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[Ben <604798@xxxxxxxxxxxxxxxxxx>]

confirmed on Ubuntu 14.04.03 fully patched as of 27 Jan 2016 with
Plustek OpticSlim M12 (networks scanner)

scanimage (sane-backends) 1.0.23; backend version 1.0.23


scanimage -d gt68xx --batch="scanned_image-%d.tiff" --batch-prompt --format=tiff
Scanning -1 pages, incrementing by 1, numbering from 1
Place document no. 1 on the scanner.
Press <RETURN> to continue.
Press Ctrl + D to terminate.

Scanning page 1
Scanned page 1. (scanner status = 5)
Place document no. 2 on the scanner.
Press <RETURN> to continue.
Press Ctrl + D to terminate.

Scanning page 2
scanimage: sane_start: Invalid argument
Segmentation fault (core dumped)


The scanner feeds about 1mm of the second page then segfaults

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https://bugs.launchpad.net/bugs/604798

Title:
  scanimage --batch crashed with SIGSEGV in
  gt68xx_line_reader_free_delays()

Status in sane-backends package in Ubuntu:
  Confirmed

Bug description:
  I'm using SANE with a Mustek BearPaw 1200CU Plus scanner, using the
  firmware from <http://www.meier-geinitz.de/sane/gt68xx-
  backend/firmware/PS1Gfw.usb> (MD5 f2f275c5a8ad5dbdc43793f046612417).
  When I run "scanimage --batch", scanimage segfaults after scanning the
  first page and returning the head to the home position:

  bjh21@sole:~$ scanimage --batch
  Scanning -1 pages, incrementing by 1, numbering from 1
  Scanning page 1
  Scanned page 1. (scanner status = 5)
  Scanning page 2
  scanimage: sane_start: Invalid argument
  Segmentation fault (core dumped)

  Scanning multiple pages in succession using multiple invocations of
  "scanimage" works correctly.

  This bug differs from #117577 in that in my case the scanning head
  moves back to the home position and scanimage segfaults, neither of
  which happened there.  Otherwise it seems very similar.

  ProblemType: Crash
  DistroRelease: Ubuntu 10.04
  Package: sane-utils 1.0.20-13ubuntu2
  ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
  Uname: Linux 2.6.32-23-generic i686
  NonfreeKernelModules: wl
  Architecture: i386
  Date: Mon Jul 12 21:57:57 2010
  DistributionChannelDescriptor:
   # This is a distribution channel descriptor
   # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
   canonical-oem-motts-20100121-3
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/scanimage
  InstallationMedia: Ubuntu GNU/Linux 9.10 "Karmic" - Build i386 LIVE Binary 20100121-21:52
  ProcCmdline: scanimage --batch
  ProcEnviron:
   SHELL=/bin/bash
   LANG=en_GB.utf8
  SegvAnalysis:
   Segfault happened at: 0xde31c9 <gt68xx_line_reader_free_delays+9>:	mov    0x88(%eax),%edx
   PC (0x00de31c9) ok
   source "0x88(%eax)" (0x00000088) not located in a known VMA region (needed readable region)!
   destination "%edx" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: sane-backends
  StacktraceTop:
   gt68xx_line_reader_free_delays (reader=0x0) at gt68xx_mid.c:957
   gt68xx_line_reader_free (reader=0x0) at gt68xx_mid.c:1153
   gt68xx_scanner_stop_scan (scanner=0x9243128)
   sane_gt68xx_cancel (handle=0x9243128) at gt68xx.c:2108
   sane_dll_cancel (handle=0x922a348) at dll.c:1263
  Title: scanimage crashed with SIGSEGV in gt68xx_line_reader_free_delays()
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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