commit af945cf4bfc6586f0739b8c7f67af75576dec25e
author Li Zhong <zhong@linux.vnet.ibm.com> Mon May 06 22:44:41 2013 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> Tue May 14 14:36:35 2013 +1000
tree 1b9221a0cd507aef6f62e4874fc33947e549923e
parent b80ec3dc8e100f6c8b27c02cbb6079d401c3a054

powerpc: Fix MAX_STACK_TRACE_ENTRIES too low warning again

Saw this warning again, and this time from the ret_from_fork path.

It seems we could clear the back chain earlier in copy_thread(), which
could cover both path, and also fix potential lockdep usage in
schedule_tail(), or exception occurred before we clear the back chain.

Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>