Crash with "Bus error" when hashing

[Steven Sheehy]

Berlios Bug #13105: Bus error
https://developer.berlios.de/bugs/?func=detailbug&bug_id=13105&group_id=2230

Original Submission:
Just after running linuxdcpp it quits with comment Bus error:

$linuxdcpp
Thrown: FileException: Could not open file
Thrown: FileException: Could not open file
Thrown: FileException: Could not open file
FavoriteManager::load: FileException: Could not open file
Loading: Hash database
Loading: Shared Files
Thrown: FileException: Could not open file
FileException: Could not open file
Loading: Download Queue
Bus error (core dumped)

And a backtrace from gdb

#0 0x08176b29 in TigerHash::update (this=0xb707c080, data=0xb4c86000,
length=1024) at client/TigerHash.cpp:166
#1 0x080c2325 in MerkleTree<TigerHash, 1024u>::update (this=0xb707c314,
data=0xb407a000, len=16777216) at client/MerkleTree.h:105
#2 0x080db6fd in HashManager::Hasher::fastHash (this=0x831b178,
filename=@0xb707c2c4, tth=@0xb707c314, size=730607616, xcrc32=0x0)
at client/HashManager.cpp:629
#3 0x080df84e in HashManager::Hasher::run (this=0x831b178)
at client/HashManager.cpp:716
#4 0x081728cc in Thread::starter (p=0x831b178) at client/Thread.h:137
#5 0xb7f6646b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6 0xb75d96de in clone () from /lib/tls/i686/cmov/libc.so.6

[Steven Sheehy (steven-sheehy)]

I've seen this crash multiple times before. I think it's some type of unaligned access, but I don't know how to fix it. Hopefully someone with more knowledge in this area will submit a patch.

[Steven Sheehy (steven-sheehy)]

See also http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=456370

[Jan Hlodan (wewek)]

I got this error (Bus error) when I enabled compiz (Ubuntu 8.10).
I haven't used compiz before and linuxdc++ ran well.
But now linuxdc++ crashes every time after few minutes. Disabling compiz or deleting ~/.dc++ didn't help.
Any idea how to fix it?
Thank you.