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| author | Peter Zijlstra <[email protected]> | 2015-02-28 21:24:48 +0000 |
|---|---|---|
| committer | Jiri Kosina <[email protected]> | 2015-03-02 23:22:55 +0000 |
| commit | c064a0de1bfb07c34a3798822c7e1636eea866e8 (patch) | |
| tree | d91896f9a004e5e36809262a85791d6aec85a89e /net/switchdev/switchdev.c | |
| parent | livepatch: RCU protect struct klp_func all the time when used in klp_ftrace_h... (diff) | |
| download | kernel-c064a0de1bfb07c34a3798822c7e1636eea866e8.tar.gz kernel-c064a0de1bfb07c34a3798822c7e1636eea866e8.zip | |
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]>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions