linux/include
Jason A. Donenfeld c01d4d0a82 random: quiet urandom warning ratelimit suppression message
random.c ratelimits how much it warns about uninitialized urandom reads
using __ratelimit(). When the RNG is finally initialized, it prints the
number of missed messages due to ratelimiting.

It has been this way since that functionality was introduced back in
2018. Recently, cc1e127bfa ("random: remove ratelimiting for in-kernel
unseeded randomness") put a bit more stress on the urandom ratelimiting,
which teased out a bug in the implementation.

Specifically, when under pressure, __ratelimit() will print its own
message and reset the count back to 0, making the final message at the
end less useful. Secondly, it does so as a pr_warn(), which apparently
is undesirable for people's CI.

Fortunately, __ratelimit() has the RATELIMIT_MSG_ON_RELEASE flag exactly
for this purpose, so we set the flag.

Fixes: 4e00b339e2 ("random: rate limit unseeded randomness warnings")
Cc: stable@vger.kernel.org
Reported-by: Jon Hunter <jonathanh@nvidia.com>
Reported-by: Ron Economos <re@w6rz.net>
Tested-by: Ron Economos <re@w6rz.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2022-06-19 23:50:46 +02:00
..
acpi cxl for 5.19 2022-05-27 21:24:19 -07:00
asm-generic kernel: add platform_has() infrastructure 2022-06-06 08:06:00 +02:00
clocksource pwm: Changes for v5.19-rc1 2022-06-01 10:49:11 -07:00
crypto
drm drm/ttm: fix bulk move handling v2 2022-06-14 11:15:19 +02:00
dt-bindings Char / Misc / Other smaller driver subsystem updates for 5.19-rc1 2022-06-03 11:36:34 -07:00
keys
kunit
kvm
linux random: quiet urandom warning ratelimit suppression message 2022-06-19 23:50:46 +02:00
math-emu
media
memory
misc
net Revert "net: Add a second bind table hashed by port and address" 2022-06-16 11:07:59 -07:00
pcmcia
ras
rdma
scsi SCSI misc on 20220524 2022-05-25 19:09:48 -07:00
soc ARM: driver changes for 5.19 2022-05-26 10:32:47 -07:00
sound ARM: multiplatform changes, part 2 2022-06-02 15:23:54 -07:00
target SCSI misc on 20220524 2022-05-25 19:09:48 -07:00
trace workqueue: Fix type of cpu in trace event 2022-06-07 07:09:47 -10:00
uapi io_uring: remove IORING_CLOSE_FD_AND_FILE_SLOT 2022-06-14 10:57:40 -06:00
ufs
vdso
video video: fbdev: radeon: Fix spelling typo in comment 2022-05-26 13:38:59 +02:00
xen arm/xen: Assign xen-grant DMA ops for xen-grant DMA devices 2022-06-06 16:07:30 +02:00