kernel/linux.git/tools/testing/selftests, branch v6.1.168

selftests: mptcp: join: check removing signal+subflow endp

2026-04-11T12:16:38+00:00

commit 1777f349ff41b62dfe27454b69c27b0bc99ffca5 upstream. This validates the previous commit: endpoints with both the signal and subflow flags should always be marked as used even if it was not possible to create new subflows due to the MPTCP PM limits. For this test, an extra endpoint is created with both the signal and the subflow flags, and limits are set not to create extra subflows. In this case, an ADD_ADDR is sent, but no subflows are created. Still, the local endpoint is marked as used, and no warning is fired when removing the endpoint, after having sent a RM_ADDR. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 85df533a787b ("mptcp: pm: do not ignore 'subflow' if 'signal' flag is also set") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20260303-net-mptcp-misc-fixes-7-0-rc2-v1-5-4b5462b6f016@kernel.org Signed-off-by: Jakub Kicinski [ No conflicts, but in this kernel version 'run_tests' doesn't support parameters set via env vars: positional parameters need to be used. See commit 595ef566a2ef ("selftests: mptcp: drop addr_nr_ns1/2 parameters") and commit e571fb09c893 ("selftests: mptcp: add speed env var") which are not in this kernel version. ] Signed-off-by: Matthieu Baerts (NGI0) Signed-off-by: Greg Kroah-Hartman

selftests: mptcp: join: implicit: stop transfer after last check

2026-04-11T12:16:38+00:00

With this kernel version, the 'implicit EP' MPTCP Join selftest ended with an error message: 115 implicit EP creation[ ok ] ID change is prevented[ ok ] modif is allowed[ ok ] TcpPassiveOpens 2 0.0 TcpEstabResets 2 0.0 TcpInSegs 315 0.0 TcpOutSegs 617 0.0 TcpOutRsts 1 0.0 TcpExtDelayedACKs 289 0.0 TcpExtTCPPureAcks 6 0.0 TcpExtTCPOrigDataSent 306 0.0 TcpExtTCPDelivered 306 0.0 MPTcpExtMPCapableSYNRX 1 0.0 MPTcpExtMPCapableACKRX 1 0.0 MPTcpExtMPJoinSynRx 1 0.0 MPTcpExtMPJoinAckRx 1 0.0 MPTcpExtAddAddr 1 0.0 MPTcpExtEchoAdd 1 0.0 MPTcpExtMPFastcloseTx 1 0.0 MPTcpExtMPRstTx 1 0.0 MPTcpExtMPRstRx 1 0.0 TcpActiveOpens 2 0.0 TcpEstabResets 2 0.0 TcpInSegs 617 0.0 TcpOutSegs 315 0.0 TcpOutRsts 1 0.0 TcpExtTCPPureAcks 308 0.0 TcpExtTCPOrigDataSent 306 0.0 TcpExtTCPDelivered 307 0.0 MPTcpExtMPCapableSYNTX 1 0.0 MPTcpExtMPCapableSYNACKRX 1 0.0 MPTcpExtMPJoinSynAckRx 1 0.0 MPTcpExtAddAddr 1 0.0 MPTcpExtEchoAdd 1 0.0 MPTcpExtMPFastcloseRx 1 0.0 MPTcpExtMPRstTx 1 0.0 MPTcpExtMPRstRx 1 0.0 MPTcpExtRcvWndShared 1 0.0 That's because the test was waiting for the end of the transfer for no reasons, which ended after a timeout with an error. In this case, the stats were displayed, but this error was ignored: the end of transfer is not validated in this test. To fix that, stop the transfer after the last check, similar to what is done in the other tests. Fixes: 699879d5f866 ("selftests: mptcp: join: endpoints: longer transfer") Signed-off-by: Matthieu Baerts (NGI0) Signed-off-by: Greg Kroah-Hartman

Revert "selftests: net: amt: wait longer for connection before sending packets"

2026-03-25T10:03:25+00:00

This reverts commit 7724036d4804222007689cd69f248347eb154793 which is commit 04708606fd7bdc34b69089a4ff848ff36d7088f9 upstream. The reverted patch introduced dependency on lib.sh under net selftests. The file was introduced in v6.8-rc1 via commit 25ae948b4478 ("selftests/net: add lib.sh"). Without lib.sh, the amt test fails with: ./amt.sh: line 76: source: lib.sh: file not found The whole history of lib.sh includes about 50 commits and considering the file never landed on 6.1 it may be better to not introduce it. Signed-off-by: Nathan Gao Acked-by: Taehee Yoo Signed-off-by: Greg Kroah-Hartman

selftests: mptcp: join: check RM_ADDR not sent over same subflow

2026-03-25T10:03:15+00:00

[ Upstream commit 560edd99b5f58b2d4bbe3c8e51e1eed68d887b0e ] This validates the previous commit: RM_ADDR were sent over the first found active subflow which could be the same as the one being removed. It is more likely to loose this notification. For this check, RM_ADDR are explicitly dropped when trying to send them over the initial subflow, when removing the endpoint attached to it. If it is dropped, the test will complain because some RM_ADDR have not been received. Note that only the RM_ADDR are dropped, to allow the linked subflow to be quickly and cleanly closed. To only drop those RM_ADDR, a cBPF byte code is used. If the IPTables commands fail, that's OK, the tests will continue to pass, but not validate this part. This can be ignored: another subtest fully depends on such command, and will be marked as skipped. The 'Fixes' tag here below is the same as the one from the previous commit: this patch here is not fixing anything wrong in the selftests, but it validates the previous fix for an issue introduced by this commit ID. Fixes: 8dd5efb1f91b ("mptcp: send ack for rm_addr") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20260303-net-mptcp-misc-fixes-7-0-rc2-v1-3-4b5462b6f016@kernel.org Signed-off-by: Jakub Kicinski [ adapted chk_subflow_nr calls to include extra empty first argument ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

selftests: mptcp: more stable simult_flows tests

2026-03-25T10:02:59+00:00

commit 8c09412e584d9bcc0e71d758ec1008d1c8d1a326 upstream. By default, the netem qdisc can keep up to 1000 packets under its belly to deal with the configured rate and delay. The simult flows test-case simulates very low speed links, to avoid problems due to slow CPUs and the TCP stack tend to transmit at a slightly higher rate than the (virtual) link constraints. All the above causes a relatively large amount of packets being enqueued in the netem qdiscs - the longer the transfer, the longer the queue - producing increasingly high TCP RTT samples and consequently increasingly larger receive buffer size due to DRS. When the receive buffer size becomes considerably larger than the needed size, the tests results can flake, i.e. because minimal inaccuracy in the pacing rate can lead to a single subflow usage towards the end of the connection for a considerable amount of data. Address the issue explicitly setting netem limits suitable for the configured link speeds and unflake all the affected tests. Fixes: 1a418cb8e888 ("mptcp: simult flow self-tests") Cc: stable@vger.kernel.org Signed-off-by: Paolo Abeni Reviewed-by: Matthieu Baerts (NGI0) Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20260303-net-mptcp-misc-fixes-7-0-rc2-v1-1-4b5462b6f016@kernel.org Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman

selftests/mm/charge_reserved_hugetlb: drop mount size for hugetlbfs

2026-03-04T12:20:47+00:00

[ Upstream commit 1aa1dd9cc595917882fb6db67725442956f79607 ] charge_reserved_hugetlb.sh mounts a hugetlbfs instance at /mnt/huge with a fixed size of 256M. On systems with large base hugepages (e.g. 512MB), this is smaller than a single hugepage, so the hugetlbfs mount ends up with zero capacity (often visible as size=0 in mount output). As a result, write_to_hugetlbfs fails with ENOMEM and the test can hang waiting for progress. === Error log === # uname -r 6.12.0-xxx.el10.aarch64+64k #./charge_reserved_hugetlb.sh -cgroup-v2 # ----------------------------------------- ... # nr hugepages = 10 # writing cgroup limit: 5368709120 # writing reseravation limit: 5368709120 ... # write_to_hugetlbfs: Error mapping the file: Cannot allocate memory # Waiting for hugetlb memory reservation to reach size 2684354560. # 0 # Waiting for hugetlb memory reservation to reach size 2684354560. # 0 ... # mount |grep /mnt/huge none on /mnt/huge type hugetlbfs (rw,relatime,seclabel,pagesize=512M,size=0) # grep -i huge /proc/meminfo ... HugePages_Total: 10 HugePages_Free: 10 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 524288 kB Hugetlb: 5242880 kB Drop the mount args with 'size=256M', so the filesystem capacity is sufficient regardless of HugeTLB page size. Link: https://lkml.kernel.org/r/20251221122639.3168038-3-liwang@redhat.com Fixes: 29750f71a9b4 ("hugetlb_cgroup: add hugetlb_cgroup reservation tests") Signed-off-by: Li Wang Acked-by: David Hildenbrand (Red Hat) Acked-by: Waiman Long Cc: Mark Brown Cc: Shuah Khan Cc: Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin

selftests: forwarding: vxlan_bridge_1d_ipv6: fix test failure with br_netfilter enabled

2026-03-04T12:20:05+00:00

[ Upstream commit ce9f6aec0fb780dafc1dfc5f47c688422aff464a ] The test generates VXLAN traffic using mausezahn, where the encapsulated inner IPv6 packet has an incorrect payload length set in the IPv6 header. After VXLAN decapsulation, such packets do not pass sanity checks in br_netfilter and are dropped, which causes the test to fail. Fix this by setting the correct IPv6 payload length for the encapsulated packet generated by mausezahn, so that the packet is accepted by br_netfilter. tools/testing/selftests/net/forwarding/vxlan_bridge_1d_ipv6.sh lines 698-706 )"00:03:"$( : Payload length )"3a:"$( : Next header )"04:"$( : Hop limit )"$saddr:"$( : IP saddr )"$daddr:"$( : IP daddr )"80:"$( : ICMPv6.type )"00:"$( : ICMPv6.code )"00:"$( : ICMPv6.checksum ) Data after IPv6 header: • 80: — 1 byte (ICMPv6 type) • 00: — 1 byte (ICMPv6 code) • 00: — 1 byte (ICMPv6 checksum, truncated) Total: 3 bytes → 00:03 is correct. The old value 00:08 did not match the actual payload size. Fixes: b07e9957f220 ("selftests: forwarding: Add VxLAN tests with a VLAN-unaware bridge for IPv6") Signed-off-by: Aleksei Oladko Reviewed-by: Ido Schimmel Link: https://patch.msgid.link/20260213131907.43351-3-aleksey.oladko@virtuozzo.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

selftests: forwarding: vxlan_bridge_1d: fix test failure with br_netfilter enabled

2026-03-04T12:20:05+00:00

[ Upstream commit 02cb2e6bacbb08ebf6acb61be816efd11e1f4a21 ] The test generates VXLAN traffic using mausezahn, where the encapsulated inner IPv4 packet contains a zero IP header checksum. After VXLAN decapsulation, such packets do not pass sanity checks in br_netfilter and are dropped, which causes the test to fail. Fix this by calculating and setting a valid IPv4 header checksum for the encapsulated packet generated by mausezahn, so that the packet is accepted by br_netfilter. Fixed by using the payload_template_calc_checksum() / payload_template_expand_checksum() helpers that are only available in v6.3 and newer kernels. Fixes: a0b61f3d8ebf ("selftests: forwarding: vxlan_bridge_1d: Add an ECN decap test") Signed-off-by: Aleksei Oladko Reviewed-by: Ido Schimmel Link: https://patch.msgid.link/20260213131907.43351-2-aleksey.oladko@virtuozzo.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

selftests: mlxsw: tc_restrictions: Fix test failure with new iproute2

2026-03-04T12:20:03+00:00

[ Upstream commit a2646773a005b59fd1dc7ff3ba15df84889ca5d2 ] As explained in [1], iproute2 started rejecting tc-police burst sizes that result in an overflow. This can happen when the burst size is high enough and the rate is low enough. A couple of test cases specify such configurations, resulting in iproute2 errors and test failure. Fix by reducing the burst size so that the test will pass with both new and old iproute2 versions. [1] https://lore.kernel.org/netdev/20250916215731.3431465-1-jay.vosburgh@canonical.com/ Fixes: cb12d1763267 ("selftests: mlxsw: tc_restrictions: Test tc-police restrictions") Signed-off-by: Ido Schimmel Signed-off-by: Petr Machata Reviewed-by: Simon Horman Link: https://patch.msgid.link/88b00c6e85188aa6a065dc240206119b328c46e1.1770643998.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

selftests/bpf: veristat: fix printing order in output_stats()

2026-03-04T12:19:26+00:00

[ Upstream commit c286e7e9d1f1f3d90ad11c37e896f582b02d19c4 ] The order of the variables in the printf() doesn't match the text and therefore veristat prints something like this: Done. Processed 24 files, 0 programs. Skipped 62 files, 0 programs. When it should print: Done. Processed 24 files, 62 programs. Skipped 0 files, 0 programs. Fix the order of variables in the printf() call. Fixes: 518fee8bfaf2 ("selftests/bpf: make veristat skip non-BPF and failing-to-open BPF objects") Tested-by: Eduard Zingerman Signed-off-by: Puranjay Mohan Link: https://lore.kernel.org/r/20251231221052.759396-1-puranjay@kernel.org Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin