Allocate the GDT during creation of non-barebones VMs instead of waiting
until the first vCPU is created, as the whole point of non-barebones VMs
is to be able to run vCPUs, i.e. the GDT is going to get allocated no
matter what.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-13-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Map x86's exception handlers at VM creation, not vCPU setup, as the
mapping is per-VM, i.e. doesn't need to be (re)done for every vCPU.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-12-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Initialize the IDT and exception handlers for all non-barebones VMs and
vCPUs on x86. Forcing tests to manually configure the IDT just to save
8KiB of memory is a terrible tradeoff, and also leads to weird tests
(multiple tests have deliberately relied on shutdown to indicate success),
and hard-to-debug failures, e.g. instead of a precise unexpected exception
failure, tests see only shutdown.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-11-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Rename vcpu_setup() to be more descriptive and precise, there is a whole
lot of "setup" that is done for a vCPU that isn't in said helper.
No functional change intended.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-10-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Move x86's various descriptor table helpers in processor.c up above
kvm_arch_vm_post_create() and vcpu_setup() so that the helpers can be
made static and invoked from the aforementioned functions.
No functional change intended.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-9-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Explicitly clobber the guest IDT in the "delete memslot" test, which
expects the deleted memslot to result in either a KVM emulation error, or
a triple fault shutdown. A future change to the core selftests library
will configuring the guest IDT and exception handlers by default, i.e.
will install a guest #PF handler and put the guest into an infinite #NPF
loop (the guest hits a !PRESENT SPTE when trying to vector a #PF, and KVM
reinjects the #PF without fixing the #NPF, because there is no memslot).
Note, it's not clear whether or not KVM's behavior is reasonable in this
case, e.g. arguably KVM should try (and fail) to emulate in response to
the #NPF. But barring a goofy/broken userspace, this scenario will likely
never happen in practice. Punt the KVM investigation to the future.
Link: https://lore.kernel.org/r/20240314232637.2538648-8-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Rework platform_info_test to actually handle and verify the expected #GP
on RDMSR when the associated KVM capability is disabled. Currently, the
test _deliberately_ doesn't handle the #GP, and instead lets it escalated
to a triple fault shutdown.
In addition to verifying that KVM generates the correct fault, handling
the #GP will be necessary (without even more shenanigans) when a future
change to the core KVM selftests library configures the IDT and exception
handlers by default (the test subtly relies on the IDT limit being '0').
Link: https://lore.kernel.org/r/20240314232637.2538648-7-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
As a first step toward gracefully handling the expected #GP on RDMSR in
platform_info_test, move the test's assert on the non-faulting RDMSR
result into the guest itself. This will allow using a unified flow for
the host userspace side of things.
Link: https://lore.kernel.org/r/20240314232637.2538648-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Fix an off-by-one bug in the initialization of the GDT limit, which as
defined in the SDM is inclusive, not exclusive.
Note, vcpu_init_descriptor_tables() gets the limit correct, it's only
vcpu_setup() that is broken, i.e. only tests that _don't_ invoke
vcpu_init_descriptor_tables() can have problems. And the fact that KVM
effectively initializes the GDT twice will be cleaned up in the near
future.
Signed-off-by: Ackerley Tng <ackerleytng@google.com>
[sean: rewrite changelog]
Link: https://lore.kernel.org/r/20240314232637.2538648-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Now that kvm_vm_arch exists, move the GDT, IDT, and TSS fields to x86's
implementation, as the structures are firmly x86-only.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Move the base types unique to KVM selftests out of kvm_util.h and into a
new header, kvm_util_types.h. This will allow kvm_util_arch.h, i.e. core
arch headers, to reference common types, e.g. vm_vaddr_t and vm_paddr_t.
No functional change intended.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Effectively revert the movement of code from kvm_util.h => kvm_util_base.h,
as the TL;DR of the justification for the move was to avoid #idefs and/or
circular dependencies between what ended up being ucall_common.h and what
was (and now again, is), kvm_util.h.
But avoiding #ifdef and circular includes is trivial: don't do that. The
cost of removing kvm_util_base.h is a few extra includes of ucall_common.h,
but that cost is practically nothing. On the other hand, having a "base"
version of a header that is really just the header itself is confusing,
and makes it weird/hard to choose names for headers that actually are
"base" headers, e.g. to hold core KVM selftests typedefs.
For all intents and purposes, this reverts commit
7d9a662ed9.
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Link: https://lore.kernel.org/r/20240314232637.2538648-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Override vcpu_arch_put_guest() to randomly force emulation on supported
accesses. Force emulation of LOCK CMPXCHG as well as a regular MOV to
stress KVM's emulation of atomic accesses, which has a unique path in
KVM's emulator.
Arbitrarily give all the decisions 50/50 odds; absent much, much more
sophisticated infrastructure for generating random numbers, it's highly
unlikely that doing more than a coin flip with affect selftests' ability
to find KVM bugs.
This is effectively a regression test for commit 910c57dfa4 ("KVM: x86:
Mark target gfn of emulated atomic instruction as dirty").
Link: https://lore.kernel.org/r/20240314185459.2439072-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Introduce a macro, vcpu_arch_put_guest(), for "putting" values to memory
from guest code in "interesting" situations, e.g. when writing memory that
is being dirty logged. Structure the macro so that arch code can provide
a custom implementation, e.g. x86 will use the macro to force emulation of
the access.
Use the helper in dirty_log_test, which is of particular interest (see
above), and in xen_shinfo_test, which isn't all that interesting, but
provides a second usage of the macro with a different size operand
(uint8_t versus uint64_t), i.e. to help verify that the macro works for
more than just 64-bit values.
Use "put" as the verb to align with the kernel's {get,put}_user()
terminology.
Link: https://lore.kernel.org/r/20240314185459.2439072-5-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add a global snapshot of kvm_is_forced_emulation_enabled() and sync it to
all VMs by default so that core library code can force emulation, e.g. to
allow for easier testing of the intersections between emulation and other
features in KVM.
Link: https://lore.kernel.org/r/20240314185459.2439072-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Move memstress' random bool logic into common code to avoid reinventing
the wheel for basic yes/no decisions. Provide an outer wrapper to handle
the basic/common case of just wanting a 50/50 chance of something
happening.
Link: https://lore.kernel.org/r/20240314185459.2439072-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Add a global guest_random_state instance, i.e. a pseudo-RNG, so that an
RNG is available for *all* tests. This will allow randomizing behavior
in core library code, e.g. x86 will utilize the pRNG to conditionally
force emulation of writes from within common guest code.
To allow for deterministic runs, and to be compatible with existing tests,
allow tests to override the seed used to initialize the pRNG.
Note, the seed *must* be overwritten before a VM is created in order for
the seed to take effect, though it's perfectly fine for a test to
initialize multiple VMs with different seeds.
And as evidenced by memstress_guest_code(), it's also a-ok to instantiate
more RNGs using the global seed (or a modified version of it). The goal
of the global RNG is purely to ensure that _a_ source of random numbers is
available, it doesn't have to be the _only_ RNG.
Link: https://lore.kernel.org/r/20240314185459.2439072-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Define _GNU_SOURCE is the base CFLAGS instead of relying on selftests to
manually #define _GNU_SOURCE, which is repetitive and error prone. E.g.
kselftest_harness.h requires _GNU_SOURCE for asprintf(), but if a selftest
includes kvm_test_harness.h after stdio.h, the include guards result in
the effective version of stdio.h consumed by kvm_test_harness.h not
defining asprintf():
In file included from x86_64/fix_hypercall_test.c:12:
In file included from include/kvm_test_harness.h:11:
../kselftest_harness.h:1169:2: error: call to undeclared function
'asprintf'; ISO C99 and later do not support implicit function declarations
[-Wimplicit-function-declaration]
1169 | asprintf(&test_name, "%s%s%s.%s", f->name,
| ^
When including the rseq selftest's "library" code, #undef _GNU_SOURCE so
that rseq.c controls whether or not it wants to build with _GNU_SOURCE.
Reported-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Oliver Upton <oliver.upton@linux.dev>
Acked-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240423190308.2883084-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-18-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Allow the caller to set the initial state of the VM. Doing this
before sev_vm_launch() matters for SEV-ES, since that is the
place where the VMSA is updated and after which the guest state
becomes sealed.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-17-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This removes the concept of "subtypes", instead letting the tests use proper
VM types that were recently added. While the sev_init_vm() and sev_es_init_vm()
are still able to operate with the legacy KVM_SEV_INIT and KVM_SEV_ES_INIT
ioctls, this is limited to VMs that are created manually with
vm_create_barebones().
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-16-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20240404121327.3107131-15-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
There are a couple of fixups for this cycle's vmalloc changes and one for
the stackdepot changes. And a fix for a very old x86 PAT issue which can
cause a warning splat.
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Merge tag 'mm-hotfixes-stable-2024-04-05-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"8 hotfixes, 3 are cc:stable
There are a couple of fixups for this cycle's vmalloc changes and one
for the stackdepot changes. And a fix for a very old x86 PAT issue
which can cause a warning splat"
* tag 'mm-hotfixes-stable-2024-04-05-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
stackdepot: rename pool_index to pool_index_plus_1
x86/mm/pat: fix VM_PAT handling in COW mappings
MAINTAINERS: change vmware.com addresses to broadcom.com
selftests/mm: include strings.h for ffsl
mm: vmalloc: fix lockdep warning
mm: vmalloc: bail out early in find_vmap_area() if vmap is not init
init: open output files from cpio unpacking with O_LARGEFILE
mm/secretmem: fix GUP-fast succeeding on secretmem folios
Fairly usual collection of driver and core fixes. The large selftest
accompanying one of the fixes is also becoming a common occurrence.
Current release - regressions:
- ipv6: fix infinite recursion in fib6_dump_done()
- net/rds: fix possible null-deref in newly added error path
Current release - new code bugs:
- net: do not consume a full cacheline for system_page_pool
- bpf: fix bpf_arena-related file descriptor leaks in the verifier
- drv: ice: fix freeing uninitialized pointers, fixing misuse of
the newfangled __free() auto-cleanup
Previous releases - regressions:
- x86/bpf: fixes the BPF JIT with retbleed=stuff
- xen-netfront: add missing skb_mark_for_recycle, fix page pool
accounting leaks, revealed by recently added explicit warning
- tcp: fix bind() regression for v6-only wildcard and v4-mapped-v6
non-wildcard addresses
- Bluetooth:
- replace "hci_qca: Set BDA quirk bit if fwnode exists in DT"
with better workarounds to un-break some buggy Qualcomm devices
- set conn encrypted before conn establishes, fix re-connecting
to some headsets which use slightly unusual sequence of msgs
- mptcp:
- prevent BPF accessing lowat from a subflow socket
- don't account accept() of non-MPC client as fallback to TCP
- drv: mana: fix Rx DMA datasize and skb_over_panic
- drv: i40e: fix VF MAC filter removal
Previous releases - always broken:
- gro: various fixes related to UDP tunnels - netns crossing problems,
incorrect checksum conversions, and incorrect packet transformations
which may lead to panics
- bpf: support deferring bpf_link dealloc to after RCU grace period
- nf_tables:
- release batch on table validation from abort path
- release mutex after nft_gc_seq_end from abort path
- flush pending destroy work before exit_net release
- drv: r8169: skip DASH fw status checks when DASH is disabled
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter, bluetooth and bpf.
Fairly usual collection of driver and core fixes. The large selftest
accompanying one of the fixes is also becoming a common occurrence.
Current release - regressions:
- ipv6: fix infinite recursion in fib6_dump_done()
- net/rds: fix possible null-deref in newly added error path
Current release - new code bugs:
- net: do not consume a full cacheline for system_page_pool
- bpf: fix bpf_arena-related file descriptor leaks in the verifier
- drv: ice: fix freeing uninitialized pointers, fixing misuse of the
newfangled __free() auto-cleanup
Previous releases - regressions:
- x86/bpf: fixes the BPF JIT with retbleed=stuff
- xen-netfront: add missing skb_mark_for_recycle, fix page pool
accounting leaks, revealed by recently added explicit warning
- tcp: fix bind() regression for v6-only wildcard and v4-mapped-v6
non-wildcard addresses
- Bluetooth:
- replace "hci_qca: Set BDA quirk bit if fwnode exists in DT" with
better workarounds to un-break some buggy Qualcomm devices
- set conn encrypted before conn establishes, fix re-connecting to
some headsets which use slightly unusual sequence of msgs
- mptcp:
- prevent BPF accessing lowat from a subflow socket
- don't account accept() of non-MPC client as fallback to TCP
- drv: mana: fix Rx DMA datasize and skb_over_panic
- drv: i40e: fix VF MAC filter removal
Previous releases - always broken:
- gro: various fixes related to UDP tunnels - netns crossing
problems, incorrect checksum conversions, and incorrect packet
transformations which may lead to panics
- bpf: support deferring bpf_link dealloc to after RCU grace period
- nf_tables:
- release batch on table validation from abort path
- release mutex after nft_gc_seq_end from abort path
- flush pending destroy work before exit_net release
- drv: r8169: skip DASH fw status checks when DASH is disabled"
* tag 'net-6.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (81 commits)
netfilter: validate user input for expected length
net/sched: act_skbmod: prevent kernel-infoleak
net: usb: ax88179_178a: avoid the interface always configured as random address
net: dsa: sja1105: Fix parameters order in sja1110_pcs_mdio_write_c45()
net: ravb: Always update error counters
net: ravb: Always process TX descriptor ring
netfilter: nf_tables: discard table flag update with pending basechain deletion
netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get()
netfilter: nf_tables: reject new basechain after table flag update
netfilter: nf_tables: flush pending destroy work before exit_net release
netfilter: nf_tables: release mutex after nft_gc_seq_end from abort path
netfilter: nf_tables: release batch on table validation from abort path
Revert "tg3: Remove residual error handling in tg3_suspend"
tg3: Remove residual error handling in tg3_suspend
net: mana: Fix Rx DMA datasize and skb_over_panic
net/sched: fix lockdep splat in qdisc_tree_reduce_backlog()
net: phy: micrel: lan8814: Fix when enabling/disabling 1-step timestamping
net: stmmac: fix rx queue priority assignment
net: txgbe: fix i2c dev name cannot match clkdev
net: fec: Set mac_managed_pm during probe
...
- Ensure perf events programmed to count during guest execution
are actually enabled before entering the guest in the nVHE
configuration.
- Restore out-of-range handler for stage-2 translation faults.
- Several fixes to stage-2 TLB invalidations to avoid stale
translations, possibly including partial walk caches.
- Fix early handling of architectural VHE-only systems to ensure E2H is
appropriately set.
- Correct a format specifier warning in the arch_timer selftest.
- Make the KVM banner message correctly handle all of the possible
configurations.
RISC-V:
- Remove redundant semicolon in num_isa_ext_regs().
- Fix APLIC setipnum_le/be write emulation.
- Fix APLIC in_clrip[x] read emulation.
x86:
- Fix a bug in KVM_SET_CPUID{2,} where KVM looks at the wrong CPUID entries (old
vs. new) and ultimately neglects to clear PV_UNHALT from vCPUs with HLT-exiting
disabled.
- Documentation fixes for SEV.
- Fix compat ABI for KVM_MEMORY_ENCRYPT_OP.
- Fix a 14-year-old goof in a declaration shared by host and guest; the enabled
field used by Linux when running as a guest pushes the size of "struct
kvm_vcpu_pv_apf_data" from 64 to 68 bytes. This is really unconsequential
because KVM never consumes anything beyond the first 64 bytes, but the
resulting struct does not match the documentation.
Selftests:
- Fix spelling mistake in arch_timer selftest.
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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:
- Ensure perf events programmed to count during guest execution are
actually enabled before entering the guest in the nVHE
configuration
- Restore out-of-range handler for stage-2 translation faults
- Several fixes to stage-2 TLB invalidations to avoid stale
translations, possibly including partial walk caches
- Fix early handling of architectural VHE-only systems to ensure E2H
is appropriately set
- Correct a format specifier warning in the arch_timer selftest
- Make the KVM banner message correctly handle all of the possible
configurations
RISC-V:
- Remove redundant semicolon in num_isa_ext_regs()
- Fix APLIC setipnum_le/be write emulation
- Fix APLIC in_clrip[x] read emulation
x86:
- Fix a bug in KVM_SET_CPUID{2,} where KVM looks at the wrong CPUID
entries (old vs. new) and ultimately neglects to clear PV_UNHALT
from vCPUs with HLT-exiting disabled
- Documentation fixes for SEV
- Fix compat ABI for KVM_MEMORY_ENCRYPT_OP
- Fix a 14-year-old goof in a declaration shared by host and guest;
the enabled field used by Linux when running as a guest pushes the
size of "struct kvm_vcpu_pv_apf_data" from 64 to 68 bytes. This is
really unconsequential because KVM never consumes anything beyond
the first 64 bytes, but the resulting struct does not match the
documentation
Selftests:
- Fix spelling mistake in arch_timer selftest"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (25 commits)
KVM: arm64: Rationalise KVM banner output
arm64: Fix early handling of FEAT_E2H0 not being implemented
KVM: arm64: Ensure target address is granule-aligned for range TLBI
KVM: arm64: Use TLBI_TTL_UNKNOWN in __kvm_tlb_flush_vmid_range()
KVM: arm64: Don't pass a TLBI level hint when zapping table entries
KVM: arm64: Don't defer TLB invalidation when zapping table entries
KVM: selftests: Fix __GUEST_ASSERT() format warnings in ARM's arch timer test
KVM: arm64: Fix out-of-IPA space translation fault handling
KVM: arm64: Fix host-programmed guest events in nVHE
RISC-V: KVM: Fix APLIC in_clrip[x] read emulation
RISC-V: KVM: Fix APLIC setipnum_le/be write emulation
RISC-V: KVM: Remove second semicolon
KVM: selftests: Fix spelling mistake "trigged" -> "triggered"
Documentation: kvm/sev: clarify usage of KVM_MEMORY_ENCRYPT_OP
Documentation: kvm/sev: separate description of firmware
KVM: SEV: fix compat ABI for KVM_MEMORY_ENCRYPT_OP
KVM: selftests: Check that PV_UNHALT is cleared when HLT exiting is disabled
KVM: x86: Use actual kvm_cpuid.base for clearing KVM_FEATURE_PV_UNHALT
KVM: x86: Introduce __kvm_get_hypervisor_cpuid() helper
KVM: SVM: Return -EINVAL instead of -EBUSY on attempt to re-init SEV/SEV-ES
...
- Ensure perf events programmed to count during guest execution
are actually enabled before entering the guest in the nVHE
configuration.
- Restore out-of-range handler for stage-2 translation faults.
- Several fixes to stage-2 TLB invalidations to avoid stale
translations, possibly including partial walk caches.
- Fix early handling of architectural VHE-only systems to ensure E2H is
appropriately set.
- Correct a format specifier warning in the arch_timer selftest.
- Make the KVM banner message correctly handle all of the possible
configurations.
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Merge tag 'kvmarm-fixes-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.9, part #1
- Ensure perf events programmed to count during guest execution
are actually enabled before entering the guest in the nVHE
configuration.
- Restore out-of-range handler for stage-2 translation faults.
- Several fixes to stage-2 TLB invalidations to avoid stale
translations, possibly including partial walk caches.
- Fix early handling of architectural VHE-only systems to ensure E2H is
appropriately set.
- Correct a format specifier warning in the arch_timer selftest.
- Make the KVM banner message correctly handle all of the possible
configurations.
There's a bug in pm_nl_check_endpoint(), 'dev' didn't be parsed correctly.
If calling it in the 2nd test of endpoint_tests() too, it fails with an
error like this:
creation [FAIL] expected '10.0.2.2 id 2 subflow dev dev' \
found '10.0.2.2 id 2 subflow dev ns2eth2'
The reason is '$2' should be set to 'dev', not '$1'. This patch fixes it.
Fixes: 69c6ce7b6e ("selftests: mptcp: add implicit endpoint test case")
Cc: stable@vger.kernel.org
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240329-upstream-net-20240329-fallback-mib-v1-2-324a8981da48@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Current MPTCP servers increment MPTcpExtMPCapableFallbackACK when they
accept non-MPC connections. As reported by Christoph, this is "surprising"
because the counter might become greater than MPTcpExtMPCapableSYNRX.
MPTcpExtMPCapableFallbackACK counter's name suggests it should only be
incremented when a connection was seen using MPTCP options, then a
fallback to TCP has been done. Let's do that by incrementing it when
the subflow context of an inbound MPC connection attempt is dropped.
Also, update mptcp_connect.sh kselftest, to ensure that the
above MIB does not increment in case a pure TCP client connects to a
MPTCP server.
Fixes: fc518953bc ("mptcp: add and use MIB counter infrastructure")
Cc: stable@vger.kernel.org
Reported-by: Christoph Paasch <cpaasch@apple.com>
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/449
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240329-upstream-net-20240329-fallback-mib-v1-1-324a8981da48@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The netdev CI runs in a VM and captures serial, so stdout and
stderr get combined. Because there's a missing new line in
stderr the test ends up corrupting KTAP:
# Successok 1 selftests: net: reuseaddr_conflict
which should have been:
# Success
ok 1 selftests: net: reuseaddr_conflict
Fixes: 422d8dc6fd ("selftest: add a reuseaddr test")
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Link: https://lore.kernel.org/r/20240329160559.249476-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This kselftest fixes update for Linux 6.9-rc2 consists of fixes
to seccomp and ftrace tests and a change to add config file for
dmabuf-heap test to increase coverage.
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Merge tag 'linux_kselftest-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"Fixes to seccomp and ftrace tests and a change to add config file for
dmabuf-heap test to increase coverage"
* tag 'linux_kselftest-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: dmabuf-heap: add config file for the test
selftests/seccomp: Try to fit runtime of benchmark into timeout
selftests/ftrace: Fix event filter target_func selection
This kunit update for Linux 6.9-rc2 consists of one urgent fix for
--alltests build failure related to renaming of CONFIG_DAMON_DBGFS
to DAMON_DBGFS_DEPRECATED to the missing config option.
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Merge tag 'linux_kselftest-kunit-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit fixes from Shuah Khan:
"One urgent fix for --alltests build failure related to renaming of
CONFIG_DAMON_DBGFS to DAMON_DBGFS_DEPRECATED to the missing config
option"
* tag 'linux_kselftest-kunit-fixes-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: configs: Enable CONFIG_DAMON_DBGFS_DEPRECATED for --alltests
This patch adds two tests using SO_REUSEADDR and SO_REUSEPORT and
defines errno for each test case.
SO_REUSEADDR/SO_REUSEPORT is set for the per-fixture two bind()
calls.
The notable pattern is the pair of v6only [::] and plain [::].
The two sockets are put into the same tb2, where per-bucket v6only
flag would be useless to detect bind() conflict.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240326204251.51301-9-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
bhash2 was not well tested for IPv6-only sockets.
This patch adds test cases where we set IPV6_V6ONLY for per-fixture
bind() calls if variant->ipv6_only[i] is true.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240326204251.51301-8-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In addtition to the two addresses defined in the fixtures, this patch
add 6 more bind calls():
* 0.0.0.0
* 127.0.0.1
* ::
* ::1
* ::ffff:0.0.0.0
* ::ffff:127.0.0.1
The first two per-fixture bind() calls control how inet_bind2_bucket
is created, and the rest 6 bind() calls cover as many conflicting
patterns as possible.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240326204251.51301-7-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We don't have bind() conflict tests for the same protocol pairs.
Let's add them except for the same address pair, which will be
covered by the following patch adding 6 more bind() calls for
each test case.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240326204251.51301-6-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, bind_wildcard.c calls bind() twice for two addresses and
checks the pre-defined errno against the 2nd call. Also, the two
bind() calls are swapped to cover various patterns how bind buckets
are created.
However, only testing two addresses is insufficient to detect regression.
So, we will add more bind() calls, and then, we need to define different
errno for each bind() per test case.
As a prepartion, let's define the reverse order bind() test cases as
fixtures.
No functional changes are intended.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240326204251.51301-5-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, bind_wildcard.c tests only (IPv4, IPv6) pairs, but we will
add more tests for the same protocol pairs.
This patch makes it possible by changing the address pointer to void.
No functional changes are intended.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240326204251.51301-4-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The config fragment enlists all the config options needed for the test.
This config is merged into the kernel's config on which this test is
run.
Fixed whitespace errors during commit:
Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The seccomp benchmark runs five scenarios, one calibration run with no
seccomp filters enabled then four further runs each adding a filter. The
calibration run times itself for 15s and then each additional run executes
for the same number of times.
Currently the seccomp tests, including the benchmark, run with an extended
120s timeout but this is not sufficient to robustly run the tests on a lot
of platforms. Sample timings from some recent runs:
Platform Run 1 Run 2 Run 3 Run 4
--------- ----- ----- ----- -----
PowerEdge R200 16.6s 16.6s 31.6s 37.4s
BBB (arm) 20.4s 20.4s 54.5s
Synquacer (arm64) 20.7s 23.7s 40.3s
The x86 runs from the PowerEdge are quite marginal and routinely fail, for
the successful run reported here the timed portions of the run are at
117.2s leaving less than 3s of margin which is frequently breached. The
added overhead of adding filters on the other platforms is such that there
is no prospect of their runs fitting into the 120s timeout, especially
on 32 bit arm where there is no BPF JIT.
While we could lower the time we calibrate for I'm also already seeing the
currently completing runs reporting issues with the per filter overheads
not matching expectations:
Let's instead raise the timeout to 180s which is only a 50% increase on the
current timeout which is itself not *too* large given that there's only two
tests in this suite.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
The event filter function test has been failing in our internal test
farm:
| # not ok 33 event filter function - test event filtering on functions
Running the test in verbose mode indicates that this is because the test
erroneously determines that kmem_cache_free() is the most common caller
of kmem_cache_free():
# # + cut -d: -f3 trace
# # + sed s/call_site=([^+]*)+0x.*/1/
# # + sort
# # + uniq -c
# # + sort
# # + tail -n 1
# # + sed s/^[ 0-9]*//
# # + target_func=kmem_cache_free
... and as kmem_cache_free() doesn't call itself, setting this as the
filter function for kmem_cache_free() results in no hits, and
consequently the test fails:
# # + grep kmem_cache_free trace
# # + grep kmem_cache_free
# # + wc -l
# # + hitcnt=0
# # + grep kmem_cache_free trace
# # + grep -v kmem_cache_free
# # + wc -l
# # + misscnt=0
# # + [ 0 -eq 0 ]
# # + exit_fail
This seems to be because the system in question has tasks with ':' in
their name (which a number of kernel worker threads have). These show up
in the trace, e.g.
test:.sh-1299 [004] ..... 2886.040608: kmem_cache_free: call_site=putname+0xa4/0xc8 ptr=000000000f4d22f4 name=names_cache
... and so when we try to extact the call_site with:
cut -d: -f3 trace | sed 's/call_site=\([^+]*\)+0x.*/\1/'
... the 'cut' command will extrace the column containing
'kmem_cache_free' rather than the column containing 'call_site=...', and
the 'sed' command will leave this unchanged. Consequently, the test will
decide to use 'kmem_cache_free' as the filter function, resulting in the
failure seen above.
Fix this by matching the 'call_site=<func>' part specifically to extract
the function name.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Aishwarya TCV <aishwarya.tcv@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Cc: linux-trace-kernel@vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
UDP tunnel packets can't be GRO in-between their endpoints as this
causes different issues. The UDP GRO fwd vxlan tests were relying on
this and their expectations have to be fixed.
We keep both vxlan tests and expected no GRO from happening. The vxlan
UDP GRO bench test was removed as it's not providing any valuable
information now.
Fixes: a062260a9d ("selftests: net: add UDP GRO forwarding self-tests")
Signed-off-by: Antoine Tenart <atenart@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Current release - regressions:
- ipv6: fix address dump when IPv6 is disabled on an interface
Current release - new code bugs:
- bpf: temporarily disable atomic operations in BPF arena
- nexthop: fix uninitialized variable in nla_put_nh_group_stats()
Previous releases - regressions:
- bpf: protect against int overflow for stack access size
- hsr: fix the promiscuous mode in offload mode
- wifi: don't always use FW dump trig
- tls: adjust recv return with async crypto and failed copy to userspace
- tcp: properly terminate timers for kernel sockets
- ice: fix memory corruption bug with suspend and rebuild
- at803x: fix kernel panic with at8031_probe
- qeth: handle deferred cc1
Previous releases - always broken:
- bpf: fix bug in BPF_LDX_MEMSX
- netfilter: reject table flag and netdev basechain updates
- inet_defrag: prevent sk release while still in use
- wifi: pick the version of SESSION_PROTECTION_NOTIF
- wwan: t7xx: split 64bit accesses to fix alignment issues
- mlxbf_gige: call request_irq() after NAPI initialized
- hns3: fix kernel crash when devlink reload during pf initialization
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf, WiFi and netfilter.
Current release - regressions:
- ipv6: fix address dump when IPv6 is disabled on an interface
Current release - new code bugs:
- bpf: temporarily disable atomic operations in BPF arena
- nexthop: fix uninitialized variable in nla_put_nh_group_stats()
Previous releases - regressions:
- bpf: protect against int overflow for stack access size
- hsr: fix the promiscuous mode in offload mode
- wifi: don't always use FW dump trig
- tls: adjust recv return with async crypto and failed copy to
userspace
- tcp: properly terminate timers for kernel sockets
- ice: fix memory corruption bug with suspend and rebuild
- at803x: fix kernel panic with at8031_probe
- qeth: handle deferred cc1
Previous releases - always broken:
- bpf: fix bug in BPF_LDX_MEMSX
- netfilter: reject table flag and netdev basechain updates
- inet_defrag: prevent sk release while still in use
- wifi: pick the version of SESSION_PROTECTION_NOTIF
- wwan: t7xx: split 64bit accesses to fix alignment issues
- mlxbf_gige: call request_irq() after NAPI initialized
- hns3: fix kernel crash when devlink reload during pf
initialization"
* tag 'net-6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (81 commits)
inet: inet_defrag: prevent sk release while still in use
Octeontx2-af: fix pause frame configuration in GMP mode
net: lan743x: Add set RFE read fifo threshold for PCI1x1x chips
net: bcmasp: Remove phy_{suspend/resume}
net: bcmasp: Bring up unimac after PHY link up
net: phy: qcom: at803x: fix kernel panic with at8031_probe
netfilter: arptables: Select NETFILTER_FAMILY_ARP when building arp_tables.c
netfilter: nf_tables: skip netdev hook unregistration if table is dormant
netfilter: nf_tables: reject table flag and netdev basechain updates
netfilter: nf_tables: reject destroy command to remove basechain hooks
bpf: update BPF LSM designated reviewer list
bpf: Protect against int overflow for stack access size
bpf: Check bloom filter map value size
bpf: fix warning for crash_kexec
selftests: netdevsim: set test timeout to 10 minutes
net: wan: framer: Add missing static inline qualifiers
mlxbf_gige: call request_irq() after NAPI initialized
tls: get psock ref after taking rxlock to avoid leak
selftests: tls: add test with a partially invalid iov
tls: adjust recv return with async crypto and failed copy to userspace
...
This is required, as CONFIG_DAMON_DEBUGFS is enabled, and --alltests UML
builds will fail due to the missing config option otherwise.
Fixes: f4cba4bf67 ("mm/damon: rename CONFIG_DAMON_DBGFS to DAMON_DBGFS_DEPRECATED")
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Merge tag 'for-net' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2024-03-27
The following pull-request contains BPF updates for your *net* tree.
We've added 4 non-merge commits during the last 1 day(s) which contain
a total of 5 files changed, 26 insertions(+), 3 deletions(-).
The main changes are:
1) Fix bloom filter value size validation and protect the verifier
against such mistakes, from Andrei.
2) Fix build due to CONFIG_KEXEC_CORE/CRASH_DUMP split, from Hari.
3) Update bpf_lsm maintainers entry, from Matt.
* tag 'for-net' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: update BPF LSM designated reviewer list
bpf: Protect against int overflow for stack access size
bpf: Check bloom filter map value size
bpf: fix warning for crash_kexec
====================
Link: https://lore.kernel.org/r/20240328012938.24249-1-alexei.starovoitov@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The first fixes for v6.9. Ping-Ke Shih now maintains a separate tree
for Realtek drivers, document that in the MAINTAINERS. Plenty of fixes
for both to stack and iwlwifi. Our kunit tests were working only on um
architecture but that's fixed now.
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Merge tag 'wireless-2024-03-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Kalle Valo says:
====================
wireless fixes for v6.9-rc2
The first fixes for v6.9. Ping-Ke Shih now maintains a separate tree
for Realtek drivers, document that in the MAINTAINERS. Plenty of fixes
for both to stack and iwlwifi. Our kunit tests were working only on um
architecture but that's fixed now.
* tag 'wireless-2024-03-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless: (21 commits)
MAINTAINERS: wifi: mwifiex: add Francesco as reviewer
kunit: fix wireless test dependencies
wifi: iwlwifi: mvm: include link ID when releasing frames
wifi: iwlwifi: mvm: handle debugfs names more carefully
wifi: iwlwifi: mvm: guard against invalid STA ID on removal
wifi: iwlwifi: read txq->read_ptr under lock
wifi: iwlwifi: fw: don't always use FW dump trig
wifi: iwlwifi: mvm: rfi: fix potential response leaks
wifi: mac80211: correctly set active links upon TTLM
wifi: iwlwifi: mvm: Configure the link mapping for non-MLD FW
wifi: iwlwifi: mvm: consider having one active link
wifi: iwlwifi: mvm: pick the version of SESSION_PROTECTION_NOTIF
wifi: mac80211: fix prep_connection error path
wifi: cfg80211: fix rdev_dump_mpp() arguments order
wifi: iwlwifi: mvm: disable MLO for the time being
wifi: cfg80211: add a flag to disable wireless extensions
wifi: mac80211: fix ieee80211_bss_*_flags kernel-doc
wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes
wifi: mac80211: fix mlme_link_id_dbg()
MAINTAINERS: wifi: add git tree for Realtek WiFi drivers
...
====================
Link: https://lore.kernel.org/r/20240327191346.1A1EAC433C7@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
or aren't considered suitable for backporting.
zswap figures prominently in the post-6.8 issues - folloup against the
large amount of changes we have just made to that code.
Apart from that, all over the map.
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Merge tag 'mm-hotfixes-stable-2024-03-27-11-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"Various hotfixes. About half are cc:stable and the remainder address
post-6.8 issues or aren't considered suitable for backporting.
zswap figures prominently in the post-6.8 issues - folloup against the
large amount of changes we have just made to that code.
Apart from that, all over the map"
* tag 'mm-hotfixes-stable-2024-03-27-11-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits)
crash: use macro to add crashk_res into iomem early for specific arch
mm: zswap: fix data loss on SWP_SYNCHRONOUS_IO devices
selftests/mm: fix ARM related issue with fork after pthread_create
hexagon: vmlinux.lds.S: handle attributes section
userfaultfd: fix deadlock warning when locking src and dst VMAs
tmpfs: fix race on handling dquot rbtree
selftests/mm: sigbus-wp test requires UFFD_FEATURE_WP_HUGETLBFS_SHMEM
mm: zswap: fix writeback shinker GFP_NOIO/GFP_NOFS recursion
ARM: prctl: reject PR_SET_MDWE on pre-ARMv6
prctl: generalize PR_SET_MDWE support check to be per-arch
MAINTAINERS: remove incorrect M: tag for dm-devel@lists.linux.dev
mm: zswap: fix kernel BUG in sg_init_one
selftests: mm: restore settings from only parent process
tools/Makefile: remove cgroup target
mm: cachestat: fix two shmem bugs
mm: increase folio batch size
mm,page_owner: fix recursion
mailmap: update entry for Leonard Crestez
init: open /initrd.image with O_LARGEFILE
selftests/mm: Fix build with _FORTIFY_SOURCE
...
- Fix selftests to conform to the TAP output format (Muhammad Usama Anjum)
- Fix NOMMU linux_binprm::exec pointer in auxv (Max Filippov)
- Replace deprecated strncpy usage (Justin Stitt)
- Replace another /bin/sh instance in selftests
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Merge tag 'execve-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull execve fixes from Kees Cook:
- Fix selftests to conform to the TAP output format (Muhammad Usama
Anjum)
- Fix NOMMU linux_binprm::exec pointer in auxv (Max Filippov)
- Replace deprecated strncpy usage (Justin Stitt)
- Replace another /bin/sh instance in selftests
* tag 'execve-v6.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
binfmt: replace deprecated strncpy
exec: Fix NOMMU linux_binprm::exec in transfer_args_to_stack()
selftests/exec: Convert remaining /bin/sh to /bin/bash
selftests/exec: execveat: Improve debug reporting
selftests/exec: recursion-depth: conform test to TAP format output
selftests/exec: load_address: conform test to TAP format output
selftests/exec: binfmt_script: Add the overall result line according to TAP
