Guenter Roeck 65d1e3ddea nios2: time: Read timer in get_cycles only if initialized ... Mainline crashes as follows when running nios2 images. On node 0 totalpages: 65536 free_area_init_node: node 0, pgdat c8408fa0, node_mem_map c8726000 Normal zone: 512 pages used for memmap Normal zone: 0 pages reserved Normal zone: 65536 pages, LIFO batch:15 Unable to handle kernel NULL pointer dereference at virtual address 00000000 ea = c8003cb0, ra = c81cbf40, cause = 15 Kernel panic - not syncing: Oops Problem is seen because get_cycles() is called before the timer it depends on is initialized. Returning 0 in that situation fixes the problem. Fixes: 33d72f3822 ("init/main.c: extract early boot entropy from the ..") Cc: Laura Abbott <labbott@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Daniel Micay <danielmicay@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>		2017-09-15 20:30:58 +08:00
..
boot	nios2: add earlycon support to 3c120 devboard DTS	2017-09-15 20:30:52 +08:00
configs	treewide: Remove remaining executable attributes from source files	2017-02-25 12:12:50 -08:00
include	nios2: move generic-y of exported headers to uapi/asm/Kbuild	2017-07-11 21:33:43 +09:00
kernel	nios2: time: Read timer in get_cycles only if initialized	2017-09-15 20:30:58 +08:00
lib	nios2: memset: use the right constraint modifier for the %4 output operand	2016-04-27 16:35:55 +08:00
mm	nios2: use generic strncpy_from_user() and strnlen_user()	2017-05-08 17:14:14 +08:00
platform	nios2: Add CDX support	2017-05-08 16:59:19 +08:00
Kconfig	clocksource/drivers: Rename CLKSRC_OF to TIMER_OF	2017-06-14 12:01:03 +02:00
Kconfig.debug	nios2: enable earlycon support	2017-05-08 16:59:19 +08:00
Makefile	nios2: Add CDX support	2017-05-08 16:59:19 +08:00