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Filename Latest commit message Latest commit date
Stefano Garzarella 0b608b3392 vhost/vsock: don't check owner in vhost_vsock_stop() while releasing
commit a58da53ffd70294ebea8ecd0eb45fd0d74add9f9 upstream.

vhost_vsock_stop() calls vhost_dev_check_owner() to check the device
ownership. It expects current->mm to be valid.

vhost_vsock_stop() is also called by vhost_vsock_dev_release() when
the user has not done close(), so when we are in do_exit(). In this
case current->mm is invalid and we're releasing the device, so we
should clean it anyway.

Let's check the owner only when vhost_vsock_stop() is called
by an ioctl.

When invoked from release we can not fail so we don't check return
code of vhost_vsock_stop(). We need to stop vsock even if it's not
the owner.

Fixes: 433fc58e6b ("VSOCK: Introduce vhost_vsock.ko")
Cc: stable@vger.kernel.org
Reported-by: syzbot+1e3ea63db39f2b4440e0@syzkaller.appspotmail.com
Reported-and-tested-by: syzbot+3140b17cb44a7b174008@syzkaller.appspotmail.com
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-02 11:41:00 +01:00
arch arm64: dts: meson-g12: drop BL32 region from SEI510/SEI610 2022-02-23 12:00:01 +01:00
block block/wbt: fix negative inflight counter when remove scsi device 2022-02-23 11:59:59 +01:00
certs
crypto
Documentation bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:52:49 +01:00
drivers vhost/vsock: don't check owner in vhost_vsock_stop() while releasing 2022-03-02 11:41:00 +01:00
fs NFS: Do not report writeback errors in nfs_getattr() 2022-02-23 11:59:59 +01:00
include bonding: fix data-races around agg_select_timer 2022-02-23 11:59:58 +01:00
init bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:52:49 +01:00
ipc
kernel cgroup/cpuset: Fix a race between cpuset_attach() and cpu hotplug 2022-03-02 11:41:00 +01:00
lib lib/iov_iter: initialize "flags" in new pipe_buffer 2022-02-23 11:59:59 +01:00
LICENSES
mm
net netfilter: conntrack: don't refresh sctp entries in closed state 2022-02-23 12:00:00 +01:00
samples
scripts kconfig: fix failing to generate auto.conf 2022-02-23 12:00:01 +01:00
security ima: Do not print policy rule with inactive LSM labels 2022-02-16 12:52:47 +01:00
sound ASoC: ops: Fix stereo change notifications in snd_soc_put_volsw_range() 2022-02-23 11:59:58 +01:00
tools libsubcmd: Fix use-after-free for realloc(..., 0) 2022-02-23 11:59:58 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.181 2022-02-23 12:00:01 +01:00
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.