ralink mt7621 attempts to use kzalloc before normal memory management is available. Before v6.1-rc1, mt7621.c soc_dev_init silently failed to kzalloc and returned immediately afterwards, continuing to boot without the SOC_BUS device registered. After, (with CONFIG_SLUB) kernel crashes before it outputs any console messages This was bisected to an mm/slub change (detailed in patch 3) This change exposed oops in the quirks tables in the mt7621 phy-pci & pci-controller drivers. The phy-pci quirk fix got into -rc5, but the pci-controller quirk fix has not been picked up yet. https://lore.kernel.org/lkml/20221114012036.2870067-1-git@xxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#u This is mentioned in patch 3 as: not yet applied ("PCI: mt7621: add sentinel to quirks table") Changes from RFC https://lore.kernel.org/lkml/20221103050538.1930758-1-git@xxxxxxxxxxxxxxxxxxxxxxxxxxx/T/#u to v1: 1/3: cut the CPHYSADDR to match the line moved to the header file 2/3: No useless const unsigned {int,bool} function declarations (thanks kernel test robot) 3/3: static struct *soc_info_ptr Mention fixed phy-pci & (unapplied) pci-controller quirks sentinels Add fixes tag Cheers, John
