tracing, x86: fix fixup section to return to original code

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Impact: fix to prevent a kernel crash on fault

If for some reason the pointer to the parent function on the
stack takes a fault, the fix up code will not return back to
the original faulting code. This can lead to unpredictable
results and perhaps even a kernel panic.

A fault should not happen, but if it does, we should simply
disable the tracer, warn, and continue running the kernel.
It should not lead to a kernel crash.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>

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This commit is contained in:

Steven Rostedt 2009-02-10 13:07:13 -05:00

parent acd895795d

commit e3944bfac9

1 changed files with 5 additions and 3 deletions

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arch/x86/kernel/ftrace.c

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