Description: When the user selects to open a downloaded PDF file, the PDF Viewer intermittently fails to load the content. Repro Steps: 1) Update a Flame to BuildID: 20140908000204. 2) Go to http://apps.irs.gov/app/picklist/list/formsInstructions.html on the Browser app. 3) Select any PDF file. 4) When the file is downloaded, select the notification. 5) Observe the PDF Viewer launches. Actual: The content of the PDF file does not load. Expected: The content of the PDF file loads properly. Flame 2.1 Environmental Variables: Device: Flame 2.1 (319mb) Build ID: p Gaia: a8e4d26555e5713ec6c72270cfd0cfabc096a0d3 Gecko: 746f24f9d21d Version: 34.0a2 Firmware Version: v123 User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0 Repro Frequency: 70% Link to failed test case: https://moztrap.mozilla.org/manage/case/4068/ See attached: logcat, screenshot

This issue DOES reproduce on Flame 2.2(319mb), Flame 2.1(512mb), Open C 2.2, Open C 2.1: Flame 2.2 Environmental Variables: Device: Flame Master (319mb) Build ID: 20140908040204 Gaia: c71fd5d8c9c7cb021c97e5e9fbb29f92b50a084d Gecko: 892768985915 Version: 35.0a1 (Master) Firmware Version: v123 User Agent: Mozilla/5.0 (Mobile; rv:35.0) Gecko/35.0 Firefox/35.0 Flame 2.1 Environmental Variables: Device: Flame 2.1 (512mb) Build ID: 20140908000204 Gaia: a8e4d26555e5713ec6c72270cfd0cfabc096a0d3 Gecko: 746f24f9d21d Version: 34.0a2 Firmware Version: v123 User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0 Open C 2.2 Environmental Variables: Device: Open_C Master Build ID: 20140908040204 Gaia: c71fd5d8c9c7cb021c97e5e9fbb29f92b50a084d Gecko: 892768985915 Version: 35.0a1 (Master) Firmware Version: P821A10V1.0.0B06_LOG_DL User Agent: Mozilla/5.0 (Mobile; rv:35.0) Gecko/35.0 Firefox/35.0 Open C 2.1 Environmental Variables: Device: Open_C 2.1 Build ID: 20140908000204 Gaia: a8e4d26555e5713ec6c72270cfd0cfabc096a0d3 Gecko: 746f24f9d21d Version: 34.0a2 Firmware Version: P821A10V1.0.0B06_LOG_DL User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0 The PDF file does NOT load. Only the PDF View UI is displayed. ===================================================================== This issue does NOT reproduce on Flame 2.0(319mb) and Open C 2.0: Flame 2.0 Environmental Variables: Device: Flame 2.0 (319mb) Build ID: 20140908000202 Gaia: f02a8e4ef0fabeb28593fa660a0a4ca8a5fe67e5 Gecko: 8e46e547f4ad Version: 32.0 (2.0) Firmware Version: v123 User Agent: Mozilla/5.0 (Mobile; rv:32.0) Gecko/32.0 Firefox/32.0 Open_C 2.0 Environmental Variables: Device: Open_C 2.0 Build ID: 20140908000202 Gaia: f02a8e4ef0fabeb28593fa660a0a4ca8a5fe67e5 Gecko: 8e46e547f4ad Version: 32.0 (2.0) Firmware Version: P821A10V1.0.0B06_LOG_DL User Agent: Mozilla/5.0 (Mobile; rv:32.0) Gecko/32.0 Firefox/32.0 The PDF file loads on PDF Viewer properly.

Correction - The correct Build ID in Comment 0: Build ID: 20140908000204

[Blocking Requested - why for this release]: Blocking this because it has a high repro rate, and is a regression. If the PDF does not open within the first couple tries it may seem like the file is corrupted, or the link is broken which is not the case, and is confusing for the end user

Bug 1058288 seems to be the cause of this issue. B2g-inbound Regression Window Last working Environmental Variables: Device: Flame 2.1 BuildID: 20140828131357 Gaia: f41926d70f5824a74deaf7aa69ae9eb3969e6441 Gecko: 4eaaa8ce26af Version: 34.0a1 (2.1) Firmware Version: v123 User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0 First Broken Environmental Variables: Device: Flame 2.1 BuildID: 20140828131855 Gaia: aa14f2ceaa2796aa1437eeaf99dc47cd11940872 Gecko: 8a6f05b854cc Version: 34.0a1 (2.1) Firmware Version: v123 User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0 Last working gaia / First broken gecko - Issue does NOT occur Gaia: f41926d70f5824a74deaf7aa69ae9eb3969e6441 Gecko: 8a6f05b854cc First broken gaia / Last working gecko - Issue DOES occur Gaia: aa14f2ceaa2796aa1437eeaf99dc47cd11940872 Gecko: 4eaaa8ce26af Gaia Pushlog: https://github.com/mozilla-b2g/gaia/compare/f41926d70f5824a74deaf7aa69ae9eb3969e6441...aa14f2ceaa2796aa1437eeaf99dc47cd11940872

broken by Bug 1058288 - can you take a look Diego (NI to you because I could not find the patch author and you did the pull requests)

Triage reviewed, blocking+ because regression.

I had nothing to do with the patch in bug 1058288. I just merged it. It was r+ed by Yury Delendik

If we can't identify the cause of the regression, we should just backout bug 1058288 for now.

As requested by Fabrice I reverted bug 1058288 https://github.com/mozilla-b2g/gaia/commit/34b9c4dd5f2a35effbef02ee9cd9b73573ebac25

QA wanted to verify that the backout fixed the issue on master.

This issue no longer occurs on both 2.2 Flame KK. Results: PDF files load as expected. Environmental Variables: Device: Flame 2.2 BuildID: 20141007054552 Gaia: 9306e431d5b559035d9656902e413816b6ca3c26 Gecko: 25a98bac9264 Version: 35.0a1 (2.2) Firmware Version: L1TC10011800 User Agent: Mozilla/5.0 (Mobile; rv:35.0) Gecko/35.0 Firefox/35.0 This issue still occurs on 2.1 Flame KK. Environmental Variables: Device: Flame 2.1 BuildID: 20141007075118 Gaia: da328c6cbabf2cffc2d362e282cacc93325d1f43 Gecko: aebe54593d60 Version: 34.0a2 (2.1) Firmware Version: L1TC10011800 User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0

Wesley - I regression window was already completed at comment 5 The regressing bug identified in that window was the reverted from Master in comment 10 and verified to fix the issue on Master in comment 13

(In reply to Joshua Mitchell [:Joshua_M] from comment #14) > The regressing bug identified in that window was the reverted from Master in > comment 10 and verified to fix the issue on Master in comment 13 The offending patch was also reverted from 2.1 today. qawanted to verify that it resolves the issue there too.

Fixed via backout of bug 1058288.

(In reply to Dylan Oliver [:doliver] from comment #15) > (In reply to Joshua Mitchell [:Joshua_M] from comment #14) > > The regressing bug identified in that window was the reverted from Master in > > comment 10 and verified to fix the issue on Master in comment 13 > > The offending patch was also reverted from 2.1 today. qawanted to verify > that it resolves the issue there too. Verified FIXED on 2.1 - 3/3 pdf files downloaded opened just fine Device: Flame 2.1 Build ID: 20141015124643 Gaia: 1094fcfd60f03e9498ae21d2af0e23bdbd71f7ad Gecko: 76b4a13e4fc7 Version: 34.0 (2.1) Firmware Version: v184 User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0

(In reply to Diego Marcos [:dmarcos] from comment #8) > I had nothing to do with the patch in bug 1058288. I just merged it. It was > r+ed by Yury Delendik The patch looked fine. I have not ability to test -- no actual device. Updates re-landed in bug 1069157, and it was tested manually by :mai and okay AFAIK.