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2020-10-09Merge release-20200928.0-77-g257703c05 (automated)gVisor bot
2020-10-09Automated rollback of changelist 336304024Ghanan Gowripalan
PiperOrigin-RevId: 336339194
2020-10-09Merge release-20200928.0-75-g76a09f0cf (automated)gVisor bot
2020-10-09syscalls: Don't leak a file on the error pathAndrei Vagin
Reported-by: syzbot+bb82fb556d5d0a43f632@syzkaller.appspotmail.com PiperOrigin-RevId: 336324720
2020-10-09Merge release-20200928.0-74-g8566decab (automated)gVisor bot
2020-10-09Automated rollback of changelist 336185457Bhasker Hariharan
PiperOrigin-RevId: 336304024
2020-10-09Merge release-20200928.0-73-g07b1d7413 (automated)gVisor bot
2020-10-08Only block resolution when NUD is incompleteGhanan Gowripalan
When a completed entry exists for a neighbor, there is no need to block while reachability is (re)confirmed. The stack should continue to use the neighbor's link address while NUD is performed. Test: stack_test.TestNeighborCacheReplace PiperOrigin-RevId: 336199043
2020-10-08Merge release-20200928.0-72-g6bad4851d (automated)gVisor bot
2020-10-08Merge release-20200928.0-71-g6768e6c59 (automated)gVisor bot
2020-10-08Implement MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ.Jamie Liu
cf. 2a36ab717e8f "rseq/membarrier: Add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ" PiperOrigin-RevId: 336186795
2020-10-08Do not resolve routes immediatelyGhanan Gowripalan
When a response needs to be sent to an incoming packet, the stack should consult its neighbour table to determine the remote address's link address. When an entry does not exist in the stack's neighbor table, the stack should queue the packet while link resolution completes. See comments. PiperOrigin-RevId: 336185457
2020-10-08Merge release-20200928.0-70-g40269d0c2 (automated)gVisor bot
2020-10-08Send unicast probes when link address is knownGhanan Gowripalan
When the neighbor table already has link address for a neighbor but is trying to confirm reachability, it may send unicast probes to the neighbor. PiperOrigin-RevId: 336166711
2020-10-08Merge release-20200928.0-67-g0c3134028 (automated)gVisor bot
2020-10-08Change IPv6 reassembly timeout to 60sArthur Sfez
It was originally set to 30s for IPv6 (same as IPv4) but this is not what RFC 8200 prescibes. Linux also defaults to 60s [1]. [1] https://github.com/torvalds/linux/blob/47ec5303d73ea344e84f46660fff693c57641386/include/net/ipv6.h#L456 PiperOrigin-RevId: 336034636
2020-10-08Merge release-20200928.0-66-ga55bd73d4 (automated)gVisor bot
2020-10-07Add staticcheck and staticstyle analyzers.Adin Scannell
This change also adds support to go_stateify for detecting an appropriate receiver name, avoiding a large number of false positives. PiperOrigin-RevId: 335994587
2020-10-07Merge release-20200928.0-64-gb89e43e20 (automated)gVisor bot
2020-10-07Merge pull request #4376 from lubinszARM:pr_usr_tls_newgVisor bot
PiperOrigin-RevId: 335930035
2020-10-07Merge release-20200928.0-61-gecf9a7ef0 (automated)gVisor bot
2020-10-07Add precise synchronization to KVM.Adin Scannell
By using TSC scaling as a hack, we can trick the kernel into setting an offset of exactly zero. Huzzah! PiperOrigin-RevId: 335922019
2020-10-06Merge release-20200928.0-59-g95cac27d0 (automated)gVisor bot
2020-10-06Discard invalid Neighbor SolicitationsPeter Johnston
...per RFC 4861 s7.1.1. PiperOrigin-RevId: 335742851
2020-10-06Merge release-20200928.0-58-g99bf022c2 (automated)gVisor bot
2020-10-06Add support for IPv6 fragmentationArthur Sfez
Most of the IPv4 fragmentation code was moved in the fragmentation package and it is reused by IPv6 fragmentation. Test: - pkg/tcpip/network/ipv4:ipv4_test - pkg/tcpip/network/ipv6:ipv6_test - pkg/tcpip/network/fragmentation:fragmentation_test Fixes #4389 PiperOrigin-RevId: 335714280
2020-10-06Merge release-20200928.0-55-g1336af78d (automated)gVisor bot
2020-10-06Implement membarrier(2) commands other than *_SYNC_CORE.Jamie Liu
Updates #267 PiperOrigin-RevId: 335713923
2020-10-06Fix typo in merkletreegVisor bot
PiperOrigin-RevId: 335709552
2020-10-06Merge release-20200928.0-51-ga57dc67b6 (automated)gVisor bot
2020-10-06[vfs2] Don't leak reference from Mountnamespace.Root().Dean Deng
PiperOrigin-RevId: 335583637
2020-10-06Merge release-20200928.0-50-g798cc6b04 (automated)gVisor bot
2020-10-05Fix IPv4 ICMP echo handler to copy optionsJulian Elischer
The IPv4 RFCs are specific (though obtuse) that an echo response packet needs to contain all the options from the echo request, much as if it been routed back to the sender, though apparently with a new TTL. They suggest copying the incoming packet header to achieve this so that is what this patch does. PiperOrigin-RevId: 335559176
2020-10-06Merge release-20200928.0-49-ga1df7f2ed (automated)gVisor bot
2020-10-05Simplify nil assignment in kcov.Dean Deng
PiperOrigin-RevId: 335548610
2020-10-06Merge release-20200928.0-47-g8ef7cebcb (automated)gVisor bot
2020-10-05Merge pull request #4079 from lemin9538:arm64_fixgVisor bot
PiperOrigin-RevId: 335532690
2020-10-05Enable more VFS2 testsFabricio Voznika
Updates #1487 PiperOrigin-RevId: 335516732
2020-10-05Merge release-20200928.0-41-g1c1eefbd4 (automated)gVisor bot
2020-10-05Merge pull request #4368 from zhlhahaha:1979gVisor bot
PiperOrigin-RevId: 335492800
2020-10-05Merge release-20200928.0-39-g91e2d15a6 (automated)gVisor bot
2020-10-05Remove AssignableAddressEndpoint.NetworkEndpointGhanan Gowripalan
We can get the network endpoint directly from the NIC. This is a preparatory CL for when a Route needs to hold a dedicated NIC as its output interface. This is because when forwarding is enabled, packets may be sent from a NIC different from the NIC a route's local address is associated with. PiperOrigin-RevId: 335484500
2020-10-03Merge release-20200921.0-107-ge0aaf40e3 (automated)gVisor bot
2020-10-03Fix kcov enabling and disabling procedures.Dean Deng
- When the KCOV_ENABLE_TRACE ioctl is called with the trace kind KCOV_TRACE_PC, the kcov mode should be set to KCOV_*MODE*_TRACE_PC. - When the owning task of kcov exits, the memory mapping should not be cleared so it can be used by other tasks. - Add more tests (also tested on native Linux kcov). PiperOrigin-RevId: 335202585
2020-10-02Merge release-20200921.0-106-g55f835d1f (automated)gVisor bot
2020-10-02kvm/x86: handle a case when interrupts are enabled in the kernel spaceAndrei Vagin
Before we thought that interrupts are always disabled in the kernel space, but here is a case when goruntime switches on a goroutine which has been saved in the host mode. On restore, the popf instruction is used to restore flags and this means that all flags what the goroutine has in the host mode will be restored in the kernel mode. And in the host mode, interrupts are always enabled. The long story short, we can't use the IF flag for determine whether a tasks is running in user or kernel mode. This patch reworks the code so that in userspace, the first bit of the IOPL flag will be always set. This doesn't give any new privilidges for a task because CPL in userspace is always 3. But then we can use this flag to distinguish user and kernel modes. The IOPL flag is never set in the kernel and host modes. Reported-by: syzbot+5036b325a8eb15c030cf@syzkaller.appspotmail.com Reported-by: syzbot+034d580e89ad67b8dc75@syzkaller.appspotmail.com Signed-off-by: Andrei Vagin <avagin@gmail.com>
2020-10-02Merge release-20200921.0-102-g4f462b0ed (automated)gVisor bot
2020-10-02Convert uses of the binary package in kernel to go-marshal.Rahat Mahmood
PiperOrigin-RevId: 335077195
2020-10-02Merge release-20200921.0-100-gd23f1ec0f (automated)gVisor bot
2020-10-02Update minimum RTT for RACK.Nayana Bidari
We are currently tracking the minimum RTT for RACK as smoothed RTT. As per RFC minimum RTT can be a global minimum of all RTTs or filtered value of recent RTT measurements. In this cl minimum RTT is updated to global minimum of all RTTs for the connection. PiperOrigin-RevId: 335061518
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