1ee55a8f7f
I recently came upon a scenario where I would get a double fault machine check exception tiriggered by a kernel module. However the ensuing crash stacktrace (ksym lookup) was not working correctly. Turns out that machine check auto-disables MMU while modules are allocated in kernel vaddr spapce. This patch re-enables the MMU before start printing the stacktrace making stacktracing of modules work upon a fatal exception. Cc: stable@kernel.org Signed-off-by: Jose Abreu <joabreu@synopsys.com> Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> [vgupta: moved code into low level handler to avoid in 2 places] |
||
---|---|---|
.. | ||
boot | ||
configs | ||
include | ||
kernel | ||
lib | ||
mm | ||
oprofile | ||
plat-axs10x | ||
plat-eznps | ||
plat-hsdk | ||
plat-sim | ||
plat-tb10x | ||
Kbuild | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |