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Pavel Skripkin 9e4a3f47ef i2c: validate user data in compat ioctl 
[ Upstream commit bb436283e2 ]

Wrong user data may cause warning in i2c_transfer(), ex: zero msgs.
Userspace should not be able to trigger warnings, so this patch adds
validation checks for user data in compact ioctl to prevent reported
warnings

Reported-and-tested-by: syzbot+e417648b303855b91d8a@syzkaller.appspotmail.com
Fixes: 7d5cb45655 ("i2c compat ioctls: move to ->compat_ioctl()")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-01-05 12:37:45 +01:00
arch ARM: 9169/1: entry: fix Thumb2 bug in iWMMXt exception handling 2021-12-29 12:23:37 +01:00
block block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2) 2021-12-14 14:49:02 +01:00
certs
crypto
Documentation Input: i8042 - add deferred probe support 2022-01-05 12:37:43 +01:00
drivers i2c: validate user data in compat ioctl 2022-01-05 12:37:45 +01:00
fs f2fs: fix to do sanity check on last xattr entry in __f2fs_setxattr() 2021-12-29 12:23:37 +01:00
include sctp: use call_rcu to free endpoint 2022-01-05 12:37:44 +01:00
init
ipc
kernel rcu: Mark accesses to rcu_state.n_force_qs 2021-12-22 09:29:40 +01:00
lib siphash: use _unaligned version by default 2021-12-08 09:01:12 +01:00
LICENSES
mm mm: mempolicy: fix THP allocations escaping mempolicy restrictions 2021-12-29 12:23:37 +01:00
net net/ncsi: check for error return from call to nla_put_u32 2022-01-05 12:37:45 +01:00
samples
scripts recordmcount.pl: fix typo in s390 mcount regex 2022-01-05 12:37:44 +01:00
security selinux: initialize proto variable in selinux_ip_postroute_compat() 2022-01-05 12:37:44 +01:00
sound ALSA: hda/realtek: Amp init fixup for HP ZBook 15 G6 2021-12-29 12:23:36 +01:00
tools selftests/net: udpgso_bench_tx: fix dst ip argument 2022-01-05 12:37:45 +01:00
usr
virt
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Makefile Linux 5.4.169 2021-12-29 12:23:38 +01:00
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.