STR: Full flash the build - Go to settings, Date & Time, and change timezone to Atlantic Ocean - disable 'Set time Automatically' - Change time - Change timezone back to 'America' Actual: Screen goes dark, and often it need to be reflashed. Otherwise, the phone reboots itself after 10 minutes or so Expected: Timezone is changed Version Info: Gaia-Rev bcc76f93f5659ac1eb8a769167109fd2d7ca4fbd Gecko-Rev https://hg.mozilla.org/mozilla-central/rev/c1f6345f2803 Build-ID 20150115010229 Version 38.0a1 Device-Name flame FW-Release 4.4.2 FW-Incremental eng.cltbld.20150115.043033 FW-Date Thu Jan 15 04:30:42 EST 2015 Bootloader L1TC000118D0

This is also reproducible in 2.2 as well: Gaia-Rev 2f916cdba7305b51a72482b6bfe860c5b8924f9c Gecko-Rev https://hg.mozilla.org/releases/mozilla-b2g37_v2_2/rev/b4c7c83a44a5 Build-ID 20150116002502 Version 37.0a2 Device-Name flame FW-Release 4.4.2 FW-Incremental eng.cltbld.20150116.040322 FW-Date Fri Jan 16 04:03:33 EST 2015 Bootloader L1TC000118D0

Triage: this is not related to settings app, regression window wanted then we'll put to the proper component

putting qawanted for branch checks to find all that's affected, but also leaving regression window wanted tag. We should treat this as an urgent.

Branch checks below. Leaving keywords while working on regression window. Issue does NOT occur on Flame 2.1 Changing time zone and time before switching back to the original time zone does not cause phone to freeze. Behavior appears normal. Device: Flame 2.1 BuildID: 20150120001202 Gaia: 77c57eb8a985d5cbd34a597fb1b978ba6e205af6 Gecko: f05d0a2d2378 Version: 34.0 (2.1) Firmware: V18D-1 User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0 Issue DOES occur on Flame 2.2 and Flame 3.0 Changing time zone and time before switching back to the original time zone causes phone to freeze, making it necessary for phone to be reflashed as the device does not move past Thundersoft splash screen if battery is removed then replaced. Device: Flame 2.2 BuildID: 20150120002507 Gaia: f5b3d1b6cfa3e702033f613915ae637cb735cbfb Gecko: 5d7497ce4cc7 Version: 37.0a2 (2.2) Firmware: V18D-1 User Agent: Mozilla/5.0 (Mobile; rv:37.0) Gecko/37.0 Firefox/37.0 Device: Flame 3.0 Master BuildID: 20150120010227 Gaia: a5c5ac093814a80b0627514c3bd5f9e96c096a4b Gecko: c1c6840d9255 Version: 38.0a1 (3.0) Firmware: V18D-1 User Agent: Mozilla/5.0 (Mobile; rv:38.0) Gecko/38.0 Firefox/38.0

B2G-Inbound Regression Window: Last working b2g-inbound build: Device: Flame 2.2 BuildID: 20141114145046 Gaia: 12e2da14efee4fa564759ef64038b6c6cfe4a04b Gecko: dc47e33ebd16 Version: 36.0a1 (2.2) Firmware: V18D-1 User Agent: Mozilla/5.0 (Mobile; rv:36.0) Gecko/36.0 Firefox/36.0 First broken b2g-inbound build: Device: Flame 2.2 BuildID: 20141114151745 Gaia: 763683f27482075caaed47f9348e84ebf8a175d5 Gecko: 704ca670e7b4 Version: 36.0a1 (2.2) Firmware: V18D-1 User Agent: Mozilla/5.0 (Mobile; rv:36.0) Gecko/36.0 Firefox/36.0 Working Gaia with Broken Gecko issue does NOT occur: Gaia: 12e2da14efee4fa564759ef64038b6c6cfe4a04b Gecko: 704ca670e7b4 Working Gecko with Broken Gaia issue DOES occur: Gaia: 763683f27482075caaed47f9348e84ebf8a175d5 Gecko: dc47e33ebd16 Pushlog: https://github.com/mozilla-b2g/gaia/compare/12e2da14efee4fa564759ef64038b6c6cfe4a04b...763683f27482075caaed47f9348e84ebf8a175d5 Issue appears to be caused by changes made in Bug 840790

Ryan, can you take a look at this please? This issue could have been possibly caused by the landing for bug 840790

Questions like that should be directed at the patch author, not the person who landed it on their behalf.

Also NI :fernando to see if he can help with the backout ASAP as he helped review : https://bugzilla.mozilla.org/show_bug.cgi?id=840790

Ktucker: can you tell me what is the problem faced by the landing of the patch to bug 840790?

I just tested the STR with and without the patch for bug 840790 and I am able to repro with the patch applied :( I don't fully understand why exactly it is failing, as the patch only modifies a json file on shared, or why why it fails on settings and not in ftu for that matter. The quick fix for the crash would be to revert the commit, but I'm not sure that would be the ideal solution, as we (at least I) don't have any idea of what exactly is the cause of the problem. But reverting, at least, fixes a potential crash and gives us some time to re-fix bug 840790 without the crash.

log for the STR once the revert is applied, no crash detected.

log for the STR with the patch for bug 840790 applied. End up crashing

fcampo, what do you suggest? Does it have any test cases attached to it? Or should I resend the patch testing for this bug along with the previous fixed one?

My recommendation would be a backout. The original bug 840790 wasn't a blocker, so getting rid of this regression seems to be more important. I don't know about any test case attached, and the STR (change region + change time + back to original region) seems to me like an edge case, but I'd rather see a patch for 840790 that doesn't break settings.

FYI, this was discovered when writing an automated test case for bug 1118054

fcampo, I think it's because it's cross referenced with the time zone in gecko. ex: http://mxr.mozilla.org/mozilla-central/search?string=Kerguelen I think you'll need to do an update on the gecko files as well. That's just my guess.

The commit that causes this bug needs to be backed out asap.

I am working with mhenretty(Thanks!) to get this backed out, I am really surprised this has not happened till now. :facmpo/anusha, PLease note these kinds of regressions have to backedout immediately so we do not affect a lot of folks!

Fixed by backing out bug 840790. master: https://github.com/mozilla-b2g/gaia/commit/e058a2ae496b9885fb26663c3b40fd62e579a39e

Also backed out of 2.2: https://github.com/mozilla-b2g/gaia/commit/c2047a46e29696238e9b4c9caaba47736421449a

Still reproducible, will try a later build. Build ID 20150204160237 Gaia Revision b9607aef7debbde09a8db801ce4d021b8262e7f3 Gaia Date 2015-02-04 16:29:57 Gecko Revision https://hg.mozilla.org/mozilla-central/rev/3cda3997f45d Gecko Version 38.0a1 Device Name flame Firmware(Release) 4.4.2 Firmware(Incremental) eng.cltbld.20150204.192122 Firmware Date Wed Feb 4 19:21:34 EST 2015 Bootloader L1TC000118D0

(In reply to Eric Chang [:ericcc] [:echang] from comment #22) > Still reproducible, will try a later build. > > Gaia Revision b9607aef7debbde09a8db801ce4d021b8262e7f3 Yup, this was just a few commits before my backout. Let me know if today's build is still failing.

This issue is verified fixed on Flame 3.0 and Flame 2.2. Results: The phone does not freeze up when changing the time zone. Environmental Variables: Device: Flame 3.0 BuildID: 20150205010209 Gaia: 2b83a6d5d1185a438b5bbd287497ac2743b501db Gecko: 34a66aaaca81 Gonk: e7c90613521145db090dd24147afd5ceb5703190 Version: 38.0a1 (3.0) Firmware Version: v188-1 User Agent: Mozilla/5.0 (Mobile; rv:38.0) Gecko/38.0 Firefox/38.0 Environmental Variables: Device: Flame 2.2 BuildID: 20150205002503 Gaia: c2047a46e29696238e9b4c9caaba47736421449a Gecko: adfba0a07e9b Gonk: e7c90613521145db090dd24147afd5ceb5703190 Version: 37.0a2 (2.2) Firmware Version: v188-1 User Agent: Mozilla/5.0 (Mobile; rv:37.0) Gecko/37.0 Firefox/37.0