Since the selftests that are not supposed to run on veth pairs are now in
their own dedicated directory, the skip_on_veth logic can go away. Drop it
from the selftests, and from lib.sh.

Cc: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/63b470e10d65270571ee7de709b31672ce314872.1711464583.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The tests in net/forwarding are generally expected to be HW-independent.
There are however several tests that, while not depending on any HW in
particular, nevertheless depend on being used on HW interfaces. Placing
these selftests to net/forwarding is confusing, because the selftest will
just report it can't be run on veth pairs. At the same time, placing them
to a particular driver's selftests subdirectory would be wrong.

Instead, add a new directory, drivers/net/hw, where these generic but HW
independent selftests should be placed. Move over several such tests
including one helper library.

Since typically these tests will not be expected to run, omit the directory
drivers/net/hw from the TARGETS list in selftests/Makefile. Retain a
Makefile in the new directory itself, so that a user can make -C into that
directory and act on those tests explicitly.

Cc: Roger Quadros <rogerq@kernel.org>
Cc: Tobias Waldekranz <tobias@waldekranz.com>
Cc: Danielle Ratson <danieller@nvidia.com>
Cc: Davide Caratti <dcaratti@redhat.com>
Cc: Johannes Nixdorf <jnixdorf-oss@avm.de>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/e11dae1f62703059e9fc2240004288ac7cc15756.1711464583.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

This library is always sourced in the context where lib.sh has already been
sourced as well. Therefore drop the explicit sourcing and expect the client
to already have done it. This will simplify moving some of the clients to a
different directory.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/a4da5e9cd42a34cbace917a048ca71081719d6ac.1711464583.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

That any sort of customization is possible at all, let alone how it should
be done, is currently not at all clear. Document the whats and hows in
README.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
Link: https://lore.kernel.org/r/e819623af6aaeea49e9dc36cecd95694fad73bb8.1711464583.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

forwarding.config.sample, net/lib.sh and net/forwarding/lib.sh contain
definitions and redefinitions of some of the same variables. The overlap
between net/forwarding/lib.sh and forwarding.config.sample is especially
large. This duplication is a potential source of confusion and problems.

It would be overall less error prone if each variable were defined in one
place only. In this patch set, that place is the library itself. Therefore
move all comments from forwarding.config.sample to net/forwarding/lib.sh.

Move over also a definition of TC_FLAG, which was missing from lib.sh
entirely.

Additionally, add to lib.sh a default definition of the topology variables.
The logic behind this is that forgetting to specify forwarding.config was a
frequent source of frustration for the selftest users. But really, most of
the time the default veth based topology is just fine. We considered just
sourcing forwarding.config.sample instead if forwarding.config is not
available, but this is a cleaner solution.

That means the syntax of the forwarding.config.sample override has to
change to an array assignment, so that the whole variable is overwritten,
not just individual keys, which could leave the value of some keys
unchanged. Do the same in lib.sh for any cut'n'pasters out there.

The config file is then given a sort of carte blanche to redefine whatever
variables it sees fit from the libraries. This is described in a comment in
the file. Only a handful of variables are left behind, to illustrate the
customization.

The fact that the variables are now missing from forwarding.config.sample,
and therefore would miss from forwarding.config derived from that file as
well, should not change anything. This is just the sample file. Users that
keep their own forwarding.config would retain it as before.

The only observable change is introduction of TC_FLAG to lib.sh, because
now the filters would not be attempted to install to HW datapath. For veth
pairs this does not change anything. For HW deployments, users presumably
have forwarding.config with this value overridden.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
Link: https://lore.kernel.org/r/b9b8a11a22821a7aa532211ff461a34f596e26bf.1711464583.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The current syntax of X=${X:=X} first evaluates the ${X:=Y} expression,
which either uses the existing value of $X if there is one, or uses the
value of "Y" as a fallback, and assigns it to X. The expression is then
replaced with the now-current value of $X. Assigning that value to X once
more is meaningless.

So avoid the outer X=... bit, and instead express the same idea though the
do-nothing ":" built-in as : "${X:=Y}". This also cleans up the block
nicely and makes it more readable.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Benjamin Poirier <bpoirier@nvidia.com>
Link: https://lore.kernel.org/r/1890ddc58420c2c0d5ba3154c87ecc6d9faf6947.1711464583.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Cross-merge networking fixes after downstream PR.

No conflicts, or adjacent changes.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Pull networking fixes from Paolo Abeni:
 "Including fixes from bpf, WiFi and netfilter.

  Current release - regressions:

   - ipv6: fix address dump when IPv6 is disabled on an interface

  Current release - new code bugs:

   - bpf: temporarily disable atomic operations in BPF arena

   - nexthop: fix uninitialized variable in nla_put_nh_group_stats()

  Previous releases - regressions:

   - bpf: protect against int overflow for stack access size

   - hsr: fix the promiscuous mode in offload mode

   - wifi: don't always use FW dump trig

   - tls: adjust recv return with async crypto and failed copy to
     userspace

   - tcp: properly terminate timers for kernel sockets

   - ice: fix memory corruption bug with suspend and rebuild

   - at803x: fix kernel panic with at8031_probe

   - qeth: handle deferred cc1

  Previous releases - always broken:

   - bpf: fix bug in BPF_LDX_MEMSX

   - netfilter: reject table flag and netdev basechain updates

   - inet_defrag: prevent sk release while still in use

   - wifi: pick the version of SESSION_PROTECTION_NOTIF

   - wwan: t7xx: split 64bit accesses to fix alignment issues

   - mlxbf_gige: call request_irq() after NAPI initialized

   - hns3: fix kernel crash when devlink reload during pf
     initialization"

* tag 'net-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (81 commits)
  inet: inet_defrag: prevent sk release while still in use
  Octeontx2-af: fix pause frame configuration in GMP mode
  net: lan743x: Add set RFE read fifo threshold for PCI1x1x chips
  net: bcmasp: Remove phy_{suspend/resume}
  net: bcmasp: Bring up unimac after PHY link up
  net: phy: qcom: at803x: fix kernel panic with at8031_probe
  netfilter: arptables: Select NETFILTER_FAMILY_ARP when building arp_tables.c
  netfilter: nf_tables: skip netdev hook unregistration if table is dormant
  netfilter: nf_tables: reject table flag and netdev basechain updates
  netfilter: nf_tables: reject destroy command to remove basechain hooks
  bpf: update BPF LSM designated reviewer list
  bpf: Protect against int overflow for stack access size
  bpf: Check bloom filter map value size
  bpf: fix warning for crash_kexec
  selftests: netdevsim: set test timeout to 10 minutes
  net: wan: framer: Add missing static inline qualifiers
  mlxbf_gige: call request_irq() after NAPI initialized
  tls: get psock ref after taking rxlock to avoid leak
  selftests: tls: add test with a partially invalid iov
  tls: adjust recv return with async crypto and failed copy to userspace
  ...

ip_local_out() and other functions can pass skb->sk as function argument.

If the skb is a fragment and reassembly happens before such function call
returns, the sk must not be released.

This affects skb fragments reassembled via netfilter or similar
modules, e.g. openvswitch or ct_act.c, when run as part of tx pipeline.

Eric Dumazet made an initial analysis of this bug.  Quoting Eric:
  Calling ip_defrag() in output path is also implying skb_orphan(),
  which is buggy because output path relies on sk not disappearing.

  A relevant old patch about the issue was :
  8282f274 ("inet: frag: Always orphan skbs inside ip_defrag()")

  [..]

  net/ipv4/ip_output.c depends on skb->sk being set, and probably to an
  inet socket, not an arbitrary one.

  If we orphan the packet in ipvlan, then downstream things like FQ
  packet scheduler will not work properly.

  We need to change ip_defrag() to only use skb_orphan() when really
  needed, ie whenever frag_list is going to be used.

Eric suggested to stash sk in fragment queue and made an initial patch.
However there is a problem with this:

If skb is refragmented again right after, ip_do_fragment() will copy
head->sk to the new fragments, and sets up destructor to sock_wfree.
IOW, we have no choice but to fix up sk_wmem accouting to reflect the
fully reassembled skb, else wmem will underflow.

This change moves the orphan down into the core, to last possible moment.
As ip_defrag_offset is aliased with sk_buff->sk member, we must move the
offset into the FRAG_CB, else skb->sk gets clobbered.

This allows to delay the orphaning long enough to learn if the skb has
to be queued or if the skb is completing the reasm queue.

In the former case, things work as before, skb is orphaned.  This is
safe because skb gets queued/stolen and won't continue past reasm engine.

In the latter case, we will steal the skb->sk reference, reattach it to
the head skb, and fix up wmem accouting when inet_frag inflates truesize.

Fixes: 7026b1dd ("netfilter: Pass socket pointer down through okfn().")
Diagnosed-by: Eric Dumazet <edumazet@google.com>
Reported-by: xingwei lee <xrivendell7@gmail.com>
Reported-by: yue sun <samsun1006219@gmail.com>
Reported-by: syzbot+e5167d7144a62715044c@syzkaller.appspotmail.com
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240326101845.30836-1-fw@strlen.deSigned-off-by: Paolo Abeni <pabeni@redhat.com>

The Octeontx2 MAC block (CGX) has separate data paths (SMU and GMP) for
different speeds, allowing for efficient data transfer.

The previous patch which added pause frame configuration has a bug due
to which pause frame feature is not working in GMP mode.

This patch fixes the issue by configurating appropriate registers.

Fixes: f7e086e7 ("octeontx2-af: Pause frame configuration at cgx")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240326052720.4441-1-hkelam@marvell.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

PCI11x1x Rev B0 devices might drop packets when receiving back to back frames
at 2.5G link speed. Change the B0 Rev device's Receive filtering Engine FIFO
threshold parameter from its hardware default of 4 to 3 dwords to prevent the
problem. Rev C0 and later hardware already defaults to 3 dwords.

Fixes: bb4f6bff ("net: lan743x: Add PCI11010 / PCI11414 device IDs")
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240326065805.686128-1-Raju.Lakkaraju@microchip.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Justin Chen says:

====================
net: bcmasp: phy managements fixes

Fix two issues.

- The unimac may be put in a bad state if PHY RX clk doesn't exist
  during reset. Work around this by bringing the unimac out of reset
  during phy up.

- Remove redundant phy_{suspend/resume}
====================

Link: https://lore.kernel.org/r/20240325193025.1540737-1-justin.chen@broadcom.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

phy_{suspend/resume} is redundant. It gets called from phy_{stop/start}.

Fixes: 490cb412 ("net: bcmasp: Add support for ASP2.0 Ethernet controller")
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

The unimac requires the PHY RX clk during reset or it may be put
into a bad state. Bring up the unimac after link up to ensure the
PHY RX clk exists.

Fixes: 490cb412 ("net: bcmasp: Add support for ASP2.0 Ethernet controller")
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

On reworking and splitting the at803x driver, in splitting function of
at803x PHYs it was added a NULL dereference bug where priv is referenced
before it's actually allocated and then is tried to write to for the
is_1000basex and is_fiber variables in the case of at8031, writing on
the wrong address.

Fix this by correctly setting priv local variable only after
at803x_probe is called and actually allocates priv in the phydev struct.
Reported-by: William Wortel <wwortel@dorpstraat.com>
Cc: <stable@vger.kernel.org>
Fixes: 25d2ba94 ("net: phy: at803x: move specific at8031 probe mode check to dedicated probe")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240325190621.2665-1-ansuelsmth@gmail.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

Patch #1 reject destroy chain command to delete device hooks in netdev
         family, hence, only delchain commands are allowed.

Patch #2 reject table flag update interference with netdev basechain
	 hook updates, this can leave hooks in inconsistent
	 registration/unregistration state.

Patch #3 do not unregister netdev basechain hooks if table is dormant.
	 Otherwise, splat with double unregistration is possible.

Patch #4 fixes Kconfig to allow to restore IP_NF_ARPTABLES,
	 from Kuniyuki Iwashima.

There are a more fixes still in progress on my side that need more work.

* tag 'nf-24-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: arptables: Select NETFILTER_FAMILY_ARP when building arp_tables.c
  netfilter: nf_tables: skip netdev hook unregistration if table is dormant
  netfilter: nf_tables: reject table flag and netdev basechain updates
  netfilter: nf_tables: reject destroy command to remove basechain hooks
====================

Link: https://lore.kernel.org/r/20240328031855.2063-1-pablo@netfilter.orgSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Alexei Starovoitov says:

====================
pull-request: bpf 2024-03-27

The following pull-request contains BPF updates for your *net* tree.

We've added 4 non-merge commits during the last 1 day(s) which contain
a total of 5 files changed, 26 insertions(+), 3 deletions(-).

The main changes are:

1) Fix bloom filter value size validation and protect the verifier
   against such mistakes, from Andrei.

2) Fix build due to CONFIG_KEXEC_CORE/CRASH_DUMP split, from Hari.

3) Update bpf_lsm maintainers entry, from Matt.

* tag 'for-net' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: update BPF LSM designated reviewer list
  bpf: Protect against int overflow for stack access size
  bpf: Check bloom filter map value size
  bpf: fix warning for crash_kexec
====================

Link: https://lore.kernel.org/r/20240328012938.24249-1-alexei.starovoitov@gmail.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Pull erofs fixes from Gao Xiang:

 - Add a new reviewer Sandeep Dhavale to build a healthier community

 - Drop experimental warning for FSDAX

* tag 'erofs-for-6.9-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  MAINTAINERS: erofs: add myself as reviewer
  erofs: drop experimental warning for FSDAX

syzkaller started to report a warning below [0] after consuming the
commit 4654467d ("netfilter: arptables: allow xtables-nft only
builds").

The change accidentally removed the dependency on NETFILTER_FAMILY_ARP
from IP_NF_ARPTABLES.

If NF_TABLES_ARP is not enabled on Kconfig, NETFILTER_FAMILY_ARP will
be removed and some code necessary for arptables will not be compiled.

  $ grep -E "(NETFILTER_FAMILY_ARP|IP_NF_ARPTABLES|NF_TABLES_ARP)" .config
  CONFIG_NETFILTER_FAMILY_ARP=y
  # CONFIG_NF_TABLES_ARP is not set
  CONFIG_IP_NF_ARPTABLES=y

  $ make olddefconfig

  $ grep -E "(NETFILTER_FAMILY_ARP|IP_NF_ARPTABLES|NF_TABLES_ARP)" .config
  # CONFIG_NF_TABLES_ARP is not set
  CONFIG_IP_NF_ARPTABLES=y

So, when nf_register_net_hooks() is called for arptables, it will
trigger the splat below.

Now IP_NF_ARPTABLES is only enabled by IP_NF_ARPFILTER, so let's
restore the dependency on NETFILTER_FAMILY_ARP in IP_NF_ARPFILTER.

[0]:
WARNING: CPU: 0 PID: 242 at net/netfilter/core.c:316 nf_hook_entry_head+0x1e1/0x2c0 net/netfilter/core.c:316
Modules linked in:
CPU: 0 PID: 242 Comm: syz-executor.0 Not tainted 6.8.0-12821-g537c2e91 #10
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
RIP: 0010:nf_hook_entry_head+0x1e1/0x2c0 net/netfilter/core.c:316
Code: 83 fd 04 0f 87 bc 00 00 00 e8 5b 84 83 fd 4d 8d ac ec a8 0b 00 00 e8 4e 84 83 fd 4c 89 e8 5b 5d 41 5c 41 5d c3 e8 3f 84 83 fd <0f> 0b e8 38 84 83 fd 45 31 ed 5b 5d 4c 89 e8 41 5c 41 5d c3 e8 26
RSP: 0018:ffffc90000b8f6e8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff83c42164
RDX: ffff888106851180 RSI: ffffffff83c42321 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000000a
R10: 0000000000000003 R11: ffff8881055c2f00 R12: ffff888112b78000
R13: 0000000000000000 R14: ffff8881055c2f00 R15: ffff8881055c2f00
FS:  00007f377bd78800(0000) GS:ffff88811b000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000496068 CR3: 000000011298b003 CR4: 0000000000770ef0
PKRU: 55555554
Call Trace:
 <TASK>
 __nf_register_net_hook+0xcd/0x7a0 net/netfilter/core.c:428
 nf_register_net_hook+0x116/0x170 net/netfilter/core.c:578
 nf_register_net_hooks+0x5d/0xc0 net/netfilter/core.c:594
 arpt_register_table+0x250/0x420 net/ipv4/netfilter/arp_tables.c:1553
 arptable_filter_table_init+0x41/0x60 net/ipv4/netfilter/arptable_filter.c:39
 xt_find_table_lock+0x2e9/0x4b0 net/netfilter/x_tables.c:1260
 xt_request_find_table_lock+0x2b/0xe0 net/netfilter/x_tables.c:1285
 get_info+0x169/0x5c0 net/ipv4/netfilter/arp_tables.c:808
 do_arpt_get_ctl+0x3f9/0x830 net/ipv4/netfilter/arp_tables.c:1444
 nf_getsockopt+0x76/0xd0 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x17d/0x1c0 net/ipv4/ip_sockglue.c:1777
 tcp_getsockopt+0x99/0x100 net/ipv4/tcp.c:4373
 do_sock_getsockopt+0x279/0x360 net/socket.c:2373
 __sys_getsockopt+0x115/0x1e0 net/socket.c:2402
 __do_sys_getsockopt net/socket.c:2412 [inline]
 __se_sys_getsockopt net/socket.c:2409 [inline]
 __x64_sys_getsockopt+0xbd/0x150 net/socket.c:2409
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x4f/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x46/0x4e
RIP: 0033:0x7f377beca6fe
Code: 1f 44 00 00 48 8b 15 01 97 0a 00 f7 d8 64 89 02 b8 ff ff ff ff eb b8 0f 1f 44 00 00 f3 0f 1e fa 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 c9
RSP: 002b:00000000005df728 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00000000004966e0 RCX: 00007f377beca6fe
RDX: 0000000000000060 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000042938a R08: 00000000005df73c R09: 00000000005df800
R10: 00000000004966e8 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000496068 R14: 0000000000000003 R15: 00000000004bc9d8
 </TASK>

Fixes: 4654467d ("netfilter: arptables: allow xtables-nft only builds")
Reported-by: syzkaller <syzkaller@googlegroups.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Skip hook unregistration when adding or deleting devices from an
existing netdev basechain. Otherwise, commit/abort path try to
unregister hooks which not enabled.

Fixes: b9703ed4 ("netfilter: nf_tables: support for adding new devices to an existing netdev chain")
Fixes: 7d937b10 ("netfilter: nf_tables: support for deleting devices in an existing netdev chain")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

netdev basechain updates are stored in the transaction object hook list.
When setting on the table dormant flag, it iterates over the existing
hooks in the basechain. Thus, skipping the hooks that are being
added/deleted in this transaction, which leaves hook registration in
inconsistent state.

Reject table flag updates in combination with netdev basechain updates
in the same batch:

- Update table flags and add/delete basechain: Check from basechain update
  path if there are pending flag updates for this table.
- add/delete basechain and update table flags: Iterate over the transaction
  list to search for basechain updates from the table update path.

In both cases, the batch is rejected. Based on suggestion from Florian Westphal.

Fixes: b9703ed4 ("netfilter: nf_tables: support for adding new devices to an existing netdev chain")
Fixes: 7d937b10 ("netfilter: nf_tables: support for deleting devices in an existing netdev chain")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Report EOPNOTSUPP if NFT_MSG_DESTROYCHAIN is used to delete hooks in an
existing netdev basechain, thus, only NFT_MSG_DELCHAIN is allowed.

Fixes: 7d937b10 ("netfilter: nf_tables: support for deleting devices in an existing netdev chain")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Kalle Valo says:

====================
wireless fixes for v6.9-rc2

The first fixes for v6.9. Ping-Ke Shih now maintains a separate tree
for Realtek drivers, document that in the MAINTAINERS. Plenty of fixes
for both to stack and iwlwifi. Our kunit tests were working only on um
architecture but that's fixed now.

* tag 'wireless-2024-03-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless: (21 commits)
  MAINTAINERS: wifi: mwifiex: add Francesco as reviewer
  kunit: fix wireless test dependencies
  wifi: iwlwifi: mvm: include link ID when releasing frames
  wifi: iwlwifi: mvm: handle debugfs names more carefully
  wifi: iwlwifi: mvm: guard against invalid STA ID on removal
  wifi: iwlwifi: read txq->read_ptr under lock
  wifi: iwlwifi: fw: don't always use FW dump trig
  wifi: iwlwifi: mvm: rfi: fix potential response leaks
  wifi: mac80211: correctly set active links upon TTLM
  wifi: iwlwifi: mvm: Configure the link mapping for non-MLD FW
  wifi: iwlwifi: mvm: consider having one active link
  wifi: iwlwifi: mvm: pick the version of SESSION_PROTECTION_NOTIF
  wifi: mac80211: fix prep_connection error path
  wifi: cfg80211: fix rdev_dump_mpp() arguments order
  wifi: iwlwifi: mvm: disable MLO for the time being
  wifi: cfg80211: add a flag to disable wireless extensions
  wifi: mac80211: fix ieee80211_bss_*_flags kernel-doc
  wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes
  wifi: mac80211: fix mlme_link_id_dbg()
  MAINTAINERS: wifi: add git tree for Realtek WiFi drivers
  ...
====================

Link: https://lore.kernel.org/r/20240327191346.1A1EAC433C7@smtp.kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Pull 9p fixes from Eric Van Hensbergen:
 "Two of these fix syzbot reported issues, and the other fixes a unused
  variable in some configurations"

* tag '9p-fixes-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  fs/9p: fix uninitialized values during inode evict
  fs/9p: remove redundant pointer v9ses
  fs/9p: fix uaf in in v9fs_stat2inode_dotl

Pull btrfs fixes from David Sterba:

 - fix race when reading extent buffer and 'uptodate' status is missed
   by one thread (introduced in 6.5)

 - do additional validation of devices using major:minor numbers

 - zoned mode fixes:
     - use zone-aware super block access during scrub
     - fix use-after-free during device replace (found by KASAN)
     - also delete zones that are 100% unusable to reclaim space

 - extent unpinning fixes:
     - fix extent map leak after error handling
     - print correct range in error message

 - error code and message updates

* tag 'for-6.9-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix race in read_extent_buffer_pages()
  btrfs: return accurate error code on open failure in open_fs_devices()
  btrfs: zoned: don't skip block groups with 100% zone unusable
  btrfs: use btrfs_warn() to log message at btrfs_add_extent_mapping()
  btrfs: fix message not properly printing interval when adding extent map
  btrfs: fix warning messages not printing interval at unpin_extent_range()
  btrfs: fix extent map leak in unexpected scenario at unpin_extent_cache()
  btrfs: validate device maj:min during open
  btrfs: zoned: fix use-after-free in do_zone_finish()
  btrfs: zoned: use zone aware sb location for scrub

Merge tag 'mm-hotfixes-stable-2024-03-27-11-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "Various hotfixes. About half are cc:stable and the remainder address
  post-6.8 issues or aren't considered suitable for backporting.

  zswap figures prominently in the post-6.8 issues - folloup against the
  large amount of changes we have just made to that code.

  Apart from that, all over the map"

* tag 'mm-hotfixes-stable-2024-03-27-11-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits)
  crash: use macro to add crashk_res into iomem early for specific arch
  mm: zswap: fix data loss on SWP_SYNCHRONOUS_IO devices
  selftests/mm: fix ARM related issue with fork after pthread_create
  hexagon: vmlinux.lds.S: handle attributes section
  userfaultfd: fix deadlock warning when locking src and dst VMAs
  tmpfs: fix race on handling dquot rbtree
  selftests/mm: sigbus-wp test requires UFFD_FEATURE_WP_HUGETLBFS_SHMEM
  mm: zswap: fix writeback shinker GFP_NOIO/GFP_NOFS recursion
  ARM: prctl: reject PR_SET_MDWE on pre-ARMv6
  prctl: generalize PR_SET_MDWE support check to be per-arch
  MAINTAINERS: remove incorrect M: tag for dm-devel@lists.linux.dev
  mm: zswap: fix kernel BUG in sg_init_one
  selftests: mm: restore settings from only parent process
  tools/Makefile: remove cgroup target
  mm: cachestat: fix two shmem bugs
  mm: increase folio batch size
  mm,page_owner: fix recursion
  mailmap: update entry for Leonard Crestez
  init: open /initrd.image with O_LARGEFILE
  selftests/mm: Fix build with _FORTIFY_SOURCE
  ...

Adding myself in place of both Brendan and Florent as both have since
moved on from working on the BPF LSM and will no longer be devoting
their time to maintaining the BPF LSM.
Signed-off-by: Matt Bobrowski <mattbobrowski@google.com>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/r/ZgMhWF_egdYF8t4D@google.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

Merge tag 'probes-fixes-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull probes fixlet from Masami Hiramatsu:

 - tracing/probes: initialize a 'val' local variable with zero.

   This variable is read by FETCH_OP_ST_EDATA in a loop, and is
   initialized by FETCH_OP_ARG in the same loop. Since this
   initialization is not obvious, smatch warns about it.

   Explicitly initializing 'val' with zero fixes this warning.

* tag 'probes-fixes-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: probes: Fix to zero initialize a local variable

Pull execve fixes from Kees Cook:

 - Fix selftests to conform to the TAP output format (Muhammad Usama
   Anjum)

 - Fix NOMMU linux_binprm::exec pointer in auxv (Max Filippov)

 - Replace deprecated strncpy usage (Justin Stitt)

 - Replace another /bin/sh instance in selftests

* tag 'execve-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  binfmt: replace deprecated strncpy
  exec: Fix NOMMU linux_binprm::exec in transfer_args_to_stack()
  selftests/exec: Convert remaining /bin/sh to /bin/bash
  selftests/exec: execveat: Improve debug reporting
  selftests/exec: recursion-depth: conform test to TAP format output
  selftests/exec: load_address: conform test to TAP format output
  selftests/exec: binfmt_script: Add the overall result line according to TAP

Andrei Matei says:

====================
Check bloom filter map value size

v1->v2:
- prepend a patch addressing the bloom map specifically
- change low-level rejection error to EFAULT, to indicate a bug
====================

Link: https://lore.kernel.org/r/20240327024245.318299-1-andreimatei1@gmail.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

This patch re-introduces protection against the size of access to stack
memory being negative; the access size can appear negative as a result
of overflowing its signed int representation. This should not actually
happen, as there are other protections along the way, but we should
protect against it anyway. One code path was missing such protections
(fixed in the previous patch in the series), causing out-of-bounds array
accesses in check_stack_range_initialized(). This patch causes the
verification of a program with such a non-sensical access size to fail.

This check used to exist in a more indirect way, but was inadvertendly
removed in a833a17a.

Fixes: a833a17a ("bpf: Fix verification of indirect var-off stack access")
Reported-by: syzbot+33f4297b5f927648741a@syzkaller.appspotmail.com
Reported-by: syzbot+aafd0513053a1cbf52ef@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/bpf/CAADnVQLORV5PT0iTAhRER+iLBTkByCYNBYyvBSgjN1T31K+gOw@mail.gmail.com/Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Andrei Matei <andreimatei1@gmail.com>
Link: https://lore.kernel.org/r/20240327024245.318299-3-andreimatei1@gmail.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

This patch adds a missing check to bloom filter creating, rejecting
values above KMALLOC_MAX_SIZE. This brings the bloom map in line with
many other map types.

The lack of this protection can cause kernel crashes for value sizes
that overflow int's. Such a crash was caught by syzkaller. The next
patch adds more guard-rails at a lower level.
Signed-off-by: Andrei Matei <andreimatei1@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240327024245.318299-2-andreimatei1@gmail.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

Commit 576882ef ("uio: introduce UIO_MEM_DMA_COHERENT type")
introduced a new use-case for 'struct uio_mem' where the 'mem' field now
contains a kernel virtual address when 'memtype' is set to
UIO_MEM_DMA_COHERENT.

That in turn causes build errors, because 'mem' is of type
'phys_addr_t', and a virtual address is a pointer type.  When the code
just blindly uses cast to mix the two, it caused problems when
phys_addr_t isn't the same size as a pointer - notably on 32-bit
architectures with PHYS_ADDR_T_64BIT.

The proper thing to do would probably be to use a union member, and not
have any casts, and make the 'mem' member be a union of 'mem.physaddr'
and 'mem.vaddr', based on 'memtype'.

This is not that proper thing.  This is just fixing the ugly casts to be
even uglier, but at least not cause build errors on 32-bit platforms
with 64-bit physical addresses.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 576882ef ("uio: introduce UIO_MEM_DMA_COHERENT type")
Fixes: 7722151e ("uio_pruss: UIO_MEM_DMA_COHERENT conversion")
Fixes: 01994780 ("uio_dmem_genirq: UIO_MEM_DMA_COHERENT conversion")
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Chris Leech <cleech@redhat.com>
Cc: Nilesh Javali <njavali@marvell.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linuxfoundation.org>

If the clk ops.open() function returns an error, we don't release the
pccontext we allocated for this clock.

Re-organize the code slightly to make it all more obvious.
Reported-by: Rohit Keshri <rkeshri@redhat.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Fixes: 60c69466 ("posix-clock: introduce posix_clock_context concept")
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linuxfoundation.org>

With [1], crash dump specific code is moved out of CONFIG_KEXEC_CORE
and placed under CONFIG_CRASH_DUMP, where it is more appropriate.
And since CONFIG_KEXEC & !CONFIG_CRASH_DUMP build option is supported
with that, it led to the below warning:

  "WARN: resolve_btfids: unresolved symbol crash_kexec"

Fix it by using the appropriate #ifdef.

[1] https://lore.kernel.org/all/20240124051254.67105-1-bhe@redhat.com/Acked-by: Baoquan He <bhe@redhat.com>
Fixes: 02aff848 ("crash: split crash dumping code out from kexec_core.c")
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Link: https://lore.kernel.org/r/20240319080152.36987-1-hbathini@linux.ibm.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

Daniel Borkmann says:

====================
pull-request: bpf-next 2024-03-25

We've added 38 non-merge commits during the last 13 day(s) which contain
a total of 50 files changed, 867 insertions(+), 274 deletions(-).

The main changes are:

1) Add the ability to specify and retrieve BPF cookie also for raw
   tracepoint programs in order to ease migration from classic to raw
   tracepoints, from Andrii Nakryiko.

2) Allow the use of bpf_get_{ns_,}current_pid_tgid() helper for all
   program types and add additional BPF selftests, from Yonghong Song.

3) Several improvements to bpftool and its build, for example, enabling
   libbpf logs when loading pid_iter in debug mode, from Quentin Monnet.

4) Check the return code of all BPF-related set_memory_*() functions during
   load and bail out in case they fail, from Christophe Leroy.

5) Avoid a goto in regs_refine_cond_op() such that the verifier can
   be better integrated into Agni tool which doesn't support backedges
   yet, from Harishankar Vishwanathan.

6) Add a small BPF trie perf improvement by always inlining
   longest_prefix_match, from Jesper Dangaard Brouer.

7) Small BPF selftest refactor in bpf_tcp_ca.c to utilize start_server()
   helper instead of open-coding it, from Geliang Tang.

8) Improve test_tc_tunnel.sh BPF selftest to prevent client connect
   before the server bind, from Alessandro Carminati.

9) Fix BPF selftest benchmark for older glibc and use syscall(SYS_gettid)
   instead of gettid(), from Alan Maguire.

10) Implement a backward-compatible method for struct_ops types with
    additional fields which are not present in older kernels,
    from Kui-Feng Lee.

11) Add a small helper to check if an instruction is addr_space_cast
    from as(0) to as(1) and utilize it in x86-64 JIT, from Puranjay Mohan.

12) Small cleanup to remove unnecessary error check in
    bpf_struct_ops_map_update_elem, from Martin KaFai Lau.

13) Improvements to libbpf fd validity checks for BPF map/programs,
    from Mykyta Yatsenko.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (38 commits)
  selftests/bpf: Fix flaky test btf_map_in_map/lookup_update
  bpf: implement insn_is_cast_user() helper for JITs
  bpf: Avoid get_kernel_nofault() to fetch kprobe entry IP
  selftests/bpf: Use start_server in bpf_tcp_ca
  bpf: Sync uapi bpf.h to tools directory
  libbpf: Add new sec_def "sk_skb/verdict"
  selftests/bpf: Mark uprobe trigger functions with nocf_check attribute
  selftests/bpf: Use syscall(SYS_gettid) instead of gettid() wrapper in bench
  bpf-next: Avoid goto in regs_refine_cond_op()
  bpftool: Clean up HOST_CFLAGS, HOST_LDFLAGS for bootstrap bpftool
  selftests/bpf: scale benchmark counting by using per-CPU counters
  bpftool: Remove unnecessary source files from bootstrap version
  bpftool: Enable libbpf logs when loading pid_iter in debug mode
  selftests/bpf: add raw_tp/tp_btf BPF cookie subtests
  libbpf: add support for BPF cookie for raw_tp/tp_btf programs
  bpf: support BPF cookie in raw tracepoint (raw_tp, tp_btf) programs
  bpf: pass whole link instead of prog when triggering raw tracepoint
  bpf: flatten bpf_probe_register call chain
  selftests/bpf: Prevent client connect before server bind in test_tc_tunnel.sh
  selftests/bpf: Add a sk_msg prog bpf_get_ns_current_pid_tgid() test
  ...
====================

Link: https://lore.kernel.org/r/20240325233940.7154-1-daniel@iogearbox.netSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The longest running netdevsim test, nexthop.sh, currently takes
5 min to finish. Around 260s to be exact, and 310s on a debug kernel.
The default timeout in selftest is 45sec, so we need an explicit
config. Give ourselves some headroom and use 10min.

Commit under Fixes isn't really to "blame" but prior to that
netdevsim tests weren't integrated with kselftest infra
so blaming the tests themselves doesn't seem right, either.

Fixes: 8ff25dac ("netdevsim: add Makefile for selftests")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Compilation with CONFIG_GENERIC_FRAMER disabled lead to the following
warnings:
  framer.h:184:16: warning: no previous prototype for function 'framer_get' [-Wmissing-prototypes]
  184 | struct framer *framer_get(struct device *dev, const char *con_id)
  framer.h:184:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
  184 | struct framer *framer_get(struct device *dev, const char *con_id)
  framer.h:189:6: warning: no previous prototype for function 'framer_put' [-Wmissing-prototypes]
  189 | void framer_put(struct device *dev, struct framer *framer)
  framer.h:189:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
  189 | void framer_put(struct device *dev, struct framer *framer)

Add missing 'static inline' qualifiers for these functions.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202403241110.hfJqeJRu-lkp@intel.com/
Fixes: 82c944d0 ("net: wan: Add framer framework support")
Cc: stable@vger.kernel.org
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2024-03-25 (ice, ixgbe, igc)

This series contains updates to ice, ixgbe, and igc drivers.

Steven fixes incorrect casting of bitmap type for ice driver.

Jesse fixes memory corruption issue with suspend flow on ice.

Przemek adds GFP_ATOMIC flag to avoid sleeping in IRQ context for ixgbe.

Kurt Kanzenbach removes no longer valid comment on igc.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  igc: Remove stale comment about Tx timestamping
  ixgbe: avoid sleeping allocation in ixgbe_ipsec_vf_add_sa()
  ice: fix memory corruption bug with suspend and rebuild
  ice: Refactor FW data type and fix bitmap casting issue
====================

Link: https://lore.kernel.org/r/20240325200659.993749-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

The mlxbf_gige driver encounters a NULL pointer exception in
mlxbf_gige_open() when kdump is enabled.  The sequence to reproduce
the exception is as follows:
a) enable kdump
b) trigger kdump via "echo c > /proc/sysrq-trigger"
c) kdump kernel executes
d) kdump kernel loads mlxbf_gige module
e) the mlxbf_gige module runs its open() as the
   the "oob_net0" interface is brought up
f) mlxbf_gige module will experience an exception
   during its open(), something like:

     Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
     Mem abort info:
       ESR = 0x0000000086000004
       EC = 0x21: IABT (current EL), IL = 32 bits
       SET = 0, FnV = 0
       EA = 0, S1PTW = 0
       FSC = 0x04: level 0 translation fault
     user pgtable: 4k pages, 48-bit VAs, pgdp=00000000e29a4000
     [0000000000000000] pgd=0000000000000000, p4d=0000000000000000
     Internal error: Oops: 0000000086000004 [#1] SMP
     CPU: 0 PID: 812 Comm: NetworkManager Tainted: G           OE     5.15.0-1035-bluefield #37-Ubuntu
     Hardware name: https://www.mellanox.com BlueField-3 SmartNIC Main Card/BlueField-3 SmartNIC Main Card, BIOS 4.6.0.13024 Jan 19 2024
     pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
     pc : 0x0
     lr : __napi_poll+0x40/0x230
     sp : ffff800008003e00
     x29: ffff800008003e00 x28: 0000000000000000 x27: 00000000ffffffff
     x26: ffff000066027238 x25: ffff00007cedec00 x24: ffff800008003ec8
     x23: 000000000000012c x22: ffff800008003eb7 x21: 0000000000000000
     x20: 0000000000000001 x19: ffff000066027238 x18: 0000000000000000
     x17: ffff578fcb450000 x16: ffffa870b083c7c0 x15: 0000aaab010441d0
     x14: 0000000000000001 x13: 00726f7272655f65 x12: 6769675f6662786c
     x11: 0000000000000000 x10: 0000000000000000 x9 : ffffa870b0842398
     x8 : 0000000000000004 x7 : fe5a48b9069706ea x6 : 17fdb11fc84ae0d2
     x5 : d94a82549d594f35 x4 : 0000000000000000 x3 : 0000000000400100
     x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000066027238
     Call trace:
      0x0
      net_rx_action+0x178/0x360
      __do_softirq+0x15c/0x428
      __irq_exit_rcu+0xac/0xec
      irq_exit+0x18/0x2c
      handle_domain_irq+0x6c/0xa0
      gic_handle_irq+0xec/0x1b0
      call_on_irq_stack+0x20/0x2c
      do_interrupt_handler+0x5c/0x70
      el1_interrupt+0x30/0x50
      el1h_64_irq_handler+0x18/0x2c
      el1h_64_irq+0x7c/0x80
      __setup_irq+0x4c0/0x950
      request_threaded_irq+0xf4/0x1bc
      mlxbf_gige_request_irqs+0x68/0x110 [mlxbf_gige]
      mlxbf_gige_open+0x5c/0x170 [mlxbf_gige]
      __dev_open+0x100/0x220
      __dev_change_flags+0x16c/0x1f0
      dev_change_flags+0x2c/0x70
      do_setlink+0x220/0xa40
      __rtnl_newlink+0x56c/0x8a0
      rtnl_newlink+0x58/0x84
      rtnetlink_rcv_msg+0x138/0x3c4
      netlink_rcv_skb+0x64/0x130
      rtnetlink_rcv+0x20/0x30
      netlink_unicast+0x2ec/0x360
      netlink_sendmsg+0x278/0x490
      __sock_sendmsg+0x5c/0x6c
      ____sys_sendmsg+0x290/0x2d4
      ___sys_sendmsg+0x84/0xd0
      __sys_sendmsg+0x70/0xd0
      __arm64_sys_sendmsg+0x2c/0x40
      invoke_syscall+0x78/0x100
      el0_svc_common.constprop.0+0x54/0x184
      do_el0_svc+0x30/0xac
      el0_svc+0x48/0x160
      el0t_64_sync_handler+0xa4/0x12c
      el0t_64_sync+0x1a4/0x1a8
     Code: bad PC value
     ---[ end trace 7d1c3f3bf9d81885 ]---
     Kernel panic - not syncing: Oops: Fatal exception in interrupt
     Kernel Offset: 0x2870a7a00000 from 0xffff800008000000
     PHYS_OFFSET: 0x80000000
     CPU features: 0x0,000005c1,a3332a5a
     Memory Limit: none
     ---[ end Kernel panic - not syncing: Oops: Fatal exception in interrupt ]---

The exception happens because there is a pending RX interrupt before the
call to request_irq(RX IRQ) executes.  Then, the RX IRQ handler fires
immediately after this request_irq() completes. The RX IRQ handler runs
"napi_schedule()" before NAPI is fully initialized via "netif_napi_add()"
and "napi_enable()", both which happen later in the open() logic.

The logic in mlxbf_gige_open() must fully initialize NAPI before any calls
to request_irq() execute.

Fixes: f92e1869 ("Add Mellanox BlueField Gigabit Ethernet driver")
Signed-off-by: David Thompson <davthompson@nvidia.com>
Reviewed-by: Asmaa Mnebhi <asmaa@nvidia.com>
Link: https://lore.kernel.org/r/20240325183627.7641-1-davthompson@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>