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2018-12-09bpf: Add unit tests for bpf_line_infoMartin KaFai Lau1-17/+580
Add unit tests for bpf_line_info for both BPF_PROG_LOAD and BPF_OBJ_GET_INFO_BY_FD. jit enabled: [root@arch-fb-vm1 bpf]# ./test_btf -k 0 BTF prog info raw test[5] (line_info (No subprog)): OK BTF prog info raw test[6] (line_info (No subprog. insn_off >= prog->len)): OK BTF prog info raw test[7] (line_info (No subprog. zero tailing line_info): OK BTF prog info raw test[8] (line_info (No subprog. nonzero tailing line_info)): OK BTF prog info raw test[9] (line_info (subprog)): OK BTF prog info raw test[10] (line_info (subprog + func_info)): OK BTF prog info raw test[11] (line_info (subprog. missing 1st func line info)): OK BTF prog info raw test[12] (line_info (subprog. missing 2nd func line info)): OK BTF prog info raw test[13] (line_info (subprog. unordered insn offset)): OK jit disabled: BTF prog info raw test[5] (line_info (No subprog)): not jited. skipping jited_line_info check. OK BTF prog info raw test[6] (line_info (No subprog. insn_off >= prog->len)): OK BTF prog info raw test[7] (line_info (No subprog. zero tailing line_info): not jited. skipping jited_line_info check. OK BTF prog info raw test[8] (line_info (No subprog. nonzero tailing line_info)): OK BTF prog info raw test[9] (line_info (subprog)): not jited. skipping jited_line_info check. OK BTF prog info raw test[10] (line_info (subprog + func_info)): not jited. skipping jited_line_info check. OK BTF prog info raw test[11] (line_info (subprog. missing 1st func line info)): OK BTF prog info raw test[12] (line_info (subprog. missing 2nd func line info)): OK BTF prog info raw test[13] (line_info (subprog. unordered insn offset)): OK Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Yonghong Song <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-09bpf: Refactor and bug fix in test_func_type in test_btf.cMartin KaFai Lau1-86/+125
1) bpf_load_program_xattr() is absorbing the EBIG error which makes testing this case impossible. It is replaced with a direct syscall(__NR_bpf, BPF_PROG_LOAD,...). 2) The test_func_type() is renamed to test_info_raw() to prepare for the new line_info test in the next patch. 3) The bpf_obj_get_info_by_fd() testing for func_info is refactored to test_get_finfo(). A new test_get_linfo() will be added in the next patch for testing line_info purpose. 4) The test->func_info_cnt is checked instead of a static value "2". 5) Remove unnecessary "\n" in error message. 6) Adding back info_raw_test_num to the cmd arg such that a specific test case can be tested, like all other existing tests. 7) Fix a bug in handling expected_prog_load_failure. A test could pass even if prog_fd != -1 while expected_prog_load_failure is true. 8) The min rec_size check should be < 8 instead of < 4. Fixes: 4798c4ba3ba9 ("tools/bpf: extends test_btf to test load/retrieve func_type info") Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Yonghong Song <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-09bpf: tools: Sync uapi bpf.hMartin KaFai Lau1-0/+19
Sync uapi bpf.h to tools/include/uapi/linux for the new bpf_line_info. Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Yonghong Song <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-09Merge tag 'libnvdimm-fixes-4.20-rc6' of ↵Linus Torvalds1-2/+33
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fixes from Dan Williams: "A regression fix for the Address Range Scrub implementation, yes another one, and support for platforms that misalign persistent memory relative to the Linux memory hotplug section constraint. Longer term, support for sub-section memory hotplug would alleviate alignment waste, but until then this hack allows a 'struct page' memmap to be established for these misaligned memory regions. These have all appeared in a -next release, and thanks to Patrick for reporting and testing the alignment padding fix. Summary: - Unless and until the core mm handles memory hotplug units smaller than a section (128M), persistent memory namespaces must be padded to section alignment. The libnvdimm core already handled section collision with "System RAM", but some configurations overlap independent "Persistent Memory" ranges within a section, so additional padding injection is added for that case. - The recent reworks of the ARS (address range scrub) state machine to reduce the number of state flags inadvertantly missed a conversion of acpi_nfit_ars_rescan() call sites. Fix the regression whereby user-requested ARS results in a "short" scrub rather than a "long" scrub. - Fixup the unit tests to handle / test the 128M section alignment of mocked test resources. * tag 'libnvdimm-fixes-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: acpi/nfit: Fix user-initiated ARS to be "ARS-long" rather than "ARS-short" libnvdimm, pfn: Pad pfn namespaces relative to other regions tools/testing/nvdimm: Align test resources to 128M
2018-12-07tc-testing: gitignore, ignore generated test resultsLucas Bates1-0/+3
Ignore any .tap or .xml test result files generated by tdc. Additionally, ignore plugin symlinks. Signed-off-by: Lucas Bates <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-07tc-testing: Implement the TdcResults module in tdcLucas Bates3-51/+91
In tdc and the valgrind plugin, begin using the TdcResults module to track executed test cases. Signed-off-by: Lucas Bates <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-07tc-testing: Add new TdcResults moduleLucas Bates1-0/+132
This module includes new classes for tdc to use in keeping track of test case results, instead of generating and tracking a lengthy string. The new module can be extended to support multiple formal test result formats to be friendlier to automation. Signed-off-by: Lucas Bates <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-07tc-testing: Add command timeout feature to tdcLucas Bates2-5/+13
Using an attribute set in the tdc_config.py file, limit the amount of time tdc will wait for an executed command to complete and prevent the script from hanging entirely. This timeout will be applied to all executed commands. Signed-off-by: Lucas Bates <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-07selftests/bpf: use thoff instead of nhoff in BPF flow dissectorStanislav Fomichev1-19/+17
We are returning thoff from the flow dissector, not the nhoff. Pass thoff along with nhoff to the bpf program (initially thoff == nhoff) and expect flow dissector amend/return thoff, not nhoff. This avoids confusion, when by the time bpf flow dissector exits, nhoff == thoff, which doesn't make much sense. Signed-off-by: Stanislav Fomichev <[email protected]> Acked-by: Song Liu <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-07selftests: bpf: update testcases for BPF_ALU | BPF_ARSHJiong Wang1-4/+25
"arsh32 on imm" and "arsh32 on reg" now are accepted. Also added two new testcases to make sure arsh32 won't be treated as arsh64 during interpretation or JIT code-gen for which case the high bits will be moved into low halve that the testcases could catch them. Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: Jiong Wang <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-07selftests: forwarding: Add PVID test case for VXLAN with VLAN-aware bridgesIdo Schimmel1-0/+70
When using VLAN-aware bridges with VXLAN, the VLAN that is mapped to the VNI of the VXLAN device is that which is configured as "pvid untagged" on the corresponding bridge port. When these flags are toggled or when the VLAN is deleted entirely, remote hosts should not be able to receive packets from the VTEP. Add a test case for above mentioned scenarios. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-07selftests: mlxsw: vxlan: Test FDB un/marking on VXLAN join/leavePetr Machata1-0/+177
When a VXLAN device is attached to an offloaded bridge, or when a front-panel port is attached to a bridge that already has a VXLAN device, mlxsw should offload the existing offloadable FDB entries. Similarly when VXLAN device is downed, the FDB entries are unoffloaded, and the marks thus need to be cleared. Similarly when a front-panel port device is attached to a bridge with a VXLAN device, or when VLAN flags are tweaked on a VXLAN port attached to a VLAN-aware bridge. Test that the replaying / clearing logic works by observing transitions in presence of offload marks under different scenarios. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-07crypto: user - rename err_cnt parameterCorentin Labbe1-9/+9
Since now all crypto stats are on their own structures, it is now useless to have the algorithm name in the err_cnt member. Signed-off-by: Corentin Labbe <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
2018-12-07crypto: tool: getstat: convert user space example to the new ↵Corentin Labbe1-27/+27
crypto_user_stat uapi This patch converts the getstat example tool to the recent changes done in crypto_user_stat - changed all stats to u64 - separated struct stats for each crypto alg Signed-off-by: Corentin Labbe <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
2018-12-06selftests: mlxsw: Add a new test extack.shPetr Machata1-0/+84
Add a testsuite dedicated to testing extack propagation and related functionality. Signed-off-by: Petr Machata <[email protected]> Acked-by: Jiri Pirko <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-06radix tree: Don't return retry entries from lookupMatthew Wilcox4-0/+82
Commit 66ee620f06f9 ("idr: Permit any valid kernel pointer to be stored") changed the radix tree lookup so that it stops when reaching the bottom of the tree. However, the condition was added in the wrong place, making it possible to return retry entries to the caller. Reorder the tests to check for the retry entry before checking whether we're at the bottom of the tree. The retry entry should never be found in the tree root, so it's safe to defer the check until the end of the loop. Add a regression test to the test-suite to be sure this doesn't come back. Fixes: 66ee620f06f9 ("idr: Permit any valid kernel pointer to be stored") Reported-by: Greg Kurz <[email protected]> Signed-off-by: Matthew Wilcox <[email protected]>
2018-12-05bpf: Expect !info.func_info and insn_off name changes in test_btf/libbpf/bpftoolMartin KaFai Lau4-9/+22
Similar to info.jited_*, info.func_info could be 0 if bpf_dump_raw_ok() == false. This patch makes changes to test_btf and bpftool to expect info.func_info could be 0. This patch also makes the needed changes for s/insn_offset/insn_off/. Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Yonghong Song <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-05bpf: tools: Sync uapi bpf.h for the name changes in bpf_func_infoMartin KaFai Lau1-1/+1
This patch sync the name changes in bpf_func_info to the tools/. Signed-off-by: Martin KaFai Lau <[email protected]> Acked-by: Yonghong Song <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-05tools/testing/nvdimm: Align test resources to 128MDan Williams1-2/+33
In preparation for libnvdimm growing new restrictions to detect section conflicts between persistent memory regions, enable nfit_test to allocate aligned resources. Use a gen_pool to allocate nfit_test's fake resources in a separate address space from the virtual translation of the same. Reviewed-by: Vishal Verma <[email protected]> Tested-by: Vishal Verma <[email protected]> Signed-off-by: Dan Williams <[email protected]>
2018-12-05tools: bpftool: add a command to dump the trace pipeQuentin Monnet5-4/+176
BPF programs can use the bpf_trace_printk() helper to print debug information into the trace pipe. Add a subcommand "bpftool prog tracelog" to simply dump this pipe to the console. This is for a good part copied from iproute2, where the feature is available with "tc exec bpf dbg". Changes include dumping pipe content to stdout instead of stderr and adding JSON support (content is dumped as an array of strings, one per line read from the pipe). This version is dual-licensed, with Daniel's permission. Cc: Daniel Borkmann <[email protected]> Suggested-by: Daniel Borkmann <[email protected]> Signed-off-by: Quentin Monnet <[email protected]> Reviewed-by: Jakub Kicinski <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-12-05cpupower : Auto-completion for cpupower toolAbhishek Goel2-1/+133
This script adds support for auto-completion for cpupower tool. Added support for auto-completion of all the eight commands for cpupower tool and their all subsequent sub-commands, wherever possible. A sample output after applying this script - root@ubuntu:~# cpupower f<TAB> root@ubuntu:~# cpupower frequency-<TAB> frequency-info frequency-set root@ubuntu:~# cpupower frequency-set - -d --freq --governor --min --related -f -g --max -r -u root@ubuntu:~# cpupower frequency-set -g <TAB> conservative ondemand performance powersave schedutil userspace root@ubuntu:~# cpupower frequency-set -f <TAB> 2061000 2194000 2327000 2460000 2593000 2726000 2859000 2094000 2227000 2360000 2493000 2626000 2759000 2892000 2128000 2261000 2394000 2527000 2660000 2793000 2926000 2161000 2294000 2427000 2560000 2693000 2826000 2959000 root@ubuntu:~# cpupower frequency-set -f 206<TAB> root@ubuntu:~# cpupower frequency-set -f 2061000 Signed-off-by: Abhishek Goel <[email protected]> Signed-off-by: Bharath Thodla <[email protected]> Tested-by: Thomas Renninger <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2018-12-04selftests: mlxsw: Add one-armed router testIdo Schimmel1-0/+259
Construct a "one-armed router" topology and test that packets are forwarded by the ASIC and that a copy of the packet is sent to the kernel, which does not forward the packet again. Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-04bpf: improve verifier branch analysisAlexei Starovoitov1-2/+2
pathological bpf programs may try to force verifier to explode in the number of branch states: 20: (d5) if r1 s<= 0x24000028 goto pc+0 21: (b5) if r0 <= 0xe1fa20 goto pc+2 22: (d5) if r1 s<= 0x7e goto pc+0 23: (b5) if r0 <= 0xe880e000 goto pc+0 24: (c5) if r0 s< 0x2100ecf4 goto pc+0 25: (d5) if r1 s<= 0xe880e000 goto pc+1 26: (c5) if r0 s< 0xf4041810 goto pc+0 27: (d5) if r1 s<= 0x1e007e goto pc+0 28: (b5) if r0 <= 0xe86be000 goto pc+0 29: (07) r0 += 16614 30: (c5) if r0 s< 0x6d0020da goto pc+0 31: (35) if r0 >= 0x2100ecf4 goto pc+0 Teach verifier to recognize always taken and always not taken branches. This analysis is already done for == and != comparison. Expand it to all other branches. It also helps real bpf programs to be verified faster: before after bpf_lb-DLB_L3.o 2003 1940 bpf_lb-DLB_L4.o 3173 3089 bpf_lb-DUNKNOWN.o 1080 1065 bpf_lxc-DDROP_ALL.o 29584 28052 bpf_lxc-DUNKNOWN.o 36916 35487 bpf_netdev.o 11188 10864 bpf_overlay.o 6679 6643 bpf_lcx_jit.o 39555 38437 Reported-by: Anatoly Trosinenko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Daniel Borkmann <[email protected]> Acked-by: Edward Cree <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-12-04selftests: add a test for bpf_prog_test_run_xattrLorenz Bauer1-1/+54
Make sure that bpf_prog_test_run_xattr returns the correct length and that the kernel respects the output size hint. Also check that errno indicates ENOSPC if there is a short output buffer given. Signed-off-by: Lorenz Bauer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-04libbpf: add bpf_prog_test_run_xattrLorenz Bauer3-0/+43
Add a new function, which encourages safe usage of the test interface. bpf_prog_test_run continues to work as before, but should be considered unsafe. Signed-off-by: Lorenz Bauer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-04tools: sync uapi/linux/bpf.hLorenz Bauer1-2/+5
Pull changes from "bpf: respect size hint to BPF_PROG_TEST_RUN if present". Signed-off-by: Lorenz Bauer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-12-04Merge branch 'for-mingo' of ↵Ingo Molnar6-90/+2356
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu Pull RCU changes from Paul E. McKenney: - Convert RCU's BUG_ON() and similar calls to WARN_ON() and similar. - Replace calls of RCU-bh and RCU-sched update-side functions to their vanilla RCU counterparts. This series is a step towards complete removal of the RCU-bh and RCU-sched update-side functions. ( Note that some of these conversions are going upstream via their respective maintainers. ) - Documentation updates, including a number of flavor-consolidation updates from Joel Fernandes. - Miscellaneous fixes. - Automate generation of the initrd filesystem used for rcutorture testing. - Convert spin_is_locked() assertions to instead use lockdep. ( Note that some of these conversions are going upstream via their respective maintainers. ) - SRCU updates, especially including a fix from Dennis Krein for a bag-on-head-class bug. - RCU torture-test updates. Signed-off-by: Ingo Molnar <[email protected]>
2018-12-03selftests: extend zerocopy tests to udpWillem de Bruijn3-1/+7
Both msg_zerocopy and udpgso_bench have udp zerocopy variants. Exercise these as part of the standard kselftest run. With udp, msg_zerocopy has no control channel. Ensure that the receiver exits after the sender by accounting for the initial delay in starting them (in msg_zerocopy.sh). Signed-off-by: Willem de Bruijn <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-03test/net: Add script for VXLAN underlay in a VRFAlexis Bauvin2-1/+130
This script tests the support of a VXLAN underlay in a non-default VRF. It does so by simulating two hypervisors and two VMs, an extended L2 between the VMs with the hypervisors as VTEPs with the underlay in a VRF, and finally by pinging the two VMs. It also tests that moving the underlay from a VRF to another works when down/up the VXLAN interface. Signed-off-by: Alexis Bauvin <[email protected]> Reviewed-by: Amine Kherbouche <[email protected]> Reviewed-by: David Ahern <[email protected]> Tested-by: Amine Kherbouche <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-12-03bpf: allow BPF read access to qdisc pkt_lenPetar Penkov2-0/+33
The pkt_len field in qdisc_skb_cb stores the skb length as it will appear on the wire after segmentation. For byte accounting, this value is more accurate than skb->len. It is computed on entry to the TC layer, so only valid there. Allow read access to this field from BPF tc classifier and action programs. The implementation is analogous to tc_classid, aside from restricting to read access. To distinguish it from skb->len and self-describe export as wire_len. Changes v1->v2 - Rename pkt_len to wire_len Signed-off-by: Petar Penkov <[email protected]> Signed-off-by: Vlad Dumitrescu <[email protected]> Signed-off-by: Willem de Bruijn <[email protected]> Acked-by: Song Liu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-12-03libbpf: Fix license in README.rstAndrey Ignatov1-1/+1
The whole libbpf is licensed as (LGPL-2.1 OR BSD-2-Clause). I missed it while adding README.rst. Fix it and use same license as all other files in libbpf do. Since I'm the only author of README.rst so far, no others' permissions should be needed. Fixes: 76d1b894c515 ("libbpf: Document API and ABI conventions") Signed-off-by: Andrey Ignatov <[email protected]> Acked-by: Song Liu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-12-03Merge tag 'v4.20-rc5' into perf/core, to pick up fixesIngo Molnar28-48/+871
Signed-off-by: Ingo Molnar <[email protected]>
2018-12-03Merge 4.20-rc5 into char-misc-nextGreg Kroah-Hartman36-33/+937
We need the fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-03Merge 4.20-rc5 into staging-nextGreg Kroah-Hartman64-180/+1806
We need the staging fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-12-01Merge branches 'bug.2018.11.12a', 'consolidate.2018.12.01a', ↵Paul E. McKenney6-90/+2356
'doc.2018.11.12a', 'fixes.2018.11.12a', 'initrd.2018.11.08b', 'sil.2018.11.12a' and 'srcu.2018.11.27a' into HEAD bug.2018.11.12a: Get rid of BUG_ON() and friends consolidate.2018.12.01a: Continued RCU flavor-consolidation cleanup doc.2018.11.12a: Documentation updates fixes.2018.11.12a: Miscellaneous fixes initrd.2018.11.08b: Automate creation of rcutorture initrd sil.2018.11.12a: Remove more spin_unlock_wait() calls
2018-12-01rcutorture/formal: Replace synchronize_sched() with synchronize_rcu()Paul E. McKenney1-2/+2
Now that synchronize_rcu() waits for preempt-disable regions of code as well as RCU read-side critical sections, synchronize_sched() can be replaced by synchronize_rcu(). This commit therefore makes this change, even though it is but a comment. Signed-off-by: Paul E. McKenney <[email protected]>
2018-12-01tools/kernel.h: Replace synchronize_sched() with synchronize_rcu()Paul E. McKenney1-1/+1
Now that synchronize_rcu() waits for preempt-disable regions of code as well as RCU read-side critical sections, synchronize_sched() can be replaced by synchronize_rcu(). This commit therefore makes this change, even though it is but a comment. Signed-off-by: Paul E. McKenney <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: <[email protected]>
2018-12-01Merge branch 'x86-pti-for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull STIBP fallout fixes from Thomas Gleixner: "The performance destruction department finally got it's act together and came up with a cure for the STIPB regression: - Provide a command line option to control the spectre v2 user space mitigations. Default is either seccomp or prctl (if seccomp is disabled in Kconfig). prctl allows mitigation opt-in, seccomp enables the migitation for sandboxed processes. - Rework the code to handle the conditional STIBP/IBPB control and remove the now unused ptrace_may_access_sched() optimization attempt - Disable STIBP automatically when SMT is disabled - Optimize the switch_to() logic to avoid MSR writes and invocations of __switch_to_xtra(). - Make the asynchronous speculation TIF updates synchronous to prevent stale mitigation state. As a general cleanup this also makes retpoline directly depend on compiler support and removes the 'minimal retpoline' option which just pretended to provide some form of security while providing none" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits) x86/speculation: Provide IBPB always command line options x86/speculation: Add seccomp Spectre v2 user space protection mode x86/speculation: Enable prctl mode for spectre_v2_user x86/speculation: Add prctl() control for indirect branch speculation x86/speculation: Prepare arch_smt_update() for PRCTL mode x86/speculation: Prevent stale SPEC_CTRL msr content x86/speculation: Split out TIF update ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS x86/speculation: Prepare for conditional IBPB in switch_mm() x86/speculation: Avoid __switch_to_xtra() calls x86/process: Consolidate and simplify switch_to_xtra() code x86/speculation: Prepare for per task indirect branch speculation control x86/speculation: Add command line control for indirect branch speculation x86/speculation: Unify conditional spectre v2 print functions x86/speculataion: Mark command line parser data __initdata x86/speculation: Mark string arrays const correctly x86/speculation: Reorder the spec_v2 code x86/l1tf: Show actual SMT state x86/speculation: Rework SMT state change sched/smt: Expose sched_smt_present static key ...
2018-11-30bpf: Apply F_NEEDS_EFFICIENT_UNALIGNED_ACCESS to more ACCEPT test cases.David Miller1-0/+17
If a testcase has alignment problems but is expected to be ACCEPT, verify it using F_NEEDS_EFFICIENT_UNALIGNED_ACCESS too. Maybe in the future if we add some architecture specific code to elide the unaligned memory access warnings during the test, we can execute these as well. Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30bpf: Make more use of 'any' alignment in test_verifier.cDavid Miller1-0/+44
Use F_NEEDS_EFFICIENT_UNALIGNED_ACCESS in more tests where the expected result is REJECT. Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30bpf: Adjust F_NEEDS_EFFICIENT_UNALIGNED_ACCESS handling in test_verifier.cDavid Miller1-18/+24
Make it set the flag argument to bpf_verify_program() which will relax the alignment restrictions. Now all such test cases will go properly through the verifier even on inefficient unaligned access architectures. On inefficient unaligned access architectures do not try to run such programs, instead mark the test case as passing but annotate the result similarly to how it is done now in the presence of this flag. So, we get complete full coverage for all REJECT test cases, and at least verifier level coverage for ACCEPT test cases. Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30bpf: Add BPF_F_ANY_ALIGNMENT.David Miller5-8/+23
Often we want to write tests cases that check things like bad context offset accesses. And one way to do this is to use an odd offset on, for example, a 32-bit load. This unfortunately triggers the alignment checks first on platforms that do not set CONFIG_EFFICIENT_UNALIGNED_ACCESS. So the test case see the alignment failure rather than what it was testing for. It is often not completely possible to respect the original intention of the test, or even test the same exact thing, while solving the alignment issue. Another option could have been to check the alignment after the context and other validations are performed by the verifier, but that is a non-trivial change to the verifier. Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30bpf: Fix verifier log string check for bad alignment.David Miller1-1/+1
The message got changed a lot time ago. This was responsible for 36 test case failures on sparc64. Fixes: f1174f77b50c ("bpf/verifier: rework value tracking") Signed-off-by: David S. Miller <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30bpf: Improve socket lookup reuseport documentationJoe Stringer1-4/+4
Improve the wording around socket lookup for reuseport sockets, and ensure that both bpf.h headers are in sync. Signed-off-by: Joe Stringer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30bpf: Support sk lookup in netns with id 0Joe Stringer3-25/+36
David Ahern and Nicolas Dichtel report that the handling of the netns id 0 is incorrect for the BPF socket lookup helpers: rather than finding the netns with id 0, it is resolving to the current netns. This renders the netns_id 0 inaccessible. To fix this, adjust the API for the netns to treat all negative s32 values as a lookup in the current netns (including u64 values which when truncated to s32 become negative), while any values with a positive value in the signed 32-bit integer space would result in a lookup for a socket in the netns corresponding to that id. As before, if the netns with that ID does not exist, no socket will be found. Any netns outside of these ranges will fail to find a corresponding socket, as those values are reserved for future usage. Signed-off-by: Joe Stringer <[email protected]> Acked-by: Nicolas Dichtel <[email protected]> Acked-by: Joey Pabalinas <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30selftests: forwarding: Add VxLAN test with a VLAN-aware bridgeIdo Schimmel2-0/+800
The test is very similar to its VLAN-unaware counterpart (vxlan_bridge_1d.sh), but instead of using multiple VLAN-unaware bridges, a single VLAN-aware bridge is used with multiple VLANs. Signed-off-by: Ido Schimmel <[email protected]> Reviewed-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-11-30selftests: mlxsw: Add a test for VxLAN configuration with a VLAN-aware bridgeIdo Schimmel1-1/+203
Extend the existing VLAN-unaware tests with their VLAN-aware counterparts. This includes sanitization of invalid configuration and offload indication on the local route performing decapsulation and the FDB entries perform encapsulation. Signed-off-by: Ido Schimmel <[email protected]> Reviewed-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-11-30selftests: mlxsw: Consider VLAN-aware bridges as validIdo Schimmel1-1/+1
Previous patches add the ability to work with VLAN-aware bridges and VxLAN devices, so make sure such configuration no longer fails. Signed-off-by: Ido Schimmel <[email protected]> Reviewed-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-11-30bpf: fix pointer offsets in context for 32 bitDaniel Borkmann1-5/+12
Currently, pointer offsets in three BPF context structures are broken in two scenarios: i) 32 bit compiled applications running on 64 bit kernels, and ii) LLVM compiled BPF programs running on 32 bit kernels. The latter is due to BPF target machine being strictly 64 bit. So in each of the cases the offsets will mismatch in verifier when checking / rewriting context access. Fix this by providing a helper macro __bpf_md_ptr() that will enforce padding up to 64 bit and proper alignment, and for context access a macro bpf_ctx_range_ptr() which will cover full 64 bit member range on 32 bit archs. For flow_keys, we additionally need to force the size check to sizeof(__u64) as with other pointer types. Fixes: d58e468b1112 ("flow_dissector: implements flow dissector BPF hook") Fixes: 4f738adba30a ("bpf: create tcp_bpf_ulp allowing BPF to monitor socket TX/RX data") Fixes: 2dbb9b9e6df6 ("bpf: Introduce BPF_PROG_TYPE_SK_REUSEPORT") Reported-by: David S. Miller <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: David S. Miller <[email protected]> Tested-by: David S. Miller <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-11-30proc: fixup map_files test on armAlexey Dobriyan1-2/+7
https://bugs.linaro.org/show_bug.cgi?id=3782 Turns out arm doesn't permit mapping address 0, so try minimum virtual address instead. Link: http://lkml.kernel.org/r/20181113165446.GA28157@avx2 Signed-off-by: Alexey Dobriyan <[email protected]> Reported-by: Rafael David Tinoco <[email protected]> Tested-by: Rafael David Tinoco <[email protected]> Acked-by: Cyrill Gorcunov <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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