Peter Zijlstra c064a0de1b livepatch: fix RCU usage in klp_find_external_symbol() ...

While one must hold RCU-sched (aka. preempt_disable) for find_symbol()
one must equally hold it over the use of the object returned.

The moment you release the RCU-sched read lock, the object can be dead
and gone.

[[email protected]: change subject line to be aligned with other patches]
Cc: Seth Jennings <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: Miroslav Benes <[email protected]>
Cc: Petr Mladek <[email protected]>
Cc: Jiri Kosina <[email protected]>
Cc: "Paul E. McKenney" <[email protected]>
Cc: Rusty Russell <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Masami Hiramatsu <[email protected]>
Acked-by: Paul E. McKenney <[email protected]>
Acked-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

2015-03-03 00:22:55 +01:00

..

core.c

livepatch: fix RCU usage in klp_find_external_symbol()

2015-03-03 00:22:55 +01:00

Kconfig

livepatch: rename config to CONFIG_LIVEPATCH

2015-02-04 11:25:51 +01:00

Makefile

livepatch: rename config to CONFIG_LIVEPATCH

2015-02-04 11:25:51 +01:00