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commit b68089fecd73c84ab695d3de51546ae7a90da65f
Author: Oren Laadan <orenl@xxxxxxxxxxxxxxx>
Date: Sat Jul 11 15:41:32 2009 -0400
c/r: correctly restore retval for userspace tasks
restore_retval() already fixes the return value when restarting tasks
that were doing a syscall at the time of the checkpoint.
The return value of restarting tasks that were frozen from userspace
must also be loaded from the proper register (eax on x86) or else the
latter will be overwritten.
This fixes the consistent crashes seen on certain checkpoints that
happen to be taken when the target process was in userspace, and its
eax was not zero.
Signed-off-by: Oren Laadan <orenl@xxxxxxxxxxxxxxx>
-----------------------------------------------------------------------
Summary of changes:
checkpoint/restart.c | 58 +++++++++++++++++++++++++++++++------------------
1 files changed, 37 insertions(+), 21 deletions(-)
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