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Guillaume Nault 721c8dafad tcp: Protect accesses to .ts_recent_stamp with {READ,WRITE}_ONCE() 
Syncookies borrow the ->rx_opt.ts_recent_stamp field to store the
timestamp of the last synflood. Protect them with READ_ONCE() and
WRITE_ONCE() since reads and writes aren't serialised.

Use of .rx_opt.ts_recent_stamp for storing the synflood timestamp was
introduced by a0f82f64e2 ("syncookies: remove last_synq_overflow from
struct tcp_sock"). But unprotected accesses were already there when
timestamp was stored in .last_synq_overflow.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-12-06 21:05:14 -08:00
arch
block
certs
crypto
Documentation
drivers mlx5-fixes-2019-12-05 2019-12-06 20:52:16 -08:00
fs
include tcp: Protect accesses to .ts_recent_stamp with {READ,WRITE}_ONCE() 2019-12-06 21:05:14 -08:00
init
ipc
kernel bpf: Fix a bug when getting subprog 0 jited image in check_attach_btf_id 2019-12-04 21:20:07 -08:00
lib
LICENSES
mm
net tcp: md5: fix potential overestimation of TCP option space 2019-12-06 20:47:38 -08:00
samples samples/bpf: Fix broken xdp_rxq_info due to map order assumptions 2019-12-04 17:54:15 -08:00
scripts
security
sound
tools net/tls: Fix return values to avoid ENOTSUPP 2019-12-06 20:15:39 -08:00
usr
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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.