[Lmuse-developer] [ lmuse-Bugs-2819312 ] 1.0rc3 malloc problem w/glibc-2.10 on x86_64 (with fix)

[SourceForge.net <no...@so...>]

Bugs item #2819312, was opened at 2009-07-10 01:10
Message generated for change (Settings changed) made by spamatica
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=604222&aid=2819312&group_id=93414

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Gerardo Exequiel Pozzi (djgera)
Assigned to: Nobody/Anonymous (nobody)
Summary: 1.0rc3 malloc problem w/glibc-2.10 on x86_64 (with fix)

Initial Comment:
Running muse 0.9 or 1.0rc3 on x86_64 with glibc 2.10.1 triggers this memory allocation error:

$ muse
muse: malloc.c:3074: sYSMALLOc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask) == 0)' failed.
Aborted

Running with MALLOC_CHECK_=1 solves the problem showing errors about free().

I compiled with debug symbols and running under gdb to locate the error. I created a simple patch, that solves the problem, but maybe can be wrong (please check it), just add +2 bytes in 'esize' Pool::grow @ memory.cpp

Take care.


----------------------------------------------------------------------

Comment By: Robert Jonsson (spamatica)
Date: 2009-07-15 23:12

Message:
Right, the fix is probably not optimal. I'm going to add it with clear
comments as to it's origins.


----------------------------------------------------------------------

Comment By: Orcan Ogetbil (ogetbilo)
Date: 2009-07-14 22:07

Message:
I confirm the error. This stops muse staritng with glibc-2.10 on x86_64.
glibc-2.9, on the other hand, doesn't have this problem.

With the attached patch, muse starts with glibc-2.10 on x86_64. But I am
not sure either if it is a correct fix.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=604222&aid=2819312&group_id=93414