Hi stable team,

I would like to request for cherry picking to the linux-6.1.y branch: 19098934f910 ("PCI: mt7621: Add sentinel to quirks table") a2cab953b4c0 ("mips: ralink: mt7621: define MT7621_SYSC_BASE with __iomem") b4767d4c0725 ("mips: ralink: mt7621: soc queries and tests as functions") 7c18b64bba3b ("mips: ralink: mt7621: do not use kzalloc too early")

On the mips mt7621 SoC, a kzalloc is used too early and returns before reaching a soc_device_register. soc_device_attribute->revision is used to identify MT7621 ver:1 eco:1 devices for a pci & phy-pci quirk. A SLUB change in kernel 6.1 caused the device to fail to boot, rather than silently continue.

In fixing this, it was then seen that the pci & phy-pci drivers would oops, as they were missing a sentinel in their soc_device_match quirks table. The phy-pci fix has already been applied to stable. The pci & early kzalloc fixes missed the 6.1rc window and are being taken for 6.2

In a quick web search I cannot find any reference to bootlogs for "ver:1 eco:1" (which would use the quirk for PCI), so cannot see a current need to backport this further than fixing the 6.1 boot error.

Link: https://lore.kernel.org/linux-mm/becf2ac3-2a90-4f3a-96d9-a70f67c66e4a@app.fa... Link: https://lore.kernel.org/lkml/20221205204645.301301-1-git@johnthomson.fastmai... Link: https://lore.kernel.org/lkml/20221114015658.2873120-1-git@johnthomson.fastma...

cc'ed the maintainer, Sergio.

Thank you,

Cheers,