Re: Null dereference in raid10_size, I/O lockup afterwards

[ValdikSS <iam@xxxxxxxxxxxxxxx>]

On 05.10.2024 04:35, ValdikSS wrote:
> Fedora 39 with 6.10.11-100.fc39 kernel dereferences NULL in raid10_size 
> and locks up with 3-drive raid10 configuration upon its degradation and 
> reattachment.
>
> How to reproduce:
>
> 1. Get 3 USB flash drives
> 2. mdadm --create -b internal -l 10 -n 3 -z 1G /dev/md0 /dev/sda 
> /dev/sdb /dev/sdc
> 3. Unplug 2 USB drives
> 4. Plug one of the drive again
>
> Happens every time, every USB flash reattachment.

Reproduced on 6.11.2-250.vanilla.fc39.x86_64

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