service_solahart_jakarta_selatan__082122541663/locking_issues.mdwn


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

[[!meta copyright="Copyright © 2011, 2012, 2013 Free Software Foundation,
Inc."]]

[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]

[[!tag open_issue_hurd]]

There are locking issues in the Hurd's libraries.

[[!toc]]


# Original [[community/GSoC]] Task Description

[[!inline pages=community/gsoc/project_ideas/libdiskfs_locking feeds=no]]


# ext2fs Deadlock

[[service_solahart_jakarta_selatan__082122541663/ext2fs_deadlock]].


# Formal Verification

Methods of [[service_solahart_jakarta_selatan__082122541663/formal_verification]] should be applied to get an understanding of
the behavior of the locking logic.  There are tools for formal
verification/[[service_solahart_jakarta_selatan__082122541663/code_analysis]] that can likely help here.

There is a [[!FF_project 278]][[!tag bounty]] on this task.


# IRC, OFTC, #debian-hurd, 2012-12-15

    <Steap> youpi: can you think of a locking error recently fixed in the
      translators ? I'd like to try a Coccinelle script on a real-world example
    <youpi> 0b6286a3c5eb86e3cca72d0840fc009855e4fba5 for instance
    <youpi> or a60414ee7fdabb2bdfb17fe82b9a09f811bd2de0
    <youpi> or b8082aab5049f753abd720a5ef6a113e2acef911
    <Steap> thx, I think I might have caught a few double unlocks, I'll send
      patches/bug reports this week-end

[[!message-id "1355701890-29227-1-git-send-email-tipecaml@gmail.com"]].