The fix is not in upstream 5.11 stable...
So maybe send SRU to ubuntu kernel to include the fix:
https://wiki.ubuntu.com/Kernel/Dev/StablePatchFormat
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This happens for me if zswap was enabled with zsmalloc pool.
ref: https://www.spinics.net/lists/linux-mm/msg245604.html
For 20.04 hwe, this also affects 5.11.0.25 but previous hwe 5.8.0.x were
not affected.
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I can reproduce the bug on -22 and -25 kernels. Here are almost full
dmesg logs. You can see SSD errors where swap is placed. This issue may
be related to them somehow. To exclude hardware element of errors, I
will try other more recent laptop or VirtualBox.
Steps:
1. sudo mount -t tmpfs -o mode
** Attachment added: "eatmem.c"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939996/+attachment/5518108/+files/eatmem.c
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** Attachment added: "dmesg_0859.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939996/+attachment/5518107/+files/dmesg_0859.log
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Did this issue happen on previous kernels?
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https://bugs.launchpad.net/bugs/1939996
Title:
kernel BUG at mm/zswap.c:1275
Status in linux package in Ubuntu:
New
Bug desc
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