From 49a086299e047b18280457b654790ef4a2e5abfa Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Wed, 18 Feb 2015 00:58:35 +0100 Subject: Revert "rename open_issues.mdwn to service_solahart_jakarta_selatan__082122541663.mdwn" This reverts commit 95878586ec7611791f4001a4ee17abf943fae3c1. --- .../automatic_backtraces_when_assertions_hit.mdwn | 79 ---------------------- 1 file changed, 79 deletions(-) delete mode 100644 service_solahart_jakarta_selatan__082122541663/automatic_backtraces_when_assertions_hit.mdwn (limited to 'service_solahart_jakarta_selatan__082122541663/automatic_backtraces_when_assertions_hit.mdwn') diff --git a/service_solahart_jakarta_selatan__082122541663/automatic_backtraces_when_assertions_hit.mdwn b/service_solahart_jakarta_selatan__082122541663/automatic_backtraces_when_assertions_hit.mdwn deleted file mode 100644 index df7294e9..00000000 --- a/service_solahart_jakarta_selatan__082122541663/automatic_backtraces_when_assertions_hit.mdwn +++ /dev/null @@ -1,79 +0,0 @@ -[[!meta copyright="Copyright © 2010, 2012 Free Software Foundation, Inc."]] - -[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable -id="license" text="Permission is granted to copy, distribute and/or modify this -document under the terms of the GNU Free Documentation License, Version 1.2 or -any later version published by the Free Software Foundation; with no Invariant -Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license -is included in the section entitled [[GNU Free Documentation -License|/fdl]]."]]"""]] - -[[!tag open_issue_glibc]] - - -# IRC, unknown channel, unknown date - - tschwinge: ext2fs.static: thread-cancel.c:55: hurd_thread_cancel: Assertion `! __spin_lock_locked (&ss->critical_section_lock)' failed. - it'd be great if we could have backtraces in such case - at least just the function names - and in this case (static), just addresses would be enough - - -# IRC, freenode, #hurd, 2012-07-19 - -In context of the [[ext2fs_libports_reference_counting_assertion]]. - - pinotree: tschwinge: do you know if our packages are built with - -rdynamic ? - braunr: debian's cflags don't include it, so unless the upstream - build systems do, -rdynamic is not added - i doubt glibc' backtrace() is able to find debugging symbol files - on its own - what do you mean? - the port reference bug youpi noticed is rare - even on linux, a program compiled with normal optimizations (eg - -O2 -g) can give just pointer values in backtrace()'s output - core dumps are unreliable at best - -[[crash_server]]. - - uh, no, backtrace does give names - but not with -fomit-frame-pointer - unless the binary is built with -rdynamic - at least it used to - not really, when being optimized some steps can be optimized - away (eg inlines) - that's ok - anyway, the point is i'd like a way that can give us as much - information as possible when the problem happens - the stack trace being the most useful imo - do you face issues currently with backtrace()? - not tried yet - i guess i could make the application trap in the kernel, and fault - there, so we can attach gdb while still in the pager address space :> - that would imply the need for interactivity when the fault - happens, wouldn't it? - no - it would remain this way until someone comes, hours, days later - pinotree: well ok, it would require interactivity, but not *when* - it happens ;p - pinotree: right, it needs -rdynamic - - -## IRC, freenode, #hurd, 2012-07-21 - - tschwinge: my current "approach" is to introduce an infinite loop - it makes the faulting task mapped in often enough to use gdb - through qemu - ... :) - My understanding is that glibc already does have some mechanism - for that: I have seen it print backtraces whendetecting malloc - inconsistencies (double free and the lite). - yes, i thought it used the backtrace functions internally though - that is, execinfo - but this does require -rdynamic - - -# GCC's libbacktrace - -Introduced in GCC commit ecd3459e7bb829202601e3274411135a15c64dde. -- cgit v1.2.3