Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'sched-urgent-2025-07-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single fix for the scheduler.
A recent commit changed the runqueue counter nr_uninterruptible to an
unsigned int. Due to the fact that the counters are not updated on
migration of a uninterruptble task to a different CPU, these counters
can exceed INT_MAX.
The counter is cast to long in the load average calculation, which
means that the cast expands into negative space resulting in bogus
load average values.
Convert it back to unsigned long to fix this.
* tag 'sched-urgent-2025-07-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Change nr_uninterruptible type to unsigned long
+2
-2
+1
-1
kernel/sched/loadavg.c
+1
-1
kernel/sched/loadavg.c
···
80
80
long nr_active, delta = 0;
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81
82
82
nr_active = this_rq->nr_running - adjust;
83
-
nr_active += (int)this_rq->nr_uninterruptible;
83
+
nr_active += (long)this_rq->nr_uninterruptible;
84
84
85
85
if (nr_active != this_rq->calc_load_active) {
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delta = nr_active - this_rq->calc_load_active;
+1
-1
kernel/sched/sched.h
+1
-1
kernel/sched/sched.h
···
1149
1149
* one CPU and if it got migrated afterwards it may decrease
1150
1150
* it on another CPU. Always updated under the runqueue lock:
1151
1151
*/
1152
-
unsigned int nr_uninterruptible;
1152
+
unsigned long nr_uninterruptible;
1153
1153
1154
1154
union {
1155
1155
struct task_struct __rcu *donor; /* Scheduler context */