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Filename Latest commit message Latest commit date
Anssi Hannula 6f41e4a69b hv_balloon: rate-limit "Unhandled message" warning 
[ Upstream commit 1d7286729aa616772be334eb908e11f527e1e291 ]

For a couple of times I have encountered a situation where

  hv_balloon: Unhandled message: type: 12447

is being flooded over 1 million times per second with various values,
filling the log and consuming cycles, making debugging difficult.

Add rate limiting to the message.

Most other Hyper-V drivers already have similar rate limiting in their
message callbacks.

The cause of the floods in my case was probably fixed by 96d9d1fa5cd5
("Drivers: hv: balloon: account for vmbus packet header in
max_pkt_size").

Fixes: 9aa8b50b2b ("Drivers: hv: Add Hyper-V balloon driver")
Signed-off-by: Anssi Hannula <anssi.hannula@bitwise.fi>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220222141400.98160-1-anssi.hannula@bitwise.fi
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-15 14:18:15 +02:00
arch KVM: x86/emulator: Defer not-present segment check in __load_segment_descriptor() 2022-04-15 14:18:14 +02:00
block block: don't delete queue kobject before its children 2022-04-15 14:18:05 +02:00
certs
crypto crypto: authenc - Fix sleep in atomic context in decrypt_tail 2022-04-15 14:18:04 +02:00
Documentation Documentation: update stable tree link 2022-04-15 14:17:58 +02:00
drivers hv_balloon: rate-limit "Unhandled message" warning 2022-04-15 14:18:15 +02:00
fs ext2: correct max file size computing 2022-04-15 14:18:13 +02:00
include block: don't merge across cgroup boundaries if blkcg is enabled 2022-04-15 14:18:01 +02:00
init
ipc
kernel printk: fix return value of printk.devkmsg __setup handler 2022-04-15 14:18:08 +02:00
lib lib/raid6/test: fix multiple definition linking error 2022-04-15 14:18:02 +02:00
LICENSES
mm mm/kmemleak: reset tag when compare object pointer 2022-04-15 14:18:01 +02:00
net udp: call udp_encap_enable for v6 sockets when enabling encap 2022-04-15 14:18:01 +02:00
samples
scripts
security TOMOYO: fix __setup handlers return values 2022-04-15 14:18:13 +02:00
sound ASoC: msm8916-wcd-analog: Fix error handling in pm8916_wcd_analog_spmi_probe 2022-04-15 14:18:10 +02:00
tools libbpf: Skip forward declaration when counting duplicated type names 2022-04-15 14:18:14 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.188 2022-03-28 08:46:49 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.