This bug was fixed in the package plymouth - 0.9.2-3ubuntu13.5
---------------
plymouth (0.9.2-3ubuntu13.5) xenial; urgency=medium
*debian/patches/misc-changes.patch: Drop call to stop_animation as it would
unreference a bunch of variables and cause a crash writing a NULL VMA.
(LP: #927636)
-- Brian Murray <br...@ubuntu.com> Mon, 07 May 2018 16:39:09 -0700
** Changed in: plymouth (Ubuntu Xenial)
Status: Fix Committed => Fix Released
** Changed in: plymouth (Ubuntu Trusty)
Status: Fix Committed => Fix Released
--
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https://bugs.launchpad.net/bugs/927636
Title:
plymouthd crashed with SIGSEGV in script_obj_deref_direct()
Status in Plymouth:
Confirmed
Status in plymouth package in Ubuntu:
Fix Released
Status in plymouth source package in Trusty:
Fix Released
Status in plymouth source package in Xenial:
Fix Released
Status in plymouth source package in Artful:
Fix Released
Bug description:
[Impact]
Plymouth is crashing regularly for users of releases before Ubuntu 18.04. The
crash reporting dialogs must be annoying for those experiencing the crash.
[Test Case]
We have not figured out how to recreate the crash, but the errors bucket
(https://errors.ubuntu.com/bucket/?id=/sbin/plymouthd%3A11%3Ascript_obj_deref_direct%3Ascript_obj_as_custom%3Ascript_execute_object_with_parlist%3Ascript_execute_object%3Ascript_lib_plymouth_on_update_status)
is updated hourly from people who encounter the crash. Checking the errors
bucket for an absence of the new version should be sufficient to confirm that
the crash is not occurring.
[Regression Potential]
The fix for this bug involved dropping an undocumented patch from plymouth
which is rather risky. That being said the fix has been in Ubuntu 18.04 since
mid April and no regressions have turned up. While I'm checking the Error
Tracker for new plymouth crashes regularly it would be best to let this SRU age
for longer than the 7 day period to be sure nothing is amiss.
Ubuntu 12.04 LTS (development branch)
ProblemType: CrashDistroRelease: Ubuntu 12.04
Package: plymouth 0.8.2-2ubuntu28
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
Uname: Linux 3.2.0-14-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Mon Feb 6 07:03:15 2012
DefaultPlymouth: /lib/plymouth/themes/xubuntu-logo/xubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
MachineType: Foxconn AMD HDZS01
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-14-generic
root=UUID=0bb93586-7343-45bd-802b-03adbb46f430 ro quiet splash vt.handoff=7
ProcCmdline: /sbin/plymouthd --mode=boot --attach-to-session
ProcEnviron: PATH=(custom, no user)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-14-generic
root=UUID=0bb93586-7343-45bd-802b-03adbb46f430 ro quiet splash vt.handoff=7
SegvAnalysis:
Segfault happened at: 0x7effe6b50ea0 <script_obj_deref_direct>: cmpl
$0x1,(%rdi)
PC (0x7effe6b50ea0) ok
source "$0x1" ok
destination "(%rdi)" (0x00000000) not located in a known VMA region (needed
writable region)!
SegvReason: writing NULL VMA
Signal: 11SourcePackage: plymouth
StacktraceTop:
script_obj_deref_direct () from /lib/plymouth/script.so
script_obj_as_custom () from /lib/plymouth/script.so
script_execute_object () from /lib/plymouth/script.so
script_lib_plymouth_on_update_status () from /lib/plymouth/script.so
?? ()
TextPlymouth: /lib/plymouth/themes/xubuntu-text/xubuntu-text.plymouth
Title: plymouthd crashed with SIGSEGV in script_obj_deref_direct()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
dmi.bios.date: 04/19/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: A93F1022
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: AHD1S
dmi.board.vendor: Foxconn
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrA93F1022:bd04/19/2011:svnFoxconn:pnAMDHDZS01:pvrTobefilledbyO.E.M.:rvnFoxconn:rnAHD1S:rvr:
dmi.product.name: AMD HDZS01
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Foxconn
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