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2020-07-31selftests: mptcp: make 2nd net namespace use tcp syn cookies unconditionallyFlorian Westphal
check we can establish connections also when syn cookies are in use. Check that MPTcpExtMPCapableSYNRX and MPTcpExtMPCapableACKRX increase for each MPTCP test. Check TcpExtSyncookiesSent and TcpExtSyncookiesRecv increase in netns2. Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-31csky: Add SECCOMP_FILTER supportedGuo Ren
secure_computing() is called first in syscall_trace_enter() so that a system call will be aborted quickly without doing succeeding syscall tracing if seccomp rules want to deny that system call. TODO: - Update https://github.com/seccomp/libseccomp csky support Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Cc: Arnd Bergmann <arnd@arndb.de>
2020-07-30selftests: txtimestamp: add flag for timestamp validation tolerance.Jian Yang
The txtimestamp selftest sets a fixed 500us tolerance. This value was arrived at experimentally. Some platforms have higher variances. Make this adjustable by adding the following flag: -t N: tolerance (usec) for timestamp validation. Signed-off-by: Jian Yang <jianyang@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-30selftests/bpf: fix netdevsim trap_flow_action_cookie readHangbin Liu
When read netdevsim trap_flow_action_cookie, we need to init it first, or we will get "Invalid argument" error. Fixes: d3cbb907ae57 ("netdevsim: add ACL trap reporting cookie as a metadata") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-31selftests/bpf: Omit nodad flag when adding addresses to loopbackJakub Sitnicki
Setting IFA_F_NODAD flag for IPv6 addresses to add to loopback is unnecessary. Duplicate Address Detection does not happen on loopback device. Also, passing 'nodad' flag to 'ip address' breaks libbpf CI, which runs in an environment with BusyBox implementation of 'ip' command, that doesn't understand this flag. Fixes: 0ab5539f8584 ("selftests/bpf: Tests for BPF_SK_LOOKUP attach point") Reported-by: Andrii Nakryiko <andrii.nakryiko@gmail.com> Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Andrii Nakryiko <andrii@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200730125325.1869363-1-jakub@cloudflare.com
2020-07-31selftests/bpf: Don't destroy failed linkAndrii Nakryiko
Check that link is NULL or proper pointer before invoking bpf_link__destroy(). Not doing this causes crash in test_progs, when cg_storage_multi selftest fails. Fixes: 3573f384014f ("selftests/bpf: Test CGROUP_STORAGE behavior on shared egress + ingress") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200729045056.3363921-1-andriin@fb.com
2020-07-31selftests/bpf: Add xdpdrv mode for test_xdp_redirectHangbin Liu
This patch add xdpdrv mode for test_xdp_redirect.sh since veth has support native mode. After update here is the test result: # ./test_xdp_redirect.sh selftests: test_xdp_redirect xdpgeneric [PASS] selftests: test_xdp_redirect xdpdrv [PASS] Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: William Tu <u9012063@gmail.com> Link: https://lore.kernel.org/bpf/20200729085658.403794-1-liuhangbin@gmail.com
2020-07-31selftests/bpf: Verify socket storage in cgroup/sock_{create, release}Stanislav Fomichev
Augment udp_limit test to set and verify socket storage value. That should be enough to exercise the changes from the previous patch. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200729003104.1280813-2-sdf@google.com
2020-07-31selftests/bpf: Test bpf_iter buffer access with negative offsetYonghong Song
Commit afbf21dce668 ("bpf: Support readonly/readwrite buffers in verifier") added readonly/readwrite buffer support which is currently used by bpf_iter tracing programs. It has a bug with incorrect parameter ordering which later fixed by Commit f6dfbe31e8fa ("bpf: Fix swapped arguments in calls to check_buffer_access"). This patch added a test case with a negative offset access which will trigger the error path. Without Commit f6dfbe31e8fa, running the test case in the patch, the error message looks like: R1_w=rdwr_buf(id=0,off=0,imm=0) R10=fp0 ; value_sum += *(__u32 *)(value - 4); 2: (61) r1 = *(u32 *)(r1 -4) R1 invalid (null) buffer access: off=-4, size=4 With the above commit, the error message looks like: R1_w=rdwr_buf(id=0,off=0,imm=0) R10=fp0 ; value_sum += *(__u32 *)(value - 4); 2: (61) r1 = *(u32 *)(r1 -4) R1 invalid rdwr buffer access: off=-4, size=4 Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200728221801.1090406-1-yhs@fb.com
2020-07-31Merge branch 'for-mingo' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull the v5.9 RCU bits from Paul E. McKenney: - Documentation updates - Miscellaneous fixes - kfree_rcu updates - RCU tasks updates - Read-side scalability tests - SRCU updates - Torture-test updates Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-07-30selftests/powerpc: Fix online CPU selectionSandipan Das
The size of the CPU affinity mask must be large enough for systems with a very large number of CPUs. Otherwise, tests which try to determine the first online CPU by calling sched_getaffinity() will fail. This makes sure that the size of the allocated affinity mask is dependent on the number of CPUs as reported by get_nprocs_conf(). Fixes: 3752e453f6ba ("selftests/powerpc: Add tests of PMU EBBs") Reported-by: Shirisha Ganta <shiganta@in.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/a408c4b8e9a23bb39b539417a21eb0ff47bb5127.1596084858.git.sandipan@linux.ibm.com
2020-07-30selftests/bpf: Extend map-in-map selftest to detect memory leaksAndrii Nakryiko
Add test validating that all inner maps are released properly after skeleton is destroyed. To ensure determinism, trigger kernel-side synchronize_rcu() before checking map existence by their IDs. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20200729040913.2815687-2-andriin@fb.com
2020-07-29selftests: ethtool: Fix test when only two speeds are supportedAmit Cohen
The test case check_highest_speed_is_chosen() configures $h1 to advertise a subset of its supported speeds and checks that $h2 chooses the highest speed from the subset. To find the common advertised speeds between $h1 and $h2, common_speeds_get() is called. Currently, the first speed returned from common_speeds_get() is removed claiming "h1 does not advertise this speed". The claim is wrong because the function is called after $h1 already advertised a subset of speeds. In case $h1 supports only two speeds, it will advertise a single speed which will be later removed because of previously mentioned bug. This results in the test needlessly failing. When more than two speeds are supported this is not an issue because the first advertised speed is the lowest one. Fix this by not removing any speed from the list of commonly advertised speeds. Fixes: 64916b57c0b1 ("selftests: forwarding: Add speed and auto-negotiation test") Reported-by: Danielle Ratson <danieller@mellanox.com> Signed-off-by: Amit Cohen <amitc@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-29selftests/powerpc: Return skip code for spectre_v2Thadeu Lima de Souza Cascardo
When running under older versions of qemu of under newer versions with old machine types, some security features will not be reported to the guest. This will lead the guest OS to consider itself Vulnerable to spectre_v2. So, spectre_v2 test fails in such cases when the host is mitigated and miss predictions cannot be detected as expected by the test. Make it return the skip code instead, for this particular case. We don't want to miss the case when the test fails and the system reports as mitigated or not affected. But it is not a problem to miss failures when the system reports as Vulnerable. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200728155039.401445-1-cascardo@canonical.com
2020-07-29selftests/powerpc: Fix CPU affinity for child processHarish
On systems with large number of cpus, test fails trying to set affinity by calling sched_setaffinity() with smaller size for affinity mask. This patch fixes it by making sure that the size of allocated affinity mask is dependent on the number of CPUs as reported by get_nprocs(). Fixes: 00b7ec5c9cf3 ("selftests/powerpc: Import Anton's context_switch2 benchmark") Reported-by: Shirisha Ganta <shiganta@in.ibm.com> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Harish <harish@linux.ibm.com> Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Reviewed-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200609081423.529664-1-harish@linux.ibm.com
2020-07-29selftests/powerpc: Remove powerpc special cases from stack expansion testMichael Ellerman
Now that the powerpc code behaves the same as other architectures we can drop the special cases we had. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-5-mpe@ellerman.id.au
2020-07-29selftests/powerpc: Update the stack expansion testMichael Ellerman
Update the stack expansion load/store test to take into account the new allowance of 4224 bytes below the stack pointer. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-3-mpe@ellerman.id.au
2020-07-29selftests/powerpc: Add test of stack expansion logicMichael Ellerman
We have custom stack expansion checks that it turns out are extremely badly tested and contain bugs, surprise. So add some tests that exercise the code and capture the current boundary conditions. The signal test currently fails on 64-bit kernels because the 2048 byte allowance for the signal frame is too small, we will fix that in a subsequent patch. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-1-mpe@ellerman.id.au
2020-07-29selftests/powerpc: Squash spurious errors due to device removalOliver O'Halloran
For drivers that don't have the error handling callbacks we implement recovery by removing the device and re-probing it. This causes the sysfs directory for the PCI device to be removed which causes the following spurious error to be printed when checking the PE state: Breaking 0005:03:00.0... ./eeh-basic.sh: line 13: can't open /sys/bus/pci/devices/0005:03:00.0/eeh_pe_state: no such file 0005:03:00.0, waited 0/60 0005:03:00.0, waited 1/60 0005:03:00.0, waited 2/60 0005:03:00.0, waited 3/60 0005:03:00.0, waited 4/60 0005:03:00.0, waited 5/60 0005:03:00.0, waited 6/60 0005:03:00.0, waited 7/60 0005:03:00.0, Recovered after 8 seconds We currently try to avoid this by checking if the PE state file exists before reading from it. This is however inherently racy so re-work the state checking so that we only read from the file once, and we squash any errors that occur while reading. Fixes: 85d86c8aa52e ("selftests/powerpc: Add basic EEH selftest") Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200727010127.23698-1-oohall@gmail.com
2020-07-29selftests/powerpc: Add test for pkey siginfo verificationSandipan Das
Commit c46241a370a61 ("powerpc/pkeys: Check vma before returning key fault error to the user") fixes a bug which causes the kernel to set the wrong pkey in siginfo when a pkey fault occurs after two competing threads that have allocated different pkeys, one fully permissive and the other restrictive, attempt to protect a common page at the same time. This adds a test to detect the bug. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/ce40b6ee270bda52e8f4088578ed2faf7d1d509a.1595821792.git.sandipan@linux.ibm.com
2020-07-29selftests/powerpc: Add wrapper for gettidSandipan Das
The gettid() syscall wrapper was first introduced in glibc 2.30. This adds a wrapper for use in distros running older versions. Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> Suggested-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8ca3b0eeda989707815d1cf337cc33f090408965.1595821792.git.sandipan@linux.ibm.com
2020-07-29selftests/powerpc: Add helper to exit on failureSandipan Das
This adds a helper similar to FAIL_IF() which lets a program exit with code 1 (to indicate failure) when the given condition is true. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/dac282d5c2e96e7816dc522e4e20d56d7c79c898.1595821792.git.sandipan@linux.ibm.com
2020-07-29selftests/powerpc: Harden test for execute-disabled pkeysSandipan Das
Commit 192b6a7805989 ("powerpc/book3s64/pkeys: Fix pkey_access_permitted() for execute disable pkey") fixed a bug that caused repetitive faults for pkeys with no execute rights alongside some combination of read and write rights. This removes the last two cases of the test, which check the behaviour of pkeys with read, write but no execute rights and all the rights, in favour of checking all the possible combinations of read, write and execute rights to be able to detect bugs like the one mentioned above. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/db467500f8af47727bba6b35796e8974a78b71e5.1595821792.git.sandipan@linux.ibm.com
2020-07-29selftests/powerpc: Add pkey helpers for rightsSandipan Das
This adds some new pkey-related helper to print access rights of a pkey in the "rwx" format and to generate different valid combinations of pkey rights starting from a given combination. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/6cc1c7d1f686618668a3e090f1d0c2a4cd9dea3f.1595821792.git.sandipan@linux.ibm.com
2020-07-29selftests/powerpc: Move pkey helpers to headersSandipan Das
This moves all the pkey-related helpers to a new header file and also a helper to print error messages in signal handlers to the existing utils header file. Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/28e633fa9ec1a6500c12188e09ea1887b10a10c1.1595821792.git.sandipan@linux.ibm.com
2020-07-29bpf, selftests: use :: 1 for localhost in tcp_server.pyJohn Fastabend
Using localhost requires the host to have a /etc/hosts file with that specific line in it. By default my dev box did not, they used ip6-localhost, so the test was failing. To fix remove the need for any /etc/hosts and use ::1. I could just add the line, but this seems easier. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/159594714197.21431.10113693935099326445.stgit@john-Precision-5820-Tower
2020-07-28mm/hmm/test: use the new migration invalidationRalph Campbell
Use the new MMU_NOTIFY_MIGRATE event to skip MMU invalidations of device private memory and handle the invalidation in the driver as part of migrating device private memory. Link: https://lore.kernel.org/r/20200723223004.9586-6-rcampbell@nvidia.com Signed-off-by: Ralph Campbell <rcampbell@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-07-28selftests/bpf: Add new bpf_iter context structs to fix build on old kernelsAndrii Nakryiko
Add bpf_iter__bpf_map_elem and bpf_iter__bpf_sk_storage_map to bpf_iter.h. Fixes: 3b1c420bd882 ("selftests/bpf: Add a test for bpf sk_storage_map iterator") Fixes: 2a7c2fff7dd6 ("selftests/bpf: Add test for bpf hash map iterators") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200727233345.1686358-1-andriin@fb.com
2020-07-28selftests/seccomp: add xtensa supportMax Filippov
Xtensa syscall number can be obtained and changed through the struct user_pt_regs. Syscall return value register is fixed relatively to the current register window in the user_pt_regs, so it needs a bit of special treatment. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2020-07-27selftests/net: tcp_mmap: fix clang warning for target arch PowerPCTanner Love
When size_t maps to unsigned int (e.g. on 32-bit powerpc), then the comparison with 1<<35 is always true. Clang 9 threw: warning: result of comparison of constant 34359738368 with \ expression of type 'size_t' (aka 'unsigned int') is always true \ [-Wtautological-constant-out-of-range-compare] while (total < FILE_SZ) { Tested: make -C tools/testing/selftests TARGETS="net" run_tests Fixes: 192dc405f308 ("selftests: net: add tcp_mmap program") Signed-off-by: Tanner Love <tannerlove@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-27selftests/net: so_txtime: fix clang issues for target arch PowerPCTanner Love
On powerpcle, int64_t maps to long long. Clang 9 threw: warning: absolute value function 'labs' given an argument of type \ 'long long' but has parameter of type 'long' which may cause \ truncation of value [-Wabsolute-value] if (labs(tstop - texpect) > cfg_variance_us) Tested: make -C tools/testing/selftests TARGETS="net" run_tests Fixes: af5136f95045 ("selftests/net: SO_TXTIME with ETF and FQ") Signed-off-by: Tanner Love <tannerlove@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-27selftests/net: psock_fanout: fix clang issues for target arch PowerPCTanner Love
Clang 9 threw: warning: format specifies type 'unsigned short' but the argument has \ type 'int' [-Wformat] typeflags, PORT_BASE, PORT_BASE + port_off); Tested: make -C tools/testing/selftests TARGETS="net" run_tests Fixes: 77f65ebdca50 ("packet: packet fanout rollover during socket overload") Signed-off-by: Tanner Love <tannerlove@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-27selftests/net: rxtimestamp: fix clang issues for target arch PowerPCTanner Love
The signedness of char is implementation-dependent. Some systems (including PowerPC and ARM) use unsigned char. Clang 9 threw: warning: result of comparison of constant -1 with expression of type \ 'char' is always true [-Wtautological-constant-out-of-range-compare] &arg_index)) != -1) { Tested: make -C tools/testing/selftests TARGETS="net" run_tests Fixes: 16e781224198 ("selftests/net: Add a test to validate behavior of rx timestamps") Signed-off-by: Tanner Love <tannerlove@google.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-27KVM: nVMX: check for invalid hdr.vmx.flagsPaolo Bonzini
hdr.vmx.flags is meant for future extensions to the ABI, rejecting invalid flags is necessary to avoid broken half-loads of the nVMX state. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-27KVM: nVMX: check for required but missing VMCS12 in KVM_SET_NESTED_STATEPaolo Bonzini
A missing VMCS12 was not causing -EINVAL (it was just read with copy_from_user, so it is not a security issue, but it is still wrong). Test for VMCS12 validity and reject the nested state if a VMCS12 is required but not present. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-27selftests: kvm: do not set guest mode flagPaolo Bonzini
Setting KVM_STATE_NESTED_GUEST_MODE enables various consistency checks on VMCS12 and therefore causes KVM_SET_NESTED_STATE to fail spuriously with -EINVAL. Do not set the flag so that we're sure to cover the conditions included by the test, and cover the case where VMCS12 is set and KVM_SET_NESTED_STATE is called with invalid VMCS12 contents. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-07-27Merge 5.8-rc7 into driver-core-nextGreg Kroah-Hartman
We want the driver core fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-27Merge 5.8-rc7 into char-misc-nextGreg Kroah-Hartman
This should resolve the merge/build issues reported when trying to create linux-next. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-25selftests/bpf: Add BPF XDP link selftestsAndrii Nakryiko
Add selftest validating all the attachment logic around BPF XDP link. Test also link updates and get_obj_info() APIs. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200722064603.3350758-9-andriin@fb.com
2020-07-25libbpf: Add support for BPF XDP linkAndrii Nakryiko
Sync UAPI header and add support for using bpf_link-based XDP attachment. Make xdp/ prog type set expected attach type. Kernel didn't enforce attach_type for XDP programs before, so there is no backwards compatiblity issues there. Also fix section_names selftest to recognize that xdp prog types now have expected attach type. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200722064603.3350758-8-andriin@fb.com
2020-07-25selftests/bpf: Test CGROUP_STORAGE behavior on shared egress + ingressYiFei Zhu
This mirrors the original egress-only test. The cgroup_storage is now extended to have two packet counters, one for egress and one for ingress. We also extend to have two egress programs to test that egress will always share with other egress origrams in the same cgroup. The behavior of the counters are exactly the same as the original egress-only test. The test is split into two, one "isolated" test that when the key type is struct bpf_cgroup_storage_key, which contains the attach type, programs of different attach types will see different storages. The other, "shared" test that when the key type is u64, programs of different attach types will see the same storage if they are attached to the same cgroup. Signed-off-by: YiFei Zhu <zhuyifei@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/c756f5f1521227b8e6e90a453299dda722d7324d.1595565795.git.zhuyifei@google.com
2020-07-25selftests/bpf: Test CGROUP_STORAGE map can't be used by multiple progsYiFei Zhu
The current assumption is that the lifetime of a cgroup storage is tied to the program's attachment. The storage is created in cgroup_bpf_attach, and released upon cgroup_bpf_detach and cgroup_bpf_release. Because the current semantics is that each attachment gets a completely independent cgroup storage, and you can have multiple programs attached to the same (cgroup, attach type) pair, the key of the CGROUP_STORAGE map, looking up the map with this pair could yield multiple storages, and that is not permitted. Therefore, the kernel verifier checks that two programs cannot share the same CGROUP_STORAGE map, even if they have different expected attach types, considering that the actual attach type does not always have to be equal to the expected attach type. The test creates a CGROUP_STORAGE map and make it shared across two different programs, one cgroup_skb/egress and one /ingress. It asserts that the two programs cannot be both loaded, due to verifier failure from the above reason. Signed-off-by: YiFei Zhu <zhuyifei@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/30a6b0da67ae6b0296c4d511bfb19c5f3d035916.1595565795.git.zhuyifei@google.com
2020-07-25selftests/bpf: Add test for CGROUP_STORAGE map on multiple attachesYiFei Zhu
This test creates a parent cgroup, and a child of that cgroup. It attaches a cgroup_skb/egress program that simply counts packets, to a global variable (ARRAY map), and to a CGROUP_STORAGE map. The program is first attached to the parent cgroup only, then to parent and child. The test cases sends a message within the child cgroup, and because the program is inherited across parent / child cgroups, it will trigger the egress program for both the parent and child, if they exist. The program, when looking up a CGROUP_STORAGE map, uses the cgroup and attach type of the attachment parameters; therefore, both attaches uses different cgroup storages. We assert that all packet counts returns what we expects. Signed-off-by: YiFei Zhu <zhuyifei@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/5a20206afa4606144691c7caa0d1b997cd60dec0.1595565795.git.zhuyifei@google.com
2020-07-25selftests/bpf: Add get_stackid_cannot_attachSong Liu
This test confirms that BPF program that calls bpf_get_stackid() cannot attach to perf_event with precise_ip > 0 but not PERF_SAMPLE_CALLCHAIN; and cannot attach if the perf_event has exclude_callchain_kernel. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723180648.1429892-6-songliubraving@fb.com
2020-07-25selftests/bpf: Add callchain_stackidSong Liu
This tests new helper function bpf_get_stackid_pe and bpf_get_stack_pe. These two helpers have different implementation for perf_event with PEB entries. Signed-off-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200723180648.1429892-5-songliubraving@fb.com
2020-07-25selftests/bpf: Add a test for out of bound rdonly buf accessYonghong Song
If the bpf program contains out of bound access w.r.t. a particular map key/value size, the verification will be still okay, e.g., it will be accepted by verifier. But it will be rejected during link_create time. A test is added here to ensure link_create failure did happen if out of bound access happened. $ ./test_progs -n 4 ... #4/23 rdonly-buf-out-of-bound:OK ... Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184124.591700-1-yhs@fb.com
2020-07-25selftests/bpf: Add a test for bpf sk_storage_map iteratorYonghong Song
Added one test for bpf sk_storage_map_iterator. $ ./test_progs -n 4 ... #4/22 bpf_sk_storage_map:OK ... Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184122.591591-1-yhs@fb.com
2020-07-25selftests/bpf: Add test for bpf array map iteratorsYonghong Song
Two subtests are added. $ ./test_progs -n 4 ... #4/20 bpf_array_map:OK #4/21 bpf_percpu_array_map:OK ... The bpf_array_map subtest also tested bpf program changing array element values and send key/value to user space through bpf_seq_write() interface. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184121.591367-1-yhs@fb.com
2020-07-25selftests/bpf: Add test for bpf hash map iteratorsYonghong Song
Two subtests are added. $ ./test_progs -n 4 ... #4/18 bpf_hash_map:OK #4/19 bpf_percpu_hash_map:OK ... Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200723184120.590916-1-yhs@fb.com
2020-07-25selftests/bpf: Test BPF socket lookup and reuseport with connectionsJakub Sitnicki
Cover the case when BPF socket lookup returns a socket that belongs to a reuseport group, and the reuseport group contains connected UDP sockets. Ensure that the presence of connected UDP sockets in reuseport group does not affect the socket lookup result. Socket selected by reuseport should always be used as result in such case. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp> Link: https://lore.kernel.org/bpf/20200722161720.940831-3-jakub@cloudflare.com
generated by cgit (git 2.34.1) at 2025-09-27 00:33:24 +0000