[Pkg-openssl-devel] Bug#793557: clamtk in testing

Sun Jul 26 21:42:33 UTC 2015

Control: reassign -1 libssl1.0.0
Control: retitle -1 libssl1.0.0: illegal instruction crash on amd64

Hi Carlos,

please keep the bug (793557 at bugs.debian.org) in CC.

On 26.07.2015 19:44, Carlos Kosloff wrote:
> Please find below requested info.

Thanks.

> I have another computer more powerful than this one, 8 core CPU, same OS.
> Clamtk works fine there.
> For your information, KDE had major breakages after last upgrades, it is transitioning from version 4 to 5.

I don't think KDE is related to this problem.

> On 07/26/2015 06:51 AM, Andreas Cadhalpun wrote:
>> On 25.07.2015 04:10, Carlos Kosloff wrote:
>>> * Specs
>>>
>>> Using KDE desktop, on a Toshiba laptop with amd64 architecture.
>> Much more useful would be the information collected by reportbug:
>> $ reportbug --template clamtk
[...]
> Package: clamtk
> Version: 5.19-1
[...]
> -- System Information:
> Debian Release: stretch/sid
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
> 
> Kernel: Linux 4.0.0-2-amd64 (SMP w/4 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> 
> Versions of packages clamtk depends on:
> ii  clamav                          0.98.7+dfsg-2
> ii  clamav-freshclam [clamav-data]  0.98.7+dfsg-2
> ii  cron [cron-daemon]              3.0pl1-128
> ii  gnome-icon-theme                3.12.0-1
> ii  libgtk2-perl                    2:1.2495-1
> ii  libjson-perl                    2.90-1
> ii  liblocale-gettext-perl          1.05-9
> ii  liblwp-protocol-https-perl      6.06-2
> ii  libtext-csv-perl                1.33-1
> ii  libwww-perl                     6.13-1
> ii  perl                            5.20.2-6
> 
> clamtk recommends no packages.
> 
> Versions of packages clamtk suggests:
> ii  cabextract       1.6-1
> pn  clamtk-nautilus  <none>
> 
> -- no debconf information

Nothing suspicious here.

>>> * What caused the problem
>>>
>>> After a dist-upgrade on 2015/07/24 clamtk does not launch.
>> What packages were upgraded?
>> Can you post the relevant parts of /var/log/dpkg.log from that upgrade?
> 2015-07-24 21:59:13 upgrade clamtk:all 5.19-1 5.19-1

This looks strange. The previous version was already 5.19-1?

The other upgrades look unrelated to the problem. Are you sure this were
all upgrades before the problem occurred?
In particular, when was your last libssl1.0.0:amd64 upgrade?

>>> * Steps taken to resolve the problem
>>>
>>> Reinstalled.
>>> Rebooted computer.
>>> Attempted to launch from CLI.
>>> As user:
>>> command clamtk reports "illegal instruction".
>> This works fine here, thus I'm downgrading the severity.
>> clamtk is just a perl program, so any illegal instruction error is probably
>> caused by perl.
>>
>> What instructions does your CPU support?
>> Please provide the output of:
>> $ cat /proc/cpuinfo
> 
> ckosloff at notosh:~$ cat /proc/cpuinfo
> processor       : 0
> vendor_id       : AuthenticAMD
> cpu family      : 22
> model           : 48
> model name      : AMD A6-6310 APU with AMD Radeon R4 Graphics
> stepping        : 1
> microcode       : 0x7030105
> cpu MHz         : 1000.000
> cache size      : 2048 KB
> physical id     : 0
> siblings        : 4
> core id         : 0
> cpu cores       : 4
> apicid          : 0
> initial apicid  : 0
> fpu             : yes
> fpu_exception   : yes
> cpuid level     : 13
> wp              : yes
> flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf eagerfpu pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt topoext perfctr_nb bpext perfctr_l2 arat cpb hw_pstate npt lbrv svm_lock nrip_save tsc_scale flushbyasid decodeassists pausefilter pfthreshold vmmcall bmi1 xsaveopt
> bugs            : fxsave_leak
> bogomips        : 3593.29
> TLB size        : 1024 4K pages
> clflush size    : 64
> cache_alignment : 64
> address sizes   : 40 bits physical, 48 bits virtual
> power management: ts ttp tm 100mhzsteps hwpstate cpb [12] [13]

This processor doesn't have e.g. avx2.

>> A backtrace of the crash would most certainly be helpful as well.
>> Please provide the output of the following command (after installing gdb):
>> $ gdb --batch -ex r -ex 'bt full' -ex q --args perl /usr/bin/clamtk
> ckosloff at notosh:~$ gdb --batch -ex r -ex 'bt full' -ex q --args perl /usr/bin/clamtk
> warning: the debug information found in "/lib64/ld-2.19.so" does not match "/lib64/ld-linux-x86-64.so.2" (CRC mismatch).

This warning is suspicious. Is your file system corrupted? Try:
$ dpkg --verify libc6:amd64 libc6-dbg:amd64 libssl1.0.0:amd64

> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> [New Thread 0x7fffec018700 (LWP 6092)]
> 
> Program received signal SIGILL, Illegal instruction.
> 0x00007ffff4ddb168 in ?? () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0

So the illegal instruction is in libcrypto, which is shipped in libssl1.0.0.
Thus reassigning there.

Please install libssl1.0.0-dbg:amd64 and then use the following gdb command to
get a more useful backtrace and the instruction causing the problem:
$ gdb --batch -ex r -ex 'bt full' -ex disas -ex q --args perl /usr/bin/clamtk

> #0  0x00007ffff4ddb168 in ?? () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
> No symbol table info available.
> #1  0x00007ffff4e679bd in ?? () from /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0
> No symbol table info available.
> #2  0x00007ffff51b82d9 in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0
> No symbol table info available.
> #3  0x00007ffff51aad61 in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0
> No symbol table info available.
> #4  0x00007ffff51ab175 in ?? () from /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0
> No symbol table info available.
> #5  0x00007ffff5434769 in ?? () from /usr/lib/x86_64-linux-gnu/perl5/5.20/auto/Net/SSLeay/SSLeay.so
> No symbol table info available.
> #6  0x00000000004b2f6b in Perl_pp_entersub ()
> No symbol table info available.
> #7  0x00000000004ab8a6 in Perl_runops_standard ()
> No symbol table info available.
> #8  0x000000000043e10e in perl_run ()
> No symbol table info available.
> #9  0x000000000041bebb in main ()
> No symbol table info available.
> A debugging session is active.

Best regards,
Andreas