"double free or corruption" in poldi-ctrl

[Jussi Kukkonen]

Binary package hint: libpam-poldi

I tried to use my GnuPG smartcard for logging in using the instructions here: http://www.schiessle.org/howto/poldi.shtml

Feisty has the needed libpam-poldi, but trying to run poldi-ctrl results in failure. The card reader is a "SCM SCR 3310" and so far it seems to be working perfectly (ssh authentication and gpg decrypting/signing work). Here is the output:

jku@loki:~$ poldi-ctrl -d
poldi-ctrl: detected reader `SCM SCR 3310 (21120629204639) 00 00'
poldi-ctrl: pcsc_connect failed: sharing violation (0x8010000b)
*** glibc detected *** poldi-ctrl: double free or corruption (fasttop): 0x080607f8 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6[0xb7e027cd]
/lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7e05e30]
poldi-ctrl[0x8054c89]
poldi-ctrl[0x804bbad]
poldi-ctrl[0x804af66]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb7db0ebc]
poldi-ctrl[0x804a161]
======= Memory map: ========
08048000-0805f000 r-xp 00000000 03:02 544812 /usr/bin/poldi-ctrl
0805f000-08060000 rwxp 00016000 03:02 544812 /usr/bin/poldi-ctrl
08060000-08081000 rwxp 08060000 00:00 0 [heap]
43384000-4338a000 r-xp 00000000 03:02 527337 /lib/libusb-0.1.so.4.4.4
4338a000-4338c000 rwxp 00005000 03:02 527337 /lib/libusb-0.1.so.4.4.4
b7c00000-b7c21000 rwxp b7c00000 00:00 0
b7c21000-b7d00000 ---p b7c21000 00:00 0
b7d44000-b7d4f000 r-xp 00000000 03:02 523277 /lib/libgcc_s.so.1
b7d4f000-b7d50000 rwxp 0000a000 03:02 523277 /lib/libgcc_s.so.1
b7d60000-b7d62000 rwxp b7d60000 00:00 0
b7d62000-b7d75000 r-xp 00000000 03:02 523644 /lib/tls/i686/cmov/libpthread-2.5.so
b7d75000-b7d77000 rwxp 00013000 03:02 523644 /lib/tls/i686/cmov/libpthread-2.5.so
b7d77000-b7d79000 rwxp b7d77000 00:00 0
b7d79000-b7d81000 r-xp 00000000 03:02 539818 /usr/lib/libpcsclite.so.1.0.0
b7d81000-b7d82000 rwxp 00007000 03:02 539818 /usr/lib/libpcsclite.so.1.0.0
b7d82000-b7d84000 rwxp b7d82000 00:00 0
b7d84000-b7d97000 r-xp 00000000 03:02 523634 /lib/tls/i686/cmov/libnsl-2.5.so
b7d97000-b7d99000 rwxp 00012000 03:02 523634 /lib/tls/i686/cmov/libnsl-2.5.so
b7d99000-b7d9b000 rwxp b7d99000 00:00 0
b7d9b000-b7ed6000 r-xp 00000000 03:02 523626 /lib/tls/i686/cmov/libc-2.5.so
b7ed6000-b7ed7000 r-xp 0013b000 03:02 523626 /lib/tls/i686/cmov/libc-2.5.so
b7ed7000-b7ed9000 rwxp 0013c000 03:02 523626 /lib/tls/i686/cmov/libc-2.5.so
b7ed9000-b7edc000 rwxp b7ed9000 00:00 0
b7edc000-b7ede000 r-xp 00000000 03:02 523631 /lib/tls/i686/cmov/libdl-2.5.so
b7ede000-b7ee0000 rwxp 00001000 03:02 523631 /lib/tls/i686/cmov/libdl-2.5.so
b7ee0000-b7ee3000 r-xp 00000000 03:02 540313 /usr/lib/libgpg-error.so.0.3.0
b7ee3000-b7ee4000 rwxp 00002000 03:02 540313 /usr/lib/libgpg-error.so.0.3.0
b7ee4000-b7f33000 r-xp 00000000 03:02 540318 /usr/lib/libgcrypt.so.11.2.2
b7f33000-b7f35000 rwxp 0004e000 03:02 540318 /usr/lib/libgcrypt.so.11.2.2
b7f35000-b7f36000 rwxp b7f35000 00:00 0
b7f36000-b7f37000 r--s 0000f000 00:0f 14738 /var/run/pcscd.pub
b7f37000-b7f38000 r--s 0000e000 00:0f 14738 /var/run/pcscd.pub
b7f38000-b7f39000 r--s 0000d000 00:0f 14738 /var/run/pcscd.pub
b7f39000-b7f3a000 r--s 0000c000 00:0f 14738 /var/run/pcscd.pub
b7f3a000-b7f3b000 r--s 0000b000 00:0f 14738 /var/run/pcscd.pub
b7f3b000-b7f3c000 r--s 0000a000 00:0f 14738 /var/run/pcscd.pub
b7f3c000-b7f3d000 r--s 00009000 00:0f 14738 /var/run/pcscd.pub
b7f3d000-b7f3e000 r--s 00008000 00:0f 14738 /var/run/pcscd.pub
b7f3e000-b7f3f000 r--s 00007000 00:0f 14738 /var/run/pcscd.pub
b7f3f000-b7f40000 r--s 00006000 00:0f 14738 /var/run/pcscd.pub
b7f40000-b7f41000 r--s 00005000 00:0f 14738 /var/run/pcscd.pub
b7f41000-b7f42000 r--s 00004000 00:0f 14738 /var/run/pcscd.pub
b7f42000-b7f43000 r--s 00003000 00:0f 14738 /var/run/pcscd.pub
b7f43000-b7f44000 r--s 00002000 00:0f 14738 /var/run/pcscd.pub
b7f44000-b7f45000 r--s 00001000 00:0f 14738 /var/run/pcscd.pub
b7f45000-b7f46000 r--s 00000000 00:0f 14738 /var/run/pcscd.pub
b7f46000-b7f47000 rwxp b7f46000 00:00 0
b7f47000-b7f60000 r-xp 00000000 03:02 523493 /lib/ld-2.5.so
b7f60000-b7f62000 rwxp 00019000 03:02 523493 /lib/ld-2.5.so
bf893000-bf8a8000 rw-p bf893000 00:00 0 [stack]
ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]
Aborted

[Jussi Kukkonen (jku)]

My launchpad fu was evidently weak (marked duplicate).

This seems to happen because I had gpg-agent running.