Maxime Bizon b042e47491 pstore/ram: Fix undefined usage of rounddown_pow_of_two(0) ... record_size / console_size / ftrace_size can be 0 (this is how you disable the feature), but rounddown_pow_of_two(0) is undefined. As suggested by Kees Cook, use !is_power_of_2() as a condition to call rounddown_pow_of_two and avoid its undefined behavior on the value 0. This issue has been present since commit 1894a253 (ramoops: Move to fs/pstore/ram.c). Cc: stable@vger.kernel.org Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>		2012-11-17 17:40:57 -08:00
..
ftrace.c	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
inode.c	pstore: Add persistent function tracing	2012-07-17 10:05:52 -07:00
internal.h	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
Kconfig	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
Makefile	pstore: Add persistent function tracing	2012-07-17 10:05:52 -07:00
platform.c	pstore: Fix NULL pointer dereference in console writes	2012-11-14 18:30:21 -08:00
ram_core.c	pstore/ram: Make tracing log versioned	2012-07-17 16:48:09 -07:00
ram.c	pstore/ram: Fix undefined usage of rounddown_pow_of_two(0)	2012-11-17 17:40:57 -08:00