redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

A single bugfix to prevent reference leaks in irq affinity notifiers.

Browse source 
-----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAl6AxL0THHRnbHhAbGlu
 dXRyb25peC5kZQAKCRCmGPVMDXSYoeYsD/9HDNL8ckEGtPN8LRMSH7BLOAQcKaDk
 c1zoQoa5lW94xT/aqr++IAoaWEr+dJFGWwha7A2q37iiUgzyCAAP5JXseOi5n8Mw
 xzrj/jVwY7sNxNwNtdbJqjTdrijmfmxku9eddhll3EncNP96gPbeGhv+VLZuJsIB
 EkllnDTop6jnCJU6Qxgjp9P5YBQycx7O7r5pCKrsUB9iu68tfRtLZEStzYD3RRam
 mJffSZUrdGwge6GPqSRuS3sRx584O+q8II5pP2VIG6mCz4EO5NHslSph82xwGT00
 nP9aIK9urfwzXGEhwHME1VxnRJ3Ln3AkplbMnv6bs01j9ckupvW9Zut2hSe0AZ3d
 LstlERXdRhLUIlsia4vFvkoIYYo0SNlZ3ZMLZIJ8fcnzrKtHbEJGD5dXaTSLgIaB
 E2N1/FJq9C7Ur0KYas+jQsrhQpJqhJrLg72Kj06DeB1rD9xj6lSJqxWXSvS0J0ow
 sk2Xr7a096rOqjnOPstgSnqVNMR+133L9uIIdXIzyBRaExjcllTznFjLUX3ZTVJu
 9Fk+D2ZTh8aMqWNlCZmarz+6Qs2ok3KB/mMgae8qLULKQfEop2QPVi1trjrA8g/C
 Zn+txKlVGgKm0DcOfq8tN4jHr8G2PKyX+GxcF3ElThnFBgkusz+9MBeS8CqVFJvT
 Xnt483DaCYaEHg==
 =s1UQ
 -----END PGP SIGNATURE-----

Merge tag 'irq-urgent-2020-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fix from Thomas Gleixner:
 "A single bugfix to prevent reference leaks in irq affinity notifiers"

* tag 'irq-urgent-2020-03-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Fix reference leaks on irq affinity notifiers
This commit is contained in:
Linus Torvalds 2020-03-29 10:07:00 -07:00
parent e595dd9451 df81dfcfd6
commit 01af08bd24
1 changed files with 9 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
kernel/irq/manage.c
View file

@ -323,7 +323,11 @@ int irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask,
if (desc->affinity_notify) {
kref_get(&desc->affinity_notify->kref);
schedule_work(&desc->affinity_notify->work);
if (!schedule_work(&desc->affinity_notify->work)) {
/* Work was already scheduled, drop our extra ref */
kref_put(&desc->affinity_notify->kref,
desc->affinity_notify->release);
}
}
irqd_set(data, IRQD_AFFINITY_SET);
@ -423,7 +427,10 @@ irq_set_affinity_notifier(unsigned int irq, struct irq_affinity_notify *notify)
raw_spin_unlock_irqrestore(&desc->lock, flags);
if (old_notify) {
cancel_work_sync(&old_notify->work);
if (cancel_work_sync(&old_notify->work)) {
/* Pending work had a ref, put that one too */
kref_put(&old_notify->kref, old_notify->release);
}
kref_put(&old_notify->kref, old_notify->release);
}