmentation fault > > > > Can you please run this under GDB, and when Emacs segfaults, produce > > the C backtrace and post it here? > > --cut-- > #0 0x00007ffff017bc40 in raise () at /usr/lib/libpthread.so.0 > #1 0x0000000000597ab9 in terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at emacs.c:394 > #2 0x0000000000632a74 in die (msg=0x778761 "CONSP (data)", file=0x7786d1 "keyboard.c", line=999) at alloc.c:7419 > #3 0x000000000059c3e1 in cmd_error_internal (data=..., context=0x798c6c "error in process sentinel: ") at keyboard.c:999 > #4 0x00000000006c5edd in exec_sentinel_error_handler (error_val=...) at process.c:7105 > #5 0x0000000000657d51 in internal_condition_case_1 (bfun=0x6c2b0d , arg=..., handlers=..., hfun=0x6c5ebe ) at eval.c:1352 > #6 0x00000000006c609c in exec_sentinel (proc=..., reason=...) at process.c:7158 > #7 0x00000000006c6303 in status_notify (deleting_process=0x0, wait_proc=0x0) at process.c:7260 Thanks. This seems to be a slightly different problem: the signal here is 6 (SIGABRT), not SIGSEGV. In any case, can you show what these GDB commands produce, after the crash is triggered, and you wind up in 'raise'? (gdb) frame 4 (gdb) pp error_val After "frame 4", you should be in this function: #4 0x00000000006c5edd in exec_sentinel_error_handler (error_val=...) at process.c:7105 If not, adjust the argument 4 as needed.