Various notes: Good point by Chituc. I had assumed this was already cross-compiled, but according to the Ubuntu build log: > checking whether cross compiling... no
Who here knows how the Arch Linux armhf package is built? It's also still possible that a newer toolchain could fix things. I read somewhere that Ubuntu 18.04 Bionic would be upgrading to gcc 7. Anyone tried Firefox 58 or 59 on there? The SkJumper_generated source is available on Mercurial: https://hg.mozilla.org/mozilla-central/raw- file/tip/gfx/skia/skia/src/jumper/SkJumper_generated.S It's possible to take a closer look at the "illegal instruction" with firefox -g. At the crash point in gdb, run: layout asm; set arm fallback-mode arm; tui disable; disas /r <starting instruction>,<ending instruction>. Initially it gets confused about the instruction layout, but after trying different ranges it'll eventually decode properly: (gdb) disas /r 0xf458bb28,0xf458bb3e Dump of assembler code from 0xf458bb28 to 0xf458bb3e: 0xf458bb28: 92 2c 44 f2 vfma.f32 d18, d20, d2 0xf458bb2c: 93 3c 44 f2 vfma.f32 d19, d20, d3 0xf458bb30: b0 01 20 f2 vorr d0, d16, d16 0xf458bb34: b1 11 21 f2 vorr d1, d17, d17 0xf458bb38: b2 21 22 f2 vorr d2, d18, d18 0xf458bb3c: b3 31 23 f2 vorr d3, d19, d19 End of assembler dump. However, those are exactly the instructions specified for _sk_xor__vfp4 in SkJumper_generated.S. It's hard to see how the compiler or binutils could be directly responsible for generating an illegal instruction here. You can actually hexedit libxul.so and change those four vorr instructions into NOPs. Firefox then makes it past this point but crashes obscurely elsewhere, with different crash signatures on Firefox 58 vs 59. Firefox arm64 (Pi 3 or other 64-bit board required) 58 and 59 still work. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1711337 Title: Firefox crashes at start on armv7L after 55.0.1 update Status in Mozilla Firefox: Confirmed Status in firefox package in Ubuntu: Fix Released Bug description: Firefox always crashes when launched after the 55.0.1 update on an Orange Pi PC Plus (a single-board computer similar to a Raspberry Pi), even in safe mode. I did a fresh install of Armbian (a Ubuntu Xenial 16.04 re-spin for ARM single-board computer) on a similar board (Orange Pi Plus 2e), installed Firefox and experienced the same problem--it won't load without crashing. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: firefox 55.0.1+build2-0ubuntu0.16.04.2 Uname: Linux 3.4.113-sun8i armv7l AddonCompatCheckDisabled: False AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25. ApportVersion: 2.20.1-0ubuntu2.10 Architecture: armhf AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: jim 1138 F.... pulseaudio /dev/snd/controlC0: jim 1138 F.... pulseaudio BuildID: 20170814194718 Card0.Amixer.info: Card hw:0 'audiocodec'/'audiocodec' Mixer name : '' Components : '' Controls : 12 Simple ctrls : 12 Card1.Amixer.info: Card hw:1 'sndhdmi'/'sndhdmi' Mixer name : '' Components : '' Controls : 1 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'hdmi audio format Function',0 Capabilities: enum Items: 'null' 'pcm' 'AC3' 'MPEG1' 'MP3' 'MPEG2' 'AAC' 'DTS' 'ATRAC' 'ONE_BIT_AUDIO' 'DOLBY_DIGITAL_PLUS' 'DTS_HD' 'MAT' 'WMAPRO' Item0: 'pcm' Channel: Unavailable CurrentDesktop: XFCE Date: Thu Aug 17 05:37:00 2017 Extensions: extensions.sqlite corrupt or missing ForcedLayersAccel: False IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite) IpRoute: default via 192.168.10.1 dev eth0 default via 192.168.10.1 dev wlan0 proto static metric 600 169.254.0.0/16 dev eth0 scope link metric 1000 192.168.10.0/24 dev eth0 proto kernel scope link src 192.168.10.107 192.168.10.0/24 dev wlan0 proto kernel scope link src 192.168.10.108 metric 600 Locales: extensions.sqlite corrupt or missing PciMultimedia: PciNetwork: Profiles: Profile0 (Default) - LastVersion=55.0.1/20170814194718 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no RunningIncompatibleAddons: False SourcePackage: firefox Themes: extensions.sqlite corrupt or missing UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1711337/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
