tlsf: fix internal overflow trying to allocate big buffers

The function adjust_request_size() has an unhandled failure mode:
If aligning a buffer up overflows SIZE_MAX, it will compute a way to
short buffer instead of propagating an error. Fix this by returning
0 in this case and checking for 0 whereever the function is called.

0 is a safe choice for an error code, because the function returns
at least block_size_min on success and 0 was already an error code
(that was just never handled).

Reported-by: Jonas Martin <j.martin@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220523062756.774153-2-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

0 files changed, 0 insertions, 0 deletions