<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> <html> <tt></tt> <tt>FYI...</tt><tt></tt> <tt>I will be updating the x86_64 backtrace code to search all of the</tt> <tt>exception stacks for the origin of the active tasks' backtrace</tt> <tt>when the info is not available in the dumpfile header.</tt><tt></tt> <tt>Currently it first searches in the task's process stack, then the</tt> <tt>per-cpu IRQ stack, and lastly the per-cpu NMI stack. This patch</tt> <tt>looks at all 3 exception stacks in 2.4 kernels (NMI, STACKFAULT</tt> <tt>and DOUBLEFAULT), and all 5 exception stacks in 2.6 kernels</tt> <tt>(NMI, STACKFAULT, DOUBLEFAULT, DEBUG and MCE).</tt><tt></tt> <tt>The patch also removes an erroneous warning message re: the</tt> <tt>task cpu not being the same as the IRQ or exception stack cpu</tt> <tt>that gets displayed when doing a non-context-sensitive "bt -E",</tt> <tt>again only on an x86_64.</tt><tt></tt> <tt>Dave</tt> <tt></tt> </html>