On 07/28/2018 12:58 AM, Minchan Kim wrote:
I made a mistake on previous patch.
Could you test this patches?
Thanks! Looking good so far! No errors whatsoever with the new patch. I
will let my test workload running for while to be sure, but I think we
are good.
--
Kind regards,
Tino Lehnig
On 07/27/2018 02:05 PM, Minchan Kim wrote:
And bad page is always with writeback enable?
writeback enable means "echo "some dev" > /sys/block/zram0/backing_dev,
not just enable CONFIG_ZRAM_WRITEBACK.
Yes, the bug only appears when backing_dev is set.
--
Kind regards,
Tino Lehnig
fd3b9b13000
[ 809.149570] Disabling lock debugging due to kernel taint
--
Kind regards,
Tino Lehnig
[ 967.079158] R10: 003b83305f306bdf R11: 0246 R12:
[ 967.079158] R13: 7f44157ad000 R14: 0000 R15:
55c5a36f8e50
[ 967.079160] Disabling lock debugging due to kernel taint
--
Kind regards,
Tino Lehnig
On 07/26/2018 08:10 AM, Tino Lehnig wrote:
A thing I could imagine is
[0bcac06f27d75, skip swapcache for swapin of synchronous device]
It was merged into v4.15. Could you check it by bisecting?
Thanks, I will check that.
So I get the same behavior as in v4.15-rc1 after this commit. All prior
in the default Ubuntu kernel configuration.
--
Kind regards,
Tino Lehnig
, 32 GB of swap with zram and a 32 GB SSD as backing device. I had
to start only one Windows VM with "-m 32768" to trigger the bug.
--
Kind regards,
Tino Lehnig
0
Hugepagesize: 2048 kB
DirectMap4k: 75136 kB
DirectMap2M:10295296 kB
DirectMap1G:260046848 kB
--
Kind regards,
Tino Lehnig
000
[ 170.708617] R13: 7fc9e9ed5000 R14: R15:
55dbb5f263e0
[ 170.708618] Disabling lock debugging due to kernel taint
--
Kind regards,
Tino Lehnig
4400.00
clflush size: 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
--
Kind regards,
Tino Lehnig
config-4.18.0-rc5+.gz
Description: application/gzip
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