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2020-03-02Merge release-20200219.0-81-g3310175 (automated)gVisor bot
2020-03-02Fix data-race when reading/writing e.amss.Bhasker Hariharan
PiperOrigin-RevId: 298451319
2020-03-02Merge release-20200219.0-80-g8821a71 (automated)gVisor bot
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 release-20200219.0-79-gf03e19d (automated)gVisor bot
2020-03-02Merge pull request #1885 from avagin:arm64-pcidsgVisor bot
PiperOrigin-RevId: 298405064
2020-03-02Merge release-20200219.0-77-g42fb7d3 (automated)gVisor bot
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
2020-03-02Merge release-20200219.0-76-g62bd3ca (automated)gVisor bot
2020-03-02Take write lock when removing xattrMichael Pratt
PiperOrigin-RevId: 298380654
2020-02-29Merge release-20200219.0-75-g3d9ddeb (automated)gVisor bot
2020-02-28Merge pull request #1929 from avagin:arm64-cpuidgVisor bot
PiperOrigin-RevId: 297982488
2020-02-29Merge release-20200219.0-73-gab7ecdd (automated)gVisor bot
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>
2020-02-28pcids.go isn't arch-specificAndrei Vagin
Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-02-28Merge release-20200219.0-71-gccecf29 (automated)gVisor bot
2020-02-28Merge release-20200219.0-69-g463f421 (automated)gVisor bot
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 release-20200219.0-65-g6b4d36e (automated)gVisor bot
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
2020-02-28Change dup2 call to dup3Fabricio Voznika
We changed syscalls to allow dup3 for ARM64. Updates #1198 PiperOrigin-RevId: 297870816
2020-02-27Merge release-20200219.0-61-gaa9f8ab (automated)gVisor bot
2020-02-27Merge release-20200219.0-58-gc6bdc6b (automated)gVisor bot
2020-02-27Fix a race in TCP endpoint teardown and teardown the stack in tcp_test.Ian Gudger
Call stack.Close on stacks when we are done with them in tcp_test. This avoids leaking resources and reduces the test's flakiness when race/gotsan is enabled. It also provides test coverage for the race also fixed in this change, which can be reliably triggered with the stack.Close change (and without the other changes) when race/gotsan is enabled. The race was possible when calling Abort (via stack.Close) on an endpoint processing a SYN segment as part of a passive connect. Updates #1564 PiperOrigin-RevId: 297685432
2020-02-27Merge release-20200219.0-57-gd9ee811 (automated)gVisor bot
2020-02-27Merge of a369c88c0c4ece5239855000d28df045111c1be7gVisor bot
PiperOrigin-RevId: 297674924
2020-02-27Merge release-20200219.0-52-gabf7ebc (automated)gVisor bot
2020-02-27Internal change.Nayana Bidari
PiperOrigin-RevId: 297638665
2020-02-27Merge release-20200219.0-50-g8fb84f7 (automated)gVisor bot
2020-02-26Fix construct of linux.Stat for arm64.Rahat Mahmood
PiperOrigin-RevId: 297494373
2020-02-27Merge release-20200219.0-49-g6ddeb35 (automated)gVisor bot
2020-02-26Merge pull request #1912 from lubinszARM:pr_kvm_buildgVisor bot
PiperOrigin-RevId: 297492004
2020-02-26Merge release-20200219.0-46-ga92087f (automated)gVisor bot
2020-02-25Add VFS.NewDisconnectedMount().Jamie Liu
Analogous to Linux's kern_mount(). PiperOrigin-RevId: 297259580
2020-02-26Merge release-20200219.0-45-gfba479b (automated)gVisor bot
2020-02-25Fix DATA RACE in fs.MayDelete.Adin Scannell
MayDelete must lock the directory also, otherwise concurrent renames may race. Note that this also changes the methods to be aligned with the actual Remove and RemoveDirectory methods to minimize confusion when reading the code. (It was hard to see that resolution was correct.) PiperOrigin-RevId: 297258304
2020-02-26Merge release-20200219.0-44-g813b1b0 (automated)gVisor bot
2020-02-25Merge pull request #1271 from lubinszARM:pr_ring0_1gVisor bot
PiperOrigin-RevId: 297230721
2020-02-25Merge release-20200219.0-42-g87288b2 (automated)gVisor bot
2020-02-25Add netlink sockopt logging to strace.Ian Gudger
PiperOrigin-RevId: 297220008
2020-02-25Merge release-20200219.0-41-g5f1f9dd (automated)gVisor bot
2020-02-25Use link-local source address for link-local multicastGhanan Gowripalan
Tests: - header_test.TestIsV6LinkLocalMulticastAddress - header_test.TestScopeForIPv6Address - stack_test.TestIPv6SourceAddressSelectionScopeAndSameAddress PiperOrigin-RevId: 297215576
2020-02-25Merge release-20200219.0-40-g72e3f3a (automated)gVisor bot
2020-02-25Merge release-20200219.0-39-g430992a (automated)gVisor bot
2020-02-25Add option to skip stuck tasks waiting for address spaceFabricio Voznika
PiperOrigin-RevId: 297192390
2020-02-25Merge pull request #1816 from xiaobo55x:trap_flaggVisor bot
PiperOrigin-RevId: 297191168
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
2020-02-25Merge release-20200219.0-36-g6def8ea (automated)gVisor bot
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