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Filename Latest commit message Latest commit date
Alexandra Winter 3bc35da667 s390/qeth: Fix potential loss of L3-IP@ in case of network issues 
[ Upstream commit 2fe8a236436fe40d8d26a1af8d150fc80f04ee1a ]

Symptom:
In case of a bad cable connection (e.g. dirty optics) a fast sequence of
network DOWN-UP-DOWN-UP could happen. UP triggers recovery of the qeth
interface. In case of a second DOWN while recovery is still ongoing, it
can happen that the IP@ of a Layer3 qeth interface is lost and will not
be recovered by the second UP.

Problem:
When registration of IP addresses with Layer 3 qeth devices fails, (e.g.
because of bad address format) the respective IP address is deleted from
its hash-table in the driver. If registration fails because of a ENETDOWN
condition, the address should stay in the hashtable, so a subsequent
recovery can restore it.

3caa4af834 ("qeth: keep ip-address after LAN_OFFLINE failure")
fixes this for registration failures during normal operation, but not
during recovery.

Solution:
Keep L3-IP address in case of ENETDOWN in qeth_l3_recover_ip(). For
consistency with qeth_l3_add_ip() we also keep it in case of EADDRINUSE,
i.e. for some reason the card already/still has this address registered.

Fixes: 4a71df5004 ("qeth: new qeth device driver")
Cc: stable@vger.kernel.org
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://lore.kernel.org/r/20240206085849.2902775-1-wintera@linux.ibm.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-03-01 13:13:34 +01:00
arch mips: Fix max_mapnr being uninitialized on early stages 2024-02-23 08:25:13 +01:00
block blk-mq: fix IO hang from sbitmap wakeup race 2024-02-23 08:25:03 +01:00
certs
crypto crypto: api - Disallow identical driver names 2024-02-23 08:24:48 +01:00
Documentation net: sysfs: Fix /sys/class/net/<iface> path 2024-02-23 08:25:05 +01:00
drivers s390/qeth: Fix potential loss of L3-IP@ in case of network issues 2024-03-01 13:13:34 +01:00
fs ext4: avoid allocating blocks from corrupted group in ext4_mb_find_by_goal() 2024-03-01 13:13:33 +01:00
include netfilter: nf_tables: fix pointer math issue in nft_byteorder_eval() 2024-02-23 08:25:15 +01:00
init rootfs: Fix support for rootfstype= when root= is given 2024-01-25 14:34:30 -08:00
ipc
kernel sched/rt: Disallow writing invalid values to sched_rt_period_us 2024-03-01 13:13:33 +01:00
lib ida: Fix crash in ida_free when the bitmap is empty 2024-01-25 14:34:21 -08:00
LICENSES
mm userfaultfd: fix mmap_changing checking in mfill_atomic_hugetlb 2024-03-01 13:13:33 +01:00
net netfilter: conntrack: check SCTP_CID_SHUTDOWN_ACK for vtag setting in sctp_new 2024-03-01 13:13:34 +01:00
samples samples/bpf: Fix buffer overflow in tcp_basertt 2023-07-27 08:37:07 +02:00
scripts kbuild: Fix changing ELF file type for output of gen_btf for big endian 2024-02-23 08:25:10 +01:00
security lsm: new security_file_ioctl_compat() hook 2024-02-23 08:25:15 +01:00
sound ASoC: sunxi: sun4i-spdif: Add support for Allwinner H616 2024-03-01 13:13:34 +01:00
tools selftests: net: avoid just another constant wait 2024-02-23 08:25:06 +01:00
usr
virt KVM: arm64: vgic-its: Test for valid IRQ in MOVALL handler 2024-03-01 13:13:32 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS iio: stx104: Move to addac subdirectory 2023-08-30 16:27:12 +02:00
Makefile Linux 5.4.269 2024-02-23 08:25:15 +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.