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  1. Mar 29, 2024
  3. Mar 28, 2024
    • Florian Westphal's avatar
      inet: inet_defrag: prevent sk release while still in use · 18685451
      Florian Westphal authored 
      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: default avatarEric Dumazet <edumazet@google.com>
Reported-by: default avatarxingwei lee <xrivendell7@gmail.com>
Reported-by: default avataryue sun <samsun1006219@gmail.com>
Reported-by: default avatar <syzbot+e5167d7144a62715044c@syzkaller.appspotmail.com>
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240326101845.30836-1-fw@strlen.de


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      18685451
    • Hariprasad Kelam's avatar
      Octeontx2-af: fix pause frame configuration in GMP mode · 40d4b480
      Hariprasad Kelam authored 
      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: default avatarHariprasad Kelam <hkelam@marvell.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240326052720.4441-1-hkelam@marvell.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      40d4b480
    • Raju Lakkaraju's avatar
      net: lan743x: Add set RFE read fifo threshold for PCI1x1x chips · e4a58989
      Raju Lakkaraju authored 
      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: default avatarRaju Lakkaraju <Raju.Lakkaraju@microchip.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240326065805.686128-1-Raju.Lakkaraju@microchip.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      e4a58989
    • Paolo Abeni's avatar
      Merge branch 'net-bcmasp-phy-managements-fixes' · eb67cdb3
      Paolo Abeni authored 
      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.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      eb67cdb3
    • Justin Chen's avatar
      net: bcmasp: Remove phy_{suspend/resume} · 4494c10e
      Justin Chen authored 
      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: default avatarJustin Chen <justin.chen@broadcom.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      4494c10e
    • Justin Chen's avatar
      net: bcmasp: Bring up unimac after PHY link up · dfd222e2
      Justin Chen authored 
      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: default avatarJustin Chen <justin.chen@broadcom.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      dfd222e2
    • Christian Marangi's avatar
      net: phy: qcom: at803x: fix kernel panic with at8031_probe · 6a4aee27
      Christian Marangi authored 
      

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: default avatarWilliam 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: default avatarChristian Marangi <ansuelsmth@gmail.com>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240325190621.2665-1-ansuelsmth@gmail.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      6a4aee27
    • Paolo Abeni's avatar
      Merge tag 'nf-24-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf · 005e528c
      Paolo Abeni authored 
      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.org


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      005e528c
    • Paolo Abeni's avatar
      Merge tag 'for-net' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf · 7e6f4b2a
      Paolo Abeni authored 
      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.com


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
      7e6f4b2a
    • Linus Torvalds's avatar
      Merge tag 'erofs-for-6.9-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs · 8d025e20
      Linus Torvalds authored 
      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
      8d025e20
    • Kuniyuki Iwashima's avatar
      netfilter: arptables: Select NETFILTER_FAMILY_ARP when building arp_tables.c · 15fba562
      Kuniyuki Iwashima authored 
      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-g537c2e91d354 #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: default avatarsyzkaller <syzkaller@googlegroups.com>
Signed-off-by: default avatarKuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: default avatarSimon Horman <horms@kernel.org>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      15fba562
    • Pablo Neira Ayuso's avatar
      netfilter: nf_tables: skip netdev hook unregistration if table is dormant · 216e7bf7
      Pablo Neira Ayuso authored 
      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: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      216e7bf7
    • Pablo Neira Ayuso's avatar
      netfilter: nf_tables: reject table flag and netdev basechain updates · 1e1fb6f0
      Pablo Neira Ayuso authored 
      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: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      1e1fb6f0
    • Pablo Neira Ayuso's avatar
      netfilter: nf_tables: reject destroy command to remove basechain hooks · b32ca27f
      Pablo Neira Ayuso authored 
      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: default avatarPablo Neira Ayuso <pablo@netfilter.org>
      b32ca27f
    • Jakub Kicinski's avatar
      Merge tag 'wireless-2024-03-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless · 56d2f48e
      Jakub Kicinski authored 
      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.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
      56d2f48e
    • Linus Torvalds's avatar
      Merge tag '9p-fixes-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs · 4076fa16
      Linus Torvalds authored 
      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
      4076fa16
    • Linus Torvalds's avatar
      Merge tag 'for-6.9-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · 400dd456
      Linus Torvalds authored 
      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
      400dd456
    • Linus Torvalds's avatar
      Merge tag 'mm-hotfixes-stable-2024-03-27-11-25' of... · dc189b8e
      Linus Torvalds authored 
      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
  ...
      dc189b8e
    • Matt Bobrowski's avatar
      bpf: update BPF LSM designated reviewer list · 4dd65107
      Matt Bobrowski authored 
      

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: default avatarMatt Bobrowski <mattbobrowski@google.com>
Acked-by: default avatarKP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/r/ZgMhWF_egdYF8t4D@google.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      4dd65107
    • Linus Torvalds's avatar
      Merge tag 'probes-fixes-v6.9-rc1' of... · 96249052
      Linus Torvalds authored 
      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
      96249052
    • Linus Torvalds's avatar
      Merge tag 'execve-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux · f4a43291
      Linus Torvalds authored 
      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
      f4a43291
    • Alexei Starovoitov's avatar
      Merge branch 'check-bloom-filter-map-value-size' · a4e02d6b
      Alexei Starovoitov authored 
      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.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      a4e02d6b
    • Andrei Matei's avatar
      bpf: Protect against int overflow for stack access size · ecc6a210
      Andrei Matei authored 
      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: default avatar <syzbot+33f4297b5f927648741a@syzkaller.appspotmail.com>
Reported-by: default avatar <syzbot+aafd0513053a1cbf52ef@syzkaller.appspotmail.com>
Closes: https://lore.kernel.org/bpf/CAADnVQLORV5PT0iTAhRER+iLBTkByCYNBYyvBSgjN1T31K+gOw@mail.gmail.com/


Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Signed-off-by: default avatarAndrei Matei <andreimatei1@gmail.com>
Link: https://lore.kernel.org/r/20240327024245.318299-3-andreimatei1@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      ecc6a210
    • Andrei Matei's avatar
      bpf: Check bloom filter map value size · a8d89feb
      Andrei Matei authored 
      

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: default avatarAndrei Matei <andreimatei1@gmail.com>
Acked-by: default avatarAndrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240327024245.318299-2-andreimatei1@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      a8d89feb
    • Linus Torvalds's avatar
      Fix build errors due to new UIO_MEM_DMA_COHERENT mess · 498e47cd
      Linus Torvalds authored 
      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: default avatarGuenter 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: default avatarLinus Torvalds <torvalds@linuxfoundation.org>
      498e47cd
    • Linus Torvalds's avatar
      Fix memory leak in posix_clock_open() · 5b4cdd9c
      Linus Torvalds authored 
      

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: default avatarRohit Keshri <rkeshri@redhat.com>
Acked-by: default avatarOleg 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: default avatarLinus Torvalds <torvalds@linuxfoundation.org>
      5b4cdd9c
  5. Mar 27, 2024