thermal: of: fix double-free on unregistration

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commit ac4436a5b2 upstream.

Since commit 3d439b1a2a ("thermal/core: Alloc-copy-free the thermal
zone parameters structure"), thermal_zone_device_register() allocates
a copy of the tzp argument and frees it when unregistering, so
thermal_of_zone_register() now ends up leaking its original tzp and
double-freeing the tzp copy. Fix this by locating tzp on stack instead.

Fixes: 3d439b1a2a ("thermal/core: Alloc-copy-free the thermal zone parameters structure")
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: 6.4+ <stable@vger.kernel.org> # 6.4+: 8bcbb18c61d6: thermal: core: constify params in thermal_zone_device_register
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Ahmad Fatoum 2023-07-08 13:27:20 +02:00 • committed by Greg Kroah-Hartman

parent 5dac557301

commit adce490894

1 changed files with 6 additions and 21 deletions

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drivers/thermal/thermal_of.c

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