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mips: Move initrd_start check after initrd address sanitisation.

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[ Upstream commit 4897a898a2 ]

PAGE_OFFSET is technically a virtual address so when checking the value of
initrd_start against it we should make sure that it has been sanitised from
the values passed by the bootloader. Without this change, even with a bootloader
that passes correct addresses for an initrd, we are failing to load it on MT7621
boards, for example.

Signed-off-by: Liviu Dudau <liviu@dudau.co.uk>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Liviu Dudau
2023-05-09 18:29:21 +01:00
committed by Greg Kroah-Hartman
parent 5fc220360e
commit 0b930fa315
1 changed files with 5 additions and 4 deletions
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9
arch/mips/kernel/setup.c
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@@ -158,10 +158,6 @@ static unsigned long __init init_initrd(void)
pr_err("initrd start must be page aligned\n"); pr_err("initrd start must be page aligned\n");
goto disable; goto disable;
} }
if (initrd_start < PAGE_OFFSET) {
pr_err("initrd start < PAGE_OFFSET\n");
goto disable;
}
/* /*
* Sanitize initrd addresses. For example firmware * Sanitize initrd addresses. For example firmware
@@ -174,6 +170,11 @@ static unsigned long __init init_initrd(void)
initrd_end = (unsigned long)__va(end); initrd_end = (unsigned long)__va(end);
initrd_start = (unsigned long)__va(__pa(initrd_start)); initrd_start = (unsigned long)__va(__pa(initrd_start));
if (initrd_start < PAGE_OFFSET) {
pr_err("initrd start < PAGE_OFFSET\n");
goto disable;
}
ROOT_DEV = Root_RAM0; ROOT_DEV = Root_RAM0;
return PFN_UP(end); return PFN_UP(end);
disable: disable: