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2020-12-03libbpf: Factor out low-level BPF program loading helperAndrii Nakryiko
Refactor low-level API for BPF program loading to not rely on public API types. This allows painless extension without constant efforts to cleverly not break backwards compatibility. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-12-andrii@kernel.org
2020-12-03bpf: Allow to specify kernel module BTFs when attaching BPF programsAndrii Nakryiko
Add ability for user-space programs to specify non-vmlinux BTF when attaching BTF-powered BPF programs: raw_tp, fentry/fexit/fmod_ret, LSM, etc. For this, attach_prog_fd (now with the alias name attach_btf_obj_fd) should specify FD of a module or vmlinux BTF object. For backwards compatibility reasons, 0 denotes vmlinux BTF. Only kernel BTF (vmlinux or module) can be specified. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-11-andrii@kernel.org
2020-12-03selftests/bpf: Add CO-RE relocs selftest relying on kernel module BTFAndrii Nakryiko
Add a self-tests validating libbpf is able to perform CO-RE relocations against the type defined in kernel module BTF. if bpf_testmod.o is not supported by the kernel (e.g., due to version mismatch), skip tests, instead of failing. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-9-andrii@kernel.org
2020-12-03selftests/bpf: Add support for marking sub-tests as skippedAndrii Nakryiko
Previously skipped sub-tests would be counted as passing with ":OK" appened in the log. Change that to be accounted as ":SKIP". Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-8-andrii@kernel.org
2020-12-03selftests/bpf: Add bpf_testmod kernel module for testingAndrii Nakryiko
Add bpf_testmod module, which is conceptually out-of-tree module and provides ways for selftests/bpf to test various kernel module-related functionality: raw tracepoint, fentry/fexit/fmod_ret, etc. This module will be auto-loaded by test_progs test runner and expected by some of selftests to be present and loaded. Pahole currently isn't able to generate BTF for static functions in kernel modules, so make sure traced function is global. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20201203204634.1325171-7-andrii@kernel.org
2020-12-03libbpf: Add kernel module BTF support for CO-RE relocationsAndrii Nakryiko
Teach libbpf to search for candidate types for CO-RE relocations across kernel modules BTFs, in addition to vmlinux BTF. If at least one candidate type is found in vmlinux BTF, kernel module BTFs are not iterated. If vmlinux BTF has no matching candidates, then find all kernel module BTFs and search for all matching candidates across all of them. Kernel's support for module BTFs are inferred from the support for BTF name pointer in BPF UAPI. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-6-andrii@kernel.org
2020-12-03libbpf: Refactor CO-RE relocs to not assume a single BTF objectAndrii Nakryiko
Refactor CO-RE relocation candidate search to not expect a single BTF, rather return all candidate types with their corresponding BTF objects. This will allow to extend CO-RE relocations to accommodate kernel module BTFs. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20201203204634.1325171-5-andrii@kernel.org
2020-12-03libbpf: Add internal helper to load BTF data by FDAndrii Nakryiko
Add a btf_get_from_fd() helper, which constructs struct btf from in-kernel BTF data by FD. This is used for loading module BTFs. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-4-andrii@kernel.org
2020-12-03selftests/bpf: Add Userspace tests for TCP_WINDOW_CLAMPPrankur gupta
Adding selftests for new added functionality to set TCP_WINDOW_CLAMP from bpf setsockopt. Signed-off-by: Prankur gupta <prankgup@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201202213152.435886-3-prankgup@fb.com
2020-12-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Conflicts: drivers/net/ethernet/ibm/ibmvnic.c Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-03Merge tag 'net-5.10-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Networking fixes for 5.10-rc7, including fixes from bpf, netfilter, wireless drivers, wireless mesh and can. Current release - regressions: - mt76: usb: fix crash on device removal Current release - always broken: - xsk: Fix umem cleanup from wrong context in socket destruct Previous release - regressions: - net: ip6_gre: set dev->hard_header_len when using header_ops - ipv4: Fix TOS mask in inet_rtm_getroute() - net, xsk: Avoid taking multiple skbuff references Previous release - always broken: - net/x25: prevent a couple of overflows - netfilter: ipset: prevent uninit-value in hash_ip6_add - geneve: pull IP header before ECN decapsulation - mpls: ensure LSE is pullable in TC and openvswitch paths - vxlan: respect needed_headroom of lower device - batman-adv: Consider fragmentation for needed packet headroom - can: drivers: don't count arbitration loss as an error - netfilter: bridge: reset skb->pkt_type after POST_ROUTING traversal - inet_ecn: Fix endianness of checksum update when setting ECT(1) - ibmvnic: fix various corner cases around reset handling - net/mlx5: fix rejecting unsupported Connect-X6DX SW steering - net/mlx5: Enforce HW TX csum offload with kTLS" * tag 'net-5.10-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (62 commits) net/mlx5: DR, Proper handling of unsupported Connect-X6DX SW steering net/mlx5e: kTLS, Enforce HW TX csum offload with kTLS net: mlx5e: fix fs_tcp.c build when IPV6 is not enabled net/mlx5: Fix wrong address reclaim when command interface is down net/sched: act_mpls: ensure LSE is pullable before reading it net: openvswitch: ensure LSE is pullable before reading it net: skbuff: ensure LSE is pullable before decrementing the MPLS ttl net: mvpp2: Fix error return code in mvpp2_open() chelsio/chtls: fix a double free in chtls_setkey() rtw88: debug: Fix uninitialized memory in debugfs code vxlan: fix error return code in __vxlan_dev_create() net: pasemi: fix error return code in pasemi_mac_open() cxgb3: fix error return code in t3_sge_alloc_qset() net/x25: prevent a couple of overflows dpaa_eth: copy timestamp fields to new skb in A-050385 workaround net: ip6_gre: set dev->hard_header_len when using header_ops mt76: usb: fix crash on device removal iwlwifi: pcie: add some missing entries for AX210 iwlwifi: pcie: invert values of NO_160 device config entries iwlwifi: pcie: add one missing entry for AX210 ...
2020-12-03bpf: Fix cold build of test_progs-no_alu32Brendan Jackman
This object lives inside the trunner output dir, i.e. tools/testing/selftests/bpf/no_alu32/btf_data.o At some point it gets copied into the parent directory during another part of the build, but that doesn't happen when building test_progs-no_alu32 from clean. Signed-off-by: Brendan Jackman <jackmanb@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/bpf/20201203120850.859170-1-jackmanb@google.com
2020-12-03libbpf: Cap retries in sys_bpf_prog_loadStanislav Fomichev
I've seen a situation, where a process that's under pprof constantly generates SIGPROF which prevents program loading indefinitely. The right thing to do probably is to disable signals in the upper layers while loading, but it still would be nice to get some error from libbpf instead of an endless loop. Let's add some small retry limit to the program loading: try loading the program 5 (arbitrary) times and give up. v2: * 10 -> 5 retires (Andrii Nakryiko) Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201202231332.3923644-1-sdf@google.com
2020-12-03libbpf: Sanitise map names before pinningToke Høiland-Jørgensen
When we added sanitising of map names before loading programs to libbpf, we still allowed periods in the name. While the kernel will accept these for the map names themselves, they are not allowed in file names when pinning maps. This means that bpf_object__pin_maps() will fail if called on an object that contains internal maps (such as sections .rodata). Fix this by replacing periods with underscores when constructing map pin paths. This only affects the paths generated by libbpf when bpf_object__pin_maps() is called with a path argument. Any pin paths set by bpf_map__set_pin_path() are unaffected, and it will still be up to the caller to avoid invalid characters in those. Fixes: 113e6b7e15e2 ("libbpf: Sanitise internal map names so they are not rejected by the kernel") Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201203093306.107676-1-toke@redhat.com
2020-12-03libbpf: Fail early when loading programs with unspecified typeAndrei Matei
Before this patch, a program with unspecified type (BPF_PROG_TYPE_UNSPEC) would be passed to the BPF syscall, only to have the kernel reject it with an opaque invalid argument error. This patch makes libbpf reject such programs with a nicer error message - in particular libbpf now tries to diagnose bad ELF section names at both open time and load time. Signed-off-by: Andrei Matei <andreimatei1@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201203043410.59699-1-andreimatei1@gmail.com
2020-12-03selftests/bpf: Indent ima_setup.sh with tabs.KP Singh
The file was formatted with spaces instead of tabs and went unnoticed as checkpatch.pl did not complain (probably because this is a shell script). Re-indent it with tabs to be consistent with other scripts. Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201203191437.666737-5-kpsingh@chromium.org
2020-12-03selftests/bpf: Add config dependency on BLK_DEV_LOOPKP Singh
The ima selftest restricts its scope to a test filesystem image mounted on a loop device and prevents permanent ima policy changes for the whole system. Fixes: 34b82d3ac105 ("bpf: Add a selftest for bpf_ima_inode_hash") Reported-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201203191437.666737-4-kpsingh@chromium.org
2020-12-03selftests/bpf: Ensure securityfs mount before writing ima policyKP Singh
SecurityFS may not be mounted even if it is enabled in the kernel config. So, check if the mount exists in /proc/mounts by parsing the file and, if not, mount it on /sys/kernel/security. Fixes: 34b82d3ac105 ("bpf: Add a selftest for bpf_ima_inode_hash") Reported-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201203191437.666737-3-kpsingh@chromium.org
2020-12-03selftests/bpf: Update ima_setup.sh for busyboxKP Singh
losetup on busybox does not output the name of loop device on using -f with --show. It also doesn't support -j to find the loop devices for a given backing file. losetup is updated to use "-a" which is available on busybox. blkid does not support options (-s and -o) to only display the uuid, so parse the output instead. Not all environments have mkfs.ext4, the test requires a loop device with a backing image file which could formatted with any filesystem. Update to using mkfs.ext2 which is available on busybox. Fixes: 34b82d3ac105 ("bpf: Add a selftest for bpf_ima_inode_hash") Reported-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201203191437.666737-2-kpsingh@chromium.org
2020-12-03libbpf: Separate XDP program load with xsk socket creationMariusz Dudek
Add support for separation of eBPF program load and xsk socket creation. This is needed for use-case when you want to privide as little privileges as possible to the data plane application that will handle xsk socket creation and incoming traffic. With this patch the data entity container can be run with only CAP_NET_RAW capability to fulfill its purpose of creating xsk socket and handling packages. In case your umem is larger or equal process limit for MEMLOCK you need either increase the limit or CAP_IPC_LOCK capability. To resolve privileges issue two APIs are introduced: - xsk_setup_xdp_prog - loads the built in XDP program. It can also return xsks_map_fd which is needed by unprivileged process to update xsks_map with AF_XDP socket "fd" - xsk_socket__update_xskmap - inserts an AF_XDP socket into an xskmap for a particular xsk_socket Signed-off-by: Mariusz Dudek <mariuszx.dudek@intel.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://lore.kernel.org/bpf/20201203090546.11976-2-mariuszx.dudek@intel.com
2020-12-03tools/resolve_btfids: Fix some error messagesBrendan Jackman
Add missing newlines and fix polarity of strerror argument. Signed-off-by: Brendan Jackman <jackmanb@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/bpf/20201203102234.648540-1-jackmanb@google.com
2020-12-03selftests/bpf: Copy file using read/write in local storage testStanislav Fomichev
Splice (copy_file_range) doesn't work on all filesystems. I'm running test kernels on top of my read-only disk image and it uses plan9 under the hood. This prevents test_local_storage from successfully passing. There is really no technical reason to use splice, so lets do old-school read/write to copy file; this should work in all environments. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201202174947.3621989-1-sdf@google.com
2020-12-03tools/bpftool: Auto-detect split BTFs in common casesAndrii Nakryiko
In case of working with module's split BTF from /sys/kernel/btf/*, auto-substitute /sys/kernel/btf/vmlinux as the base BTF. This makes using bpftool with module BTFs faster and simpler. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201202065244.530571-4-andrii@kernel.org
2020-12-03libbpf: Add base BTF accessorAndrii Nakryiko
Add ability to get base BTF. It can be also used to check if BTF is split BTF. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201202065244.530571-3-andrii@kernel.org
2020-12-03tools/bpftool: Emit name <anon> for anonymous BTFsAndrii Nakryiko
For consistency of output, emit "name <anon>" for BTFs without the name. This keeps output more consistent and obvious. Suggested-by: Song Liu <songliubraving@fb.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201202065244.530571-2-andrii@kernel.org
2020-12-03selftests: kvm/set_memory_region_test: Fix race in move region testMaciej S. Szmigiero
The current memory region move test correctly handles the situation that the second (realigning) memslot move operation would temporarily trigger MMIO until it completes, however it does not handle the case in which the first (misaligning) move operation does this, too. This results in false test assertions in case it does so. Fix this by handling temporary MMIO from the first memslot move operation in the test guest code, too. Fixes: 8a0639fe9201 ("KVM: sefltests: Add explicit synchronization to move mem region test") Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com> Message-Id: <0fdddb94bb0e31b7da129a809a308d91c10c0b5e.1606941224.git.maciej.szmigiero@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-12-03macvlan: Support for high multicast packet rateThomas Karlsson
Background: Broadcast and multicast packages are enqueued for later processing. This queue was previously hardcoded to 1000. This proved insufficient for handling very high packet rates. This resulted in packet drops for multicast. While at the same time unicast worked fine. The change: This patch make the queue length adjustable to accommodate for environments with very high multicast packet rate. But still keeps the default value of 1000 unless specified. The queue length is specified as a request per macvlan using the IFLA_MACVLAN_BC_QUEUE_LEN parameter. The actual used queue length will then be the maximum of any macvlan connected to the same port. The actual used queue length for the port can be retrieved (read only) by the IFLA_MACVLAN_BC_QUEUE_LEN_USED parameter for verification. This will be followed up by a patch to iproute2 in order to adjust the parameter from userspace. Signed-off-by: Thomas Karlsson <thomas.karlsson@paneda.se> Link: https://lore.kernel.org/r/dd4673b2-7eab-edda-6815-85c67ce87f63@paneda.se Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-04lkdtm/powerpc: Add SLB multihit testGanesh Goudar
To check machine check handling, add support to inject slb multihit errors. Co-developed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com> Signed-off-by: Mahesh Salgaonkar <mahesh@linux.ibm.com> Signed-off-by: Ganesh Goudar <ganeshgr@linux.ibm.com> [mpe: Use CONFIG_PPC_BOOK3S_64 to fix compile errors reported by lkp@intel.com] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201130083057.135610-1-ganeshgr@linux.ibm.com
2020-12-04selftests/powerpc: Fix uninitialized variable warningHarish
Patch fixes uninitialized variable warning in bad_accesses test which causes the selftests build to fail in older distibutions bad_accesses.c: In function ‘bad_access’: bad_accesses.c:52:9: error: ‘x’ may be used uninitialized in this function [-Werror=maybe-uninitialized] printf("Bad - no SEGV! (%c)\n", x); ^ cc1: all warnings being treated as errors Signed-off-by: Harish <harish@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201201092403.238182-1-harish@linux.ibm.com
2020-12-04selftests/powerpc: update .gitignoreDaniel Axtens
I did an in-place build of the self-tests and found that it left the tree dirty. Add missed test binaries to .gitignore Signed-off-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20201201144427.1228745-1-dja@axtens.net
2020-12-03selftests: openat2: add RESOLVE_ conflict testAleksa Sarai
Now that we reject conflicting RESOLVE_ flags, add a selftest to avoid regressions. Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> Link: https://lore.kernel.org/r/20201027235044.5240-3-cyphar@cyphar.com Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
2020-12-02bpf: Eliminate rlimit-based memory accounting infra for bpf mapsRoman Gushchin
Remove rlimit-based accounting infrastructure code, which is not used anymore. To provide a backward compatibility, use an approximation of the bpf map memory footprint as a "memlock" value, available to a user via map info. The approximation is based on the maximal number of elements and key and value sizes. Signed-off-by: Roman Gushchin <guro@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20201201215900.3569844-33-guro@fb.com
2020-12-02selftests/bpf: Extend bind{4,6} programs with a call to bpf_setsockoptStanislav Fomichev
To make sure it doesn't trigger sock_owned_by_me splat. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201202172516.3483656-4-sdf@google.com
2020-12-02selftests/bpf: Rewrite test_sock_addr bind bpf into CStanislav Fomichev
I'm planning to extend it in the next patches. It's much easier to work with C than BPF assembly. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20201202172516.3483656-2-sdf@google.com
2020-12-02Merge tag 'trace-v5.10-rc6-bootconfig' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull bootconfig fixes from Steven Rostedt: "Have bootconfig size and checksum be little endian In case the bootconfig is created on one kind of endian machine, and then read on the other kind of endian kernel, the size and checksum will be incorrect. Instead, have both the size and checksum always be little endian and have the tool and the kernel convert it from little endian to or from the host endian" * tag 'trace-v5.10-rc6-bootconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: docs: bootconfig: Add the endianness of fields tools/bootconfig: Store size and checksum in footer as le32 bootconfig: Load size and checksum in the footer as le32
2020-12-02selftests/seccomp: Update kernel configMickaël Salaün
seccomp_bpf.c uses unshare(CLONE_NEWPID), which requires CONFIG_PID_NS to be set. Cc: Kees Cook <keescook@chromium.org> Cc: Shuah Khan <shuah@kernel.org> Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace") Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com> Acked-by: Tycho Andersen <tycho@tycho.pizza> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20201202162643.249276-1-mic@digikod.net
2020-12-02selftests: Add benchmark for syscall user dispatchGabriel Krisman Bertazi
This is the patch I'm using to evaluate the impact syscall user dispatch has on native syscall (syscalls not redirected to userspace) when enabled for the process and submiting syscalls though the unblocked dispatch selector. It works by running a step to define a baseline of the cost of executing sysinfo, then enabling SUD, and rerunning that step. On my test machine, an AMD Ryzen 5 1500X, I have the following results with the latest version of syscall user dispatch patches. root@olga:~# syscall_user_dispatch/sud_benchmark Calibrating test set to last ~5 seconds... test iterations = 37500000 Avg syscall time 134ns. Caught sys_ff00 trapped_call_count 1, native_call_count 0. Avg syscall time 147ns. Interception overhead: 9.7% (+13ns). Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Andy Lutomirski <luto@kernel.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20201127193238.821364-7-krisman@collabora.com
2020-12-02selftests: Add kselftest for syscall user dispatchGabriel Krisman Bertazi
Implement functionality tests for syscall user dispatch. In order to make the test portable, refrain from open coding syscall dispatchers and calculating glibc memory ranges. Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andy Lutomirski <luto@kernel.org> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20201127193238.821364-6-krisman@collabora.com
2020-12-01selftests/bpf: Drain ringbuf samples at the end of testAndrii Nakryiko
Avoid occasional test failures due to the last sample being delayed to another ring_buffer__poll() call. Instead, drain samples completely with ring_buffer__consume(). This is supposed to fix a rare and non-deterministic test failure in libbpf CI. Fixes: cb1c9ddd5525 ("selftests/bpf: Add BPF ringbuf selftests") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201130223336.904192-2-andrii@kernel.org
2020-12-01libbpf: Fix ring_buffer__poll() to return number of consumed samplesAndrii Nakryiko
Fix ring_buffer__poll() to return the number of non-discarded records consumed, just like its documentation states. It's also consistent with ring_buffer__consume() return. Fix up selftests with wrong expected results. Fixes: bf99c936f947 ("libbpf: Add BPF ring buffer support") Fixes: cb1c9ddd5525 ("selftests/bpf: Add BPF ringbuf selftests") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201130223336.904192-1-andrii@kernel.org
2020-12-01Merge tag 'v5.10-rc6' into rdma.git for-nextJason Gunthorpe
For dependencies in following patches Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-12-01Merge tag 'trace-v5.10-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: - Use correct timestamp variable for ring buffer write stamp update - Fix up before stamp and write stamp when crossing ring buffer sub buffers - Keep a zero delta in ring buffer in slow path if cmpxchg fails - Fix trace_printk static buffer for archs that care - Fix ftrace record accounting for ftrace ops with trampolines - Fix DYNAMIC_FTRACE_WITH_DIRECT_CALLS dependency - Remove WARN_ON in hwlat tracer that triggers on something that is OK - Make "my_tramp" trampoline in ftrace direct sample code global - Fixes in the bootconfig tool for better alignment management * tag 'trace-v5.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ring-buffer: Always check to put back before stamp when crossing pages ftrace: Fix DYNAMIC_FTRACE_WITH_DIRECT_CALLS dependency ftrace: Fix updating FTRACE_FL_TRAMP tracing: Fix alignment of static buffer tracing: Remove WARN_ON in start_thread() samples/ftrace: Mark my_tramp[12]? global ring-buffer: Set the right timestamp in the slow path of __rb_reserve_next() ring-buffer: Update write stamp with the correct ts docs: bootconfig: Update file format on initrd image tools/bootconfig: Align the bootconfig applied initrd image size to 4 tools/bootconfig: Fix to check the write failure correctly tools/bootconfig: Fix errno reference after printf()
2020-12-01selftests: forwarding: Add QinQ veto testingDanielle Ratson
Test that each veto that was added in the previous patch, is indeed vetoed. $ ./q_in_q_veto.sh TEST: create 802.1ad vlan upper on top of a front panel [ OK ] TEST: create 802.1ad vlan upper on top of a bridge port [ OK ] TEST: create 802.1ad vlan upper on top of a lag [ OK ] TEST: create 802.1ad vlan upper on top 802.1q bridge [ OK ] TEST: create 802.1ad vlan upper on top 802.1ad bridge [ OK ] TEST: create 802.1q vlan upper on top 802.1ad bridge [ OK ] TEST: create vlan upper on top of front panel enslaved to 802.1ad bridge [ OK ] TEST: create vlan upper on top of lag enslaved to 802.1ad bridge [ OK ] TEST: enslave front panel with vlan upper to 802.1ad bridge [ OK ] TEST: enslave lag with vlan upper to 802.1ad bridge [ OK ] TEST: IP address addition to 802.1ad bridge [ OK ] TEST: switch bridge protocol [ OK ] Signed-off-by: Danielle Ratson <danieller@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-01kunit: kunit_tool: Correctly parse diagnostic messagesDavid Gow
Currently, kunit_tool expects all diagnostic lines in test results to contain ": " somewhere, as both the subtest header and the crash report do. Fix this to accept any line starting with (minus indent) "# " as being a valid diagnostic line. This matches what the TAP spec[1] and the draft KTAP spec[2] are expecting. [1]: http://testanything.org/tap-specification.html [2]: https://lore.kernel.org/linux-kselftest/CY4PR13MB1175B804E31E502221BC8163FD830@CY4PR13MB1175.namprd13.prod.outlook.com/T/ Signed-off-by: David Gow <davidgow@google.com> Acked-by: Marco Elver <elver@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-12-01Merge tag 'linux-cpupower-5.11-rc1' of ↵Rafael J. Wysocki
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux Pull cpupower utility update for v5.11-rc1 from Shuah Khan: "This consists of a change to provide online and offline CPU information. This change makes it easier to keep track of offline cpus whose cpuidle or cpufreq property aren't changed when updates are made to online cpus." * tag 'linux-cpupower-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux: cpupower: Provide online and offline CPU information
2020-11-30tools/bootconfig: Store size and checksum in footer as le32Masami Hiramatsu
Store the size and the checksum fields in the footer as le32 instead of u32. This will allow us to apply bootconfig to the cross build initrd without caring the endianness. Link: https://lkml.kernel.org/r/160583935332.547349.5897811300636587426.stgit@devnote2 Reported-by: Steven Rostedt <rostedt@goodmis.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-11-30selftests/bpf: Fix flavored variants of test_imaKP Singh
Flavored variants of test_progs (e.g. test_progs-no_alu32) change their working directory to the corresponding subdirectory (e.g. no_alu32). Since the setup script required by test_ima (ima_setup.sh) is not mentioned in the dependencies, it does not get copied to these subdirectories and causes flavored variants of test_ima to fail. Adding the script to TRUNNER_EXTRA_FILES ensures that the file is also copied to the subdirectories for the flavored variants of test_progs. Fixes: 34b82d3ac105 ("bpf: Add a selftest for bpf_ima_inode_hash") Reported-by: Yonghong Song <yhs@fb.com> Suggested-by: Yonghong Song <yhs@fb.com> Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20201126184946.1708213-1-kpsingh@chromium.org
2020-11-30ktest.pl: Fix the logic for truncating the size of the log file for emailSteven Rostedt (VMware)
The logic for truncating the log file for emailing based on the MAIL_MAX_SIZE option is confusing and incorrect. Simplify it and have the tail of the log file truncated to the max size specified in the config. Cc: stable@vger.kernel.org Fixes: 855d8abd2e8ff ("ktest.pl: Change the logic to control the size of the log file emailed") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-11-30ktest.pl: If size of log is too big to email, email error messageSteven Rostedt (VMware)
If the size of the error log is too big to send via email, and the sending fails, it wont email any result. This can be confusing for the user who is waiting for an email on the completion of the tests. If it fails to send email, then try again without the log file stating that it failed to send an email. Obviously this will not be of use if the sending of email failed for some other reasons, but it will at least give the user some information when it fails for the most common reason. Cc: stable@vger.kernel.org Fixes: c2d84ddb338c8 ("ktest.pl: Add MAIL_COMMAND option to define how to send email") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-11-30ktest.pl: Fix incorrect reboot for grub2blsLibo Chen
This issue was first noticed when I was testing different kernels on Oracle Linux 8 which as Fedora 30+ adopts BLS as default. Even though a kernel entry was added successfully and the index of that kernel entry was retrieved correctly, ktest still wouldn't reboot the system into user-specified kernel. The bug was spotted in subroutine reboot_to where the if-statement never checks for REBOOT_TYPE "grub2bls", therefore the desired entry will not be set for the next boot. Add a check for "grub2bls" so that $grub_reboot $grub_number can be run before a reboot if REBOOT_TYPE is "grub2bls" then we can boot to the correct kernel. Link: https://lkml.kernel.org/r/20201121021243.1532477-1-libo.chen@oracle.com Cc: stable@vger.kernel.org Fixes: ac2466456eaa ("ktest: introduce grub2bls REBOOT_TYPE option") Signed-off-by: Libo Chen <libo.chen@oracle.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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