4.19-stable patches

added patches:
	random-quiet-urandom-warning-ratelimit-suppression-message.patch

diff --git a/queue-4.19/random-quiet-urandom-warning-ratelimit-suppression-message.patch b/queue-4.19/random-quiet-urandom-warning-ratelimit-suppression-message.patch
new file mode 100644 (file)
index 0000000..102bdfe
--- /dev/null
+++ b/queue-4.19/random-quiet-urandom-warning-ratelimit-suppression-message.patch
@@ -0,0 +1,72 @@
+From c01d4d0a82b71857be7449380338bc53dde2da92 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Thu, 16 Jun 2022 15:00:51 +0200
+Subject: random: quiet urandom warning ratelimit suppression message
+
+From: Jason A. Donenfeld <Jason@zx2c4.com>
+
+commit c01d4d0a82b71857be7449380338bc53dde2da92 upstream.
+
+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, cc1e127bfa95 ("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: 4e00b339e264 ("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>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/char/random.c     |    2 +-
+ include/linux/ratelimit.h |   12 ++++++++----
+ 2 files changed, 9 insertions(+), 5 deletions(-)
+
+--- a/drivers/char/random.c
++++ b/drivers/char/random.c
+@@ -88,7 +88,7 @@ static RAW_NOTIFIER_HEAD(random_ready_ch
+ 
+ /* Control how we warn userspace. */
+ static struct ratelimit_state urandom_warning =
+-      RATELIMIT_STATE_INIT("warn_urandom_randomness", HZ, 3);
++      RATELIMIT_STATE_INIT_FLAGS("urandom_warning", HZ, 3, RATELIMIT_MSG_ON_RELEASE);
+ static int ratelimit_disable __read_mostly =
+       IS_ENABLED(CONFIG_WARN_ALL_UNSEEDED_RANDOM);
+ module_param_named(ratelimit_disable, ratelimit_disable, int, 0644);
+--- a/include/linux/ratelimit.h
++++ b/include/linux/ratelimit.h
+@@ -23,12 +23,16 @@ struct ratelimit_state {
+       unsigned long   flags;
+ };
+ 
+-#define RATELIMIT_STATE_INIT(name, interval_init, burst_init) {               \
+-              .lock           = __RAW_SPIN_LOCK_UNLOCKED(name.lock),  \
+-              .interval       = interval_init,                        \
+-              .burst          = burst_init,                           \
++#define RATELIMIT_STATE_INIT_FLAGS(name, interval_init, burst_init, flags_init) { \
++              .lock           = __RAW_SPIN_LOCK_UNLOCKED(name.lock),            \
++              .interval       = interval_init,                                  \
++              .burst          = burst_init,                                     \
++              .flags          = flags_init,                                     \
+       }
+ 
++#define RATELIMIT_STATE_INIT(name, interval_init, burst_init) \
++      RATELIMIT_STATE_INIT_FLAGS(name, interval_init, burst_init, 0)
++
+ #define RATELIMIT_STATE_INIT_DISABLED                                 \
+       RATELIMIT_STATE_INIT(ratelimit_state, 0, DEFAULT_RATELIMIT_BURST)
+ 

diff --git a/queue-4.19/series b/queue-4.19/series
index 6448dc78a2f77adfc310a3a531f504b8a1ff23c5..b96068a702374113b08227273640930d6bbe327f 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -5,3 +5,4 @@ alsa-hda-conexant-fix-missing-beep-setup.patch
 alsa-hda-realtek-add-quirk-for-clevo-pd70pnt.patch
 ata-libata-add-qc-flags-in-ata_qc_complete_template-tracepoint.patch
 dm-era-commit-metadata-in-postsuspend-after-worker-stops.patch
+random-quiet-urandom-warning-ratelimit-suppression-message.patch