#26194: Segmentation violation in scanimage ---------------------------------+------------------------------------------ Reporter: hanche@… | Owner: aguynamedryan+sane@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 1.9.1 Keywords: | Port: sane-backends ---------------------------------+------------------------------------------ Comment(by aguynamedryan+macports@…): First off, thanks for the great problem description. Lots of good detail in there. Unfortunately I don't have access to your particular scanner so I'm going to have to ask you to run a few commands for me. We'll start with the most basic. Just to make certain that we're both looking at the same version of SANE, will you please tell me the output of: {{{ scanimage -V }}} Also, please run the following command and attach the resulting debug.log file to this ticket: {{{ export SANE_DEBUG_DLL=127 Thanks! export SANE_DEBUG_GENESYS=127 scanimage -d genesys:libusb:038:003 --mode Lineart -x 57 -y 100 2> debug.log }}} This might help me figure out how far {{{sane_genesys_open}}} gets before the problem occurs. As a final shot in the dark, assuming you have only the one scanner attached to your computer, will you please tell me what happens when you run: {{{ scanimage --mode Lineart -x 57 -y 100 }}} -- Ticket URL: <http://trac.macports.org/ticket/26194#comment:2> MacPorts <http://www.macports.org/> Ports system for Mac OS

#26194: Segmentation violation in scanimage ---------------------------------+------------------------------------------ Reporter: hanche@… | Owner: aguynamedryan+sane@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 1.9.1 Keywords: | Port: sane-backends ---------------------------------+------------------------------------------ Comment(by hanche@…): {{{ ; scanimage -V scanimage (sane-backends) 1.0.21; backend version 1.0.21 }}} I ran scanimage the way you requested and attached debug.log. Running scanimage without specifying the device leads to a segmentation violation as well. I will attach the resulting log as debug2.log. -- Ticket URL: <http://trac.macports.org/ticket/26194#comment:4> MacPorts <http://www.macports.org/> Ports system for Mac OS

#26194: Segmentation violation in scanimage ---------------------------------+------------------------------------------ Reporter: hanche@… | Owner: aguynamedryan+sane@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 1.9.1 Keywords: | Port: sane-backends ---------------------------------+------------------------------------------ Comment(by aguynamedryan+macports@…): Replying to [comment:5 hanche@…]: When I run {{{scanimage -L}}} on my Mac I get a similar message regarding AppleUSBCardReaderUMC. I am pretty sure this is not our culprit. I'll do more thorough investigation about this tomorrow just to be sure. Based on the output in debug2.log, it looks like the genesys' init_options function is where the segmentation violation occurs. I've poked around in the code and init_options has undergone a fair bit of change over the last few years. There also seems to be very little overall discussion of using Pentax DSMobile 600 scanners with SANE. I'm wondering if there was a bug introduced recently and no one has run into it until now since so few appear to use the DSMobile. Is this the first time you've used the DSMobile with SANE? If you ''have'' used the scanner with SANE before, what was the last working version you used with this scanner? Knowing the version number will help me narrow down which changes might be causing the problem. -- Ticket URL: <http://trac.macports.org/ticket/26194#comment:6> MacPorts <http://www.macports.org/> Ports system for Mac OS

#26194: Segmentation violation in scanimage ---------------------------------+------------------------------------------ Reporter: hanche@… | Owner: aguynamedryan+sane@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 1.9.1 Keywords: | Port: sane-backends ---------------------------------+------------------------------------------ Comment(by aguynamedryan+macports@…): Replying to [comment:7 hanche@…]: I double-checked and the AppleUSBCardReaderUMC message appears even if the scanner successfully scanned in some images. Bottom line is I can't debug this issue because I don't have the right scanner. From what I'm seeing my gut tells me that this is an upstream problem. Here is how I would go about tracking down the cause of this problem: * Hit the SANE mailing lists and forums and see if anyone else has a DSMobile * If they do, see if they are having the same issue * If you have access to a Linux box, throw SANE on it and try your scanner there * If it works then we'll have to figure out what causes the failure on Mac and not Linux * If it doesn't work, it might be easier to try patching/recompiling the source under Linux * As I mentioned above, the init_options function in genesys.c is where the problem occurs. Start your debugging journey in that function. If you'd like you're welcome to email me for some offline guidance on debugging SANE. I've done a bit of contribution to SANE before so I know a bit about how it works. That said, I'm not nearly the expert some of the upstream developers are. If/when you do have a patch, send it my way and I'll throw it into the port ASAP so you don't have to wait for the next release from the SANE developers. I'll also keep my eye out and release an update to the port as soon as sane-backends 1.0.22 is out in the hopes that there's a fix in there somewhere. -- Ticket URL: <http://trac.macports.org/ticket/26194#comment:8> MacPorts <http://www.macports.org/> Ports system for Mac OS

#26194: Segmentation violation in scanimage ---------------------------------+------------------------------------------ Reporter: hanche@… | Owner: aguynamedryan+sane@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 1.9.1 Keywords: | Port: sane-backends ---------------------------------+------------------------------------------ Comment(by jmr@…): Do you still see this with 1.0.22? -- Ticket URL: <https://trac.macports.org/ticket/26194#comment:10> MacPorts <http://www.macports.org/> Ports system for Mac OS