[mythtv-users] Floating point exception in mythbackend

Scott Simpson petropolis100 at me.com
Wed Dec 27 01:46:15 UTC 2023


On 12/26/2023 8:39 PM, Stephen Worthington wrote:
> On Tue, 26 Dec 2023 16:14:44 -0500, you wrote:
> 
>> mythtv-backend/jammy,now 2:34.0~master.202312242252.4f10629ff3~ubuntu22.04.1
>> libmythtv-perl/jammy,jammy,now
>> 2:34.0~master.202312242252.4f10629ff3~ubuntu22.04.1
>> /etc/os-release: VERSION="22.04.3 LTS (Jammy Jellyfish)"
>>
>> I hadn't updated my mythtv packages since last May. I updated yesterday
>> using the repository at http://ppa.launchpad.net/mythbuntu/34/ubuntu
>> (version updated to above) and when I run mythbackend now I get a
>> floating point exception (in gdb):
>>
>> 2023-12-26 15:52:32.840003 I  MainServer: adding: mythtv(555555dfb300)
>> as a client (events: 1)
>>
>> Thread 6 "TVRecEvent" received signal SIGFPE, Arithmetic exception.
>> [Switching to Thread 0x7fffe27fe640 (LWP 69577)]
>> 0x00007ffff7969d14 in ?? () from /lib/libmythtv-34.so.34
>> (gdb) where
>> #0  0x00007ffff7969d14 in ?? () from /lib/libmythtv-34.so.34
>> #1  0x00007ffff79bffb8 in TVRec::run() () from /lib/libmythtv-34.so.34
>> #2  0x00007ffff6e997a3 in ?? () from /lib/libmythbase-34.so.34
>> #3  0x00007ffff58ccca1 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
>> #4  0x00007ffff5094ac3 in start_thread (arg=<optimized out>) at
>> ./nptl/pthread_create.c:442
>> #5  0x00007ffff5126660 in clone3 () at
>> ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
>> (gdb) quit
>>
>> Is this a known problem? I don't have a mythbackend with symbols
>> unfortunately.
> 
> v34 is the master (development) version.  The latest stable release
> version is v33.1.  So were you really wanting to use the master
> version, which is subject to changes and bugs while under development?

No. I screwed up. I downgraded to 33 and it works. Sorry about the 
alarm. However, be aware that there is a bug in 34.
Scott


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