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[Jeff Abrahamson <1784785@xxxxxxxxxxxxxxxxxx>]

Though perhaps this might help: the end of an strace, clipped after a
long run of futex's.

...
futex(0x7f05d5b46f38, FUTEX_WAKE_PRIVATE, 2147483647) = 0
openat(AT_FDCWD, "/home/jeff/.config/gtk-2.0/gtkfilechooser.ini", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=214, ...}) = 0
read(9, "[Filechooser Settings]\nLocationM"..., 4096) = 214
read(9, "", 4096)                       = 0
close(9)                                = 0
munmap(0x7f05bad1f000, 1957888)         = 0
munmap(0x7f05b933e000, 1957888)         = 0
futex(0x7f05d5b46f38, FUTEX_WAKE_PRIVATE, 2147483647) = 0
ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) = 0
getpid()                                = 623
write(2, "\n(ufraw:623): GLib-GObject-\33[1;3"..., 130
(ufraw:623): GLib-GObject-CRITICAL **: 05:48:02.397: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
) = 130
ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) = 0
getpid()                                = 623
write(2, "\n(ufraw:623): GLib-GObject-\33[1;3"..., 130
(ufraw:623): GLib-GObject-CRITICAL **: 05:48:02.397: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
) = 130
futex(0x7f05d5b46f38, FUTEX_WAKE_PRIVATE, 2147483647) = 0
munmap(0x7f058c3e0000, 130154496)       = 0
munmap(0x7f05d6118000, 323584)          = 0
munmap(0x7f05847c0000, 130154496)       = 0
munmap(0x7f05783e0000, 130154496)       = 0
munmap(0x7f05bab42000, 1953792)         = 0
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x38} ---
+++ killed by SIGSEGV (core dumped) +++
Segmentation fault (core dumped)

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https://bugs.launchpad.net/bugs/1784785

Title:
  ufraw segfaults at end of file write

Status in ufraw package in Ubuntu:
  New

Bug description:
  When writing its output file, ufraw segfaults.  This happens both for
  jpg and png (and then I stopped testing different file formats).  Most
  of the time the file appears to be complete.  Sometimes it is signaled
  as corrupt by a file viewer.

  I'm not sure how to usefully debug further short of installing full
  source code, compiling with -g, etc.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ufraw 0.22-3
  ProcVersionSignature: Ubuntu 4.15.0-23.25-generic 4.15.18
  Uname: Linux 4.15.0-23-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  CurrentDesktop: i3
  Date: Wed Aug  1 07:26:47 2018
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-10-23 (1012 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  SourcePackage: ufraw
  UpgradeStatus: Upgraded to bionic on 2018-06-14 (47 days ago)

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