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| author | Colin Ian King <colin.king@canonical.com> | 2021-03-30 12:12:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-02 16:28:03 +0200 |
| commit | 55022fdeace8e432f008787ce03703bdcc9c3ca9 (patch) | |
| tree | 8b2df42f0964fcaf2d6c6bf80a32ce3c2020fff3 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | a28e824fb8270eda43fd0f65c2a5fdf33f55c5eb (diff) | |
nvmem: core: Fix unintentional sign extension issue
The shifting of the u8 integer buf[3] by 24 bits to the left will
be promoted to a 32 bit signed int and then sign-extended to a
u64. In the event that the top bit of buf[3] is set then all
then all the upper 32 bits of the u64 end up as also being set
because of the sign-extension. Fix this by casting buf[i] to
a u64 before the shift.
Fixes: a28e824fb827 ("nvmem: core: Add functions to make number reading easy")
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Addresses-Coverity: ("Unintended sign extension")
Link: https://lore.kernel.org/r/20210330111241.19401-8-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions