X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,RCVD_IN_HOSTKARMA_YE X-Spam-Check-By: sourceware.org X-Mail-Handler: Dyn Standard SMTP by Dyn X-Report-Abuse-To: abuse AT dyndns DOT com (see http://www.dyndns.com/services/sendlabs/outbound_abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX1/BuA5Ya0h824rmL+XhRGmO Date: Sat, 13 Oct 2012 12:54:05 -0400 From: Christopher Faylor To: cygwin AT cygwin DOT com Subject: Re: sshd fork failure Message-ID: <20121013165405.GC9226@ednor.casa.cgf.cx> Reply-To: cygwin AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com References: <503F9877 DOT 5070406 AT gmail DOT com> <20121013153936 DOT GB839 AT ednor DOT casa DOT cgf DOT cx> <5079926F DOT 1020503 AT gmail DOT com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5079926F.1020503@gmail.com> User-Agent: Mutt/1.5.20 (2009-06-14) Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On Sat, Oct 13, 2012 at 06:10:23PM +0200, marco atzeri wrote: >On 10/13/2012 5:39 PM, Christopher Faylor wrote: >> On Thu, Aug 30, 2012 at 06:44:39PM +0200, marco atzeri wrote: >>> Hi, >>> tracing the sshd process on latest cygwin shapshot , >>> I see that the fork is failing due to exception C0000005 >>> >>> 1 1 [main] sshd (4644) >>> ********************************************** >>> 5921 5922 [main] sshd (4644) Program name: >>> E:\cygwin\usr\sbin\sshd.exe (windows pid 4644) >>> 30 5952 [main] sshd (4644) OS version: Windows NT-6.1 >>> 25 5977 [main] sshd (4644) >>> ********************************************** >>> 636 6613 [main] sshd (4644) sigprocmask: 0 = sigprocmask (0, >>> 0x6123D428, 0x610FBB30) >>> 122 6735 [main] sshd 4644 child_copy: cygheap - hp 0x20C low >>> 0x612708D0, high 0x61277640, res 1 >>> 1368 8103 [main] sshd 4644 child_copy: done >>> --- Process 4644, exception C0000005 at 61137277 >>> >>> >>> >>> $ addr2line.exe 61137277 -e /usr/bin/cygwin1.dll >>> /netrel/src/cygwin-snapshot-20120827-1/newlib/libc/stdlib/mbtowc_r.c:323 >>> >>> that should be: >>> >>> ch = (state->__count == 1) ? t[i++] : state->__value.__wchb[1]; >>> >>> inside __utf8_mbtowc . >>> It looks a strange place for a fork failure, but it is used in >>> winsup/cygwin/cygheap.cc so it could make sense. >>> >>> Any suggestion how to follow/debug the child portion of fork ? >> >> Is this still failing? We're looking to release 1.7.17 soon. > >on 20121012 similar but in another location. > >--- Process 6280, exception C0000005 at 61137DC8 > 427 147466 [main] sshd 6280 exception::handle: In >cygwin_except_handler exception 0xC0000005 at 0x61137DC8 sp 0x289270 > 67 147533 [main] sshd 6280 exception::handle: In >cygwin_except_handler signal 11 at 0x61137DC8 > 38 147571 [main] sshd 6280 exception::handle: In >cygwin_except_handler calling 0x0 > 37 147608 [main] sshd 6280 exception::handle: Exception: >STATUS_ACCESS_VIOLATION > > addr2line.exe 61137DC8 -e /usr/bin/cygwin1.dll >/netrel/src/cygwin-snapshot-20121012-1/newlib/libc/stdio/findfp.c:296 You seem to be the only person reporting this problem. Everyone else updates to a snapshot to cure ssh problems. FWIW, that instruction shouldn't even be executed. cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple