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Filename Latest commit message Latest commit date
Udipto Goswami 8f032eaebc usb: dwc3: gadget: Prevent core from processing stale TRBs
commit 117b4e96c7f362eb6459543883fc07f77662472c upstream.

With CPU re-ordering on write instructions, there might
be a chance that the HWO is set before the TRB is updated
with the new mapped buffer address.
And in the case where core is processing a list of TRBs
it is possible that it fetched the TRBs when the HWO is set
but before the buffer address is updated.
Prevent this by adding a memory barrier before the HWO
is updated to ensure that the core always process the
updated TRBs.

Fixes: f6bafc6a1c ("usb: dwc3: convert TRBs into bitshifts")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Signed-off-by: Udipto Goswami <quic_ugoswami@quicinc.com>
Link: https://lore.kernel.org/r/1644207958-18287-1-git-send-email-quic_ugoswami@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-16 12:52:52 +01:00
arch ARM: dts: imx6qdl-udoo: Properly describe the SD card detect 2022-02-16 12:52:50 +01:00
block block: bio-integrity: Advance seed correctly for larger interval sizes 2022-02-08 18:24:28 +01:00
certs
crypto crypto: pcrypt - Delay write to padata->info 2021-11-17 09:48:40 +01:00
Documentation bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:52:49 +01:00
drivers usb: dwc3: gadget: Prevent core from processing stale TRBs 2022-02-16 12:52:52 +01:00
fs NFSv4 expose nfs_parse_server_name function 2022-02-16 12:52:48 +01:00
include net: fix a memleak when uncloning an skb dst and its metadata 2022-02-16 12:52:51 +01:00
init bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:52:49 +01:00
ipc shm: extend forced shm destroy to support objects from several IPC nses 2021-12-01 09:23:35 +01:00
kernel PM: s2idle: ACPI: Fix wakeup interrupts handling 2022-02-16 12:52:50 +01:00
lib lib/test_meminit: destroy cache in kmem_cache_alloc_bulk() test 2022-01-27 09:19:55 +01:00
LICENSES
mm mm/kmemleak: avoid scanning potential huge holes 2022-02-08 18:24:28 +01:00
net tipc: rate limit warning for received illegal binding update 2022-02-16 12:52:51 +01:00
samples samples/kretprobes: Fix return value if register_kretprobe() failed 2021-11-17 09:48:39 +01:00
scripts scripts/dtc: dtx_diff: remove broken example from help text 2022-01-27 09:19:55 +01:00
security ima: Do not print policy rule with inactive LSM labels 2022-02-16 12:52:47 +01:00
sound ASoC: max9759: fix underflow in speaker_gain_control_put() 2022-02-08 18:24:33 +01:00
tools perf probe: Fix ppc64 'perf probe add events failed' case 2022-02-16 12:52:50 +01:00
usr
virt KVM: do not shrink halt_poll_ns below grow_start 2021-10-09 14:39:50 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.179 2022-02-11 09:07:52 +01:00
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.