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Bug 1415081 - cpio fails with checksum error larger files >~200M
cpio fails with checksum error larger files >~200M
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: cpio (Show other bugs)
7.3
Unspecified Unspecified
urgent Severity medium
: rc
: 7.4
Assigned To: Pavel Raiskup
Vaclav Danek
: EasyFix, FastFix, Patch, Reproducer, ZStream
Depends On: 1001965
Blocks: 1420851 1483571
  Show dependency tree / graph
 
Reported: 2017-01-20 02:59 EST by Steffen Froemer
Modified: 2018-04-10 06:07 EDT (History)
12 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Cause: Cpio's crc checksum algorithm works with improperly casted or badly sized integers. Consequence: Even though the cpio utility extracts the files from "crc" archives (concrete cpio archive format) correctly, it fails if the archive contains files larger than 200MB and prints warning that the CRC of extracted file is not correct. Fix: Using integer type of proper size. Result: Cpio now extracts files larger than 200MB from 'crc' archives without complaining.
Story Points: ---
Clone Of: 1001965
: 1483571 (view as bug list)
Environment:
Last Closed: 2018-04-10 06:07:29 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 2882681 None None None 2017-01-20 03:38 EST
Red Hat Product Errata RHBA-2018:0693 None None None 2018-04-10 06:07 EDT

  None (edit)
Description Steffen Froemer 2017-01-20 02:59:21 EST 
+++ This bug was initially created as a clone of Bug #1001965 +++

Description of problem:
cpio with crc format fails to verfy chjecksums and also can't extract the files.
This happens with files > ~200M (didn't see it with smaller ones).

Version-Release number of selected component (if applicable):
Version     : 2.11
Release     : 24.el7
Architecture: x86_64

How reproducible:
Always

Steps to Reproduce:
1. Run:
dd if=/dev/urandom of=rand bs=1M count=300
echo rand | cpio --create --format=crc --verbose > rand.cpio
cpio --extract --only-verify-crc < rand.cpio

Actual results:
cpio fails with checksum error:
rand
614401 blocks
cpio: rand: checksum error (0x9568bd204, should be 0x568bd204)
614401 blocks


Expected results:
cpio doesn't get a checksum error

Additional info:
This issue does not exist in F24.

Name        : cpio
Version     : 2.12
Release     : 3.fc24
Architecture: x86_64


Following commit is missing in the RHEL version:

* Mo Sep 30 2013 Pavel Raiskup <praiskup@redhat.com> - 2.11-24
- properly trim "crc" checksum to 32 bits (#1001965)           <=====
- remove unneeded patch for config.gues/config.sub (#951442)
- allow treat read() errors (#996150)
Comment 15 errata-xmlrpc 2018-04-10 06:07:29 EDT 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:0693
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