On 2020/6/19 7:43, Gao Xiang wrote:
From: Gao Xiang hsiangkao@redhat.com
Hongyu reported "id != index" in z_erofs_onlinepage_fixup() with specific aarch64 environment easily, which wasn't shown before.
After digging into that, I found that high 32 bits of page->private was set to 0xaaaaaaaa rather than 0 (due to z_erofs_onlinepage_init behavior with specific compiler options). Actually we only use low 32 bits to keep the page information since page->private is only 4 bytes on most 32-bit platforms. However z_erofs_onlinepage_fixup() uses the upper 32 bits by mistake.
Let's fix it now.
Reported-by: Hongyu Jin hongyu.jin@unisoc.com Fixes: 3883a79abd02 ("staging: erofs: introduce VLE decompression support") Cc: stable@vger.kernel.org # 4.19+ Signed-off-by: Gao Xiang hsiangkao@redhat.com
Reviewed-by: Chao Yu yuchao0@huawei.com
Thanks,