simple-scan crashed with SIGSEGV in __strcasecmp_nonascii()

[Dmitry Shachnev]

simple-scan crashed with SIGSEGV in __strcasecmp_nonascii()

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: simple-scan 3.2.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic 3.2.5
Uname: Linux 3.2.0-15-generic i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Fri Feb 10 21:13:27 2012
DriverPackageVersions:
 libsane 1.0.22-7ubuntu1
 libsane-extras N/A
 hplip 3.12.2-0ubuntu1
 hpoj N/A
ExecutablePath: /usr/bin/simple-scan
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
MachineType: FUJITSU SIEMENS AMILO Li 1818
ProcCmdline: simple-scan
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-15-generic root=UUID=2e8fd81a-2a9c-4223-b8cb-19c24f99764e ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0xdd218b <__strcasecmp_nonascii+59>: movzbl (%edx),%edi
 PC (0x00dd218b) ok
 source "(%edx)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%edi" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SimpleScanLog:

SourcePackage: simple-scan
StacktraceTop:
 __strcasecmp_nonascii (s1=0x8e0c586 "/usb/Photosmart_C4200_series?serial=MY798KP16D04VP", s2=0x0) at ../string/strcasecmp.c:65
 sane_hpaio_open () from /usr/lib/sane/libsane-hpaio.so.1
 sane_dll_open () from /usr/lib/i386-linux-gnu/libsane.so.1
 sane_open () from /usr/lib/i386-linux-gnu/libsane.so.1
 ?? ()
Title: simple-scan crashed with SIGSEGV in __strcasecmp_nonascii()
UpgradeStatus: Upgraded to precise on 2012-02-10 (0 days ago)
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev nopasswdlogin plugdev sambashare tape video
dmi.bios.date: 07/30/2007
dmi.bios.vendor: FUJITSU SIEMENS
dmi.bios.version: 1.14C
dmi.board.name: AMILO Li 1818
dmi.board.vendor: FUJITSU SIEMENS
dmi.chassis.type: 10
dmi.chassis.vendor: FUJITSU SIEMENS
dmi.modalias: dmi:bvnFUJITSUSIEMENS:bvr1.14C:bd07/30/2007:svnFUJITSUSIEMENS:pnAMILOLi1818:pvr:rvnFUJITSUSIEMENS:rnAMILOLi1818:rvr:cvnFUJITSUSIEMENS:ct10:cvr:
dmi.product.name: AMILO Li 1818
dmi.sys.vendor: FUJITSU SIEMENS

[Apport retracing service (apport)]

StacktraceTop:
 __strcasecmp_nonascii (s1=0x8e0c586 "/usb/Photosmart_C4200_series?serial=MY798KP16D04VP", s2=0x0) at ../string/strcasecmp.c:65
 hpaioFindScanner (name=0x8e0c586 "/usb/Photosmart_C4200_series?serial=MY798KP16D04VP") at scan/sane/hpaio.c:320
 sane_hpaio_open (devicename=0x8e0c586 "/usb/Photosmart_C4200_series?serial=MY798KP16D04VP", pHandle=0xb067c0a4) at scan/sane/hpaio.c:1687
 sane_dll_open (full_name=<optimized out>, meta_handle=0xb067c198) at dll.c:1198
 sane_open (name=0x8e0c580 "hpaio:/usb/Photosmart_C4200_series?serial=MY798KP16D04VP", h=0xb067c198) at dll-s.c:23

[Michael Nagel (nailor)]

Hi there,

thank you for filing this bug and showing your interest in Simple Scan!

This seems to be a Hardware Issue, i.e. Simple Scan does not support
your scanner perfectly -- or possibly not at all.

Unfortunately such problems happen more often then they should, and while it might indeed be a problem with Simple Scan, in our experience, most of the time it is not.
This is why we prepared a check-list at [1] that will let you find out whether or not it really is a problem with Simple Scan and what your options are in either case.

Please read that list and tell us how you decided to proceed. I will set
this bug to "Incomplete", so a friendly robot will expire this bug in 60
days if you do not respond. However, we would really prefer to hear back
from you!

Best Regards
Michael

[1] https://help.ubuntu.com/community/SimpleScanHardwareIssues

[Dmitry Shachnev (mitya57)]

My scanner works fine with both simple-scan and xsane, and there were almost no issues for 2 years of using it with both these apps.

As far as I can remember this happened when I closed the properties dialog. I can't reproduce it now, and I think this bug is not applicable to xsane.

[Michael Nagel (nailor)]

UpgradeStatus: Upgraded to precise on 2012-02-10 (0 days ago)
is this correct?

Can this issue be reproduced every time?

If I look at this:
StacktraceTop:
 __strcasecmp_nonascii (s1=0x8e0c586 "/usb/Photosmart_C4200_series?serial=MY798KP16D04VP", s2=0x0) at ../string/strcasecmp.c:65
 sane_hpaio_open () from /usr/lib/sane/libsane-hpaio.so.1
 sane_dll_open () from /usr/lib/i386-linux-gnu/libsane.so.1
 sane_open () from /usr/lib/i386-linux-gnu/libsane.so.1
 ?? ()

it seems to be related to some hardware-related operation.
Unfortunately we currently do not have the manpower to look into sporadic hardware-related issues.

[Dmitry Shachnev (mitya57)]

Yes, that's correct.

I tried to reproduce it, and there was a crash, but it seems to be different from this one, and I reported it as bug 930914.
I will let you know when I'll manage to reproduce exactly the same issue.

[Michael Nagel (nailor)]

The scanner driver might be corrupting the adress space, leading to arbitrary crashes, so reporting more and more issues will probably not help. More interesting is the system behind it:

- can you try do do the same steps, say ten times. if it crashes all the time with the same message: thats noteworthy. if it crashes all the time with different messages: thats noteworthy. if it crashes sometimes: thats noteworthy but probably the least helpful.

- can you install an old version of hplip and try again?

- can you install xsane and try that?

Thanks & Best Regards!

[Dmitry Shachnev (mitya57)]

Sorry for the delay. Here are my testing results:

- I keep getting crashes when I play with unplugging cable — these crashes include bug 930914, bug 902830 (this is one that I can reproduce for sure, steps are given) and some other (stack traces always include sane_hpaio_close());
- I never got this particular crash again;
- These crashes (or at least bug 902830) occur with hplip from oneiric-updates but installed on precise, currently I can't test it on a pure oneiric system;
- XSane never crashed in my tests, however it displays an error message when I try to follow the steps from bug 930914.

[Dmitry Shachnev (mitya57)]

Sorry, please replace s/bug 902830/bug 934194/g in my previous message. Bug 902830 is one that I reported two months ago, it's similar to the newly reported one and may be also helpful for you...

[Michael Nagel (nailor)]

what error message does xsane display?

[Dmitry Shachnev (mitya57)]

Here it is.

[Michael Nagel (nailor)]

this is most certainly an issue in the backend and not related to anything simple-scan does.

as noted in https://help.ubuntu.com/community/SimpleScanHardwareIssues the simple-scan team does not have ressources to debug issues in the backends. scanning must mork with scanimage and/or xsane before we can continue. feel free to raise this issue with the hplip and/or sane-backends developers. you can either file this bug against those packages or contact them via other means, e.g. mailing lists.

i will close the ticket for simple-scan as we cannot do anything here...

[Till Kamppeter (till-kamppeter)]

Can someone at HP check the HPAIO scanner driver? Thanks.