kexec-tools/x86: get_kernel_vaddr_and_size off-by-one fix

I got below error while tesing kexec -p:
"Can't find kernel text map area from kcore"

The case is the pt_load start addr was same as stext_sym. The checking
code should really be saddr <= stext_sym so that the right pt_load area
includes stext_sym can be matched.

This was not reported by people previously because it will fail over to
use hardcode X86_64__START_KERNEL_map to match the pt_load areas again
in later code and it sometimes succeeds because of kernel address
randomization.

With this change according to my test stext_sym checking can garantee
falling into right pt_load area if we get correct stext_sym.

Signed-off-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

0 files changed, 0 insertions, 0 deletions