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2020-03-06Get strings for stack.DHCPv6ConfigurationFromNDPRAGhanan Gowripalan
Useful for logs to print the string representation of the value instead of the integer value. PiperOrigin-RevId: 299356847
2020-03-05Stub oom_score_adj and oom_score.Ian Lewis
Adds an oom_score_adj and oom_score proc file stub. oom_score_adj accepts writes of values -1000 to 1000 and persists the value with the task. New tasks inherit the parent's oom_score_adj. oom_score is a read-only stub that always returns the value '0'. Issue #202 PiperOrigin-RevId: 299245355
2020-03-05Fix S/R on inet.Namespace.Ting-Yu Wang
PiperOrigin-RevId: 299238067
2020-03-05Merge pull request #1951 from moricho:moricho/add-profiler-optiongVisor bot
PiperOrigin-RevId: 299233818
2020-03-05Use a pool of arrays to avoid slice headers from escaping in TCP options pool.Ian Gudger
By putting slices into the pool, the slice header escapes. This can be avoided by not putting the slice header into the pool. This removes an allocation from the TCP segment send path. PiperOrigin-RevId: 299215480
2020-03-05tests: Don't print log messages on stdoutAndrei Vagin
A parser of test results doesn't expect to see any extra messages. PiperOrigin-RevId: 299174138
2020-03-05Merge pull request #2036 from xiaobo55x:syscall_testgVisor bot
PiperOrigin-RevId: 299151227
2020-03-04tests: Don't print log messages on stdoutAndrei Vagin
A parser of test results doesn't expect to see any extra messages. PiperOrigin-RevId: 298966577
2020-03-04Merge pull request #2054 from avagin:gvisor-testgVisor bot
PiperOrigin-RevId: 298951909
2020-03-04Ensure that safemem.BlockSeqOf(safemem.Block{}) produces an empty BlockSeq.Jamie Liu
PiperOrigin-RevId: 298941855
2020-03-04test/runner: use proper filters for test casesAndrei Vagin
The benchmark_filter options accepts regex-s, but the gtest-filter option accepts shell-like wildcards. Fixes #2034 Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-03-04Merge pull request #2031 from ↵gVisor bot
google:dependabot/bundler/benchmarks/workloads/ruby/rake-12.3.3 PiperOrigin-RevId: 298894164
2020-03-04Use shuf instead of $RANDOM everywhere.Eyal Soha
$RANDOM can cause collisions but shuf uses /dev/urandom so it ought to cause fewer. PiperOrigin-RevId: 298786344
2020-03-03Merge pull request #2009 from lubinszARM:pr_syscall_getresgVisor bot
PiperOrigin-RevId: 298740246
2020-03-04Bump rake from 12.3.2 to 12.3.3 in /benchmarks/workloads/rubydependabot[bot]
Bumps [rake](https://github.com/ruby/rake) from 12.3.2 to 12.3.3. - [Release notes](https://github.com/ruby/rake/releases) - [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc) - [Commits](https://github.com/ruby/rake/compare/v12.3.2...v12.3.3) Signed-off-by: dependabot[bot] <support@github.com>
2020-03-03Update cached file size when cache is skippedFabricio Voznika
gofer.dentryReadWriter.WriteFromBlocks was not updating gofer.dentry.size after a write operation that skips the cache. Updates #1198 PiperOrigin-RevId: 298708646
2020-03-03Avoid memory leaksTamir Duberstein
Properly discard segments from the segment heap. PiperOrigin-RevId: 298704074
2020-03-03platform/ptrace: don't call probeSeccomp on arm64Andrei Vagin
The support of PTRACE_SYSEMU on arm64 was added in the 5.3 kernel, so we can be sure that the current version is higher that 5.3. And this change moves vsyscall seccomp rules to the arch specific file, because vsyscall isn't supported on arm64. PiperOrigin-RevId: 298696493
2020-03-03Extract local variables for readabilityTamir Duberstein
PiperOrigin-RevId: 298690552
2020-03-03Merge pull request #2008 from lubinszARM:pr_skip_vsyscallgVisor bot
PiperOrigin-RevId: 298683693
2020-03-03Merge pull request #2043 from lubinszARM:pr_clean1gVisor bot
PiperOrigin-RevId: 298683502
2020-03-03Fix datarace on TransportEndpointInfo.ID and clean up semantics.Ian Gudger
Ensures that all access to TransportEndpointInfo.ID is either: * In a function ending in a Locked suffix. * While holding the appropriate mutex. This primary affects the checkV4Mapped method on affected endpoints, which has been renamed to checkV4MappedLocked. Also document the method and change its argument to be a value instead of a pointer which had caused some awkwardness. This race was possible in the udp and icmp endpoints between Connect and uses of TransportEndpointInfo.ID including in both itself and Bind. The tcp endpoint did not suffer from this bug, but benefited from better documentation. Updates #357 PiperOrigin-RevId: 298682913
2020-03-03Move temp_umask to test/util.Adin Scannell
PiperOrigin-RevId: 298667595
2020-03-03code clean: minor changes to compatible with ubuntu18.04Bin Lu
Signed-off-by: Bin Lu <bin.lu@arm.com>
2020-03-02Fix panic caused by invalid address for Bind in packet sockets.Nayana Bidari
PiperOrigin-RevId: 298476533
2020-03-02Merge pull request #2039 from avagin:update-golang.org-x-sysgVisor bot
PiperOrigin-RevId: 298457842
2020-03-02Fix data-race when reading/writing e.amss.Bhasker Hariharan
PiperOrigin-RevId: 298451319
2020-03-02Update golang.org/x/sysAndrei Vagin
It was downgraded by mistake in e5d9a4010bdb ("Add ability to execute go.mod in gopath context.") Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-03-02Do not read-lock NIC recursivelyGhanan Gowripalan
A deadlock may occur if a write lock on a RWMutex is blocked between nested read lock attempts as the inner read lock attempt will be blocked in this scenario. Example (T1 and T2 are differnt goroutines): T1: obtain read-lock T2: attempt write-lock (blocks) T1: attempt inner/nested read-lock (blocks) Here we can see that T1 and T2 are deadlocked. Tests: Existing tests pass. PiperOrigin-RevId: 298426678
2020-03-02Merge pull request #1885 from avagin:arm64-pcidsgVisor bot
PiperOrigin-RevId: 298405064
2020-03-02socket: take readMu to access readViewAndrei Vagin
DATA RACE in netstack.(*SocketOperations).fetchReadView Write at 0x00c001dca138 by goroutine 1001: gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).fetchReadView() pkg/sentry/socket/netstack/netstack.go:418 +0x85 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).coalescingRead() pkg/sentry/socket/netstack/netstack.go:2309 +0x67 gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).nonBlockingRead() pkg/sentry/socket/netstack/netstack.go:2378 +0x183d Previous read at 0x00c001dca138 by goroutine 1111: gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*SocketOperations).Ioctl() pkg/sentry/socket/netstack/netstack.go:2666 +0x533 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Ioctl() Reported-by: syzbot+d4c3885fcc346f08deb6@syzkaller.appspotmail.com PiperOrigin-RevId: 298387377
2020-03-02Take write lock when removing xattrMichael Pratt
PiperOrigin-RevId: 298380654
2020-03-02Fix syscall test build error on arm64.Haibo Xu
The error was introduced in the merge of PR #1471. Some codes are missing when adding bazel select_arch command to the test/syscall/linux/BUILD file. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I8cae3f4ae78c2e14671f3ac6e7361dc2806d9305
2020-03-02passed the syscall test case 'clock_getres' on Arm64 platformBin Lu
Test command: bazel test //test/syscalls:clock_getres_test_runsc_ptrace Signed-off-by: Bin Lu <bin.lu@arm.com>
2020-02-28Merge pull request #1929 from avagin:arm64-cpuidgVisor bot
PiperOrigin-RevId: 297982488
2020-02-28watchdog: print panic error message before other messagesAndrei Vagin
This is needed for syzkaller to proper classify issues. Right now, all watchdog issues are duped to one with the subject "panic: Sentry detected stuck task(s). See stack trace and message above for more details". PiperOrigin-RevId: 297975363
2020-02-28Define CPUIDInstruction for arm64Andrei Vagin
There is no cpuid instruction on arm64, so we need to defined it just to avoid a compile time error. Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-02-28Run `./tools/go_mod.sh tidy`.Nicolas Lacasse
These dependencies do not need to be in our go.mod or go.sum files. PiperOrigin-RevId: 297942163
2020-02-28pcids.go isn't arch-specificAndrei Vagin
Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-02-28Bump rules_go to 0.22.0 and go toolchain to 1.14.Nicolas Lacasse
PiperOrigin-RevId: 297915917
2020-02-28Mark gettid and getdents as nogotsanZach Koopmans
PiperOrigin-RevId: 297915815
2020-02-28Make pipe buffer implementation standard.Adin Scannell
A follow-up change will convert the networking code to use this standard pipe implementation. PiperOrigin-RevId: 297903206
2020-02-28Merge pull request #1827 from amscanne:fix_go_modgVisor bot
PiperOrigin-RevId: 297895651
2020-02-28Allow to specify a separate log for GO's runtime messagesAndrei Vagin
GO's runtime calls the write system call twice to print "panic:" and "the reason of this panic", so here is a race window when other threads can print something to the log and we will see something like this: panic: log messages from another thread The reason of the panic. This confuses the syzkaller blacklist and dedup detection. It also makes the logs generally difficult to read. e.g., data races often have one side of the race, followed by a large "diagnosis" dump, finally followed by the other side of the race. PiperOrigin-RevId: 297887895
2020-02-28Hide /dev/net/tun when using hostinet.Ting-Yu Wang
/dev/net/tun does not currently work with hostinet. This has caused some program starts failing because it thinks the feature exists. PiperOrigin-RevId: 297876196
2020-02-28Add ability to execute go.mod in gopath context.Adin Scannell
2020-02-28Change dup2 call to dup3Fabricio Voznika
We changed syscalls to allow dup3 for ARM64. Updates #1198 PiperOrigin-RevId: 297870816
2020-02-28skip vsyscall test cases on Arm64Bin Lu
Signed-off-by: Bin Lu <bin.lu@arm.com>
2020-02-27Fix apt-get reliability issues.Adin Scannell
This is frequently causing the core build scripts to fail. The core ubuntu distribution will perform an auto-update at first start, which may cause the lock file to be held. All apt-get commands may be done in a loop in order to retry to avoid this issue. We may want to consider retrying other pieces, but for now this should avoid the most frequent cause of build flakes. PiperOrigin-RevId: 297704789
2020-02-27Log oom_score_adj value on errorFabricio Voznika
Updates #1873 PiperOrigin-RevId: 297695241
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