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After retrieving WMI data blocks in sysfs callbacks, check for the
validity of them before dereferencing their content.
Reported-by: Jan Graczyk <[email protected]>
Closes: https://lore.kernel.org/r/CAHk-=wgMiSKXf7SvQrfEnxVtmT=QVQPjJdNjfm3aXS7wc=rzTw@mail.gmail.com/
Fixes: e8a60aa7404b ("platform/x86: Introduce support for Systems Management Driver over WMI for Dell Systems")
Suggested-by: Linus Torvalds <[email protected]>
Reviewed-by: Armin Wolf <[email protected]>
Signed-off-by: Kurt Borja <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Ilpo Järvinen <[email protected]>
Signed-off-by: Ilpo Järvinen <[email protected]>
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1. Check acpi type before assignment of each property value
2. Add boundary check for properties count
Co-developed-by: Divya Bharathi <[email protected]>
Signed-off-by: Divya Bharathi <[email protected]>
Signed-off-by: Prasanth KSR <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Hans de Goede <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
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multiple times
During some of the error-exit paths it is possible that
release_attributes_data() will get called multiple times,
which results in exit_foo_attributes() getting called multiple
times.
Make it safe to call exit_foo_attributes() multiple times,
avoiding double-free()s in this case.
Note that release_attributes_data() really should only be called
once during error-exit paths. This will be fixed in a separate patch
and it is good to have the exit_foo_attributes() functions modified
this way regardless.
Fixes: e8a60aa7404b ("platform/x86: Introduce support for Systems Management Driver over WMI for Dell Systems")
Cc: Divya Bharathi <[email protected]>
Cc: Mario Limonciello <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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A user without a Dell system doesn't need to pick any of these
drivers.
Users with a Dell system can enable this submenu and all drivers
behind it will be enabled.
Suggested-by: Andy Shevchenko <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Hans de Goede <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
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