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2020-03-20selftests/powerpc: Add tm-signal-pagefault testGustavo Luiz Duarte3-1/+287
This test triggers a TM Bad Thing by raising a signal in transactional state and forcing a pagefault to happen in kernelspace when the kernel signal handling code first touches the user signal stack. This is inspired by the test tm-signal-context-force-tm but uses userfaultfd to make the test deterministic. While this test always triggers the bug in one run, I had to execute tm-signal-context-force-tm several times (the test runs 5000 times each execution) to trigger the same bug. tm-signal-context-force-tm is kept instead of replaced because, while this test is more reliable and triggers the same bug, tm-signal-context-force-tm has a better coverage, in the sense that by running the test several times it might trigger the pagefault and/or be preempted at different places. v3: skip test if userfaultfd is unavailable. Signed-off-by: Gustavo Luiz Duarte <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-03-20selftests/powerpc: Add a test of sigreturn vs VDSOMichael Ellerman3-1/+129
There's two different paths through the sigreturn code, depending on whether the VDSO is mapped or not. We recently discovered a bug in the unmapped case, because it's not commonly used these days. So add a test that sends itself a signal, then moves the VDSO, takes another signal and finally unmaps the VDSO before sending itself another signal. That tests the standard signal path, the code that handles the VDSO being moved, and also the signal path in the case where the VDSO is unmapped. Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2020-03-19selftest/ftrace: Fix function trigger test to handle trace not disabling the ↵Steven Rostedt (VMware)1-1/+1
tracer The ftrace selftest "ftrace - test for function traceon/off triggers" enables all events and reads the trace file. Now that the trace file does not disable tracing, and will attempt to continually read new data that is added, the selftest gets stuck reading the trace file. This is because the data added to the trace file will fill up quicker than the reading of it. By only enabling scheduling events, the read can keep up with the writes. Instead of enabling all events, only enable the scheduler events. Link: http://lkml.kernel.org/r/[email protected] Cc: Shuah Khan <[email protected]> Cc: [email protected] Acked-by: Masami Hiramatsu <[email protected]> Signed-off-by: Steven Rostedt (VMware) <[email protected]>
2020-03-19binderfs: add stress test for binderfs binder devicesChristian Brauner2-94/+334
This adds a stress test that should hopefully help us catch regressions for [1], [2], and [3]. [1]: 2669b8b0c798 ("binder: prevent UAF for binderfs devices") [2]: f0fe2c0f050d ("binder: prevent UAF for binderfs devices II") [3]: 211b64e4b5b6 ("binderfs: use refcount for binder control devices too") Signed-off-by: Christian Brauner <[email protected]> Reviewed-by: Kees Cook <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-03-19binderfs_test: switch from /dev to a unique per-test mountpointChristian Brauner1-24/+23
Unprivileged users will be able to create directories in there. The unprivileged test for /dev wouldn't have worked on most systems. Signed-off-by: Christian Brauner <[email protected]> Reviewed-by: Kees Cook <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-03-19binderfs: port tests to test harness infrastructureChristian Brauner2-16/+17
Makes for nicer output and prepares for additional tests. Signed-off-by: Christian Brauner <[email protected]> Reviewed-by: Kees Cook <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-03-18wireguard: noise: error out precomputed DH during handshake rather than configJason A. Donenfeld1-5/+10
We precompute the static-static ECDH during configuration time, in order to save an expensive computation later when receiving network packets. However, not all ECDH computations yield a contributory result. Prior, we were just not letting those peers be added to the interface. However, this creates a strange inconsistency, since it was still possible to add other weird points, like a valid public key plus a low-order point, and, like points that result in zeros, a handshake would not complete. In order to make the behavior more uniform and less surprising, simply allow all peers to be added. Then, we'll error out later when doing the crypto if there's an issue. This also adds more separation between the crypto layer and the configuration layer. Discussed-with: Mathias Hall-Andersen <[email protected]> Signed-off-by: Jason A. Donenfeld <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-18wireguard: selftests: test using new 64-bit time_tJason A. Donenfeld2-2/+1
In case this helps expose bugs with the newer 64-bit time_t types, we do our testing with the newer musl that supports this as well as CONFIG_COMPAT_32BIT_TIME=n. This matters to us, since wireguard does in fact deal with timestamps. Signed-off-by: Jason A. Donenfeld <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-18wireguard: selftests: remove duplicated include <sys/types.h>YueHaibing1-1/+0
This commit removes a duplicated include. Signed-off-by: YueHaibing <[email protected]> Signed-off-by: Jason A. Donenfeld <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-18selftests: mlxsw: Add tc action hw_stats testsJiri Pirko2-0/+139
Add tests for mlxsw hw_stats types. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-18selftests: spectrum-2: Adjust tc_flower_scale limit according to current ↵Jiri Pirko1-2/+2
counter count With the change that made the code to query counter bank size from device instead of using hard-coded value, the number of available counters changed for Spectrum-2. Adjust the limit in the selftests. Signed-off-by: Jiri Pirko <[email protected]> Signed-off-by: Ido Schimmel <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-18KVM: selftests: Rework timespec functions and usageAndrew Jones4-44/+35
The steal_time test's timespec stop condition was wrong and should have used the timespec functions instead to avoid being wrong, but timespec_diff had a strange interface. Rework all the timespec API and its use. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-17selftests/bpf: Reset process and thread affinity after each test/sub-testAndrii Nakryiko2-1/+42
Some tests and sub-tests are setting "custom" thread/process affinity and don't reset it back. Instead of requiring each test to undo all this, ensure that thread affinity is restored by test_progs test runner itself. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-17selftests/bpf: Fix test_progs's parsing of test numbersAndrii Nakryiko1-6/+7
When specifying disjoint set of tests, test_progs doesn't set skipped test's array elements to false. This leads to spurious execution of tests that should have been skipped. Fix it by explicitly initializing them to false. Fixes: 3a516a0a3a7b ("selftests/bpf: add sub-tests support for test_progs") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-17selftests/bpf: Fix race in tcp_rtt testAndrii Nakryiko1-2/+2
Previous attempt to make tcp_rtt more robust introduced a new race, in which server_done might be set to true before server can actually accept any connection. Fix this by unconditionally waiting for accept(). Given socket is non-blocking, if there are any problems with client side, it should eventually close listening FD and let server thread exit with failure. Fixes: 4cd729fa022c ("selftests/bpf: Make tcp_rtt test more robust to failures") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-17selftests/bpf: Fix nanosleep for real this timeAndrii Nakryiko2-11/+7
Amazingly, some libc implementations don't call __NR_nanosleep syscall from their nanosleep() APIs. Hammer it down with explicit syscall() call and never get back to it again. Also simplify code for timespec initialization. I verified that nanosleep is called w/ printk and in exactly same Linux image that is used in Travis CI. So it should both sleep and call correct syscall. v1->v2: - math is too hard, fix usec -> nsec convertion (Martin); - test_vmlinux has explicit nanosleep() call, convert that one as well. Fixes: 4e1fd25d19e8 ("selftests/bpf: Fix usleep() implementation") Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-17selftest/bpf: Fix compilation warning in sockmap_parse_prog.cAndrii Nakryiko1-1/+0
Remove unused len variable, which causes compilation warnings. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Acked-by: Martin KaFai Lau <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
2020-03-17selftests/powerpc: Add tlbie_test in .gitignoreChristophe Leroy1-0/+1
The commit identified below added tlbie_test but forgot to add it in .gitignore. Fixes: 93cad5f78995 ("selftests/powerpc: Add test case for tlbie vs mtpidr ordering issue") Cc: [email protected] # v5.4+ Signed-off-by: Christophe Leroy <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/259f9c06ed4563c4fa4fa8ffa652347278d769e7.1582847784.git.christophe.leroy@c-s.fr
2020-03-16Merge tag 'kvm-s390-next-5.7-1' of ↵Paolo Bonzini1-0/+11
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390: Features and Enhancements for 5.7 part1 1. Allow to disable gisa 2. protected virtual machines Protected VMs (PVM) are KVM VMs, where KVM can't access the VM's state like guest memory and guest registers anymore. Instead the PVMs are mostly managed by a new entity called Ultravisor (UV), which provides an API, so KVM and the PV can request management actions. PVMs are encrypted at rest and protected from hypervisor access while running. They switch from a normal operation into protected mode, so we can still use the standard boot process to load a encrypted blob and then move it into protected mode. Rebooting is only possible by passing through the unprotected/normal mode and switching to protected again. One mm related patch will go via Andrews mm tree ( mm/gup/writeback: add callbacks for inaccessible pages)
2020-03-16KVM: selftests: enlightened VMPTRLD with an incorrect GPAVitaly Kuznetsov1-2/+10
Check that guest doesn't hang when an invalid eVMCS GPA is specified. Testing that #UD is injected would probably be better but selftests lack the infrastructure currently. Signed-off-by: Vitaly Kuznetsov <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: test enlightened vmenter with wrong eVMCS versionVitaly Kuznetsov1-4/+9
Check that VMfailInvalid happens when eVMCS revision is is invalid. Signed-off-by: Vitaly Kuznetsov <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: define and use EVMCS_VERSIONVitaly Kuznetsov2-1/+3
KVM allows to use revision_id from MSR_IA32_VMX_BASIC as eVMCS revision_id to workaround a bug in genuine Hyper-V (see the comment in nested_vmx_handle_enlightened_vmptrld()), this shouldn't be used by default. Switch to using KVM_EVMCS_VERSION(1). Signed-off-by: Vitaly Kuznetsov <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: kvm: Uses TEST_FAIL in tests/utilitiesWainer dos Santos Moschetta13-53/+46
Changed all tests and utilities to use TEST_FAIL macro instead of TEST_ASSERT(false,...). Signed-off-by: Wainer dos Santos Moschetta <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: kvm: Introduce the TEST_FAIL macroWainer dos Santos Moschetta1-0/+3
Some tests/utilities use the TEST_ASSERT(false, ...) pattern to indicate a failure and stop execution. This change introduces the TEST_FAIL macro which is a wrap around TEST_ASSERT(false, ...) and so provides a direct alternative for failing a test. Signed-off-by: Wainer dos Santos Moschetta <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: KVM: s390: check for registers to NOT change on resetChristian Borntraeger1-2/+53
Normal reset and initial CPU reset do not clear all registers. Add a test that those registers are NOT changed. Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: KVM: s390: test more register variants for the reset ioctlChristian Borntraeger1-9/+41
We should not only test the oneregs or the get_(x)regs interfaces but also the sync_regs. Those are usually the canonical place for register content. Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: KVM: s390: fix early guest crashChristian Borntraeger1-14/+13
The guest crashes very early due to changes in the control registers used by dynamic address translation. Let us use different registers that will not crash the guest. Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Introduce steal-time testAndrew Jones7-5/+385
The steal-time test confirms what is reported to the guest as stolen time is consistent with the run_delay reported for the VCPU thread on the host. Both x86_64 and AArch64 have the concept of steal/stolen time so this test is introduced for both architectures. While adding the test we ensure .gitignore has all tests listed (it was missing s390x/resets) and that the Makefile has all tests listed in alphabetical order (not really necessary, but it almost was already...). We also extend the common API with a new num-guest- pages call and a new timespec call. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: virt_map should take npages, not sizeAndrew Jones6-19/+16
Also correct the comment and prototype for vm_create_default(), as it takes a number of pages, not a size. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Use consistent message for test skippingAndrew Jones18-25/+37
Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Enable printf format warnings for TEST_ASSERTAndrew Jones10-17/+16
Use the format attribute to enable printf format warnings, and then fix them all. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: KVM: s390: fix format strings for access reg testChristian Borntraeger1-2/+9
acrs are 32 bit and not 64 bit. Reported-by: Andrew Jones <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: KVM: s390: fixup fprintf format error in reset.cChristian Borntraeger1-1/+1
value is u64 and not string. Reported-by: Andrew Jones <[email protected]> Signed-off-by: Christian Borntraeger <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Share common API documentationAndrew Jones5-248/+187
Move function documentation comment blocks to the header files in order to avoid duplicating them for each architecture. While at it clean up and fix up the comment blocks. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16selftests: KVM: SVM: Add vmcall test to gitignoreAndrew Jones1-2/+3
Add svm_vmcall_test to gitignore list, and realphabetize it. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: s390x: Provide additional num-guest-pages adjustmentAndrew Jones3-9/+8
s390 requires 1M aligned guest sizes. Embedding the rounding in vm_adjust_num_guest_pages() allows us to remove it from a few other places. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16kvm: selftests: Support dirty log initial-all-set testJay Zhou2-3/+16
Since the new capability KVM_DIRTY_LOG_INITIALLY_SET of KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 has been introduced, tweak the clear_dirty_log_test to use it. Signed-off-by: Jay Zhou <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Fix unknown ucall command assertsAndrew Jones7-8/+7
The TEST_ASSERT in x86_64/platform_info_test.c would have print 'ucall' instead of 'uc.cmd'. Also fix all uc.cmd format types. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add test for KVM_SET_USER_MEMORY_REGIONSean Christopherson5-0/+175
Add a KVM selftest to test moving the base gfn of a userspace memory region. Although the basic concept of moving memory regions is not x86 specific, the assumptions regarding large pages and MMIO shenanigans used to verify the correctness make this x86_64 only for the time being. Reviewed-by: Peter Xu <[email protected]> Signed-off-by: Sean Christopherson <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Convert some printf's to pr_info'sAndrew Jones7-13/+13
We leave some printf's because they inform the user the test is being skipped. QUIET should not disable those. We also leave the printf's used for help text. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Rework debug message printingAndrew Jones6-44/+54
There were a few problems with the way we output "debug" messages. The first is that we used DEBUG() which is defined when NDEBUG is not defined, but NDEBUG will never be defined for kselftests because it relies too much on assert(). The next is that most of the DEBUG() messages were actually "info" messages, which users may want to turn off if they just want a silent test that either completes or asserts. Finally, a debug message output from a library function, and thus for all tests, was annoying when its information wasn't interesting for a test. Rework these messages so debug messages only output when DEBUG is defined and info messages output unless QUIET is defined. Also name the functions pr_debug and pr_info and make sure that when they're disabled we eat all the inputs. The later avoids unused variable warnings when the variables were only defined for the purpose of printing. Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Time guest demand pagingBen Gardon3-1/+72
In order to quantify demand paging performance, time guest execution during demand paging. Signed-off-by: Ben Gardon <[email protected]> [Move timespec-diff to test_util.h] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Support multiple vCPUs in demand paging testBen Gardon1-82/+171
Most VMs have multiple vCPUs, the concurrent execution of which has a substantial impact on demand paging performance. Add an option to create multiple vCPUs to each access disjoint regions of memory. Signed-off-by: Ben Gardon <[email protected]> [guest_code() can't return, use GUEST_ASSERT(). Ensure the number of guests pages is compatible with the host.] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add support for vcpu_args_set to aarch64 and s390xBen Gardon2-0/+71
Currently vcpu_args_set is only implemented for x86. This makes writing tests with multiple vCPUs difficult as each guest vCPU must either a.) do the same thing or b.) derive some kind of unique token from it's registers or the architecture. To simplify the process of writing tests with multiple vCPUs for s390 and aarch64, add set args functions for those architectures. Signed-off-by: Ben Gardon <[email protected]> [Fixed array index (num => i) and made some style changes.] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Pass args to vCPU in global vCPU args structBen Gardon1-11/+27
In preparation for supporting multiple vCPUs in the demand paging test, pass arguments to the vCPU in a consolidated global struct instead of syncing multiple globals. Signed-off-by: Ben Gardon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add memory size parameter to the demand paging testBen Gardon4-22/+90
Add an argument to allow the demand paging test to work on larger and smaller guest sizes. Signed-off-by: Ben Gardon <[email protected]> [Rewrote parse_size() to simplify and provide user more flexibility as to how sizes are input. Also fixed size overflow assert.] Signed-off-by: Andrew Jones <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add configurable demand paging delayBen Gardon1-7/+25
When running the demand paging test with the -u option, the User Fault FD handler essentially adds an arbitrary delay to page fault resolution. To enable better simulation of a real demand paging scenario, add a configurable delay to the UFFD handler. Reviewed-by: Peter Xu <[email protected]> Signed-off-by: Ben Gardon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-16KVM: selftests: Add demand paging content to the demand paging testBen Gardon1-4/+206
The demand paging test is currently a simple page access test which, while potentially useful, doesn't add much versus the existing dirty logging test. To improve the demand paging test, add a basic userfaultfd demand paging implementation. Signed-off-by: Ben Gardon <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
2020-03-14selftests: mlxsw: RED: Test RED ECN nodrop offloadPetr Machata3-8/+61
Extend RED testsuite to cover the new nodrop mode of RED-ECN. This test is really similar to ECN test, diverging only in the last step, where UDP traffic should go to backlog instead of being dropped. Thus extract a common helper, ecn_test_common(), make do_ecn_test() into a relatively simple wrapper, and add another one, do_ecn_nodrop_test(). Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2020-03-14selftests: qdiscs: RED: Add nodrop testsPetr Machata1-0/+68
Add tests for the new "nodrop" flag. Signed-off-by: Petr Machata <[email protected]> Signed-off-by: David S. Miller <[email protected]>
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