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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-02 17:45:11 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-02 17:45:11 -0400
commita9586d9be812be4a0046ad4d312b013e587607cb (patch)
tree5bddd06a10a97c88c836e88e57dcc2d7005356c0
parenta8bdf745126593308927dfa264d3d2158338a148 (diff)
parentb7ca36ae3bdd1d8e336ee76f06d7aa4b0af84959 (diff)
Merge tag 'for-linus-docs-2012-05-02' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci
Pull ReportingBugs rewrite from Sarah Sharp: "Here are the updates to ReportingBugs that were discussed and acked a couple weeks ago. I've updated the fifth patch with your ack, as requested" * tag 'for-linus-docs-2012-05-02' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci: Docs: Move ref to Frohwalt Egerer to end of REPORTING-BUGS Docs: Add a tips section to REPORTING-BUGS. Docs: Expectations for bug reporters and maintainers Docs: Add info on supported kernels to REPORTING-BUGS. Docs: Add "Gather info" section to REPORTING-BUGS. Docs: Step-by-step directions for reporting bugs. Trivial: docs: Remove six-space indentation in REPORTING-BUGS.
-rw-r--r--REPORTING-BUGS162
1 files changed, 134 insertions, 28 deletions
diff --git a/REPORTING-BUGS b/REPORTING-BUGS
index 55a6074ccbb7..0cb8cdfa63bc 100644
--- a/REPORTING-BUGS
+++ b/REPORTING-BUGS
@@ -1,39 +1,103 @@
1[Some of this is taken from Frohwalt Egerer's original linux-kernel FAQ] 1Background
2==========
2 3
3 What follows is a suggested procedure for reporting Linux bugs. You 4The upstream Linux kernel maintainers only fix bugs for specific kernel
4aren't obliged to use the bug reporting format, it is provided as a guide 5versions. Those versions include the current "release candidate" (or -rc)
5to the kind of information that can be useful to developers - no more. 6kernel, any "stable" kernel versions, and any "long term" kernels.
6 7
7 If the failure includes an "OOPS:" type message in your log or on 8Please see https://www.kernel.org/ for a list of supported kernels. Any
8screen please read "Documentation/oops-tracing.txt" before posting your 9kernel marked with [EOL] is "end of life" and will not have any fixes
9bug report. This explains what you should do with the "Oops" information 10backported to it.
10to make it useful to the recipient. 11
12If you've found a bug on a kernel version isn't listed on kernel.org,
13contact your Linux distribution or embedded vendor for support.
14Alternatively, you can attempt to run one of the supported stable or -rc
15kernels, and see if you can reproduce the bug on that. It's preferable
16to reproduce the bug on the latest -rc kernel.
17
18
19How to report Linux kernel bugs
20===============================
21
22
23Identify the problematic subsystem
24----------------------------------
25
26Identifying which part of the Linux kernel might be causing your issue
27increases your chances of getting your bug fixed. Simply posting to the
28generic linux-kernel mailing list (LKML) may cause your bug report to be
29lost in the noise of a mailing list that gets 1000+ emails a day.
11 30
12 Send the output to the maintainer of the kernel area that seems to 31Instead, try to figure out which kernel subsystem is causing the issue,
13be involved with the problem, and cc the relevant mailing list. Don't 32and email that subsystem's maintainer and mailing list. If the subsystem
14worry too much about getting the wrong person. If you are unsure send it 33maintainer doesn't answer, then expand your scope to mailing lists like
15to the person responsible for the code relevant to what you were doing. 34LKML.
16If it occurs repeatably try and describe how to recreate it. That is 35
17worth even more than the oops itself. The list of maintainers and 36
18mailing lists is in the MAINTAINERS file in this directory. If you 37Identify who to notify
19know the file name that causes the problem you can use the following 38----------------------
20command in this directory to find some of the maintainers of that file: 39
40Once you know the subsystem that is causing the issue, you should send a
41bug report. Some maintainers prefer bugs to be reported via bugzilla
42(https://bugzilla.kernel.org), while others prefer that bugs be reported
43via the subsystem mailing list.
44
45To find out where to send an emailed bug report, find your subsystem or
46device driver in the MAINTAINERS file. Search in the file for relevant
47entries, and send your bug report to the person(s) listed in the "M:"
48lines, making sure to Cc the mailing list(s) in the "L:" lines. When the
49maintainer replies to you, make sure to 'Reply-all' in order to keep the
50public mailing list(s) in the email thread.
51
52If you know which driver is causing issues, you can pass one of the driver
53files to the get_maintainer.pl script:
21 perl scripts/get_maintainer.pl -f <filename> 54 perl scripts/get_maintainer.pl -f <filename>
22 55
23 If it is a security bug, please copy the Security Contact listed 56If it is a security bug, please copy the Security Contact listed in the
24in the MAINTAINERS file. They can help coordinate bugfix and disclosure. 57MAINTAINERS file. They can help coordinate bugfix and disclosure. See
25See Documentation/SecurityBugs for more information. 58Documentation/SecurityBugs for more information.
59
60If you can't figure out which subsystem caused the issue, you should file
61a bug in kernel.org bugzilla and send email to
62linux-kernel@vger.kernel.org, referencing the bugzilla URL. (For more
63information on the linux-kernel mailing list see
64http://www.tux.org/lkml/).
65
66
67Tips for reporting bugs
68-----------------------
69
70If you haven't reported a bug before, please read:
26 71
27 If you are totally stumped as to whom to send the report, send it to 72http://www.chiark.greenend.org.uk/~sgtatham/bugs.html
28linux-kernel@vger.kernel.org. (For more information on the linux-kernel 73http://www.catb.org/esr/faqs/smart-questions.html
29mailing list see http://www.tux.org/lkml/).
30 74
31This is a suggested format for a bug report sent to the Linux kernel mailing 75It's REALLY important to report bugs that seem unrelated as separate email
32list. Having a standardized bug report form makes it easier for you not to 76threads or separate bugzilla entries. If you report several unrelated
77bugs at once, it's difficult for maintainers to tease apart the relevant
78data.
79
80
81Gather information
82------------------
83
84The most important information in a bug report is how to reproduce the
85bug. This includes system information, and (most importantly)
86step-by-step instructions for how a user can trigger the bug.
87
88If the failure includes an "OOPS:", take a picture of the screen, capture
89a netconsole trace, or type the message from your screen into the bug
90report. Please read "Documentation/oops-tracing.txt" before posting your
91bug report. This explains what you should do with the "Oops" information
92to make it useful to the recipient.
93
94This is a suggested format for a bug report sent via email or bugzilla.
95Having a standardized bug report form makes it easier for you not to
33overlook things, and easier for the developers to find the pieces of 96overlook things, and easier for the developers to find the pieces of
34information they're really interested in. Don't feel you have to follow it. 97information they're really interested in. If some information is not
98relevant to your bug, feel free to exclude it.
35 99
36 First run the ver_linux script included as scripts/ver_linux, which 100First run the ver_linux script included as scripts/ver_linux, which
37reports the version of some important subsystems. Run this script with 101reports the version of some important subsystems. Run this script with
38the command "sh scripts/ver_linux". 102the command "sh scripts/ver_linux".
39 103
@@ -65,4 +129,46 @@ summary from [1.]>" for easy identification by the developers.
65[X.] Other notes, patches, fixes, workarounds: 129[X.] Other notes, patches, fixes, workarounds:
66 130
67 131
68Thank you 132Follow up
133=========
134
135Expectations for bug reporters
136------------------------------
137
138Linux kernel maintainers expect bug reporters to be able to follow up on
139bug reports. That may include running new tests, applying patches,
140recompiling your kernel, and/or re-triggering your bug. The most
141frustrating thing for maintainers is for someone to report a bug, and then
142never follow up on a request to try out a fix.
143
144That said, it's still useful for a kernel maintainer to know a bug exists
145on a supported kernel, even if you can't follow up with retests. Follow
146up reports, such as replying to the email thread with "I tried the latest
147kernel and I can't reproduce my bug anymore" are also helpful, because
148maintainers have to assume silence means things are still broken.
149
150Expectations for kernel maintainers
151-----------------------------------
152
153Linux kernel maintainers are busy, overworked human beings. Some times
154they may not be able to address your bug in a day, a week, or two weeks.
155If they don't answer your email, they may be on vacation, or at a Linux
156conference. Check the conference schedule at LWN.net for more info:
157 https://lwn.net/Calendar/
158
159In general, kernel maintainers take 1 to 5 business days to respond to
160bugs. The majority of kernel maintainers are employed to work on the
161kernel, and they may not work on the weekends. Maintainers are scattered
162around the world, and they may not work in your time zone. Unless you
163have a high priority bug, please wait at least a week after the first bug
164report before sending the maintainer a reminder email.
165
166The exceptions to this rule are regressions, kernel crashes, security holes,
167or userspace breakage caused by new kernel behavior. Those bugs should be
168addressed by the maintainers ASAP. If you suspect a maintainer is not
169responding to these types of bugs in a timely manner (especially during a
170merge window), escalate the bug to LKML and Linus Torvalds.
171
172Thank you!
173
174[Some of this is taken from Frohwalt Egerer's original linux-kernel FAQ]