linux.git/drivers, branch v6.1.98

null_blk: Do not allow runt zone with zone capacity smaller then zone size

2024-07-11T10:47:18+00:00

[ Upstream commit b164316808ec5de391c3e7b0148ec937d32d280d ]

A zoned device with a smaller last zone together with a zone capacity
smaller than the zone size does make any sense as that does not
correspond to any possible setup for a real device:
1) For ZNS and zoned UFS devices, all zones are always the same size.
2) For SMR HDDs, all zones always have the same capacity.
In other words, if we have a smaller last runt zone, then this zone
capacity should always be equal to the zone size.

Add a check in null_init_zoned_dev() to prevent a configuration to have
both a smaller zone size and a zone capacity smaller than the zone size.

Signed-off-by: Damien Le Moal 
Reviewed-by: Niklas Cassel 
Reviewed-by: Bart Van Assche 
Link: https://lore.kernel.org/r/20240530054035.491497-2-dlemoal@kernel.org
Signed-off-by: Jens Axboe 
Signed-off-by: Sasha Levin

spi: cadence: Ensure data lines set to low during dummy-cycle period

2024-07-11T10:47:18+00:00

[ Upstream commit 4a69c1264ff41bc5bf7c03101ada0454fbf08868 ]

During dummy-cycles xSPI will switch GPIO into Hi-Z mode. In that dummy
period voltage on data lines will slowly drop, what can cause
unintentional modebyte transmission. Value send to SPI memory chip will
depend on last address, and clock frequency.
To prevent unforeseen consequences of that behaviour, force send
single modebyte(0x00).
Modebyte will be send only if number of dummy-cycles is not equal
to 0. Code must also reduce dummycycle byte count by one - as one byte
is send as modebyte.

Signed-off-by: Witold Sadowski 
Link: https://msgid.link/r/20240529074037.1345882-2-wsadowski@marvell.com
Signed-off-by: Mark Brown 
Signed-off-by: Sasha Levin

nfc/nci: Add the inconsistency check between the input data length and count

2024-07-11T10:47:18+00:00

[ Upstream commit 068648aab72c9ba7b0597354ef4d81ffaac7b979 ]

write$nci(r0, &(0x7f0000000740)=ANY=[@ANYBLOB="610501"], 0xf)

Syzbot constructed a write() call with a data length of 3 bytes but a count value
of 15, which passed too little data to meet the basic requirements of the function
nci_rf_intf_activated_ntf_packet().

Therefore, increasing the comparison between data length and count value to avoid
problems caused by inconsistent data length and count.

Reported-and-tested-by: syzbot+71bfed2b2bcea46c98f2@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

nvmet: fix a possible leak when destroy a ctrl during qp establishment

2024-07-11T10:47:18+00:00

[ Upstream commit c758b77d4a0a0ed3a1292b3fd7a2aeccd1a169a4 ]

In nvmet_sq_destroy we capture sq->ctrl early and if it is non-NULL we
know that a ctrl was allocated (in the admin connect request handler)
and we need to release pending AERs, clear ctrl->sqs and sq->ctrl
(for nvme-loop primarily), and drop the final reference on the ctrl.

However, a small window is possible where nvmet_sq_destroy starts (as
a result of the client giving up and disconnecting) concurrently with
the nvme admin connect cmd (which may be in an early stage). But *before*
kill_and_confirm of sq->ref (i.e. the admin connect managed to get an sq
live reference). In this case, sq->ctrl was allocated however after it was
captured in a local variable in nvmet_sq_destroy.
This prevented the final reference drop on the ctrl.

Solve this by re-capturing the sq->ctrl after all inflight request has
completed, where for sure sq->ctrl reference is final, and move forward
based on that.

This issue was observed in an environment with many hosts connecting
multiple ctrls simoutanuosly, creating a delay in allocating a ctrl
leading up to this race window.

Reported-by: Alex Turin 
Signed-off-by: Sagi Grimberg 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Keith Busch 
Signed-off-by: Sasha Levin

platform/x86: touchscreen_dmi: Add info for the EZpad 6s Pro

2024-07-11T10:47:18+00:00

[ Upstream commit 3050052613790e75b5e4a8536930426b0a8b0774 ]

The "EZpad 6s Pro" uses the same touchscreen as the "EZpad 6 Pro B",
unlike the "Ezpad 6 Pro" which has its own touchscreen.

Signed-off-by: hmtheboy154 
Reviewed-by: Hans de Goede 
Signed-off-by: Hans de Goede 
Link: https://lore.kernel.org/r/20240527091447.248849-3-hdegoede@redhat.com
Signed-off-by: Sasha Levin

platform/x86: touchscreen_dmi: Add info for GlobalSpace SolT IVW 11.6" tablet

2024-07-11T10:47:18+00:00

[ Upstream commit 7c8639aa41343fd7b3dbe09baf6b0791fcc407a1 ]

This is a tablet created by GlobalSpace Technologies Limited
which uses an Intel Atom x5-Z8300, 4GB of RAM & 64GB of storage.

Link: https://web.archive.org/web/20171102141952/http://globalspace.in/11.6-device.html
Signed-off-by: hmtheboy154 
Reviewed-by: Hans de Goede 
Signed-off-by: Hans de Goede 
Link: https://lore.kernel.org/r/20240527091447.248849-2-hdegoede@redhat.com
Signed-off-by: Sasha Levin

regmap-i2c: Subtract reg size from max_write

2024-07-11T10:47:17+00:00

[ Upstream commit 611b7eb19d0a305d4de00280e4a71a1b15c507fc ]

Currently, when an adapter defines a max_write_len quirk,
the data will be chunked into data sizes equal to the
max_write_len quirk value.  But the payload will be increased by
the size of the register address before transmission.  The
resulting value always ends up larger than the limit set
by the quirk.

Avoid this error by setting regmap's max_write to the quirk's
max_write_len minus the number of bytes for the register and
padding.  This allows the chunking to work correctly for this
limited case without impacting other use-cases.

Signed-off-by: Jim Wylder 
Link: https://msgid.link/r/20240523211437.2839942-1-jwylder@google.com
Signed-off-by: Mark Brown 
Signed-off-by: Sasha Levin

nvme: adjust multiples of NVME_CTRL_PAGE_SIZE in offset

2024-07-11T10:47:17+00:00

[ Upstream commit 1bd293fcf3af84674e82ed022c049491f3768840 ]

bio_vec start offset may be relatively large particularly when large
folio gets added to the bio. A bigger offset will result in avoiding the
single-segment mapping optimization and end up using expensive
mempool_alloc further.

Rather than using absolute value, adjust bv_offset by
NVME_CTRL_PAGE_SIZE while checking if segment can be fitted into one/two
PRP entries.

Suggested-by: Christoph Hellwig 
Signed-off-by: Kundan Kumar 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Keith Busch 
Signed-off-by: Sasha Levin

nvme-multipath: find NUMA path only for online numa-node

2024-07-11T10:47:17+00:00

[ Upstream commit d3a043733f25d743f3aa617c7f82dbcb5ee2211a ]

In current native multipath design when a shared namespace is created,
we loop through each possible numa-node, calculate the NUMA distance of
that node from each nvme controller and then cache the optimal IO path
for future reference while sending IO. The issue with this design is that
we may refer to the NUMA distance table for an offline node which may not
be populated at the time and so we may inadvertently end up finding and
caching a non-optimal path for IO. Then latter when the corresponding
numa-node becomes online and hence the NUMA distance table entry for that
node is created, ideally we should re-calculate the multipath node distance
for the newly added node however that doesn't happen unless we rescan/reset
the controller. So essentially, we may keep using non-optimal IO path for a
node which is made online after namespace is created.
This patch helps fix this issue ensuring that when a shared namespace is
created, we calculate the multipath node distance for each online numa-node
instead of each possible numa-node. Then latter when a node becomes online
and we receive any IO on that newly added node, we would calculate the
multipath node distance for newly added node but this time NUMA distance
table would have been already populated for newly added node. Hence we
would be able to correctly calculate the multipath node distance and choose
the optimal path for the IO.

Signed-off-by: Nilay Shroff 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Keith Busch 
Signed-off-by: Sasha Levin

i2c: pnx: Fix potential deadlock warning from del_timer_sync() call in isr

2024-07-11T10:47:17+00:00

[ Upstream commit f63b94be6942ba82c55343e196bd09b53227618e ]

When del_timer_sync() is called in an interrupt context it throws a warning
because of potential deadlock. The timer is used only to exit from
wait_for_completion() after a timeout so replacing the call with
wait_for_completion_timeout() allows to remove the problematic timer and
its related functions altogether.

Fixes: 41561f28e76a ("i2c: New Philips PNX bus driver")
Signed-off-by: Piotr Wojtaszczyk 
Signed-off-by: Andi Shyti 
Signed-off-by: Sasha Levin