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Florian Westphal fffad5988f netfilter: nf_nat_masquerade: defer conntrack walk to work queue 
[ Upstream commit 7970a19b71 ]

The ipv4 and device notifiers are called with RTNL mutex held.
The table walk can take some time, better not block other RTNL users.

'ip a' has been reported to block for up to 20 seconds when conntrack table
has many entries and device down events are frequent (e.g., PPP).

Reported-and-tested-by: Martin Zaharinov <micron10@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-10-17 10:42:34 +02:00
arch x86/Kconfig: Correct reference to MWINCHIP3D 2021-10-13 10:08:21 +02:00
block
certs
crypto
Documentation
drivers HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs 2021-10-17 10:42:33 +02:00
fs ext4: correct the error path of ext4_write_inline_data_end() 2021-10-17 10:42:33 +02:00
include
init
ipc
kernel bpf: Fix integer overflow in prealloc_elems_and_freelist() 2021-10-13 10:08:18 +02:00
lib
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net netfilter: nf_nat_masquerade: defer conntrack walk to work queue 2021-10-17 10:42:34 +02:00
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Makefile Linux 5.4.153 2021-10-13 10:08:21 +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.