diff options
| author | Andrei Vagin <avagin@google.com> | 2019-08-16 17:32:20 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-08-16 17:33:28 -0700 |
| commit | 2a1303357c3d928cca95601241fc16baca0e5f41 (patch) | |
| tree | 1aa52744b2cd689ae8de273a855beda6f4c80ad0 | |
| parent | f7114e0a27db788af512af8678595954996bcd7f (diff) | |
ptrace: detect if a stub process exited unexpectedly
PiperOrigin-RevId: 263880577
| -rw-r--r-- | pkg/sentry/platform/ptrace/subprocess.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/platform/ptrace/subprocess.go b/pkg/sentry/platform/ptrace/subprocess.go index 79501682d..6bf7cd097 100644 --- a/pkg/sentry/platform/ptrace/subprocess.go +++ b/pkg/sentry/platform/ptrace/subprocess.go @@ -354,6 +354,9 @@ func (t *thread) wait(outcome waitOutcome) syscall.Signal { continue // Spurious stop. } if stopSig == syscall.SIGTRAP { + if status.TrapCause() == syscall.PTRACE_EVENT_EXIT { + t.dumpAndPanic("wait failed: the process exited") + } // Re-encode the trap cause the way it's expected. return stopSig | syscall.Signal(status.TrapCause()<<8) } |