5219 Commits
Author SHA1 Message Date
Linus Torvalds f0e77c598e Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:

 - Fix bpf_throw() and global subprog combination (Kumar Kartikeya
   Dwivedi)

 - Fix out of bounds access in BPF interpreter (Yazhou Tang)

 - Fix potential out of bounds access in inner per-cpu array map
   (Guannan Wang)

 - Reject NULL data/sig in bpf_verify_pkcs7_signature (KP Singh)

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  libbpf: fix off-by-one in emit_signature_match jump offset
  bpf: Reject NULL data/sig in bpf_verify_pkcs7_signature
  selftests/bpf: Cover global subprog exception leaks
  bpf: Check global subprog exception paths
  bpf: make bpf_session_is_return() reference optional
  bpf: Use array_map_meta_equal for percpu array inner map replacement
  selftests/bpf: Add test for large offset bpf-to-bpf call
  bpf: Fix s16 truncation for large bpf-to-bpf call offsets
  bpf: Fix out-of-bounds read in bpf_patch_call_args()
2026-05-24 09:53:17 -07:00
Xingwang XiangandJakub Kicinski 33644bd38a selftests/bpf: add regression test for ktls+sockmap verdict UAF
Test the scenario where a socket is inserted into a sockmap with a
BPF_SK_SKB_VERDICT program before TLS RX is configured.  Previously
sk_psock_verdict_data_ready() would call tcp_read_skb() and drain the
receive queue without advancing copied_seq, causing tls_decrypt_sg()
to walk a dangling frag_list pointer (use-after-free).

The test drives the full vulnerable sequence and verifies that after
the fix recv() returns the correct decrypted data.

Signed-off-by: Xingwang Xiang <v3rdant.xiang@gmail.com>
Link: https://patch.msgid.link/20260517145630.20521-3-v3rdant.xiang@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-20 17:23:56 -07:00
KP SinghandKumar Kartikeya Dwivedi 49b18315be bpf: Reject NULL data/sig in bpf_verify_pkcs7_signature
__bpf_dynptr_data() can return NULL (FILE dynptrs, any non-contiguous
backing). bpf_verify_pkcs7_signature() forwards the pointer to
verify_pkcs7_signature() unchecked, causing a NULL deref in
asn1_ber_decoder() reachable from a sleepable BPF LSM at lsm.s/bpf.

NULL-check both pointers and reject with -EINVAL. Mirrors the guards
already in kernel/bpf/crypto.c.

Fixes: 865b0566d8 ("bpf: Add bpf_verify_pkcs7_signature() kfunc")
Reported-by: Xianrui Dong <dongxianrui1@gmail.com>
Signed-off-by: KP Singh <kpsingh@kernel.org>
Reviewed-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20260520024059.313468-1-kpsingh@kernel.org
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
2026-05-20 05:12:05 +02:00
Kumar Kartikeya DwivediandAlexei Starovoitov 511a5db3c9 selftests/bpf: Cover global subprog exception leaks
Add a verifier failure case where the caller holds a reference across a
global subprog call that may throw. The program must be rejected because
the exceptional path would skip the caller's reference release.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260517075530.3461166-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-17 11:15:05 -07:00
Guannan WangandAlexei Starovoitov 5939801753 bpf: Use array_map_meta_equal for percpu array inner map replacement
percpu_array_map_ops.map_meta_equal points to the generic
bpf_map_meta_equal(), which does not compare max_entries.  When a
percpu array serves as an inner map, replacing it with one that has
fewer max_entries bypasses the check.  Since percpu_array_map_gen_lookup()
inlines the original template's index_mask as a JIT immediate, a lookup
on the replacement map can access pptrs[] out of bounds.

Point percpu_array_map_ops.map_meta_equal to array_map_meta_equal(),
which already enforces the max_entries equality check.

Add a selftest to verify that replacing a percpu array inner map with
a differently-sized one is rejected.

Fixes: db69718b8e ("bpf: inline bpf_map_lookup_elem() for PERCPU_ARRAY maps")
Signed-off-by: Guannan Wang <wgnbuaa@gmail.com>
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Link: https://lore.kernel.org/r/20260514074454.77491-1-wgnbuaa@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-14 08:18:50 -07:00
Yazhou TangandAlexei Starovoitov 344a00712c selftests/bpf: Add test for large offset bpf-to-bpf call
Add a selftest to verify the verifier and JIT behavior when handling
bpf-to-bpf calls with relative jump offsets exceeding the s16 boundary.

The test utilizes an inline assembly block with ".rept 32765" to generate
a massive dummy subprogram. By placing this padding between the main
program and the target subprogram, it forces the verifier to process a
bpf-to-bpf call where the imm field exceeds the s16 range.

- When JIT is enabled, it asserts that the program is successfully loaded
  and executes correctly to return the expected value. Since the fix
  does not change the JIT behavior, the test passes whether the fix is
  applied or not.
- When JIT is disabled, it also asserts that the program is successfully
  loaded and executes correctly to return the expected value 3.
  - Before the fix, the verifier rewrites the call instruction with a
    truncated offset (here 32768 -> -32768) and lets it pass. When the
    program is executed, the call instruction will go to a wrong target
    (the landing pad) instead of the intended subprogram, then return -1
    and fail.
  - After the fix, the verifier correctly handles the large offset and
    allows it to pass. The program then executes correctly to return the
    expected value 3.

Co-developed-by: Tianci Cao <ziye@zju.edu.cn>
Signed-off-by: Tianci Cao <ziye@zju.edu.cn>
Co-developed-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Signed-off-by: Shenghao Yuan <shenghaoyuan0928@163.com>
Signed-off-by: Yazhou Tang <tangyazhou518@outlook.com>
Acked-by: Xu Kuohai <xukuohai@huawei.com>
Link: https://lore.kernel.org/r/20260506094714.419842-4-tangyazhou@zju.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-05-11 08:27:02 -07:00
Linus Torvalds 515186b7be Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:

 - Fix sk_local_storage diag dump via netlink (Amery Hung)

 - Fix off-by-one in arena direct-value access (Junyoung Jang)

 - Reject TCP_NODELAY in bpf-tcp congestion control (KaFai Wan)

 - Fix type confusion in bpf_*_sock() (Kuniyuki Iwashima)

 - Reject TX-only AF_XDP sockets (Linpu Yu)

 - Don't run arg-tracking analysis twice on main subprog (Paul Chaignon)

 - Fix NULL pointer dereference in bpf_sk_storage_clone and fib lookup
   (Weiming Shi)

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Fix off-by-one boundary validation in arena direct-value access
  xskmap: reject TX-only AF_XDP sockets
  bpf: Don't run arg-tracking analysis twice on main subprog
  bpf: Free reuseport cBPF prog after RCU grace period.
  bpf: tcp: Fix type confusion in sol_tcp_sockopt().
  bpf: tcp: Fix type confusion in bpf_skc_to_tcp6_sock().
  bpf: tcp: Fix type confusion in bpf_skc_to_tcp_sock().
  mptcp: bpf: Fix type confusion in bpf_mptcp_sock_from_subflow()
  selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
  bpf: tcp: Fix type confusion in bpf_tcp_sock().
  tools/headers: Regenerate stddef.h to fix BPF selftests
  bpf: Fix sk_local_storage diag dumping uninitialized special fields
  bpf: Fix NULL pointer dereference in bpf_skb_fib_lookup()
  sockmap: Fix sk_psock_drop() race vs sock_map_{unhash,close,destroy}().
  bpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths
  selftests/bpf: Verify bpf-tcp-cc rejects TCP_NODELAY
  selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks
  bpf: Reject TCP_NODELAY in bpf-tcp-cc
  bpf: Reject TCP_NODELAY in TCP header option callbacks
2026-05-09 18:42:54 -07:00
Kuniyuki IwashimaandMartin KaFai Lau d73549b8bb selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
Let's extend sockopt_sk.c to cover bpf_tcp_sock() for the
wrong socket type.

Before:
  # ./test_progs -t sockopt_sk
  [  151.948613] ==================================================================
  [  151.951376] BUG: KASAN: slab-out-of-bounds in sol_tcp_sockopt+0xc7/0x8e0
  [  151.954159] Read of size 8 at addr ffff88801083d760 by task test_progs/1259
  ...
  run_test:FAIL:getsetsockopt unexpected error: -1 (errno 0)
  #427     sockopt_sk:FAIL

After:
  #427     sockopt_sk:OK

While at it, missing free() is fixed up.

Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260504210610.180150-3-kuniyu@google.com
2026-05-08 11:38:08 -07:00
Linus Torvalds ff57d59200 Merge tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:

 - Adjust build infrastructure for 32BIT/64BIT

 - Add HIGHMEM (PKMAP and FIX_KMAP) support

 - Show and handle CPU vulnerabilites correctly

 - Batch the icache maintenance for jump_label

 - Add more atomic instructions support for BPF JIT

 - Add more features (e.g. fsession) support for BPF trampoline

 - Some bug fixes and other small changes

* tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (21 commits)
  selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch
  LoongArch: BPF: Add fsession support for trampolines
  LoongArch: BPF: Introduce emit_store_stack_imm64() helper
  LoongArch: BPF: Support up to 12 function arguments for trampoline
  LoongArch: BPF: Support small struct arguments for trampoline
  LoongArch: BPF: Open code and remove invoke_bpf_mod_ret()
  LoongArch: BPF: Support load-acquire and store-release instructions
  LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions
  LoongArch: BPF: Add the default case in emit_atomic() and rename it
  LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR
  LoongArch: Batch the icache maintenance for jump_label
  LoongArch: Add flush_icache_all()/local_flush_icache_all()
  LoongArch: Add spectre boundry for syscall dispatch table
  LoongArch: Show CPU vulnerabilites correctly
  LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist
  LoongArch: Use get_random_canary() for stack canary init
  LoongArch: Improve the logging of disabling KASLR
  LoongArch: Align FPU register state to 32 bytes
  LoongArch: Handle CONFIG_32BIT in syscall_get_arch()
  LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support
  ...
2026-04-24 09:54:45 -07:00
Linus Torvalds e728258deb Merge tag 'net-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull  networking fixes from Jakub Kicinski:
 "Including fixes from Netfilter.

  Steady stream of fixes. Last two weeks feel comparable to the two
  weeks before the merge window. Lots of AI-aided bug discovery. A newer
  big source is Sashiko/Gemini (Roman Gushchin's system), which points
  out issues in existing code during patch review (maybe 25% of fixes
  here likely originating from Sashiko). Nice thing is these are often
  fixed by the respective maintainers, not drive-bys.

  Current release - new code bugs:

   - kconfig: MDIO_PIC64HPSC should depend on ARCH_MICROCHIP

  Previous releases - regressions:

   - add async ndo_set_rx_mode and switch drivers which we promised to
     be called under the per-netdev mutex to it

   - dsa: remove duplicate netdev_lock_ops() for conduit ethtool ops

   - hv_sock: report EOF instead of -EIO for FIN

   - vsock/virtio: fix MSG_PEEK calculation on bytes to copy

  Previous releases - always broken:

   - ipv6: fix possible UAF in icmpv6_rcv()

   - icmp: validate reply type before using icmp_pointers

   - af_unix: drop all SCM attributes for SOCKMAP

   - netfilter: fix a number of bugs in the osf (OS fingerprinting)

   - eth: intel: fix timestamp interrupt configuration for E825C

  Misc:

   - bunch of data-race annotations"

* tag 'net-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (148 commits)
  rxrpc: Fix error handling in rxgk_extract_token()
  rxrpc: Fix re-decryption of RESPONSE packets
  rxrpc: Fix rxrpc_input_call_event() to only unshare DATA packets
  rxrpc: Fix missing validation of ticket length in non-XDR key preparsing
  rxgk: Fix potential integer overflow in length check
  rxrpc: Fix conn-level packet handling to unshare RESPONSE packets
  rxrpc: Fix potential UAF after skb_unshare() failure
  rxrpc: Fix rxkad crypto unalignment handling
  rxrpc: Fix memory leaks in rxkad_verify_response()
  net: rds: fix MR cleanup on copy error
  m68k: mvme147: Make me the maintainer
  net: txgbe: fix firmware version check
  selftests/bpf: check epoll readiness during reuseport migration
  tcp: call sk_data_ready() after listener migration
  vhost_net: fix sleeping with preempt-disabled in vhost_net_busy_poll()
  ipv6: Cap TLV scan in ip6_tnl_parse_tlv_enc_lim
  tipc: fix double-free in tipc_buf_append()
  llc: Return -EINPROGRESS from llc_ui_connect()
  ipv4: icmp: validate reply type before using icmp_pointers
  selftests/net: packetdrill: cover RFC 5961 5.2 challenge ACK on both edges
  ...
2026-04-23 16:50:42 -07:00
Zhenzhong WuandJakub Kicinski c01cfc4886 selftests/bpf: check epoll readiness during reuseport migration
Inside migrate_dance(), add epoll checks around shutdown() to
verify that the target listener is not ready before shutdown()
and becomes ready immediately after shutdown() triggers migration.

Cover TCP_ESTABLISHED and TCP_SYN_RECV. Exclude TCP_NEW_SYN_RECV
as it depends on later handshake completion.

Suggested-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Zhenzhong Wu <jt26wzz@gmail.com>
Link: https://patch.msgid.link/20260422024554.130346-3-jt26wzz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-04-23 11:54:44 -07:00
Tiezhu YangandHuacai Chen 7939f96f26 selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch
In order to do the following load-acquire and store-release tests on
LoongArch:

  sudo ./test_progs -t verifier_load_acquire
  sudo ./test_progs -t verifier_store_release
  sudo ./test_progs -t verifier_precision/bpf_load_acquire
  sudo ./test_progs -t verifier_precision/bpf_store_release
  sudo ./test_progs -t compute_live_registers/atomic_load_acq_store_rel

It needs to enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch.

Acked-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2026-04-23 12:49:46 +08:00
KaFai WanandMartin KaFai Lau 2c7e33f1fc selftests/bpf: Verify bpf-tcp-cc rejects TCP_NODELAY
Add a bpf_tcp_ca selftest for the TCP_NODELAY restriction in
bpf-tcp-cc.

Update bpf_cubic to exercise init() and cwnd_event_tx_start(),
and check that both callbacks reject bpf_setsockopt(TCP_NODELAY)
with -EOPNOTSUPP.

Signed-off-by: KaFai Wan <kafai.wan@linux.dev>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20260421155804.135786-5-kafai.wan@linux.dev
2026-04-22 12:59:49 -07:00
KaFai WanandMartin KaFai Lau 52b6b53349 selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks
Add a sockops selftest for the TCP_NODELAY restriction in
BPF_SOCK_OPS_HDR_OPT_LEN_CB and BPF_SOCK_OPS_WRITE_HDR_OPT_CB.

With BPF_SOCK_OPS_WRITE_HDR_OPT_CB_FLAG enabled,
bpf_setsockopt(TCP_NODELAY) returns -EOPNOTSUPP from
BPF_SOCK_OPS_HDR_OPT_LEN_CB and BPF_SOCK_OPS_WRITE_HDR_OPT_CB, avoiding
unbounded recursion and kernel stack overflow.

Other cases continue to work as before, including
BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB.

Signed-off-by: KaFai Wan <kafai.wan@linux.dev>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Link: https://patch.msgid.link/20260421155804.135786-4-kafai.wan@linux.dev
2026-04-22 12:59:49 -07:00
Yihan DingandAlexei Starovoitov 4198ff31ed selftests/bpf: cover UTF-8 trace_printk output
Extend trace_printk coverage to verify that UTF-8 literal text is
emitted successfully and that '%' parsing still rejects non-ASCII
bytes once format parsing starts.

Use an explicitly invalid format string for the negative case so the
ASCII-only parser expectation is visible from the test code itself.

Signed-off-by: Yihan Ding <dingyihan@uniontech.com>
Acked-by: Paul Chaignon <paul.chaignon@gmail.com>
Link: https://lore.kernel.org/r/20260416120142.1420646-3-dingyihan@uniontech.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-16 15:53:32 -07:00
Yihan DingandAlexei Starovoitov b960430ea8 bpf: allow UTF-8 literals in bpf_bprintf_prepare()
bpf_bprintf_prepare() only needs ASCII parsing for conversion
specifiers. Plain text can safely carry bytes >= 0x80, so allow
UTF-8 literals outside '%' sequences while keeping ASCII control
bytes rejected and format specifiers ASCII-only.

This keeps existing parsing rules for format directives unchanged,
while allowing helpers such as bpf_trace_printk() to emit UTF-8
literal text.

Update test_snprintf_negative() in the same commit so selftests keep
matching the new plain-text vs format-specifier split during bisection.

Fixes: 48cac3f4a9 ("bpf: Implement formatted output helpers with bstr_printf")
Signed-off-by: Yihan Ding <dingyihan@uniontech.com>
Acked-by: Paul Chaignon <paul.chaignon@gmail.com>
Link: https://lore.kernel.org/r/20260416120142.1420646-2-dingyihan@uniontech.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-16 15:53:32 -07:00
Mykyta YatsenkoandAlexei Starovoitov fcd11ff8bd selftests/bpf: Reject scalar store into kptr slot
Verify that the verifier rejects a direct scalar write to a kptr map
value slot without crashing.

Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Link: https://lore.kernel.org/r/20260416-kptr_crash-v1-2-5589356584b4@meta.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-16 15:20:27 -07:00
Michal LuczajandMartin KaFai Lau 997b8483d4 selftests/bpf: Extend bpf_iter_unix to attempt deadlocking
Updating a sockmap from a unix iterator prog may lead to a deadlock.
Piggyback on the original selftest.

Signed-off-by: Michal Luczaj <mhal@rbox.co>
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20260414-unix-proto-update-null-ptr-deref-v4-3-2af6fe97918e@rbox.co
2026-04-15 17:22:55 -07:00
Eduard ZingermanandAlexei Starovoitov 969fb456ff selftests/bpf: verify kallsyms entries for token-loaded subprograms
Add a test that loads an XDP program with a global subprogram using a
BPF token from a user namespace, then verifies that both the main
program and the subprogram appear in /proc/kallsyms.

This exercises the bpf_prog_kallsyms_add() path for subprograms and
would have caught the missing aux->token copy in bpf_jit_subprogs().

load_kallsyms_local() filters out kallsyms with zero addresses.
For a process with limited capabilities to read kallsym addresses the
following sysctl variables have to be set to zero:
- /proc/sys/kernel/perf_event_paranoid
- /proc/sys/kernel/kptr_restrict
Set these variables using sysctl_set() utility function extracted from
unpriv_bpf_disabled.c to a separate c/header.
Since the test modifies global system state, mark it as serial.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260415-subprog-token-fix-v4-2-9bd000e8b068@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 16:46:47 -07:00
Amery HungandAlexei Starovoitov b4b0233730 selftests/bpf: Test small task local data allocation
Make sure task local data is working correctly for different allocation
sizes. Existing task local data selftests allocate the maximum amount of
data possible but miss the garbage data issue when only small amount of
data is allocated. Therefore, test small data allocations as well.

Signed-off-by: Amery Hung <ameryhung@gmail.com>
Link: https://lore.kernel.org/r/20260413190259.358442-4-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 12:10:20 -07:00
Amery HungandAlexei Starovoitov 615e55a241 selftests/bpf: Fix tld_get_data() returning garbage data
BPF side tld_get_data() currently may return garbage when tld_data_u is
not aligned to page_size. This can happen when small amount of memory
is allocated for tld_data_u. The misalignment is supposed to be allowed
and the BPF side will use tld_data_u->start to reference the tld_data_u
in a page. However, since "start" is within tld_data_u, there is no way
to know the correct "start" in the first place. As a result, BPF
programs will see garbage data. The selftest did not catch this since
it tries to allocate the maximum amount of data possible (i.e., a page)
such that tld_data_u->start is always correct.

Fix it by moving tld_data_u->start to tld_data_map->start. The original
field is now renamed as unused instead of removing it because BPF side
tld_get_data() views off = 0 returned from tld_fetch_key() as
uninitialized.

Signed-off-by: Amery Hung <ameryhung@gmail.com>
Link: https://lore.kernel.org/r/20260413190259.358442-3-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 12:10:20 -07:00
Amery HungandAlexei Starovoitov 36bf7beb9d selftests/bpf: Prevent allocating data larger than a page
Fix a bug in the task local data library that may allocate more than a
a page for tld_data_u. This may happen when users set a too large
TLD_DYN_DATA_SIZE, so check it when creating dynamic TLD fields and fix
the corresponding selftest.

Signed-off-by: Amery Hung <ameryhung@gmail.com>
Link: https://lore.kernel.org/r/20260413190259.358442-2-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 12:10:20 -07:00
Eduard ZingermanandAlexei Starovoitov d97cc8fc99 selftests/bpf: arg tracking for imprecise/multi-offset BPF_ST/STX
Add test cases for clear_stack_for_all_offs and dst_is_local_fp
handling of multi-offset and ARG_IMPRECISE stack pointers:

- st_imm_join_with_multi_off: BPF_ST through multi-offset dst should
  join at_stack with none instead of overwriting both candidate slots.
- st_imm_join_with_imprecise_off: BPF_ST through offset-imprecise dst
  should join at_stack with none instead of clearing all slots.
- st_imm_join_with_single_off: a canary checking that BPF_ST with a
  known offset overwrites slot instead of joining.
- imprecise_dst_spill_join: BPF_STX through ARG_IMPRECISE dst should
  be recognized as a local spill and join at_stack with the written
  value.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260413-stacklive-fixes-v2-2-398e126e5cf3@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 08:40:48 -07:00
Shung-Hsi YuandAlexei Starovoitov 813f336269 selftests/bpf: Fix timer_start_deadlock failure due to hrtimer change
Since commit f2e388a019 ("hrtimer: Reduce trace noise in hrtimer_start()"),
hrtimer_cancel tracepoint is no longer called when a hrtimer is re-armed. So
instead of a hrtimer_cancel followed by hrtimer_start tracepoint events, there
is now only a since hrtimer_start tracepoint event with the new was_armed field
set to 1, to indicated that the hrtimer was previously armed.

Update timer_start_deadlock accordingly so it traces hrtimer_start tracepoint
instead, with was_armed used as guard.

Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Tested-by: Mykyta Yatsenko <yatsenko@meta.com>
Acked-by: Mykyta Yatsenko <yatsenko@meta.com>
Link: https://lore.kernel.org/r/20260415120329.129192-1-shung-hsi.yu@suse.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-04-15 08:25:04 -07:00
Linus Torvalds 91a4855d6c Merge tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Support HW queue leasing, allowing containers to be granted access
     to HW queues for zero-copy operations and AF_XDP

   - Number of code moves to help the compiler with inlining. Avoid
     output arguments for returning drop reason where possible

   - Rework drop handling within qdiscs to include more metadata about
     the reason and dropping qdisc in the tracepoints

   - Remove the rtnl_lock use from IP Multicast Routing

   - Pack size information into the Rx Flow Steering table pointer
     itself. This allows making the table itself a flat array of u32s,
     thus making the table allocation size a power of two

   - Report TCP delayed ack timer information via socket diag

   - Add ip_local_port_step_width sysctl to allow distributing the
     randomly selected ports more evenly throughout the allowed space

   - Add support for per-route tunsrc in IPv6 segment routing

   - Start work of switching sockopt handling to iov_iter

   - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid
     buffer size drifting up

   - Support MSG_EOR in MPTCP

   - Add stp_mode attribute to the bridge driver for STP mode selection.
     This addresses concerns about call_usermodehelper() usage

   - Remove UDP-Lite support (as announced in 2023)

   - Remove support for building IPv6 as a module. Remove the now
     unnecessary function calling indirection

  Cross-tree stuff:

   - Move Michael MIC code from generic crypto into wireless, it's
     considered insecure but some WiFi networks still need it

  Netfilter:

   - Switch nft_fib_ipv6 module to no longer need temporary dst_entry
     object allocations by using fib6_lookup() + RCU.

     Florian W reports this gets us ~13% higher packet rate

   - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and
     switch the service tables to be per-net. Convert some code that
     walks the service lists to use RCU instead of the service_mutex

   - Add more opinionated input validation to lower security exposure

   - Make IPVS hash tables to be per-netns and resizable

  Wireless:

   - Finished assoc frame encryption/EPPKE/802.1X-over-auth

   - Radar detection improvements

   - Add 6 GHz incumbent signal detection APIs

   - Multi-link support for FILS, probe response templates and client
     probing

   - New APIs and mac80211 support for NAN (Neighbor Aware Networking,
     aka Wi-Fi Aware) so less work must be in firmware

  Driver API:

   - Add numerical ID for devlink instances (to avoid having to create
     fake bus/device pairs just to have an ID). Support shared devlink
     instances which span multiple PFs

   - Add standard counters for reporting pause storm events (implement
     in mlx5 and fbnic)

   - Add configuration API for completion writeback buffering (implement
     in mana)

   - Support driver-initiated change of RSS context sizes

   - Support DPLL monitoring input frequency (implement in zl3073x)

   - Support per-port resources in devlink (implement in mlx5)

  Misc:

   - Expand the YAML spec for Netfilter

  Drivers

   - Software:
      - macvlan: support multicast rx for bridge ports with shared
        source MAC address
      - team: decouple receive and transmit enablement for IEEE 802.3ad
        LACP "independent control"

   - Ethernet high-speed NICs:
      - nVidia/Mellanox:
         - support high order pages in zero-copy mode (for payload
           coalescing)
         - support multiple packets in a page (for systems with 64kB
           pages)
      - Broadcom 25-400GE (bnxt):
         - implement XDP RSS hash metadata extraction
         - add software fallback for UDP GSO, lowering the IOMMU cost
      - Broadcom 800GE (bnge):
         - add link status and configuration handling
         - add various HW and SW statistics
      - Marvell/Cavium:
         - NPC HW block support for cn20k
      - Huawei (hinic3):
         - add mailbox / control queue
         - add rx VLAN offload
         - add driver info and link management

   - Ethernet NICs:
      - Marvell/Aquantia:
         - support reading SFP module info on some AQC100 cards
      - Realtek PCI (r8169):
         - add support for RTL8125cp
      - Realtek USB (r8152):
         - support for the RTL8157 5Gbit chip
         - add 2500baseT EEE status/configuration support

   - Ethernet NICs embedded and off-the-shelf IP:
      - Synopsys (stmmac):
         - cleanup and reorganize SerDes handling and PCS support
         - cleanup descriptor handling and per-platform data
         - cleanup and consolidate MDIO defines and handling
         - shrink driver memory use for internal structures
         - improve Tx IRQ coalescing
         - improve TCP segmentation handling
         - add support for Spacemit K3
      - Cadence (macb):
         - support PHYs that have inband autoneg disabled with GEM
         - support IEEE 802.3az EEE
         - rework usrio capabilities and handling
      - AMD (xgbe):
         - improve power management for S0i3
         - improve TX resilience for link-down handling

   - Virtual:
      - Google cloud vNIC:
         - support larger ring sizes in DQO-QPL mode
         - improve HW-GRO handling
         - support UDP GSO for DQO format
      - PCIe NTB:
         - support queue count configuration

   - Ethernet PHYs:
      - automatically disable PHY autonomous EEE if MAC is in charge
      - Broadcom:
         - add BCM84891/BCM84892 support
      - Micrel:
         - support for LAN9645X internal PHY
      - Realtek:
         - add RTL8224 pair order support
         - support PHY LEDs on RTL8211F-VD
         - support spread spectrum clocking (SSC)
      - Maxlinear:
         - add PHY-level statistics via ethtool

   - Ethernet switches:
      - Maxlinear (mxl862xx):
         - support for bridge offloading
         - support for VLANs
         - support driver statistics

   - Bluetooth:
      - large number of fixes and new device IDs
      - Mediatek:
         - support MT6639 (MT7927)
         - support MT7902 SDIO

   - WiFi:
      - Intel (iwlwifi):
         - UNII-9 and continuing UHR work
      - MediaTek (mt76):
         - mt7996/mt7925 MLO fixes/improvements
         - mt7996 NPU support (HW eth/wifi traffic offload)
      - Qualcomm (ath12k):
         - monitor mode support on IPQ5332
         - basic hwmon temperature reporting
         - support IPQ5424
      - Realtek:
         - add USB RX aggregation to improve performance
         - add USB TX flow control by tracking in-flight URBs

   - Cellular:
      - IPA v5.2 support"

* tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits)
  net: pse-pd: fix kernel-doc function name for pse_control_find_by_id()
  wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit
  wireguard: allowedips: remove redundant space
  tools: ynl: add sample for wireguard
  wireguard: allowedips: Use kfree_rcu() instead of call_rcu()
  MAINTAINERS: Add netkit selftest files
  selftests/net: Add additional test coverage in nk_qlease
  selftests/net: Split netdevsim tests from HW tests in nk_qlease
  tools/ynl: Make YnlFamily closeable as a context manager
  net: airoha: Add missing PPE configurations in airoha_ppe_hw_init()
  net: airoha: Fix VIP configuration for AN7583 SoC
  net: caif: clear client service pointer on teardown
  net: strparser: fix skb_head leak in strp_abort_strp()
  net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete()
  selftests/bpf: add test for xdp_master_redirect with bond not up
  net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master
  net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration
  sctp: disable BH before calling udp_tunnel_xmit_skb()
  sctp: fix missing encap_port propagation for GSO fragments
  net: airoha: Rely on net_device pointer in ETS callbacks
  ...
2026-04-14 18:36:10 -07:00