lwn.git/tools/testing, branch docs-6.0

Merge tag 'random-5.19-rc2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

2022-06-12T17:33:38+00:00

Pull random number generator fixes from Jason Donenfeld: - A fix for a 5.19 regression for a case in which early device tree initializes the RNG, which flips a static branch. On most plaforms, jump labels aren't initialized until much later, so this caused splats. On a few mailing list threads, we cooked up easy fixes for arm64, arm32, and risc-v. But then things looked slightly more involved for xtensa, powerpc, arc, and mips. And at that point, when we're patching 7 architectures in a place before the console is even available, it seems like the cost/risk just wasn't worth it. So random.c works around it now by checking the already exported `static_key_initialized` boolean, as though somebody already ran into this issue in the past. I'm not super jazzed about that; it'd be prettier to not have to complicate downstream code. But I suppose it's practical. - A few small code nits and adding a missing __init annotation. - A change to the default config values to use the cpu and bootloader's seeds for initializing the RNG earlier. This brings them into line with what all the distros do (Fedora/RHEL, Debian, Ubuntu, Gentoo, Arch, NixOS, Alpine, SUSE, and Void... at least), and moreover will now give us test coverage in various test beds that might have caught the above device tree bug earlier. - A change to WireGuard CI's configuration to increase test coverage around the RNG. - A documentation comment fix to unrelated maintainerless CRC code that I was asked to take, I guess because it has to do with polynomials (which the RNG thankfully no longer uses). * tag 'random-5.19-rc2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: wireguard: selftests: use maximum cpu features and allow rng seeding random: remove rng_has_arch_random() random: credit cpu and bootloader seeds by default random: do not use jump labels before they are initialized random: account for arch randomness in bits random: mark bootloader randomness code as __init random: avoid checking crng_ready() twice in random_init() crc-itu-t: fix typo in CRC ITU-T polynomial comment

wireguard: selftests: use maximum cpu features and allow rng seeding

2022-06-11T13:38:08+00:00

By forcing the maximum CPU that QEMU has available, we expose additional capabilities, such as the RNDR instruction, which increases test coverage. This then allows the CI to skip the fake seeding step in some cases. Also enable STRICT_KERNEL_RWX to catch issues related to early jump labels when the RNG is initialized at boot. Signed-off-by: Jason A. Donenfeld

Merge tag 'net-5.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-06-09T19:06:52+00:00

Pull networking fixes from Paolo Abeni: "Including fixes from bpf and netfilter. Current release - regressions: - eth: amt: fix possible null-ptr-deref in amt_rcv() Previous releases - regressions: - tcp: use alloc_large_system_hash() to allocate table_perturb - af_unix: fix a data-race in unix_dgram_peer_wake_me() - nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling - eth: ixgbe: fix unexpected VLAN rx in promisc mode on VF Previous releases - always broken: - ipv6: fix signed integer overflow in __ip6_append_data - netfilter: - nat: really support inet nat without l3 address - nf_tables: memleak flow rule from commit path - bpf: fix calling global functions from BPF_PROG_TYPE_EXT programs - openvswitch: fix misuse of the cached connection on tuple changes - nfc: nfcmrvl: fix memory leak in nfcmrvl_play_deferred - eth: altera: fix refcount leak in altera_tse_mdio_create Misc: - add Quentin Monnet to bpftool maintainers" * tag 'net-5.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits) net: amd-xgbe: fix clang -Wformat warning tcp: use alloc_large_system_hash() to allocate table_perturb net: dsa: realtek: rtl8365mb: fix GMII caps for ports with internal PHY net: dsa: mv88e6xxx: correctly report serdes link failure net: dsa: mv88e6xxx: fix BMSR error to be consistent with others net: dsa: mv88e6xxx: use BMSR_ANEGCOMPLETE bit for filling an_complete net: altera: Fix refcount leak in altera_tse_mdio_create net: openvswitch: fix misuse of the cached connection on tuple changes net: ethernet: mtk_eth_soc: fix misuse of mem alloc interface netdev[napi]_alloc_frag ip_gre: test csum_start instead of transport header au1000_eth: stop using virt_to_bus() ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg ipv6: Fix signed integer overflow in __ip6_append_data nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred nfc: st21nfca: fix incorrect sizing calculations in EVT_TRANSACTION nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling nfc: st21nfca: fix incorrect validating logic in EVT_TRANSACTION net: ipv6: unexport __init-annotated seg6_hmac_init() net: xfrm: unexport __init-annotated xfrm4_protocol_init() net: mdio: unexport __init-annotated mdio_bus_init() ...

Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

2022-06-09T03:31:21+00:00

Daniel Borkmann says: ==================== pull-request: bpf 2022-06-09 We've added 6 non-merge commits during the last 2 day(s) which contain a total of 8 files changed, 49 insertions(+), 15 deletions(-). The main changes are: 1) Fix an illegal copy_to_user() attempt seen by syzkaller through arm64 BPF JIT compiler, from Eric Dumazet. 2) Fix calling global functions from BPF_PROG_TYPE_EXT programs by using the correct program context type, from Toke Høiland-Jørgensen. 3) Fix XSK TX batching invalid descriptor handling, from Maciej Fijalkowski. 4) Fix potential integer overflows in multi-kprobe link code by using safer kvmalloc_array() allocation helpers, from Dan Carpenter. 5) Add Quentin as bpftool maintainer, from Quentin Monnet. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: MAINTAINERS: Add a maintainer for bpftool xsk: Fix handling of invalid descriptors in XSK TX batching API selftests/bpf: Add selftest for calling global functions from freplace bpf: Fix calling global functions from BPF_PROG_TYPE_EXT programs bpf: Use safer kvmalloc_array() where possible bpf, arm64: Clear prog->jited_len along prog->jited ==================== Link: https://lore.kernel.org/r/20220608234133.32265-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2022-06-08T16:16:31+00:00

Pull KVM fixes from Paolo Bonzini: - syzkaller NULL pointer dereference - TDP MMU performance issue with disabling dirty logging - 5.14 regression with SVM TSC scaling - indefinite stall on applying live patches - unstable selftest - memory leak from wrong copy-and-paste - missed PV TLB flush when racing with emulation * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: do not report a vCPU as preempted outside instruction boundaries KVM: x86: do not set st->preempted when going back to user space KVM: SVM: fix tsc scaling cache logic KVM: selftests: Make hyperv_clock selftest more stable KVM: x86/MMU: Zap non-leaf SPTEs when disabling dirty logging x86: drop bogus "cc" clobber from __try_cmpxchg_user_asm() KVM: x86/mmu: Check every prev_roots in __kvm_mmu_free_obsolete_roots() entry/kvm: Exit to user mode when TIF_NOTIFY_SIGNAL is set KVM: Don't null dereference ops->destroy

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

2022-06-08T00:49:48+00:00

Pablo Neira Ayuso says: ==================== Netfilter fixes for net 1) Fix NAT support for NFPROTO_INET without layer 3 address, from Florian Westphal. 2) Use kfree_rcu(ptr, rcu) variant in nf_tables clean_net path. 3) Use list to collect flowtable hooks to be deleted. 4) Initialize list of hook field in flowtable transaction. 5) Release hooks on error for flowtable updates. 6) Memleak in hardware offload rule commit and abort paths. 7) Early bail out in case device does not support for hardware offload. This adds a new interface to net/core/flow_offload.c to check if the flow indirect block list is empty. * git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf: netfilter: nf_tables: bail out early if hardware offload is not supported netfilter: nf_tables: memleak flow rule from commit path netfilter: nf_tables: release new hooks on unsupported flowtable flags netfilter: nf_tables: always initialize flowtable hook list in transaction netfilter: nf_tables: delete flowtable hooks via transaction list netfilter: nf_tables: use kfree_rcu(ptr, rcu) to release hooks in clean_net path netfilter: nat: really support inet nat without l3 address ==================== Link: https://lore.kernel.org/r/20220606212055.98300-1-pablo@netfilter.org Signed-off-by: Jakub Kicinski

selftests/bpf: Add selftest for calling global functions from freplace

2022-06-07T17:41:20+00:00

Add a selftest that calls a global function with a context object parameter from an freplace function to check that the program context type is correctly converted to the freplace target when fetching the context type from the kernel BTF. v2: - Trim includes - Get rid of global function - Use __noinline Signed-off-by: Toke Høiland-Jørgensen Link: https://lore.kernel.org/r/20220606075253.28422-2-toke@redhat.com Signed-off-by: Alexei Starovoitov

KVM: selftests: Make hyperv_clock selftest more stable

2022-06-07T15:28:50+00:00

hyperv_clock doesn't always give a stable test result, especially with AMD CPUs. The test compares Hyper-V MSR clocksource (acquired either with rdmsr() from within the guest or KVM_GET_MSRS from the host) against rdtsc(). To increase the accuracy, increase the measured delay (done with nop loop) by two orders of magnitude and take the mean rdtsc() value before and after rdmsr()/KVM_GET_MSRS. Reported-by: Maxim Levitsky Signed-off-by: Vitaly Kuznetsov Reviewed-by: Maxim Levitsky Tested-by: Maxim Levitsky Message-Id: <20220601144322.1968742-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini

selftests net: fix bpf build error

2022-06-07T11:19:51+00:00

bpf_helpers.h has been moved to tools/lib/bpf since 5.10, so add more including path. Fixes: edae34a3ed92 ("selftests net: add UDP GRO fraglist + bpf self-tests") Reported-by: kernel test robot Signed-off-by: Lina Wang Acked-by: Song Liu Acked-by: Paolo Abeni Link: https://lore.kernel.org/r/20220606064517.8175-1-lina.wang@mediatek.com Signed-off-by: Paolo Abeni

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2022-06-03T21:05:34+00:00

Pull arm64 fixes from Catalin Marinas: "Most of issues addressed were introduced during this merging window. - Initialise jump labels before setup_machine_fdt(), needed by commit f5bda35fba61 ("random: use static branch for crng_ready()"). - Sparse warnings: missing prototype, incorrect __user annotation. - Skip SVE kselftest if not sufficient vector lengths supported" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: kselftest/arm64: signal: Skip SVE signal test if not enough VLs supported arm64: Initialize jump labels before setup_machine_fdt() arm64: hibernate: Fix syntax errors in comments arm64: Remove the __user annotation for the restore_za_context() argument ftrace/fgraph: fix increased missing-prototypes warnings