linux-legacy-genesi-2

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Files

Thomas Gleixner 5c87f0c04a clockevents: Prevent clockevent_devices list corruption on cpu hotplug

commit bb6eddf7676e1c1f3e637aa93c5224488d99036f upstream.

Xiaotian Feng triggered a list corruption in the clock events list on
CPU hotplug and debugged the root cause.

If a CPU registers more than one per cpu clock event device, then only
the active clock event device is removed on CPU_DEAD. The unused
devices are kept in the clock events device list.

On CPU up the clock event devices are registered again, which means
that we list_add an already enqueued list_head. That results in list
corruption.

Resolve this by removing all devices which are associated to the dead
CPU on CPU_DEAD.

Reported-by: Xiaotian Feng <dfeng@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Xiaotian Feng <dfeng@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-01-06 14:26:22 -08:00

clockevents.c

clockevents: Prevent clockevent_devices list corruption on cpu hotplug

2010-01-06 14:26:22 -08:00

clocksource.c

clocksource: Prevent NULL pointer dereference

2009-07-19 17:15:54 +02:00

jiffies.c

clocksource: pass clocksource to read() callback

2009-04-21 13:41:47 -07:00

Kconfig

Kconfig: eliminate "def_bool n" constructs