linux-stable.git/Documentation, branch v6.2.12

tcp: restrict net.ipv4.tcp_app_win

2023-04-20T10:36:54+00:00

[ Upstream commit dc5110c2d959c1707e12df5f792f41d90614adaa ]

UBSAN: shift-out-of-bounds in net/ipv4/tcp_input.c:555:23
shift exponent 255 is too large for 32-bit type 'int'
CPU: 1 PID: 7907 Comm: ssh Not tainted 6.3.0-rc4-00161-g62bad54b26db-dirty #206
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Call Trace:
 
 dump_stack_lvl+0x136/0x150
 __ubsan_handle_shift_out_of_bounds+0x21f/0x5a0
 tcp_init_transfer.cold+0x3a/0xb9
 tcp_finish_connect+0x1d0/0x620
 tcp_rcv_state_process+0xd78/0x4d60
 tcp_v4_do_rcv+0x33d/0x9d0
 __release_sock+0x133/0x3b0
 release_sock+0x58/0x1b0

'maxwin' is int, shifting int for 32 or more bits is undefined behaviour.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: YueHaibing 
Reviewed-by: Eric Dumazet 
Reviewed-by: Kuniyuki Iwashima 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

ALSA: hda/sigmatel: add pin overrides for Intel DP45SG motherboard

2023-04-20T10:36:50+00:00

commit c17f8fd31700392b1bb9e7b66924333568cb3700 upstream.

Like the other boards from the D*45* series, this one sets up the
outputs not quite correctly.

Signed-off-by: Oswald Buddenhagen 
Cc: 
Link: https://lore.kernel.org/r/20230405201220.2197826-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai 
Signed-off-by: Greg Kroah-Hartman

zsmalloc: document freeable stats

2023-04-13T15:02:54+00:00

commit 618a8a917dbf5830e2064d2fa0568940eb5d2584 upstream.

When freeable class stat was added to classes file (back in 2016) we
forgot to update zsmalloc documentation.  Fix that.

Link: https://lkml.kernel.org/r/20230325024631.2817153-3-senozhatsky@chromium.org
Fixes: 1120ed548394 ("mm/zsmalloc: add `freeable' column to pool stat")
Signed-off-by: Sergey Senozhatsky 
Cc: Minchan Kim 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: renesas,scif: Fix 4th IRQ for 4-IRQ SCIFs

2023-04-13T15:02:47+00:00

commit 7b21f329ae0ab6361c0aebfc094db95821490cd1 upstream.

The fourth interrupt on SCIF variants with four interrupts (RZ/A1) is
the Break interrupt, not the Transmit End interrupt (like on SCI(g)).
Update the description and interrupt name to fix this.

Fixes: 384d00fae8e51f8f ("dt-bindings: serial: sh-sci: Convert to json-schema")
Cc: stable 
Signed-off-by: Geert Uytterhoeven 
Acked-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/719d1582e0ebbe3d674e3a48fc26295e1475a4c3.1679046394.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman

dt-bindings: mtd: jedec,spi-nor: Document CPOL/CPHA support

2023-04-06T10:12:45+00:00

commit a56cde41340ac4049fa6edac9e6cfbcd2804074e upstream.

SPI EEPROMs typically support both SPI Mode 0 (CPOL=CPHA=0) and Mode 3
(CPOL=CPHA=1).  However, using the latter is currently flagged as an
error by "make dtbs_check", e.g.:

    arch/arm/boot/dts/r8a7791-koelsch.dtb: flash@0: Unevaluated properties are not allowed ('spi-cpha', 'spi-cpol' were unexpected)
	    From schema: Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml

Fix this by documenting support for CPOL=CPHA=1.

Fixes: 233363aba72ac638 ("spi/panel: dt-bindings: drop CPHA and CPOL from common properties")
Cc: stable@vger.kernel.org
Signed-off-by: Geert Uytterhoeven 
Reviewed-by: Miquel Raynal 
Reviewed-by: Krzysztof Kozlowski 
Reviewed-by: Tudor Ambarus 
Signed-off-by: Miquel Raynal 
Link: https://lore.kernel.org/linux-mtd/afe470603028db9374930b0c57464b1f6d52bdd3.1676384304.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman

docs: Correct missing "d_" prefix for dentry_operations member d_weak_revalidate

2023-03-22T12:37:42+00:00

[ Upstream commit 74596085796fae0cfce3e42ee46bf4f8acbdac55 ]

The details for struct dentry_operations member d_weak_revalidate is
missing a "d_" prefix.

Fixes: af96c1e304f7 ("docs: filesystems: vfs: Convert vfs.txt to RST")
Signed-off-by: Glenn Washburn 
Reviewed-by: Matthew Wilcox (Oracle) 
Link: https://lore.kernel.org/r/20230227184042.2375235-1-development@efficientek.com
Signed-off-by: Jonathan Corbet 
Signed-off-by: Sasha Levin

usb: gadget: uvc: Make bSourceID read/write

2023-03-11T12:50:44+00:00

[ Upstream commit b3c839bd8a07d303bc59a900d55dd35c7826562c ]

At the moment, the UVC function graph is hardcoded IT -> PU -> OT.
To add XU support we need the ability to insert the XU descriptors
into the chain. To facilitate that, make the output terminal's
bSourceID attribute writeable so that we can configure its source.

Signed-off-by: Daniel Scally 
Link: https://lore.kernel.org/r/20230206161802.892954-2-dan.scally@ideasonboard.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

dt-bindings: usb: Add device id for Genesys Logic hub controller

2023-03-11T12:50:40+00:00

[ Upstream commit b72654148e34c181f532275d03ef6f37de288f24 ]

Add usb hub device id for Genesys Logic, Inc. GL852G Hub USB 2.0
root hub.

Signed-off-by: Anand Moon 
Acked-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20230118044418.875-2-linux.amoon@gmail.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

mm: memcontrol: deprecate charge moving

2023-03-10T08:29:49+00:00

commit da34a8484d162585e22ed8c1e4114aa2f60e3567 upstream.

Charge moving mode in cgroup1 allows memory to follow tasks as they
migrate between cgroups.  This is, and always has been, a questionable
thing to do - for several reasons.

First, it's expensive.  Pages need to be identified, locked and isolated
from various MM operations, and reassigned, one by one.

Second, it's unreliable.  Once pages are charged to a cgroup, there isn't
always a clear owner task anymore.  Cache isn't moved at all, for example.
Mapped memory is moved - but if trylocking or isolating a page fails,
it's arbitrarily left behind.  Frequent moving between domains may leave a
task's memory scattered all over the place.

Third, it isn't really needed.  Launcher tasks can kick off workload tasks
directly in their target cgroup.  Using dedicated per-workload groups
allows fine-grained policy adjustments - no need to move tasks and their
physical pages between control domains.  The feature was never
forward-ported to cgroup2, and it hasn't been missed.

Despite it being a niche usecase, the maintenance overhead of supporting
it is enormous.  Because pages are moved while they are live and subject
to various MM operations, the synchronization rules are complicated.
There are lock_page_memcg() in MM and FS code, which non-cgroup people
don't understand.  In some cases we've been able to shift code and cgroup
API calls around such that we can rely on native locking as much as
possible.  But that's fragile, and sometimes we need to hold MM locks for
longer than we otherwise would (pte lock e.g.).

Mark the feature deprecated. Hopefully we can remove it soon.

And backport into -stable kernels so that people who develop against
earlier kernels are warned about this deprecation as early as possible.

[akpm@linux-foundation.org: fix memory.rst underlining]
Link: https://lkml.kernel.org/r/Y5COd+qXwk/S+n8N@cmpxchg.org
Signed-off-by: Johannes Weiner 
Acked-by: Shakeel Butt 
Acked-by: Hugh Dickins 
Acked-by: Michal Hocko 
Cc: Muchun Song 
Cc: Roman Gushchin 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

docs: gdbmacros: print newest record

2023-03-10T08:29:49+00:00

commit f2e4cca2f670c8e52fbb551a295f2afc9aa2bd72 upstream.

@head_id points to the newest record, but the printing loop
exits when it increments to this value (before printing).

Exit the printing loop after the newest record has been printed.

The python-based function in scripts/gdb/linux/dmesg.py already
does this correctly.

Fixes: e60768311af8 ("scripts/gdb: update for lockless printk ringbuffer")
Cc: stable@vger.kernel.org
Signed-off-by: John Ogness 
Reviewed-by: Petr Mladek 
Signed-off-by: Petr Mladek 
Link: https://lore.kernel.org/r/20221229134339.197627-1-john.ogness@linutronix.de
Signed-off-by: Greg Kroah-Hartman