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Florent Fourcot 109f1fe215 rtnetlink: return ENODEV when ifname does not exist and group is given 
[ Upstream commit ef2a7c9065 ]

When the interface does not exist, and a group is given, the given
parameters are being set to all interfaces of the given group. The given
IFNAME/ALT_IF_NAME are being ignored in that case.

That can be dangerous since a typo (or a deleted interface) can produce
weird side effects for caller:

Case 1:

 IFLA_IFNAME=valid_interface
 IFLA_GROUP=1
 MTU=1234

Case 1 will update MTU and group of the given interface "valid_interface".

Case 2:

 IFLA_IFNAME=doesnotexist
 IFLA_GROUP=1
 MTU=1234

Case 2 will update MTU of all interfaces in group 1. IFLA_IFNAME is
ignored in this case

This behaviour is not consistent and dangerous. In order to fix this issue,
we now return ENODEV when the given IFNAME does not exist.

Signed-off-by: Florent Fourcot <florent.fourcot@wifirst.fr>
Signed-off-by: Brian Baboch <brian.baboch@wifirst.fr>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Stable-dep-of: 30188bd783 ("rtnetlink: Reject negative ifindexes in RTM_NEWLINK")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-09-05 01:25:06 +08:00
arch MIPS: cpu-features: Use boot_cpu_type for CPU type based features 2023-09-05 01:25:04 +08:00
block block/partition: fix signedness issue for Amiga partitions 2023-08-20 15:24:51 +08:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2023-04-19 17:50:34 +08:00
crypto KEYS: asymmetric: Copy sig and digest in public_key_verify_signature() 2023-08-20 15:21:12 +08:00
Documentation x86/cpu: Rename srso_(.*)_alias to srso_alias_\1 2023-08-28 23:27:07 +08:00
drivers igc: Fix the typo in the PTM Control macro 2023-09-05 01:25:06 +08:00
fs jbd2: fix a race when checking checkpoint buffer busy 2023-09-05 01:25:04 +08:00
include net: validate veth and vxcan peer ifindexes 2023-09-05 01:25:06 +08:00
init x86/mm: Initialize text poking earlier 2023-08-20 16:01:29 +08:00
io_uring io_uring: correct check for O_TMPFILE 2023-08-20 16:01:40 +08:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2023-04-19 17:56:54 +08:00
kernel tracing: Fix memleak due to race between current_tracer and trace 2023-09-05 01:25:05 +08:00
lib test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation 2023-08-20 15:24:43 +08:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm mm/damon/ops-common: atomically test and clear young on ptes and pmds 2023-08-20 15:24:58 +08:00
net rtnetlink: return ENODEV when ifname does not exist and group is given 2023-09-05 01:25:06 +08:00
samples samples: ftrace: Save required argument registers in sample trampolines 2023-08-20 16:01:05 +08:00
scripts kbuild: Disable GCOV for *.mod.o 2023-08-20 15:24:38 +08:00
security security: keys: Modify mismatched function name 2023-08-20 16:01:12 +08:00
sound ALSA: pcm: Fix potential data race at PCM memory allocation helpers 2023-09-05 01:25:04 +08:00
tools objtool/x86: Fix SRSO mess 2023-09-05 01:25:02 +08:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2023-04-19 17:44:58 +08:00
virt KVM: Grab a reference to KVM for VM and vCPU stats file descriptors 2023-08-20 16:01:23 +08:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS iio: stx104: Move to addac subdirectory 2023-08-28 23:26:58 +08:00
Makefile Linux 5.15.128 2023-08-28 23:27:08 +08:00
README
stfsync.txt add file to track last rebase commit from stf 2023-08-21 00:12:49 +08:00

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.