For smbdirect it required to use different ports depending
on the RDMA protocol. E.g. for iWarp 5445 is needed
(as tcp port 445 already used by the raw tcp transport for SMB),
while InfiniBand, RoCEv1 and RoCEv2 use port 445, as they
use an independent port range (even for RoCEv2, which uses udp
port 4791 itself).
Currently ksmbd is not able to function correctly at
all if the system has iWarp (RDMA_NODE_RNIC) interface(s)
and any InfiniBand, RoCEv1 and/or RoCEv2 interface(s)
at the same time.
Now we do a wildcard listen on port 5445 only
for iWarp devices and another wildcard listen
on port 445 of any InfiniBand, RoCEv1 and/or RoCEv2
devices.
The wildcard listeners also work if there is
no device of the requested node_type, this
is the same logic as we had before, but before
we had to decide between port 5445 or 445
and now both are possible at the same time.
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-rdma@vger.kernel.org
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
For smbdirect it required to use different ports depending
on the RDMA protocol. E.g. for iWarp 5445 is needed
(as tcp port 445 already used by the raw tcp transport for SMB),
while InfiniBand, RoCEv1 and RoCEv2 use port 445, as they
use an independent port range (even for RoCEv2, which uses udp
port 4791 itself).
And cifs.ko uses 5445 with a fallback to 445, which
means depending on the available interfaces, it tries
5445 in the RoCE range or may tries iWarp with 445
as a fallback. This leads to strange error messages
and strange network captures.
To avoid these problems they will be able to
use rdma_restrict_node_type(RDMA_NODE_RNIC) before
trying port 5445 and rdma_restrict_node_type(RDMA_NODE_IB_CA)
before trying port 445. It means we'll get early
-ENODEV early from rdma_resolve_addr() without any
network traffic and timeouts.
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-rdma@vger.kernel.org
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
For smbdirect it required to use different ports depending
on the RDMA protocol. E.g. for iWarp 5445 is needed
(as tcp port 445 already used by the raw tcp transport for SMB),
while InfiniBand, RoCEv1 and RoCEv2 use port 445, as they
use an independent port range (even for RoCEv2, which uses udp
port 4791 itself).
Currently ksmbd is not able to function correctly at
all if the system has iWarp (RDMA_NODE_RNIC) interface(s)
and any InfiniBand, RoCEv1 and/or RoCEv2 interface(s)
at the same time.
And cifs.ko uses 5445 with a fallback to 445, which
means depending on the available interfaces, it tries
5445 in the RoCE range or may tries iWarp with 445
as a fallback. This leads to strange error messages
and strange network captures.
To avoid these problems they will be able to
use rdma_restrict_node_type(RDMA_NODE_RNIC) before
trying port 5445 and rdma_restrict_node_type(RDMA_NODE_IB_CA)
before trying port 445. It means we'll get early
-ENODEV early from rdma_resolve_addr() without any
network traffic and timeouts.
This is designed to be called before calling any
of rdma_bind_addr(), rdma_resolve_addr() or rdma_listen().
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: linux-rdma@vger.kernel.org
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Acked-by: Leon Romanovsky <leon@kernel.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
With smbdirect_send_batch processing we likely have requests without
IB_SEND_SIGNALED, which will be destroyed in the final request
that has IB_SEND_SIGNALED set.
If the connection is broken all requests are signaled
even without explicit IB_SEND_SIGNALED.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The server has similar logic and it makes sure that
request->wr is used instead of a stack struct ib_send_wr send_wr.
This makes sure send_done can see request->wr.send_flags
as the next commit will check for IB_SEND_SIGNALED
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
When we are about to use the last send credit that was
granted to us by the peer, we need to wait until
we are ourself able to grant at least one credit
to the peer. Otherwise it might not be possible
for the peer to grant more credits.
The following sections in MS-SMBD are related to this:
3.1.5.1 Sending Upper Layer Messages
...
If Connection.SendCredits is 1 and the CreditsGranted field of the
message is 0, stop processing.
...
3.1.5.9 Managing Credits Prior to Sending
...
If Connection.ReceiveCredits is zero, or if Connection.SendCredits is
one and the Connection.SendQueue is not empty, the sender MUST allocate
and post at least one receive of size Connection.MaxReceiveSize and MUST
increment Connection.ReceiveCredits by the number allocated and posted.
If no receives are posted, the processing MUST return a value of zero to
indicate to the caller that no Send message can be currently performed.
...
This is a similar logic as we have in the server.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
It turns out that our code will corrupt the stream of
reassabled data transfer messages when we trigger an
immendiate (empty) send.
In order to fix this we'll have a single 'batch' credit per
connection. And code getting that credit is free to use
as much messages until remaining_length reaches 0, then
the batch credit it given back and the next logical send can
happen.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This will allow us to use similar logic as we have in
the server soon, so that we can share common code later.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This is basically a copy of smb_direct_{alloc,free}_sendmsg()
in the server, with just using ib_dma_unmap_page() in all
cases, which is the same as ib_dma_unmap_single().
We'll use this logic in common code in future.
(I basically backported it from my branch that
as already has everything in common).
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This is like smb_direct_post_send() in the server
and will simplify porting the smbdirect_send_batch
and credit related logic from the server.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This simplifies the logic and prepares the use of
smbdirect_send_batch in order to make sure
all messages in a multi fragment send are grouped
together.
We'll add the smbdirect_send_batch processin
in a later patch.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
If we reach this the connection is already broken as
smbd_post_send() already called
smbd_disconnect_rdma_connection().
This will also simplify further changes.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
We either reach this code path before we call
new_credits = manage_credits_prior_sending(sc),
which means new_credits is still 0
or the connection is already broken as
smbd_post_send() already called
smbd_disconnect_rdma_connection().
This will also simplify further changes.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
We don't need a stack variable in addition.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
In captures I saw that Windows was granting 191 credits in a batch
when its peer posted a lot of messages. We are asking for a
credit target of 255 and 191 is 252*3/4.
So we also use that logic in order to fill the
recv buffers available to the peer.
Fixes: 02548c477a ("smb: client: queue post_recv_credits_work also if the peer raises the credit target")
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The logic off managing recv credits by counting posted recv_io and
granted credits is racy.
That's because the peer might already consumed a credit,
but between receiving the incoming recv at the hardware
and processing the completion in the 'recv_done' functions
we likely have a window where we grant credits, which
don't really exist.
So we better have a decicated counter for the
available credits, which will be incremented
when we posted new recv buffers and drained when
we grant the credits to the peer.
Fixes: 5fb9b459b3 ("smb: client: count the number of posted recv_io messages in order to calculated credits")
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
With smbdirect_send_batch processing we likely have requests without
IB_SEND_SIGNALED, which will be destroyed in the final request
that has IB_SEND_SIGNALED set.
If the connection is broken all requests are signaled
even without explicit IB_SEND_SIGNALED.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
When we are about to use the last send credit that was
granted to us by the peer, we need to wait until
we are ourself able to grant at least one credit
to the peer. Otherwise it might not be possible
for the peer to grant more credits.
The following sections in MS-SMBD are related to this:
3.1.5.1 Sending Upper Layer Messages
...
If Connection.SendCredits is 1 and the CreditsGranted field of the
message is 0, stop processing.
...
3.1.5.9 Managing Credits Prior to Sending
...
If Connection.ReceiveCredits is zero, or if Connection.SendCredits is
one and the Connection.SendQueue is not empty, the sender MUST allocate
and post at least one receive of size Connection.MaxReceiveSize and MUST
increment Connection.ReceiveCredits by the number allocated and posted.
If no receives are posted, the processing MUST return a value of zero to
indicate to the caller that no Send message can be currently performed.
...
This problem was found by running this on Windows 2025
against ksmbd with required smb signing:
'frametest.exe -r 4k -t 20 -n 2000' after
'frametest.exe -w 4k -t 20 -n 2000'.
Link: https://lore.kernel.org/linux-cifs/b58fa352-2386-4145-b42e-9b4b1d484e17@samba.org/
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
It turns out that our code will corrupt the stream of
reassabled data transfer messages when we trigger an
immendiate (empty) send.
In order to fix this we'll have a single 'batch' credit per
connection. And code getting that credit is free to use
as much messages until remaining_length reaches 0, then
the batch credit it given back and the next logical send can
happen.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
In captures I saw that Windows was granting 191 credits in a batch
when its peer posted a lot of messages. We are asking for a
credit target of 255 and 191 is 252*3/4.
So we also use that logic in order to fill the
recv buffers available to the peer.
Fixes: a7eef6144c ("smb: server: queue post_recv_credits_work in put_recvmsg() and avoid count_avail_recvmsg")
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The logic off managing recv credits by counting posted recv_io and
granted credits is racy.
That's because the peer might already consumed a credit,
but between receiving the incoming recv at the hardware
and processing the completion in the 'recv_done' functions
we likely have a window where we grant credits, which
don't really exist.
So we better have a decicated counter for the
available credits, which will be incremented
when we posted new recv buffers and drained when
we grant the credits to the peer.
This fixes regression Namjae reported with
the 6.18 release.
Fixes: 89b021a726 ("smb: server: manage recv credits by counting posted recv_io and granted credits")
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
It turns out that our code will corrupt the stream of
reassabled data transfer messages when we trigger an
immendiate (empty) send.
In order to fix this we'll have a single 'batch' credit per
connection. And code getting that credit is free to use
as much messages until remaining_length reaches 0, then
the batch credit it given back and the next logical send can
happen.
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The logic off managing recv credits by counting posted recv_io and
granted credits is racy.
That's because the peer might already consumed a credit,
but between receiving the incoming recv at the hardware
and processing the completion in the 'recv_done' functions
we likely have a window where we grant credits, which
don't really exist.
So we better have a decicated counter for the
available credits, which will be incremented
when we posted new recv buffers and drained when
we grant the credits to the peer.
Fixes: 5fb9b459b3 ("smb: client: count the number of posted recv_io messages in order to calculated credits")
Fixes: 89b021a726 ("smb: server: manage recv credits by counting posted recv_io and granted credits")
Cc: <stable@vger.kernel.org> # 6.18.x
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
One final batch of fixes for the Tegra SPI drivers, the main one is a
batch of fixes for races with the interrupts in the Tegra210 QSPI driver
that Breno has been working on for a while.
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Merge tag 'spi-fix-v6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"One final batch of fixes for the Tegra SPI drivers, the main one is a
batch of fixes for races with the interrupts in the Tegra210 QSPI
driver that Breno has been working on for a while"
* tag 'spi-fix-v6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: tegra114: Preserve SPI mode bits in def_command1_reg
spi: tegra: Fix a memory leak in tegra_slink_probe()
spi: tegra210-quad: Protect curr_xfer check in IRQ handler
spi: tegra210-quad: Protect curr_xfer clearing in tegra_qspi_non_combined_seq_xfer
spi: tegra210-quad: Protect curr_xfer in tegra_qspi_combined_seq_xfer
spi: tegra210-quad: Protect curr_xfer assignment in tegra_qspi_setup_transfer_one
spi: tegra210-quad: Move curr_xfer read inside spinlock
spi: tegra210-quad: Return IRQ_HANDLED when timeout already processed transfer
One last fix for v6.19, the voltages for the SpaceMIT P1 were not
described correctly.
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Merge tag 'regulator-fix-v6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"One last fix for v6.19: the voltages for the SpaceMIT P1 were not
described correctly"
* tag 'regulator-fix-v6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: spacemit-p1: Fix n_voltages for BUCK and LDO regulators
Here are some small, last-minute binder C and Rust driver fixes for
reported issues. They include a number of fixes for reported crashes
and other problems.
All of these have been in linux-next this week, and longer.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull binder fixes from Greg KH:
"Here are some small, last-minute binder C and Rust driver fixes for
reported issues. They include a number of fixes for reported crashes
and other problems.
All of these have been in linux-next this week, and longer"
* tag 'char-misc-6.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
binderfs: fix ida_alloc_max() upper bound
rust_binderfs: fix ida_alloc_max() upper bound
binder: fix BR_FROZEN_REPLY error log
rust_binder: add additional alignment checks
binder: fix UAF in binder_netlink_report()
rust_binder: correctly handle FDA objects of length zero
performance regressions in the recent rewrite
of the SCHED_MM_CID management code:
- Fix livelock triggered by BPF CI testing
- Fix hard lockup on weakly ordered systems
- Simplify the dropping of CIDs in the exit path
by removing an unintended transition phase.
- Fix performance/scalability regression on a
thread-pool benchmark by optimizing transitional
CIDs when scheduling out.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Miscellaneous MMCID fixes to address bugs and performance regressions
in the recent rewrite of the SCHED_MM_CID management code:
- Fix livelock triggered by BPF CI testing
- Fix hard lockup on weakly ordered systems
- Simplify the dropping of CIDs in the exit path by removing an
unintended transition phase
- Fix performance/scalability regression on a thread-pool benchmark
by optimizing transitional CIDs when scheduling out"
* tag 'sched-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/mmcid: Optimize transitional CIDs when scheduling out
sched/mmcid: Drop per CPU CID immediately when switching to per task mode
sched/mmcid: Protect transition on weakly ordered systems
sched/mmcid: Prevent live lock on task to CPU mode transition
- Bump up the Clang minimum version requirements
for livepatch builds, due to Clang assembler
section handling bugs causing silent
miscompilations.
- Strip livepatching symbol artifacts from
non-livepatch modules.
- Fix livepatch build warnings when certain
Clang LTO options are enabled.
- Fix livepatch build error when
CONFIG_MEM_ALLOC_PROFILING_DEBUG=y.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar::
- Bump up the Clang minimum version requirements for livepatch
builds, due to Clang assembler section handling bugs causing
silent miscompilations
- Strip livepatching symbol artifacts from non-livepatch modules
- Fix livepatch build warnings when certain Clang LTO options
are enabled
- Fix livepatch build error when CONFIG_MEM_ALLOC_PROFILING_DEBUG=y
* tag 'objtool-urgent-2026-02-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool/klp: Fix unexported static call key access for manually built livepatch modules
objtool/klp: Fix symbol correlation for orphaned local symbols
livepatch: Free klp_{object,func}_ext data after initialization
livepatch: Fix having __klp_objects relics in non-livepatch modules
livepatch/klp-build: Require Clang assembler >= 20
Fedora QA reported the following panic:
BUG: unable to handle page fault for address: 0000000040003e54
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20251119-3.fc43 11/19/2025
RIP: 0010:vmware_hypercall4.constprop.0+0x52/0x90
..
Call Trace:
vmmouse_report_events+0x13e/0x1b0
psmouse_handle_byte+0x15/0x60
ps2_interrupt+0x8a/0xd0
...
because the QEMU VMware mouse emulation is buggy, and clears the top 32
bits of %rdi that the kernel kept a pointer in.
The QEMU vmmouse driver saves and restores the register state in a
"uint32_t data[6];" and as a result restores the state with the high
bits all cleared.
RDI originally contained the value of a valid kernel stack address
(0xff5eeb3240003e54). After the vmware hypercall it now contains
0x40003e54, and we get a page fault as a result when it is dereferenced.
The proper fix would be in QEMU, but this works around the issue in the
kernel to keep old setups working, when old kernels had not happened to
keep any state in %rdi over the hypercall.
In theory this same issue exists for all the hypercalls in the vmmouse
driver; in practice it has only been seen with vmware_hypercall3() and
vmware_hypercall4(). For now, just mark RDI/RSI as clobbered for those
two calls. This should have a minimal effect on code generation overall
as it should be rare for the compiler to want to make RDI/RSI live
across hypercalls.
Reported-by: Justin Forbes <jforbes@fedoraproject.org>
Link: https://lore.kernel.org/all/99a9c69a-fc1a-43b7-8d1e-c42d6493b41f@broadcom.com/
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
and the other addresses a locking issue which has been there for 1+ years.
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Merge tag 'mm-hotfixes-stable-2026-02-06-12-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull hotfixes from Andrew Morton:
"A couple of late-breaking MM fixes. One against a new-in-this-cycle
patch and the other addresses a locking issue which has been there for
over a year"
* tag 'mm-hotfixes-stable-2026-02-06-12-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/memory-failure: reject unsupported non-folio compound page
procfs: avoid fetching build ID while holding VMA lock
- Fix event format field alignments for 32 bit architectures
The fields in the event format files are used to parse the raw binary
buffer data by applications. If they are incorrect, then the application
produces garbage.
On 32 bit architectures, the function graph 64bit calltime and rettime
were off by 4bytes. That's because the actual fields are in a packed
structure but the macros used by the ftrace events did not mark them as
packed, and instead, gave them their natural alignment which made their
offsets off by 4 bytes.
There are macros to have a packed field within an embedded structure of
an event, but there's no macro for normal fields within a packed
structure of the event. The macro __field_packed() was used for the
packed embedded structure field. Rename that to __field_desc_pcaked() (to
match the non-packed embedded field macro __field_desc()), and make
__field_packed() for fields that are in a packed event structure (which
matches the unpacked __field() macro).
Switch the calltime and rettime fields of the function graph event to use
the new __field_packed() and this makes the offsets correct.
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Merge tag 'trace-v6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fix from Steven Rostedt:
- Fix event format field alignments for 32 bit architectures
The fields in the event format files are used to parse the raw binary
buffer data by applications. If they are incorrect, then the
application produces garbage.
On 32 bit architectures, the function graph 64bit calltime and
rettime were off by 4bytes. That's because the actual fields are in a
packed structure but the macros used by the ftrace events did not
mark them as packed, and instead, gave them their natural alignment
which made their offsets off by 4 bytes.
There are macros to have a packed field within an embedded structure
of an event, but there's no macro for normal fields within a packed
structure of the event. The macro __field_packed() was used for the
packed embedded structure field. Rename that to __field_desc_packed()
(to match the non-packed embedded field macro __field_desc()), and
make __field_packed() for fields that are in a packed event structure
(which matches the unpacked __field() macro).
Switch the calltime and rettime fields of the function graph event to
use the new __field_packed() and this makes the offsets correct.
* tag 'trace-v6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix ftrace event field alignments
thing is more of a rare edge case that pops up in our CI, while the two
CephFS scenarios are regressions that were reported by users and can be
triggered trivially in normal operation. All marked for stable.
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Merge tag 'ceph-for-6.19-rc9' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"One RBD and two CephFS fixes which address potential oopses.
The RBD thing is more of a rare edge case that pops up in our CI,
while the two CephFS scenarios are regressions that were reported by
users and can be triggered trivially in normal operation. All marked
for stable"
* tag 'ceph-for-6.19-rc9' of https://github.com/ceph/ceph-client:
ceph: fix NULL pointer dereference in ceph_mds_auth_match()
ceph: fix oops due to invalid pointer for kfree() in parse_longname()
rbd: check for EOD after exclusive lock is ensured to be held
Two minor fixes for DMA-mapping subsystem:
- check for the rare case of the allocation failure of the global CMA pool
(Shanker Donthineni)
- avoid perf buffer overflow when tracing large scatter-gather lists
(Deepanshu Kartikey)
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Merge tag 'dma-mapping-6.19-2026-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux
Pull dma-mapping fixes from Marek Szyprowski:
"Two minor fixes for the DMA-mapping subsystem:
- check for the rare case of the allocation failure of the global CMA
pool (Shanker Donthineni)
- avoid perf buffer overflow when tracing large scatter-gather lists
(Deepanshu Kartikey)"
* tag 'dma-mapping-6.19-2026-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux:
dma: contiguous: Check return value of dma_contiguous_reserve_area()
tracing/dma: Cap dma_map_sg tracepoint arrays to prevent buffer overflow
- imx: Fix system wakeup support for imx8mp power domains
- imx: Fix potential out-of-range access for imx8m power domains
- imx: Fix the imx8mm gpu hang
- qcom: Fix off-by-one error for highest state in rpmpd
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Merge tag 'pmdomain-v6.19-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain fixes from Ulf Hansson:
- imx:
- Fix system wakeup support for imx8mp power domains
- Fix potential out-of-range access for imx8m power domains
- Fix the imx8mm gpu hang
- qcom: Fix off-by-one error for highest state in rpmpd
* tag 'pmdomain-v6.19-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
pmdomain: imx8mp-blk-ctrl: Keep usb phy power domain on for system wakeup
pmdomain: imx8mp-blk-ctrl: Keep gpc power domain on for system wakeup
pmdomain: imx8m-blk-ctrl: fix out-of-range access of bc->domains
pmdomain: imx: gpcv2: Fix the imx8mm gpu hang due to wrong adb400 reset
pmdomain: qcom: rpmpd: fix off-by-one error in clamping to the highest state
A collection of small fixes. It became a bit larger than wished,
but all of them are device-specific small fixes, and it should be
still fairly safe to take at the last minute.
Included are a few quirks and fixes for Intel, AMD, HD-audio, and
USB-audio, as well as a race fix in aloop driver and corrections
of Cirrus firmware kunit test
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Merge tag 'sound-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes. It became a bit larger than wished, but
all of them are device-specific small fixes, and it should be still
fairly safe to take at the last minute.
Included are a few quirks and fixes for Intel, AMD, HD-audio, and
USB-audio, as well as a race fix in aloop driver and corrections of
Cirrus firmware kunit test"
* tag 'sound-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek: Enable headset mic for Acer Nitro 5
ASoC: fsl_xcvr: fix missing lock in fsl_xcvr_mode_put()
ASoC: dt-bindings: ti,tlv320aic3x: Add compatible string ti,tlv320aic23
ASoC: amd: fix memory leak in acp3x pdm dma ops
ALSA: usb-audio: fix broken logic in snd_audigy2nx_led_update()
ALSA: aloop: Fix racy access at PCM trigger
ASoC: rt1320: fix intermittent no-sound issue
ASoC: SOF: Intel: use hdev->info.link_mask directly
firmware: cs_dsp: rate-limit log messages in KUnit builds
ASoC: amd: yc: Add quirk for HP 200 G2a 16
ASoC: cs42l43: Correct handling of 3-pole jack load detection
ASoC: Intel: sof_es8336: Add DMI quirk for Huawei BOD-WXX9
ASoC: sof_sdw: Add a quirk for Lenovo laptop using sidecar amps with cs42l43
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Merge tag 'slab-for-6.19-rc8-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fix from Vlastimil Babka:
"A stable fix for memory allocation profiling tag not being cleared
when aborting an allocation due to memcg charge failure (Hao Ge)"
* tag 'slab-for-6.19-rc8-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: Add alloc_tagging_slab_free_hook for memcg_alloc_abort_single
Just one fix for memset64() on big endian 32-bit ARM systems.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux
Pull ARM fix from Russell King:
"Just one fix for memset64() on big endian 32-bit ARM systems"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux:
ARM: 9468/1: fix memset64() on big-endian
The PASID_FLAG_PAGE_SNOOP and PASID_FLAG_PWSNP constants are identical.
This will cause the pasid code to always set both or neither of the
PGSNP and PWSNP bits in PASID table entries. However, PWSNP is a
reserved bit if SMPWC is not set in the IOMMU's extended capability
register, even if SC is supported.
This has resulted in DMAR errors when testing the iommufd code on an
Arrow Lake platform. With this patch, those errors disappear and the
PASID table entries look correct.
Fixes: 101a285411 ("iommu/vt-d: Follow PT_FEAT_DMA_INCOHERENT into the PASID entry")
Cc: stable@vger.kernel.org
Signed-off-by: Viktor Kleen <viktor@kleen.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20260202192109.1665799-1-viktor@kleen.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
- occ: Mark occ_init_attribute() as __printf to avoid build failure
- gpio-fan: Allow to stop fans when CONFIG_PM is disabled, and
fix set_rpm() return value
- acpi_power_meter: Fix deadlocks related to acpi_power_meter_notify()
- dell-smm: Add Dell G15 5510 to fan control whitelist
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Merge tag 'hwmon-for-v6.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
- occ: Mark occ_init_attribute() as __printf to avoid build failure due
to '-Werror=suggest-attribute=format'
- gpio-fan: Allow to stop fans when CONFIG_PM is disabled, and fix
set_rpm() return value
- acpi_power_meter: Fix deadlocks related to acpi_power_meter_notify()
- dell-smm: Add Dell G15 5510 to fan control whitelist
* tag 'hwmon-for-v6.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (occ) Mark occ_init_attribute() as __printf
hwmon: (gpio-fan) Allow to stop FANs when CONFIG_PM is disabled
hwmon: (gpio-fan) Fix set_rpm() return value
hwmon: (acpi_power_meter) Fix deadlocks related to acpi_power_meter_notify()
hwmon: (dell-smm) Add Dell G15 5510 to fan control whitelist
amdgpu:
- MES 11 old firmware compatibility fix
- ASPM fix
- DC LUT fixes
amdkfd:
- Fix possible double deletion of validate list
xe:
- Fix topology query pointer advance
- A couple of kerneldoc fixes
- Disable D3Cold for BMG only on specific platforms
- Fix CFI violation in debugfs access
nouveau:
- Revert adding atomic commit functions as it regresses pre-nv50.
- Fix suspend/resume bugs exposed by enabling 570 firmware.
gma500:
- Revert a regression caused by vblank changes.
mgag200:
- Replace a busy loop with a polling loop to fix that blocking 1 cpu for 300 ms roughly every 20 minutes.
bridge:
- imx8mp-hdmi-pa: Use runtime pm to fix a bug in channel ordering.
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Merge tag 'drm-fixes-2026-02-06' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"The usual xe/amdgpu selection, and a couple of misc changes for
gma500, mgag200 and bridge. There is a nouveau revert, and also a set
of changes that fix a regression since we moved to 570 firmware.
Suspend/resume was broken on a bunch of GPUs. The fix looks big, but
it's mostly just refactoring to pass an extra bit down the nouveau
abstractions to the firmware command.
amdgpu:
- MES 11 old firmware compatibility fix
- ASPM fix
- DC LUT fixes
amdkfd:
- Fix possible double deletion of validate list
xe:
- Fix topology query pointer advance
- A couple of kerneldoc fixes
- Disable D3Cold for BMG only on specific platforms
- Fix CFI violation in debugfs access
nouveau:
- Revert adding atomic commit functions as it regresses pre-nv50
- Fix suspend/resume bugs exposed by enabling 570 firmware
gma500:
- Revert a regression caused by vblank changes
mgag200:
- Replace a busy loop with a polling loop to fix that blocking 1 cpu
for 300 ms roughly every 20 minutes
bridge:
- imx8mp-hdmi-pa: Use runtime pm to fix a bug in channel ordering"
* tag 'drm-fixes-2026-02-06' of https://gitlab.freedesktop.org/drm/kernel:
drm/xe/guc: Fix CFI violation in debugfs access.
drm/bridge: imx8mp-hdmi-pai: enable PM runtime
drm/xe/pm: Disable D3Cold for BMG only on specific platforms
drm/xe: Fix kerneldoc for xe_tlb_inval_job_alloc_dep
drm/xe: Fix kerneldoc for xe_gt_tlb_inval_init_early
drm/xe: Fix kerneldoc for xe_migrate_exec_queue
drm/xe/query: Fix topology query pointer advance
drm/mgag200: fix mgag200_bmc_stop_scanout()
nouveau/gsp: fix suspend/resume regression on r570 firmware
nouveau: add a third state to the fini handler.
nouveau/gsp: use rpc sequence numbers properly.
drm/amdgpu: Fix double deletion of validate_list
drm/amd/display: remove assert around dpp_base replacement
drm/amd/display: extend delta clamping logic to CM3 LUT helper
drm/amd/display: fix wrong color value mapping on MCM shaper LUT
Revert "drm/amd: Check if ASPM is enabled from PCIe subsystem"
drm/amd: Set minimum version for set_hw_resource_1 on gfx11 to 0x52
Revert "drm/gma500: use drm_crtc_vblank_crtc()"
Revert "drm/nouveau/disp: Set drm_mode_config_funcs.atomic_(check|commit)"
amdgpu:
- MES 11 old firmware compatibility fix
- ASPM fix
- DC LUT fixes
amdkfd:
- Fix possible double deletion of validate list
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Merge tag 'amd-drm-fixes-6.19-2026-02-05' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.19-2026-02-05:
amdgpu:
- MES 11 old firmware compatibility fix
- ASPM fix
- DC LUT fixes
amdkfd:
- Fix possible double deletion of validate list
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260205182017.2409773-1-alexander.deucher@amd.com
- Fix topology query pointer advance (Shuicheng)
- A couple of kerneldoc fixes (Shuicheng)
- Disable D3Cold for BMG only on specific platforms (Karthik)
- Fix CFI violation in debugfs access (Daniele)
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Merge tag 'drm-xe-fixes-2026-02-05' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
Driver Changes:
- Fix topology query pointer advance (Shuicheng)
- A couple of kerneldoc fixes (Shuicheng)
- Disable D3Cold for BMG only on specific platforms (Karthik)
- Fix CFI violation in debugfs access (Daniele)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/aYS2v12R8ELQoTiZ@fedora
drm-misc-fixes for v6.19 final:
nouveau
-------
Revert adding atomic commit functions as it regresses pre-nv50.
Fix bugs exposed by enabling 570 firmware.
gma500
------
Revert a regression caused by vblank changes.
mgag200
-------
Replace a busy loop with a polling loop to fix that blocking 1 cpu for 300 ms roughly every 20 minutes.
bridge
------
imx8mp-hdmi-pa: Use runtime pm to fix a bug in channel ordering.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/c0077ea5-faeb-4b0c-bd4a-ea2384d6dc0c@linux.intel.com
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Merge tag 'block-6.19-20260205' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Revert of a change for loop, which caused regressions for some users
(Actually revert of two commits, where one is just an existing fix
for the offending commit)
- NVMe pull via Keith:
- Fix NULL pointer access setting up dma mappings
- Fix invalid memory access from malformed TCP PDU
* tag 'block-6.19-20260205' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
loop: revert exclusive opener loop status change
nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
nvme-pci: handle changing device dma map requirements
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Merge tag 'io_uring-6.19-20260205' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Two small fixes for zcrx
- Two small fixes for fdinfo - one is just killing a superflous newline
* tag 'io_uring-6.19-20260205' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/fdinfo: be a bit nicer when looping a lot of SQEs/CQEs
io_uring/fdinfo: kill unnecessary newline feed in CQE32 printing
io_uring/zcrx: fix rq flush locking
io_uring/zcrx: fix page array leak
