diff options
| author | Anatol Pomozov <[email protected]> | 2013-09-22 12:43:47 -0600 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2013-09-22 12:43:47 -0600 |
| commit | f3cff25f05f2ac29b2ee355e611b0657482f6f1d (patch) | |
| tree | 8a06c59f0970a8bd4be2939792fc88ffddc39e62 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 75afb352991ff1cd3cf5955bfe611de6d83a0c87 (diff) | |
cfq: explicitly use 64bit divide operation for 64bit arguments
'samples' is 64bit operant, but do_div() second parameter is 32.
do_div silently truncates high 32 bits and calculated result
is invalid.
In case if low 32bit of 'samples' are zeros then do_div() produces
kernel crash.
Signed-off-by: Anatol Pomozov <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions