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2020-04-08Merge release-20200323.0-89-g56054fc (automated)gVisor bot
2020-04-07Add friendlier messages for frequently encountered errors.Ian Lewis
Issue #2270 Issue #1765 PiperOrigin-RevId: 305385436
2020-03-26Merge release-20200219.0-251-g137f361 (automated)gVisor bot
2020-03-26Use host-defined file owner and mode, when possible, for imported fds.Dean Deng
Using the host-defined file owner matches VFS1. It is more correct to use the host-defined mode, since the cached value may become out of date. However, kernfs.Inode.Mode() does not return an error--other filesystems on kernfs are in-memory so retrieving mode should not fail. Therefore, if the host syscall fails, we rely on a cached value instead. Updates #1672. PiperOrigin-RevId: 303220864
2020-03-20Merge release-20200219.0-211-g248e46f (automated)gVisor bot
2020-03-19Whitelist utimensat(2).Dean Deng
utimensat is used by hostfs for setting timestamps on imported fds. Previously, this would crash the sandbox since utimensat was not allowed. Correct the VFS2 version of hostfs to match the call in VFS1. PiperOrigin-RevId: 301970121
2020-03-14Merge release-20200219.0-177-g5e413ca (automated)gVisor bot
2020-03-14Plumb VFS2 imported fds into virtual filesystem.Dean Deng
- When setting up the virtual filesystem, mount a host.filesystem to contain all files that need to be imported. - Make read/preadv syscalls to the host in cases where preadv2 may not be supported yet (likewise for writing). - Make save/restore functions in kernel/kernel.go return early if vfs2 is enabled. PiperOrigin-RevId: 300922353
2020-03-06Merge release-20200219.0-109-g6367963 (automated)gVisor bot
2020-03-05Merge pull request #1951 from moricho:moricho/add-profiler-optiongVisor bot
PiperOrigin-RevId: 299233818
2020-02-28Merge release-20200219.0-66-g322dbfe (automated)gVisor bot
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
2020-02-26add profile optionmoricho
2020-02-25Merge release-20200219.0-37-g471b15b (automated)gVisor bot
2020-02-25Port most syscalls to VFS2.Jamie Liu
pipe and pipe2 aren't ported, pending a slight rework of pipe FDs for VFS2. mount and umount2 aren't ported out of temporary laziness. access and faccessat need additional FSImpl methods to implement properly, but are stubbed to prevent googletest from CHECK-failing. Other syscalls require additional plumbing. Updates #1623 PiperOrigin-RevId: 297188448
2020-02-20Merge release-20200211.0-57-g4a73bae (automated)gVisor bot
2020-02-20Initial network namespace support.gVisor bot
TCP/IP will work with netstack networking. hostinet doesn't work, and sockets will have the same behavior as it is now. Before the userspace is able to create device, the default loopback device can be used to test. /proc/net and /sys/net will still be connected to the root network stack; this is the same behavior now. Issue #1833 PiperOrigin-RevId: 296309389
2020-02-14Merge release-20200211.0-24-g5baf9dc (automated)gVisor bot
2020-02-14Synchronize signalling with S/RgVisor bot
This is to fix a data race between sending an external signal to a ThreadGroup and kernel saving state for S/R. PiperOrigin-RevId: 295244281
2020-02-14Merge release-20200211.0-17-g4075de1 (automated)gVisor bot
2020-02-14Plumb VFS2 inside the SentrygVisor bot
- Added fsbridge package with interface that can be used to open and read from VFS1 and VFS2 files. - Converted ELF loader to use fsbridge - Added VFS2 types to FSContext - Added vfs.MountNamespace to ThreadGroup Updates #1623 PiperOrigin-RevId: 295183950
2020-02-06Merge release-20200127.0-85-g1b6a12a (automated)gVisor bot
2020-02-05Add notes to relevant tests.Adin Scannell
These were out-of-band notes that can help provide additional context and simplify automated imports. PiperOrigin-RevId: 293525915
2020-02-04Merge release-20200127.0-65-g95ce8bb (automated)gVisor bot
2020-02-03Merge release-20200127.0-52-g4d1a648 (automated)gVisor bot
2020-02-03Allow mlock in system call filtersMichael Pratt
Go 1.14 has a workaround for a Linux 5.2-5.4 bug which requires mlock'ing the g stack to prevent register corruption. We need to allow this syscall until it is removed from Go. PiperOrigin-RevId: 292967478
2020-01-28Merge release-20200115.0-125-g437c986 (automated)gVisor bot
2020-01-28Add vfs.FileDescription to FD tableFabricio Voznika
FD table now holds both VFS1 and VFS2 types and uses the correct one based on what's set. Parts of this CL are just initial changes (e.g. sys_read.go, runsc/main.go) to serve as a template for the remaining changes. Updates #1487 Updates #1623 PiperOrigin-RevId: 292023223
2020-01-28Merge release-20200115.0-111-g253c9e6 (automated)gVisor bot
2020-01-27Cleanup glog and add real caller information.Adin Scannell
In general, we've learned that logging must be avoided at all costs in the hot path. It's unlikely that the optimizations here were significant in any case, since buffer would certainly escape. This also adds a test to ensure that the caller identification works as expected, and so that logging can be benchmarked. Original: BenchmarkGoogleLogging-6 1222255 949 ns/op With this change: BenchmarkGoogleLogging-6 517323 2346 ns/op Fixes #184 PiperOrigin-RevId: 291815420
2020-01-27Merge release-20200115.0-110-g0e2f1b7 (automated)gVisor bot
2020-01-27Update package locations.Adin Scannell
Because the abi will depend on the core types for marshalling (usermem, context, safemem, safecopy), these need to be flattened from the sentry directory. These packages contain no sentry-specific details. PiperOrigin-RevId: 291811289
2020-01-27Merge release-20200115.0-103-gd29e59a (automated)gVisor bot
2020-01-27Standardize on tools directory.Adin Scannell
PiperOrigin-RevId: 291745021
2020-01-10Merge release-20191213.0-96-g27500d5 (automated)gVisor bot
2020-01-09New sync package.Ian Gudger
* Rename syncutil to sync. * Add aliases to sync types. * Replace existing usage of standard library sync package. This will make it easier to swap out synchronization primitives. For example, this will allow us to use primitives from github.com/sasha-s/go-deadlock to check for lock ordering violations. Updates #1472 PiperOrigin-RevId: 289033387
2020-01-08Merge release-20191213.0-77-ge21c584 (automated)gVisor bot
2020-01-08Combine various Create*NIC methods into CreateNICWithOptions.Bert Muthalaly
PiperOrigin-RevId: 288779416
2020-01-08Merge release-20191213.0-70-g0cc1e74 (automated)gVisor bot
2020-01-08Add NIC.isLoopback()Bert Muthalaly
...enabling us to remove the "CreateNamedLoopbackNIC" variant of CreateNIC and all the plumbing to connect it through to where the value is read in FindRoute. PiperOrigin-RevId: 288713093
2019-12-17Merge release-20191210.0-46-g725e73e (automated)gVisor bot
2019-12-17Leave minimum CPU number as a constantAleksandr Razumov
Remove introduced CPUNumMin config and hard-code it as 2.
2019-12-17Add minimum CPU number and only lower CPUs on --cpu-num-from-quotaAleksandr Razumov
* Add `--cpu-num-min` flag to control minimum CPUs * Only lower CPU count * Fix comments
2019-12-15Set CPU number to CPU quotaAleksandr Razumov
When application is not cgroups-aware, it can spawn excessive threads which often defaults to CPU number. Introduce a opt-in flag that will set CPU number accordingly to CPU quota (if available). Fixes #1391
2019-12-12Merge release-20191210.0-24-gb9aa62b (automated)gVisor bot
2019-12-11Enable IPv6 in runscBhasker Hariharan
Fixes #1341 PiperOrigin-RevId: 285108973
2019-12-07Merge release-20191129.0-23-g01eadf5 (automated)gVisor bot
2019-12-06Bump up Go 1.13 as minimum requirementFabricio Voznika
PiperOrigin-RevId: 284320186
2019-12-07Merge release-20191129.0-21-ge70636d (automated)gVisor bot
2019-12-06Merge pull request #1233 from xiaobo55x:compatLoggVisor bot
PiperOrigin-RevId: 284305935
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