A few minutes ago Firefox crashed again several times in a row. This is
the tail of /var/log/kern.log right now (lots of times):

e_~dThread[15841]: segfault at 0 ip 00007fc94cabac91 sp 00007fc944914ac0 error 
6 in libxul.so[7fc949715000+48b5000]
Nov 15 11:37:12 x1cbn kernel: [ 8970.728562] Code: 8b 0d eb 70 3f 03 48 89 01 
c7 04 25 00 00 00 00 73 01 00 00 e8 50 60 c6 fc 48 8d 05 9d b7 65 01 48 8b 0d 
ca 70 3f 03 48 89 01 <c7> 04 25 00 00 00 00 6d 0a 00 00 e8 2f 60 c6 fc 66 2e 0f 
1f 84 00


I had a look into disabling zswap but I'm not sure if it is actually enabled 
right now

   $ dmesg | grep zswap
   [    2.526856] zswap: loaded using pool lzo/zbud


   $ grep -R . /sys/module/zswap/parameters/
   /sys/module/zswap/parameters/same_filled_pages_enabled:Y
   /sys/module/zswap/parameters/enabled:N
   /sys/module/zswap/parameters/max_pool_percent:20
   /sys/module/zswap/parameters/compressor:lzo
   /sys/module/zswap/parameters/zpool:zbud


** Attachment added: "kern.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1802283/+attachment/5213078/+files/kern.log

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Title:
  system freezes

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