uretprobes: Return probe exit, invoke handlers

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Uretprobe handlers are invoked when the trampoline is hit, on completion
the trampoline is replaced with the saved return address and the uretprobe
instance deleted.

TODO: handle_trampoline() assumes that ->return_instances is always valid.
We should teach it to handle longjmp() which can invalidate the pending
return_instance's. This is nontrivial, we will try to do this in a separate
series.

Signed-off-by: Anton Arapov <anton@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>

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Anton Arapov 2013-04-03 18:00:36 +02:00 • committed by Oleg Nesterov

parent 0dfd0eb8e4

commit fec8898d86

1 changed files with 64 additions and 1 deletions

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kernel/events/uprobes.c

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