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Martin KaFai Lau 70b971118e bpf: Use hlist_add_head_rcu when linking to local_storage 
The local_storage->list will be traversed by rcu reader in parallel.
Thus, hlist_add_head_rcu() is needed in bpf_selem_link_storage_nolock().
This patch fixes it.

This part of the code has recently been refactored in bpf-next
and this patch makes changes to the new file "bpf_local_storage.c".
Instead of using the original offending commit in the Fixes tag,
the commit that created the file "bpf_local_storage.c" is used.

A separate fix has been provided to the bpf tree.

Fixes: 450af8d0f6 ("bpf: Split bpf_local_storage to bpf_sk_storage")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200916204453.2003915-1-kafai@fb.com
2020-09-19 01:12:35 +02:00
arch bpf, x64: rework pro/epilogue and tailcall handling in JIT 2020-09-17 19:55:30 -07:00
block block-5.9-2020-08-14 2020-08-15 20:36:42 -07:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-08-14 13:09:15 -07:00
Documentation Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-09-01 13:22:59 -07:00
drivers bpf: Mutex protect used_maps array and count 2020-09-15 18:28:27 -07:00
fs io_uring: ignore POLLIN for recvmsg on MSG_ERRQUEUE 2020-08-24 16:16:06 -07:00
include bpf: Add abnormal return checks. 2020-09-17 19:56:07 -07:00
init bpf: Introduce sleepable BPF programs 2020-08-28 21:20:33 +02:00
ipc ipc/shm.c: remove the superfluous break 2020-08-12 10:58:02 -07:00
kernel bpf: Use hlist_add_head_rcu when linking to local_storage 2020-09-19 01:12:35 +02:00
lib netlink: remove duplicated nla_need_padding_for_64bit() check 2020-08-25 06:06:19 -07:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
mm Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-09-01 13:22:59 -07:00
net bpf: Mutex protect used_maps array and count 2020-09-15 18:28:27 -07:00
samples samples/bpf: Fix test_map_in_map on s390 2020-09-19 01:02:55 +02:00
scripts Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-09-01 13:22:59 -07:00
security bpf: Implement bpf_local_storage for inodes 2020-08-25 15:00:04 -07:00
sound sound fixes for 5.9-rc2 2020-08-21 10:07:54 -07:00
tools selftests/bpf: Fix endianness issue in test_sockopt_sk 2020-09-19 01:01:18 +02:00
usr Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
virt * PAE and PKU bugfixes for x86 2020-08-22 10:03:05 -07:00
.clang-format block: add bio_for_each_bvec_all() 2020-05-25 11:25:24 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: Add ZSTD-compressed files 2020-07-31 11:50:49 +02:00
.mailmap Merge branch 'akpm' (patches from Andrew) 2020-08-21 14:44:48 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS CREDITS: Replace HTTP links with HTTPS ones 2020-07-23 14:53:58 -06:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS net: phy: add Lynx PCS module 2020-08-31 12:52:33 -07:00
Makefile kbuild: remove redundant patterns in filter/filter-out 2020-08-18 20:16:46 +09:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.