Commit graph

1,015,615 commits

Author SHA1 Message Date
Joerg Roedel
2497ef4cc7 crypto: ccp - Annotate SEV Firmware file names
commit c8671c7dc7 upstream.

Annotate the firmware files CCP might need using MODULE_FIRMWARE().
This will get them included into an initrd when CCP is also included
there. Otherwise the CCP module will not find its firmware when loaded
before the root-fs is mounted.
This can cause problems when the pre-loaded SEV firmware is too old to
support current SEV and SEV-ES virtualization features.

Fixes: e93720606e ("crypto: ccp - Allow SEV firmware to be chosen based on Family and Model")
Cc: stable@vger.kernel.org # v4.20+
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:07 +02:00
Kees Cook
ef70c1c3ce crypto: nx - Fix memcpy() over-reading in nonce
commit 74c66120fd upstream.

Fix typo in memcpy() where size should be CTR_RFC3686_NONCE_SIZE.

Fixes: 030f4e9687 ("crypto: nx - Fix reentrancy bugs")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:07 +02:00
Alexander Larkin
81acf10152 Input: joydev - prevent use of not validated data in JSIOCSBTNMAP ioctl
commit f8f84af5da upstream.

Even though we validate user-provided inputs we then traverse past
validated data when applying the new map. The issue was originally
discovered by Murray McAllister with this simple POC (if the following
is executed by an unprivileged user it will instantly panic the system):

int main(void) {
	int fd, ret;
	unsigned int buffer[10000];

	fd = open("/dev/input/js0", O_RDONLY);
	if (fd == -1)
		printf("Error opening file\n");

	ret = ioctl(fd, JSIOCSBTNMAP & ~IOCSIZE_MASK, &buffer);
	printf("%d\n", ret);
}

The solution is to traverse internal buffer which is guaranteed to only
contain valid date when constructing the map.

Fixes: 182d679b22 ("Input: joydev - prevent potential read overflow in ioctl")
Fixes: 999b874f4a ("Input: joydev - validate axis/button maps before clobbering current ones")
Reported-by: Murray McAllister <murray.mcallister@gmail.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Alexander Larkin <avlarkin82@gmail.com>
Link: https://lore.kernel.org/r/20210620120030.1513655-1-avlarkin82@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:07 +02:00
Takashi Iwai
4f73f383f4 Input: elants_i2c - fix NULL dereference at probing
commit b9c0ebb867 upstream.

The recent change in elants_i2c driver to support more chips
introduced a regression leading to Oops at probing.  The driver reads
id->driver_data, but the id may be NULL depending on the device type
the driver gets bound.

Replace the driver data extraction with the device_get_match_data()
helper, and define the driver data in OF table, too.

Fixes: 9517b95bdc ("Input: elants_i2c - add support for eKTF3624")
BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1186454
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210528071024.26450-1-tiwai@suse.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:07 +02:00
Al Viro
fcc4582ff2 iov_iter_fault_in_readable() should do nothing in xarray case
commit 0e8f0d6740 upstream.

... and actually should just check it's given an iovec-backed iterator
in the first place.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:07 +02:00
Al Viro
3854f9c612 teach copy_page_to_iter() to handle compound pages
commit 08aa647960 upstream.

	In situation when copy_page_to_iter() got a compound page the current
code would only work on systems with no CONFIG_HIGHMEM.  It *is* the majority
of real-world setups, or we would've drown in bug reports by now.  Still needs
fixing.

	Current variant works for solitary page; rename that to
__copy_page_to_iter() and turn the handling of compound pages into a loop over
subpages.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:06 +02:00
Al Viro
64c430ea07 copy_page_to_iter(): fix ITER_DISCARD case
commit a506abc7b6 upstream.

we need to advance the iterator...

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:06 +02:00
Kees Cook
baf1972e79 selftests/lkdtm: Avoid needing explicit sub-shell
commit 04831e892b upstream.

Some environments do not set $SHELL when running tests. There's no
need to use $SHELL here anyway, since "cat" can be used to receive any
delivered signals from the kernel. Additionally avoid using bash-isms
in the command, and record stderr for posterity.

Fixes: 46d1a0f03d ("selftests/lkdtm: Add tests for LKDTM targets")
Cc: stable@vger.kernel.org
Suggested-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210623203936.3151093-2-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:06 +02:00
Desmond Cheong Zhi Xi
9e4ac5eba0 ntfs: fix validity check for file name attribute
commit d98e4d9541 upstream.

When checking the file name attribute, we want to ensure that it fits
within the bounds of ATTR_RECORD.  To do this, we should check that (attr
record + file name offset + file name length) < (attr record + attr record
length).

However, the original check did not include the file name offset in the
calculation.  This means that corrupted on-disk metadata might not caught
by the incorrect file name check, and lead to an invalid memory access.

An example can be seen in the crash report of a memory corruption error
found by Syzbot:
https://syzkaller.appspot.com/bug?id=a1a1e379b225812688566745c3e2f7242bffc246

Adding the file name offset to the validity check fixes this error and
passes the Syzbot reproducer test.

Link: https://lkml.kernel.org/r/20210614050540.289494-1-desmondcheongzx@gmail.com
Signed-off-by: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>
Reported-by: syzbot+213ac8bb98f7f4420840@syzkaller.appspotmail.com
Tested-by: syzbot+213ac8bb98f7f4420840@syzkaller.appspotmail.com
Acked-by: Anton Altaparmakov <anton@tuxera.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:06 +02:00
Andreas Gruenbacher
d089a9af0c gfs2: Fix error handling in init_statfs
commit 5d49d3508b upstream.

On an error path, init_statfs calls iput(pn) after pn has already been put.
Fix that by setting pn to NULL after the initial iput.

Fixes: 97fd734ba1 ("gfs2: lookup local statfs inodes prior to journal recovery")
Cc: stable@vger.kernel.org # v5.10+
Reported-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:06 +02:00
Andreas Gruenbacher
396a707096 gfs2: Fix underflow in gfs2_page_mkwrite
commit d3c51c55cb upstream.

On filesystems with a block size smaller than PAGE_SIZE and non-empty
files smaller then PAGE_SIZE, gfs2_page_mkwrite could end up allocating
excess blocks beyond the end of the file, similar to fallocate.  This
doesn't make sense; fix it.

Reported-by: Bob Peterson <rpeterso@redhat.com>
Fixes: 184b4e6085 ("gfs2: Fix end-of-file handling in gfs2_page_mkwrite")
Cc: stable@vger.kernel.org # v5.5+
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:06 +02:00
Mike Rapoport
73b4b15fa7 mm/page_alloc: fix memory map initialization for descending nodes
commit 122e093c17 upstream.

On systems with memory nodes sorted in descending order, for instance Dell
Precision WorkStation T5500, the struct pages for higher PFNs and
respectively lower nodes, could be overwritten by the initialization of
struct pages corresponding to the holes in the memory sections.

For example for the below memory layout

[    0.245624] Early memory node ranges
[    0.248496]   node   1: [mem 0x0000000000001000-0x0000000000090fff]
[    0.251376]   node   1: [mem 0x0000000000100000-0x00000000dbdf8fff]
[    0.254256]   node   1: [mem 0x0000000100000000-0x0000001423ffffff]
[    0.257144]   node   0: [mem 0x0000001424000000-0x0000002023ffffff]

the range 0x1424000000 - 0x1428000000 in the beginning of node 0 starts in
the middle of a section and will be considered as a hole during the
initialization of the last section in node 1.

The wrong initialization of the memory map causes panic on boot when
CONFIG_DEBUG_VM is enabled.

Reorder loop order of the memory map initialization so that the outer loop
will always iterate over populated memory regions in the ascending order
and the inner loop will select the zone corresponding to the PFN range.

This way initialization of the struct pages for the memory holes will be
always done for the ranges that are actually not populated.

[akpm@linux-foundation.org: coding style fixes]

Link: https://lkml.kernel.org/r/YNXlMqBbL+tBG7yq@kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=213073
Link: https://lkml.kernel.org/r/20210624062305.10940-1-rppt@kernel.org
Fixes: 0740a50b9b ("mm/page_alloc.c: refactor initialization of struct page for holes in memory layout")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Boris Petkov <bp@alien8.de>
Cc: Robert Shteynfeld <robert.shteynfeld@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Hildenbrand <david@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:06 +02:00
Zhangjiantao (Kirin, nanjing)
6f648906e8 xhci: solve a double free problem while doing s4
commit b31d9d6d7a upstream.

when system is doing s4, the process of xhci_resume may be as below:
1、xhci_mem_cleanup
2、xhci_init->xhci_mem_init->xhci_mem_cleanup(when memory is not enough).
xhci_mem_cleanup will be executed twice when system is out of memory.
xhci->port_caps is freed in xhci_mem_cleanup,but it isn't set to NULL.
It will be freed twice when xhci_mem_cleanup is called the second time.

We got following bug when system resumes from s4:

kernel BUG at mm/slub.c:309!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
CPU: 0 PID: 5929 Tainted: G S   W   5.4.96-arm64-desktop #1
pc : __slab_free+0x5c/0x424
lr : kfree+0x30c/0x32c

Call trace:
 __slab_free+0x5c/0x424
 kfree+0x30c/0x32c
 xhci_mem_cleanup+0x394/0x3cc
 xhci_mem_init+0x9ac/0x1070
 xhci_init+0x8c/0x1d0
 xhci_resume+0x1cc/0x5fc
 xhci_plat_resume+0x64/0x70
 platform_pm_thaw+0x28/0x60
 dpm_run_callback+0x54/0x24c
 device_resume+0xd0/0x200
 async_resume+0x24/0x60
 async_run_entry_fn+0x44/0x110
 process_one_work+0x1f0/0x490
 worker_thread+0x5c/0x450
 kthread+0x158/0x160
 ret_from_fork+0x10/0x24

Original patch that caused this issue was backported to 4.4 stable,
so this should be backported to 4.4 stabe as well.

Fixes: cf0ee7c60c ("xhci: Fix memory leak when caching protocol extended capability PSI tables - take 2")
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Jiantao Zhang <water.zhangjiantao@huawei.com>
Signed-off-by: Tao Xue <xuetao09@huawei.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210617150354.1512157-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Jing Xiangfeng
2802e5d707 usb: typec: Add the missed altmode_id_remove() in typec_register_altmode()
commit 03026197bb upstream.

typec_register_altmode() misses to call altmode_id_remove() in an error
path. Add the missed function call to fix it.

Fixes: 8a37d87d72 ("usb: typec: Bus type for alternate modes")
Cc: stable <stable@vger.kernel.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Link: https://lore.kernel.org/r/20210617073226.47599-1-jingxiangfeng@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Kyle Tso
ec357da5b4 usb: typec: tcpm: Relax disconnect threshold during power negotiation
commit 2b537cf877 upstream.

If the voltage is being decreased in power negotiation, the Source will
set the power supply to operate at the new voltage level before sending
PS_RDY. Relax the threshold before sending Request Message so that it
will not race with Source which begins to adjust the voltage right after
it sends Accept Message (PPS) or tSrcTransition (25~35ms) after it sends
Accept Message (non-PPS).

The real threshold will be set after Sink receives PS_RDY Message.

Fixes: f321a02cae ("usb: typec: tcpm: Implement enabling Auto Discharge disconnect support")
Cc: stable <stable@vger.kernel.org>
Cc: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Kyle Tso <kyletso@google.com>
Link: https://lore.kernel.org/r/20210616090102.1897674-1-kyletso@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Badhri Jagan Sridharan
d864070b33 usb: typec: tcpci: Fix up sink disconnect thresholds for PD
commit 4288debeaa upstream.

"Table 4-3 VBUS Sink Characteristics" of "Type-C Cable and Connector
Specification" defines the disconnect voltage thresholds of various
configurations. This change fixes the disconnect threshold voltage
calculation based on vSinkPD_min and vSinkDisconnectPD as defined
by the table.

Fixes: e1a97bf80a ("usb: typec: tcpci: Implement Auto discharge disconnect callbacks")
Cc: stable <stable@vger.kernel.org>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Link: https://lore.kernel.org/r/20210615174323.1160132-1-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Minas Harutyunyan
f077ba7a10 usb: dwc3: Fix debugfs creation flow
commit 84524d1232 upstream.

Creation EP's debugfs called earlier than debugfs folder for dwc3
device created. As result EP's debugfs are created in '/sys/kernel/debug'
instead of '/sys/kernel/debug/usb/dwc3.1.auto'.

Moved dwc3_debugfs_init() function call before calling
dwc3_core_init_mode() to allow create dwc3 debugfs parent before
creating EP's debugfs's.

Fixes: 8d396bb0a5 ("usb: dwc3: debugfs: Add and remove endpoint dirs dynamically")
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Jack Pham <jackp@codeaurora.org>
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/01fafb5b2d8335e98e6eadbac61fc796bdf3ec1a.1623948457.git.Minas.Harutyunyan@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Hannu Hartikainen
4df012c3c8 USB: cdc-acm: blacklist Heimann USB Appset device
commit 4897807753 upstream.

The device (32a7:0000 Heimann Sensor GmbH USB appset demo) claims to be
a CDC-ACM device in its descriptors but in fact is not. If it is run
with echo disabled it returns garbled data, probably due to something
that happens in the TTY layer. And when run with echo enabled (the
default), it will mess up the calibration data of the sensor the first
time any data is sent to the device.

In short, I had a bad time after connecting the sensor and trying to get
it to work. I hope blacklisting it in the cdc-acm driver will save
someone else a bit of trouble.

Signed-off-by: Hannu Hartikainen <hannu@hrtk.in>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210622141454.337948-1-hannu@hrtk.in
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Moritz Fischer
ed76fed817 usb: renesas-xhci: Fix handling of unknown ROM state
commit d143825baf upstream.

The ROM load sometimes seems to return an unknown status
(RENESAS_ROM_STATUS_NO_RESULT) instead of success / fail.

If the ROM load indeed failed this leads to failures when trying to
communicate with the controller later on.

Attempt to load firmware using RAM load in those cases.

Fixes: 2478be82de ("usb: renesas-xhci: Add ROM loader for uPD720201")
Cc: stable@vger.kernel.org
Cc: Mathias Nyman <mathias.nyman@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Vinod Koul <vkoul@kernel.org>
Tested-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Moritz Fischer <mdf@kernel.org>
Link: https://lore.kernel.org/r/20210615153758.253572-1-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Linyu Yuan
a55093941e usb: gadget: eem: fix echo command packet response issue
commit 4249d6fbc1 upstream.

when receive eem echo command, it will send a response,
but queue this response to the usb request which allocate
from gadget device endpoint zero,
and transmit the request to IN endpoint of eem interface.

on dwc3 gadget, it will trigger following warning in function
__dwc3_gadget_ep_queue(),

	if (WARN(req->dep != dep, "request %pK belongs to '%s'\n",
				&req->request, req->dep->name))
		return -EINVAL;

fix it by allocating a usb request from IN endpoint of eem interface,
and transmit the usb request to same IN endpoint of eem interface.

Signed-off-by: Linyu Yuan <linyyuan@codeaurora.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210616115142.34075-1-linyyuan@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:05 +02:00
Pavel Skripkin
15e94ea49b net: can: ems_usb: fix use-after-free in ems_usb_disconnect()
commit ab4a0b8fcb upstream.

In ems_usb_disconnect() dev pointer, which is netdev private data, is
used after free_candev() call:
| 	if (dev) {
| 		unregister_netdev(dev->netdev);
| 		free_candev(dev->netdev);
|
| 		unlink_all_urbs(dev);
|
| 		usb_free_urb(dev->intr_urb);
|
| 		kfree(dev->intr_in_buffer);
| 		kfree(dev->tx_msg_buffer);
| 	}

Fix it by simply moving free_candev() at the end of the block.

Fail log:
| BUG: KASAN: use-after-free in ems_usb_disconnect
| Read of size 8 at addr ffff88804e041008 by task kworker/1:2/2895
|
| CPU: 1 PID: 2895 Comm: kworker/1:2 Not tainted 5.13.0-rc5+ #164
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a-rebuilt.opensuse.4
| Workqueue: usb_hub_wq hub_event
| Call Trace:
|     dump_stack (lib/dump_stack.c:122)
|     print_address_description.constprop.0.cold (mm/kasan/report.c:234)
|     kasan_report.cold (mm/kasan/report.c:420 mm/kasan/report.c:436)
|     ems_usb_disconnect (drivers/net/can/usb/ems_usb.c:683 drivers/net/can/usb/ems_usb.c:1058)

Fixes: 702171adee ("ems_usb: Added support for EMS CPC-USB/ARM7 CAN/USB interface")
Link: https://lore.kernel.org/r/20210617185130.5834-1-paskripkin@gmail.com
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:04 +02:00
Johan Hovold
7763d4aaeb Input: usbtouchscreen - fix control-request directions
commit 41e81022a0 upstream.

The direction of the pipe argument must match the request-type direction
bit or control requests may fail depending on the host-controller-driver
implementation.

Fix the four control requests which erroneously used usb_rcvctrlpipe().

Fixes: 1d3e20236d ("[PATCH] USB: usbtouchscreen: unified USB touchscreen driver")
Fixes: 24ced062a2 ("usbtouchscreen: add support for DMC TSC-10/25 devices")
Fixes: 9e3b25837a ("Input: usbtouchscreen - add support for e2i touchscreen controller")
Signed-off-by: Johan Hovold <johan@kernel.org>
Cc: stable@vger.kernel.org      # 2.6.17
Link: https://lore.kernel.org/r/20210524092048.4443-1-johan@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:04 +02:00
Pavel Skripkin
82d7e9597e media: dvb-usb: fix wrong definition
commit c680ed46e4 upstream.

syzbot reported WARNING in vmalloc. The problem
was in zero size passed to vmalloc.

The root case was in wrong cxusb_bluebird_lgz201_properties
definition. adapter array has only 1 entry, but num_adapters was
2.

Call Trace:
 __vmalloc_node mm/vmalloc.c:2963 [inline]
 vmalloc+0x67/0x80 mm/vmalloc.c:2996
 dvb_dmx_init+0xe4/0xb90 drivers/media/dvb-core/dvb_demux.c:1251
 dvb_usb_adapter_dvb_init+0x564/0x860 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:184
 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:86 [inline]
 dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:184 [inline]
 dvb_usb_device_init.cold+0xc94/0x146e drivers/media/usb/dvb-usb/dvb-usb-init.c:308
 cxusb_probe+0x159/0x5e0 drivers/media/usb/dvb-usb/cxusb.c:1634

Fixes: 4d43e13f72 ("V4L/DVB (4643): Multi-input patch for DVB-USB device")
Cc: stable@vger.kernel.org
Reported-by: syzbot+7336195c02c1bd2f64e1@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:04 +02:00
Frank Schäfer
efad996fc1 ALSA: hda/realtek: fix mute led of the HP Pavilion 15-eh1xxx series
commit 42334fbc21 upstream.

The HP Pavilion 15-eh1xxx series uses the HP mainboard 88D0 with ALC287 and needs
the ALC287_FIXUP_HP_GPIO_LED quirk to make the mute led working.
Tested with a HP Pavilion 15-eh1557ng.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210703135416.13151-1-fschaefer.oss@googlemail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:04 +02:00
Jeremy Szu
1ccc1686b3 ALSA: hda/realtek: fix mute/micmute LEDs for HP EliteBook 830 G8 Notebook PC
commit dfc2e8ae40 upstream.

The HP EliteBook 830 G8 Notebook PC using ALC285 codec which using 0x04 to
control mute LED and 0x01 to control micmute LED.
Therefore, add a quirk to make it works.

Signed-off-by: Jeremy Szu <jeremy.szu@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210625133414.26760-1-jeremy.szu@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:04 +02:00
Takashi Iwai
e4ca3c1dc3 ALSA: hda/realtek: Apply LED fixup for HP Dragonfly G1, too
commit 0ac05b25c3 upstream.

HP Dragonfly G1 (SSID 103c:861f) also requires the same quirk for the
mute and mic-mute LED just as Dragonfly G2 model.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=213329
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210623122022.26179-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:04 +02:00
Takashi Iwai
29e622eb3d ALSA: hda/realtek: Fix bass speaker DAC mapping for Asus UM431D
commit f8fbcdfb06 upstream.

Asus Zenbook 14 UM431D has two speaker pins and a headphone pin, and
the auto-parser ends up assigning the bass to the third DAC 0x06.
Although the tone comes out, it's inconvenient because this DAC has no
volume control unlike two other DACs.

For obtaining the volume control for the bass speaker, this patch
enforces the mapping to let both front and bass speaker pins sharing
the same DAC.  It's not ideal but a little bit of improvement.

Since we've already applied the same workaround for another ASUS
machine, we just need to hook the chain to the existing quirk.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212547
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210620065952.18948-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:04 +02:00
Elia Devito
85aa18d63a ALSA: hda/realtek: Improve fixup for HP Spectre x360 15-df0xxx
commit 434591b2a7 upstream.

On HP Spectre x360 15-df0xxx, after system boot with plugged headset, the
headset mic are not detected.
Moving pincfg and DAC's config to single fixup function fix this.

[ The actual bug in the original code was that it used a chain to
  ALC286_FIXUP_SPEAKER2_TO_DAC1, and it contains not only the DAC1
  route fix but also another chain to ALC269_FIXUP_THINKPAD_ACPI.
  I thought the latter one is harmless for non-Thinkpad, but it
  doesn't seem so; it contains again yet another chain to
  ALC269_FIXUP_SKI_IGNORE, and this might be bad for some machines,
  including this HP machine.  -- tiwai ]

Signed-off-by: Elia Devito <eliadevito@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210619204105.5682-1-eliadevito@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:03 +02:00
Jeremy Szu
5f33519ffa ALSA: hda/realtek: fix mute/micmute LEDs for HP EliteBook x360 830 G8
commit c3d2c88209 upstream.

The HP EliteBook x360 830 G8 using ALC285 codec which using 0x04 to
control mute LED and 0x01 to control micmute LED.
Therefore, add a quirk to make it works.

Signed-off-by: Jeremy Szu <jeremy.szu@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210617171422.16652-1-jeremy.szu@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:03 +02:00
Takashi Iwai
496df16507 ALSA: hda/realtek: Add another ALC236 variant support
commit 1948fc065a upstream.

The codec chip 10ec:0230 is another variant of ALC236, combined with a
card reader.  Apply the equivalent setup as 10ec:0236.

BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1184869
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210618161720.28694-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:03 +02:00
Andy Chi
6e4b638ba2 ALSA: hda/realtek: fix mute/micmute LEDs for HP ProBook 630 G8
commit fb3acdb2ba upstream.

The HP ProBook 630 G8 using ALC236 codec which using 0x02 to
control mute LED and 0x01 to control micmute LED.
Therefore, add a quirk to make it works.

Signed-off-by: Andy Chi <andy.chi@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210701091417.9696-3-andy.chi@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:03 +02:00
Andy Chi
be688c0763 ALSA: hda/realtek: fix mute/micmute LEDs for HP ProBook 445 G8
commit a3b7f9b8fa upstream.

The HP ProBook 445 G8 using ALC236 codec.
COEF index 0x34 bit 5 is used to control the playback mute LED, but the
microphone mute LED is controlled using pin VREF instead of a COEF index.
Therefore, add a quirk to make it works.

Signed-off-by: Andy Chi <andy.chi@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210701091417.9696-2-andy.chi@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:03 +02:00
Andy Chi
2b7c96d5d7 ALSA: hda/realtek: fix mute/micmute LEDs for HP ProBook 450 G8
commit 2b70b264d3 upstream.

The HP ProBook 450 G8 using ALC236 codec which using 0x02 to
control mute LED and 0x01 to control micmute LED.
Therefore, add a quirk to make it works.

Signed-off-by: Andy Chi <andy.chi@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210701091417.9696-1-andy.chi@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:03 +02:00
Takashi Iwai
61d14781e5 ALSA: intel8x0: Fix breakage at ac97 clock measurement
commit 24d1e49415 upstream.

The recent workaround for the wild interrupts in commit c1f0616124
("ALSA: intel8x0: Don't update period unless prepared") leaded to a
regression, causing the interrupt storm during ac97 clock measurement
at the driver probe.  We need to handle the interrupt while the clock
measurement as well as the proper PCM streams.

Fixes: c1f0616124 ("ALSA: intel8x0: Don't update period unless prepared")
Reported-and-tested-by: Max Filippov <jcmvbkbc@gmail.com>
Tested-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/CAMo8BfKKMQkcsbOQaeEjq_FsJhdK=fn598dvh7YOcZshUSOH=g@mail.gmail.com
Link: https://lore.kernel.org/r/20210708090738.1569-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:03 +02:00
Takashi Iwai
d36a88504d ALSA: usb-audio: scarlett2: Fix wrong resume call
commit 785b6f29a7 upstream.

The current way of the scarlett2 mixer code managing the
usb_mixer_elem_info object is wrong in two ways: it passes its
internal index to the head.id field, and the val_type field is
uninitialized.  This ended up with the wrong execution at the resume
because a bogus unit id is passed wrongly.  Also, in the later code
extensions, we'll have more mixer elements, and passing the index will
overflow the unit id size (of 256).

This patch corrects those issues.  It introduces a new value type,
USB_MIXER_BESPOKEN, which indicates a non-standard mixer element, and
use this type for all scarlett2 mixer elements, as well as
initializing the fixed unit id 0 for avoiding the overflow.

Tested-by: Geoffrey D. Bennett <g@b4.vu>
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/49721219f45b7e175e729b0d9d9c142fd8f4342a.1624379707.git.g@b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:02 +02:00
Takashi Sakamoto
493cce3d1f ALSA: firewire-motu: fix stream format for MOTU 8pre FireWire
commit fc36ef80ca upstream.

My previous refactoring for ALSA firewire-motu driver brought regression
to handle MOTU 8pre FireWire. The packet format is not operated correctly.

Cc: <stable@vger.kernel.org>
Fixes: dfbaa4dc11 ("ALSA: firewire-motu: add model-specific table of chunk count")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210614083133.39753-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:02 +02:00
Takashi Iwai
61f57e6867 ALSA: usb-audio: Fix OOB access at proc output
commit 362372ceb6 upstream.

At extending the available mixer values for 32bit types, we forgot to
add the corresponding entries for the format dump in the proc output.
This may result in OOB access.  Here adds the missing entries.

Fixes: bc18e31c30 ("ALSA: usb-audio: Fix parameter block size for UAC2 control requests")
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210622090647.14021-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:02 +02:00
Daehwan Jung
f446bfac9d ALSA: usb-audio: fix rate on Ozone Z90 USB headset
commit aecc19ec40 upstream.

It mislabels its 96 kHz altsetting and that's why it causes some noise

Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/1623836097-61918-1-git-send-email-dh10.jung@samsung.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:02 +02:00
Takashi Sakamoto
4448de6006 ALSA: bebob: fix rx packet format for Yamaha GO44/GO46, Terratec Phase 24/x24
commit 6b6c17fe6f upstream.

Below devices reports zero as the number of channels for external output
plug with MIDI type:

 * Yamaha GO44/GO46
 * Terratec Phase 24/X24

As a result, rx packet format is invalid and they generate silent sound.
This is a regression added in v5.13.

This commit fixes the bug, addressed at a commit 1bd1b3be86 ("ALSA:
bebob: perform sequence replay for media clock recovery").

Cc: <stable@vger.kernel.org>
Fixes: 5c6ea94f2b ("ALSA: bebob: detect the number of available MIDI ports")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210618040447.113306-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:02 +02:00
Szymon Janc
146017a717 Bluetooth: Remove spurious error message
commit 1c58e933ab upstream.

Even with rate limited reporting this is very spammy and since
it is remote device that is providing bogus data there is no
need to report this as error.

Since real_len variable was used only to allow conditional error
message it is now also removed.

[72454.143336] bt_err_ratelimited: 10 callbacks suppressed
[72454.143337] Bluetooth: hci0: advertising data len corrected
[72454.296314] Bluetooth: hci0: advertising data len corrected
[72454.892329] Bluetooth: hci0: advertising data len corrected
[72455.051319] Bluetooth: hci0: advertising data len corrected
[72455.357326] Bluetooth: hci0: advertising data len corrected
[72455.663295] Bluetooth: hci0: advertising data len corrected
[72455.787278] Bluetooth: hci0: advertising data len corrected
[72455.942278] Bluetooth: hci0: advertising data len corrected
[72456.094276] Bluetooth: hci0: advertising data len corrected
[72456.249137] Bluetooth: hci0: advertising data len corrected
[72459.416333] bt_err_ratelimited: 13 callbacks suppressed
[72459.416334] Bluetooth: hci0: advertising data len corrected
[72459.721334] Bluetooth: hci0: advertising data len corrected
[72460.011317] Bluetooth: hci0: advertising data len corrected
[72460.327171] Bluetooth: hci0: advertising data len corrected
[72460.638294] Bluetooth: hci0: advertising data len corrected
[72460.946350] Bluetooth: hci0: advertising data len corrected
[72461.225320] Bluetooth: hci0: advertising data len corrected
[72461.690322] Bluetooth: hci0: advertising data len corrected
[72462.118318] Bluetooth: hci0: advertising data len corrected
[72462.427319] Bluetooth: hci0: advertising data len corrected
[72464.546319] bt_err_ratelimited: 7 callbacks suppressed
[72464.546319] Bluetooth: hci0: advertising data len corrected
[72464.857318] Bluetooth: hci0: advertising data len corrected
[72465.163332] Bluetooth: hci0: advertising data len corrected
[72465.278331] Bluetooth: hci0: advertising data len corrected
[72465.432323] Bluetooth: hci0: advertising data len corrected
[72465.891334] Bluetooth: hci0: advertising data len corrected
[72466.045334] Bluetooth: hci0: advertising data len corrected
[72466.197321] Bluetooth: hci0: advertising data len corrected
[72466.340318] Bluetooth: hci0: advertising data len corrected
[72466.498335] Bluetooth: hci0: advertising data len corrected
[72469.803299] bt_err_ratelimited: 10 callbacks suppressed

Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=203753
Cc: stable@vger.kernel.org
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:02 +02:00
Connor Abbott
ab4e95250d Bluetooth: btqca: Don't modify firmware contents in-place
commit b43ca51117 upstream.

struct firmware::data is marked const, and when the firmware is
compressed with xz (default at least with Fedora) it's mapped read-only
which results in a crash:

BUG: unable to handle page fault for address: ffffae57c0ca5047
PGD 100000067 P4D 100000067 PUD 1001ce067 PMD 10165a067 PTE 8000000112bba161
Oops: 0003 [#1] SMP NOPTI
CPU: 3 PID: 204 Comm: kworker/u17:0 Not tainted 5.12.1-test+ #1
Hardware name: Dell Inc. XPS 13 9310/0F7M4C, BIOS 1.2.5 12/10/2020
Workqueue: hci0 hci_power_on [bluetooth]
RIP: 0010:qca_download_firmware+0x27c/0x4e0 [btqca]
Code: 1b 75 04 80 48 0c 01 0f b7 c6 8d 54 02 0c 41 39 d7 0f 8e 62 fe ff ff 48 63 c2 4c 01 e8 0f b7 38 0f b7 70 02 66 83 ff 11 75 d3 <80> 48 0c 80 41 83 fc 03 7e 6e 88 58 0d eb ce 41 0f b6 45 0e 48 8b
RSP: 0018:ffffae57c08dfc68 EFLAGS: 00010246
RAX: ffffae57c0ca503b RBX: 000000000000000e RCX: 0000000000000000
RDX: 0000000000000037 RSI: 0000000000000006 RDI: 0000000000000011
RBP: ffff978d9949e000 R08: ffff978d84ed7540 R09: ffffae57c0ca5000
R10: 000000000010cd00 R11: 0000000000000001 R12: 0000000000000005
R13: ffffae57c0ca5004 R14: ffff978d98ca8680 R15: 00000000000016a9
FS:  0000000000000000(0000) GS:ffff9794ef6c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffae57c0ca5047 CR3: 0000000113d5a004 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
 qca_uart_setup+0x2cb/0x1390 [btqca]
 ? qca_read_soc_version+0x136/0x220 [btqca]
 qca_setup+0x288/0xab0 [hci_uart]
 hci_dev_do_open+0x1f3/0x780 [bluetooth]
 ? try_to_wake_up+0x1c1/0x4f0
 hci_power_on+0x3f/0x200 [bluetooth]
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x1f/0x30
Modules linked in: llc ip_set nf_tables nfnetlink snd_soc_skl_hda_dsp(+) ip6table_filter snd_soc_hdac_hdmi ip6_tables qrtr_mhi iptable_filter snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic s>
 dell_wmi_sysman(+) dell_smbios snd dcdbas mhi vfat videobuf2_vmalloc i2c_i801 videobuf2_memops videobuf2_v4l2 dell_wmi_descriptor fat wmi_bmof soundcore i2c_smbus videobuf2_common libarc4 mei_me mei hid_se>
 i2c_hid_acpi i2c_hid video pinctrl_tigerlake fuse
CR2: ffffae57c0ca5047

This also seems to fix a failure to suspend due to the firmware
download on bootup getting interrupted by the crash:

Bluetooth: hci0: SSR or FW download time out
PM: dpm_run_callback(): acpi_subsys_suspend+0x0/0x60 returns -110
PM: Device serial0-0 failed to suspend: error -110
PM: Some devices failed to suspend, or early wake event detected

Fixes: 83e8196 ("Bluetooth: btqca: Introduce generic QCA ROME support")
Cc: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org>
Cc: stable@vger.kernel.org
Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:02 +02:00
Pavel Skripkin
13dbf9944e Bluetooth: hci_qca: fix potential GPF
commit 59f90f1351 upstream.

In qca_power_shutdown() qcadev local variable is
initialized by hu->serdev.dev private data, but
hu->serdev can be NULL and there is a check for it.

Since, qcadev is not used before

	if (!hu->serdev)
		return;

we can move its initialization after this "if" to
prevent GPF.

Fixes: 5559904ccc ("Bluetooth: hci_qca: Add QCA Rome power off support to the qca_power_shutdown()")
Cc: stable@vger.kernel.org # v5.6+
Cc: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-14 17:06:01 +02:00
Sasha Levin
aaa1f5834d Linux 5.13.1 v5.13.1
Tested-by: Fox Chen <foxhlchen@gmail.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-07 08:24:58 -04:00
Mel Gorman
7f6cbd0b3e mm/page_alloc: correct return value of populated elements if bulk array is populated
commit ff4b2b4014 upstream.

Dave Jones reported the following

	This made it into 5.13 final, and completely breaks NFSD for me
	(Serving tcp v3 mounts).  Existing mounts on clients hang, as do
	new mounts from new clients.  Rebooting the server back to rc7
	everything recovers.

The commit b3b64ebd38 ("mm/page_alloc: do bulk array bounds check after
checking populated elements") returns the wrong value if the array is
already populated which is interpreted as an allocation failure.  Dave
reported this fixes his problem and it also passed a test running dbench
over NFS.

Link: https://lkml.kernel.org/r/20210628150219.GC3840@techsingularity.net
Fixes: b3b64ebd38 ("mm/page_alloc: do bulk array bounds check after checking populated elements")
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Dave Jones <davej@codemonkey.org.uk>
Tested-by: Dave Jones <davej@codemonkey.org.uk>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org> [5.13+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-07 08:22:32 -04:00
Sean Christopherson
5863699d23 Revert "KVM: x86/mmu: Drop kvm_mmu_extended_role.cr4_la57 hack"
commit f71a53d118 upstream.

Restore CR4.LA57 to the mmu_role to fix an amusing edge case with nested
virtualization.  When KVM (L0) is using TDP, CR4.LA57 is not reflected in
mmu_role.base.level because that tracks the shadow root level, i.e. TDP
level.  Normally, this is not an issue because LA57 can't be toggled
while long mode is active, i.e. the guest has to first disable paging,
then toggle LA57, then re-enable paging, thus ensuring an MMU
reinitialization.

But if L1 is crafty, it can load a new CR4 on VM-Exit and toggle LA57
without having to bounce through an unpaged section.  L1 can also load a
new CR3 on exit, i.e. it doesn't even need to play crazy paging games, a
single entry PML5 is sufficient.  Such shenanigans are only problematic
if L0 and L1 use TDP, otherwise L1 and L2 share an MMU that gets
reinitialized on nested VM-Enter/VM-Exit due to mmu_role.base.guest_mode.

Note, in the L2 case with nested TDP, even though L1 can switch between
L2s with different LA57 settings, thus bypassing the paging requirement,
in that case KVM's nested_mmu will track LA57 in base.level.

This reverts commit 8053f924ca.

Fixes: 8053f924ca ("KVM: x86/mmu: Drop kvm_mmu_extended_role.cr4_la57 hack")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622175739.3610207-6-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-07 08:22:32 -04:00
Linus Torvalds
62fb9874f5 Linux 5.13 v5.13 2021-06-27 15:21:11 -07:00
Linus Torvalds
b4b27b9eed Revert "signal: Allow tasks to cache one sigqueue struct"
This reverts commits 4bad58ebc8 (and
399f8dd9a8, which tried to fix it).

I do not believe these are correct, and I'm about to release 5.13, so am
reverting them out of an abundance of caution.

The locking is odd, and appears broken.

On the allocation side (in __sigqueue_alloc()), the locking is somewhat
straightforward: it depends on sighand->siglock.  Since one caller
doesn't hold that lock, it further then tests 'sigqueue_flags' to avoid
the case with no locks held.

On the freeing side (in sigqueue_cache_or_free()), there is no locking
at all, and the logic instead depends on 'current' being a single
thread, and not able to race with itself.

To make things more exciting, there's also the data race between freeing
a signal and allocating one, which is handled by using WRITE_ONCE() and
READ_ONCE(), and being mutually exclusive wrt the initial state (ie
freeing will only free if the old state was NULL, while allocating will
obviously only use the value if it was non-NULL, so only one or the
other will actually act on the value).

However, while the free->alloc paths do seem mutually exclusive thanks
to just the data value dependency, it's not clear what the memory
ordering constraints are on it.  Could writes from the previous
allocation possibly be delayed and seen by the new allocation later,
causing logical inconsistencies?

So it's all very exciting and unusual.

And in particular, it seems that the freeing side is incorrect in
depending on "current" being single-threaded.  Yes, 'current' is a
single thread, but in the presense of asynchronous events even a single
thread can have data races.

And such asynchronous events can and do happen, with interrupts causing
signals to be flushed and thus free'd (for example - sending a
SIGCONT/SIGSTOP can happen from interrupt context, and can flush
previously queued process control signals).

So regardless of all the other questions about the memory ordering and
locking for this new cached allocation, the sigqueue_cache_or_free()
assumptions seem to be fundamentally incorrect.

It may be that people will show me the errors of my ways, and tell me
why this is all safe after all.  We can reinstate it if so.  But my
current belief is that the WRITE_ONCE() that sets the cached entry needs
to be a smp_store_release(), and the READ_ONCE() that finds a cached
entry needs to be a smp_load_acquire() to handle memory ordering
correctly.

And the sequence in sigqueue_cache_or_free() would need to either use a
lock or at least be interrupt-safe some way (perhaps by using something
like the percpu 'cmpxchg': it doesn't need to be SMP-safe, but like the
percpu operations it needs to be interrupt-safe).

Fixes: 399f8dd9a8 ("signal: Prevent sigqueue caching after task got released")
Fixes: 4bad58ebc8 ("signal: Allow tasks to cache one sigqueue struct")
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-06-27 13:32:54 -07:00
Linus Torvalds
625acffd7a - Fix couple of late pt_regs flags handling findings of conversion to
generic entry.
 
 - Fix potential register clobbering in stack switch helper.
 
 - Fix thread/group masks for offline cpus.
 
 - Fix cleanup of mdev resources when remove callback is invoked in vfio-ap
   code.
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Merge tag 's390-5.13-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:

 - Fix a couple of late pt_regs flags handling findings of conversion to
   generic entry.

 - Fix potential register clobbering in stack switch helper.

 - Fix thread/group masks for offline cpus.

 - Fix cleanup of mdev resources when remove callback is invoked in
   vfio-ap code.

* tag 's390-5.13-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/stack: fix possible register corruption with stack switch helper
  s390/topology: clear thread/group maps for offline cpus
  s390/vfio-ap: clean up mdev resources when remove callback invoked
  s390: clear pt_regs::flags on irq entry
  s390: fix system call restart with multiple signals
2021-06-26 09:50:10 -07:00
Linus Torvalds
b7050b2424 Two fixes in the last minute:
- Put an fwnode in the errorpath in the SGPIO driver
 
 - Fix the number of GPIO lines per bank in the STM32 driver
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Merge tag 'pinctrl-v5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Two last-minute fixes:

   - Put an fwnode in the errorpath in the SGPIO driver

   - Fix the number of GPIO lines per bank in the STM32 driver"

* tag 'pinctrl-v5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: stm32: fix the reported number of GPIO lines per bank
  pinctrl: microchip-sgpio: Put fwnode in error case during ->probe()
2021-06-25 19:06:24 -07:00
Linus Torvalds
e2f527b58e SCSI fixes on 20210625
Two small fixes, both in upper layer drivers (scsi disk and cdrom).
 The sd one is fixing a commit changing revalidation that came from the
 block tree a while ago (5.10) and the sr one adds handling of a
 condition we didn't previously handle for manually removed media.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two small fixes, both in upper layer drivers (scsi disk and cdrom).

  The sd one is fixing a commit changing revalidation that came from the
  block tree a while ago (5.10) and the sr one adds handling of a
  condition we didn't previously handle for manually removed media"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: sd: Call sd_revalidate_disk() for ioctl(BLKRRPART)
  scsi: sr: Return appropriate error code when disk is ejected
2021-06-25 15:59:14 -07:00