diff options
| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-04-13 09:34:53 -0400 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-06-09 13:29:10 +0100 |
| commit | 5325b7039e20ba57c873e9cfe00deb1f299445df (patch) | |
| tree | 5bd9c8a87225cbd2bf9c25a39cd1b09a9f48948c /virt/kvm/irq_comm.c | |
| parent | a46ea9a3af2d816884b3a04f1f570f45f4455a0f (diff) | |
sched: Use CPUPRI_NR_PRIORITIES instead of MAX_RT_PRIO in cpupri check
commit 6227cb00cc120f9a43ce8313bb0475ddabcb7d01 upstream.
The check at the beginning of cpupri_find() makes sure that the task_pri
variable does not exceed the cp->pri_to_cpu array length. But that length
is CPUPRI_NR_PRIORITIES not MAX_RT_PRIO, where it will miss the last two
priorities in that array.
As task_pri is computed from convert_prio() which should never be bigger
than CPUPRI_NR_PRIORITIES, if the check should cause a panic if it is
hit.
Reported-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1397015410.5212.13.camel@marge.simpson.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'virt/kvm/irq_comm.c')
0 files changed, 0 insertions, 0 deletions