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Filename Latest commit message Latest commit date
Ralph Siemsen eebfb64c62 usb: cdns3: Fix deadlock when using NCM gadget
commit a1059896f2bfdcebcdc7153c3be2307ea319501f upstream.

The cdns3 driver has the same NCM deadlock as fixed in cdnsp by commit
58f2fcb3a845 ("usb: cdnsp: Fix deadlock issue during using NCM gadget").

Under PREEMPT_RT the deadlock can be readily triggered by heavy network
traffic, for example using "iperf --bidir" over NCM ethernet link.

The deadlock occurs because the threaded interrupt handler gets
preempted by a softirq, but both are protected by the same spinlock.
Prevent deadlock by disabling softirq during threaded irq handler.

Cc: stable <stable@kernel.org>
Fixes: 7733f6c32e ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20250318-rfs-cdns3-deadlock-v2-1-bfd9cfcee732@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-05-02 07:39:27 +02:00
arch MIPS: ds1287: Match ds1287_set_base_clock() function types 2025-05-02 07:39:23 +02:00
block block: fix 'kmem_cache of name 'bio-108' already exists' 2025-04-10 14:29:37 +02:00
certs
crypto crypto: testmgr - some more fixes to RSA test vectors 2025-03-13 12:43:21 +01:00
Documentation sched/isolation: Prevent boot crash when the boot CPU is nohz_full 2025-04-10 14:29:35 +02:00
drivers usb: cdns3: Fix deadlock when using NCM gadget 2025-05-02 07:39:27 +02:00
fs ext4: fix OOB read when checking dotdot dir 2025-05-02 07:39:24 +02:00
include misc: pci_endpoint_test: Use INTX instead of LEGACY 2025-05-02 07:39:25 +02:00
init module: sign with sha512 instead of sha1 by default 2025-05-02 07:39:21 +02:00
ipc
kernel ftrace: Add cond_resched() to ftrace_graph_set_hash() 2025-05-02 07:39:17 +02:00
lib lib: scatterlist: fix sg_split_phys to preserve original scatterlist offsets 2025-05-02 07:39:15 +02:00
LICENSES
mm mm: add missing release barrier on PGDAT_RECLAIM_LOCKED unlock 2025-05-02 07:39:16 +02:00
net net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too 2025-05-02 07:39:26 +02:00
samples samples/bpf: Fix a resource leak 2024-12-14 19:44:50 +01:00
scripts selinux: Chain up tool resolving errors in install_policy.sh 2025-04-10 14:29:39 +02:00
security ima: Fix use-after-free on a dentry's dname.name 2025-03-13 12:43:19 +01:00
sound ALSA: usb-audio: Fix CME quirk for UF series keyboards 2025-05-02 07:39:10 +02:00
tools pm: cpupower: bench: Prevent NULL dereference on malloc failure 2025-05-02 07:39:09 +02:00
usr
virt KVM: arm64: Ignore PMCNTENSET_EL0 while checking for overflow status 2024-12-19 18:05:04 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Remove *.orig pattern from .gitignore 2024-11-08 16:20:33 +01:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile kbuild: Add '-fno-builtin-wcslen' 2025-05-02 07:39:22 +02:00
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.