The crash is due to AppArmor. Adding the following to the profile for
/usr/lib/chromium-browser/chromium-browser gets things working again:
capability sys_admin,
capability sys_chroot,
owner @{PROC}/[0-9]*/setgroups w,
owner @{PROC}/[0-9]*/gid_map w,
owner @{PROC}/[0-9]*/uid_map w,
@{PROC}/[0-9]*/stat r,
** Attachment removed: "BootDmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1471645/+attachment/4424858/+files/BootDmesg.txt
** Attachment removed: "UdevDb.txt"
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1471645/+attachment/4424877/+files/UdevDb.txt
** Attachment removed: "UdevLog.txt"
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1471645/+attachment/4424878/+files/UdevLog.txt
** Attachment removed: "CurrentDmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1471645/+attachment/4424861/+files/CurrentDmesg.txt
** Attachment removed: "ProcModules.txt"
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1471645/+attachment/4424870/+files/ProcModules.txt
** Attachment removed: "ProcMaps.txt"
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1471645/+attachment/4424869/+files/ProcMaps.txt
** Attachment removed: "DiskUsage.txt"
https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1471645/+attachment/4424864/+files/DiskUsage.txt
** Also affects: apparmor (Ubuntu)
Importance: Undecided
Status: New
** Changed in: chromium-browser (Ubuntu)
Status: New => Invalid
** Information type changed from Private to Public
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https://bugs.launchpad.net/bugs/1471645
Title:
[trusty] [regression] chromium-browser crashed with SIGABRT in
base::debug::BreakDebugger()
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