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Filename Latest commit message Latest commit date
Jason Baron e07d0ccd7f tcp: correct read of TFO keys on big endian systems 
[ Upstream commit f19008e676366c44e9241af57f331b6c6edf9552 ]

When TFO keys are read back on big endian systems either via the global
sysctl interface or via getsockopt() using TCP_FASTOPEN_KEY, the values
don't match what was written.

For example, on s390x:

# echo "1-2-3-4" > /proc/sys/net/ipv4/tcp_fastopen_key
# cat /proc/sys/net/ipv4/tcp_fastopen_key
02000000-01000000-04000000-03000000

Instead of:

# cat /proc/sys/net/ipv4/tcp_fastopen_key
00000001-00000002-00000003-00000004

Fix this by converting to the correct endianness on read. This was
reported by Colin Ian King when running the 'tcp_fastopen_backup_key' net
selftest on s390x, which depends on the read value matching what was
written. I've confirmed that the test now passes on big and little endian
systems.

Signed-off-by: Jason Baron <jbaron@akamai.com>
Fixes: 438ac88009 ("net: fastopen: robustness and endianness fixes for SipHash")
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Eric Dumazet <edumazet@google.com>
Reported-and-tested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-19 08:16:23 +02:00
arch crypto: aesni - add compatibility with IAS 2020-08-19 08:16:22 +02:00
block iocost: Fix check condition of iocg abs_vdebt 2020-08-19 08:15:58 +02:00
certs
crypto
Documentation iio: improve IIO_CONCENTRATION channel type description 2020-08-19 08:16:07 +02:00
drivers net: phy: fix memory leak in device-create error path 2020-08-19 08:16:22 +02:00
fs ocfs2: fix unbalanced locking 2020-08-19 08:16:21 +02:00
include tcp: correct read of TFO keys on big endian systems 2020-08-19 08:16:23 +02:00
init
ipc
kernel seccomp: Fix ioctl number for SECCOMP_IOCTL_NOTIF_ID_VALID 2020-08-19 08:15:58 +02:00
lib kobject: Avoid premature parent object freeing in kobject_cleanup() 2020-08-19 08:16:11 +02:00
LICENSES
mm mm/mmap.c: Add cond_resched() for exit_mmap() CPU stalls 2020-08-19 08:16:02 +02:00
net tcp: correct read of TFO keys on big endian systems 2020-08-19 08:16:23 +02:00
samples bpf: Fix fds_example SIGSEGV error 2020-08-19 08:16:03 +02:00
scripts recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64. 2020-08-19 08:15:57 +02:00
security Smack: prevent underflow in smk_set_cipso() 2020-08-19 08:16:16 +02:00
sound ASoC: fsl_sai: Fix value of FSL_SAI_CR1_RFW_MASK 2020-08-19 08:16:18 +02:00
tools tools, bpftool: Fix wrong return value in do_dump() 2020-08-19 08:16:19 +02:00
usr
virt
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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.