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The source for the Linux kernel used in Windows Subsystem for Linux 2 (WSL2)
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Mathias Nyman 831a1ffb0a xhci: Fix incorrect tracking of free space on transfer rings 
commit fe82f16aaf upstream.

This incorrect tracking caused unnecessary ring expansion in some
usecases which over days of use consume a lot of memory.

xhci driver tries to keep track of free transfer blocks (TRBs) on the
ring buffer, but failed to add back some cancelled transfers that were
turned into no-op operations instead of just moving past them.

This can happen if there are several queued pending transfers which
then are cancelled in reverse order.

Solve this by counting the numer of steps we move the dequeue pointer
once we complete a transfer, and add it to the number of free trbs
instead of just adding the trb number of the current transfer.
This way we ensure we count the no-op trbs on the way as well.

Fixes: 55f6153d8c ("xhci: remove extra loop in interrupt context")
Cc: stable@vger.kernel.org
Reported-by: Miller Hunter <MillerH@hearthnhome.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217242
Tested-by: Miller Hunter <MillerH@hearthnhome.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230515134059.161110-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-05-24 17:36:53 +01:00
Documentation dt-bindings: display/msm: dsi-controller-main: Document qcom, master-dsi and qcom, sync-dual-dsi 2023-05-24 17:36:49 +01:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
arch parisc: Replace regular spinlock with spin_trylock on panic path 2023-05-24 17:36:48 +01:00
block blk-crypto: make blk_crypto_evict_key() more robust 2023-05-11 23:00:16 +09:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:22:01 +02:00
crypto crypto: engine - fix crypto_queue backlog handling 2023-05-17 11:50:20 +02:00
drivers xhci: Fix incorrect tracking of free space on transfer rings 2023-05-24 17:36:53 +01:00
fs fs/ntfs3: Fix a possible null-pointer dereference in ni_clear() 2023-05-24 17:36:47 +01:00
include SUNRPC: always free ctxt when freeing deferred request 2023-05-24 17:36:51 +01:00
init kbuild: Add CONFIG_PAHOLE_VERSION 2023-02-25 12:06:45 +01:00
io_uring io_uring: avoid null-ptr-deref in io_arm_poll_handler 2023-03-22 13:31:37 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:28:45 +01:00
kernel bpf: Add preempt_count_{sub,add} into btf id deny list 2023-05-24 17:36:45 +01:00
lib lib: cpu_rmap: Avoid use after free on rmap->obj array entries 2023-05-24 17:36:45 +01:00
mm writeback, cgroup: fix null-ptr-deref write in bdi_split_work_to_wbs 2023-05-11 23:00:18 +09:00
net bridge: always declare tunnel functions 2023-05-24 17:36:52 +01:00
samples samples/bpf: Fix fout leak in hbm's run_bpf_prog 2023-05-24 17:36:45 +01:00
scripts recordmcount: Fix memory leaks in the uwrite function 2023-05-24 17:36:47 +01:00
security selinux: ensure av_permissions.h is built when needed 2023-05-11 23:00:19 +09:00
sound ALSA: usb-audio: Add a sample rate workaround for Line6 Pod Go 2023-05-24 17:36:52 +01:00
tools selftets: seg6: disable rp_filter by default in srv6_end_dt4_l3vpn_test 2023-05-24 17:36:49 +01:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:27:15 +01:00
virt KVM: fix memoryleak in kvm_init() 2023-03-17 08:49:04 +01:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.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 .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 platform/x86: Move existing HP drivers to a new hp subdir 2023-05-24 17:36:48 +01:00
Makefile Linux 5.15.112 2023-05-17 11:50:31 +02:00
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.