Package: pbzip2
Version: 1.1.5-1
Severity: normal
How to reproduce:
$ echo TEST | bzip2 >test.bz2
$ (head -c$(($(cat test.bz2|wc -c)-4)) test.bz2 && echo BAD) >bad.bz2
$ ls -l bad*
-rw-r--r-- 1 aaa bbb 45 08-20 13:40 bad.bz2
$ bzip2 -d bad.bz2
bzip2: Data integrity error when decompressing.
Input file = bad.bz2, output file = bad
It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.
You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.
bzip2: Deleting output file bad, if it exists.
$ ls -l bad*
-rw-r--r-- 1 aaa bbb 45 08-20 13:40 bad.bz2
$ pbzip2 -d bad.bz2
pbzip2: *ERROR: Data integrity (CRC) error in data! Skipping...
$ ls -l bad*
-rw-r--r-- 1 aaa bbb 0 08-20 13:40 bad
Here we can see a valid bzip2 file (test.bz2) is created and then it's last 4
bytes (stream CRC) are clobbered and the resulting bzip2 file with invalid CRC
is stored in "bad.bz2".
When pbzip2 attemps to decompress "bad.bz2", it creates an empty output file
"bad". Upon exit, the input file "bad.bz2" is removed even though decompression
failed. Data stored in "bad.bz2" is lost.
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.39-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=pl_PL.utf8, LC_CTYPE=pl_PL.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages pbzip2 depends on:
ii libbz2-1.0 1.0.5-6 high-quality block-sorting file co
ii libc6 2.13-16 Embedded GNU C Library: Shared lib
ii libgcc1 1:4.6.1-7 GCC support library
ii libstdc++6 4.6.1-7 GNU Standard C++ Library v3
pbzip2 recommends no packages.
pbzip2 suggests no packages.
-- no debconf information
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