tree 55848e2ca4856a64b348a57ecca495c2f065aa0f
parent f7e8b616ed1cc6f790b82324bce8a2a60295e5c2
author Steven Rostedt <srostedt@redhat.com> 1243975915 -0400
committer Steven Rostedt <rostedt@goodmis.org> 1243975915 -0400

function-graph: always initialize task ret_stack

On creating a new task while running the function graph tracer, if
we fail to allocate the ret_stack, and then fail the fork, the
code will free the parent ret_stack. This is because the child
duplicated the parent and currently points to the parent's ret_stack.

This patch always initializes the task's ret_stack to NULL.

[ Impact: prevent crash of parent on low memory during fork ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>