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Johannes Berg 19614ef797 um: chan_user: Fix winch_tramp() return value 
commit 57ae0b67b7 upstream.

The previous fix here was only partially correct, it did
result in returning a proper error value in case of error,
but it also clobbered the pid that we need to return from
this function (not just zero for success).

As a result, it returned 0 here, but later this is treated
as a pid and used to kill the process, but since it's now
0 we kill(0, SIGKILL), which makes UML kill itself rather
than just the helper thread.

Fix that and make it more obvious by using a separate
variable for the pid.

Fixes: ccf1236eca ("um: fix error return code in winch_tramp()")
Reported-and-tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-09 10:30:50 +02:00
arch um: chan_user: Fix winch_tramp() return value 2022-06-09 10:30:50 +02:00
block block: Fix potential deadlock in blk_ia_range_sysfs_show() 2022-06-09 10:30:44 +02:00
certs Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
crypto crypto: cryptd - Protect per-CPU resource by disabling BH. 2022-06-09 10:30:30 +02:00
Documentation landlock: Reduce the maximum number of layers to 16 2022-06-09 10:30:47 +02:00
drivers mt76: fix use-after-free by removing a non-RCU wcid pointer 2022-06-09 10:30:50 +02:00
fs ocfs2: dlmfs: fix error handling of user_dlm_destroy_lock 2022-06-09 10:30:45 +02:00
include mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N 2022-06-09 10:30:49 +02:00
init Kconfig: Add option for asm goto w/ tied outputs to workaround clang-13 bug 2022-06-09 10:30:49 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-09 10:30:30 +02:00
kernel tracing: Initialize integer variable to prevent garbage return value 2022-06-09 10:30:44 +02:00
lib lib/string_helpers: fix not adding strarray to device's resource list 2022-06-09 10:30:49 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm, compaction: fast_find_migrateblock() should return pfn in the target zone 2022-06-09 10:30:44 +02:00
net mac80211: upgrade passive scan to active scan on DFS channels after beacon rx 2022-06-09 10:30:50 +02:00
samples samples/landlock: Format with clang-format 2022-06-09 10:30:46 +02:00
scripts scripts/faddr2line: Fix overlapping text section failures 2022-06-09 10:30:10 +02:00
security ima: remove the IMA_TEMPLATE Kconfig option 2022-06-09 10:30:49 +02:00
sound ASoC: atmel-classd: Remove endianness flag on class d component 2022-06-09 10:30:29 +02:00
tools landlock: Fix same-layer rule unions 2022-06-09 10:30:48 +02:00
usr Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
virt KVM: Free new dirty bitmap if creating a new memslot fails 2022-05-20 13:02:05 -04:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap hotfixes for 5.18-rc7 2022-05-13 10:22:37 -07:00
COPYING
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Merge branch 'arm/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc 2022-05-18 14:07:43 -10:00
Makefile Linux 5.18.2 2022-06-06 08:49:00 +02:00
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.