On Tue, Jan 26, 2021 at 06:57:18PM +0300, Mika Westerberg wrote: > From: Mario Limonciello <mario.limonciello@xxxxxxxx> > > When we walk up the device hierarchy in tb_acpi_add_link() make sure we > break the loop if the device has no parent. Otherwise we may crash the > kernel by dereferencing a NULL pointer. > > Fixes: b2be2b05cf3b ("thunderbolt: Create device links from ACPI description") > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxxx> > Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Applied this one separately to thunderbolt.git/fixes.