Commit a1a81b54 authored by Huacai Chen's avatar Huacai Chen
Browse files

LoongArch: Make relocate_new_kernel_size be a .quad value 



Now relocate_new_kernel_size is a .long value, which means 32bit, so its
high 32bit is undefined. This causes memcpy((void *)reboot_code_buffer,
relocate_new_kernel, relocate_new_kernel_size) in machine_kexec_prepare()
access out of range memories in some cases, and then end up with an ADE
exception.

So make relocate_new_kernel_size be a .quad value, which means 64bit, to
avoid such errors.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarHuacai Chen <chenhuacai@loongson.cn>
parent 41fee4f0

arch/loongarch/kernel/relocate_kernel.S

+1 −1
Original line number Diff line number Diff line
@@ -109,4 +109,4 @@ SYM_CODE_END(kexec_smp_wait) 
relocate_new_kernel_end:



	.section ".data"

SYM_DATA(relocate_new_kernel_size, .long relocate_new_kernel_end - relocate_new_kernel)
 
SYM_DATA(relocate_new_kernel_size, .quad relocate_new_kernel_end - relocate_new_kernel)