5.15.0-52 does not see USB block device

Bug #1996116 reported by Maftei Alexandru-Mihai
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-hwe-5.15 (Ubuntu)
New
Undecided
Unassigned

Bug Description

I've got a server that boots off a microSD card connected to a USB reader (HPE ProLiant DL380p Gen8, if relevant).
The bootloader (GRUB) and rootfs are both on that microSD card.
The BIOS boots it just fine, GRUB runs and has no issues loading the kernel and initrd.
However, once the kernel loads, it doesn't see the microSD card anymore.
As far as I can tell, the reader shows up in `dmesg`, it's just that no block device enumerates.
I had to revert to 5.15.0-46 (which is the only other kernel I had installed) in order to boot up my server properly.

I've tried different microSD cards and different USB-connected readers for them, and nothing changed.

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