[sane-devel] Canon ImageClass MF644Cdw

David McMahon thedjm at gmail.com
Sat Oct 5 21:48:06 BST 2019


Thanks Kip.  I've tried a few more things to try to isolate.

First

$  cat /etc/lsb-release
DISTRIB_ID=LinuxMint
DISTRIB_RELEASE=19
DISTRIB_CODENAME=tara
DISTRIB_DESCRIPTION="Linux Mint 19 Tara"

Commenting pixma out of dll.conf avoids the buffer overflow but then of
course the scanner is not found.

$ scanimage -L

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).

valgrind might be of use here?  Here's a rum with pixma uncommented in
dll.conf:

$ valgrind scanimage -L
==16057== Memcheck, a memory error detector
==16057== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==16057== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==16057== Command: scanimage -L
==16057==
*** buffer overflow detected ***: scanimage terminated
==16057==
==16057== Process terminating with default action of signal 6 (SIGABRT)
==16057==    at 0x5526E97: raise (raise.c:51)
==16057==    by 0x5528800: abort (abort.c:79)
==16057==    by 0x5571896: __libc_message (libc_fatal.c:181)
==16057==    by 0x561CCFE: __fortify_fail_abort (fortify_fail.c:33)
==16057==    by 0x561CD20: __fortify_fail (fortify_fail.c:44)
==16057==    by 0x561AA0F: __chk_fail (chk_fail.c:28)
==16057==    by 0x5619F28: _IO_str_chk_overflow (vsprintf_chk.c:31)
==16057==    by 0x5576493: _IO_default_xsputn (genops.c:417)
==16057==    by 0x5544FEA: vfprintf (vfprintf.c:1643)
==16057==    by 0x5619FCA: __vsprintf_chk (vsprintf_chk.c:82)
==16057==    by 0x5619EF9: __sprintf_chk (sprintf_chk.c:31)
==16057==    by 0x6D08054: ??? (in
/usr/lib/x86_64-linux-gnu/sane/libsane-pixma.so.1.0.28)
==16057==
==16057== HEAP SUMMARY:
==16057==     in use at exit: 23,779 bytes in 57 blocks
==16057==   total heap usage: 2,975 allocs, 2,918 frees, 1,105,998 bytes
allocated
==16057==
==16057== LEAK SUMMARY:
==16057==    definitely lost: 0 bytes in 0 blocks
==16057==    indirectly lost: 0 bytes in 0 blocks
==16057==      possibly lost: 10,968 bytes in 30 blocks
==16057==    still reachable: 12,811 bytes in 27 blocks
==16057==         suppressed: 0 bytes in 0 blocks
==16057== Rerun with --leak-check=full to see details of leaked memory
==16057==
==16057== For counts of detected and suppressed errors, rerun with: -v
==16057== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Aborted

On Sat, Oct 5, 2019 at 1:21 PM Kip Shaffer <kip at shafferhouse.org> wrote:

> Hi David!  Here is my output from the same command.  I have nothing in my
> pixma.conf file.
>
> SANE_DEBUG_BJNP=5 scanimage -L 2>&1
> [sanei_debug] Setting debug level of bjnp to 5.
> [bjnp] sanei_bjnp_find_devices, pixma backend version: 0.23.4
> [bjnp] sanei_bjnp_find_devices: No devices specified in configuration file.
> [bjnp] sanei_bjnp_find_devices: Added all configured scanners, now do auto
> detection...
> [bjnp] prepare_socket: lo is not a valid IPv4 interface, skipping...
> [bjnp] prepare_socket: eth0 is IPv4 capable, sending broadcast, socket = 39
> [bjnp] prepare_socket: lo is not a valid IPv6 interface, skipping...
> [bjnp] prepare_socket: eth0 is IPv6 capable, sending broadcast, socket = 40
> [bjnp] sanei_bjnp_find_devices: Select returned, time left 0.499992....
> [bjnp] sanei_find_devices: Discover response:
> [bjnp]  00000000:4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
> [bjnp]  00000010:00 01 80 00 06 04 f4 a9  97 c9 3d 62 c0 a8 01 6f
> [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or
> service not known
> [bjnp] bjnp_allocate_device(mfnp://192.168.1.111:8610/timeout=10000) 0
> [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or
> service not known
> [bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.1.111
>  port 8610
> [bjnp] bjnp_get_scanner_mac_address: Discover response:
> [bjnp]  00000000:4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
> [bjnp]  00000010:00 01 80 00 06 04 f4 a9  97 c9 3d 62 c0 a8 01 6f
> [bjnp] bjnp_allocate_device: Scanner not yet in our list, added it:
> 192.168.1.111:8610
> [bjnp] get_scanner_id: Get scanner identity
> [bjnp]  00000000:4d 46 4e 50 02 30 00 00  00 01 00 00 00 00 00 00
> [bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.1.111
>  port 8610
> [bjnp] get_scanner_id: scanner identity:
> [bjnp]  00000000:4d 46 4e 50 82 30 00 00  00 01 00 00 00 00 00 5a
> [bjnp]  00000010:4d 46 47 3a 43 41 4e 4f  4e 3b 43 4d 44 3a 4d 46
> [bjnp]  00000020:4e 50 31 2c 4d 75 6c 74  69 50 41 53 53 20 32 2e
> [bjnp]  00000030:31 3b 4d 44 4c 3a 4d 46  36 34 32 43 2f 36 34 33
> [bjnp]  00000040:43 2f 36 34 34 43 3b 43  4c 53 3a 49 4d 47 3b 44
> [bjnp]  00000050:45 53 3a 43 61 6e 6f 6e  20 4d 46 36 34 32 43 2f
> [bjnp]  00000060:36 34 33 43 2f 36 34 34  43 3b
> [bjnp] get_scanner_id: Scanner identity string =
> MFG:CANON;CMD:MFNP1,MultiPASS 2.1;MDL:MF642C/643C/644C;CLS:IMG;DES:Canon
> MF642C/643C/644C; - length = 90
> [bjnp] get_scanner_id: Scanner model = MF642C/643C/644C
> [bjnp] add_scanner: New scanner added: mfnp://
> 192.168.1.111:8610/timeout=10000, serial 192.168.1.111, mac address:
> f4a997c93d62.
> [bjnp] sanei_bjnp_find_devices: Select returned, time left 0.499997....
> [bjnp] sanei_find_devices: Discover response:
> [bjnp]  00000000:4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
> [bjnp]  00000010:00 01 80 00 06 04 f4 a9  97 c9 3d 62 c0 a8 01 6f
> [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or
> service not known
> [bjnp] bjnp_allocate_device(mfnp://192.168.1.111:8610/timeout=10000) 1
> [bjnp] get_scanner_name: Name for 192.168.1.111 not found : Name or
> service not known
> [bjnp] setup_udp_socket: Setting up a UDP socket, dest: 192.168.1.111
>  port 8610
> [bjnp] bjnp_get_scanner_mac_address: Discover response:
> [bjnp]  00000000:4d 46 4e 50 82 01 00 00  00 00 00 00 00 00 00 10
> [bjnp]  00000010:00 01 80 00 06 04 f4 a9  97 c9 3d 62 c0 a8 01 6f
> [bjnp] add_scanner: Scanner at mfnp://192.168.1.111:8610/timeout=10000
> was added before, good!
> [bjnp] sanei_find_devices: scanner discovery finished...
> device `pixma:MF642C/643C/644C_192.168.1.111' is a CANON Canon i-SENSYS
> MF640 Series multi-function peripheral
>
>
>
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