tree 1a57b05fc65da2d41424330c2044bc89d2194de5
parent 57f2ffe14fd125c240babd88b99d8a57d3ed060e
author Heiko Carstens <heiko.carstens@de.ibm.com> 1417174608 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1417428464 +0100

s390/kprobes: fix instruction copy for out of line execution

When we generate the instruction for out of line execution the length
of the to be copied instruction was evaluated from a not initialized
memory location.
Therefore we ended up with a random (2, 4 or 6) number of bytes being
copied instead of taking the real instruction length into account.
This works surprisingly well most of the time, but still not always.

Reported-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>