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3 daysMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2-1/+5
Pull kvm fixes from Paolo Bonzini: "arm64: - Fix ITS EventID sanitisation when restoring an interrupt translation table. - Fix PPI memory leak when failing to initialise a vcpu. - Correctly return an error when the validation of a hypervisor trace descriptor fails, and limit this validation to protected mode only. RISC-V: - Fix invalid HVA warning in steal-time recording - Return SBI_ERR_FAILURE to guest upon OOM in pmu_event_info() and pmu_snapshot_set_shmem() - Fix NULL pointer dereference in SBI v0.1 SEND_IPI handler - Fix sign extension of value for MMIO loads s390: - Fix bugs in vSIE (nested virtualization) and UCONTROL, caused by the page table rewrite. x86: - Apply erratum #1235 workaround (disable AVIC IPI virtualization) on Hygon Family 18h, just like on AMD Family 17h. - When KVM_CAP_X86_APIC_BUS_CYCLES_NS is queried on a specific VM, return the VM's configured APIC bus frequency instead of the default. This is less confusing (read: not wrong) and makes it easier to fill in CPUID information that communicates the APIC bus frequency to the guest. Selftests: - Do not include glibc-internal <bits/endian.h>; it worked by chance and broke building KVM selftests with musl" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: SVM: Disable AVIC IPI virtualization on Hygon Family 18h (erratum #1235) KVM: selftests: Verify that KVM returns the configured APIC cycle length KVM: x86: Return the VM's configured APIC bus frequency when queried KVM: selftests: elf: Include <endian.h> instead of <bits/endian.h> KVM: s390: Properly reset zero bit in PGSTE KVM: s390: vsie: Fix redundant rmap entries KVM: s390: vsie: Fix unshadowing logic KVM: s390: Fix leaking kvm_s390_mmu_cache in case of errors KVM: s390: vsie: Fix memory leak when unshadowing KVM: arm64: Fix nVHE/pKVM hyp tracing error on invalid desc KVM: arm64: vgic: Free private_irqs when init fails after allocation KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits RISC-V: KVM: Fix sign extension for MMIO loads RISC-V: KVM: Fix NULL pointer dereference in SBI v0.1 SEND_IPI handler riscv: kvm: return SBI_ERR_FAILURE for pmu_event_info() when OOM riscv: kvm: return SBI_ERR_FAILURE for pmu_snapshot_set_shmem() when OOM RISC-V: KVM: Fix invalid HVA warning in steal-time recording
3 daysMerge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfLinus Torvalds6-3/+149
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()
5 dayslibbpf: fix off-by-one in emit_signature_match jump offsetKP Singh1-2/+1
The offset for the cleanup-label jump is computed before the MOV R7 instruction is emitted, but the JMP lands after it. Account for the extra insn in the offset calculation (-2 instead of -1). Drop the redundant self-loop in the else branch; gen->error = -ERANGE already marks the generation as failed. Fixes: fb2b0e290147 ("libbpf: Update light skeleton for signing") Signed-off-by: KP Singh <kpsingh@kernel.org> Link: https://lore.kernel.org/r/20260522215337.662271-2-kpsingh@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
5 daysMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds4-4/+21
Pull rdma fixes from Jason Gunthorpe: - syzbot triggred crash in rxe due to concurrent plug/unplug - Possible non-zero'd memory exposed to userspace in bnxt_re - Malicous 'magic packet' with SIW causes a buffer overflow - Tighten the new uAPI validation code to not crash in debugging prints and have the right module dependencies in drivers - mana was missing the max_msg_sz report to userspace - UAF in rtrs on an error path * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: RDMA/rtrs: Fix use-after-free in path file creation cleanup RDMA/mana_ib: Report max_msg_sz in mana_ib_query_port RDMA/core: Do not read wild stack memory in uverbs_get_handler_fn() RDMA/core: Move the _ib_copy_validate_udata* functions to ib_core_uverbs RDMA/siw: Reject MPA FPDU length underflow before signed receive math RDMA/bnxt_re: zero shared page before exposing to userspace selftests/rdma: explicitly skip tests when required modules are missing RDMA/nldev: Add mutual exclusion in nldev_dellink()
5 daysKVM: selftests: Verify that KVM returns the configured APIC cycle lengthSean Christopherson1-0/+4
Add checks in the APIC bus clock test to verify that querying KVM_CAP_X86_APIC_BUS_CYCLES_NS on the VM after changing the frequency returns the VM's actual APIC cycle length, not KVM's default. For giggles, verify that KVM still returns its default frequency for the system-scoped check. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20260522173526.3539407-3-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
5 daysKVM: selftests: elf: Include <endian.h> instead of <bits/endian.h>Hisam Mehboob1-1/+1
<bits/endian.h> is a glibc-internal header that explicitly states it should never be included directly: #error "Never use <bits/endian.h> directly; include <endian.h> instead." Replace it with the correct public header <endian.h> which works on all C libraries including musl. Building KVM selftests with musl-gcc fails with: lib/elf.c:10:10: fatal error: bits/endian.h: No such file or directory Fixes: 6089ae0bd5e1 ("kvm: selftests: add sync_regs_test") Signed-off-by: Hisam Mehboob <hisamshar@gmail.com> Message-ID: <20260409164020.1575176-4-hisamshar@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
6 daysMerge tag 'net-7.1-rc5' of ↵Linus Torvalds12-45/+261
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Including fixes from Bluetooth, wireless and netfilter. Craziness continues with no end in sight. Even discounting the driver revert this is a pretty huge PR for standards of the previous era. I'd speculate - we haven't seen the worst of it, yet. Good news, I guess, is that so far we haven't seen many (any?) cases of "AI reported a bug, we fixed it and a real user regressed". Current release - fix to a fix: - Bluetooth: btmtk: accept too short WMT FUNC_CTRL events - vsock/virtio: relax the recently added memory limit a little Current release - regressions: - IB/IPoIB: make sure IB drivers always use async set_rx_mode since some (mlx5) are now required to use it due to locking changes Previous releases - regressions: - udp: fix UDP length on last GSO_PARTIAL segment - af_unix: fix UAF read of tail->len in unix_stream_data_wait() - tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction - mlx5e: fix unlocked writing to ICOSQ, breaking AF_XDP Previous releases - always broken: - tap: fix stack info leak in tap_ioctl() SIOCGIFHWADDR - ipv4: raw: reject IP_HDRINCL packets with ihl < 5 - Bluetooth: a lot of locking and concurrency fixes (as always) - batman-adv (mesh wireless networking): a lot of random fixes for issues reported by security researchers and Sashiko - netfilter: same thing, a lot of small security-ish fixes all over the place, nothing really stands out Misc: - bring back the old 3c509 driver, Maciej wants to maintain it" * tag 'net-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (187 commits) net: enetc: avoid VF->PF mailbox timeout during SR-IOV teardown net: enetc: fix init and teardown order to prevent use of unsafe resources net: enetc: fix unbounded loop and interrupt handling in VF-to-PF messaging net: enetc: fix DMA write to freed memory in enetc_msg_free_mbx() net: enetc: fix race condition in VF MAC address configuration net: enetc: fix TOCTOU race and validate VF MAC address net: enetc: add ratelimiting to VF mailbox error messages net: enetc: fix missing error code when pf->vf_state allocation fails net: enetc: fix incorrect mailbox message status returned to VFs net: bridge: prevent too big nested attributes in br_fill_linkxstats() l2tp: use list_del_rcu in l2tp_session_unhash net: bcmgenet: keep RBUF EEE/PM disabled ethernet: 3c509: Fix most coding style issues ethernet: 3c509: Update documentation to match MAINTAINERS ethernet: 3c509: Add GPL 2.0 SPDX license identifier ethernet: 3c509: Fix AUI transceiver type selection Revert "drivers: net: 3com: 3c509: Remove this driver" tools: ynl: support listening on all nsids net: gro: don't merge zcopy skbs pds_core: ensure null-termination for firmware version strings ...
7 daystools: ynl: support listening on all nsidsIlya Maximets1-5/+32
A new method ntf_listen_all_nsid() to enable listening on events from all namespaces. Useful for testing cross-namespace functionality. recv() replaced with recvmsg() to be able to receive NSID through the ancillary data. Signed-off-by: Ilya Maximets <i.maximets@ovn.org> Link: https://patch.msgid.link/20260520172317.175168-4-i.maximets@ovn.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
7 daysselftests: net: Fix checksums in xdp_nativeNimrod Oren1-25/+30
Data adjustment cases failed with "Data exchange failed" when using IPv4 because the program did not update the IP and UDP checksums in the IPv4 branch. The issue was masked when both IPv4 and IPv6 were configured, since the test harness prefers IPv6. While here, generalize csum_fold_helper() to fold twice so it works for any 32-bit input. Fixes: 0b65cfcef9c5 ("selftests: drv-net: Test tail-adjustment support") 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/20260520153928.3371765-1-noren@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
7 daysselftests: rds: config: disable modulesMatthieu Baerts (NGI0)1-0/+1
The run.sh script explicitly checks that CONFIG_MODULES is disabled. By default, this config option is enabled. Explicitly disable it to be able to run the RDS tests. Note that writing '# CONFIG_(...) is not set' is usually recommended to disable an option in the .config, but it looks like selftests usually set 'CONFIG_(...)=n', which looks clearer. Fixes: 0f5d68004780 ("selftests: rds: add tools/testing/selftests/net/rds/config") Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Reviewed-by: Allison Henderson <achender@kernel.org> Link: https://patch.msgid.link/20260520-net-rds-config-modules-v1-1-2100df02fe9a@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
7 daysselftests/bpf: add regression test for ktls+sockmap verdict UAFXingwang Xiang2-0/+124
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>
8 daysbpf: Reject NULL data/sig in bpf_verify_pkcs7_signatureKP Singh1-1/+1
__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: 865b0566d8f1 ("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>
8 daysselftests: bridge_vlan_mcast: Test toggling of multicast snoopingIdo Schimmel1-1/+29
Test toggling of multicast snooping when per-VLAN multicast snooping is enabled. The test always passes, but without "bridge: mcast: Fix possible use-after-free when removing a bridge port" it results in a splat. Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Link: https://patch.msgid.link/20260517121122.188333-3-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
9 daysMerge tag 'mm-hotfixes-stable-2026-05-18-21-07' of ↵Linus Torvalds2-1/+51
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "14 hotfixes. 9 are for MM. 10 are cc:stable and the remainder are for post-7.1 issues or aren't deemed suitable for backporting. There's a two-patch MAINTAINERS series from Mike Rapoport which updates us for the new KEXEC/KDUMP/crash/LUO/etc arrangements. And another two-patch series from Muchun Song to fix a couple of memory-hotplug issues. Otherwise singletons, please see the changelogs for details" * tag 'mm-hotfixes-stable-2026-05-18-21-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/memory: fix spurious warning when unmapping device-private/exclusive pages mm: fix __vm_normal_page() to handle missing support for pmd_special()/pud_special() drivers/base/memory: fix memory block reference leak in poison accounting mm/memory_hotplug: fix memory block reference leak on remove lib: kunit_iov_iter: fix test fail on powerpc mm/page_alloc: fix initialization of tags of the huge zero folio with init_on_free MAINTAINERS: add kexec@ list to LIVE UPDATE ENTRY MAINTAINERS: add tree for KDUMP and KEXEC selftests/mm: run_vmtests.sh: fix destructive tests invocation scripts/gdb: slab: update field names of struct kmem_cache scripts/gdb: mm: cast untyped symbols in x86_page_ops mm/damon: fix damos_stat tracepoint format for sz_applied mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break() mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page
9 daysselftests: mptcp: drop nanoseconds width specifierMatthieu Baerts (NGI0)2-8/+8
Using the format specifier +%s%3N with GNU date is honoured, and only prints 3 digits of the nanoseconds portion of the seconds since epoch, which corresponds to the milliseconds. The uutils implementation of date currently does not honour this, and always prints all 9 digits. This is a known issue [1], but can be worked around by adapting this test to use nanoseconds instead of microseconds, and then divide it by 1e6. This fix is similar to what has been done on systemd side [2], and it is needed to run the selftests on Ubuntu 26.04, containing uutils 0.8.0. Note that the Fixes tag is there even if this patch doesn't fix an issue in the kernel selftests, but it is useful for those using uutils 0.8.0. Fixes: 048d19d444be ("mptcp: add basic kselftest for mptcp") Cc: stable@vger.kernel.org Link: https://github.com/uutils/coreutils/issues/11658 [1] Link: https://github.com/systemd/systemd/pull/41627 [2] Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260515-net-mptcp-misc-fixes-7-1-rc4-v2-6-701e96419f2f@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
9 daysselftests: mptcp: join: cover ADD_ADDR tx drop and list progressLi Xiasong1-0/+31
Extend add_addr_ports_tests with IPv6 signaling cases that exercise ADD_ADDR tx-space shortage when tcp_timestamps are enabled. Add one case to verify PM still progresses to later signal endpoints after the first one is dropped. This covers both failure accounting and the non-blocking behavior of the announce list after a tx-space drop on pure ACK. Signed-off-by: Li Xiasong <lixiasong1@huawei.com> Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260515-net-mptcp-misc-fixes-7-1-rc4-v2-3-701e96419f2f@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
9 daysMerge tag 'ovpn-net-20260514' of https://github.com/OpenVPN/ovpn-net-nextPaolo Abeni3-6/+6
Antonio Quartulli says: ==================== Included fixes: * fix TCP selftest failures by reducing number of attempted pings * fix RCU ptr deref outside of RCU read section * fix UAF in case of TCP peer failed to be added to hashtable * fix race condition between iface teardown and new peer being added * ensure dstats are updated with BH disabled to avoid concurrency * tag 'ovpn-net-20260514' of https://github.com/OpenVPN/ovpn-net-next: ovpn: disable BHs when updating device stats ovpn: fix race between deleting interface and adding new peer ovpn: respect peer refcount in CMD_NEW_PEER error path ovpn: tcp - use cached peer pointer in ovpn_tcp_close() selftests: ovpn: reduce remaining ping flood counts ==================== Link: https://patch.msgid.link/20260514231544.795993-1-antonio@openvpn.net Signed-off-by: Paolo Abeni <pabeni@redhat.com>
9 daysMerge branch 'perf-upstream'Namhyung Kim12-20/+93
10 daysselftests/bpf: Cover global subprog exception leaksKumar Kartikeya Dwivedi1-0/+22
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>
12 daysMerge tag 'block-7.1-20260515' of ↵Linus Torvalds1-0/+11
git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux Pull block fixes from Jens Axboe: - NVMe merge request via Keith: - Fix memory leak on a passthrough integrity mapping failure (Keith) - Hide secrets behind debug option (Hannes) - Fix pci use-after-free for host memory buffer (Chia-Lin Kao) - Fix tcp taregt use-after-free for data digest (Sagi) - Revert a mistaken quirk (Alan Cui) - Fix uevent and controller state race condition (Maurizio) - Fix apple submission queue re-initialization (Nick Chan) - Three fixes for blk-integrity, fixing an issue with the user data mapping and two problems with recomputing number of segments - Two fixes for the iov_iter bounce buffering - Fix for the handling of dead zoned write plugs - ublk max_sectors validation fix, with associated selftest addition * tag 'block-7.1-20260515' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: nvme-apple: Reset q->sq_tail during queue init block: align down bounces bios block: pass a minsize argument to bio_iov_iter_bounce selftests: ublk: cap nthreads to kernel's actual nr_hw_queues block: fix handling of dead zone write plugs block: bio-integrity: Fix null-ptr-deref in bio_integrity_map_user() block: recompute nr_integrity_segments in blk_insert_cloned_request block: don't overwrite bip_vcnt in bio_integrity_copy_user() nvme: fix race condition between connected uevent and STARTED_ONCE flag Revert "nvme: add quirk NVME_QUIRK_IGNORE_DEV_SUBNQN for 144d:a808" nvmet-tcp: Fix potential UAF when ddgst mismatch nvme-pci: fix use-after-free in nvme_free_host_mem() nvmet-auth: Do not print DH-HMAC-CHAP secrets nvme: fix bio leak on mapping failure nvme: make prp passthrough usage less scary ublk: reject max_sectors smaller than PAGE_SECTORS in parameter validation
13 daysperf trace: Update beautifier script for clone flagsNamhyung Kim1-0/+4
According to the change in the sched.h, update the script to generate the flags array like below. Note that '+1' is needed to detect bitmask pattern at index 0. $ cat tools/perf/trace/beauty/generated/clone_flags_array.c static const char *clone_flags[] = { [ilog2(0x00000100) + 1] = "VM", [ilog2(0x00000200) + 1] = "FS", [ilog2(0x00000400) + 1] = "FILES", [ilog2(0x00000800) + 1] = "SIGHAND", [ilog2(0x00001000) + 1] = "PIDFD", [ilog2(0x00002000) + 1] = "PTRACE", [ilog2(0x00004000) + 1] = "VFORK", [ilog2(0x00008000) + 1] = "PARENT", [ilog2(0x00010000) + 1] = "THREAD", [ilog2(0x00020000) + 1] = "NEWNS", [ilog2(0x00040000) + 1] = "SYSVSEM", [ilog2(0x00080000) + 1] = "SETTLS", [ilog2(0x00100000) + 1] = "PARENT_SETTID", [ilog2(0x00200000) + 1] = "CHILD_CLEARTID", [ilog2(0x00400000) + 1] = "DETACHED", [ilog2(0x00800000) + 1] = "UNTRACED", [ilog2(0x01000000) + 1] = "CHILD_SETTID", [ilog2(0x02000000) + 1] = "NEWCGROUP", [ilog2(0x04000000) + 1] = "NEWUTS", [ilog2(0x08000000) + 1] = "NEWIPC", [ilog2(0x10000000) + 1] = "NEWUSER", [ilog2(0x20000000) + 1] = "NEWPID", [ilog2(0x40000000) + 1] = "NEWNET", [ilog2(0x80000000) + 1] = "IO", [ilog2(0x00000080) + 1] = "NEWTIME", [32 + 1] = "CLEAR_SIGHAND", [33 + 1] = "INTO_CGROUP", [34 + 1] = "AUTOREAP", [35 + 1] = "NNP", [36 + 1] = "PIDFD_AUTOKILL", [37 + 1] = "EMPTY_MNTNS", }; This was found by Sashiko during review. Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
13 daysperf trace: Add beautifier script for fsmount flagsNamhyung Kim6-15/+56
And move the existing one to fsmount_attr.sh to be more precise. Now the fsmount_flags[] is generated from the mount.h like below. The ilog2() + 1 is an existing pattern to handle bit flags. $ cat tools/perf/trace/beauty/generated/fsmount_arrays.c static const char *fsmount_flags[] = { [ilog2(0x00000001) + 1] = "CLOEXEC", [ilog2(0x00000002) + 1] = "NAMESPACE", }; It was found by Sashiko during the review. Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
13 daysperf build: Add make check-headers targetNamhyung Kim2-2/+4
Don't print header differences during the perf build as it's noisy. Mostly people won't care and find it annoying. As it's to improve perf trace beautifier to catch up new changes mostly in UAPIs, we can make it a separate build target and call it occasionally. Make it and build-test related targets phony. Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
13 daysperf trace: Sync uapi/linux/sched.h with the kernel sourceNamhyung Kim1-2/+15
To pick up changes from: 9d4e752a24f740b3 ("namespace: allow creating empty mount namespaces") c8134b5f13ae959d ("pidfd: add CLONE_PIDFD_AUTOKILL") 24baca56fafc33d4 ("clone: add CLONE_NNP") 12ae2c81b21cfaa1 ("clone: add CLONE_AUTOREAP") 2e7af192697ef2a7 ("sched/deadline: Add reporting of runtime left & ...") This would be used to beautify scheduler syscall arguments and not to affect builds of other tools (e.g. objtool). Please see tools/include/uapi/README. Reviewed-by: Ian Rogers <irogers@google.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
13 daysperf trace: Sync uapi/linux/mount.h with the kernel sourceNamhyung Kim1-0/+1
To pick up changes from: 5e8969bd19271241 ("mount: add FSMOUNT_NAMESPACE") This would be used to beautify mount syscall arguments and not to affect builds of other tools (e.g. objtool). Please see tools/include/uapi/README. Reviewed-by: Ian Rogers <irogers@google.com> Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
13 daysperf trace: Sync uapi/linux/fs.h with the kernel sourceNamhyung Kim1-0/+12
To pick up changes from: 1f662195dbc07a66 ("fs: add generic FS_IOC_SHUTDOWN definitions") This would be used to beautify filesystem syscall arguments and not to affect builds of other tools (e.g. objtool). Please see tools/include/uapi/README. Reviewed-by: Ian Rogers <irogers@google.com> Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
13 daysperf trace: Sync linux/socket.h with the kernel sourceNamhyung Kim1-1/+1
To pick up changes from: c66e0f453d1afa82 ("net: use ktime_t in struct scm_timestamping_internal") This would be used to beautify networking syscall arguments and not to affect builds of other tools (e.g. objtool). Please see tools/include/uapi/README. Reviewed-by: Ian Rogers <irogers@google.com> Cc: netdev@vger.kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
14 daysMerge tag 'net-7.1-rc4' of ↵Linus Torvalds4-5/+95
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from netfilter. Previous releases - regressions: - ethtool: fix NULL pointer dereference in phy_reply_size - netfilter: - allocate hook ops while under mutex - close dangling table module init race - restore nf_conntrack helper propagation via expectation - tcp: - fix potential UAF in reqsk_timer_handler(). - fix out-of-bounds access for twsk in tcp_ao_established_key(). - vsock: fix empty payload in tap skb for non-linear buffers - hsr: fix NULL pointer dereference in hsr_get_node_data() - eth: - cortina: fix RX drop accounting - ice: fix locking in ice_dcb_rebuild() Previous releases - always broken: - napi: avoid gro timer misfiring at end of busypoll - sched: - dualpi2: initialize timer earlier in dualpi2_init() - sch_cbs: Call qdisc_reset for child qdisc - shaper: - fix ordering issue in net_shaper_commit() - reject handle IDs exceeding internal bit-width - ipv6: flowlabel: enforce per-netns limit for unprivileged callers - tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring - smc: avoid NULL deref of conn->lnk in smc_msg_event tracepoint - sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL - batman-adv: - reject new tp_meter sessions during teardown - purge non-released claims - eth: - i40e: cleanup PTP registration on probe failure - idpf: fix double free and use-after-free in aux device error paths - ena: fix potential use-after-free in get_timestamp" * tag 'net-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (88 commits) net: phy: DP83TC811: add reading of abilities net: tls: prevent chain-after-chain in plain text SG net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring net/smc: reject CHID-0 ACCEPT that matches an empty ism_dev slot macsec: use rcu_work to defer TX SA crypto cleanup out of softirq macsec: use rcu_work to defer RX SA crypto cleanup out of softirq macsec: introduce dedicated workqueue for SA crypto cleanup net: net_failover: Fix the deadlock in slave register MAINTAINERS: update atlantic driver maintainer selftests/tc-testing: Add QFQ/CBS qlen underflow test net/sched: sch_cbs: Call qdisc_reset for child qdisc FDDI: defza: Sanitise the reset safety timer net: ethernet: ravb: Do not check URAM suspension when WoL is active ethtool: fix ethnl_bitmap32_not_zero() bit interval semantics net/smc: avoid NULL deref of conn->lnk in smc_msg_event tracepoint net/smc: fix sleep-inside-lock in __smc_setsockopt() causing local DoS net: atm: fix skb leak in sigd_send() default branch net: ethtool: phy: avoid NULL deref when PHY driver is unbound net: atlantic: preserve PCI wake-from-D3 on shutdown when WOL enabled net: shaper: reject QUEUE scope handle with missing id ...
14 daysbpf: Use array_map_meta_equal for percpu array inner map replacementGuannan Wang1-0/+57
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: db69718b8efa ("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>
14 daysselftests: ovpn: reduce remaining ping flood countsRalf Lici3-6/+6
Commit 201ba706318d ("selftests: ovpn: reduce ping count in test.sh") lowered the baseline traffic flood ping count to avoid flakes on slower CI instances, however some instances were left out. Apply the same limit to the remaining ovpn selftest flood pings that still request 500 packets. Fixes: 201ba706318d ("selftests: ovpn: reduce ping count in test.sh") Signed-off-by: Ralf Lici <ralf@mandelbit.com> Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
2026-05-14selftests/tc-testing: Add QFQ/CBS qlen underflow testVictor Nogueira1-0/+41
Since CBS was not calling reset for its child qdisc, there are scenarios where it could cause an underflow on its parent's qlen/backlog. When the parent is QFQ, a null-ptr deref could occur. Add a test case that reproduces the underflow followed by a null-ptr deref scenario. Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Victor Nogueira <victor@mojatatu.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-14mm/memory: fix spurious warning when unmapping device-private/exclusive pagesAlistair Popple1-0/+50
Device private and exclusive entries are only supported for anonymous folios. This condition is tested in __migrate_device_pages() and make_device_exclusive() using folio_test_anon(). However the unmap path tests this assumption using vma_is_anonymous(). This is wrong because whilst anonymous VMAs can only contain folios where folio_test_anon() is true the opposite relation does not hold. A folio for which folio_test_anon() is true does not imply vma_is_anonymous() is true. Such a condition can occur if for example a folio is part of a private filebacked mapping. In this case vma_is_anonymous() is false as the mapping is filebacked, but folio_test_anon() may be true, thus permitting devices to migrate the folio to device private memory. This can lead to the following spurious warnings during process teardown: [ 772.737706] ------------[ cut here ]------------ [ 772.739201] WARNING: mm/memory.c:1754 at unmap_page_range.cold+0x26/0x18a, CPU#17: hmm-tests/2041 [ 772.742050] Modules linked in: test_hmm nvidia_uvm(O) nvidia(O) [ 772.743959] CPU: 17 UID: 0 PID: 2041 Comm: hmm-tests Tainted: G W O 7.0.0+ #387 PREEMPT(full) [ 772.747104] Tainted: [W]=WARN, [O]=OOT_MODULE [ 772.748509] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.17.0-0-gb52ca86e094d-prebuilt.qemu.org 04/01/2014 [ 772.752117] RIP: 0010:unmap_page_range.cold+0x26/0x18a [ 772.753780] Code: 7e fe ff ff 48 89 4c 24 78 4c 89 44 24 38 e8 f2 ff b1 00 48 8b 4c 24 78 4c 8b 44 24 38 48 8b 44 24 18 48 83 78 48 00 74 04 90 <0f> 0b 90 48 89 ca b8 ff ff 37 00 48 c1 ea 03 48 c1 e0 2a 80 3c 02 [ 772.759602] RSP: 0018:ffff888112607550 EFLAGS: 00010286 [ 772.761310] RAX: ffff88811bbf4dc0 RBX: dffffc0000000000 RCX: ffffea03e9bfffd8 [ 772.763583] RDX: 1ffff1102377e9c1 RSI: 0000000000000008 RDI: ffff88811bbf4e08 [ 772.765914] RBP: 0000000000000006 R08: ffff8881059f7448 R09: ffffed10224c0e68 [ 772.768184] R10: ffff888112607347 R11: 0000000000000001 R12: 0000000000000001 [ 772.770461] R13: ffffea03e9bfffc0 R14: ffff888112607908 R15: ffffea03e9bfffc0 [ 772.772782] FS: 00007f327caa2780(0000) GS:ffff888427b7d000(0000) knlGS:0000000000000000 [ 772.775328] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 772.777187] CR2: 00007f327ca89000 CR3: 00000001994d5000 CR4: 00000000000006f0 [ 772.779135] Call Trace: [ 772.779792] <TASK> [ 772.780317] ? dmirror_interval_invalidate+0x1a3/0x290 [test_hmm] [ 772.781873] ? vm_normal_page_pud+0x2b0/0x2b0 [ 772.782992] ? __rwlock_init+0x150/0x150 [ 772.784006] ? lock_release+0x216/0x2b0 [ 772.785008] ? __mmu_notifier_invalidate_range_start+0x505/0x6e0 [ 772.786522] ? lock_release+0x216/0x2b0 [ 772.787498] ? unmap_single_vma+0xb6/0x210 [ 772.788573] unmap_vmas+0x27d/0x520 [ 772.789506] ? unmap_single_vma+0x210/0x210 [ 772.790607] ? mas_update_gap.part.0+0x620/0x620 [ 772.791834] unmap_region+0x19e/0x350 [ 772.792769] ? remove_vma+0x130/0x130 [ 772.793684] ? mas_alloc_nodes+0x1f2/0x300 [ 772.794730] vms_complete_munmap_vmas+0x8c1/0xe20 [ 772.795926] ? unmap_region+0x350/0x350 [ 772.796917] do_vmi_align_munmap+0x36a/0x4e0 [ 772.798018] ? lock_release+0x216/0x2b0 [ 772.799024] ? vma_shrink+0x620/0x620 [ 772.799983] do_vmi_munmap+0x150/0x2c0 [ 772.800939] __vm_munmap+0x161/0x2c0 [ 772.801872] ? expand_downwards+0xd60/0xd60 [ 772.802948] ? clockevents_program_event+0x1ef/0x540 [ 772.804217] ? lock_release+0x216/0x2b0 [ 772.805158] __x64_sys_munmap+0x59/0x80 [ 772.805776] do_syscall_64+0xfc/0x670 [ 772.806336] ? irqentry_exit+0xda/0x580 [ 772.806976] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 772.807772] RIP: 0033:0x7f327cbb2717 [ 772.808323] Code: 73 01 c3 48 8b 0d f9 76 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c9 76 0d 00 f7 d8 64 89 01 48 [ 772.811337] RSP: 002b:00007ffde7f57d38 EFLAGS: 00000202 ORIG_RAX: 000000000000000b [ 772.812564] RAX: ffffffffffffffda RBX: 00007f327cc9c000 RCX: 00007f327cbb2717 [ 772.813733] RDX: 0000000000000000 RSI: 0000000000400000 RDI: 00007f327c289000 [ 772.814867] RBP: 0000000000421360 R08: 000000000000001a R09: 0000000000000000 [ 772.815991] R10: 0000000000000003 R11: 0000000000000202 R12: 00007ffde7f57d74 [ 772.817121] R13: 00007f327c689010 R14: 0000000000100000 R15: 00007f327c289000 [ 772.818272] </TASK> [ 772.818614] irq event stamp: 0 [ 772.819159] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 772.820174] hardirqs last disabled at (0): [<ffffffff82a57ab3>] copy_process+0x19f3/0x6440 [ 772.821511] softirqs last enabled at (0): [<ffffffff82a57b00>] copy_process+0x1a40/0x6440 [ 772.822869] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 772.823871] ---[ end trace 0000000000000000 ]--- Fix this by using the same check for folio_test_anon() in zap_nonpresent_ptes(). Also add a hmm-test case for this. Link: https://lore.kernel.org/20260501065116.2057242-1-apopple@nvidia.com Fixes: 999dad824c39 ("mm/shmem: persist uffd-wp bit across zapping for file-backed") Signed-off-by: Alistair Popple <apopple@nvidia.com> Reported-by: Arsen Arsenović <aarsenovic@baylibre.com> Reviewed-by: Balbir Singh <balbirs@nvidia.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Peter Xu <peterx@redhat.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-05-14selftests/mm: run_vmtests.sh: fix destructive tests invocationLuiz Capitulino1-1/+1
Destructive tests should be invoked with -d command-line option, but this won't work today since 'd' is missing in getopts command-line. This commit fixes it. Link: https://lore.kernel.org/214fd9e4-5398-4c26-859e-c982c2e277c3@redhat.com Fixes: f16ff3b692ad ("selftests/mm: run_vmtests.sh: add missing tests") Signed-off-by: Luiz Capitulino <luizcap@redhat.com> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: SeongJae Park <sj@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-05-14Merge tag 'sched_ext-for-7.1-rc3-fixes' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext Pull sched_ext fixes from Tejun Heo: "The bulk of this is hardening of the new sub-scheduler infrastructure. - UAFs and lifecycle bugs on the sub-sched attach/detach paths: parent sub_kset freed under a racing child, list_del_rcu on an uninitialized list head, ops->priv stomped by concurrent attach/detach, and a UAF in the init-failure error path - Task state-machine reorg closing concurrent enable-vs-dead races: a task exiting during the unlocked init window could trip NULL ops derefs or skip exit_task() cleanup - A scx_link_sched() self-deadlock on scx_sched_lock - isolcpus: stop dereferencing the now-RCU-protected HK_TYPE_DOMAIN cpumask without RCU, and stop rejecting BPF schedulers when only cpuset isolated partitions are active - PREEMPT_RT: disable irq_work runs in hardirq context so dumps show the failing task rather than the irq_work kthread - Assorted !CONFIG_EXT_SUB_SCHED, randconfig, and selftest build fixes" * tag 'sched_ext-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: sched_ext: Use HK_TYPE_DOMAIN_BOOT to detect isolcpus= domain isolation sched_ext: Defer sub_kset base put to scx_sched_free_rcu_work sched_ext: INIT_LIST_HEAD() &sch->all in scx_alloc_and_add_sched() sched_ext: Drop NONE early return in scx_disable_and_exit_task() sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path sched_ext: Clear ops->priv on scx_alloc_and_add_sched() error paths sched_ext: Fix ops->priv clobber on concurrent attach/detach selftests/sched_ext: Fix build error in dequeue selftest sched_ext: Handle SCX_TASK_NONE in disable/switched_from paths sched_ext: Close sub-sched init race with post-init DEAD recheck sched_ext: Close root-enable vs sched_ext_dead() race with SCX_TASK_INIT_BEGIN sched_ext: Replace SCX_TASK_OFF_TASKS flag with SCX_TASK_DEAD state sched_ext: Inline scx_init_task() and move RESET_RUNNABLE_AT into scx_set_task_state() sched_ext: Cleanups in preparation for the SCX_TASK_INIT_BEGIN/DEAD work sched_ext: Use IRQ_WORK_INIT_HARD() to initialize sch->disable_irq_work sched_ext: Fix !CONFIG_EXT_SUB_SCHED build warnings sched_ext: Drop unused scx_find_sub_sched() stub sched_ext: Move scx_error() out of scx_link_sched()'s lock region
2026-05-14Merge tag 'cgroup-for-7.1-rc3-fixes' of ↵Linus Torvalds3-6/+11
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fixes from Tejun Heo: - cpuset fixes: - Partition invalidation could return CPUs still in use by sibling partitions, producing overlapping effective_cpus - cpuset_can_attach() over-reserved DL bandwidth on moves that stayed within the same root domain - Pending DL migration state leaked into later attaches when a later can_attach() check failed - Reorder PF_EXITING and __GFP_HARDWALL checks so dying tasks can allocate from any node and exit quickly - dmem: propagate -ENOMEM instead of spinning forever when the fallback pool allocation also fails - selftests/cgroup: percpu test error-path leak, bogus numeric comparison of cpuset strings, and a zero-length read() that silently passed OOM-kill tests * tag 'cgroup-for-7.1-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup/cpuset: Return only actually allocated CPUs during partition invalidation selftests/cgroup: Fix error path leaks in test_percpu_basic cgroup/cpuset: Reserve DL bandwidth only for root-domain moves cgroup/cpuset: Reset DL migration state on can_attach() failure selftests/cgroup: Fix string comparison in write_test selftests/cgroup: Fix cg_read_strcmp() empty string comparison cgroup/dmem: Return -ENOMEM on failed pool preallocation cgroup/cpuset: move PF_EXITING check before __GFP_HARDWALL in cpuset_current_node_allowed()
2026-05-13Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2-2/+9
Pull kvm fixes from Paolo Bonzini: "arm64: - Add the pKVM side of the workaround for ARM's erratum 4193714, provided that the EL3 firmware does its part of the job. KVM will refuse to initialise otherwise - Correctly handle 52bit VAs for guest EL2 stage-1 translations when running under NV with E2H==0 - Correctly deal with permission faults in guest_memfd memslots - Fix the steal-time selftest after the infrastructure was reworked - Make sure the host cannot pass a non-sensical clock update to the EL2 tracing infrastructure - Appoint Steffen Eiden as a reviewer in anticipation of the KVM/s390 ability to run arm64 guests, which will inevitably lead to arm64 code being directly used on s390 - Make sure that EL2 is configured with both exception entry and exit being Context Synchronization Events - Handle the current vcpu being NULL on EL2 panic - Fix the selftest_vcpu memcache being empty at the point of donation or sharing - Check that the memcache has enough capacity before engaging on the share/donate path - Fix __deactivate_fgt() to use its parameter rather than a variable in the macro context s390: - Fix array overrun with large amounts of PCI devices x86: - Never use L0's PAUSE loop exiting while L2 is running, since it's unlikely that a nested guest will help solving the hypervisor's spinlock contention - Fix emulation of MOVNTDQA - Fix typo in Xen hypercall tracepoint - Add back an optimization that was left behind when recently fixing a bug - Add module parameter to disable CET, whose implementation seems to have issues. For now it remains enabled by default Generic: - Reject offset causing an unsigned overflow in kvm_reset_dirty_gfn() Documentation: - Update stale links Selftests: - Fix guest_memfd_test with host page size > guest page size" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (22 commits) KVM: VMX: introduce module parameter to disable CET KVM: x86: Swap the dst and src operand for MOVNTDQA KVM: x86: use again the flush argument of __link_shadow_page() KVM: selftests: Ensure gmem file sizes are multiple of host page size Documentation: kvm: update links in the references section of AMD Memory Encryption KVM: nSVM: Never use L0's PAUSE loop exiting while L2 is running KVM: x86: Fix Xen hypercall tracepoint argument assignment KVM: Reject wrapped offset in kvm_reset_dirty_gfn() KVM: arm64: Pre-check vcpu memcache for host->guest donate KVM: arm64: Pre-check vcpu memcache for host->guest share KVM: arm64: Seed pkvm_ownership_selftest vcpu memcache KVM: arm64: Fix __deactivate_fgt macro parameter typo KVM: arm64: Guard against NULL vcpu on VHE hyp panic path KVM: arm64: Make EL2 exception entry and exit context-synchronization events MAINTAINERS: Add Steffen as reviewer for KVM/arm64 KVM: arm64: Remove potential UB on nvhe tracing clock update KVM: selftests: arm64: Fix steal_time test after UAPI refactoring KVM: arm64: Handle permission faults with guest_memfd KVM: arm64: nv: Consider the DS bit when translating TCR_EL2 KVM: arm64: Work around C1-Pro erratum 4193714 for protected guests ...
2026-05-13selftests/cgroup: Fix error path leaks in test_percpu_basicYu Miao1-3/+7
When cg_name_indexed() returns NULL partway through the child creation loop, the code returned -1 without running cleanup_children and cleanup. That left the `parent` pathname allocation unreleased and did not remove child cgroup directories already created under the parent. Fix by jumping to cleanup_children instead of returning. When cg_create() fails, `child` (the pathname from cg_name_indexed()) was not freed before cleanup_children. Fix by freeing `child` before branching to cleanup_children. Fixes: 90631e1dea55 ("kselftests: cgroup: add perpcu memory accounting test") Signed-off-by: Yu Miao <yumiao@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-13selftests/rdma: explicitly skip tests when required modules are missingYi Lai4-4/+21
Currently, the rdma rxe selftests fail with an exit code of 1 when required kernel modules are not present. This causes spurious failures in environments where these modules might not be compiled or available. Include the standard kselftest 'ktap_helpers.sh' and replace the hardcoded error exits with '$KSFT_SKIP'. This ensures the tests are properly marked as skipped rather than failed. Fixes: e01027cab38a ("RDMA/rxe: Add testcase for net namespace rxe") Signed-off-by: Yi Lai <yi1.lai@intel.com> Link: https://patch.msgid.link/20260507125106.3114167-1-yi1.lai@intel.com Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev> Signed-off-by: Leon Romanovsky <leon@kernel.org>
2026-05-13selftests: ublk: cap nthreads to kernel's actual nr_hw_queuesMing Lei1-0/+11
dev->nthreads is derived from the user-requested queue count before the ADD command, but the kernel may reduce nr_hw_queues (capped to nr_cpu_ids). When the VM has fewer CPUs than requested queues, the daemon creates more handler threads than there are kernel queues. In non-batch mode, the extra threads access uninitialized queues (q_depth=0), submit zero io_uring SQEs, and block forever in io_cqring_wait. In batch mode, the extra threads cause similar hangs during device removal. In both cases, the stuck threads prevent the daemon from closing the char device, holding the last ublk_device reference and causing ublk_ctrl_del_dev() to hang in wait_event_interruptible(). Fix by capping dev->nthreads to the kernel-returned nr_hw_queues after the ADD command completes. per_io_tasks mode is excluded because threads interleave across all queues, so nthreads > nr_hw_queues is valid. Fixes: abe54c160346 ("selftests: ublk: kublk: decouple ublk_queues from ublk server threads") Signed-off-by: Ming Lei <tom.leiming@gmail.com> Link: https://patch.msgid.link/20260513101941.1373998-1-tom.leiming@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
2026-05-12KVM: selftests: Ensure gmem file sizes are multiple of host page sizeSean Christopherson1-2/+7
When creating a guest_memfd file and associated memslot to validate shared guest memory, size the file+memslot to the maximum of the host or guest page size. Attempting to allocate a single guest page will fail if the host page size is greater than the guest page size, as KVM requires that the size of memslots and guest_memfd files are a multiple of the host page size. For simplicity, verify the entire file can be shared between guest and host, e.g. instead of trying to validate "partial" mappings. Fixes: 42188667be38 ("KVM: selftests: Add guest_memfd testcase to fault-in on !mmap()'d memory") Reported-by: Zenghui Yu <zenghui.yu@linux.dev> Closes: https://lore.kernel.org/all/0064952b-048c-455d-ad89-e27e5cb82591@linux.dev Signed-off-by: Sean Christopherson <seanjc@google.com> Message-ID: <20260512155634.772602-1-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2026-05-12tools: ynl: add scope qualifier for definitionsJakub Kicinski1-2/+29
Using definitions in kernel policies is awkward right now. On one hand we want defines for max values and such. On the other we don't have a way of adding kernel-only defines. Adding unnecessary defines to uAPI is a bad idea, we won't be able to delete them. And when it comes to policy user space should just query it via the policy dump, not use hard coded defines. Add a "scope" property to definitions, which will let us tell the codegen that a definition is for kernel use only. Support following values: - uapi: render into the uAPI header (default, today's behavior) - kernel: render to kernel header only - user: same as kernel but for the user-side generated header Definitions may have a header property (definition is "external", provided by existing header). Extend the scope to headers, too. If definition has both scope and header properties we will only generate the includes in the right scope. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://patch.msgid.link/20260510192904.3987113-8-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-05-12selftests: drv-net: add shaper test for duplicate leavesJakub Kicinski1-2/+22
Add test exercising duplicate leaves. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Link: https://patch.msgid.link/20260510192904.3987113-5-kuba@kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2026-05-12x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cachePrathyushi Nangia1-1/+2
Make sure resources are not improperly shared in the op cache and cause instruction corruption this way. Signed-off-by: Prathyushi Nangia <prathyushi.nangia@amd.com> Co-developed-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-05-11selftests/bpf: Add test for large offset bpf-to-bpf callYazhou Tang2-0/+68
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>
2026-05-11selftests/sched_ext: Fix build error in dequeue selftestAndrea Righi1-0/+1
Building the dequeue selftest with newer compilers (e.g., gcc 16) triggers the following error: dequeue.c:28:22: error: variable 'sum' set but not used The 'volatile' qualifier prevents the writes from being optimized away, but does not silence the unused variable 'sum' is indeed only written and never read. Consume 'sum' via an empty asm() with a register input constraint. This forces the compiler to keep the accumulated value (preserving the CPU stress loop) and avoiding the build error. Fixes: 658ad2259b3e ("selftests/sched_ext: Add test to validate ops.dequeue() semantics") Signed-off-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-11selftests/cgroup: Fix string comparison in write_testHongfu Li1-1/+1
Use string comparison (!=) instead of numeric comparison (-ne) for cpuset values like "0-1". For example: $ [[ "0-1" != "2-3" ]] && echo "true" || echo "false" true $ [[ "0-1" -ne "2-3" ]] && echo "true" || echo "false" false Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-11selftests/cgroup: Fix cg_read_strcmp() empty string comparisonHongfu Li1-2/+3
cg_read_strcmp() allocated a buffer sized to strlen(expected) + 1, then passed it to read_text() which calls read(fd, buf, size-1). When comparing against an empty string (""), strlen("") = 0 gives a 1-byte buffer, and read() is asked to read 0 bytes. The file content is never actually read, so strcmp("", buf) always returns 0 regardless of the real content. This caused cg_test_proc_killed() to always report the cgroup as empty immediately, making OOM tests pass without verifying that processes were killed. Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-10tools/ynl: add missing uapi header deps in Makefile.depsStanislav Fomichev1-1/+3
ethtool.h includes linux/typelimits.h which is a relatively new header not yet shipped in most distro kernel-header packages. Without the explicit entry, the build silently falls through to -idirafter. dev_energymodel.h is a new YNL family whose uapi header is not in system paths at all and was missing a CFLAGS entry entirely. Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20260508204114.205896-2-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-10Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfLinus Torvalds7-3/+93
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
2026-05-09Merge tag 'sched-urgent-2026-05-09' of ↵Linus Torvalds11-43/+208
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Ingo Molnar: - Fix spurious failures in rseq self-tests (Mark Brown) - Fix rseq rseq::cpu_id_start ABI regression due to TCMalloc's creative use of the supposedly read-only field The fix is to introduce a new ABI variant based on a new (larger) rseq area registration size, to keep the TCMalloc use of rseq backwards compatible on new kernels (Thomas Gleixner) - Fix wakeup_preempt_fair() for not waking up task (Vincent Guittot) - Fix s64 mult overflow in vruntime_eligible() (Zhan Xusheng) * tag 'sched-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/fair: Fix wakeup_preempt_fair() for not waking up task sched/fair: Fix overflow in vruntime_eligible() selftests/rseq: Expand for optimized RSEQ ABI v2 rseq: Reenable performance optimizations conditionally rseq: Implement read only ABI enforcement for optimized RSEQ V2 mode selftests/rseq: Validate legacy behavior selftests/rseq: Make registration flexible for legacy and optimized mode selftests/rseq: Skip tests if time slice extensions are not available rseq: Revert to historical performance killing behaviour rseq: Don't advertise time slice extensions if disabled rseq: Protect rseq_reset() against interrupts rseq: Set rseq::cpu_id_start to 0 on unregistration selftests/rseq: Don't run tests with runner scripts outside of the scripts
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