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Shenwei Wang 7c3a572e15 net: fec: fix the unhandled context fault from smmu 
[ Upstream commit 5e344807735023cd3a67c37a1852b849caa42620 ]

When repeatedly changing the interface link speed using the command below:

ethtool -s eth0 speed 100 duplex full
ethtool -s eth0 speed 1000 duplex full

The following errors may sometimes be reported by the ARM SMMU driver:

[ 5395.035364] fec 5b040000.ethernet eth0: Link is Down
[ 5395.039255] arm-smmu 51400000.iommu: Unhandled context fault:
fsr=0x402, iova=0x00000000, fsynr=0x100001, cbfrsynra=0x852, cb=2
[ 5398.108460] fec 5b040000.ethernet eth0: Link is Up - 100Mbps/Full -
flow control off

It is identified that the FEC driver does not properly stop the TX queue
during the link speed transitions, and this results in the invalid virtual
I/O address translations from the SMMU and causes the context faults.

Fixes: dbc64a8ea2 ("net: fec: move calls to quiesce/resume packet processing out of fec_restart()")
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://lore.kernel.org/r/20240123165141.2008104-1-shenwei.wang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-02-23 08:41:57 +01:00
arch KVM: use __vcalloc for very large allocations 2024-02-23 08:41:55 +01:00
block block: Remove special-casing of compound pages 2024-02-23 08:41:54 +01:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:13:17 +02:00
crypto crypto: api - Disallow identical driver names 2024-02-23 08:41:52 +01:00
Documentation rename(): fix the locking of subdirectories 2024-02-23 08:41:54 +01:00
drivers net: fec: fix the unhandled context fault from smmu 2024-02-23 08:41:57 +01:00
fs afs: Hide silly-rename files from userspace 2024-02-23 08:41:56 +01:00
include llc: Drop support for ETH_P_TR_802_2. 2024-02-23 08:41:56 +01:00
init rootfs: Fix support for rootfstype= when root= is given 2024-01-25 14:37:52 -08:00
io_uring io_uring/rw: ensure io->bytes_done is always initialized 2024-01-25 14:37:52 -08:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:24:00 +01:00
kernel tracing: Ensure visibility when inserting an element into tracing_map 2024-02-23 08:41:56 +01:00
lib ida: Fix crash in ida_free when the bitmap is empty 2024-01-25 14:37:38 -08:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm mm: vmalloc: introduce array allocation functions 2024-02-23 08:41:55 +01:00
net netfilter: nf_tables: validate NFPROTO_* family 2024-02-23 08:41:57 +01:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:01:09 +02:00
scripts stddef: Introduce DECLARE_FLEX_ARRAY() helper 2024-02-23 08:41:54 +01:00
security lsm: new security_file_ioctl_compat() hook 2024-02-23 08:41:53 +01:00
sound ALSA: hda/relatek: Enable Mute LED on HP Laptop 15s-fq2xxx 2024-01-25 14:37:52 -08:00
tools selftests: netdevsim: fix the udp_tunnel_nic test 2024-02-23 08:41:57 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:25:48 +01:00
virt KVM: use __vcalloc for very large allocations 2024-02-23 08:41:55 +01:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: generate Module.symvers only when vmlinux exists 2021-05-19 10:12:59 +02:00
.mailmap mailmap: add two more addresses of Uwe Kleine-König 2020-12-06 10:19:07 -08:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Jason Cooper to CREDITS 2020-11-30 10:20:34 +01:00
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 Remove DECnet support from kernel 2023-06-21 15:45:38 +02:00
Makefile Linux 5.10.209 2024-01-25 14:37:57 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.