Bug#621786: mdadm: invalid pointer or memory corruption on armel system

[Arnaud Desmier]

Hi Martin,

I've made the following changes before compiling the debian package 
version (not the one build from git repository):
debian/rules:
  - change declaration of CXFLAGS to CXFLAGS = -ggdb -DDEBUG -g

Before building package:
  - export DEB_BUILD_OPTIONS="noopt"

Starting build of package:
  - dpkg-buildpackage

Installing package (3.1.4.1 is my current version from git used as 
workaround):
     # dpkg -i ../mdadm_3.1.4-1+8efb9d1_armel.deb
     dpkg: warning: downgrading mdadm from 3.1.4.1-0 to 3.1.4-1+8efb9d1.
     (Reading database ... 35477 files and directories currently 
installed.)
     Preparing to replace mdadm 3.1.4.1-0 (using 
.../mdadm_3.1.4-1+8efb9d1_armel.deb) ...
     Stopping MD monitoring service: mdadm --monitor.
     Unpacking replacement mdadm ...
     Setting up mdadm (3.1.4-1+8efb9d1) ...
     Generating array device nodes... done.
     update-initramfs: deferring update (trigger activated)
     Starting MD monitoring service: mdadm --monitor.
     *** glibc detected *** /sbin/mdadm: munmap_chunk(): invalid 
pointer: 0x000a9800 ***
     *** glibc detected *** /sbin/mdadm: malloc(): memory corruption: 
0x000a9660 ***
     Aborted
     Generating udev events for MD arrays...done.
     Processing triggers for man-db ...
     Processing triggers for initramfs-tools ...
     update-initramfs: Generating /boot/initrd.img-2.6.32-5-orion5x
     Generating kernel u-boot image... done.
     Flashing kernel... done.
     Flashing initramfs... done.


/etc/init.d/mdadm-raid restart
     *** glibc detected *** /sbin/mdadm: munmap_chunk(): invalid 
pointer: 0x000a9800 ***
     *** glibc detected *** /sbin/mdadm: malloc(): memory corruption: 
0x000a9660 ***
     Aborted
     Generating udev events for MD arrays...done.

/etc/init.d/mdadm restart
Stopping MD monitoring service: mdadm --monitor.
Starting MD monitoring service: mdadm --monitor.

How can I get the stack trace as you requested?

Thanks,

Arnaud

Le 09/04/2011 08:32, martin f krafft a écrit :
> tags 621786 moreinfo
> thanks
>
>> /etc/init.d/mdadm-raid restart
>> *** glibc detected *** /sbin/mdadm: munmap_chunk(): invalid pointer: 0x00084800 ***
>> *** glibc detected *** /sbin/mdadm: malloc(): memory corruption: 0x00084660 ***
>> Aborted
> Please compile mdadm with debug symbols and get a stack trace of the
> alleged double-free.
>
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