6.6-stable review patch. If anyone has any objections, please let me know.
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From: Huacai Chen chenhuacai@loongson.cn
commit 9fa304b9f8ec440e614af6d35826110c633c4074 upstream.
The unflatten_and_copy_device_tree() function contains a call to memblock_alloc(). This means that memblock is allocating memory before any of the reserved memory regions are set aside in the arch_mem_init() function which calls early_init_fdt_scan_reserved_mem(). Therefore, there is a possibility for memblock to allocate from any of the reserved memory regions.
Hence, move the call to early_init_fdt_scan_reserved_mem() to be earlier in the init sequence, so that the reserved memory regions are set aside before any allocations are done using memblock.
Cc: stable@vger.kernel.org Fixes: 88d4d957edc707e ("LoongArch: Add FDT booting support from efi system table") Signed-off-by: Oreoluwa Babatunde quic_obabatun@quicinc.com Signed-off-by: Huacai Chen chenhuacai@loongson.cn Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/loongarch/kernel/setup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/loongarch/kernel/setup.c +++ b/arch/loongarch/kernel/setup.c @@ -367,6 +367,8 @@ void __init platform_init(void) acpi_gbl_use_default_register_widths = false; acpi_boot_table_init(); #endif + + early_init_fdt_scan_reserved_mem(); unflatten_and_copy_device_tree();
#ifdef CONFIG_NUMA @@ -400,8 +402,6 @@ static void __init arch_mem_init(char **
check_kernel_sections_mem();
- early_init_fdt_scan_reserved_mem(); - /* * In order to reduce the possibility of kernel panic when failed to * get IO TLB memory under CONFIG_SWIOTLB, it is better to allocate