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2022-09-20selftests: forwarding: Add test cases for unresolved multicast routesIdo Schimmel
Add IPv4 and IPv6 test cases for unresolved multicast routes, testing that queued packets are forwarded after installing a matching (S, G) route. The test cases can be used to reproduce the bugs fixed in "ipmr: Always call ip{,6}_mr_forward() from RCU read-side critical section". Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-20selftests: seg6: add selftest for NEXT-C-SID flavor in SRv6 End behaviorAndrea Mayer
This selftest is designed for testing the support of NEXT-C-SID flavor for SRv6 End behavior. It instantiates a virtual network composed of several nodes: hosts and SRv6 routers. Each node is realized using a network namespace that is properly interconnected to others through veth pairs. The test considers SRv6 routers implementing IPv4/IPv6 L3 VPNs leveraged by hosts for communicating with each other. Such routers i) apply different SRv6 Policies to the traffic received from connected hosts, considering the IPv4 or IPv6 protocols; ii) use the NEXT-C-SID compression mechanism for encoding several SRv6 segments within a single 128-bit SID address, referred to as a Compressed SID (C-SID) container. The NEXT-C-SID is provided as a "flavor" of the SRv6 End behavior, enabling it to properly process the C-SID containers. The correct execution of the enabled NEXT-C-SID SRv6 End behavior is verified through reachability tests carried out between hosts belonging to the same VPN. Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> Acked-by: David Ahern <dsahern@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-19selftests: mlxsw: Remove qos_burst testAmit Cohen
The previous patch added a test which can be used instead of qos_burst.sh. Remove this test. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-19selftests: mlxsw: Add QOS test for maximum use of descriptorsAmit Cohen
Add an equivalent test to qos_burst, the test's purpose is same, but the new test uses simpler topology and does not require forcing low speed. In addition, it can be run Spectrum-2 and not only Spectrum-3+. The idea is to use a shaper in order to limit the traffic and create congestion. qos_burst test uses small pool, sends many small packets, and verify that packets are not dropped, which means that many descriptors can be handled. This test should check the change that commit c864769add96 ("mlxsw: Configure descriptor buffers") pushed. Instead, the new test tries to use more than 85% of maximum supported descriptors. The idea is to use big pool (as much as the ASIC supports), such that the pool size does not limit the traffic, then send many small packets, which means that many descriptors are used, and check how many packets the switch can handle. The usage of shaper allows to run the test in all ASICs, regardless of the CPU abilities, as it is able to create the congestion with low rate of packets. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-19selftests: devlink_lib: Add function for querying maximum pool sizeAmit Cohen
The maximum pool size is exposed via 'devlink sb' command. The next patch will add a test which increases some pools to the maximum size. Add a function to query the value. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-19selftests: mlxsw: Use shapers in QOS RED tests instead of forcing speedAmit Cohen
QOS tests create congestion and verify the switch behavior. To create congestion, they need to have more traffic than the port can handle, so some of them force 1Gbps speed. The tests assume that 1Gbps speed is supported, otherwise, they will fail. Spectrum-4 ASIC will not support this speed in all ports, so to be able to run the tests there, some adjustments are required. Use shapers to limit the traffic instead of forcing speed. Note that for several ports, the speed configuration is just for autoneg issues, so shaper is not needed instead. The tests already use ETS qdisc as a root and RED qdiscs as children. Add a new TBF shaper to limit the rate of traffic, and use it as a root qdisc, then save the previous hierarchy of qdiscs under the new TBF root. In some ASICs, the shapers do not limit the traffic as accurately as forcing speed. To make the tests stable, allow the backlog size to be up to +-10% of the threshold. The aim of the tests is to make sure that with backlog << threshold, there are no drops, and that packets are dropped somewhere in vicinity of the configured threshold. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-19selftests: mlxsw: Use shapers in QOS tests instead of forcing speedAmit Cohen
QOS tests create congestion and verify the switch behavior. To create congestion, they need to have more traffic than the port can handle, so some of them force 1Gbps speed. The tests assume that 1Gbps speed is supported, otherwise, they will fail. Spectrum-4 ASIC will not support this speed in all ports, so to be able to run QOS tests there, some adjustments are required. Use shapers to limit the traffic instead of forcing speed. Note that for several ports, the speed configuration is just for autoneg issues, so shaper is not needed instead. In tests that already use shapers, set the existing shaper to be a child of a new TBF shaper which is added as a root qdisc and acts as a port shaper. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-19selftests/bpf: Add test result messages for test_task_storage_map_stress_lookupHou Tao
Add test result message when test_task_storage_map_stress_lookup() succeeds or is skipped. The test case can be skipped due to the choose of preemption model in kernel config, so export skips in test_maps.c and increase it when needed. The following is the output of test_maps when the test case succeeds or is skipped: test_task_storage_map_stress_lookup:PASS test_maps: OK, 0 SKIPPED test_task_storage_map_stress_lookup SKIP (no CONFIG_PREEMPT) test_maps: OK, 1 SKIPPED Fixes: 73b97bc78b32 ("selftests/bpf: Test concurrent updates on bpf_task_storage_busy") Signed-off-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/r/20220919035714.2195144-1-houtao@huaweicloud.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2022-09-18Merge tag 'parisc-for-6.0-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc architecture fixes from Helge Deller: "Some small parisc architecture fixes for 6.0-rc6: One patch lightens up a previous commit and thus unbreaks building the debian kernel, which tries to configure a 64-bit kernel with the ARCH=parisc environment variable set. The other patches fixes asm/errno.h includes in the tools directory and cleans up memory allocation in the iosapic driver. Summary: - Allow configuring 64-bit kernel with ARCH=parisc - Fix asm/errno.h includes in tools directory for parisc and xtensa - Clean up iosapic memory allocation - Minor typo and spelling fixes" * tag 'parisc-for-6.0-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Allow CONFIG_64BIT with ARCH=parisc parisc: remove obsolete manual allocation aligning in iosapic tools/include/uapi: Fix <asm/errno.h> for parisc and xtensa Input: hp_sdc: fix spelling typo in comment parisc: ccio-dma: Add missing iounmap in error path in ccio_probe()
2022-09-16libbpf: Clean up legacy bpf maps declaration in bpf_helpersXin Liu
Legacy BPF map declarations are no longer supported in libbpf v1.0 [0]. Only BTF-defined maps are supported starting from v1.0, so it is time to remove the definition of bpf_map_def in bpf_helpers.h. [0] https://github.com/libbpf/libbpf/wiki/Libbpf:-the-road-to-v1.0 Signed-off-by: Xin Liu <liuxin350@huawei.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/bpf/20220913073643.19960-1-liuxin350@huawei.com
2022-09-16selftests/bpf: Add veristat tool for mass-verifying BPF object filesAndrii Nakryiko
Add a small tool, veristat, that allows mass-verification of a set of *libbpf-compatible* BPF ELF object files. For each such object file, veristat will attempt to verify each BPF program *individually*. Regardless of success or failure, it parses BPF verifier stats and outputs them in human-readable table format. In the future we can also add CSV and JSON output for more scriptable post-processing, if necessary. veristat allows to specify a set of stats that should be output and ordering between multiple objects and files (e.g., so that one can easily order by total instructions processed, instead of default file name, prog name, verdict, total instructions order). This tool should be useful for validating various BPF verifier changes or even validating different kernel versions for regressions. Here's an example for some of the heaviest selftests/bpf BPF object files: $ sudo ./veristat -s insns,file,prog {pyperf,loop,test_verif_scale,strobemeta,test_cls_redirect,profiler}*.linked3.o File Program Verdict Duration, us Total insns Total states Peak states ------------------------------------ ------------------------------------ ------- ------------ ----------- ------------ ----------- loop3.linked3.o while_true failure 350990 1000001 9663 9663 test_verif_scale3.linked3.o balancer_ingress success 115244 845499 8636 2141 test_verif_scale2.linked3.o balancer_ingress success 77688 773445 3048 788 pyperf600.linked3.o on_event success 2079872 624585 30335 30241 pyperf600_nounroll.linked3.o on_event success 353972 568128 37101 2115 strobemeta.linked3.o on_event success 455230 557149 15915 13537 test_verif_scale1.linked3.o balancer_ingress success 89880 554754 8636 2141 strobemeta_nounroll2.linked3.o on_event success 433906 501725 17087 1912 loop6.linked3.o trace_virtqueue_add_sgs success 282205 398057 8717 919 loop1.linked3.o nested_loops success 125630 361349 5504 5504 pyperf180.linked3.o on_event success 2511740 160398 11470 11446 pyperf100.linked3.o on_event success 744329 87681 6213 6191 test_cls_redirect.linked3.o cls_redirect success 54087 78925 4782 903 strobemeta_subprogs.linked3.o on_event success 57898 65420 1954 403 test_cls_redirect_subprogs.linked3.o cls_redirect success 54522 64965 4619 958 strobemeta_nounroll1.linked3.o on_event success 43313 57240 1757 382 pyperf50.linked3.o on_event success 194355 46378 3263 3241 profiler2.linked3.o tracepoint__syscalls__sys_enter_kill success 23869 43372 1423 542 pyperf_subprogs.linked3.o on_event success 29179 36358 2499 2499 profiler1.linked3.o tracepoint__syscalls__sys_enter_kill success 13052 27036 1946 936 profiler3.linked3.o tracepoint__syscalls__sys_enter_kill success 21023 26016 2186 915 profiler2.linked3.o kprobe__vfs_link success 5255 13896 303 271 profiler1.linked3.o kprobe__vfs_link success 7792 12687 1042 1041 profiler3.linked3.o kprobe__vfs_link success 7332 10601 865 865 profiler2.linked3.o kprobe_ret__do_filp_open success 3417 8900 216 199 profiler2.linked3.o kprobe__vfs_symlink success 3548 8775 203 186 pyperf_global.linked3.o on_event success 10007 7563 520 520 profiler3.linked3.o kprobe_ret__do_filp_open success 4708 6464 532 532 profiler1.linked3.o kprobe_ret__do_filp_open success 3090 6445 508 508 profiler3.linked3.o kprobe__vfs_symlink success 4477 6358 521 521 profiler1.linked3.o kprobe__vfs_symlink success 3381 6347 507 507 profiler2.linked3.o raw_tracepoint__sched_process_exec success 2464 5874 292 189 profiler3.linked3.o raw_tracepoint__sched_process_exec success 2677 4363 397 283 profiler2.linked3.o kprobe__proc_sys_write success 1800 4355 143 138 profiler1.linked3.o raw_tracepoint__sched_process_exec success 1649 4019 333 240 pyperf600_bpf_loop.linked3.o on_event success 2711 3966 306 306 profiler2.linked3.o raw_tracepoint__sched_process_exit success 1234 3138 83 66 profiler3.linked3.o kprobe__proc_sys_write success 1755 2623 223 223 profiler1.linked3.o kprobe__proc_sys_write success 1222 2456 193 193 loop2.linked3.o while_true success 608 1783 57 30 profiler3.linked3.o raw_tracepoint__sched_process_exit success 789 1680 146 146 profiler1.linked3.o raw_tracepoint__sched_process_exit success 592 1526 133 133 strobemeta_bpf_loop.linked3.o on_event success 1015 1512 106 106 loop4.linked3.o combinations success 165 524 18 17 profiler3.linked3.o raw_tracepoint__sched_process_fork success 196 299 25 25 profiler1.linked3.o raw_tracepoint__sched_process_fork success 109 265 19 19 profiler2.linked3.o raw_tracepoint__sched_process_fork success 111 265 19 19 loop5.linked3.o while_true success 47 84 9 9 ------------------------------------ ------------------------------------ ------- ------------ ----------- ------------ ----------- Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220909193053.577111-4-andrii@kernel.org
2022-09-16libbpf: Fix crash if SEC("freplace") programs don't have attach_prog_fd setAndrii Nakryiko
Fix SIGSEGV caused by libbpf trying to find attach type in vmlinux BTF for freplace programs. It's wrong to search in vmlinux BTF and libbpf doesn't even mark vmlinux BTF as required for freplace programs. So trying to search anything in obj->vmlinux_btf might cause NULL dereference if nothing else in BPF object requires vmlinux BTF. Instead, error out if freplace (EXT) program doesn't specify attach_prog_fd during at the load time. Fixes: 91abb4a6d79d ("libbpf: Support attachment of BPF tracing programs to kernel modules") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220909193053.577111-3-andrii@kernel.org
2022-09-16selftests/bpf: Fix test_verif_scale{1,3} SEC() annotationsAndrii Nakryiko
Use proper SEC("tc") for test_verif_scale{1,3} programs. It's not a problem for selftests right now because we manually set type programmatically, but not having correct SEC() definitions makes it harded to generically load BPF object files. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220909193053.577111-2-andrii@kernel.org
2022-09-16ftrace: Add HAVE_DYNAMIC_FTRACE_NO_PATCHABLEPeter Zijlstra (Intel)
x86 will shortly start using -fpatchable-function-entry for purposes other than ftrace, make sure the __patchable_function_entry section isn't merged in the mcount_loc section. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220903131154.420467-2-jolsa@kernel.org
2022-09-16net: Add tests for bonding and team address list managementBenjamin Poirier
Test that the bonding and team drivers clean up an underlying device's address lists (dev->uc, dev->mc) when the aggregated device is deleted. Test addition and removal of the LACPDU multicast address on underlying devices by the bonding driver. v2: * add lag_lib.sh to TEST_FILES v3: * extend bond_listen_lacpdu_multicast test to init_state up and down cases * remove some superfluous shell syntax and 'set dev ... up' commands Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add tunnel_key action deleting test caseZhengchao Shao
Test 3671: Delete tunnel_key set action with valid index Test 8597: Delete tunnel_key set action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add sample action deleting test caseZhengchao Shao
Test 3872: Delete sample action with valid index Test a394: Delete sample action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add nat action deleting test caseZhengchao Shao
Test b811: Delete nat action with valid index Test a521: Delete nat action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add ife action deleting test caseZhengchao Shao
Test a972: Delete ife encode action with valid index Test 1272: Delete ife encode action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add connmark action deleting test caseZhengchao Shao
Test 6571: Delete connmark action with valid index Test 3426: Delete connmark action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add selftests for xt actionZhengchao Shao
Test 2029: Add xt action with log-prefix Test 3562: Replace xt action log-prefix Test 8291: Delete xt action with valid index Test 5169: Delete xt action with invalid index Test 7284: List xt actions Test 5010: Flush xt actions Test 8437: Add xt action with duplicate index Test 2837: Add xt action with invalid index Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add selftests for gate actionZhengchao Shao
Test 5153: Add gate action with priority and sched-entry Test 7189: Add gate action with base-time Test a721: Add gate action with cycle-time Test c029: Add gate action with cycle-time-ext Test 3719: Replace gate base-time action Test d821: Delete gate action with valid index Test 3128: Delete gate action with invalid index Test 7837: List gate actions Test 9273: Flush gate actions Test c829: Add gate action with duplicate index Test 3043: Add gate action with invalid index Test 2930: Add gate action with cookie Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-16selftests/tc-testings: add selftests for ctinfo actionZhengchao Shao
Test c826: Add ctinfo action with default setting Test 0286: Add ctinfo action with dscp Test 4938: Add ctinfo action with valid cpmark and zone Test 7593: Add ctinfo action with drop control Test 2961: Replace ctinfo action zone and action control Test e567: Delete ctinfo action with valid index Test 6a91: Delete ctinfo action with invalid index Test 5232: List ctinfo actions Test 7702: Flush ctinfo actions Test 3201: Add ctinfo action with duplicate index Test 8295: Add ctinfo action with invalid index Test 3964: Replace ctinfo action with invalid goto_chain control Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-15selftests: mptcp: move prefix tests of addr_nr_ns2 togetherGeliang Tang
Move the fullmesh prefix test of addr_nr_ns2 together with its other prefix tests. Signed-off-by: Geliang Tang <geliang.tang@suse.com> Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-14selftests/landlock: Fix out-of-tree buildsMickaël Salaün
These changes simplify the Makefile and handle these 5 ways to build Landlock tests: - make -C tools/testing/selftests/landlock - make -C tools/testing/selftests TARGETS=landlock gen_tar - make TARGETS=landlock kselftest-gen_tar - make TARGETS=landlock O=build kselftest-gen_tar - make -C /tmp/linux TARGETS=landlock O=/tmp/build kselftest-gen_tar This also makes $(KHDR_INCLUDES) available to other test collections when building in their directory. Fixes: f1227dc7d041 ("selftests/landlock: fix broken include of linux/landlock.h") Fixes: 3bb267a36185 ("selftests: drop khdr make target") Cc: Anders Roxell <anders.roxell@linaro.org> Cc: Guillaume Tucker <guillaume.tucker@collabora.com> Cc: Mark Brown <broonie@kernel.org> Cc: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20220909103402.1501802-1-mic@digikod.net
2022-09-13Revert "selftests/timens: add a test for vfork+exit"Andrei Vagin
The next patch reverts the code that this test verified. This reverts commit 6342140db6609a0c7d34f68c52b2947468e0e630. Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220913102551.1121611-2-avagin@google.com
2022-09-13tools/include/uapi: Fix <asm/errno.h> for parisc and xtensaBen Hutchings
tools/include/uapi/asm/errno.h currently attempts to include non-existent arch-specific errno.h header for xtensa. Remove this case so that <asm-generic/errno.h> is used instead, and add the missing arch-specific header for parisc. References: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=ia64&ver=5.8.3-1%7Eexp1&stamp=1598340829&raw=1 Signed-off-by: Ben Hutchings <benh@debian.org> Signed-off-by: Salvatore Bonaccorso <carnil@debian.org> Cc: <stable@vger.kernel.org> # 5.10+ Signed-off-by: Helge Deller <deller@gmx.de>
2022-09-12Merge tag 'hyperv-fixes-signed-20220912' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv fixes from Wei Liu: - Fix an error handling issue in DRM driver (Christophe JAILLET) - Fix some issues in framebuffer driver (Vitaly Kuznetsov) - Two typo fixes (Jason Wang, Shaomin Deng) - Drop unnecessary casting in kvp tool (Zhou Jie) * tag 'hyperv-fixes-signed-20220912' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: Drivers: hv: Never allocate anything besides framebuffer from framebuffer memory region Drivers: hv: Always reserve framebuffer region for Gen1 VMs PCI: Move PCI_VENDOR_ID_MICROSOFT/PCI_DEVICE_ID_HYPERV_VIDEO definitions to pci_ids.h tools: hv: kvp: remove unnecessary (void*) conversions Drivers: hv: remove duplicate word in a comment tools: hv: Remove an extraneous "the" drm/hyperv: Fix an error handling path in hyperv_vmbus_probe()
2022-09-11tools: fix compilation after gfp_types.h splitMatthew Wilcox (Oracle)
When gfp_types.h was split from gfp.h, it broke the radix test suite. Fix the test suite by using gfp_types.h in the tools gfp.h header. Link: https://lkml.kernel.org/r/20220902191923.1735933-1-willy@infradead.org Fixes: cb5a065b4ea9 (headers/deps: mm: Split <linux/gfp_types.h> out of <linux/gfp.h>) Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reported-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Yury Norov <yury.norov@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-09-10selftests/bpf: fix ct status check in bpf_nf selftestsLorenzo Bianconi
Check properly the connection tracking entry status configured running bpf_ct_change_status kfunc. Remove unnecessary IPS_CONFIRMED status configuration since it is already done during entry allocation. Fixes: 6eb7fba007a7 ("selftests/bpf: Add tests for new nf_conntrack kfuncs") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Acked-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/813a5161a71911378dfac8770ec890428e4998aa.1662623574.git.lorenzo@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-09-10selftests/bpf: Add tests for writing to nf_conn:markDaniel Xu
Add a simple extension to the existing selftest to write to nf_conn:mark. Also add a failure test for writing to unsupported field. Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> Link: https://lore.kernel.org/r/f78966b81b9349d2b8ebb4cee2caf15cb6b38ee2.1662568410.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-09-09Merge tag 'linux-kselftest-kunit-fixes-6.0-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit fixes from Shuah Khan: "Two fixes to test build and a fix for incorrect taint reason reporting" * tag 'linux-kselftest-kunit-fixes-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: tools: Add new "test" taint to kernel-chktaint kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves kunit: fix assert_type for comparison macros
2022-09-09selftests/bpf: Ensure cgroup/connect{4,6} programs can bind unpriv ICMP pingYiFei Zhu
This tests that when an unprivileged ICMP ping socket connects, the hooks are actually invoked. We also ensure that if the hook does not call bpf_bind(), the bound address is unmodified, and if the hook calls bpf_bind(), the bound address is exactly what we provided to the helper. A new netns is used to enable ping_group_range in the test without affecting ouside of the test, because by default, not even root is permitted to use unprivileged ICMP ping... Signed-off-by: YiFei Zhu <zhuyifei@google.com> Link: https://lore.kernel.org/r/086b227c1b97f4e94193e58aae7576d0261b68a4.1662682323.git.zhuyifei@google.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2022-09-09selftests/bpf: Deduplicate write_sysctl() to test_progs.cYiFei Zhu
This helper is needed in multiple tests. Instead of copying it over and over, better to deduplicate this helper to test_progs.c. test_progs.c is chosen over testing_helpers.c because of this helper's use of CHECK / ASSERT_*, and the CHECK was modified to use ASSERT_* so it does not rely on a duration variable. Suggested-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: YiFei Zhu <zhuyifei@google.com> Link: https://lore.kernel.org/r/9b4fc9a27bd52f771b657b4c4090fc8d61f3a6b5.1662682323.git.zhuyifei@google.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2022-09-09libbpf: Remove gcc support for bpf_tail_call_static for nowDaniel Borkmann
This reverts commit 14e5ce79943a ("libbpf: Add GCC support for bpf_tail_call_static"). Reason is that gcc invented their own BPF asm which is not conform with LLVM one, and going forward this would be more painful to maintain here and in other areas of the library. Thus remove it; ask to gcc folks is to align with LLVM one to use exact same syntax. Fixes: 14e5ce79943a ("libbpf: Add GCC support for bpf_tail_call_static") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: James Hilliard <james.hilliard1@gmail.com> Cc: Jose E. Marchesi <jose.marchesi@oracle.com>
2022-09-09Merge tag 'perf-tools-fixes-for-v6.0-2022-09-08' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tools fixes from Arnaldo Carvalho de Melo: - Fix per-thread mmaps for multi-threaded targets, noticed with 'perf top --pid' with multithreaded targets - Fix synthesis failure warnings in 'perf record' - Fix L2 Topdown metrics disappearance for raw events in 'perf stat' - Fix out of bound access in some CPU masks - Fix segfault if there is no CPU PMU table and a metric is sought, noticed when building with NO_JEVENTS=1 - Skip dummy event attr check in 'perf script' fixing nonsensical warning about UREGS attribute not set, as 'dummy' events have no samples - Fix 'iregs' field handling with dummy events on hybrid systems in 'perf script' - Prevent potential memory leak in c2c_he_zalloc() in 'perf c2c' - Don't install data files with x permissions - Fix types for print format in dlfilter-show-cycles - Switch deprecated openssl MD5_* functions to new EVP API in 'genelf' - Remove redundant word 'contention' in 'perf lock' help message * tag 'perf-tools-fixes-for-v6.0-2022-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf record: Fix synthesis failure warnings perf tools: Don't install data files with x permissions perf script: Fix Cannot print 'iregs' field for hybrid systems perf lock: Remove redundant word 'contention' in help message perf dlfilter dlfilter-show-cycles: Fix types for print format libperf evlist: Fix per-thread mmaps for multi-threaded targets perf c2c: Prevent potential memory leak in c2c_he_zalloc() perf genelf: Switch deprecated openssl MD5_* functions to new EVP API tools/perf: Fix out of bound access to cpu mask array perf affinity: Fix out of bound access to "sched_cpus" mask perf stat: Fix L2 Topdown metrics disappear for raw events perf script: Skip dummy event attr check perf metric: Return early if no CPU PMU table exists
2022-09-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nfDavid S. Miller
Florian Westhal says: ==================== netfilter: bugfixes for net The following set contains four netfilter patches for your *net* tree. When there are multiple Contact headers in a SIP message its possible the next headers won't be found because the SIP helper confuses relative and absolute offsets in the message. From Igor Ryzhov. Make the nft_concat_range self-test support socat, this makes the selftest pass on my test VM, from myself. nf_conntrack_irc helper can be tricked into opening a local port forward that the client never requested by embedding a DCC message in a PING request sent to the client. Fix from David Leadbeater. Both have been broken since the kernel 2.6.x days. The 'osf' match might indicate success while it could not find anything, broken since 5.2 . Fix from Pablo Neira. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-08perf record: Fix synthesis failure warningsAdrian Hunter
Some calls to synthesis functions set err < 0 but only warn about the failure and continue. However they do not set err back to zero, relying on subsequent code to do that. That changed with the introduction of option --synth. When --synth=no subsequent functions that set err back to zero are not called. Fix by setting err = 0 in those cases. Example: Before: $ perf record --no-bpf-event --synth=all -o /tmp/huh uname Couldn't synthesize bpf events. Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.014 MB /tmp/huh (7 samples) ] $ perf record --no-bpf-event --synth=no -o /tmp/huh uname Couldn't synthesize bpf events. After: $ perf record --no-bpf-event --synth=no -o /tmp/huh uname Couldn't synthesize bpf events. Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.014 MB /tmp/huh (7 samples) ] Fixes: 41b740b6e8a994e5 ("perf record: Add --synth option") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220907162458.72817-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-09-08perf tools: Don't install data files with x permissionsJiri Slaby
install(1), by default, installs with rwxr-xr-x permissions. Modify perf's Makefile to pass '-m 644' when installing: * Documentation/tips.txt * examples/bpf/* * perf-completion.sh * perf_dlfilter.h header * scripts/perl/Perf-Trace-Util/lib/Perf/Trace/* * scripts/perl/*.pl * tests/attr/* * tests/attr.py * tests/shell/lib/*.sh * trace/strace/groups/* All those are supposed to be non-executable. Either they are not scripts at all, or they don't have shebang. Signed-off-by: <jslaby@suse.cz> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220908060426.9619-1-jslaby@suse.cz Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-09-08perf script: Fix Cannot print 'iregs' field for hybrid systemsZhengjun Xing
Commit b91e5492f9d7ca89 ("perf record: Add a dummy event on hybrid systems to collect metadata records") adds a dummy event on hybrid systems to fix the symbol "unknown" issue when the workload is created in a P-core but runs on an E-core. The added dummy event will cause "perf script -F iregs" to fail. Dummy events do not have "iregs" attribute set, so when we do evsel__check_attr, the "iregs" attribute check will fail, so the issue happened. The following commit [1] has fixed a similar issue by skipping the attr check for the dummy event because it does not have any samples anyway. It works okay for the normal mode, but the issue still happened when running the test in the pipe mode. In the pipe mode, it calls process_attr() which still checks the attr for the dummy event. This commit fixed the issue by skipping the attr check for the dummy event in the API evsel__check_attr, Otherwise, we have to patch everywhere when evsel__check_attr() is called. Before: #./perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p -c 1000 --per-thread true 2>/dev/null|./perf script -F iregs |head -5 Samples for 'dummy:HG' event do not have IREGS attribute set. Cannot print 'iregs' field. 0x120 [0x90]: failed to process type: 64 # After: # ./perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p -c 1000 --per-thread true 2>/dev/null|./perf script -F iregs |head -5 ABI:2 CX:0x55b8efa87000 DX:0x55b8efa7e000 DI:0xffffba5e625efbb0 R8:0xffff90e51f8ae100 ABI:2 CX:0x7f1dae1e4000 DX:0xd0 DI:0xffff90e18c675ac0 R8:0x71 ABI:2 CX:0xcc0 DX:0x1 DI:0xffff90e199880240 R8:0x0 ABI:2 CX:0xffff90e180dd7500 DX:0xffff90e180dd7500 DI:0xffff90e180043500 R8:0x1 ABI:2 CX:0x50 DX:0xffff90e18c583bd0 DI:0xffff90e1998803c0 R8:0x58 # [1]https://lore.kernel.org/lkml/20220831124041.219925-1-jolsa@kernel.org/ Fixes: b91e5492f9d7ca89 ("perf record: Add a dummy event on hybrid systems to collect metadata records") Suggested-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Xing Zhengjun <zhengjun.xing@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220908070030.3455164-1-zhengjun.xing@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-09-08perf lock: Remove redundant word 'contention' in help messageYang Jihong
Before: # perf lock -h Usage: perf lock [<options>] {record|report|script|info|contention|contention} -D, --dump-raw-trace dump raw trace in ASCII -f, --force don't complain, do it -i, --input <file> input file name -v, --verbose be more verbose (show symbol address, etc) --kallsyms <file> kallsyms pathname --vmlinux <file> vmlinux pathname After: # perf lock -h Usage: perf lock [<options>] {record|report|script|info|contention} -D, --dump-raw-trace dump raw trace in ASCII -f, --force don't complain, do it -i, --input <file> input file name -v, --verbose be more verbose (show symbol address, etc) --kallsyms <file> kallsyms pathname --vmlinux <file> vmlinux pathname Fixes: 528b9cab3b813a3b ("perf lock: Add 'contention' subcommand") Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220908014854.151203-1-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-09-08Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni
drivers/net/ethernet/freescale/fec.h 7d650df99d52 ("net: fec: add pm_qos support on imx6q platform") 40c79ce13b03 ("net: fec: add stop mode support for imx8 platform") Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-08perf dlfilter dlfilter-show-cycles: Fix types for print formatAdrian Hunter
Avoid compiler warning about format %llu that expects long long unsigned int but argument has type __u64. Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Fixes: c3afd6e50fce824f ("perf dlfilter: Add dlfilter-show-cycles") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220905074735.4513-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-09-08libperf evlist: Fix per-thread mmaps for multi-threaded targetsAdrian Hunter
The offending commit removed mmap_per_thread(), which did not consider the different set-output rules for per-thread mmaps i.e. in the per-thread case set-output is used for file descriptors of the same thread not the same cpu. This was not immediately noticed because it only happens with multi-threaded targets and we do not have a test for that yet. Reinstate mmap_per_thread() expanding it to cover also system-wide per-cpu events i.e. to continue to allow the mixing of per-thread and per-cpu mmaps. Debug messages (with -vv) show the file descriptors that are opened with sys_perf_event_open. New debug messages are added (needs -vvv) that show also which file descriptors are mmapped and which are redirected with set-output. In the per-cpu case (cpu != -1) file descriptors for the same CPU are set-output to the first file descriptor for that CPU. In the per-thread case (cpu == -1) file descriptors for the same thread are set-output to the first file descriptor for that thread. Example (process 17489 has 2 threads): Before (but with new debug prints): $ perf record --no-bpf-event -vvv --per-thread -p 17489 <SNIP> sys_perf_event_open: pid 17489 cpu -1 group_fd -1 flags 0x8 = 5 sys_perf_event_open: pid 17490 cpu -1 group_fd -1 flags 0x8 = 6 <SNIP> libperf: idx 0: mmapping fd 5 libperf: idx 0: set output fd 6 -> 5 failed to mmap with 22 (Invalid argument) After: $ perf record --no-bpf-event -vvv --per-thread -p 17489 <SNIP> sys_perf_event_open: pid 17489 cpu -1 group_fd -1 flags 0x8 = 5 sys_perf_event_open: pid 17490 cpu -1 group_fd -1 flags 0x8 = 6 <SNIP> libperf: mmap_per_thread: nr cpu values (may include -1) 1 nr threads 2 libperf: idx 0: mmapping fd 5 libperf: idx 1: mmapping fd 6 <SNIP> [ perf record: Woken up 2 times to write data ] [ perf record: Captured and wrote 0.018 MB perf.data (15 samples) ] Per-cpu example (process 20341 has 2 threads, same as above): $ perf record --no-bpf-event -vvv -p 20341 <SNIP> sys_perf_event_open: pid 20341 cpu 0 group_fd -1 flags 0x8 = 5 sys_perf_event_open: pid 20342 cpu 0 group_fd -1 flags 0x8 = 6 sys_perf_event_open: pid 20341 cpu 1 group_fd -1 flags 0x8 = 7 sys_perf_event_open: pid 20342 cpu 1 group_fd -1 flags 0x8 = 8 sys_perf_event_open: pid 20341 cpu 2 group_fd -1 flags 0x8 = 9 sys_perf_event_open: pid 20342 cpu 2 group_fd -1 flags 0x8 = 10 sys_perf_event_open: pid 20341 cpu 3 group_fd -1 flags 0x8 = 11 sys_perf_event_open: pid 20342 cpu 3 group_fd -1 flags 0x8 = 12 sys_perf_event_open: pid 20341 cpu 4 group_fd -1 flags 0x8 = 13 sys_perf_event_open: pid 20342 cpu 4 group_fd -1 flags 0x8 = 14 sys_perf_event_open: pid 20341 cpu 5 group_fd -1 flags 0x8 = 15 sys_perf_event_open: pid 20342 cpu 5 group_fd -1 flags 0x8 = 16 sys_perf_event_open: pid 20341 cpu 6 group_fd -1 flags 0x8 = 17 sys_perf_event_open: pid 20342 cpu 6 group_fd -1 flags 0x8 = 18 sys_perf_event_open: pid 20341 cpu 7 group_fd -1 flags 0x8 = 19 sys_perf_event_open: pid 20342 cpu 7 group_fd -1 flags 0x8 = 20 <SNIP> libperf: mmap_per_cpu: nr cpu values 8 nr threads 2 libperf: idx 0: mmapping fd 5 libperf: idx 0: set output fd 6 -> 5 libperf: idx 1: mmapping fd 7 libperf: idx 1: set output fd 8 -> 7 libperf: idx 2: mmapping fd 9 libperf: idx 2: set output fd 10 -> 9 libperf: idx 3: mmapping fd 11 libperf: idx 3: set output fd 12 -> 11 libperf: idx 4: mmapping fd 13 libperf: idx 4: set output fd 14 -> 13 libperf: idx 5: mmapping fd 15 libperf: idx 5: set output fd 16 -> 15 libperf: idx 6: mmapping fd 17 libperf: idx 6: set output fd 18 -> 17 libperf: idx 7: mmapping fd 19 libperf: idx 7: set output fd 20 -> 19 <SNIP> [ perf record: Woken up 7 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (17 samples) ] Fixes: ae4f8ae16a078964 ("libperf evlist: Allow mixing per-thread and per-cpu mmaps") Reported-by: Tomáš Trnka <trnka@scm.com> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216441 Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220905114209.8389-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-09-08Merge tag 'net-6.0-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from rxrpc, netfilter, wireless and bluetooth subtrees. Current release - regressions: - skb: export skb drop reaons to user by TRACE_DEFINE_ENUM - bluetooth: fix regression preventing ACL packet transmission Current release - new code bugs: - dsa: microchip: fix kernel oops on ksz8 switches - dsa: qca8k: fix NULL pointer dereference for of_device_get_match_data Previous releases - regressions: - netfilter: clean up hook list when offload flags check fails - wifi: mt76: fix crash in chip reset fail - rxrpc: fix ICMP/ICMP6 error handling - ice: fix DMA mappings leak - i40e: fix kernel crash during module removal Previous releases - always broken: - ipv6: sr: fix out-of-bounds read when setting HMAC data. - tcp: TX zerocopy should not sense pfmemalloc status - sch_sfb: don't assume the skb is still around after enqueueing to child - netfilter: drop dst references before setting - wifi: wilc1000: fix DMA on stack objects - rxrpc: fix an insufficiently large sglist in rxkad_verify_packet_2() - fec: use a spinlock to guard `fep->ptp_clk_on` Misc: - usb: qmi_wwan: add Quectel RM520N" * tag 'net-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits) sch_sfb: Also store skb len before calling child enqueue net: phy: lan87xx: change interrupt src of link_up to comm_ready net/smc: Fix possible access to freed memory in link clear net: ethernet: mtk_eth_soc: check max allowed hash in mtk_ppe_check_skb net: skb: export skb drop reaons to user by TRACE_DEFINE_ENUM net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clear net: dsa: felix: access QSYS_TAG_CONFIG under tas_lock in vsc9959_sched_speed_set net: dsa: felix: disable cut-through forwarding for frames oversized for tc-taprio net: dsa: felix: tc-taprio intervals smaller than MTU should send at least one packet net: usb: qmi_wwan: add Quectel RM520N net: dsa: qca8k: fix NULL pointer dereference for of_device_get_match_data tcp: fix early ETIMEDOUT after spurious non-SACK RTO stmmac: intel: Simplify intel_eth_pci_remove() net: mvpp2: debugfs: fix memory leak when using debugfs_lookup() ipv6: sr: fix out-of-bounds read when setting HMAC data. bonding: accept unsolicited NA message bonding: add all node mcast address when slave up bonding: use unspecified address if no available link local address wifi: use struct_group to copy addresses wifi: mac80211_hwsim: check length for virtio packets ...
2022-09-07lkdtm: Update tests for memcpy() run-time warningsKees Cook
Clarify the LKDTM FORTIFY tests, and add tests for the mem*() family of functions, now that run-time checking is distinct. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Shuah Khan <shuah@kernel.org> Cc: linux-kselftest@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
2022-09-07tools: Add new "test" taint to kernel-chktaintJoe Fradley
Commit c272612cb4a2 ("kunit: Taint the kernel when KUnit tests are run") added a new taint flag for when in-kernel tests run. This commit adds recognition of this new flag in kernel-chktaint. With this change the correct reason will be reported if the kernel is tainted because of a test run. Amended Commit log: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Joe Fradley <joefradley@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-09-07selftests/bpf: Add tests for kfunc returning a memory pointerBenjamin Tissoires
We add 2 new kfuncs that are following the RET_PTR_TO_MEM capability from the previous commit. Then we test them in selftests: the first tests are testing valid case, and are not failing, and the later ones are actually preventing the program to be loaded because they are wrong. To work around that, we mark the failing ones as not autoloaded (with SEC("?tc")), and we manually enable them one by one, ensuring the verifier rejects them. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20220906151303.2780789-8-benjamin.tissoires@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-09-07selftests/bpf: add test for accessing ctx from syscall program typeBenjamin Tissoires
We need to also export the kfunc set to the syscall program type, and then add a couple of eBPF programs that are testing those calls. The first one checks for valid access, and the second one is OK from a static analysis point of view but fails at run time because we are trying to access outside of the allocated memory. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20220906151303.2780789-5-benjamin.tissoires@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2022-09-07selftests/bpf: regroup and declare similar kfuncs selftests in an arrayBenjamin Tissoires
Similar to tools/testing/selftests/bpf/prog_tests/dynptr.c: we declare an array of tests that we run one by one in a for loop. Followup patches will add more similar-ish tests, so avoid a lot of copy paste by grouping the declaration in an array. For light skeletons, we have to rely on the offsetof() macro so we can statically declare which program we are using. In the libbpf case, we can rely on bpf_object__find_program_by_name(). So also change the Makefile to generate both light skeletons and normal ones. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20220906151303.2780789-2-benjamin.tissoires@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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