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| author |   Alex Williamson <alex.williamson@redhat.com> | 2021-11-08 11:03:57 -0700 |
|---|---|---|
| committer |   Hans de Goede <hdegoede@redhat.com> | 2021-11-16 10:56:53 +0100 |
| commit | 812fcc609502096e98cc3918a4b807722dba8fd9 (patch) | |
| tree | e33425a79656bebbf652cfc099e3fbfcdeb8bcfe /drivers/platform/x86/think-lmi.h | |
| parent | platform/x86: dell-wmi-descriptor: disable by default (diff) | |
| download | linux-dev-812fcc609502096e98cc3918a4b807722dba8fd9.tar.xz linux-dev-812fcc609502096e98cc3918a4b807722dba8fd9.zip | |
platform/x86: think-lmi: Abort probe on analyze failure
A Lenovo ThinkStation S20 (4157CTO BIOS 60KT41AUS) fails to boot on
recent kernels including the think-lmi driver, due to the fact that
errors returned by the tlmi_analyze() function are ignored by
tlmi_probe(), where tlmi_sysfs_init() is called unconditionally.
This results in making use of an array of already freed, non-null
pointers and other uninitialized globals, causing all sorts of nasty
kobject and memory faults.
Make use of the analyze function return value, free a couple leaked
allocations, and remove the settings_count field, which is incremented
but never consumed.
Fixes: a40cd7ef22fb ("platform/x86: think-lmi: Add WMI interface support on Lenovo platforms")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Mark Gross <markgross@kernel.org>
Reviewed-by: Mark Pearson <markpearson@lenovo.com>
Link: https://lore.kernel.org/r/163639463588.1330483.15850167112490200219.stgit@omen
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/think-lmi.h')
| -rw-r--r-- | drivers/platform/x86/think-lmi.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/platform/x86/think-lmi.h b/drivers/platform/x86/think-lmi.h index f8e26823075f..2ce5086a5af2 100644 --- a/drivers/platform/x86/think-lmi.h +++ b/drivers/platform/x86/think-lmi.h @@ -55,7 +55,6 @@ struct tlmi_attr_setting { struct think_lmi { struct wmi_device *wmi_device; - int settings_count; bool can_set_bios_settings; bool can_get_bios_selections; bool can_set_bios_password; |