Re: zram: Regression in at least linux-6.1.y tree

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On (25/01/07 20:48), Kenneth Van Alstyne wrote:
> Kernel 6.1.122 introduced a regression via commit
> ac3b5366b9b7c9d97b606532ceab43d2329a22f3 (backport of upstream
> commit 74363ec674cb172d8856de25776c8f3103f05e2f)

We better drop that patch from stable, I didn't want it to be
in stable because the patch didn't fix any real issues that
affected any users.

> in drivers/block/zram/zram_drv.c where attempting to set the size
> of /dev/zram0 after loading the zram kernel module results in a
> kernel NULL pointer dereference.

[..]

> Steps to reproduce:
> 
> 	modprobe zram
> 	zramctl /dev/zram0 --algorithm zstd --size 83886080k

Not sure if "regression" is the right word, that zramctl is deemed
to fail, it's just on older kernels error-out path is now oops-y.
Regardless of that, we better drop that patch.




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