diff options
| author |   Vladimir Oltean <olteanv@gmail.com> | 2019-09-29 02:01:39 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-09-30 18:32:20 -0700 |
| commit | 68ce6688a5baefde30914fc07fc27292dbbe8320 (patch) | |
| tree | effbc924ac1ced53a241d80025857565ffa18777 /virt | |
| parent | net: dsa: sja1105: Prevent leaking memory (diff) | |
| download | linux-dev-68ce6688a5baefde30914fc07fc27292dbbe8320.tar.xz linux-dev-68ce6688a5baefde30914fc07fc27292dbbe8320.zip | |
net: sched: taprio: Fix potential integer overflow in taprio_set_picos_per_byte
The speed divisor is used in a context expecting an s64, but it is
evaluated using 32-bit arithmetic.
To avoid that happening, instead of multiplying by 1,000,000 in the
first place, simplify the fraction and do a standard 32 bit division
instead.
Fixes: f04b514c0ce2 ("taprio: Set default link speed to 10 Mbps in taprio_set_picos_per_byte")
Reported-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions