Go to file
Davide Caratti bbc09e7842 net/sched: fix idr leak on the error path of tcf_bpf_init()
when the following command sequence is entered

 # tc action add action bpf bytecode '4,40 0 0 12,31 0 1 2048,6 0 0 262144,6 0 0 0' index 100
 RTNETLINK answers: Invalid argument
 We have an error talking to the kernel
 # tc action add action bpf bytecode '4,40 0 0 12,21 0 1 2048,6 0 0 262144,6 0 0 0' index 100
 RTNETLINK answers: No space left on device
 We have an error talking to the kernel

act_bpf correctly refuses to install the first TC rule, because 31 is not
a valid instruction. However, it refuses to install the second TC rule,
even if the BPF code is correct. Furthermore, it's no more possible to
install any other rule having the same value of 'index' until act_bpf
module is unloaded/inserted again. After the idr has been reserved, call
tcf_idr_release() instead of tcf_idr_cleanup(), to fix this issue.

Fixes: 65a206c01e ("net/sched: Change act_api and act_xxx modules to use IDR")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-21 18:11:46 -04:00
arch Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2018-03-07 20:27:51 -05:00
block for-linus-20180302 2018-03-02 09:35:36 -08:00
certs certs/blacklist_nohashes.c: fix const confusion in certs blacklist 2018-02-21 15:35:43 -08:00
crypto X.509: fix NULL dereference when restricting key with unsupported_sig 2018-02-22 14:38:34 +00:00
Documentation net: dsa: mv88e6xxx: Fix binding documentation for MDIO busses 2018-03-16 15:01:34 -04:00
drivers qede: fix spelling mistake: "registeration" -> "registration" 2018-03-21 18:09:46 -04:00
firmware
fs sysfs: symlink: export sysfs_create_link_nowarn() 2018-03-19 21:14:26 -04:00
include vlan: Fix out of order vlan headers with reorder header off 2018-03-16 10:03:47 -04:00
init jump_label: Explicitly disable jump labels in __init code 2018-02-21 16:54:05 +01:00
ipc vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
kernel bpf: skip unnecessary capability check 2018-03-20 23:50:39 +01:00
lib test_bpf: Fix testing with CONFIG_BPF_JIT_ALWAYS_ON=y on other arches 2018-03-20 23:04:30 +01:00
LICENSES
mm mm: don't defer struct page initialization for Xen pv guests 2018-02-21 15:35:43 -08:00
net net/sched: fix idr leak on the error path of tcf_bpf_init() 2018-03-21 18:11:46 -04:00
samples - do not build samples when cross compiling (Michal Hocko) 2018-02-27 10:39:29 -08:00
scripts Kbuild fixes for v4.16 2018-03-03 10:37:01 -08:00
security integrity/security: fix digsig.c build error with header file 2018-02-22 20:09:08 -08:00
sound ALSA: x86: Fix potential crash at error path 2018-02-28 08:46:00 +01:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2018-03-07 20:27:51 -05:00
usr
virt KVM: mmu: Fix overlap between public and private memslots 2018-02-24 01:43:36 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore .gitignore: ignore ASN.1 auto generated files 2018-02-14 21:05:38 +01:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Kbuild fixes for v4.16 2018-03-03 10:37:01 -08:00
Makefile kbuild: disable clang's default use of -fmerge-all-constants 2018-03-20 17:43:15 -07:00
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.