[clamav-users] ClamAV SegFault on Reload - 0.99.3-beta1
Michael D.
clamav at cosis.dk
Tue Sep 26 00:11:16 UTC 2017
Hi Steven,
Tried running "clamdscan --reload" throughout the night - no segfaults
so far.
I have been running "clamav-unofficial-sigs.sh" via. cron every hour -
and it's the reload invoked by that script that sometimes triggers the
segfault.
I'll examine my logs to see if I can narrow down on any specific
DB-Update that might cause the fault.
And thanks for your reply :)
Best regards
Michael
On 09/25/2017 04:53 PM, Steven Morgan wrote:
> Michael,
>
> Sorry for not replying sooner. I reviewed the segfault, gdb output, and
> code on Friday. Are you able to reproduce the problem with 'clamdscan
> --reload'?
>
> Thanks,
> Steve
>
> On Sun, Sep 24, 2017 at 8:10 AM, Michael D. <clamav at cosis.dk> wrote:
>
>> Hi,
>>
>> I twice tried to reach out to the ClamAV Developers regarding this error,
>> but been ignored.
>>
>> Anyone?
>>
>> Best regards
>>
>> Michael
>>
>>
>> Latest segfaults since rebooting 8 days ago:
>>
>> Sep 21 16:42:49 Boomer kernel: clamd[4208]: segfault at 7f27d5dd7780 ip
>> 00007f27c56650b2 sp 00007ffd818b8280 error 4 in
>> libclamav.so.7.1.1[7f27c562b000+1cf000]
>> Sep 21 21:39:25 Boomer kernel: clamd[8589]: segfault at 14cf977 ip
>> 00007f64092b7086 sp 00007ffc215e33c0 error 4 in
>> libclamav.so.7.1.1[7f640927d000+1cf000]
>> Sep 22 10:39:26 Boomer kernel: clamd[28493]: segfault at 15f56e6 ip
>> 00007fbcbed4c086 sp 00007ffd451b9ff0 error 4 in
>> libclamav.so.7.1.1[7fbcbed12000+1cf000]
>> Sep 22 17:40:35 Boomer kernel: clamd[26125]: segfault at 2c561cd ip
>> 00007fb8586691c5 sp 00007fffee7a7cd8 error 4 in
>> libclamav.so.7.1.1[7fb8585aa000+1cf000]
>> Sep 23 06:38:17 Boomer kernel: clamd[29676]: segfault at f2e99de ip
>> 00007f9f243090b2 sp 00007ffd90a09bf0 error 4 in
>> libclamav.so.7.1.1[7f9f242cf000+1cf000]
>> Sep 23 18:38:53 Boomer kernel: clamd[20460]: segfault at 32de7d5 ip
>> 00007f3f518481c5 sp 00007ffda4178b98 error 4 in
>> libclamav.so.7.1.1[7f3f51789000+1cf000]
>> Sep 23 23:42:25 Boomer kernel: clamd[9637]: segfault at 33ac956 ip
>> 00007fc4ddb881c5 sp 00007ffe1457f378 error 4 in
>> libclamav.so.7.1.1[7fc4ddac9000+1cf000]
>> Sep 24 09:38:53 Boomer kernel: clamd[13548]: segfault at 6 ip
>> 00007f28bbbbc1c5 sp 00007fffb209c748 error 4 in
>> libclamav.so.7.1.1[7f28bbafd000+1cf000]
>> Sep 24 11:44:37 Boomer kernel: clamd[17253]: segfault at 6 ip
>> 00007f3af21b41c5 sp 00007ffe2c059ad8 error 4 in
>> libclamav.so.7.1.1[7f3af20f5000+1cf000]
>> Sep 24 13:42:53 Boomer kernel: clamd[22657]: segfault at 1c0d12b ip
>> 00007efbfdf2f1c5 sp 00007fff0b092628 error 4 in
>> libclamav.so.7.1.1[7efbfde70000+1cf000]
>>
>>
>>
>> On 09/22/2017 05:50 PM, Michael D. wrote:
>>
>>> Hi,
>>>
>>> The Clamd process still SegFault on reload after upgrading to
>>> 0.99.3-beta1.
>>>
>>> Sep 21 16:42:49 Boomer kernel: clamd[4208]: segfault at 7f27d5dd7780 ip
>>> 00007f27c56650b2 sp 00007ffd818b8280 error 4 in
>>> libclamav.so.7.1.1[7f27c562b000+1cf000]
>>> Sep 21 21:39:25 Boomer kernel: clamd[8589]: segfault at 14cf977 ip
>>> 00007f64092b7086 sp 00007ffc215e33c0 error 4 in
>>> libclamav.so.7.1.1[7f640927d000+1cf000]
>>> Sep 22 10:39:26 Boomer kernel: clamd[28493]: segfault at 15f56e6 ip
>>> 00007fbcbed4c086 sp 00007ffd451b9ff0 error 4 in
>>> libclamav.so.7.1.1[7fbcbed12000+1cf000]
>>>
>>> Anything I can do to help narrowing down on the fault?
>>>
>>> Best regards
>>> Michael
>>>
>>>
>>> On 07/03/2017 12:50 PM, Michael D. wrote:
>>>
>>>> Hi,
>>>>
>>>> I've been running the Development Version of ClamAV for a while, and the
>>>> only problem I've encountered is that sometimes when it's instructed to
>>>> reload the databases (clamscan --reload) it SegFaults:
>>>>
>>>> Jun 18 15:25:04 Boomer kernel: clamd[3414]: segfault at 1de2 ip
>>>> 00007f618669d345 sp 00007ffe57c51d28 error 4 in
>>>> libclamav.so.7.1.1[7f61865e0000+1b7000]
>>>> Jun 19 01:44:17 Boomer kernel: clamd[3423]: segfault at 15f0d1 ip
>>>> 00007f30e1010345 sp 00007ffdb449ccb8 error 4 in
>>>> libclamav.so.7.1.1[7f30e0f53000+1b7000]
>>>> Jun 30 22:41:08 Boomer kernel: clamd[3723]: segfault at 748334 ip
>>>> 00007f16a9c04066 sp 00007ffc68399d80 error 4 in
>>>> libclamav.so.7.1.1[7f16a9bca000+1cf000]
>>>>
>>>> To get more information I installed gdb, and ran it like this:
>>>>
>>>> root at Boomer [ ~ ]# gdb /usr/sbin/clamd
>>>> gdb) run --debug -c /etc/clamav/clamd.conf
>>>> Starting program: /usr/sbin/clamd --debug -c /etc/clamav/clamd.conf
>>>> warning: Unable to find libthread_db matching inferior's thread library,
>>>> thread debugging will not be available.
>>>> LibClamAV debug: Initialized devel-clamav-0.99-beta1-683-g5a0b148b4
>>>> engine
>>>> LibClamAV debug: Initializing phishcheck module
>>>> <snip>
>>>>
>>>>
>>>> After a while I got this: (Along with a Core Dump)
>>>>
>>>> $Received POLLIN|POLLHUP on fd 7
>>>> $fds_poll_recv: timeout after 5 seconds
>>>> $Received POLLIN|POLLHUP on fd 11
>>>> $got command RELOAD (7, 2), argument:
>>>> $Receive thread: closing conn (FD 11), group finished
>>>> $Consumed entire command
>>>>
>>>> Thread 1 "clamd" received signal SIGSEGV, Segmentation fault.
>>>> mpool_free (mp=0x7ffff7fa6000, ptr=0x100000000) at mpool.c:698
>>>> 698 f = allocbase_fromfrag(f);
>>>> (gdb)
>>>> (gdb)
>>>> (gdb)
>>>> (gdb) bt
>>>> #0 mpool_free (mp=0x7ffff7fa6000, ptr=0x100000000) at mpool.c:698
>>>> #1 0x00007ffff7a2c038 in hm_free (root=root at entry=0x7ffff5289168) at
>>>> matcher-hash.c:315
>>>> #2 0x00007ffff7a3d242 in cl_engine_free (engine=engine at entry=0x6b9b40)
>>>> at readdb.c:4989
>>>> #3 0x000000000040e65d in reload_db (ret=<synthetic pointer>,
>>>> do_check=0, opts=0x62e010, dboptions=8202, engine=0x6b9b40) at
>>>> server-th.c:197
>>>> #4 recvloop_th (socketds=0x6bbdc0, nsockets=2, engine=0x6b9b40,
>>>> dboptions=dboptions at entry=8202, opts=0x62e010) at server-th.c:1502
>>>> #5 0x0000000000405aaa in main (argc=<optimized out>, argv=<optimized
>>>> out>) at clamd.c:800
>>>> (gdb)
>>>>
>>>> Can you use this information for anything?
>>>>
>>>> Any other commands I could run to gather more info?
>>>>
>>>> Best Regards
>>>>
>>>> Michael
>>>>
>>>> System Info:
>>>>
>>>> Dist: LFS-8.0 64-Bit
>>>> Kernel: 4.11.7
>>>> GCC-6.3.0
>>>> ClamAV devel-clamav-0.99-beta1-683-g5a0b148b4/23529
>>>>
>>>> root at Boomer [ ~ ]# ldd /usr/sbin/clamd
>>>> linux-vdso.so.1 (0x00007fff6d116000)
>>>> libclamav.so.7 => /usr/lib/libclamav.so.7 (0x00007f5ed4f1c000)
>>>> libxml2.so.2 => /usr/lib/libxml2.so.2 (0x00007f5ed4bb7000)
>>>> liblzma.so.5 => /lib/liblzma.so.5 (0x00007f5ed4991000)
>>>> libbz2.so.1.0 => /lib/libbz2.so.1.0 (0x00007f5ed4781000)
>>>> libltdl.so.7 => /usr/lib/libltdl.so.7 (0x00007f5ed4577000)
>>>> libdl.so.2 => /lib/libdl.so.2 (0x00007f5ed4373000)
>>>> libssl.so.1.0.0 => /usr/lib/libssl.so.1.0.0 (0x00007f5ed4100000)
>>>> libcrypto.so.1.0.0 => /usr/lib/libcrypto.so.1.0.0
>>>> (0x00007f5ed3cab000)
>>>> libz.so.1 => /lib/libz.so.1 (0x00007f5ed3a8f000)
>>>> libpcre2-8.so.0 => /usr/lib/libpcre2-8.so.0 (0x00007f5ed3843000)
>>>> libm.so.6 => /lib/libm.so.6 (0x00007f5ed3530000)
>>>> libpthread.so.0 => /lib/libpthread.so.0 (0x00007f5ed3312000)
>>>> libc.so.6 => /lib/libc.so.6 (0x00007f5ed2f6e000)
>>>> /lib64/ld-linux-x86-64.so.2 (0x00007f5ed5304000)
>>>> root at Boomer [ ~ ]#
>>>>
>>>>
>>>> _______________________________________________
>>>> http://lurker.clamav.net/list/clamav-devel.html
>>>> Please submit your patches to our Bugzilla: http://bugs.clamav.net
>>>>
>>>> http://www.clamav.net/contact.html#ml
>>>>
>>> _______________________________________________
>>> http://lurker.clamav.net/list/clamav-devel.html
>>> Please submit your patches to our Bugzilla: http://bugs.clamav.net
>>>
>>> http://www.clamav.net/contact.html#ml
>>>
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>>
>>
>> Help us build a comprehensive ClamAV guide:
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>>
>> http://www.clamav.net/contact.html#ml
>>
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