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2020-10-20Merge release-20201005.0-108-g34a6e9576 (automated)gVisor bot
2020-10-19loader/elf: validate file offsetAndrei Vagin
Reported-by: syzbot+7406eef8247cb5a20855@syzkaller.appspotmail.com PiperOrigin-RevId: 337974474
2020-10-20Merge release-20201005.0-107-gdcc1b71f1 (automated)gVisor bot
2020-10-19Fix reference counting on kcov mappings.Dean Deng
Reported-by: syzbot+078580ce5dd6d607fcd8@syzkaller.appspotmail.com Reported-by: syzbot+2096681f6891e7bf8aed@syzkaller.appspotmail.com PiperOrigin-RevId: 337973519
2020-10-20Merge release-20201005.0-104-gcd86bd493 (automated)gVisor bot
2020-10-19Fix runsc tests on VFS2 overlay.Jamie Liu
- Check the sticky bit in overlay.filesystem.UnlinkAt(). Fixes StickyTest.StickyBitPermDenied. - When configuring a VFS2 overlay in runsc, copy the lower layer's root owner/group/mode to the upper layer's root (as in the VFS1 equivalent, boot.addOverlay()). This makes the overlay root owned by UID/GID 65534 with mode 0755 rather than owned by UID/GID 0 with mode 01777. Fixes CreateTest.CreateFailsOnUnpermittedDir, which assumes that the test cannot create files in /. - MknodTest.UnimplementedTypesReturnError assumes that the creation of device special files is not supported. However, while the VFS2 gofer client still doesn't support device special files, VFS2 tmpfs does, and in the overlay test dimension mknod() targets a tmpfs upper layer. The test initially has all capabilities, including CAP_MKNOD, so its creation of these files succeeds. Constrain these tests to VFS1. - Rename overlay.nonDirectoryFD to overlay.regularFileFD and only use it for regular files, using the original FD for pipes and device special files. This is more consistent with Linux (which gets the original inode_operations, and therefore file_operations, for these file types from ovl_fill_inode() => init_special_inode()) and fixes remaining mknod and pipe tests. - Read/write 1KB at a time in PipeTest.Streaming, rather than 4 bytes. This isn't strictly necessary, but it makes the test less obnoxiously slow on ptrace. Fixes #4407 PiperOrigin-RevId: 337971042
2020-10-19Merge release-20201005.0-102-g54e989ec3 (automated)gVisor bot
2020-10-19Remove legacy bazel configurations.Adin Scannell
Using the newer bazel rules necessitates a transition from proto1 to proto2. In order to resolve the incompatibility between proto2 and gogoproto, the cri runtimeoptions proto must be vendored. Further, some of the semantics of bazel caching changed during the transition. It is now necessary to: - Ensure that :gopath depends only on pure library targets, as the propagation of go_binary build attributes (pure, static) will affected the generated files (though content remains the same, there are conflicts with respect to the gopath). - Update bazel.mk to include the possibility of binaries in the bazel-out directory, as it will now put runsc and others there. This required some refinements to the mechanism of extracting paths, since some the existing regex resulted in false positives. - Change nogo rules to prevent escape generation on binary targets. For some reason, the newer version of bazel attempted to run the nogo analysis on the binary targets, which fails due to the fact that objdump does not work on the final binary. This must be due to a change in the semantics of aspects in bazel3. PiperOrigin-RevId: 337958324
2020-10-19Merge release-20201005.0-100-g63f4cef4d (automated)gVisor bot
2020-10-19[vfs2] Fix fork reference leaks.Dean Deng
PiperOrigin-RevId: 337919424
2020-10-19Merge release-20201005.0-99-gcd108432a (automated)gVisor bot
2020-10-19splice: return EINVAL is len is negativeAndrei Vagin
Reported-by: syzbot+0268cc591c0f517a1de0@syzkaller.appspotmail.com PiperOrigin-RevId: 337901664
2020-10-19Merge release-20201005.0-98-gc206fcbfc (automated)gVisor bot
2020-10-19pgalloc: Do not hold MemoryFile.mu while calling mincore.Ayush Ranjan
This change makes the following changes: - Unlocks MemoryFile.mu while calling mincore (checkCommitted) because mincore can take a really long time. Accordingly looks up the segment in the tree tree again and handles changes to the segment. - MemoryFile.UpdateUsage() can now only be called at frequency at most 100Hz. 100 Hz = linux.CLOCKS_PER_SEC. Co-authored-by: Jamie Liu <jamieliu@google.com> PiperOrigin-RevId: 337865250
2020-10-16Merge release-20201005.0-95-gdffa4c669 (automated)gVisor bot
2020-10-16Don't include link header when forwarding packetsGhanan Gowripalan
Before this change, if a link header was included in an incoming packet that is forwarded, the packet that gets sent out will take the original packet and add a link header to it while keeping the old link header. This would make the sent packet look like: OUTGOING LINK HDR | INCOMING LINK HDR | NETWORK HDR | ... Obviously this is incorrect as we should drop the incoming link header and only include the outgoing link header. This change fixes this bug. Test: integration_test.TestForwarding PiperOrigin-RevId: 337571447
2020-10-16Merge release-20201005.0-94-g4d27f33b0 (automated)gVisor bot
2020-10-16Make IPv4 check the IP header checksumJulian Elischer
The IPv4 header checksum has not been checked, at least in recent times, so add code to do so. Fix all the tests that fail because they never needed to set the checksum. Fixes #4484 PiperOrigin-RevId: 337556243
2020-10-16Merge release-20201005.0-93-gedc106824 (automated)gVisor bot
2020-10-16Enable IPv4 fragmentation for every code path.Arthur Sfez
Currently, fragmentation can only occur during WritePacket(). This enables it for WritePackets() and WriteIncludedHeaderPacket() as well. IPv4 unit tests were refactored to be consistent with the IPv6 unit tests. This removes the extraHeaderReserveLength field and the related "prependable bytes" unit tests (for both IPv4 and IPv6) because it was only testing a panic condition when the value was too low. Fixes #3796 PiperOrigin-RevId: 337550061
2020-10-16Merge release-20201005.0-92-gb491712e1 (automated)gVisor bot
2020-10-16Merge pull request #4387 from lubinszARM:pr_tls_host_sentry_1gVisor bot
PiperOrigin-RevId: 337544656
2020-10-16Merge release-20201005.0-89-gfbfcf8144 (automated)gVisor bot
2020-10-16Enable IPv6 WriteHeaderIncludedPacketGhanan Gowripalan
Allow writing an IPv6 packet where the IPv6 header is a provided by the user. * Introduce an error to let callers know a header is malformed. We previously useed tcpip.ErrInvalidOptionValue but that did not seem appropriate for generic malformed header errors. * Populate network header in WriteHeaderIncludedPacket IPv4's implementation of WriteHeaderIncludedPacket did not previously populate the packet buffer's network header. This change fixes that. Fixes #4527 Test: ip_test.TestWriteHeaderIncludedPacket PiperOrigin-RevId: 337534548
2020-10-16Merge release-20201005.0-87-gc002fc36f (automated)gVisor bot
2020-10-15sockets: ignore io.EOF from view.ReadAtAndrei Vagin
Reported-by: syzbot+5466463b7604c2902875@syzkaller.appspotmail.com PiperOrigin-RevId: 337451896
2020-10-15Merge release-20201005.0-83-g3269cefd6 (automated)gVisor bot
2020-10-15Process NAs without target link-layer addressesSam Balana
RFC 4861 section 4.4 comments the Target link-layer address option is sometimes optional in a Neighbor Advertisement packet: "When responding to a unicast Neighbor Solicitation this option SHOULD be included." Tests: pkg/tcpip/stack:stack_test - TestEntryStaleToReachableWhenSolicitedConfirmationWithoutAddress - TestEntryDelayToReachableWhenSolicitedConfirmationWithoutAddress - TestEntryProbeToReachableWhenSolicitedConfirmationWithoutAddress pkg/tcpip/network/ipv6:ipv6_test - TestCallsToNeighborCache PiperOrigin-RevId: 337396493
2020-10-15Change verity isEnable to be a member of dentryChong Cai
PiperOrigin-RevId: 337384146
2020-10-15Refactor compareFragments to follow Go styleArthur Sfez
Test helpers should be used for test setup/teardown, not actual testing. Use cmp.Diff instead of bytes.Equal to improve readability. PiperOrigin-RevId: 337323242
2020-10-14Merge release-20200928.0-117-g6e6a9d3f3 (automated)gVisor bot
2020-10-14Find route before sending NA responseGhanan Gowripalan
This change also brings back the stack.Route.ResolveWith method so that we can immediately resolve a route when sending an NA in response to a a NS with a source link layer address option. Test: ipv6_test.TestNeighorSolicitationResponse PiperOrigin-RevId: 337185461
2020-10-14Merge release-20200928.0-116-gfc1e65397 (automated)gVisor bot
2020-10-14Fix SCM Rights reference leaks.Dean Deng
Control messages should be released on Read (which ignores the control message) or zero-byte Send. Otherwise, open fds sent through the control messages will be leaked. PiperOrigin-RevId: 337110774
2020-10-14Merge release-20200928.0-115-ga7b7b7b98 (automated)gVisor bot
2020-10-14Fix shm reference leak.Dean Deng
All shm segments in an IPC namespace should be released once that namespace is destroyed. Add reference counting to IPCNamespace so that once the last task with a reference on it exits, we can trigger a destructor that will clean up all shm segments that have not been explicitly freed by the application. PiperOrigin-RevId: 337032977
2020-10-13Merge release-20200928.0-113-g7eeeff426 (automated)gVisor bot
2020-10-13Merge pull request #4482 from lemin9538:lemin_arm64gVisor bot
PiperOrigin-RevId: 336976081
2020-10-13Merge release-20200928.0-111-g443e3cad4 (automated)gVisor bot
2020-10-13Merge pull request #4486 from patr0nus:master_udp_ep_fixgVisor bot
PiperOrigin-RevId: 336974095
2020-10-13Merge pull request #4386 from lubinszARM:pr_testutil_tls_usrgVisor bot
PiperOrigin-RevId: 336970511
2020-10-13Merge release-20200928.0-107-gb99f15e06 (automated)gVisor bot
2020-10-13Merge pull request #4374 from lubinszARM:pr_ffmpeg_kvm_01gVisor bot
PiperOrigin-RevId: 336962937
2020-10-13Merge release-20200928.0-105-g51913ba40 (automated)gVisor bot
2020-10-13Correct NA minimum sizeSam Balana
Remove the duplicate NA size variable while I'm here. See https://tools.ietf.org/html/rfc4861#section-4.4 for the packet format. PiperOrigin-RevId: 336943206
2020-10-13Merge release-20200928.0-104-g1a6948737 (automated)gVisor bot
2020-10-13Don't read beyond EOF when inserting into sentry page cache.Jamie Liu
The sentry page cache stores file contents at page granularity; this is necessary for memory mappings. Thus file offset ranges passed to fsutil.FileRangeSet.Fill() must be page-aligned. If the read callback passed to Fill() returns (partial read, nil error) when reading up to EOF (which is the case for p9.ClientFile.ReadAt() since 9P's Rread cannot convey both a partial read and EOF), Fill() will re-invoke the read callback to try to read from EOF to the end of the containing page, which is harmless but needlessly expensive. Fix this by handling file size explicitly in fsutil.FileRangeSet.Fill(). PiperOrigin-RevId: 336934075
2020-10-13Merge release-20200928.0-103-g7053f1785 (automated)gVisor bot
2020-10-13Use NDP option serializer instead of handcrafting the NSTamir Duberstein
Use the correct constant (Solicit, not Advert) while I'm here. PiperOrigin-RevId: 336924605
2020-10-13Merge release-20200928.0-102-g432963dd2 (automated)gVisor bot
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