43768f7ce0
- Plug a load average accounting race which was introduced with a recent
optimization casing load average to show bogus numbers.
- Fix the rseq CPU id initialization for new tasks. sched_fork() does not
update the rseq CPU id so the id is the stale id of the parent task,
which can cause user space data corruption.
- Handle a 0 return value of task_h_load() correctly in the load balancer,
which does not decrease imbalance and therefore pulls until the maximum
number of loops is reached, which might be all tasks just created by a
fork bomb.
-----BEGIN PGP SIGNATURE-----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=bCPw
-----END PGP SIGNATURE-----
Merge tag 'sched-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master
Pull scheduler fixes from Thomas Gleixner:
"A set of scheduler fixes:
- Plug a load average accounting race which was introduced with a
recent optimization casing load average to show bogus numbers.
- Fix the rseq CPU id initialization for new tasks. sched_fork() does
not update the rseq CPU id so the id is the stale id of the parent
task, which can cause user space data corruption.
- Handle a 0 return value of task_h_load() correctly in the load
balancer, which does not decrease imbalance and therefore pulls
until the maximum number of loops is reached, which might be all
tasks just created by a fork bomb"
* tag 'sched-urgent-2020-07-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: handle case of task_h_load() returning 0
sched: Fix unreliable rseq cpu_id for new tasks
sched: Fix loadavg accounting race
|
||
|---|---|---|
| .. | ||
| acpi | ||
| asm-generic | ||
| clocksource | ||
| crypto | ||
| drm | ||
| dt-bindings | ||
| keys | ||
| kunit | ||
| kvm | ||
| linux | ||
| math-emu | ||
| media | ||
| misc | ||
| net | ||
| pcmcia | ||
| ras | ||
| rdma | ||
| scsi | ||
| soc | ||
| sound | ||
| target | ||
| trace | ||
| uapi | ||
| vdso | ||
| video | ||
| xen | ||