924036 - crash in mozilla::DOMCameraPreview::Start

Status: RESOLVED WORKSFORME

(Firefox OS Graveyard :: Gaia::Camera, defect)

Description

[bhargavg1]

Attachment: 6eb57208-387d-f2f3-2ba10252-397e11d7.txt

When the following tests are run continuously overnight

Call -> Camera -> Camcorder -> Video -> Music -> Airplance

seeing a crash in mozilla::DOMCameraPreview::Start

BuildID: 20130930193354 
Version: 26.0a2

Comment 1

[Jason Smith [:jsmith]]

Example Socorro crash report - https://crash-stats.mozilla.com/report/index/07986ff3-c3a7-44f4-a75e-3cc9d2131004.

Other Example Reports:

https://crash-stats.mozilla.com/report/list?product=B2G&query_search=signature&query_type=contains&reason_type=contains&date=2013-10-07&range_value=28&range_unit=days&hang_type=any&process_type=any&signature=mozilla%3A%3ADOMCameraPreview%3A%3AStart

Comment 2

[Mike Habicher [:mikeh] (high bugzilla latency)]

Can you attach a logcat, please?

Comment 3

[Mike Habicher [:mikeh] (high bugzilla latency)]

(In reply to Jason Smith [:jsmith] from comment #1)
>
> Example Socorro crash report -
> https://crash-stats.mozilla.com/report/index/07986ff3-c3a7-44f4-a75e-
> 3cc9d2131004.

Comment 0 says 26.0a2, but the crash reports above say 18.0.

Comment 4

[bhargavg1]

the file is too huge as the logs are from overnight run. Shared the logs 

https://docs.google.com/file/d/0B0zTAnPOpx-xcnJaWFJLV0NaaEU/edit?usp=sharing

Comment 5

[Mike Habicher [:mikeh] (high bugzilla latency)]

(In reply to bhargavg1 from comment #0)
>
> When the following tests are run continuously overnight
> 
> Call -> Camera -> Camcorder -> Video -> Music -> Airplance
> 
> seeing a crash in mozilla::DOMCameraPreview::Start

This looks identical to the crash in bug 924039 -- my 1st-order guess is heap corruption. To clarify, please confirm that the STR are:
1. open the Phone app
2. make a phone call
3. while the phone call is active, switch to the Homescreen and launch the Camera app
4. switch the Camera app to Video mode (and start recording a video?)
5. switch to the Homescreen and launch the Music app
6. switch to the Homescreen and "Airplance" (I don't know what this is--Airplane Mode?)

Comment 6

[Mike Habicher [:mikeh] (high bugzilla latency)]

I looked through the logcat and don't see anything obviously wrong. The only SIGs in the log are SIGTERMs,received by dnsmasq:

44363:10-03 15:25:35.879  3247  3247 I dnsmasq : exiting on receipt of SIGTERM
  ...
6772074:10-03 19:36:13.049 14058 14058 I dnsmasq : exiting on receipt of SIGTERM

Comment 7

[bhargavg1]

(In reply to Mike Habicher [:mikeh] from comment #5)
> (In reply to bhargavg1 from comment #0)
> >
> > When the following tests are run continuously overnight
> > 
> > Call -> Camera -> Camcorder -> Video -> Music -> Airplance
> > 
> > seeing a crash in mozilla::DOMCameraPreview::Start
> 
> This looks identical to the crash in bug 924039 -- my 1st-order guess is
> heap corruption. To clarify, please confirm that the STR are:
> 1. open the Phone app
> 2. make a phone call
> 3. while the phone call is active, switch to the Homescreen and launch the
> Camera app
> 4. switch the Camera app to Video mode (and start recording a video?)
> 5. switch to the Homescreen and launch the Music app
> 6. switch to the Homescreen and "Airplance" (I don't know what this
> is--Airplane Mode?)

Airplane mode is where all the radios are turned off. Need to check with the test team for exact test procedure

bug 924039 has also similar test case running when the crash happened

Comment 8

[bhargavg1]

(In reply to Mike Habicher [:mikeh] from comment #5)
> (In reply to bhargavg1 from comment #0)
> >
> > When the following tests are run continuously overnight
> > 
> > Call -> Camera -> Camcorder -> Video -> Music -> Airplance
> > 
> > seeing a crash in mozilla::DOMCameraPreview::Start
> 
> This looks identical to the crash in bug 924039 -- my 1st-order guess is
> heap corruption. To clarify, please confirm that the STR are:
> 1. open the Phone app
> 2. make a phone call
> 3. while the phone call is active, switch to the Homescreen and launch the
> Camera app
> 4. switch the Camera app to Video mode (and start recording a video?)
> 5. switch to the Homescreen and launch the Music app
> 6. switch to the Homescreen and "Airplance" (I don't know what this
> is--Airplane Mode?)

The test procedure being followed,

1. Make call and end the call -
2. Open camera and take pictures. (Take for 5 snapshots, will vary this number usually, it will be between 5 to 10)
3. Open camcorder and record videos.
4. Open music and play music.
5. Now open video and play video.

Steps from 1 -> 5 run continuously overnight

Comment 9

[Mike Habicher [:mikeh] (high bugzilla latency)]

(In reply to bhargavg1 from comment #8)
> 
> 1. Make call and end the call -
> 2. Open camera and take pictures. (Take for 5 snapshots, will vary this
> number usually, it will be between 5 to 10)
> 3. Open camcorder and record videos.
> 4. Open music and play music.
> 5. Now open video and play video.
> 
> Steps from 1 -> 5 run continuously overnight

Can you whittle that down to a minimal set of STR? i.e. does it happen if you just repeat steps 2 and 3?

Comment 10

[Mike Habicher [:mikeh] (high bugzilla latency)]

I'm pretty sure this isn't a Gaia bug. My first-pass guess is memory corruption, or a double-free. (And I'm pretty sure bug 924039 is a dupe.)

Comment 11

[Preeti Raghunath(:Preeti)]

QA,

Once we get a patch for bug 924039 please check if this bug has been fixed as well.

Comment 12

[Jason Smith [:jsmith]]

(In reply to Preeti Raghunath(:Preeti) from comment #11)
> QA,
> 
> Once we get a patch for bug 924039 please check if this bug has been fixed
> as well.

I think it's too early to flag that. The other bug doesn't have a patch yet. If mikeh is sure this is a dupe, then let's flag it as such.

Comment 13

[Mike Habicher [:mikeh] (high bugzilla latency)]

Giving in (for now); this is very-likely not a Gaia bug, but Gaia::Camera matches current queries.

Comment 14

[Preeti Raghunath(:Preeti)]

Mike,

Assigning this bug to you since you were actively working on it.

Comment 15

[Mike Habicher [:mikeh] (high bugzilla latency)]

Can I get a koi+ on this one too, please?

Comment 16

[Preeti Raghunath(:Preeti)]

jst,

Please take a look for expertise

Comment 17

[bhargavg1]

Dont see this happening any of the latest AUs

Comment 18

[Johnny Stenback (:jst)]

Clearing needinfo as this is apparently not an issue any more. If it is, please request needinfo again.