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2018-03-04Merge branch 'x86-pti-for-linus' of ↵Linus Torvalds1-1/+5
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86/pti fixes from Thomas Gleixner: "Three fixes related to melted spectrum: - Sync the cpu_entry_area page table to initial_page_table on 32 bit. Otherwise suspend/resume fails because resume uses initial_page_table and triggers a triple fault when accessing the cpu entry area. - Zero the SPEC_CTL MRS on XEN before suspend to address a shortcoming in the hypervisor. - Fix another switch table detection issue in objtool" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table objtool: Fix another switch table detection issue x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend
2018-03-04tools: tc-testing: Add notap optionBrenda J. Butler1-11/+23
Add a command line arg to suppress tap output. Handy in case all the tap output is being supplied by the plugins. Signed-off-by: Brenda J. Butler <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-04selftests: forwarding: Add multipath test for L4 hashingDavid Ahern1-0/+44
Add IPv6 multipath test using L4 hashing. Created with inputs from Ido Schimmel. Signed-off-by: David Ahern <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Tested-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller19-361/+1253
Daniel Borkmann says: ==================== pull-request: bpf-next 2018-03-03 The following pull-request contains BPF updates for your *net-next* tree. The main changes are: 1) Extend bpftool to build up CFG information of eBPF programs and add an option to dump this in DOT format such that this can later be used with DOT graphic tools (xdot, graphviz, etc) to visualize it. Part of the analysis performed is sub-program detection and basic-block partitioning, from Jiong. 2) Multiple enhancements for bpftool's batch mode, more specifically the parser now understands comments (#), continuation lines (\), and arguments enclosed between quotes. Also, allow to read from stdin via '-' as input file, all from Quentin. 3) Improve BPF kselftests by i) unifying the rlimit handling into a helper that is then used by all tests, and ii) add support for testing tail calls to test_verifier plus add tests covering all corner cases. The latter is especially useful for testing JITs, from Daniel. 4) Remove x64 JIT's bpf_flush_icache() since flush_icache_range() is a noop on x64, from Daniel. 5) Fix one more occasion in BPF samples where we do not detach the BPF program from the cgroup after completion, from Prashant. ==================== Signed-off-by: David S. Miller <[email protected]>
2018-03-02selftests: memory-hotplug: fix emit_tests regressionShuah Khan1-1/+2
Commit 16c513b13477 ("selftests: memory-hotplug: silence test command echo") introduced regression in emit_tests and results in the following failure when selftests are installed and run. Fix it. Running tests in memory-hotplug ======================================== ./run_kselftest.sh: line 121: @./mem-on-off-test.sh: No such file or directory selftests: memory-hotplug [FAIL] Fixes: 16c513b13477 (selftests: memory-hotplug: silence test command echo") Reported-by: Naresh Kamboju <[email protected]> Tested-by: Anders Roxell <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2018-03-02tools: bpftool: add support for quotations in batch filesQuentin Monnet1-14/+51
Improve argument parsing from batch input files in order to support arguments enclosed between single (') or double quotes ("). For example, this command can now be parsed in batch mode: bpftool prog dump xlated id 1337 file "/tmp/my file with spaces" The function responsible for parsing command arguments is copied from its counterpart in lib/utils.c in iproute2 package. Signed-off-by: Quentin Monnet <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-03-02tools: bpftool: read from stdin when batch file name is "-"Quentin Monnet1-2/+6
Make bpftool read its command list from standard input when the name if the input file is a single dash. Signed-off-by: Quentin Monnet <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-03-02tools: bpftool: support continuation lines in batch filesQuentin Monnet1-4/+32
Add support for continuation lines, such as in the following example: prog show prog dump xlated \ id 1337 opcodes This patch is based after the code for support for continuation lines from file lib/utils.c from package iproute2. "Lines" in error messages are renamed as "commands", as we count the number of commands (but we ignore empty lines, comments, and do not add continuation lines to the count). Signed-off-by: Quentin Monnet <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-03-02tools: bpftool: support comments in batch filesQuentin Monnet1-0/+5
Replace '#' by '\0' in commands read from batch files in order to avoid processing the remaining part of the line, thus allowing users to use comments in the files. Signed-off-by: Quentin Monnet <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]>
2018-03-01Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller1-0/+58
Daniel Borkmann says: ==================== pull-request: bpf 2018-02-28 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Add schedule points and reduce the number of loop iterations the test_bpf kernel module is performing in order to not hog the CPU for too long, from Eric. 2) Fix an out of bounds access in tail calls in the ppc64 BPF JIT compiler, from Daniel. 3) Fix a crash on arm64 on unaligned BPF xadd operations that could be triggered via interpreter and JIT, from Daniel. Please not that once you merge net into net-next at some point, there is a minor merge conflict in test_verifier.c since test cases had been added at the end in both trees. Resolution is trivial: keep all the test cases from both trees. ==================== Signed-off-by: David S. Miller <[email protected]>
2018-03-01tools: bpftool: add bash completion for CFG dumpQuentin Monnet1-4/+9
Add bash completion for the "visual" keyword used for dumping the CFG of eBPF programs with bpftool. Make sure we only complete with this keyword when we dump "xlated" (and not "jited") instructions. Acked-by: Jiong Wang <[email protected]> Signed-off-by: Quentin Monnet <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01tools: bpftool: new command-line option and documentation for 'visual'Jiong Wang2-7/+23
This patch adds new command-line option for visualizing the xlated eBPF sequence. Documentations are updated accordingly. Usage: bpftool prog dump xlated id 2 visual Reviewed-by: Quentin Monnet <[email protected]> Signed-off-by: Jiong Wang <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01tools: bpftool: generate .dot graph from CFG informationJiong Wang3-0/+147
This patch let bpftool print .dot graph file into stdout. This graph is generated by the following steps: - iterate through the function list. - generate basic-block(BB) definition for each BB in the function. - draw out edges to connect BBs. This patch is the initial support, the layout and decoration of the .dot graph could be improved. Also, it will be useful if we could visualize some performance data from static analysis. Signed-off-by: Jiong Wang <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01tools: bpftool: add out edges for each basic-blockJiong Wang1-2/+160
This patch adds out edges for each basic-block. We will need these out edges to finish the .dot graph drawing. Signed-off-by: Jiong Wang <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01tools: bpftool: partition basic-block for each function in the CFGJiong Wang1-1/+117
This patch partition basic-block for each function in the CFG. The algorithm is simple, we identify basic-block head in a first traversal, then second traversal to identify the tail. We could build extended basic-block (EBB) in next steps. EBB could make the graph more readable when the eBPF sequence is big. Signed-off-by: Jiong Wang <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01tools: bpftool: detect sub-programs from the eBPF sequenceJiong Wang2-0/+190
This patch detect all sub-programs from the eBPF sequence and keep the information in the new CFG data structure. The detection algorithm is basically the same as the one in verifier except we need to use insn->off instead of insn->imm to get the pc-relative call offset. Because verifier has modified insn->off/insn->imm during finishing the verification. Also, we don't need to do some sanity checks as verifier has done them. Signed-off-by: Jiong Wang <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01tools: bpftool: factor out xlated dump related code into separate fileJiong Wang3-254/+349
This patch factors out those code of dumping xlated eBPF instructions into xlated_dumper.[h|c]. They are quite independent dumper functions, so better to be kept separately. New dumper support will be added in later patches in this set. Signed-off-by: Jiong Wang <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01tools: bpftool: remove unnecessary 'if' to reduce indentationJiong Wang1-20/+18
It is obvious we could use 'else if' instead of start a new 'if' in the touched code. Signed-off-by: Jiong Wang <[email protected]> Acked-by: Jakub Kicinski <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-03-01selftests: forwarding: Add description to the multipath testsDavid Ahern1-17/+20
Add a better description to the summary for multipath tests. e.g., INFO: Running IPv6 multipath tests TEST: ECMP [PASS] INFO: Expected ratio 1.00 Measured ratio 1.02 TEST: Weighted MP 2:1 [PASS] INFO: Expected ratio 2.00 Measured ratio 2.02 TEST: Weighted MP 11:45 [PASS] INFO: Expected ratio 4.09 Measured ratio 4.03 Signed-off-by: David Ahern <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-01selftests: forwarding: Use PING6 instead of ping for ipv6 multipath testDavid Ahern1-1/+1
On Debian jessie ping can not handle IPv6 addresses so the command fails. Use PING6 which is set to ping6. Signed-off-by: David Ahern <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-01selftests: forwarding: Handle 0 for packet difference in multipath testsDavid Ahern1-0/+7
If the packet stats have a difference of 0, the test output shows: INFO: Expected ratio 2.00 Measured ratio Runtime error (func=(main), adr=9): Divide by zero (standard_in) 2: syntax error (standard_in) 1: syntax error ./router_multipath.sh: line 187: test: : integer expression expected TEST: Multipath [FAIL] Too large discrepancy between expected and measured ratios Handle the 0 and display a cleaner message: INFO: Running IPv6 multipath tests TEST: Multipath [FAIL] Packet difference is 0 Signed-off-by: David Ahern <[email protected]> Reviewed-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-01selftests: forwarding: Only check tc version for tc testsDavid Ahern7-15/+25
Capabilities of tc command are irrelevant for router tests: $ ./router.sh SKIP: iproute2 too old, missing shared block support Add a CHECK_TC flag and only check tc capabilities if set. Add flag to tc_common.sh and have it sourced before lib.sh Also, if the command lacks some feature the test should exit non-0. Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-03-02selftests/powerpc: Skip the subpage_prot tests if the syscall is unavailableMichael Ellerman1-0/+14
The subpage_prot syscall is only functional when the system is using the Hash MMU. Since commit 5b2b80714796 ("powerpc/mm: Invalidate subpage_prot() system call on radix platforms") it returns ENOENT when the Radix MMU is active. Currently this just makes the test fail. Additionally the syscall is not available if the kernel is built with 4K pages, or if CONFIG_PPC_SUBPAGE_PROT=n, in which case it returns ENOSYS because the syscall is missing entirely. So check explicitly for ENOENT and ENOSYS and skip if we see either of those. Signed-off-by: Michael Ellerman <[email protected]>
2018-02-28Merge tag 'linux-kselftest-4.16-rc4' of ↵Linus Torvalds8-16/+19
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fixes from Shuah Khan: "Fixes for various problems in test output, compile errors, and missing configs" * tag 'linux-kselftest-4.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: vm: update .gitignore with new test selftests: memory-hotplug: silence test command echo selftests/futex: Fix line continuation in Makefile selftests: memfd: add config fragment for fuse selftests: pstore: Adding config fragment CONFIG_PSTORE_RAM=m selftests/android: Fix line continuation in Makefile selftest/vDSO: fix O= selftests: sync: missing CFLAGS while compiling
2018-02-28selftests: forwarding: Introduce basic shared blocks testsJiri Pirko2-0/+128
Test shared block infrastructure. This is a basic test that shares TC block in between 2 clsact qdiscs. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Introduce basic tc chains testsJiri Pirko1-0/+122
Tests chains matching and goto chain action. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Introduce tc actions testsJiri Pirko1-0/+195
Add first part of actions tests. This patch only contains tests of gact ok/drop/trap and mirred redirect egress. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Introduce tc flower matching testsJiri Pirko2-0/+219
Add first part of flower tests. This patch only contains dst/src ip/mac matching. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Allow to get netdev interfaces names from commandlineJiri Pirko1-0/+15
Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Add MAC get helperJiri Pirko1-0/+7
Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Add tc offload check helperJiri Pirko1-0/+13
Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Test IPv6 weighted nexthopsIdo Schimmel1-0/+36
Have one host generate 16K IPv6 echo requests with a random flow label and check that they are distributed between both multipath links according to the provided weights. Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Test IPv4 weighted nexthopsIdo Schimmel2-0/+91
Use different weights for the multipath route configured on the first router and check that the different flows generated by the first host are distributed according to the provided weights. Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Create test topology for multipath routingIdo Schimmel1-0/+209
Create a topology with two hosts, each directly connected to a different router. Both routers are connected using two links, enabling multipath routing. Test IPv4 and IPv6 ping using default MTU and large MTU. Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Add a test for basic IPv4 and IPv6 routingIdo Schimmel2-0/+140
Configure two hosts which are directly connected to the same router and test IPv4 and IPv6 ping. Use a large MTU and check that ping is unaffected. Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Add a test for flooded trafficIdo Schimmel2-0/+90
Add test cases for unknown unicast and unregistered multicast flooding. For each traffic type, turn off flooding on one bridged port and inject a packet of the specified type through the second bridged port. Make sure the packet was not received by checking the ACL counters on the other end. Later, turn on flooding and make sure the packet was received. Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Add a test for FDB learningIdo Schimmel2-1/+96
Send a packet with a specific destination MAC, make sure it was learned on the ingress port and then aged-out. Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28selftests: forwarding: Add initial testing frameworkIdo Schimmel6-0/+465
Add initial framework to test packet forwarding functionality. The tests can run on actual devices using loop-backed cables or using veth pairs. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-28objtool: Fix another switch table detection issueJosh Poimboeuf1-1/+5
Continue the switch table detection whack-a-mole. Add a check to distinguish KASAN data reads from switch data reads. The switch jump tables in .rodata have relocations associated with them. This fixes the following warning: crypto/asymmetric_keys/x509_cert_parser.o: warning: objtool: x509_note_pkey_algo()+0xa4: sibling call from callable instruction with modified stack frame Reported-by: Arnd Bergmann <[email protected]> Signed-off-by: Josh Poimboeuf <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Arnd Bergmann <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: https://lkml.kernel.org/r/d7c8853022ad47d158cb81e953a40469fc08a95e.1519784382.git.jpoimboe@redhat.com
2018-02-28selftests/powerpc: Fix missing clean of pmu/lib.oMichael Ellerman1-1/+1
The tm-resched-dscr test links against pmu/lib.o, but we don't have a rule to clean pmu/lib.o. This can lead to a build break if you build for big endian and then little, or vice versa. Fix it by making tm-resched-dscr depend on pmu/lib.c, causing the code to be built directly in, meaning no .o is generated. Signed-off-by: Michael Ellerman <[email protected]>
2018-02-27selftests/net: reap zerocopy completions passed up as ancillary data.Sowmini Varadhan1-8/+57
PF_RDS sockets pass up cookies for zerocopy completion as ancillary data. Update msg_zerocopy to reap this information. Signed-off-by: Sowmini Varadhan <[email protected]> Acked-by: Willem de Bruijn <[email protected]> Acked-by: Santosh Shilimkar <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-27selftests/net: revert the zerocopy Rx path for PF_RDSSowmini Varadhan1-67/+0
In preparation for optimized reception of zerocopy completion, revert the Rx side changes introduced by Commit dfb8434b0a94 ("selftests/net: add zerocopy support for PF_RDS test case") Signed-off-by: Sowmini Varadhan <[email protected]> Acked-by: Willem de Bruijn <[email protected]> Acked-by: Santosh Shilimkar <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-27selftests: Add fib-onlink-tests.sh to TEST_PROGSDavid Ahern1-1/+1
Fixes: 153e1b84f477 ("selftests: Add FIB onlink tests") Reported-by: Ido Schimmel <[email protected]> Signed-off-by: David Ahern <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2018-02-26bpf: add tail call tests to test_verifierDaniel Borkmann1-7/+110
One of the downsides of the test_bpf module was that since being in kernel space, it couldn't test-run tail calls. Now that the test_verifier has the ability to perform run-time tests, populate the prog array so we actually jump into other BPF programs and can check all corner cases. Most useful in combination with JITs. Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-02-26bpf: unify rlimit handling in selftestsDaniel Borkmann11-54/+44
Unify memlock handling into bpf_rlimit.h and replace all occurences in BPF kselftests with it. Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Alexei Starovoitov <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
2018-02-26selftests: vm: update .gitignore with new testShuah Khan1-0/+1
Update .gitignore with new test. Signed-off-by: Shuah Khan <[email protected]>
2018-02-26selftests: memory-hotplug: silence test command echoShuah Khan1-1/+1
Silence the following command being printed while running test. ./mem-on-off-test.sh -r 2 && echo "selftests: memory-hotplug [PASS]" || echo "selftests: memory-hotplug [FAIL]" Signed-off-by: Shuah Khan <[email protected]>
2018-02-26selftests/futex: Fix line continuation in MakefileDaniel Díaz1-3/+3
The Makefile lacks a couple of line continuation backslashes in an `if' clause, which produces an error when make versions prior to 4.x are used for building the tests. $ make make[1]: Entering directory `/[...]/linux/tools/testing/selftests/futex' /bin/sh: -c: line 5: syntax error: unexpected end of file make[1]: *** [all] Error 1 make[1]: Leaving directory `/[...]/linux/tools/testing/selftests/futex' make: *** [all] Error 2 Signed-off-by: Daniel Díaz <[email protected]> Signed-off-by: Shuah Khan <[email protected]>
2018-02-26Merge branch 'idr-2018-02-06' of git://git.infradead.org/users/willy/linux-daxLinus Torvalds5-2/+68
Pull idr fixes from Matthew Wilcox: "One test-suite build fix for you and one run-time regression fix. The regression fix includes new tests to make sure they don't pop back up." * 'idr-2018-02-06' of git://git.infradead.org/users/willy/linux-dax: idr: Fix handling of IDs above INT_MAX radix tree test suite: Fix build
2018-02-26idr: Fix handling of IDs above INT_MAXMatthew Wilcox1-0/+52
Khalid reported that the kernel selftests are currently failing: selftests: test_bpf.sh ======================================== test_bpf: [FAIL] not ok 1..8 selftests: test_bpf.sh [FAIL] He bisected it to 6ce711f2750031d12cec91384ac5cfa0a485b60a ("idr: Make 1-based IDRs more efficient"). The root cause is doing a signed comparison in idr_alloc_u32() instead of an unsigned comparison. I went looking for any similar problems and found a couple (which would each result in the failure to warn in two situations that aren't supposed to happen). I knocked up a few test-cases to prove that I was right and added them to the test-suite. Reported-by: Khalid Aziz <[email protected]> Tested-by: Khalid Aziz <[email protected]> Signed-off-by: Matthew Wilcox <[email protected]>
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