[mythtv-users] Random system freezes -- clueless

Craig Huff huffcslists at gmail.com
Sun Dec 20 19:22:47 UTC 2015


Okay, I have a clue. Now what to do with it?

I found "general protection fault" and "Oops" messages while trolling
through the /var/log/kern.log* and /var/log/syslog* files.  Here are the
ten I found in the kern.log* files over the last ~30 days and the following
RIP: lines that indicate where the problems occurred:

Nov 25 21:40:32 penguin kernel: [101907.758881] general protection fault:
0000 [#1] SMP
Nov 25 21:40:32 penguin kernel: [101907.770634] RIP:
0010:[<ffffffff81087592>]  [<ffffffff81087592>] find_pid_ns+0x92/0xc0

Dec  5 18:34:41 penguin kernel: [ 1140.280943] general protection fault:
0000 [#1] SMP
Dec  5 18:34:41 penguin kernel: [ 1140.296076] RIP:
0010:[<ffffffff81087592>]  [<ffffffff81087592>] find_pid_ns+0x92/0xc0

Dec  5 18:34:45 penguin kernel: [ 1144.400283] general protection fault:
0000 [#2] SMP
Dec  5 18:34:45 penguin kernel: [ 1144.417924] RIP:
0010:[<ffffffff81087592>]  [<ffffffff81087592>] find_pid_ns+0x92/0xc0

Dec 11 01:01:01 penguin kernel: [ 7524.783834] general protection fault:
0000 [#1] SMP
Dec 11 01:01:01 penguin kernel: [ 7524.784155] RIP:
0010:[<ffffffff81162037>]  [<ffffffff81162037>] page_evictable+0x17/0x40

Dec 11 06:14:33 penguin kernel: [ 9565.507236] general protection fault:
0000 [#1] SMP
Dec 11 06:14:33 penguin kernel: [ 9565.507890] RIP:
0010:[<ffffffff81162037>]  [<ffffffff81162037>] page_evictable+0x17/0x40

Dec 11 19:43:01 penguin kernel: [11447.492095] general protection fault:
0000 [#1] SMP
Dec 11 19:43:01 penguin kernel: [11447.492586] RIP:
0010:[<ffffffff81162037>]  [<ffffffff81162037>] page_evictable+0x17/0x40

Dec 12 10:28:17 penguin kernel: [   53.135696] Oops: 0000 [#1] SMP
Dec 12 10:28:17 penguin kernel: [   53.136108] RIP:
0010:[<ffffffff811866c4>]  [<ffffffff811866c4>] anon_vma_fork+0xa4/0x140

Dec 20 05:05:32 penguin kernel: [  592.633393] general protection fault:
0000 [#1] SMP
Dec 20 05:05:32 penguin kernel: [  592.682342] RIP:
0010:[<ffffffff810875f2>]  [<ffffffff810875f2>] find_pid_ns+0x92/0xc0

Dec 20 11:22:22 penguin kernel: [  212.770621] Oops: 0002 [#1] SMP
Dec 20 11:22:22 penguin kernel: [  212.794726] RIP:
0010:[<ffffffff81186310>]  [<ffffffff81186310>] unlink_anon_vmas+0xf0/0x200

Dec 20 12:06:59 penguin kernel: [ 2890.593387] Oops: 0002 [#2] SMP
Dec 20 12:06:59 penguin kernel: [ 2890.612896] RIP:
0010:[<ffffffff81186310>]  [<ffffffff81186310>] unlink_anon_vmas+0xf0/0x200


I have a sinking feeling that my CPU is bad, but how do I test it to prove
that is the case?  I've seen mentions of running programs (xxx Sieve xxx?)
but I don't know what they were, where to get them (apt-get xxx?), or if
there's parameter settings to address for best testing.

OTOH, it might be the RAM, but I'd have to take Myth off-line for more than
12 hours (max time I've tried so far to run memtest86+) which didn't turn
up any errors.

Any suggestions?  Need a bigger piece of the log for one/several/all of
these?

--
Craig.
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