linux-stable/arch/um
Jason A. Donenfeld 36b6fc9afe um: use fallback for random_get_entropy() instead of zero
commit 9f13fb0cd1 upstream.

In the event that random_get_entropy() can't access a cycle counter or
similar, falling back to returning 0 is really not the best we can do.
Instead, at least calling random_get_entropy_fallback() would be
preferable, because that always needs to return _something_, even
falling back to jiffies eventually. It's not as though
random_get_entropy_fallback() is super high precision or guaranteed to
be entropic, but basically anything that's not zero all the time is
better than returning zero all the time.

This is accomplished by just including the asm-generic code like on
other architectures, which means we can get rid of the empty stub
function here.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Richard Weinberger <richard@nod.at>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-30 09:27:14 +02:00
..
configs
drivers um: Fix uml_mconsole stop/go 2022-04-08 13:59:03 +02:00
include um: use fallback for random_get_entropy() instead of zero 2022-05-30 09:27:14 +02:00
kernel Merge branch 'akpm' (patches from Andrew) 2022-01-15 20:37:06 +02:00
os-Linux um: Use swap() to make code cleaner 2021-12-21 21:41:04 +01:00
scripts
.gitignore um: gitignore: Add kernel/capflags.c 2021-12-21 21:22:43 +01:00
Kbuild
Kconfig Peter Zijlstra says: 2022-01-11 17:24:45 -08:00
Kconfig.debug
Makefile
Makefile-os-Linux
Makefile-skas