tree 09e447a00f1f8a8b0f83dcf9de72955a1798c1b1
parent df7ecce842b846a04d087ba85fdb79a90e26a1b0
author Oleksandr Tymoshenko <ovt@google.com> 1711175613 +0000
committer Ard Biesheuvel <ardb@kernel.org> 1711268913 +0100

efi: fix panic in kdump kernel

Check if get_next_variable() is actually valid pointer before
calling it. In kdump kernel this method is set to NULL that causes
panic during the kexec-ed kernel boot.

Tested with QEMU and OVMF firmware.

Fixes: bad267f9e18f ("efi: verify that variable services are supported")
Signed-off-by: Oleksandr Tymoshenko <ovt@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>