| Age | Commit message (Collapse) | Author |
|---|
|
|
|
Use maybeSendSegment while sending segments in RACK recovery which checks if
the receiver has space and splits the segments when the segment size is
greater than MSS.
PiperOrigin-RevId: 359641097
|
|
|
|
- open flags can be different on different OSs, by putting SetNonblocking into
the posix_server rather than the testbench, we can always get the right value
for O_NONBLOCK
- merged the tcp_queue_{send,receive}_in_syn_sent into a single file
PiperOrigin-RevId: 359620630
|
|
|
|
Prevents the following deadlock:
- Raw packet is sent via e.Write(), which read locks e.mu
- Connect() is called, blocking on write locking e.mu
- The packet is routed to loopback and back to e.HandlePacket(), which read
locks e.mu
Per the atomic.RWMutex documentation, this deadlocks:
"If a goroutine holds a RWMutex for reading and another goroutine might call
Lock, no goroutine should expect to be able to acquire a read lock until the
initial read lock is released. In particular, this prohibits recursive read
locking. This is to ensure that the lock eventually becomes available; a blocked
Lock call excludes new readers from acquiring the lock."
Also, release eps.mu earlier in deliverRawPacket.
PiperOrigin-RevId: 359600926
|
|
|
|
PiperOrigin-RevId: 359591577
|
|
|
|
This will fix debian packaging.
Updates #5510
PiperOrigin-RevId: 359563378
|
|
|
|
sync.WaitGroup.Add(positive delta) is illegal if the WaitGroup counter is zero
and WaitGroup.Wait() may be called concurrently. This is problematic for
p9.connState.pendingWg, which counts inflight requests (so transitions from
zero are normal) and is waited-upon when receiving from the underlying Unix
domain socket returns an error, e.g. during connection shutdown. (Even if the
socket has been closed, new requests can still be concurrently received via
flipcall channels.)
PiperOrigin-RevId: 359416057
|
|
|
|
Fixes #5490
PiperOrigin-RevId: 359401532
|
|
|
|
One precondition of VFS.PrepareRenameAt is that the `from` and `to` dentries
are not the same. Kernfs was not checking this, which could lead to a deadlock.
PiperOrigin-RevId: 359385974
|
|
|
|
Before this CL, VFS2's overlayfs uses a single private device number and an
autoincrementing generated inode number for directories; this is consistent
with Linux's overlayfs in the non-samefs non-xino case. However, this breaks
some applications more consistently than on Linux due to more aggressive
caching of Linux overlayfs dentries.
Switch from using mapped device numbers + the topmost layer's inode number for
just non-copied-up non-directory files, to doing so for all files. This still
allows directory dev/ino numbers to change across copy-up, but otherwise keeps
them consistent.
Fixes #5545:
```
$ docker run --runtime=runsc-vfs2-overlay --rm ubuntu:focal bash -c "mkdir -p 1/2/3/4/5/6/7/8 && rm -rf 1 && echo done"
done
```
PiperOrigin-RevId: 359350716
|
|
|
|
Previously, when DAD would detect a conflict for a temporary address,
the address would be removed but its timers would not be stopped,
resulting in a panic when the removed address's invalidation timer
fired.
While I'm here, remove the check for unicast-ness on removed address
endpoints since multicast addresses are no longer stored in the same
structure as unicast addresses as of 27ee4fe76ad586ac8751951a842b3681f93.
Test: stack_test.TestMixedSLAACAddrConflictRegen
PiperOrigin-RevId: 359344849
|
|
|
|
- Use atomic add rather than CAS in every Gate method, which is slightly
faster in most cases.
- Implement Close wakeup using gopark/goready to avoid channel allocation.
New benchmarks:
name old time/op new time/op delta
GateEnterLeave-12 16.7ns ± 1% 10.3ns ± 1% -38.44% (p=0.000 n=9+8)
GateClose-12 50.2ns ± 8% 42.4ns ± 6% -15.44% (p=0.000 n=10+10)
GateEnterLeaveAsyncClose-12 972ns ± 2% 640ns ± 7% -34.15% (p=0.000 n=9+10)
PiperOrigin-RevId: 359336344
|
|
|
|
PiperOrigin-RevId: 359334029
|
|
|
|
Syzkaller hosts contains many audit messages that runsc tries
to call the clock_nanosleep syscall.
PiperOrigin-RevId: 359331413
|
|
`runsc ps` currently return pid for a task's immediate pid namespace,
which is confusing when there're multiple pid namespaces. We should
return only pids in the root namespace.
Before:
```
1000 1 0 0 ? 02:24 250ms chrome
1000 1 0 0 ? 02:24 40ms dumb-init
1000 1 0 0 ? 02:24 240ms chrome
1000 2 1 0 ? 02:24 2.78s node
```
After:
```
UID PID PPID C TTY STIME TIME CMD
1000 1 0 0 ? 12:35 0s dumb-init
1000 2 1 7 ? 12:35 240ms node
1000 13 2 21 ? 12:35 2.33s chrome
1000 27 13 3 ? 12:35 260ms chrome
```
Signed-off-by: Daniel Dao <dqminh@cloudflare.com>
|
|
|
|
Restrict ptrace(2) according to the default configurations of the YAMA security
module (mode 1), which is a common default among various Linux distributions.
The new access checks only permit the tracer to proceed if one of the following
conditions is met:
a) The tracer is already attached to the tracee.
b) The target is a descendant of the tracer.
c) The target has explicitly given permission to the tracer through the
PR_SET_PTRACER prctl.
d) The tracer has CAP_SYS_PTRACE.
See security/yama/yama_lsm.c for more details.
Note that these checks are added to CanTrace, which is checked for
PTRACE_ATTACH as well as some other operations, e.g., checking a process'
memory layout through /proc/[pid]/mem.
Since this patch adds restrictions to ptrace, it may break compatibility for
applications run by non-root users that, for instance, rely on being able to
trace processes that are not descended from the tracer (e.g., `gdb -p`). YAMA
restrictions can be turned off by setting /proc/sys/kernel/yama/ptrace_scope
to 0, or exceptions can be made on a per-process basis with the PR_SET_PTRACER
prctl.
Reported-by: syzbot+622822d8bca08c99e8c8@syzkaller.appspotmail.com
PiperOrigin-RevId: 359237723
|
|
|
|
PiperOrigin-RevId: 359235699
|
|
|
|
Only detect and mitigate on mds for the mitigate command.
PiperOrigin-RevId: 358924466
|
|
|
|
Updates #3481
Closes #5430
PiperOrigin-RevId: 358923208
|
|
|
|
PiperOrigin-RevId: 358890980
|
|
|
|
Reported-by: syzbot+f2489ba0b999a45d1ad1@syzkaller.appspotmail.com
PiperOrigin-RevId: 358866218
|
|
|
|
Previously, loader.signalProcess was inconsitently using both root and
container's PID namespace to find the process. It used root namespace
for the exec'd process and container's PID namespace for other processes.
This fixes the code to use the root PID namespace across the board, which
is the same PID reported in `runsc ps` (or soon will after
https://github.com/google/gvisor/pull/5519).
PiperOrigin-RevId: 358836297
|
|
|
|
This removes a three-lock deadlock between fdnotifier.notifier.mu,
epoll.EventPoll.listsMu, and baseEndpoint.mu.
A lock order comment was added to epoll/epoll.go.
Also fix unsafe access of baseEndpoint.connected/receiver.
PiperOrigin-RevId: 358515191
|
|
|
|
fio should scale by written/read bytes and not iterate runs
of the fio container.
PiperOrigin-RevId: 358511771
|
|
|
|
PiperOrigin-RevId: 358445320
|
|
|
|
PiperOrigin-RevId: 358354414
|
|
|
