diff options
| author | Huacai Chen <chenhuacai@loongson.cn> | 2025-08-03 22:49:47 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2025-08-03 22:49:47 +0800 |
| commit | a1a81b5477196ca1290b367404a461e046e647d5 (patch) | |
| tree | d6696f31c78c642316a121c5ffd8c3fdc26b99c6 | |
| parent | 41fee4f0036734bec427659f749e44cfe1821565 (diff) | |
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: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/kernel/relocate_kernel.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/loongarch/kernel/relocate_kernel.S b/arch/loongarch/kernel/relocate_kernel.S index 84e6de2fd973..8b5140ac9ea1 100644 --- a/arch/loongarch/kernel/relocate_kernel.S +++ b/arch/loongarch/kernel/relocate_kernel.S @@ -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) |