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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-20200928.0-55-g1336af78d (automated)gVisor bot
2020-10-06Implement membarrier(2) commands other than *_SYNC_CORE.Jamie Liu
Updates #267 PiperOrigin-RevId: 335713923
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-20200928.0-49-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
2020-10-05Merge release-20200928.0-41-g1c1eefbd4 (automated)gVisor bot
2020-10-05Merge pull request #4368 from zhlhahaha:1979gVisor bot
PiperOrigin-RevId: 335492800
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-20200921.0-99-g02cff90ad (automated)gVisor bot
2020-10-02Merge pull request #4035 from lubinszARM:pr_misc_01gVisor bot
PiperOrigin-RevId: 335051794
2020-10-01Add a verity test for modified parent Merkle fileChong Cai
When a child's root hash or its Merkle path is modified in its parent's Merkle tree file, opening the file should fail, provided the directory is verity enabled. The test for this behavior is added. PiperOrigin-RevId: 334963690
2020-10-01Merge release-20200921.0-96-gcb41f6703 (automated)gVisor bot
2020-09-30Merge pull request #3824 from btw616:fix/issue-3823gVisor bot
PiperOrigin-RevId: 334721453
2020-09-30Merge release-20200921.0-93-g6f8d64f42 (automated)gVisor bot
2020-09-30ip6tables: redirect supportKevin Krakauer
Adds support for the IPv6-compatible redirect target. Redirection is a limited form of DNAT, where the destination is always the localhost. Updates #3549. PiperOrigin-RevId: 334698344
2020-09-30Implement ioctl with measure in verity fsChong Cai
PiperOrigin-RevId: 334682753
2020-09-30Internal change.Chong Cai
PiperOrigin-RevId: 334678513
2020-09-30Merge release-20200921.0-89-g9751044a9 (automated)gVisor bot
2020-09-30Merge pull request #2256 from laijs:kptigVisor bot
PiperOrigin-RevId: 334674481
2020-09-30[go-marshal] Port ext codebase to use go marshal.Ayush Ranjan
PiperOrigin-RevId: 334656292
2020-09-30Merge release-20200921.0-80-gb49a17fc3 (automated)gVisor bot
2020-09-30Make all Target.Action implementation pointer receiversKevin Krakauer
PiperOrigin-RevId: 334652998
2020-09-30Add verity fs testsChong Cai
The tests confirms that when a file is opened in verity, the corresponding Merkle trees are generated. Also a normal read succeeds on verity enabled files, but fails if either the verity file or the Merkle tree file is modified. PiperOrigin-RevId: 334640331
2020-09-30Merge release-20200921.0-77-g0aae51c6e (automated)gVisor bot
2020-09-29iptables: remove unused min/max NAT range fieldsKevin Krakauer
PiperOrigin-RevId: 334531794
2020-09-30Merge release-20200921.0-74-g387501219 (automated)gVisor bot
2020-09-29Replace remaining uses of reflection-based marshalling.Rahat Mahmood
- Rewrite arch.Stack.{Push,Pop}. For the most part, stack now implements marshal.CopyContext and can be used as the target of marshal operations. Stack.Push had some extra logic for automatically null-terminating slices. This was only used for two specific types of slices, and is now handled explicitly. - Delete usermem.CopyObject{In,Out}. - Replace most remaining uses of the encoding/binary package with go-marshal. Most of these were using the binary package to compute the size of a struct, which go-marshal can directly replace. ~3 uses of the binary package remain. These aren't reasonably replaceable by go-marshal: for example one use is to construct the syscall trampoline for systrap. - Fill out remaining convenience wrappers in the primitive package. PiperOrigin-RevId: 334502375
2020-09-29Merge release-20200921.0-72-g6ae83404a (automated)gVisor bot
2020-09-29Don't allow broadcast/multicast source addressGhanan Gowripalan
As per relevant IP RFCS (see code comments), broadcast (for IPv4) and multicast addresses are not allowed. Currently checks for these are done at the transport layer, but since it is explicitly forbidden at the IP layers, check for them there. This change also removes the UDP.InvalidSourceAddress stat since there is no longer a need for it. Test: ip_test.TestSourceAddressValidation PiperOrigin-RevId: 334490971
2020-09-29Merge release-20200921.0-71-g4a428b13b (automated)gVisor bot
2020-09-29Add /proc/[pid]/cwdFabricio Voznika
PiperOrigin-RevId: 334478850
2020-09-29Merge release-20200921.0-70-g7fbb45e8e (automated)gVisor bot
2020-09-29iptables: refactor to make targets extendableKevin Krakauer
Like matchers, targets should use a module-like register/lookup system. This replaces the brittle switch statements we had before. The only behavior change is supporing IPT_GET_REVISION_TARGET. This makes it much easier to add IPv6 redirect in the next change. Updates #3549. PiperOrigin-RevId: 334469418
2020-09-29Merge release-20200921.0-66-g7d64bc1fd (automated)gVisor bot
2020-09-29Merge pull request #3875 from btw616:fix/issue-3874gVisor bot
PiperOrigin-RevId: 334428344
2020-09-29Merge release-20200921.0-59-g028e045da (automated)gVisor bot
2020-09-29add related arm64 syscall for vfs2Howard Zhang
arm64 vfs2: Add support for io_submit/fallocate/ sendfile/newfstatat/readahead/fadvise64 Signed-off-by: Howard Zhang <howard.zhang@arm.com>
2020-09-28Merge release-20200921.0-57-g237b761f9 (automated)gVisor bot
2020-09-28Merge release-20200921.0-58-gba44298a3 (automated)gVisor bot
2020-09-28Don't leak dentries returned by sockfs.NewDentry().Jamie Liu
PiperOrigin-RevId: 334263322
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