BMO/UserGuide/BugFields

Bugzilla Field Descriptions

Alias

A short, unique name assigned to a bug in order to assist with looking it up and referring to it in other places in Bugzilla.

Assignee

This is the person in charge of resolving the bug. Every time this field changes, the status changes to NEW to make it easy to see which new bugs have appeared on a person's list.

Blocks

This bug must be resolved before the bugs listed in this field can be resolved.

Bug ID

The numeric id of a bug, unique within this entire installation of Bugzilla.

CC

Users who may not have a direct role to play on this bug, but who are interested in its progress.

Changed

When this bug was last updated.

Classification

Bugs are categorised into Classifications, Products and Components. classifications is the top-level categorization.

Comment

Bugs have comments added to them by Bugzilla users. You can search for some text in those comments.

Comment Tag

Comments can have arbitrary tags added to them to help with filtering as well as mark comments as spam or abusive.

Component

Components are second-level categories; each belongs to a particular Product. Select a Product to narrow down this list.

Creation date

When the bug was filed.

Depends on

The bugs listed here must be resolved before this bug can be resolved.

Duplicates

List of bugs that have been marked a duplicate of the bug currently being viewed.

Keywords

Keywords are a controlled vocabulary for characterizing bugs across Products and Components. Examples of this field are regression, sec-high, and topcrash. Bugzilla administrators manage the list of keywords. If you believe you need a new keyword, please contact the administrators to discuss.

Mentors

Mentors are users who have offered to help the bug owner with such tasks as setting up a development environment, finding relevant information to fixing the bug, how to submit a patch for review, and finally how to get the fix committed.

Needinfo

More information has been requested from specific individuals, or anyone, to move the bug forward to completion.

OS

This is the operating system against which the bug was reported.

Platform

This is the hardware platform against which the bug was reported (ARM, ARM64, x86, x86_64, etc).

Priority

Priority	Description
--	No decision
P1	Fix in the current release cycle
P2	Fix in the next release cycle or the following (nightly + 1 or nightly + 2)
P3	Backlog
P4	Do not use. This priority is for the Web Platform Test bot.
P5	Will not fix, but will accept a patch

This field describes the importance and order in which a bug should be fixed compared to other bugs. This field is utilized by the programmers/engineers/release managers/managers to prioritize the work to be done. See the Firefox triage documentation and priority definitions, or for the main Bugzilla project, Bugzilla:Priority_System.

Product

Bugs are categorised into Products and Components. Select a Classification to narrow down this list.

QA Contact

The person responsible for confirming this bug if it is unconfirmed, and for verifying the fix once the bug has been resolved.

Rank

Used by some groups to provide finer-grained ordering for working on bugs than afforded by the Priority field. Use of this field is restricted to the `rank-setters` group.

Regressed by

This bug has been introduced by the bugs listed here.

Regressions

This bug has introduced the bugs listed here.

Reporter

The person who filed this bug.

See Also

This allows you to refer to bugs in other bug tracker installations. You can enter a URL to a bug in the 'Add Bug URLs' field to note that that bug is related to this one. You can enter multiple URLs at once by separating them with a comma. You should normally use this field to refer to bugs in other bug tracker installations, or bugs which are related to, but not known to be duplicates of the bug. Bugs which are regressions should be listed in the Regressed by field (above)

Severity

This field describes the impact of a bug. This field is utilized by the programmers/engineers/release managers/managers to determine the severity of issues and used as input for the priority of the bug. It should not be set by people filing bugs. See the Firefox triage documentation and severity documentation.

Severity	Description
--	Default value for new bugs; bug triagers for components (ie engineers and other core project folks) are expected to update the bug's severity from this value. To avoid them missing new bugs for triage, do not alter this default when filing bugs.
S1	(Catastrophic) Blocks development/testing, may impact more than 25% of users, causes data loss, likely dot release driver, and no workaround available
S2	(Serious) Major functionality/product severely impaired or a high impact issue and a satisfactory workaround does not exist
S3	(Normal) Blocks non-critical functionality or a work around exists
S4	(Small/Trivial) minor significance, cosmetic issues, low or no impact to users
N/A	(Not Applicable) The above definitions do not apply to this bug; this value is reserved for bugs of type Task or Enhancement

Summary

The bug summary is a short sentence which succinctly describes what the bug is about.

Target Milestone

For Firefox-related bugs, when a change set (patch) lands in Mozilla-Central, the sheriffs will set this field to the corresponding release value for the current Nightly.

Release status and tracking flags are used to mark intentions for when a fix or other patch should land.

If you need to track a bug against a set of milestones other than upcoming versions of Firefox, please tell the Bugzilla team, you may want a custom status flag.

Triage Owner

User that is responsible for triaging bugs in a specific component.

Type

This field describes the type of a bug.

Type	Description
defect	regression, crash, hang, security vulnerability and any other general issue.
enhancement	new feature, improvement in UI, performance, etc. and any other request for user-facing changes and enhancements in the product; not engineering changes
task	refactoring, removal, replacement, enabling or disabling of functionality and any other engineering task

URL

Bugs can have a URL associated with them - for example, a pointer to a web site where the problem is seen.

Version

The version field defines the version of the software the bug was found in.

Votes

Some bugs can be voted for, and you can limit your search to bugs with more than a certain number of votes. Votes are not used by Mozilla developers to set priorities.

Whiteboard

Each bug has a free-form single line text entry box for adding tags and status information