On 01/08/2019 11:20 PM, Song Liu wrote:
> As Naresh reported, test_stacktrace_build_id() causes panic on i386 and
> arm32 systems. This is caused by page_address() returns NULL in certain
> cases.
>
> This patch fixes this error by using kmap_atomic/kunmap_atomic instead
> of page_address.
>
> Fixes: 615755a77b24 (" bpf: extend stackmap to save binary_build_id+offset
> instead of address")
> Reported-by: Naresh Kamboju <naresh.kamb...@linaro.org>
> Signed-off-by: Song Liu <songliubrav...@fb.com>
Looks correct to me, and in this case as per API the assumption is allowed
that k[un]map_atomic() won't fail. I've applied it to bpf, if Naresh still
replies with a Tested-by in time, I'll add it as well to the commit.
