From: Chris Metcalf Date: Tue, 6 Aug 2013 20:10:23 +0000 (-0400) Subject: tile: avoid recursive backtrace faults X-Git-Tag: v3.12-rc1~120^2~52 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ef23111546df9e9dab2e2befb412a9563db0628;p=pandora-kernel.git tile: avoid recursive backtrace faults This change adds support for avoiding recursive backtracer crashes; we haven't seen this in practice other than when things are seriously corrupt, but it may help avoid losing the root cause of a crash. Also, don't abort kernel backtracers for invalid userspace PC's. If we do, we lose the ability to backtrace through a userspace call to a bad address above PAGE_OFFSET, even though that it can be perfectly reasonable to continue the backtrace in such a case. Signed-off-by: Chris Metcalf --- Reading git-diff-tree failed