reassign 729941 liblzma5 thanks Hallo Adam, * Adam Borowski [Fri, Nov 22 2013, 12:20:59AM]: > On Tue, Nov 19, 2013 at 12:28:53PM +0100, Eduard Bloch wrote: > > Could you also turn up debug= value to 7 and send me your logs after a > > couple of days? > > Attached. This comes without a manual intervention since nuking the cache > on Tuesday. This time, the failures include experimental/main/binary-armhf > in addition to experimental/non-free/binary-amd64 (I got amd64, i386 and > armhf installs at home).
Thanks. After all, I was able to reproduce it on my system with the
current version of the mentioned Packages.xz file and... it turned out
to be a weird behaviour of
ii liblzma5:amd64 5.1.1alpha+2 amd64 XZ-format compression library
Apparently, on the last cycle of lzma_code(&strm, LZMA_RUN) it does not
return LZMA_STREAM_END but LZMA_OK although the strm.avail_in value
is zero which means that there is no more data to be expected. I am not
sure why the problem occurs on exactly this file but I can reproduce it
(for reproduction: sample code below, to be used with an output buffer
of 20000 bytes size, the FLAG_* constants are internal flag bits, just
ignore).
The problematic file is also attached. I will a workaround for now to
apt-cacher-ng.
Regards,
Eduard.
#ifdef HAVE_LZMA
#include <lzma.h>
class tXzDec : public IDecompressor
{
lzma_stream strm;
public:
tXzDec(bool lzmaFormat=false)
{
::memset(&strm, 0, sizeof(strm));
if(lzmaFormat)
inited = (LZMA_OK == lzma_alone_decoder(&strm,
EXTREME_MEMORY_SAVING ? 32000000 :
MAX_VAL(uint64_t)));
else
inited = (LZMA_OK == lzma_stream_decoder(&strm,
EXTREME_MEMORY_SAVING ? 32000000 :
MAX_VAL(uint64_t),
LZMA_TELL_UNSUPPORTED_CHECK |
LZMA_CONCATENATED));
}
~tXzDec()
{
lzma_end(&strm);
inited = false;
}
virtual UINT UncompMore(char *szInBuf, size_t nBufSize, size_t
&nBufPos, acbuf &UncompBuf)
{
strm.next_in = (uint8_t*) szInBuf + nBufPos;
strm.avail_in = nBufSize - nBufPos;
strm.next_out = (uint8_t*) UncompBuf.wptr();
strm.avail_out = UncompBuf.freecapa();
lzma_ret ret=lzma_code(&strm, LZMA_RUN);
if (ret == LZMA_STREAM_END || ret == LZMA_OK)
{
nBufPos = nBufSize - strm.avail_in;
if(!strm.avail_in)
ret == LZMA_STREAM_END; // looks like liblzma
bug, working around
unsigned int nGotBytes = UncompBuf.freecapa() -
strm.avail_out;
UncompBuf.got(nGotBytes);
return ret == LZMA_STREAM_END ? FLAG_COMPEOF : 0;
}
// or corrupted data?
return (FLAG_COMPEOF | FLAG_ERROR);
}
};
#end
Packages.xz
Description: Binary data
