linux/drivers/char
Linus Torvalds 0313bc278d Revert "random: block in /dev/urandom"
This reverts commit 6f98a4bfee.

It turns out we still can't do this.  Way too many platforms that don't
have any real source of randomness at boot and no jitter entropy because
they don't even have a cycle counter.

As reported by Guenter Roeck:

 "This causes a large number of qemu boot test failures for various
  architectures (arm, m68k, microblaze, sparc32, xtensa are the ones I
  observed).

  Common denominator is that boot hangs at 'Saving random seed:'"

This isn't hugely unexpected - we tried it, it failed, so now we'll
revert it.

Link: https://lore.kernel.org/all/20220322155820.GA1745955@roeck-us.net/
Reported-and-bisected-by: Guenter Roeck <linux@roeck-us.net>
Cc: Jason Donenfeld <Jason@zx2c4.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-03-22 09:17:20 -07:00
..
agp pci-v5.17-changes 2022-01-16 08:08:11 +02:00
hw_random Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2022-03-21 16:02:36 -07:00
ipmi ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module 2021-12-21 08:04:42 -06:00
mwave char/mwave: Adjust io port register size 2021-12-03 14:27:06 +01:00
pcmcia cm4000_cs: Use struct_group() to zero struct cm4000_dev region 2021-09-25 08:20:49 -07:00
tpm bounds-fixes updates for v5.18-rc1 2022-03-21 19:58:27 -07:00
xilinx_hwicap
xillybus char: xillybus: fix msg_ep UAF in xillyusb_probe() 2021-10-19 09:40:18 +02:00
adi.c
apm-emulation.c
applicom.c applicom: unneed to initialise statics to 0 2021-12-21 10:14:08 +01:00
applicom.h
bsr.c
ds1620.c
dsp56k.c
dtlk.c
hangcheck-timer.c
hpet.c hpet: simplify subdirectory registration with register_sysctl() 2022-01-22 08:33:34 +02:00
Kconfig char: move RANDOM_TRUST_CPU & RANDOM_TRUST_BOOTLOADER into the Character devices menu 2021-08-16 19:02:19 +02:00
lp.c char: lp: remove redundant space around (inside) parenthesized expressions 2021-03-24 08:26:32 +01:00
Makefile remove the raw driver 2021-06-04 15:35:03 +02:00
mem.c Revert "random: block in /dev/urandom" 2022-03-22 09:17:20 -07:00
misc.c char: misc: increase DYNAMIC_MINORS value 2020-11-03 09:52:04 +01:00
mspec.c
nsc_gpio.c
nvram.c
nwbutton.c
nwbutton.h
nwflash.c
pc8736x_gpio.c
powernv-op-panel.c powerpc/powernv: Fix fall-through warning for Clang 2021-07-13 19:21:41 -05:00
ppdev.c
ps3flash.c powerpc/ps3: make system bus's remove and shutdown callbacks return void 2020-12-04 01:01:22 +11:00
random.c Revert "random: block in /dev/urandom" 2022-03-22 09:17:20 -07:00
scx200_gpio.c
sonypi.c
tb0219.c
tlclk.c
toshiba.c module: remove never implemented MODULE_SUPPORTED_DEVICE 2021-03-17 13:16:18 -07:00
ttyprintk.c tty: drop put_tty_driver 2021-07-27 12:17:21 +02:00
uv_mmtimer.c
virtio_console.c virtio_console: break out of buf poll on remove 2022-03-04 08:33:22 -05:00