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authorRahat Mahmood <rahat@google.com>2019-08-08 12:32:00 -0700
committergVisor bot <gvisor-bot@google.com>2019-08-08 12:33:11 -0700
commit13a98df49ea1b36cd21c528293b626a6a3639f0b (patch)
tree02170fcb8caf79ad519ee812ce9f8c5f1093501c /pkg/sentry/state
parent2e45d1696e41d9042164b1b05d0dcd39dd15dfce (diff)
netstack: Don't start endpoint goroutines too soon on restore.
Endpoint protocol goroutines were previously started as part of loading the endpoint. This is potentially too soon, as resources used by these goroutine may not have been loaded. Protocol goroutines may perform meaningful work as soon as they're started (ex: incoming connect) which can cause them to indirectly access resources that haven't been loaded yet. This CL defers resuming all protocol goroutines until the end of restore. PiperOrigin-RevId: 262409429
Diffstat (limited to 'pkg/sentry/state')
-rw-r--r--pkg/sentry/state/BUILD1
-rw-r--r--pkg/sentry/state/state.go5
2 files changed, 4 insertions, 2 deletions
diff --git a/pkg/sentry/state/BUILD b/pkg/sentry/state/BUILD
index f297ef3b7..88765f4d6 100644
--- a/pkg/sentry/state/BUILD
+++ b/pkg/sentry/state/BUILD
@@ -16,6 +16,7 @@ go_library(
"//pkg/log",
"//pkg/sentry/inet",
"//pkg/sentry/kernel",
+ "//pkg/sentry/time",
"//pkg/sentry/watchdog",
"//pkg/state/statefile",
"//pkg/syserror",
diff --git a/pkg/sentry/state/state.go b/pkg/sentry/state/state.go
index 026549756..9eb626b76 100644
--- a/pkg/sentry/state/state.go
+++ b/pkg/sentry/state/state.go
@@ -22,6 +22,7 @@ import (
"gvisor.dev/gvisor/pkg/log"
"gvisor.dev/gvisor/pkg/sentry/inet"
"gvisor.dev/gvisor/pkg/sentry/kernel"
+ "gvisor.dev/gvisor/pkg/sentry/time"
"gvisor.dev/gvisor/pkg/sentry/watchdog"
"gvisor.dev/gvisor/pkg/state/statefile"
"gvisor.dev/gvisor/pkg/syserror"
@@ -104,7 +105,7 @@ type LoadOpts struct {
}
// Load loads the given kernel, setting the provided platform and stack.
-func (opts LoadOpts) Load(k *kernel.Kernel, n inet.Stack) error {
+func (opts LoadOpts) Load(k *kernel.Kernel, n inet.Stack, clocks time.Clocks) error {
// Open the file.
r, m, err := statefile.NewReader(opts.Source, opts.Key)
if err != nil {
@@ -114,5 +115,5 @@ func (opts LoadOpts) Load(k *kernel.Kernel, n inet.Stack) error {
previousMetadata = m
// Restore the Kernel object graph.
- return k.LoadFrom(r, n)
+ return k.LoadFrom(r, n, clocks)
}