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thermal/core: Potential buffer overflow in thermal_build_list_of_poli…
…cies() [ Upstream commit 1bb30b2 ] After printing the list of thermal governors, then this function prints a newline character. The problem is that "size" has not been updated after printing the last governor. This means that it can write one character (the NUL terminator) beyond the end of the buffer. Get rid of the "size" variable and just use "PAGE_SIZE - count" directly. Fixes: 1b4f484 ("thermal: core: group functions related to governor handling") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210916131342.GB25094@kili Signed-off-by: Sasha Levin <sashal@kernel.org>
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