On 07/08/2011 12:32 PM, Michał Piotrowski wrote:

W dniu 8 lipca 2011 18:21 użytkownik Michał Piotrowski
<mkkp4x4@gmail.com> napisał:


Hi,

2011/7/8 Andreas Schwab <schwab@redhat.com>:


Use valgrind.



I attach valgrind output.

==1312== 1 errors in context 1 of 116:
==1312== Source and destination overlap in memcpy(0xaef1590, 0xaef1593, 76)
==1312== Â* Â*at 0x4C283B6: memcpy@@GLIBC_2.14 (mc_replace_strmem.c:653)
==1312== Â* Â*by 0x401835: ??? (in /sbin/mount.ecryptfs)
==1312== Â* Â*by 0x5E3039C: (below main) (in /lib64/libc-2.14.so)



I installed ecryptfs-utils-debuginfo package and now it's more readable

==1815== 1 errors in context 1 of 116:
==1815== Source and destination overlap in memcpy(0xaef1590, 0xaef1593, 76)
==1815== at 0x4C283B6: memcpy@@GLIBC_2.14 (mc_replace_strmem.c:653)
==1815== by 0x401835: main (string3.h:52)




So it does appear to be related to the memcpy change in libc.





Could this be related to
Â*- Fix static linking with checking x86/x86-64 memcpy (BZ#12653)
or is it an eCryptfs problem?




Andreas.

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On 07/08/2011 01:19 PM, Michał Piotrowski wrote:

2011/7/8 Jakub Jelinek <jakub@redhat.com>:


On Fri, Jul 08, 2011 at 01:12:04PM -0400, Steve Clark wrote:


So it does appear to be related to the memcpy change in libc.



So eCryptfs is buggy, just fix it.
The compatibility stuff that has been added to glibc to workaround
buggy old programs was just for programs linked against old glibc.
If you compile it again and you want it still working, fix it.
It isn't that hard.



I'll try tomorrow, I hope it is obvious bug.



memove should be used if areas overlap that are being copied.




Â* Â* Â* Â*Jakub
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