Ben Hutchings d643719cc5 genirq: Fix race in register_irq_proc() ...

commit 95c2b17534 upstream.

Per-IRQ directories in procfs are created only when a handler is first
added to the irqdesc, not when the irqdesc is created.  In the case of
a shared IRQ, multiple tasks can race to create a directory.  This
race condition seems to have been present forever, but is easier to
hit with async probing.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Link: http://lkml.kernel.org/r/1443266636.2004.2.camel@decadent.org.uk
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-10-22 14:49:33 -07:00

..

autoprobe.c

genirq: Handle pending irqs in irq_startup()

2012-02-15 11:56:59 +01:00

chip.c

genirq: Introduce irq_chip_set_type_parent() helper

2015-08-20 00:25:25 +02:00

debug.h

irq: hide debug macros so they don't collide with others.

2012-04-23 12:30:03 -04:00

devres.c

genirq: devres: Fix testing return value of request_any_context_irq()

2015-05-13 10:47:37 +02:00

dummychip.c

Merge branch 'linus' into irq/core

2015-06-05 22:25:01 +02:00

generic-chip.c

genirq: generic chip: Support hierarchy domain

2015-05-18 17:32:44 +02:00

handle.c

genirq: Export symbol no_action()

2014-03-22 11:33:09 +01:00

internals.h

hotplug: Prevent alloc/free of irq descriptors during cpu up/down

2015-07-08 11:32:25 +02:00

irqdesc.c

Merge branch 'irq/for-x86' into irq/core

2015-06-20 19:14:31 +02:00

irqdomain.c

Merge branch 'irq/for-x86' into irq/core

2015-06-20 19:14:31 +02:00

Kconfig

genirq: Add generic msi irq domain support

2014-11-23 13:01:47 +01:00

Makefile

genirq: Add generic msi irq domain support

2014-11-23 13:01:47 +01:00

manage.c

genirq: Introduce helper function irq_data_get_node()

2015-06-12 16:54:21 +02:00

migration.c

genirq: Remove bogus restriction in irq_move_mask_irq()

2015-06-20 19:05:14 +02:00

msi.c

genirq: MSI: Constify irq_domain_ops

2015-05-05 10:45:58 +02:00

pm.c

genirq: Don't suspend nested_thread irqs over system suspend

2015-05-18 17:23:47 +02:00

proc.c

genirq: Fix race in register_irq_proc()

2015-10-22 14:49:33 -07:00

resend.c

genirq: Prevent resend to interrupts marked IRQ_NESTED_THREAD

2015-07-17 11:29:34 +02:00

settings.h

genirq: Prevent spurious detection for unconditionally polled interrupts

2013-11-13 16:03:02 +01:00

spurious.c

genirq: Sanitize spurious interrupt detection of threaded irqs

2014-05-03 23:15:39 +02:00