Commit Graph

6948 Commits

Author SHA1 Message Date
Linus Torvalds
c7d1022326 Networking fixes for 5.14-rc4, including fixes from bpf, can, WiFi (mac80211)
and netfilter trees.
 
 Current release - regressions:
 
  - mac80211: fix starting aggregation sessions on mesh interfaces
 
 Current release - new code bugs:
 
  - sctp: send pmtu probe only if packet loss in Search Complete state
 
  - bnxt_en: add missing periodic PHC overflow check
 
  - devlink: fix phys_port_name of virtual port and merge error
 
  - hns3: change the method of obtaining default ptp cycle
 
  - can: mcba_usb_start(): add missing urb->transfer_dma initialization
 
 Previous releases - regressions:
 
  - set true network header for ECN decapsulation
 
  - mlx5e: RX, avoid possible data corruption w/ relaxed ordering and LRO
 
  - phy: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811 PHY
 
  - sctp: fix return value check in __sctp_rcv_asconf_lookup
 
 Previous releases - always broken:
 
  - bpf:
        - more spectre corner case fixes, introduce a BPF nospec
          instruction for mitigating Spectre v4
        - fix OOB read when printing XDP link fdinfo
        - sockmap: fix cleanup related races
 
  - mac80211: fix enabling 4-address mode on a sta vif after assoc
 
  - can:
        - raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
        - j1939: j1939_session_deactivate(): clarify lifetime of
               session object, avoid UAF
        - fix number of identical memory leaks in USB drivers
 
  - tipc:
        - do not blindly write skb_shinfo frags when doing decryption
        - fix sleeping in tipc accept routine
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Networking fixes for 5.14-rc4, including fixes from bpf, can, WiFi
  (mac80211) and netfilter trees.

  Current release - regressions:

   - mac80211: fix starting aggregation sessions on mesh interfaces

  Current release - new code bugs:

   - sctp: send pmtu probe only if packet loss in Search Complete state

   - bnxt_en: add missing periodic PHC overflow check

   - devlink: fix phys_port_name of virtual port and merge error

   - hns3: change the method of obtaining default ptp cycle

   - can: mcba_usb_start(): add missing urb->transfer_dma initialization

  Previous releases - regressions:

   - set true network header for ECN decapsulation

   - mlx5e: RX, avoid possible data corruption w/ relaxed ordering and
     LRO

   - phy: re-add check for PHY_BRCM_DIS_TXCRXC_NOENRGY on the BCM54811
     PHY

   - sctp: fix return value check in __sctp_rcv_asconf_lookup

  Previous releases - always broken:

   - bpf:
       - more spectre corner case fixes, introduce a BPF nospec
         instruction for mitigating Spectre v4
       - fix OOB read when printing XDP link fdinfo
       - sockmap: fix cleanup related races

   - mac80211: fix enabling 4-address mode on a sta vif after assoc

   - can:
       - raw: raw_setsockopt(): fix raw_rcv panic for sock UAF
       - j1939: j1939_session_deactivate(): clarify lifetime of session
         object, avoid UAF
       - fix number of identical memory leaks in USB drivers

   - tipc:
       - do not blindly write skb_shinfo frags when doing decryption
       - fix sleeping in tipc accept routine"

* tag 'net-5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits)
  gve: Update MAINTAINERS list
  can: esd_usb2: fix memory leak
  can: ems_usb: fix memory leak
  can: usb_8dev: fix memory leak
  can: mcba_usb_start(): add missing urb->transfer_dma initialization
  can: hi311x: fix a signedness bug in hi3110_cmd()
  MAINTAINERS: add Yasushi SHOJI as reviewer for the Microchip CAN BUS Analyzer Tool driver
  bpf: Fix leakage due to insufficient speculative store bypass mitigation
  bpf: Introduce BPF nospec instruction for mitigating Spectre v4
  sis900: Fix missing pci_disable_device() in probe and remove
  net: let flow have same hash in two directions
  nfc: nfcsim: fix use after free during module unload
  tulip: windbond-840: Fix missing pci_disable_device() in probe and remove
  sctp: fix return value check in __sctp_rcv_asconf_lookup
  nfc: s3fwrn5: fix undefined parameter values in dev_err()
  net/mlx5: Fix mlx5_vport_tbl_attr chain from u16 to u32
  net/mlx5e: Fix nullptr in mlx5e_hairpin_get_mdev()
  net/mlx5: Unload device upon firmware fatal error
  net/mlx5e: Fix page allocation failure for ptp-RQ over SF
  net/mlx5e: Fix page allocation failure for trap-RQ over SF
  ...
2021-07-30 16:01:36 -07:00
Linus Torvalds
7e96bf4762 ARM:
- Fix MTE shared page detection
 
 - Enable selftest's use of PMU registers when asked to
 
 s390:
 
 - restore 5.13 debugfs names
 
 x86:
 
 - fix sizes for vcpu-id indexed arrays
 
 - fixes for AMD virtualized LAPIC (AVIC)
 
 - other small bugfixes
 
 Generic:
 
 - access tracking performance test
 
 - dirty_log_perf_test command line parsing fix
 
 - Fix selftest use of obsolete pthread_yield() in favour of sched_yield()
 
 - use cpu_relax when halt polling
 
 - fixed missing KVM_CLEAR_DIRTY_LOG compat ioctl
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "ARM:

   - Fix MTE shared page detection

   - Enable selftest's use of PMU registers when asked to

  s390:

   - restore 5.13 debugfs names

  x86:

   - fix sizes for vcpu-id indexed arrays

   - fixes for AMD virtualized LAPIC (AVIC)

   - other small bugfixes

  Generic:

   - access tracking performance test

   - dirty_log_perf_test command line parsing fix

   - Fix selftest use of obsolete pthread_yield() in favour of
     sched_yield()

   - use cpu_relax when halt polling

   - fixed missing KVM_CLEAR_DIRTY_LOG compat ioctl"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: add missing compat KVM_CLEAR_DIRTY_LOG
  KVM: use cpu_relax when halt polling
  KVM: SVM: use vmcb01 in svm_refresh_apicv_exec_ctrl
  KVM: SVM: tweak warning about enabled AVIC on nested entry
  KVM: SVM: svm_set_vintr don't warn if AVIC is active but is about to be deactivated
  KVM: s390: restore old debugfs names
  KVM: SVM: delay svm_vcpu_init_msrpm after svm->vmcb is initialized
  KVM: selftests: Introduce access_tracking_perf_test
  KVM: selftests: Fix missing break in dirty_log_perf_test arg parsing
  x86/kvm: fix vcpu-id indexed array sizes
  KVM: x86: Check the right feature bit for MSR_KVM_ASYNC_PF_ACK access
  docs: virt: kvm: api.rst: replace some characters
  KVM: Documentation: Fix KVM_CAP_ENFORCE_PV_FEATURE_CPUID name
  KVM: nSVM: Swap the parameter order for svm_copy_vmrun_state()/svm_copy_vmloadsave_state()
  KVM: nSVM: Rename nested_svm_vmloadsave() to svm_copy_vmloadsave_state()
  KVM: arm64: selftests: get-reg-list: actually enable pmu regs in pmu sublist
  KVM: selftests: change pthread_yield to sched_yield
  KVM: arm64: Fix detection of shared VMAs on guest fault
2021-07-29 09:42:09 -07:00
David S. Miller
fc16a5322e Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
pull-request: bpf 2021-07-29

The following pull-request contains BPF updates for your *net* tree.

We've added 9 non-merge commits during the last 14 day(s) which contain
a total of 20 files changed, 446 insertions(+), 138 deletions(-).

The main changes are:

1) Fix UBSAN out-of-bounds splat for showing XDP link fdinfo, from Lorenz Bauer.

2) Fix insufficient Spectre v4 mitigation in BPF runtime, from Daniel Borkmann,
   Piotr Krysiuk and Benedict Schlueter.

3) Batch of fixes for BPF sockmap found under stress testing, from John Fastabend.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-29 00:53:32 +01:00
David Matlack
c33e05d9b0 KVM: selftests: Introduce access_tracking_perf_test
This test measures the performance effects of KVM's access tracking.
Access tracking is driven by the MMU notifiers test_young, clear_young,
and clear_flush_young. These notifiers do not have a direct userspace
API, however the clear_young notifier can be triggered by marking a
pages as idle in /sys/kernel/mm/page_idle/bitmap. This test leverages
that mechanism to enable access tracking on guest memory.

To measure performance this test runs a VM with a configurable number of
vCPUs that each touch every page in disjoint regions of memory.
Performance is measured in the time it takes all vCPUs to finish
touching their predefined region.

Example invocation:

  $ ./access_tracking_perf_test -v 8
  Testing guest mode: PA-bits:ANY, VA-bits:48,  4K pages
  guest physical test memory offset: 0xffdfffff000

  Populating memory             : 1.337752570s
  Writing to populated memory   : 0.010177640s
  Reading from populated memory : 0.009548239s
  Mark memory idle              : 23.973131748s
  Writing to idle memory        : 0.063584496s
  Mark memory idle              : 24.924652964s
  Reading from idle memory      : 0.062042814s

Breaking down the results:

 * "Populating memory": The time it takes for all vCPUs to perform the
   first write to every page in their region.

 * "Writing to populated memory" / "Reading from populated memory": The
   time it takes for all vCPUs to write and read to every page in their
   region after it has been populated. This serves as a control for the
   later results.

 * "Mark memory idle": The time it takes for every vCPU to mark every
   page in their region as idle through page_idle.

 * "Writing to idle memory" / "Reading from idle memory": The time it
   takes for all vCPUs to write and read to every page in their region
   after it has been marked idle.

This test should be portable across architectures but it is only enabled
for x86_64 since that's all I have tested.

Reviewed-by: Ben Gardon <bgardon@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20210713220957.3493520-7-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27 16:59:00 -04:00
David Matlack
15b7b737de KVM: selftests: Fix missing break in dirty_log_perf_test arg parsing
There is a missing break statement which causes a fallthrough to the
next statement where optarg will be null and a segmentation fault will
be generated.

Fixes: 9e965bb75a ("KVM: selftests: Add backing src parameter to dirty_log_perf_test")
Reviewed-by: Ben Gardon <bgardon@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <20210713220957.3493520-6-dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-27 16:58:59 -04:00
Peter Collingbourne
0db282ba2c selftest: use mmap instead of posix_memalign to allocate memory
This test passes pointers obtained from anon_allocate_area to the
userfaultfd and mremap APIs.  This causes a problem if the system
allocator returns tagged pointers because with the tagged address ABI
the kernel rejects tagged addresses passed to these APIs, which would
end up causing the test to fail.  To make this test compatible with such
system allocators, stop using the system allocator to allocate memory in
anon_allocate_area, and instead just use mmap.

Link: https://lkml.kernel.org/r/20210714195437.118982-3-pcc@google.com
Link: https://linux-review.googlesource.com/id/Icac91064fcd923f77a83e8e133f8631c5b8fc241
Fixes: c47174fc36 ("userfaultfd: selftest")
Co-developed-by: Lokesh Gidra <lokeshgidra@google.com>
Signed-off-by: Lokesh Gidra <lokeshgidra@google.com>
Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Alistair Delva <adelva@google.com>
Cc: William McVicker <willmcvicker@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mitch Phillips <mitchp@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: <stable@vger.kernel.org>	[5.4]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-23 17:43:28 -07:00
Linus Torvalds
4784dc99c7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller:

 1) Fix type of bind option flag in af_xdp, from Baruch Siach.

 2) Fix use after free in bpf_xdp_link_release(), from Xuan Zhao.

 3) PM refcnt imbakance in r8152, from Takashi Iwai.

 4) Sign extension ug in liquidio, from Colin Ian King.

 5) Mising range check in s390 bpf jit, from Colin Ian King.

 6) Uninit value in caif_seqpkt_sendmsg(), from Ziyong Xuan.

 7) Fix skb page recycling race, from Ilias Apalodimas.

 8) Fix memory leak in tcindex_partial_destroy_work, from Pave Skripkin.

 9) netrom timer sk refcnt issues, from Nguyen Dinh Phi.

10) Fix data races aroun tcp's tfo_active_disable_stamp, from Eric
    Dumazet.

11) act_skbmod should only operate on ethernet packets, from Peilin Ye.

12) Fix slab out-of-bpunds in fib6_nh_flush_exceptions(),, from Psolo
    Abeni.

13) Fix sparx5 dependencies, from Yajun Deng.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (74 commits)
  dpaa2-switch: seed the buffer pool after allocating the swp
  net: sched: cls_api: Fix the the wrong parameter
  net: sparx5: fix unmet dependencies warning
  net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum
  net: dsa: ensure linearized SKBs in case of tail taggers
  ravb: Remove extra TAB
  ravb: Fix a typo in comment
  net: dsa: sja1105: make VID 4095 a bridge VLAN too
  tcp: disable TFO blackhole logic by default
  sctp: do not update transport pathmtu if SPP_PMTUD_ENABLE is not set
  net: ixp46x: fix ptp build failure
  ibmvnic: Remove the proper scrq flush
  selftests: net: add ESP-in-UDP PMTU test
  udp: check encap socket in __udp_lib_err
  sctp: update active_key for asoc when old key is being replaced
  r8169: Avoid duplicate sysfs entry creation error
  ixgbe: Fix packet corruption due to missing DMA sync
  Revert "qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()"
  ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
  fsl/fman: Add fibre support
  ...
2021-07-22 10:11:27 -07:00
Vadim Fedorenko
ece1278a9b selftests: net: add ESP-in-UDP PMTU test
The case of ESP in UDP encapsulation was not covered before. Add
cases of local changes of MTU and difference on routed path.

Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-21 08:50:35 -07:00
Paolo Bonzini
7025098af3 KVM/arm64 fixes for 5.14, take #1
- Fix MTE shared page detection
 
 - Fix selftest use of obsolete pthread_yield() in favour of sched_yield()
 
 - Enable selftest's use of PMU registers when asked to
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Merge tag 'kvmarm-fixes-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 5.14, take #1

- Fix MTE shared page detection

- Fix selftest use of obsolete pthread_yield() in favour of sched_yield()

- Enable selftest's use of PMU registers when asked to
2021-07-19 10:05:40 -04:00
Linus Torvalds
00397e74e3 linux-kselftest-fixes-5.14-rc2
This Kselftest fixes update for Linux 5.14-rc2 consists of fix
 to memory-hotplug hot-remove test to stop spamming logs with
 dump_page() entries and slowing the system down to a crawl.
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Merge tag 'linux-kselftest-fixes-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest fix from Shuah Khan:
 "A fix to memory-hotplug hot-remove test to stop spamming logs with
  dump_page() entries and slowing the system down to a crawl"

* tag 'linux-kselftest-fixes-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests: memory-hotplug: avoid spamming logs with dump_page(), ratio limit hot-remove error test
2021-07-17 12:44:32 -07:00
Daniel Borkmann
a6c39de76d bpf, selftests: Add test cases for pointer alu from multiple paths
Add several test cases for checking update_alu_sanitation_state() under
multiple paths:

  # ./test_verifier
  [...]
  #1061/u map access: known scalar += value_ptr unknown vs const OK
  #1061/p map access: known scalar += value_ptr unknown vs const OK
  #1062/u map access: known scalar += value_ptr const vs unknown OK
  #1062/p map access: known scalar += value_ptr const vs unknown OK
  #1063/u map access: known scalar += value_ptr const vs const (ne) OK
  #1063/p map access: known scalar += value_ptr const vs const (ne) OK
  #1064/u map access: known scalar += value_ptr const vs const (eq) OK
  #1064/p map access: known scalar += value_ptr const vs const (eq) OK
  #1065/u map access: known scalar += value_ptr unknown vs unknown (eq) OK
  #1065/p map access: known scalar += value_ptr unknown vs unknown (eq) OK
  #1066/u map access: known scalar += value_ptr unknown vs unknown (lt) OK
  #1066/p map access: known scalar += value_ptr unknown vs unknown (lt) OK
  #1067/u map access: known scalar += value_ptr unknown vs unknown (gt) OK
  #1067/p map access: known scalar += value_ptr unknown vs unknown (gt) OK
  [...]
  Summary: 1762 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
2021-07-16 16:57:07 +02:00
Linus Torvalds
405386b021 * Allow again loading KVM on 32-bit non-PAE builds
* Fixes for host SMIs on AMD
 
 * Fixes for guest SMIs on AMD
 
 * Fixes for selftests on s390 and ARM
 
 * Fix memory leak
 
 * Enforce no-instrumentation area on vmentry when hardware
   breakpoints are in use.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:

 - Allow again loading KVM on 32-bit non-PAE builds

 - Fixes for host SMIs on AMD

 - Fixes for guest SMIs on AMD

 - Fixes for selftests on s390 and ARM

 - Fix memory leak

 - Enforce no-instrumentation area on vmentry when hardware breakpoints
   are in use.

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (25 commits)
  KVM: selftests: smm_test: Test SMM enter from L2
  KVM: nSVM: Restore nested control upon leaving SMM
  KVM: nSVM: Fix L1 state corruption upon return from SMM
  KVM: nSVM: Introduce svm_copy_vmrun_state()
  KVM: nSVM: Check that VM_HSAVE_PA MSR was set before VMRUN
  KVM: nSVM: Check the value written to MSR_VM_HSAVE_PA
  KVM: SVM: Fix sev_pin_memory() error checks in SEV migration utilities
  KVM: SVM: Return -EFAULT if copy_to_user() for SEV mig packet header fails
  KVM: SVM: add module param to control the #SMI interception
  KVM: SVM: remove INIT intercept handler
  KVM: SVM: #SMI interception must not skip the instruction
  KVM: VMX: Remove vmx_msr_index from vmx.h
  KVM: X86: Disable hardware breakpoints unconditionally before kvm_x86->run()
  KVM: selftests: Address extra memslot parameters in vm_vaddr_alloc
  kvm: debugfs: fix memory leak in kvm_create_vm_debugfs
  KVM: x86/pmu: Clear anythread deprecated bit when 0xa leaf is unsupported on the SVM
  KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio
  KVM: SVM: Revert clearing of C-bit on GPA in #NPF handler
  KVM: x86/mmu: Do not apply HPA (memory encryption) mask to GPAs
  KVM: x86: Use kernel's x86_phys_bits to handle reduced MAXPHYADDR
  ...
2021-07-15 11:56:07 -07:00
Vitaly Kuznetsov
d951b2210c KVM: selftests: smm_test: Test SMM enter from L2
Two additional tests are added:
- SMM triggered from L2 does not currupt L1 host state.
- Save/restore during SMM triggered from L2 does not corrupt guest/host
  state.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210628104425.391276-7-vkuznets@redhat.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-15 10:19:44 -04:00
Ricardo Koller
6f2f86ec28 KVM: selftests: Address extra memslot parameters in vm_vaddr_alloc
Commit a75a895e64 ("KVM: selftests: Unconditionally use memslot 0 for
vaddr allocations") removed the memslot parameters from vm_vaddr_alloc.
It addressed all callers except one under lib/aarch64/, due to a race
with commit e3db7579ef ("KVM: selftests: Add exception handling
support for aarch64")

Fix the vm_vaddr_alloc call in lib/aarch64/processor.c.

Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Ricardo Koller <ricarkol@google.com>
Message-Id: <20210702201042.4036162-1-ricarkol@google.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-15 10:19:41 -04:00
Linus Torvalds
8096acd744 Networking fixes for 5.14-rc2, including fixes from bpf and netfilter.
Current release - regressions:
 
  - sock: fix parameter order in sock_setsockopt()
 
 Current release - new code bugs:
 
  - netfilter: nft_last:
      - fix incorrect arithmetic when restoring last used
      - honor NFTA_LAST_SET on restoration
 
 Previous releases - regressions:
 
  - udp: properly flush normal packet at GRO time
 
  - sfc: ensure correct number of XDP queues; don't allow enabling the
         feature if there isn't sufficient resources to Tx from any CPU
 
  - dsa: sja1105: fix address learning getting disabled on the CPU port
 
  - mptcp: addresses a rmem accounting issue that could keep packets
         in subflow receive buffers longer than necessary, delaying
 	MPTCP-level ACKs
 
  - ip_tunnel: fix mtu calculation for ETHER tunnel devices
 
  - do not reuse skbs allocated from skbuff_fclone_cache in the napi
    skb cache, we'd try to return them to the wrong slab cache
 
  - tcp: consistently disable header prediction for mptcp
 
 Previous releases - always broken:
 
  - bpf: fix subprog poke descriptor tracking use-after-free
 
  - ipv6:
       - allocate enough headroom in ip6_finish_output2() in case
         iptables TEE is used
       - tcp: drop silly ICMPv6 packet too big messages to avoid
         expensive and pointless lookups (which may serve as a DDOS
 	vector)
       - make sure fwmark is copied in SYNACK packets
       - fix 'disable_policy' for forwarded packets (align with IPv4)
 
  - netfilter: conntrack: do not renew entry stuck in tcp SYN_SENT state
 
  - netfilter: conntrack: do not mark RST in the reply direction coming
       after SYN packet for an out-of-sync entry
 
  - mptcp: cleanly handle error conditions with MP_JOIN and syncookies
 
  - mptcp: fix double free when rejecting a join due to port mismatch
 
  - validate lwtstate->data before returning from skb_tunnel_info()
 
  - tcp: call sk_wmem_schedule before sk_mem_charge in zerocopy path
 
  - mt76: mt7921: continue to probe driver when fw already downloaded
 
  - bonding: fix multiple issues with offloading IPsec to (thru?) bond
 
  - stmmac: ptp: fix issues around Qbv support and setting time back
 
  - bcmgenet: always clear wake-up based on energy detection
 
 Misc:
 
  - sctp: move 198 addresses from unusable to private scope
 
  - ptp: support virtual clocks and timestamping
 
  - openvswitch: optimize operation for key comparison
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Merge tag 'net-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski.
 "Including fixes from bpf and netfilter.

  Current release - regressions:

   - sock: fix parameter order in sock_setsockopt()

  Current release - new code bugs:

   - netfilter: nft_last:
       - fix incorrect arithmetic when restoring last used
       - honor NFTA_LAST_SET on restoration

  Previous releases - regressions:

   - udp: properly flush normal packet at GRO time

   - sfc: ensure correct number of XDP queues; don't allow enabling the
     feature if there isn't sufficient resources to Tx from any CPU

   - dsa: sja1105: fix address learning getting disabled on the CPU port

   - mptcp: addresses a rmem accounting issue that could keep packets in
     subflow receive buffers longer than necessary, delaying MPTCP-level
     ACKs

   - ip_tunnel: fix mtu calculation for ETHER tunnel devices

   - do not reuse skbs allocated from skbuff_fclone_cache in the napi
     skb cache, we'd try to return them to the wrong slab cache

   - tcp: consistently disable header prediction for mptcp

  Previous releases - always broken:

   - bpf: fix subprog poke descriptor tracking use-after-free

   - ipv6:
       - allocate enough headroom in ip6_finish_output2() in case
         iptables TEE is used
       - tcp: drop silly ICMPv6 packet too big messages to avoid
         expensive and pointless lookups (which may serve as a DDOS
         vector)
       - make sure fwmark is copied in SYNACK packets
       - fix 'disable_policy' for forwarded packets (align with IPv4)

   - netfilter: conntrack:
       - do not renew entry stuck in tcp SYN_SENT state
       - do not mark RST in the reply direction coming after SYN packet
         for an out-of-sync entry

   - mptcp: cleanly handle error conditions with MP_JOIN and syncookies

   - mptcp: fix double free when rejecting a join due to port mismatch

   - validate lwtstate->data before returning from skb_tunnel_info()

   - tcp: call sk_wmem_schedule before sk_mem_charge in zerocopy path

   - mt76: mt7921: continue to probe driver when fw already downloaded

   - bonding: fix multiple issues with offloading IPsec to (thru?) bond

   - stmmac: ptp: fix issues around Qbv support and setting time back

   - bcmgenet: always clear wake-up based on energy detection

  Misc:

   - sctp: move 198 addresses from unusable to private scope

   - ptp: support virtual clocks and timestamping

   - openvswitch: optimize operation for key comparison"

* tag 'net-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (158 commits)
  net: dsa: properly check for the bridge_leave methods in dsa_switch_bridge_leave()
  sfc: add logs explaining XDP_TX/REDIRECT is not available
  sfc: ensure correct number of XDP queues
  sfc: fix lack of XDP TX queues - error XDP TX failed (-22)
  net: fddi: fix UAF in fza_probe
  net: dsa: sja1105: fix address learning getting disabled on the CPU port
  net: ocelot: fix switchdev objects synced for wrong netdev with LAG offload
  net: Use nlmsg_unicast() instead of netlink_unicast()
  octeontx2-pf: Fix uninitialized boolean variable pps
  ipv6: allocate enough headroom in ip6_finish_output2()
  net: hdlc: rename 'mod_init' & 'mod_exit' functions to be module-specific
  net: bridge: multicast: fix MRD advertisement router port marking race
  net: bridge: multicast: fix PIM hello router port marking race
  net: phy: marvell10g: fix differentiation of 88X3310 from 88X3340
  dsa: fix for_each_child.cocci warnings
  virtio_net: check virtqueue_add_sgs() return value
  mptcp: properly account bulk freed memory
  selftests: mptcp: fix case multiple subflows limited by server
  mptcp: avoid processing packet if a subflow reset
  mptcp: fix syncookie process if mptcp can not_accept new subflow
  ...
2021-07-14 09:24:32 -07:00
Marc Zyngier
f8f0edabcc KVM: selftests: x86: Address missing vm_install_exception_handler conversions
Commit b78f4a5966 ("KVM: selftests: Rename vm_handle_exception")
raced with a couple of new x86 tests, missing two vm_handle_exception
to vm_install_exception_handler conversions.

Help the two broken tests to catch up with the new world.

Cc: Andrew Jones <drjones@redhat.com>
CC: Ricardo Koller <ricarkol@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Message-Id: <20210701071928.2971053-1-maz@kernel.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-07-14 12:15:05 -04:00
Paolo Bonzini
f3cf800778 Merge tag 'kvm-s390-master-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: selftests: Fixes

- provide memory model for  IBM z196 and zEC12
- do not require 64GB of memory
2021-07-14 12:14:27 -04:00
Andrew Jones
5cf17746b3 KVM: arm64: selftests: get-reg-list: actually enable pmu regs in pmu sublist
We reworked get-reg-list to make it easier to enable optional register
sublists by parametrizing their vcpu feature flags as well as making
other generalizations. That was all to make sure we enable the PMU
registers when we want to test them. Somehow we forgot to actually
include the PMU feature flag in the PMU sublist description though!
Do that now.

Fixes: 313673bad8 ("KVM: arm64: selftests: get-reg-list: Split base and pmu registers")
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210713203742.29680-3-drjones@redhat.com
2021-07-14 11:55:18 +01:00
Andrew Jones
bac0b13590 KVM: selftests: change pthread_yield to sched_yield
With later GCC we get

 steal_time.c: In function ‘main’:
 steal_time.c:323:25: warning: ‘pthread_yield’ is deprecated: pthread_yield is deprecated, use sched_yield instead [-Wdeprecated-declarations]

Let's follow the instructions and use sched_yield instead.

Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210713203742.29680-2-drjones@redhat.com
2021-07-14 11:55:18 +01:00
Paolo Pisati
0c0f6299ba selftests: memory-hotplug: avoid spamming logs with dump_page(), ratio limit hot-remove error test
While the offline memory test obey ratio limit, the same test with
error injection does not and tries to offline all the hotpluggable
memory, spamming system logs with hundreds of thousands of dump_page()
entries, slowing system down (to the point the test itself timesout and
gets terminated) and excessive fs occupation:

...
[ 9784.393354] page:c00c0000007d1b40 refcount:3 mapcount:0 mapping:c0000001fc03e950 index:0xe7b
[ 9784.393355] def_blk_aops
[ 9784.393356] flags: 0x3ffff800002062(referenced|active|workingset|private)
[ 9784.393358] raw: 003ffff800002062 c0000001b9343a68 c0000001b9343a68 c0000001fc03e950
[ 9784.393359] raw: 0000000000000e7b c000000006607b18 00000003ffffffff c00000000490d000
[ 9784.393359] page dumped because: migration failure
[ 9784.393360] page->mem_cgroup:c00000000490d000
[ 9784.393416] migrating pfn 1f46d failed ret:1
...

$ grep "page dumped because: migration failure" /var/log/kern.log | wc -l
2405558

$ ls -la /var/log/kern.log
-rw-r----- 1 syslog adm 2256109539 Jun 30 14:19 /var/log/kern.log

Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2021-07-12 14:20:01 -06:00
Jianguo Wu
a7da441621 selftests: mptcp: fix case multiple subflows limited by server
After patch "mptcp: fix syncookie process if mptcp can not_accept new
subflow", if subflow is limited, MP_JOIN SYN is dropped, and no SYN/ACK
will be replied.

So in case "multiple subflows limited by server", the expected SYN/ACK
number should be 1.

Fixes: 00587187ad ("selftests: mptcp: add test cases for mptcp join tests with syn cookies")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Jianguo Wu <wujianguo@chinatelecom.cn>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-09 18:38:53 -07:00
David S. Miller
5d52c906f0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
pull-request: bpf 2021-07-09

The following pull-request contains BPF updates for your *net* tree.

We've added 9 non-merge commits during the last 9 day(s) which contain
a total of 13 files changed, 118 insertions(+), 62 deletions(-).

The main changes are:

1) Fix runqslower task->state access from BPF, from SanjayKumar Jeyakumar.

2) Fix subprog poke descriptor tracking use-after-free, from John Fastabend.

3) Fix sparse complaint from prior devmap RCU conversion, from Toke Høiland-Jørgensen.

4) Fix missing va_end in bpftool JIT json dump's error path, from Gu Shengxian.

5) Fix tools/bpf install target from missing runqslower install, from Wei Li.

6) Fix xdpsock BPF sample to unload program on shared umem option, from Wang Hai.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-09 15:22:45 -07:00
Linus Torvalds
5a7f7fc5dd Tracing fix for histograms and a clean up in ftrace
- Fixed a bug that broke the .sym-offset modifier and added a test to make
    sure nothing breaks it again.
 
  - Replace a list_del/list_add() with a list_move()
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Merge tag 'trace-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fix and cleanup from Steven Rostedt:
 "Tracing fix for histograms and a clean up in ftrace:

   - Fixed a bug that broke the .sym-offset modifier and added a test to
     make sure nothing breaks it again.

   - Replace a list_del/list_add() with a list_move()"

* tag 'trace-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Use list_move instead of list_del/list_add
  tracing/selftests: Add tests to test histogram sym and sym-offset modifiers
  tracing/histograms: Fix parsing of "sym-offset" modifier
2021-07-09 11:15:09 -07:00
John Fastabend
1fb5ba29ad bpf: Selftest to verify mixing bpf2bpf calls and tailcalls with insn patch
This adds some extra noise to the tailcall_bpf2bpf4 tests that will cause
verify to patch insns. This then moves around subprog start/end insn
index and poke descriptor insn index to ensure that verify and JIT will
continue to track these correctly.

If done correctly verifier should pass this program same as before and
JIT should emit tail call logic.

Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210707223848.14580-3-john.fastabend@gmail.com
2021-07-09 12:08:40 +02:00
Aneesh Kumar K.V
a9cc9c3456 selftest/mremap_test: avoid crash with static build
With a large mmap map size, we can overlap with the text area and using
MAP_FIXED results in unmapping that area.  Switch to MAP_FIXED_NOREPLACE
and handle the EEXIST error.

Link: https://lkml.kernel.org/r/20210616045239.370802-3-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Kalesh Singh <kaleshsingh@google.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Aneesh Kumar K.V
f27a5c93cd selftest/mremap_test: update the test to handle pagesize other than 4K
Patch series "mrermap fixes", v2.

This patch (of 6):

Instead of hardcoding 4K page size fetch it using sysconf().  For the
performance measurements test still assume 2M and 1G are hugepage sizes.

Link: https://lkml.kernel.org/r/20210616045239.370802-1-aneesh.kumar@linux.ibm.com
Link: https://lkml.kernel.org/r/20210616045239.370802-2-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Kalesh Singh <kaleshsingh@google.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:22 -07:00
Mike Rapoport
76fe17ef58 secretmem: test: add basic selftest for memfd_secret(2)
The test verifies that file descriptor created with memfd_secret does not
allow read/write operations, that secret memory mappings respect
RLIMIT_MEMLOCK and that remote accesses with process_vm_read() and
ptrace() to the secret memory fail.

Link: https://lkml.kernel.org/r/20210518072034.31572-8-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christopher Lameter <cl@linux.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Elena Reshetova <elena.reshetova@intel.com>
Cc: Hagen Paul Pfeifer <hagen@jauu.net>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tycho Andersen <tycho@tycho.ws>
Cc: Will Deacon <will@kernel.org>
Cc: kernel test robot <lkp@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-08 11:48:21 -07:00
Steven Rostedt (VMware)
fa73514d5e tracing/selftests: Add tests to test histogram sym and sym-offset modifiers
Add a test to the tracing selftests that will catch if the .sym or
.sym-offset modifiers break in the future.

Link: https://lkml.kernel.org/r/20210707121451.101a1002@oasis.local.home

Acked-by: Tom Zanussi <zanussi@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-07-08 13:01:51 -04:00
David S. Miller
d7fba8ff3e Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

1) Do not refresh timeout in SYN_SENT for syn retransmissions.
   Add selftest for unreplied TCP connection, from Florian Westphal.

2) Fix null dereference from error path with hardware offload
   in nftables.

3) Remove useless nf_ct_gre_keymap_flush() from netns exit path,
   from Vasily Averin.

4) Missing rcu read-lock side in ctnetlink helper info dump,
   also from Vasily.

5) Do not mark RST in the reply direction coming after SYN packet
   for an out-of-sync entry, from Ali Abdallah and Florian Westphal.

6) Add tcp_ignore_invalid_rst sysctl to allow to disable out of
   segment RSTs, from Ali.

7) KCSAN fix for nf_conntrack_all_lock(), from Manfred Spraul.

8) Honor NFTA_LAST_SET in nft_last.

9) Fix incorrect arithmetics when restore last_jiffies in nft_last.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-07 14:00:14 -07:00
Hangbin Liu
0e02bf5de4 selftests: icmp_redirect: IPv6 PMTU info should be cleared after redirect
After redirecting, it's already a new path. So the old PMTU info should
be cleared. The IPv6 test "mtu exception plus redirect" should only
has redirect info without old PMTU.

The IPv4 test can not be changed because of legacy.

Fixes: ec81053528 ("selftests: Add redirect tests")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-07 13:45:30 -07:00
Hangbin Liu
24b671aad4 selftests: icmp_redirect: remove from checking for IPv6 route get
If the kernel doesn't enable option CONFIG_IPV6_SUBTREES, the RTA_SRC
info will not be exported to userspace in rt6_fill_node(). And ip cmd will
not print "from ::" to the route output. So remove this check.

Fixes: ec81053528 ("selftests: Add redirect tests")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-07 13:45:30 -07:00
Linus Torvalds
1423e2660c Fixes and improvements for FPU handling on x86:
- Prevent sigaltstack out of bounds writes. The kernel unconditionally
     writes the FPU state to the alternate stack without checking whether
     the stack is large enough to accomodate it.
 
     Check the alternate stack size before doing so and in case it's too
     small force a SIGSEGV instead of silently corrupting user space data.
 
   - MINSIGSTKZ and SIGSTKSZ are constants in signal.h and have never been
     updated despite the fact that the FPU state which is stored on the
     signal stack has grown over time which causes trouble in the field
     when AVX512 is available on a CPU. The kernel does not expose the
     minimum requirements for the alternate stack size depending on the
     available and enabled CPU features.
 
     ARM already added an aux vector AT_MINSIGSTKSZ for the same reason.
     Add it to x86 as well
 
   - A major cleanup of the x86 FPU code. The recent discoveries of XSTATE
     related issues unearthed quite some inconsistencies, duplicated code
     and other issues.
 
     The fine granular overhaul addresses this, makes the code more robust
     and maintainable, which allows to integrate upcoming XSTATE related
     features in sane ways.
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Merge tag 'x86-fpu-2021-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fpu updates from Thomas Gleixner:
 "Fixes and improvements for FPU handling on x86:

   - Prevent sigaltstack out of bounds writes.

     The kernel unconditionally writes the FPU state to the alternate
     stack without checking whether the stack is large enough to
     accomodate it.

     Check the alternate stack size before doing so and in case it's too
     small force a SIGSEGV instead of silently corrupting user space
     data.

   - MINSIGSTKZ and SIGSTKSZ are constants in signal.h and have never
     been updated despite the fact that the FPU state which is stored on
     the signal stack has grown over time which causes trouble in the
     field when AVX512 is available on a CPU. The kernel does not expose
     the minimum requirements for the alternate stack size depending on
     the available and enabled CPU features.

     ARM already added an aux vector AT_MINSIGSTKSZ for the same reason.
     Add it to x86 as well.

   - A major cleanup of the x86 FPU code. The recent discoveries of
     XSTATE related issues unearthed quite some inconsistencies,
     duplicated code and other issues.

     The fine granular overhaul addresses this, makes the code more
     robust and maintainable, which allows to integrate upcoming XSTATE
     related features in sane ways"

* tag 'x86-fpu-2021-07-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (74 commits)
  x86/fpu/xstate: Clear xstate header in copy_xstate_to_uabi_buf() again
  x86/fpu/signal: Let xrstor handle the features to init
  x86/fpu/signal: Handle #PF in the direct restore path
  x86/fpu: Return proper error codes from user access functions
  x86/fpu/signal: Split out the direct restore code
  x86/fpu/signal: Sanitize copy_user_to_fpregs_zeroing()
  x86/fpu/signal: Sanitize the xstate check on sigframe
  x86/fpu/signal: Remove the legacy alignment check
  x86/fpu/signal: Move initial checks into fpu__restore_sig()
  x86/fpu: Mark init_fpstate __ro_after_init
  x86/pkru: Remove xstate fiddling from write_pkru()
  x86/fpu: Don't store PKRU in xstate in fpu_reset_fpstate()
  x86/fpu: Remove PKRU handling from switch_fpu_finish()
  x86/fpu: Mask PKRU from kernel XRSTOR[S] operations
  x86/fpu: Hook up PKRU into ptrace()
  x86/fpu: Add PKRU storage outside of task XSAVE buffer
  x86/fpu: Dont restore PKRU in fpregs_restore_userspace()
  x86/fpu: Rename xfeatures_mask_user() to xfeatures_mask_uabi()
  x86/fpu: Move FXSAVE_LEAK quirk info __copy_kernel_to_fpregs()
  x86/fpu: Rename __fpregs_load_activate() to fpregs_restore_userregs()
  ...
2021-07-07 11:12:01 -07:00
Christian Borntraeger
cd4220d23b KVM: selftests: do not require 64GB in set_memory_region_test
Unless the user sets overcommit_memory or has plenty of swap, the latest
changes to the testcase will result in ENOMEM failures for hosts with
less than 64GB RAM. As we do not use much of the allocated memory, we
can use MAP_NORESERVE to avoid this error.

Cc: Zenghui Yu <yuzenghui@huawei.com>
Cc: vkuznets@redhat.com
Cc: wanghaibin.wang@huawei.com
Cc: stable@vger.kernel.org
Fixes: 309505dd56 ("KVM: selftests: Fix mapping length truncation in m{,un}map()")
Tested-by: Zenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/kvm/20210701160425.33666-1-borntraeger@de.ibm.com/
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2021-07-06 10:06:20 +02:00
Christian Borntraeger
fb5dad4084 KVM: selftests: introduce P44V64 for z196 and EC12
Older machines like z196 and zEC12 do only support 44 bits of physical
addresses. Make this the default and check via IBC if we are on a later
machine. We then add P47V64 as an additional model.

Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Link: https://lore.kernel.org/kvm/20210701153853.33063-1-borntraeger@de.ibm.com/
Fixes: 1bc603af73 ("KVM: selftests: introduce P47V64 for s390x")
2021-07-06 10:05:16 +02:00
Linus Torvalds
eed0218e8c Char / Misc driver updates for 5.14-rc1
Here is the big set of char / misc and other driver subsystem updates
 for 5.14-rc1.  Included in here are:
 	- habanna driver updates
 	- fsl-mc driver updates
 	- comedi driver updates
 	- fpga driver updates
 	- extcon driver updates
 	- interconnect driver updates
 	- mei driver updates
 	- nvmem driver updates
 	- phy driver updates
 	- pnp driver updates
 	- soundwire driver updates
 	- lots of other tiny driver updates for char and misc drivers
 
 This is looking more and more like the "various driver subsystems mushed
 together" tree...
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
 "Here is the big set of char / misc and other driver subsystem updates
  for 5.14-rc1. Included in here are:

   - habanalabs driver updates

   - fsl-mc driver updates

   - comedi driver updates

   - fpga driver updates

   - extcon driver updates

   - interconnect driver updates

   - mei driver updates

   - nvmem driver updates

   - phy driver updates

   - pnp driver updates

   - soundwire driver updates

   - lots of other tiny driver updates for char and misc drivers

  This is looking more and more like the "various driver subsystems
  mushed together" tree...

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
  mcb: Use DEFINE_RES_MEM() helper macro and fix the end address
  PNP: moved EXPORT_SYMBOL so that it immediately followed its function/variable
  bus: mhi: pci-generic: Add missing 'pci_disable_pcie_error_reporting()' calls
  bus: mhi: Wait for M2 state during system resume
  bus: mhi: core: Fix power down latency
  intel_th: Wait until port is in reset before programming it
  intel_th: msu: Make contiguous buffers uncached
  intel_th: Remove an unused exit point from intel_th_remove()
  stm class: Spelling fix
  nitro_enclaves: Set Bus Master for the NE PCI device
  misc: ibmasm: Modify matricies to matrices
  misc: vmw_vmci: return the correct errno code
  siox: Simplify error handling via dev_err_probe()
  fpga: machxo2-spi: Address warning about unused variable
  lkdtm/heap: Add init_on_alloc tests
  selftests/lkdtm: Enable various testable CONFIGs
  lkdtm: Add CONFIG hints in errors where possible
  lkdtm: Enable DOUBLE_FAULT on all architectures
  lkdtm/heap: Add vmalloc linear overflow test
  lkdtm/bugs: XFAIL UNALIGNED_LOAD_STORE_WRITE
  ...
2021-07-05 13:42:16 -07:00
Linus Torvalds
28e92f9903 Merge branch 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:

 - Bitmap parsing support for "all" as an alias for all bits

 - Documentation updates

 - Miscellaneous fixes, including some that overlap into mm and lockdep

 - kvfree_rcu() updates

 - mem_dump_obj() updates, with acks from one of the slab-allocator
   maintainers

 - RCU NOCB CPU updates, including limited deoffloading

 - SRCU updates

 - Tasks-RCU updates

 - Torture-test updates

* 'core-rcu-2021.07.04' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (78 commits)
  tasks-rcu: Make show_rcu_tasks_gp_kthreads() be static inline
  rcu-tasks: Make ksoftirqd provide RCU Tasks quiescent states
  rcu: Add missing __releases() annotation
  rcu: Remove obsolete rcu_read_unlock() deadlock commentary
  rcu: Improve comments describing RCU read-side critical sections
  rcu: Create an unrcu_pointer() to remove __rcu from a pointer
  srcu: Early test SRCU polling start
  rcu: Fix various typos in comments
  rcu/nocb: Unify timers
  rcu/nocb: Prepare for fine-grained deferred wakeup
  rcu/nocb: Only cancel nocb timer if not polling
  rcu/nocb: Delete bypass_timer upon nocb_gp wakeup
  rcu/nocb: Cancel nocb_timer upon nocb_gp wakeup
  rcu/nocb: Allow de-offloading rdp leader
  rcu/nocb: Directly call __wake_nocb_gp() from bypass timer
  rcu: Don't penalize priority boosting when there is nothing to boost
  rcu: Point to documentation of ordering guarantees
  rcu: Make rcu_gp_cleanup() be noinline for tracing
  rcu: Restrict RCU_STRICT_GRACE_PERIOD to at most four CPUs
  rcu: Make show_rcu_gp_kthreads() dump rcu_node structures blocking GP
  ...
2021-07-04 12:58:33 -07:00
Linus Torvalds
35e43538af linux-kselftest-next-5.14-rc1
This Kselftest update for Linux 5.14-rc1 consists of fixes to
 existing tests and framework:
 
 -- migrate sgx test to kselftest harness
 -- add new test cases to sgx test
 -- ftrace test fix event-no-pid on 1-core machine
 -- splice test adjust for handler fallback removal
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Merge tag 'linux-kselftest-next-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest update from Shuah Khan:
 "Fixes to existing tests and framework:

   - migrate sgx test to kselftest harness

   - add new test cases to sgx test

   - ftrace test fix event-no-pid on 1-core machine

   - splice test adjust for handler fallback removal"

* tag 'linux-kselftest-next-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/sgx: remove checks for file execute permissions
  selftests/ftrace: fix event-no-pid on 1-core machine
  selftests/sgx: Refine the test enclave to have storage
  selftests/sgx: Add EXPECT_EEXIT() macro
  selftests/sgx: Dump enclave memory map
  selftests/sgx: Migrate to kselftest harness
  selftests/sgx: Rename 'eenter' and 'sgx_call_vdso'
  selftests: timers: rtcpie: skip test if default RTC device does not exist
  selftests: lib.mk: Also install "config" and "settings"
  selftests: splice: Adjust for handler fallback removal
  selftests/tls: Add {} to avoid static checker warning
  selftests/resctrl: Fix incorrect parsing of option "-t"
2021-07-02 13:09:15 -07:00
Linus Torvalds
019b3fd94b powerpc updates for 5.14
- A big series refactoring parts of our KVM code, and converting some to C.
 
  - Support for ARCH_HAS_SET_MEMORY, and ARCH_HAS_STRICT_MODULE_RWX on some CPUs.
 
  - Support for the Microwatt soft-core.
 
  - Optimisations to our interrupt return path on 64-bit.
 
  - Support for userspace access to the NX GZIP accelerator on PowerVM on Power10.
 
  - Enable KUAP and KUEP by default on 32-bit Book3S CPUs.
 
  - Other smaller features, fixes & cleanups.
 
 Thanks to: Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann, Athira Rajeev, Baokun Li,
 Benjamin Herrenschmidt, Bharata B Rao, Christophe Leroy, Daniel Axtens, Daniel Henrique
 Barboza, Finn Thain, Geoff Levand, Haren Myneni, Jason Wang, Jiapeng Chong, Joel Stanley,
 Jordan Niethe, Kajol Jain, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas
 Piggin, Nick Desaulniers, Paul Mackerras, Russell Currey, Sathvika Vasireddy, Shaokun
 Zhang, Stephen Rothwell, Sudeep Holla, Suraj Jitindar Singh, Tom Rix, Vaibhav Jain,
 YueHaibing, Zhang Jianhua, Zhen Lei.
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Merge tag 'powerpc-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - A big series refactoring parts of our KVM code, and converting some
   to C.

 - Support for ARCH_HAS_SET_MEMORY, and ARCH_HAS_STRICT_MODULE_RWX on
   some CPUs.

 - Support for the Microwatt soft-core.

 - Optimisations to our interrupt return path on 64-bit.

 - Support for userspace access to the NX GZIP accelerator on PowerVM on
   Power10.

 - Enable KUAP and KUEP by default on 32-bit Book3S CPUs.

 - Other smaller features, fixes & cleanups.

Thanks to: Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann, Athira
Rajeev, Baokun Li, Benjamin Herrenschmidt, Bharata B Rao, Christophe
Leroy, Daniel Axtens, Daniel Henrique Barboza, Finn Thain, Geoff Levand,
Haren Myneni, Jason Wang, Jiapeng Chong, Joel Stanley, Jordan Niethe,
Kajol Jain, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas
Piggin, Nick Desaulniers, Paul Mackerras, Russell Currey, Sathvika
Vasireddy, Shaokun Zhang, Stephen Rothwell, Sudeep Holla, Suraj Jitindar
Singh, Tom Rix, Vaibhav Jain, YueHaibing, Zhang Jianhua, and Zhen Lei.

* tag 'powerpc-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (218 commits)
  powerpc: Only build restart_table.c for 64s
  powerpc/64s: move ret_from_fork etc above __end_soft_masked
  powerpc/64s/interrupt: clean up interrupt return labels
  powerpc/64/interrupt: add missing kprobe annotations on interrupt exit symbols
  powerpc/64: enable MSR[EE] in irq replay pt_regs
  powerpc/64s/interrupt: preserve regs->softe for NMI interrupts
  powerpc/64s: add a table of implicit soft-masked addresses
  powerpc/64e: remove implicit soft-masking and interrupt exit restart logic
  powerpc/64e: fix CONFIG_RELOCATABLE build warnings
  powerpc/64s: fix hash page fault interrupt handler
  powerpc/4xx: Fix setup_kuep() on SMP
  powerpc/32s: Fix setup_{kuap/kuep}() on SMP
  powerpc/interrupt: Use names in check_return_regs_valid()
  powerpc/interrupt: Also use exit_must_hard_disable() on PPC32
  powerpc/sysfs: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE
  powerpc/ptrace: Refactor regs_set_return_{msr/ip}
  powerpc/ptrace: Move set_return_regs_changed() before regs_set_return_{msr/ip}
  powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi()
  powerpc/pseries/vas: Include irqdomain.h
  powerpc: mark local variables around longjmp as volatile
  ...
2021-07-02 12:54:34 -07:00
Linus Torvalds
71bd934101 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "190 patches.

  Subsystems affected by this patch series: mm (hugetlb, userfaultfd,
  vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock,
  migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap,
  zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc,
  core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs,
  signals, exec, kcov, selftests, compress/decompress, and ipc"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits)
  ipc/util.c: use binary search for max_idx
  ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock
  ipc: use kmalloc for msg_queue and shmid_kernel
  ipc sem: use kvmalloc for sem_undo allocation
  lib/decompressors: remove set but not used variabled 'level'
  selftests/vm/pkeys: exercise x86 XSAVE init state
  selftests/vm/pkeys: refill shadow register after implicit kernel write
  selftests/vm/pkeys: handle negative sys_pkey_alloc() return code
  selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
  kcov: add __no_sanitize_coverage to fix noinstr for all architectures
  exec: remove checks in __register_bimfmt()
  x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned
  hfsplus: report create_date to kstat.btime
  hfsplus: remove unnecessary oom message
  nilfs2: remove redundant continue statement in a while-loop
  kprobes: remove duplicated strong free_insn_page in x86 and s390
  init: print out unknown kernel parameters
  checkpatch: do not complain about positive return values starting with EPOLL
  checkpatch: improve the indented label test
  checkpatch: scripts/spdxcheck.py now requires python3
  ...
2021-07-02 12:08:10 -07:00
Linus Torvalds
3dbdb38e28 Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:

 - cgroup.kill is added which implements atomic killing of the whole
   subtree.

   Down the line, this should be able to replace the multiple userland
   implementations of "keep killing till empty".

 - PSI can now be turned off at boot time to avoid overhead for
   configurations which don't care about PSI.

* 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: make per-cgroup pressure stall tracking configurable
  cgroup: Fix kernel-doc
  cgroup: inline cgroup_task_freeze()
  tests/cgroup: test cgroup.kill
  tests/cgroup: move cg_wait_for(), cg_prepare_for_wait()
  tests/cgroup: use cgroup.kill in cg_killall()
  docs/cgroup: add entry for cgroup.kill
  cgroup: introduce cgroup.kill
2021-07-01 17:22:14 -07:00
Florian Westphal
37d220b58d selftest: netfilter: add test case for unreplied tcp connections
TCP connections in UNREPLIED state (only SYN seen) can be kept alive
indefinitely, as each SYN re-sets the timeout.

This means that even if a peer has closed its socket the entry
never times out.

This also prevents re-evaluation of configured NAT rules.
Add a test case that sets SYN timeout to 10 seconds, then check
that the nat redirection added later eventually takes effect.

This is based off a repro script from Antonio Ojea.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-07-02 02:05:59 +02:00
Yangbo Lu
2214d70324 selftests/net: timestamping: support binding PHC
Support binding PHC of PTP vclock for timestamping.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-07-01 13:08:18 -07:00
Dave Hansen
d892454b68 selftests/vm/pkeys: exercise x86 XSAVE init state
On x86, there is a set of instructions used to save and restore register
state collectively known as the XSAVE architecture.  There are about a
dozen different features managed with XSAVE.  The protection keys
register, PKRU, is one of those features.

The hardware optimizes XSAVE by tracking when the state has not changed
from its initial (init) state.  In this case, it can avoid the cost of
writing state to memory (it would usually just be a bunch of 0's).

When the pkey register is 0x0 the hardware optionally choose to track the
register as being in the init state (optimize away the writes).  AMD CPUs
do this more aggressively compared to Intel.

On x86, PKRU is rarely in its (very permissive) init state.  Instead, the
value defaults to something very restrictive.  It is not surprising that
bugs have popped up in the rare cases when PKRU reaches its init state.

Add a protection key selftest which gets the protection keys register into
its init state in a way that should work on Intel and AMD.  Then, do a
bunch of pkey register reads to watch for inadvertent changes.

This adds "-mxsave" to CFLAGS for all the x86 vm selftests in order to
allow use of the XSAVE instruction __builtin functions.  This will make
the builtins available on all of the vm selftests, but is expected to be
harmless.

Link: https://lkml.kernel.org/r/20210611164202.1849B712@viggo.jf.intel.com
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-01 11:06:06 -07:00
Dave Hansen
6039ca2549 selftests/vm/pkeys: refill shadow register after implicit kernel write
The pkey test code keeps a "shadow" of the pkey register around.  This
ensures that any bugs which might write to the register can be caught more
quickly.

Generally, userspace has a good idea when the kernel is going to write to
the register.  For instance, alloc_pkey() is passed a permission mask.
The caller of alloc_pkey() can update the shadow based on the return value
and the mask.

But, the kernel can also modify the pkey register in a more sneaky way.
For mprotect(PROT_EXEC) mappings, the kernel will allocate a pkey and
write the pkey register to create an execute-only mapping.  The kernel
never tells userspace what key it uses for this.

This can cause the test to fail with messages like:

	protection_keys_64.2: pkey-helpers.h:132: _read_pkey_reg: Assertion `pkey_reg == shadow_pkey_reg' failed.

because the shadow was not updated with the new kernel-set value.

Forcibly update the shadow value immediately after an mprotect().

Link: https://lkml.kernel.org/r/20210611164200.EF76AB73@viggo.jf.intel.com
Fixes: 6af17cf89e ("x86/pkeys/selftests: Add PROT_EXEC test")
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-01 11:06:06 -07:00
Dave Hansen
bf68294a2e selftests/vm/pkeys: handle negative sys_pkey_alloc() return code
The alloc_pkey() sefltest function wraps the sys_pkey_alloc() system call.
On success, it updates its "shadow" register value because
sys_pkey_alloc() updates the real register.

But, the success check is wrong.  pkey_alloc() considers any non-zero
return code to indicate success where the pkey register will be modified.
This fails to take negative return codes into account.

Consider only a positive return value as a successful call.

Link: https://lkml.kernel.org/r/20210611164157.87AB4246@viggo.jf.intel.com
Fixes: 5f23f6d082 ("x86/pkeys: Add self-tests")
Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-01 11:06:06 -07:00
Dave Hansen
f36ef40762 selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
Patch series "selftests/vm/pkeys: Bug fixes and a new test".

There has been a lot of activity on the x86 front around the XSAVE
architecture which is used to context-switch processor state (among other
things).  In addition, AMD has recently joined the protection keys club by
adding processor support for PKU.

The AMD implementation helped uncover a kernel bug around the PKRU "init
state", which actually applied to Intel's implementation but was just
harder to hit.  This series adds a test which is expected to help find
this class of bug both on AMD and Intel.  All the work around pkeys on x86
also uncovered a few bugs in the selftest.

This patch (of 4):

The "random" pkey allocation code currently does the good old:

	srand((unsigned int)time(NULL));

*But*, it unfortunately does this on every random pkey allocation.

There may be thousands of these a second.  time() has a one second
resolution.  So, each time alloc_random_pkey() is called, the PRNG is
*RESET* to time().  This is nasty.  Normally, if you do:

	srand(<ANYTHING>);
	foo = rand();
	bar = rand();

You'll be quite guaranteed that 'foo' and 'bar' are different.  But, if
you do:

	srand(1);
	foo = rand();
	srand(1);
	bar = rand();

You are quite guaranteed that 'foo' and 'bar' are the *SAME*.  The recent
"fix" effectively forced the test case to use the same "random" pkey for
the whole test, unless the test run crossed a second boundary.

Only run srand() once at program startup.

This explains some very odd and persistent test failures I've been seeing.

Link: https://lkml.kernel.org/r/20210611164153.91B76FB8@viggo.jf.intel.com
Link: https://lkml.kernel.org/r/20210611164155.192D00FF@viggo.jf.intel.com
Fixes: 6e373263ce ("selftests/vm/pkeys: fix alloc_random_pkey() to make it really random")
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Suchanek <msuchanek@suse.de>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-01 11:06:06 -07:00
Alistair Popple
b659baea75 mm: selftests for exclusive device memory
Adds some selftests for exclusive device memory.

Link: https://lkml.kernel.org/r/20210616105937.23201-9-apopple@nvidia.com
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Acked-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-07-01 11:06:03 -07:00
David Hildenbrand
e5bfac53e3 selftests/vm: add test for MADV_POPULATE_(READ|WRITE)
Let's add a simple test for MADV_POPULATE_READ and MADV_POPULATE_WRITE,
verifying some error handling, that population works, and that softdirty
tracking works as expected.  For now, limit the test to private anonymous
memory.

Link: https://lkml.kernel.org/r/20210419135443.12822-6-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-06-30 20:47:31 -07:00
David Hildenbrand
2abdd8b8a2 selftests/vm: add protection_keys_32 / protection_keys_64 to gitignore
We missed adding two binaries to gitignore.

Link: https://lkml.kernel.org/r/20210419135443.12822-5-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Peter Xu <peterx@redhat.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Chris Zankel <chris@zankel.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jann Horn <jannh@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Rik van Riel <riel@surriel.com>
Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-06-30 20:47:31 -07:00
Axel Rasmussen
4a8f021ba0 userfaultfd/selftests: exercise minor fault handling shmem support
Enable test_uffdio_minor for test_type == TEST_SHMEM, and modify the test
slightly to pass in / check for the right feature flags.

Link: https://lkml.kernel.org/r/20210503180737.2487560-11-axelrasmussen@google.com
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Joe Perches <joe@perches.com>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Lokesh Gidra <lokeshgidra@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Oliver Upton <oupton@google.com>
Cc: Shaohua Li <shli@fb.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Wang Qing <wangqing@vivo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-06-30 20:47:28 -07:00