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PiperOrigin-RevId: 299238067
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PiperOrigin-RevId: 299233818
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gofer.dentryReadWriter.WriteFromBlocks was not updating
gofer.dentry.size after a write operation that skips the
cache.
Updates #1198
PiperOrigin-RevId: 298708646
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The support of PTRACE_SYSEMU on arm64 was added in the 5.3 kernel,
so we can be sure that the current version is higher that 5.3.
And this change moves vsyscall seccomp rules to the arch specific file,
because vsyscall isn't supported on arm64.
PiperOrigin-RevId: 298696493
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PiperOrigin-RevId: 298476533
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PiperOrigin-RevId: 298405064
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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
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PiperOrigin-RevId: 298380654
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PiperOrigin-RevId: 297982488
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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
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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>
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Signed-off-by: Andrei Vagin <avagin@gmail.com>
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A follow-up change will convert the networking code to use this standard
pipe implementation.
PiperOrigin-RevId: 297903206
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/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
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We changed syscalls to allow dup3 for ARM64.
Updates #1198
PiperOrigin-RevId: 297870816
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PiperOrigin-RevId: 297674924
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PiperOrigin-RevId: 297638665
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PiperOrigin-RevId: 297494373
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PiperOrigin-RevId: 297492004
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Analogous to Linux's kern_mount().
PiperOrigin-RevId: 297259580
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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
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PiperOrigin-RevId: 297230721
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PiperOrigin-RevId: 297220008
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PiperOrigin-RevId: 297192390
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PiperOrigin-RevId: 297191168
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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
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PiperOrigin-RevId: 297175316
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Fixes #1049
PiperOrigin-RevId: 297175164
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Each mount is holds a reference on a root Dirent, but the mount itself may
live beyond it's own reference. This means that a call to Root() can come
after the associated reference has been dropped.
Instead of introducing a separate layer of references for mount objects,
we simply change the Root() method to use TryIncRef() and allow it to return
nil if the mount is already gone. This requires updating a small number of
callers and minimizes the change (since VFSv2 will replace this code shortly).
PiperOrigin-RevId: 297174230
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PiperOrigin-RevId: 296526279
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TCP/IP will work with netstack networking. hostinet doesn't work, and sockets
will have the same behavior as it is now.
Before the userspace is able to create device, the default loopback device can
be used to test.
/proc/net and /sys/net will still be connected to the root network stack; this
is the same behavior now.
Issue #1833
PiperOrigin-RevId: 296309389
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Users of the API only care about whether the copy in/out succeeds in
their entirety, which is already signalled by the returned error.
PiperOrigin-RevId: 296297843
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Example:
epoll_ctl(0x3 anon_inode:[eventpoll], EPOLL_CTL_ADD, 0x6 anon_inode:[eventfd], 0x7efe2fd92a80 {events=EPOLLIN|EPOLLOUT data=0x10203040506070a}) = 0x0 (4.411µs)
epoll_wait(0x3 anon_inode:[eventpoll], 0x7efe2fd92b50 {{events=EPOLLOUT data=0x102030405060708}{events=EPOLLOUT data=0x102030405060708}{events=EPOLLOUT data=0x102030405060708}}, 0x3, 0xffffffff) = 0x3 (29.891µs)
PiperOrigin-RevId: 296258146
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tmpfs.fileDescription now implements ConfigureMMap. And tmpfs.regularFile
implement memmap.Mappable. The methods are mostly unchanged from VFS1 tmpfs.
PiperOrigin-RevId: 296234557
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This patch defines the structures and
adds the implementations for fpsimd initialization.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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Consistent with QEMU, getUserRegisters() should be an arch-specific
function. So, it should be called in dieArchSetup().
With this patch and the pagetable/pcid patch, the kvm modules on Arm64 can be
built successfully.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 296088213
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Added the ability to get/set the IP_RECVTCLASS socket option on UDP endpoints.
If enabled, traffic class from the incoming Network Header passed as ancillary
data in the ControlMessages.
Adding Get/SetSockOptBool to decrease the overhead of getting/setting simple
options. (This was absorbed in a CL that will be landing before this one).
Test:
* Added unit test to udp_test.go that tests getting/setting as well as
verifying that we receive expected TOS from incoming packet.
* Added a syscall test for verifying getting/setting
* Removed test skip for existing syscall test to enable end to end test.
PiperOrigin-RevId: 295840218
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- Redocument memory ordering from "no ordering" to "acquire-release". (No
functional change: both LOCK WHATEVER on x86, and LDAXR/STLXR loops on ARM64,
already have this property.)
- Remove IncUnlessZeroInt32 and DecUnlessOneInt32, which were only faster than
the equivalent loops using sync/atomic before the Go compiler inlined
non-unsafe.Pointer atomics many releases ago.
PiperOrigin-RevId: 295811743
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PiperOrigin-RevId: 295785052
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PiperOrigin-RevId: 295770717
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glibc defines struct epoll_event in such a way that epoll_event.data.fd exists.
However, the kernel's definition of struct epoll_event makes epoll_event.data
an opaque uint64, so naming half of it "fd" just introduces confusion. Remove
the Fd field, and make Data a [2]int32 to compensate.
Also add required padding to linux.EpollEvent on ARM64.
PiperOrigin-RevId: 295250424
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This is to fix a data race between sending an external signal to
a ThreadGroup and kernel saving state for S/R.
PiperOrigin-RevId: 295244281
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This is easier than storing errors from e.g. CopyOut in the callback.
PiperOrigin-RevId: 295230021
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PiperOrigin-RevId: 295226468
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This saves one pointer dereference per VFS access.
Updates #1623
PiperOrigin-RevId: 295216176
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This requires fixing a few build issues for non-am64 platforms.
PiperOrigin-RevId: 295196922
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- Added fsbridge package with interface that can be used to open
and read from VFS1 and VFS2 files.
- Converted ELF loader to use fsbridge
- Added VFS2 types to FSContext
- Added vfs.MountNamespace to ThreadGroup
Updates #1623
PiperOrigin-RevId: 295183950
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For kvm test case "TestKernelSyscall",
redpill/syscall(-1) in guest kernel level will be trapped in el1_svc.
And in el1_svc, we use mmio_exit to leave the guest.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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