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2020-12-12Merge release-20201208.0-40-g08d36b6c6 (automated)gVisor bot
2020-12-12Reduce the memory overhead in IP fragment managementToshi Kikuchi
- Deep-copy pkt.Data and hold it instead of shallow-copy (vv.Clone). This allows the pkt's backing array, which includes the header portion, to be freed. - Remove fragHeap. The fragments are now held in holes struct instead. - Stop reserving the initial capacity of holes slice. PiperOrigin-RevId: 347198744
2020-12-12Merge release-20201208.0-39-g4aef908c9 (automated)gVisor bot
2020-12-12Introduce IPv6 extension header serialization facilitiesBruno Dal Bo
Adds IPv6 extension header serializer and Hop by Hop options serializer. Add RouterAlert option serializer and use it in MLD. Fixed #4996 Startblock: has LGTM from marinaciocea and then add reviewer ghanan PiperOrigin-RevId: 347174537
2020-12-12Merge release-20201208.0-38-g4b697aae5 (automated)gVisor bot
2020-12-12Merge release-20201208.0-37-gbe5922fbd (automated)gVisor bot
2020-12-11Internal change.gVisor bot
PiperOrigin-RevId: 347091372
2020-12-12Merge release-20201208.0-36-g1e92732eb (automated)gVisor bot
2020-12-11Make fixes to vfs2 leak checking.Dean Deng
PiperOrigin-RevId: 347089828
2020-12-11Merge release-20201208.0-35-g80379894d (automated)gVisor bot
2020-12-11Add runsc symbolize command.Dean Deng
This command takes instruction pointers from stdin and converts them into their corresponding file names and line/column numbers in the runsc source code. The inputs are not interpreted as actual addresses, but as synthetic values that are exposed through /sys/kernel/debug/kcov. One can extract coverage information from kcov and translate those values into locations in the source code by running symbolize on the same runsc binary. This will allow us to generate syzkaller coverage reports. PiperOrigin-RevId: 347089624
2020-12-11Merge release-20201208.0-34-gd45420b15 (automated)gVisor bot
2020-12-11Merge release-20201208.0-33-g5bdc167d1 (automated)gVisor bot
2020-12-11Fix panic when IPv4 address is used in sendmsg for IPv6 socketsNayana Bidari
We do not rely on error for getsockopt options(which have boolean values) anymore. This will cause issue in sendmsg where we used to return error for IPV6_V6Only option. Fix the panic by returning error (for sockets other than TCP and UDP) if the address does not match the type(AF_INET/AF_INET6) of the socket. PiperOrigin-RevId: 347063838
2020-12-11Merge release-20201208.0-32-g305a45655 (automated)gVisor bot
2020-12-11Merge release-20201208.0-31-g4cba3904f (automated)gVisor bot
2020-12-11Remove existing nogo exceptions.Adin Scannell
PiperOrigin-RevId: 347047550
2020-12-11Merge release-20201208.0-28-gaf4afdc0e (automated)gVisor bot
2020-12-11[netstack] Decouple tcpip.ControlMessages from the IP control messges.Ayush Ranjan
tcpip.ControlMessages can not contain Linux specific structures which makes it painful to convert back and forth from Linux to tcpip back to Linux when passing around control messages in hostinet and raw sockets. Now we convert to the Linux version of the control message as soon as we are out of tcpip. PiperOrigin-RevId: 347027065
2020-12-11Merge release-20201208.0-26-g73eccab91 (automated)gVisor bot
2020-12-11Make semctl IPC_INFO cmd return the index of highest used entry.Jing Chen
PiperOrigin-RevId: 346973338
2020-12-10Change merkle root file name to avoid collisionChong Cai
PiperOrigin-RevId: 346923826
2020-12-11Merge release-20201130.0-84-gbcb97a3bb (automated)gVisor bot
2020-12-10Disable host reassembly for fragments.Bhasker Hariharan
fdbased endpoint was enabling fragment reassembly on the host AF_PACKET socket to ensure that fragments are delivered inorder to the right dispatcher. But this prevents fragments from being delivered to gvisor at all and makes testing of gvisor's fragment reassembly code impossible. The potential impact from this is minimal since IP Fragmentation is not really that prevelant and in cases where we do get fragments we may deliver the fragment out of order to the TCP layer as multiple network dispatchers may process the fragments and deliver a reassembled fragment after the next packet has been delivered to the TCP endpoint. While not desirable I believe the impact from this is minimal due to low prevalence of fragmentation. Also removed PktType and Hatype fields when binding the socket as these are not used when binding. Its just confusing to have them specified. See: https://man7.org/linux/man-pages/man7/packet.7.html "Fields used for binding are sll_family (should be AF_PACKET), sll_protocol, and sll_ifindex." Fixes #5055 PiperOrigin-RevId: 346919439
2020-12-10Merge release-20201130.0-80-g53a95ad0d (automated)gVisor bot
2020-12-10Use specified source address for IGMP/MLD packetsGhanan Gowripalan
This change also considers interfaces and network endpoints enabled up up to the point all work to disable them are complete. This was needed so that protocols can perform shutdown work while being disabled (e.g. sending a packet which requires the endpoint to be enabled to obtain a source address). Bug #4682, #4861 Fixes #4888 Startblock: has LGTM from peterjohnston and then add reviewer brunodalbo PiperOrigin-RevId: 346869702
2020-12-10Merge release-20201130.0-74-g92ca72ecb (automated)gVisor bot
2020-12-10Merge release-20201130.0-71-g992769c77 (automated)gVisor bot
2020-12-10Merge release-20201130.0-69-g50189b0d6 (automated)gVisor bot
2020-12-09Add support for IP_RECVORIGDSTADDR IP option.Bhasker Hariharan
Fixes #5004 PiperOrigin-RevId: 346643745
2020-12-09Add //pkg/sync:generic_atomicptrmap.Jamie Liu
AtomicPtrMap is a generic concurrent map from arbitrary keys to arbitrary pointer values. Benchmarks: name time/op StoreDelete/RWMutexMap-12 335ns ± 1% StoreDelete/SyncMap-12 705ns ± 3% StoreDelete/AtomicPtrMap-12 287ns ± 4% StoreDelete/AtomicPtrMapSharded-12 289ns ± 1% LoadOrStoreDelete/RWMutexMap-12 342ns ± 2% LoadOrStoreDelete/SyncMap-12 662ns ± 2% LoadOrStoreDelete/AtomicPtrMap-12 290ns ± 7% LoadOrStoreDelete/AtomicPtrMapSharded-12 293ns ± 2% LookupPositive/RWMutexMap-12 101ns ±26% LookupPositive/SyncMap-12 202ns ± 2% LookupPositive/AtomicPtrMap-12 71.1ns ± 2% LookupPositive/AtomicPtrMapSharded-12 73.2ns ± 1% LookupNegative/RWMutexMap-12 119ns ± 1% LookupNegative/SyncMap-12 154ns ± 1% LookupNegative/AtomicPtrMap-12 84.7ns ± 3% LookupNegative/AtomicPtrMapSharded-12 86.8ns ± 1% Concurrent/FixedKeys_1PercentWrites_RWMutexMap-12 1.32µs ± 2% Concurrent/FixedKeys_1PercentWrites_SyncMap-12 52.7ns ±10% Concurrent/FixedKeys_1PercentWrites_AtomicPtrMap-12 31.8ns ±20% Concurrent/FixedKeys_1PercentWrites_AtomicPtrMapSharded-12 24.0ns ±15% Concurrent/FixedKeys_10PercentWrites_RWMutexMap-12 860ns ± 3% Concurrent/FixedKeys_10PercentWrites_SyncMap-12 68.8ns ±20% Concurrent/FixedKeys_10PercentWrites_AtomicPtrMap-12 98.6ns ± 7% Concurrent/FixedKeys_10PercentWrites_AtomicPtrMapSharded-12 42.0ns ±25% Concurrent/FixedKeys_50PercentWrites_RWMutexMap-12 1.17µs ± 3% Concurrent/FixedKeys_50PercentWrites_SyncMap-12 136ns ±34% Concurrent/FixedKeys_50PercentWrites_AtomicPtrMap-12 286ns ± 3% Concurrent/FixedKeys_50PercentWrites_AtomicPtrMapSharded-12 115ns ±35% Concurrent/ChangingKeys_1PercentWrites_RWMutexMap-12 1.27µs ± 2% Concurrent/ChangingKeys_1PercentWrites_SyncMap-12 5.01µs ± 3% Concurrent/ChangingKeys_1PercentWrites_AtomicPtrMap-12 38.1ns ± 3% Concurrent/ChangingKeys_1PercentWrites_AtomicPtrMapSharded-12 22.6ns ± 2% Concurrent/ChangingKeys_10PercentWrites_RWMutexMap-12 1.08µs ± 2% Concurrent/ChangingKeys_10PercentWrites_SyncMap-12 5.97µs ± 1% Concurrent/ChangingKeys_10PercentWrites_AtomicPtrMap-12 390ns ± 2% Concurrent/ChangingKeys_10PercentWrites_AtomicPtrMapSharded-12 93.6ns ± 1% Concurrent/ChangingKeys_50PercentWrites_RWMutexMap-12 1.77µs ± 2% Concurrent/ChangingKeys_50PercentWrites_SyncMap-12 8.07µs ± 2% Concurrent/ChangingKeys_50PercentWrites_AtomicPtrMap-12 1.61µs ± 2% Concurrent/ChangingKeys_50PercentWrites_AtomicPtrMapSharded-12 386ns ± 1% Updates #231 PiperOrigin-RevId: 346614776
2020-12-09Merge release-20201130.0-67-gf6cb96bd5 (automated)gVisor bot
2020-12-09[netstack] Make tcpip.Error savable.Ayush Ranjan
Earlier we could not save tcpip.Error objects in structs because upon restore the constant's address changes in netstack's error translation map and translating the error would panic because the map is based on the address of the tcpip.Error instead of the error itself. Now I made that translations map use the error message as key instead of the address. Added relevant synchronization mechanisms to protect the structure and initialize it upon restore. PiperOrigin-RevId: 346590485
2020-12-09Do not perform IGMP/MLD on loopback interfacesGhanan Gowripalan
The loopback interface will never have any neighbouring nodes so advertising its interest in multicast groups is unnecessary. Bug #4682, #4861 Startblock: has LGTM from asfez and then add reviewer tamird PiperOrigin-RevId: 346587604
2020-12-09Merge release-20201130.0-65-g96d14de0f (automated)gVisor bot
2020-12-09Cap UDP payload size to length informed in UDP headerBruno Dal Bo
startblock: has LGTM from peterjohnston and then add reviewer ghanan,tamird PiperOrigin-RevId: 346565589
2020-12-09Prepare for supporting cross compilation.Andrei Vagin
PiperOrigin-RevId: 346496532
2020-12-09export MountTempDirectoryZeling Feng
PiperOrigin-RevId: 346487763
2020-12-08Merge release-20201130.0-61-g9c198e5df (automated)gVisor bot
2020-12-07Fix error handling on fusefs mount.Rahat Mahmood
Don't propagate arbitrary golang errors up from fusefs because errors that don't map to an errno result in a sentry panic. Reported-by: syzbot+697cb635346e456fddfc@syzkaller.appspotmail.com PiperOrigin-RevId: 346220306
2020-12-07Merge release-20201130.0-58-g615c3380d (automated)gVisor bot
2020-12-07Export IGMP statsArthur Sfez
PiperOrigin-RevId: 346197760
2020-12-07Merge release-20201130.0-57-g0e5ba13b3 (automated)gVisor bot
2020-12-07Remove stale commentSam Balana
Removes comment lines about MaxUnsolicitedReportDelay. This is already documented in the comment for GenericMulticastProtocolOptions. PiperOrigin-RevId: 346185053
2020-12-07Merge release-20201130.0-56-gd574666de (automated)gVisor bot
2020-12-07Merge pull request #4908 from lubinszARM:pr_kvm_ext_dabtgVisor bot
PiperOrigin-RevId: 346143528
2020-12-07Merge release-20201130.0-54-g7527371f0 (automated)gVisor bot
2020-12-07Merge pull request #4874 from zhlhahaha:2022gVisor bot
PiperOrigin-RevId: 346134026
2020-12-07Merge release-20201130.0-51-gb28dc25ae (automated)gVisor bot
2020-12-07Remove p9.fidRef.openedMuMichael Pratt
openedMu has lock ordering violations. Most locks go through OpenedFlag(), which is usually taken after renameMu and opMu. On the other hand, Tlopen takes openedMu before renameMu and opMu (via safelyRead). Resolving this violation is simple: just drop openedMu. The opened and openFlags fields are already protected by opMu in most cases, renameMu (for write) in one case (via safelyGlobal), and only in doWalk by neither. This is a bit ugly because opMu is supposed to be a "semantic" lock, but it works. I'm open to other suggestions. Note that doWalk has a race condition where a FID may open after the open check but before actually walking. This race existed before this change as well; it is not clear if it is problematic. PiperOrigin-RevId: 346108483
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