[parsec-users] Seg Fault in DEDUP - PARSEC

Akshatha mulki Bhat fdm546 at my.utsa.edu
Sat Apr 28 18:17:51 EDT 2012


Hi,

I am using running some lock-free implementations for Dedup Data structures
and after I made those changes I get a Segmentation fault for SHA1_Update
function in the util.c file. Any idea why this set fault started popping up
?
Here is a excerpt of the segfault extracted using gdb's core file:

#0  0x00007f8b2f6b9b90 in ?? ()
   from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#1  0x00007f8b24315bd0 in ?? ()
#2  0x00007f8b2fb91d60 in ?? ()
#3  0x00000000000033aa in ?? ()
#4  0x00007f8b2b4d0b50 in ?? ()
#5  0x00007f8b2b4d0b50 in ?? ()
#6  0x00007f8b2ea46b34 in mcount ()
   from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007f8b2b4d0b60 in ?? ()
#8  0x00007f8b2ea46b34 in mcount ()
   from /lib/x86_64-linux-gnu/libc.so.6
#9  0x00007f8b2b4d0b10 in ?? ()
#10 0x00007f8b04283ac0 in ?? ()
#11 0xde654dc97432366a in ?? ()
#12 0x00007f8b2b4d0b90 in ?? ()
#13 0x0000000000000011 in ?? ()
#14 0x00007f8b2f6b8690 in SHA1_Update ()
   from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
#15 0x00000000004049a9 in Calc_SHA1Sig (
    buf=0xde654dc9dd3533aa <Address 0xde654dc9dd3533aa out of bounds>,
num_bytes=-1761803567, digest=0x7f8b24315f00 "") at util.c:15
#16 0x00000000004065cd in th_sub_ChunkProcess (chunk=...,
---Type <return> to continue, or q <return> to quit---
    thread_id=2) at encoder.c:300
#17 0x0000000000406a5f in ChunkProcess (targs=0x7fff77e76770)
    at encoder.c:498
#18 0x00007f8b2ed08efc in start_thread ()
   from /lib/x86_64-linux-gnu/libpthread.so.0
#19 0x00007f8b2ea4359d in clone ()
   from /lib/x86_64-linux-gnu/libc.so.6
#20 0x0000000000000000 in ?? ()


Please help me with this..

Thanks
Akshatha
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