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This test opens a server and client, enters a new cgroup, attach a
cgroup_skb program on egress and calls the bpf_icmp_send function from
the client egress so that an ICMP unreach control message is sent back
to the client. It then fetches the message from the error queue to
confirm the correct ICMP unreach code has been sent.
Note that, for the client, we have to connect in non-blocking mode to
let the test execute faster. Otherwise, we need to wait for the TCP
three-way handshake to timeout in the kernel before reading the errno.
Also note that we don't set IP_RECVERR on the socket in
connect_to_fd_nonblock since the error will be transferred anyway in our
test because the connection is rejected at the beginning of the TCP
handshake. See in net/ipv4/tcp_ipv4.c:tcp_v4_err for more details.
Signed-off-by: Mahe Tardy <mahe.tardy@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jordan Rife <jordan@jrife.io>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://lore.kernel.org/bpf/20260709144900.245904-3-mahe.tardy@gmail.com
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Cross-merge networking fixes after downstream PR (net-7.2-rc3).
Conflicts:
tools/testing/selftests/net/lib.sh
dd6a23bac306b ("selftests: net: make busywait timeout clock portable")
895bad9cc4cec ("selftests: net: make busywait timeout clock portable")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add the end to end testing infrastructure required to verify the
liveupdate feature. This includes a custom init process, a test
orchestration script, and a batch runner.
The framework consists of:
init.c:
A lightweight init process that manages the kexec lifecycle.
It mounts necessary filesystems, determines the current execution
stage (1 or 2) via the kernel command line, and handles the
kexec_file_load() sequence to transition between kernels.
vmtest.sh:
The primary KTAP-compliant test driver. It handles:
- Kernel configuration merging and building.
- Cross-compilation detection for x86_64 and arm64.
- Generation of the initrd containing the test binary and init.
- QEMU execution with automatic accelerator detection (KVM, HVF,
or TCG).
run-vmtests.sh:
A wrapper that runs vmtest.sh for each LUO test across supported
architectures, providing a summary of pass/fail/skip results.
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Co-developed-by: Jordan Richards <jordanrichards@google.com>
Signed-off-by: Jordan Richards <jordanrichards@google.com>
Co-developed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://patch.msgid.link/20260626-luo-vmtest-v0-v4-1-e7d3111cd5b3@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
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USEC_PER_SEC defines"
This partially reverts commit 80fa614e2fbc ("selftests: timers: Remove
local NSEC_PER_SEC and USEC_PER_SEC defines").
The original commit removed local definitions of NSEC_PER_SEC and
USEC_PER_SEC in favor of including <include/vdso/time64.h>. However,
NSEC_PER_SEC in vdso/time64.h is defined as 1000000000L, which is
32-bit on 32-bit architectures. This causes integer overflow warnings
in several timer tests when doing arithmetic like NSEC_PER_SEC * 10 on
32-bit systems.
To fix this, restore the local definitions of NSEC_PER_SEC and
USEC_PER_SEC in the test files, but use "LL" suffix consistently
(1000000000LL and 1000000LL) to ensure 64-bit arithmetic and avoid
overflows.
We keep the cleanup from the original commit that renamed plural
definitions (NSECS_PER_SEC/USECS_PER_SEC) to singular ones in
posix_timers.c, but we now define them locally there as well.
This also removes the dependency of the selftests on the internal
kernel header <include/vdso/time64.h>.
Signed-off-by: Wake Liu <wakel@google.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Acked-by: John Stultz <jstultz@google.com>
Link: https://patch.msgid.link/20260610014721.718362-1-wakel@google.com
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Pull to receive:
db4e9defd2e8 ("sched_ext: Record an error on errno-only sub-enable failure")
49b3378a750c ("sched_ext: Fix premature ops->priv publication in scx_alloc_and_add_sched()")
e6979d05c6a6 ("tools/sched_ext: scx - Fix cmask_subset(), cmask_equal() and cmask_weight()")
for further sub-sched changes and to resolve the conflicts with the
sub-sched updates on for-7.3.
db4e9defd2e8 adds scx_error() to the sub-enable err_disable sink which
for-7.3 moved from ext.c into sub.c. Resolved by applying the fix to
scx_sub_enable_workfn() in sub.c.
49b3378a750c drops RCU_INIT_POINTER() from an scx_alloc_and_add_sched()
unwind label whose body changed with for-7.3's stall_cpus addition.
Resolved by dropping the line from the updated unwind.
Signed-off-by: Tejun Heo <tj@kernel.org>
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In prog_run's run(), the bpf_link is attached early but only destroyed
on the success path. The three SCX_EQ assertions between attach and
destroy expand to a direct 'return SCX_TEST_FAIL', so if any of them
triggers, bpf_link__destroy() is never reached and the BPF scheduler
stays loaded. All subsequent tests then fail to attach because SCX is
not in the DISABLED state.
Convert those assertions to explicit checks that jump to a unified
'out' label which always runs the cleanup, matching the pattern used
in cyclic_kick_wait.c.
Fixes: a5db7817af78 ("sched_ext: Add selftests")
Signed-off-by: Liang Luo <luoliang@kylinos.cn>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Add a load-failure test to the kfunc_call suite using the existing
bpf_kfunc_call_test_get_rdwr_mem() test kfunc. Its rdwr_buf_size
argument is a const int, so the test uses a 64-bit immediate load in
inline asm to place 2^64 - 192 (0xffffffffffffff40) in the argument
register. The verifier records r0_size from the full 64-bit register
value, and the test asserts that BPF_PROG_LOAD rejects it with
"rdonly/rdwr_buf_size exceeds u32 max".
Signed-off-by: Nicholas Dudar <main.kalliope@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260709155837.1879230-3-main.kalliope@gmail.com
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Add a verifier test where a spilled scalar is filled once via a sign-
extending load (BPF_MEMSX) and once via a zero-extending load (BPF_MEM).
The two destination registers must not share a scalar id.
# LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t verifier_scalar_ids
[...]
#643/1 verifier_scalar_ids/linked_regs_bpf_k:OK
#643/2 verifier_scalar_ids/linked_regs_bpf_x_src:OK
#643/3 verifier_scalar_ids/linked_regs_bpf_x_dst:OK
#643/4 verifier_scalar_ids/linked_regs_broken_link:OK
#643/5 verifier_scalar_ids/precision_many_frames:OK
#643/6 verifier_scalar_ids/precision_stack:OK
#643/7 verifier_scalar_ids/precision_two_ids:OK
#643/8 verifier_scalar_ids/linked_regs_too_many_regs:OK
#643/9 verifier_scalar_ids/linked_regs_broken_link_2:OK
#643/10 verifier_scalar_ids/cjmp_no_linked_regs_trigger:OK
#643/11 verifier_scalar_ids/check_ids_in_regsafe:OK
#643/12 verifier_scalar_ids/check_ids_in_regsafe_2:OK
#643/13 verifier_scalar_ids/no_scalar_id_for_const:OK
#643/14 verifier_scalar_ids/no_scalar_id_for_const32:OK
#643/15 verifier_scalar_ids/ignore_unique_scalar_ids_cur:OK
#643/16 verifier_scalar_ids/ignore_unique_scalar_ids_old:OK
#643/17 verifier_scalar_ids/two_nil_old_ids_one_cur_id:OK
#643/18 verifier_scalar_ids/two_old_ids_one_cur_id:OK
#643/19 verifier_scalar_ids/linked_regs_and_subreg_def:OK
#643/20 verifier_scalar_ids/ldsx_fill_scalar_id_not_shared:OK
#643 verifier_scalar_ids:OK
Summary: 1/20 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter, Bluetooth and batman-adv.
Current release - regressions:
- bluetooth: fix using chan->conn as indication to no remote netdev
Current release - new code bugs:
- netfilter: cap to maximum number of expectation per master on
updates
Previous releases - regressions:
- bluetooth:
- fix UAF of hci_conn_params in add_device_complete
- fix null ptr deref in hci_abort_conn()
- igmp: remove multicast group from hash table on device destruction
- batman-adv: prevent TVLV OOB check overflow
- eth: mlx5/mlx5e:
- fix off-by-one in single-FDB error rollback
- skip peer flow cleanup when LAG seq is unavailable
- fix crashes in dynamic per-channel stats and HV VHCA agent
- eth: mana: Sync page pool RX frags for CPU
Previous releases - always broken:
- netfilter:
- mark malformed IPv6 extension headers for hotdrop
- terminate table name before find_table_lock()
- ipvs: use parsed transport offset in TCP state lookup
- sched: act_pedit: fix TOCTOU heap OOB write in tc offload
- ethtool: rss: fix hfunc and input_xfrm parsing on big endian
- ipv4/ipv6: fix UAF and memory leak in IGMP/MLD
- tls: consume empty data records in tls_sw_read_sock()
- eth:
- octeontx2-af: fix VF bringup affecting PF promiscuous state
- gue: validate REMCSUM private option length"
* tag 'net-7.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (94 commits)
macsec: don't read an unset MAC header in macsec_encrypt()
dibs: loopback: validate offset and size in move_data()
octeontx2-af: fix VF bringup affecting PF promiscuous state
ethtool: rss: Fix hfunc and input_xfrm parsing on big endian
net/mlx5: Fix L3 tunnel entropy refcount leak
net: macb: drop in-flight Tx SKBs on close
net: mana: Sync page pool RX frags for CPU
net: mana: Validate the packet length reported by the NIC
selftests/net: fix EVP_MD_CTX leak in tcp_mmap
ipvs: ensure inner headers in ICMP errors are in headroom
ipvs: use parsed transport offset in SCTP state lookup
ipvs: use parsed transport offset in TCP state lookup
ipvs: pass parsed transport offset to state handlers
netfilter: handle unreadable frags
netfilter: flowtable: support IPIP tunnel with direct xmit
netfilter: flowtable: IPIP tunnel hardware offload is not yet support
netfilter: flowtable: use dst in this direction when pushing IPIP header
netfilter: ipset: allocate the proper memory for the generic hash structure
netfilter: ipset: cleanup the add/del backlog when resize failed
netfilter: ipset: exclude gc when resize is in progress
...
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reduce flakes
Similar to commit 690043b95c18 ("selftests: drv-net: rss: Add
retries to test_rss_key_indir to reduce flakes"), implement the
retry mechanism for test_rss_context_overlap. This gives the test
more attempts to distribute the flow evenly, as the chance of
flow skewing to one queue is high.
Example failures:
# Check failed 5288 < 7000 traffic on main context (1/2): [2727, 2561, 8961, 6648]
not ok 1 rss_ctx.test_rss_context_overlap
# Check failed 6710 < 7000 traffic on main context (2/2): [9280, 5217, 5358, 1352]
not ok 1 rss_ctx.test_rss_context_overlap
Ran test_rss_context_overlap and test_rss_context_overlap2
over 1,000 consecutive runs with no failures.
Signed-off-by: Zinc Lim <limzhineng2@gmail.com>
Link: https://patch.msgid.link/20260702164932.2832916-1-limzhineng2@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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In tcp_mmap.c, both child_thread() and main() allocate an EVP_MD_CTX
via EVP_MD_CTX_new() when integrity checking is enabled, but neither
function releases the context. child_thread() misses the free in its
common cleanup block, and main() returns without freeing the context.
This results in a SHA256 context leak on every run that uses the
‑i (integrity) option. Add the missing EVP_MD_CTX_free() calls to
the appropriate cleanup paths to fix the leak.
Fixes: 5c5945dc695c ("selftests/net: Add SHA256 computation over data sent in tcp_mmap")
Signed-off-by: Wang Yan <wangyan01@kylinos.cn>
Link: https://patch.msgid.link/20260702025949.442523-1-wangyan01@kylinos.cn
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Probe PMU support before loading bpf_test_rqspinlock.ko,
otherwise the test fails with not obvious error without
proper perf event support:
Failed to load bpf_test_rqspinlock.ko into the kernel: -2
serial_test_res_spin_lock_stress:FAIL:load module AA
unexpected error: -22 (errno 2)
Reported-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Maxim Khmelevskii <max@linux.ibm.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/bpf/20260708104729.1248234-2-max@linux.ibm.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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The signature_enforced, signature_too_large, signature_zero_size and
signature_bad_keyring subtests load a program that must be rejected,
but leave the fd open if the kernel unexpectedly accepts the load:
test_progs asserts record the failure and continue, so the fd would
linger for the rest of the run. Just close it.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20260708184107.369182-1-daniel@iogearbox.net
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Finite-slice EXT tasks need the periodic scheduler tick to expire their
slices even when nohz_full is enabled.
Add a regression test that selects a nohz_full CPU and exercises both
infinite-to-finite and finite-to-finite slice transitions across an idle
interval. For each finite task, verify that its ops.tick() callback is
invoked.
Skip the test when an allowed nohz_full CPU and a separate housekeeping
CPU are not available.
Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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The signed gen_loader no longer checks its metadata map from within
BPF; the kernel does it at BPF_PROG_LOAD by folding the loader's frozen
exclusive fd_array maps into the signature. Exercise that path end to
end. Extend with more test cases (e.g. map-less program, asserting the
LSM admission hook observes BPF_SIG_UNSIGNED and BPF_SIG_VERIFIED), and
retire the subtests that asserted the old in-loader check, which no
longer exists.
# LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t signed_loader
[...]
#412/1 signed_loader/loadtime_no_map:OK
#412/2 signed_loader/loadtime_with_map:OK
#412/3 signed_loader/metadata_match:OK
#412/4 signed_loader/signature_enforced:OK
#412/5 signed_loader/signed_nonexcl_fd_array_rejected:OK
#412/6 signed_loader/signed_unfrozen_fd_array_rejected:OK
#412/7 signed_loader/signed_nonarray_fd_array_rejected:OK
#412/8 signed_loader/signed_btf_fd_array_rejected:OK
#412/9 signed_loader/signed_module_kfunc_rejected:OK
#412/10 signed_loader/signature_failure_logs:OK
#412/11 signed_loader/signature_too_large:OK
#412/12 signed_loader/signature_zero_size:OK
#412/13 signed_loader/signature_bad_keyring:OK
#412/14 signed_loader/metadata_ctx_max_entries_ignored:OK
#412/15 signed_loader/metadata_ctx_initial_value_ignored:OK
#412/16 signed_loader/signature_authenticates_insns:OK
#412/17 signed_loader/signature_authenticates_metadata:OK
#412/18 signed_loader/hash_requires_frozen:OK
#412/19 signed_loader/no_update_after_freeze:OK
#412/20 signed_loader/freeze_writable_mmap:OK
#412/21 signed_loader/no_writable_mmap_frozen:OK
#412/22 signed_loader/map_hash_matches_libbpf:OK
#412/23 signed_loader/map_hash_multi_element:OK
#412/24 signed_loader/map_hash_bad_size:OK
#412/25 signed_loader/map_hash_unsupported_type:OK
#412/26 signed_loader/lsm_signature_verdict:OK
#412/27 signed_loader/signed_no_fd_array:OK
#412/28 signed_loader/signed_map_by_fd_rejected:OK
#412/29 signed_loader/signed_sparse_fd_array_rejected:OK
#412 signed_loader:OK
Summary: 1/29 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20260708075343.358712-8-daniel@iogearbox.net
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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With write-only excl member removed from struct bpf_map, ops moves
to offset 32 and inner_map_meta to offset 40. Update the expected
verifier message for the former and retarget the latter at the sha
byte array, so the beyond-member-end rejection path stays covered:
# LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t verifier_map_ptr
[...]
#619/5 verifier_map_ptr/bpf_map_ptr: read non-existent field rejected:OK
#619/6 verifier_map_ptr/bpf_map_ptr: read non-existent field rejected @unpriv:OK
#619/7 verifier_map_ptr/bpf_map_ptr: read beyond sha field rejected:OK
#619/8 verifier_map_ptr/bpf_map_ptr: read beyond sha field rejected @unpriv:OK
#619/9 verifier_map_ptr/bpf_map_ptr: read ops field accepted:OK
#619/10 verifier_map_ptr/bpf_map_ptr: read ops field accepted @unpriv:OK
[...]
#620 verifier_map_ptr_mixing:OK
Summary: 2/20 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20260708075343.358712-7-daniel@iogearbox.net
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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RISC-V rseq selftests include asm/fence.h from tools/arch/riscv,
but the rseq Makefile only adds tools/include in the CFLAGS, this
results in the building failure both for native and cross build:
In file included from rseq.h:131,
from rseq.c:37:
rseq-riscv.h:11:10: fatal error: asm/fence.h: No such file or directory
To fix it, add the matching tools/arch/$(ARCH)/include path in the
CFLAGS and derive ARCH from SUBARCH for standalone native builds where
ARCH is not set.
Fixes: c92786e179e0 ("KVM: riscv: selftests: Use the existing RISCV_FENCE macro in `rseq-riscv.h`")
Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Link: https://patch.msgid.link/20260707082348.36896-1-hui.wang@canonical.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:
- OOB, UAF, NULL-deref fixes in core and picolcd, logitech, letsketch,
appleir and multitouch drivers (Georgiy Osokin, HyeongJun An, Lee
Jones, Manish Khadka, Maoyi Xie and Trung Nguyen)
- fix for integer wraparound (and corresponding regression selftest) in
hid-bpf (Yiyang Chen)
* tag 'hid-for-linus-2026070801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
selftests/hid: multitouch: test a large ContactCountMaximum
HID: multitouch: fix out-of-bounds bit access on mt_io_flags
selftests/hid: Cover hid_bpf_get_data() size overflow
selftests/hid: Load only requested struct_ops maps
HID: bpf: Fix hid_bpf_get_data() range check
HID: lg-g15: cancel pending work on remove to fix a use-after-free
HID: logitech-dj: Fix maxfield check in DJ short report validation
HID: core: Fix OOB read in hid_get_report for numbered reports
HID: picolcd: prevent NULL pointer dereference in picolcd_send_and_wait()
HID: appleir: fix UAF on pending key_up_timer in remove()
HID: letsketch: fix UAF on inrange_timer at driver unbind
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Unregistering a user event now defers the drop of the enabler's event
reference (and the freeing of the enabler) past an RCU grace period. As a
result DIAG_IOCSDEL can transiently fail with -EBUSY while that last
reference is still being dropped, where it previously succeeded
immediately.
Two tests assumed the delete takes effect the instant the unregister
returns:
- abi_test "flags" deletes the event right after disabling it.
- perf_test's fixture teardown clear() deletes __test_event before the
next test registers the same name; a stale event makes the following
registration fail with -EADDRINUSE.
Retry the delete until it succeeds (or the event is already gone) with a
bounded wait, matching the existing wait_for_delete() idiom in the same
suite, so the tests are robust to the deferred teardown.
Link: https://patch.msgid.link/20260707180240.2887081-1-michael.bommarito@gmail.com
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Parameterize test cases by IP version using @ksft_variants. Set the
environment's IP version at the start of each case using a new local
helper, which also handles restoring the original value via defer().
The last case is left unparameterized because it does not send traffic
or exercise IP-version-specific code.
While here, fix an int vs str comparison bug `if cfg.addr_ipver == 4`.
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Nimrod Oren <noren@nvidia.com>
Link: https://patch.msgid.link/20260702062348.2123960-3-noren@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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NetDrvEpEnv picks a single IP version at init time, preferring IPv6 when
both are configured.
Add NetDrvEpEnv.set_ipver() to reselect the IP version and recompute the
derived address fields.
Reviewed-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Nimrod Oren <noren@nvidia.com>
Link: https://patch.msgid.link/20260702062348.2123960-2-noren@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Syscall User Dispatch is presently built under CONFIG_GENERIC_SYSCALL and
cannot be disabled independently.
Add CONFIG_SYSCALL_USER_DISPATCH to make it an optional feature.
Signed-off-by: Gregory Price <gourry@gourry.net>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260706140020.873735-2-gourry@gourry.net
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Add test_trunc exercising the OVS_ACTION_ATTR_TRUNC action. The test
verifies truncation limits in four steps: reject trunc(1) and
trunc(13) which are below ETH_HLEN, confirm normal forwarding works,
apply trunc(14) which truncates packets to the Ethernet header and
verify ping fails, then restore normal forwarding and verify recovery.
The kernel requires max_len >= ETH_HLEN (14 bytes). trunc(14) sets
OVS_CB(skb)->cutlen so pskb_trim strips the IP payload at output
time; the receiver drops the runt frame and no echo reply is
generated.
Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20260702074926.1174810-1-houminxi@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Commit c7f92042d3f3 ("selftests: gpio: Add gpio-cdev-uaf tests") added
the gpio-cdev-uaf binary to TEST_GEN_PROGS_EXTENDED but never added it
to .gitignore. Building it with:
make -C tools/testing/selftests/gpio TARGETS=gpio
leaves gpio-cdev-uaf as an untracked file.
Fixes: c7f92042d3f3 ("selftests: gpio: Add gpio-cdev-uaf tests")
Signed-off-by: Cihan Karadag <cihan.cihan@gmail.com>
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://patch.msgid.link/20260707235707.1349969-1-cihan.cihan@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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Add a TCP congestion-control struct_ops load test for a write through a
BTF pointer produced by bpf_rdonly_cast().
The test expects the verifier to reject the program before the TCP CA
btf_struct_access callback can whitelist the tcp_sock field write.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
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When building bpf selftest with latest bpf-next, I got the following failure:
In file included from /home/yhs/work/bpf-next/tools/testing/selftests/bpf/libarena/selftests/test_parallel_bitmap.bpf.c:8:
/home/yhs/work/bpf-next/tools/testing/selftests/bpf/libarena/include/libarena/bitmap.h:11:8: error: redefinition of
'bitmap'
11 | struct bitmap {
| ^
/home/yhs/work/bpf-next/tools/testing/selftests/bpf/tools/include/vmlinux.h:51320:8: note: previous definition is here
51320 | struct bitmap {
| ^
The vmlinux.h struct bitmap comes from drivers/md/md-bitmap.c:
struct bitmap {
struct bitmap_counts { ... }
...
}
To fix the issue, I renamed libarena struct bitmap to arena_bitmap to avoid the conflict.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/bpf/20260707220136.910374-1-yonghong.song@linux.dev
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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The ptrace_v_not_enabled test expects the child to reach its ebreak
before it has used the vector extension. That is not guaranteed when
using fork(), because libc may run child atfork handlers before
returning to the test code. In those cases PTRACE_GETREGSET for
NT_RISCV_VECTOR then succeeds instead of returning ENODATA for
inactive vector state.
Use the raw clone syscall with SIGCHLD to keep fork-like semantics
while bypassing libc's fork wrapper and atfork handler chain.
Cc: Andy Chiu <tchiu@tenstorrent.com>
Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Andrew Jones <andrew.jones@oss.qualcomm.com>
Link: https://patch.msgid.link/20260707153827.175245-1-andrew.jones@oss.qualcomm.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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A few selftests checking that the verifier represents spills for the
following pointer types w/o losing precision:
- PTR_TO_INSN
- PTR_TO_TP_BUFFER
- CONST_PTR_TO_DYNPTR
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260707-missing-spillable-types-v1-2-44a92121dc41@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Commit 98b74e1f3104 ("kselftests: timers: leap-a-day: Change default
arguments to help test runs") replaced the -s option with -w and made
"wait for the leap second" the non-default behaviour, but it only
updated the switch/case handling. Two things were left inconsistent:
- The getopt() option string still lists 's' instead of 'w', so
passing -w is rejected as an invalid option and the new behaviour
cannot be selected at all.
- The file header comment still documents the removed -s option and
an outdated default for -i.
Fix the getopt() string to accept 'w' (matching the existing case 'w':
handler) and update the header comment to describe -w, -t and the
current -i default.
Fixes: 98b74e1f3104 ("kselftests: timers: leap-a-day: Change default arguments to help test runs")
Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Acked-by: John Stultz <jstultz@google.com>
Link: https://patch.msgid.link/20260702093915.2652638-1-yijiangshan@kylinos.cn
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The calloc-allocated buffer in attr_lsm_count() is never released on
any exit path, including both the normal return path and the early
return when read_sysfs_lsms fails, resulting in a heap memory leak.
Add free() for the buffer on all return branches to fix the leak.
Fixes: d3d929a8b0cd ("LSM: selftests for Linux Security Module syscalls")
Signed-off-by: Wang Yan <wangyan01@kylinos.cn>
Reviewed-by: William Roberts <bill.c.roberts@gmail.com>
Tested-by: William Roberts <bill.c.roberts@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
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In the msg_alloc_iov function, the iov pointer is only assigned to
msg->msg_iov after all memory allocations complete successfully.
Therefore, when a calloc failure triggers the unwind_iov cleanup branch,
we should use the local variable iov instead of msg->msg_iov.
Fixes: 753fb2ee0934 ("bpf: sockmap, add msg_peek tests to test_sockmap")
Signed-off-by: Feng Yang <yangfeng@kylinos.cn>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20260707081434.539327-1-yangfeng59949@163.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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tc, xdp, socket_filter and flow_dissector programs can no longer update
or delete a sockmap. Adjust the tests:
- verifier_sockmap_mutate: the tc, xdp, socket_filter and
flow_dissector cases now expect __failure with "cannot update sockmap
in this context".
- sockmap_basic: drop "sockmap update" / "sockhash update", which load
a SEC("tc") program that copies a sock between maps.
- fexit_bpf2bpf: drop "func_sockmap_update", whose freplace program
updates a sockmap in the tc cls_redirect context.
Remove the now-unused test_sockmap_update.c and freplace_cls_redirect.c.
Signed-off-by: Sechang Lim <rhkrqnwk98@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/bpf/20260630145410.3648099-3-rhkrqnwk98@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Extend the eventfd IRQ test with a '-x' flag to let the user run the test
in xAPIC mode instead of the default x2APIC mode. When using xAPIC mode,
sanity check user input to ensure the test is being run with at most 255
vCPUs, as xAPIC can only address IDs 0-254 (255, i.e. 0xff, broadcasts to
all CPUs).
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: add sanity check on number of vCPUs]
Link: https://patch.msgid.link/20260626213534.3866178-21-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Extend the eventfd IRQ test with a '-v' flag to allow the user to
configure the number of vCPUs to create and run (versus only ever using a
single vCPU).
Update the routing logic to play nice with 32 bit IDs, enable x2APIC format
in KVM (to enable 32-bit ID routing), and disable KVM's x2APIC broadcast
quirk so that targeting vCPU 255 doesn't blast the interrupt to all vCPUs
when in x2APIC mode.
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Link: https://patch.msgid.link/20260626213534.3866178-20-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Extend the eventfd IRQ test with a '-m' flag to have the test migrate the
target vCPU to a random physical CPU before triggering its interrupt, e.g.
to validate KVM's ability to update device posted IRQ routing.
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: pin one vCPU at a time to simplify things, use main()'s affinity]
Link: https://patch.msgid.link/20260626213534.3866178-19-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Add a helper function, pin_task_to_random_cpu(), to pin a task to a random
CPU from a given cpu_set_t.
This helper will be used eventfd IRQ test to migrate vCPUs to random pCPUs,
to stress host-side interrupt routing and delivery.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-18-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Add and use a KVM wrapper for the sched_getaffinity() syscall so that
selftests don't need to manually assert that the syscall succeeded.
Note, some tests didn't actually assert success, but they all obviously
rely on the syscall to succeed.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-17-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Add a KVM wrapper for the gettid() syscall so that tests don't have to
open code the syscall() themselves. Unfortunately, not all flavors of
libc that KVM selftests support provide gettid(). Convert all existing
users of the syscall to the new wrapper.
Note, per the gettid() manpage[1], "This call is always successful", i.e.
prefixing kvm_ to the syscall name is aligned with the goal of providing
syscall wrappers that guarantee success.
No functional changes intended.
Link: https://man7.org/linux/man-pages/man2/gettid.2.html [1]
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-16-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Extend the eventfd IRQ test with an '-n' flag to route a subset of device
interrupts as NMIs (Non-Maskable Interrupts) into the guest using an
alternating pattern of 4 NMIs followed by 4 regular interrupts.
While this adds coverage for NMI injection, the primary goal is to
validate KVM's handling of non-postable interrupt delivery (AMD and Intel
IOMMUs only support posting fixed IRQs targeting a single vCPU). KVM
has historically bungled handling transitions between posted and remapped
modes. Use NMIs to stress the transitions, because they are a reliable,
architectural way to force these code paths.
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: add GUEST_RECEIVED_INTERRUPT(), massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-15-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Extend the eventfd IRQ test with a '-i' flag to let the user specify the
the number of IRQs to generate (instead of hardcoding the test to always
generate 1000 interrupts).
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-14-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Extend the eventfd IRQ test with an '-e' flag to set empty GSI routing
between interrupts. Clobbering the GSI routing table verifies that KVM
correctly handles CPUx => NULL => CPUy transitions, not just CPUx => CPUy
transitions, and verifies that KVM can "rebuild" an entire routing setup.
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: '-e' for "empty" instead of '-c' for "clear", massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-13-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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IRQ test
Extent the eventfd IRQ test with a '-a' flag to randomly affinitize the
device's host IRQ to different physical CPUs throughout the test. This
stresses the kernel's ability to maintain correct interrupt routing and
delivery even as the underlying hardware IRQ affinity is changed
dynamically via /proc/<irq>/smp_affinity{,_list}.
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-12-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Add a utility, proc_irq_set_smp_affinity(), to set the CPU affinity of a
Linux host IRQ via the proc filesystem. Use smp_affinity_list instead of
smp_affinity to avoid having to convert the single CPU to a bitmask.
The helper will be used by the eventfd IRQ test to verify delivery of IRQs
when the affinity is randomized/modified.
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: make the utility self-contained, drop "list", massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-11-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Extend the eventfd IRQ test with a '-d' argument that takes a BDF (in the
format segment:bus:device.function) of an interrupt-capable PCI(e) device
bound to VFIO, and use said device to trigger interrupts instead of always
synthesizing interrupts via direct writes to the eventfd.
Using a VFIO device to trigger interrupts validates the end-to-end delivery
of IRQs for "real" devices, and when supported by hardware (and KVM), also
validates interrupt delivery via IRQ bypass, i.e. via device posted IRQs.
Now that IOMMUFD is a thing, auto-probe IOMMUFD vs. "legacy" VFIO by
temporarily opening /dev/iommufd, and skip the test if neither IOMMUFD nor
legacy VFIO is available. Add a '-t' option to the user override the probe
logic, e.g. in case IOMMUFD is available but the system is configured for
legacy usage.
Note, the device must have a VFIO selftest driver in order to work with
the test. A helper script to list supported devices will hopefully be
available in the near future at
tools/testing/selftests/vfio/scripts/list_supported_devices.sh[1].
Example:
$ ./tools/testing/selftests/kvm/irq_test -d 0000:06:0a.1
Link: https://lore.kernel.org/all/20260602222941.3133236-1-jrhilke%40google.com [1]
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Link: https://patch.msgid.link/20260626213534.3866178-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Introduce proc_util.c and proc_util.h to house utility functions for
interacting with the proc filesystem.
Add vfio_msix_to_host_irq(), which parses /proc/interrupts, to get the host
Linux IRQ for a given VFIO device BDF and MSI-X vector.
This helper will be used by the eventfd IRQ test to print the host IRQ
number when triggering IRQs via VFIO device, e.g. to aid in debugging if
the test fails.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-9-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Add a new test, irq_test to verify that KVM correctly delivers interrupts
to a running vCPU, when triggered via an eventfd bound to a KVM GSI using
KVM's irqfd mechanism.
This test is intentionally simple, for now. Support for sending interrupts
via VFIO devices, for IRQ bypass, and for other features will be added in
the near future.
Add the test in common code, even though it currently will only build and
run on x86, as the concept and the bulk of the host-side code isn't
specific to x86.
Suggested-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/kvm/20250404193923.1413163-68-seanjc@google.com
Signed-off-by: David Matlack <dmatlack@google.com>
Co-developed-by: Josh Hilke <jrhilke@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: use while() and TEST_ASSERT() instead of if-statement => TEST_FAIL()]
Link: https://patch.msgid.link/20260626213534.3866178-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Introduce kvm_random_u64_in_range(state, min, max). This function
returns a random u64 in the inclusive range of [min, max] using a struct
kvm_random_state.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
Link: https://patch.msgid.link/20260626213534.3866178-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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pRNG
Seed the RNG used by random() using the de facto standard method of
srand(time(0)), so that a different seed is actually used in each test run.
E.g. without seeding the RNG, literally every test on x86 will use
0x6b8b4567 to seed the KVM RNG.
Link: https://patch.msgid.link/20260626213534.3866178-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Initialize the default kvm_rng during selftest initialization so that the
pRNG can be used by tests before creating a VM. As pointed out by Sashiko,
failure to actually initialize the generate makes it decidedly not random.
Link: https://patch.msgid.link/20260626213534.3866178-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Rename functions prefixed with 'guest_random_' to 'kvm_random_' and the
global random state variable 'guest_rng' to 'kvm_rng', as the pRNG isn't
strictly limited to guest code. This will allow using the pRNG in host
code without creating confusing/misleading function calls.
No functional changes are intended.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Josh Hilke <jrhilke@google.com>
[sean: massage changelog]
Link: https://patch.msgid.link/20260626213534.3866178-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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