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Filename Latest commit message Latest commit date
Roman Kapl a60b3f515d net: sched: crash on blocks with goto chain action
tcf_block_put_ext has assumed that all filters (and thus their goto
actions) are destroyed in RCU callback and thus can not race with our
list iteration. However, that is not true during netns cleanup (see
tcf_exts_get_net comment).

Prevent the user after free by holding all chains (except 0, that one is
already held). foreach_safe is not enough in this case.

To reproduce, run the following in a netns and then delete the ns:
    ip link add dtest type dummy
    tc qdisc add dev dtest ingress
    tc filter add dev dtest chain 1 parent ffff: handle 1 prio 1 flower action goto chain 2

Fixes: 822e86d997 ("net_sched: remove tcf_block_put_deferred()")
Signed-off-by: Roman Kapl <code@rkapl.cz>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-11-25 23:57:20 +09:00
arch This pull request contains the following core changes: 2017-11-22 20:46:06 -10:00
block
certs
crypto Keys devel 2017-11-24 11:54:11 +11:00
Documentation fixes/cleanups for rc1, non-desktop flags for VR 2017-11-23 21:04:56 -10:00
drivers net: thunderbolt: Stop using zero to mean no valid DMA mapping 2017-11-25 23:56:02 +09:00
firmware
fs
include rxrpc: Fix service endpoint expiry 2017-11-24 10:18:42 +00:00
init
ipc
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2017-11-24 02:33:01 +09:00
lib This pull request contains the following core changes: 2017-11-22 20:46:06 -10:00
mm
net net: sched: crash on blocks with goto chain action 2017-11-25 23:57:20 +09:00
samples
scripts A few late-arriving docs updates that have no real reason to wait. There's 2017-11-23 21:01:32 -10:00
security Merge branch 'next-keys' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2017-11-23 20:51:27 -10:00
sound sound fixes for 4.15-rc1 2017-11-23 21:09:41 -10:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2017-11-24 02:33:01 +09:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS RTC for 4.15 2017-11-22 20:58:23 -10:00
Makefile
README

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

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

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.