gvisor

Author	SHA1	Message	Date
Andrei Vagin	17c18241cd	platform/syscall: use syscall + int3 to execute a system call in a stub process Right now, we need to call ptrace(PTRACE_SYSCALL) and wait() twice to execute one system call in a stub process. With these changes, we will need to call ptrace + wait only once. In addition, this allows to workaround the kernel bug when a stub process doesn't stop on syscall-exit-stop and starts executing the next system call. Reported-by: syzbot+37143cafa8dc3b5008ee@syzkaller.appspotmail.com PiperOrigin-RevId: 288393029	2020-01-06 15:54:53 -08:00
Michael Pratt	91f1ac7319	Mark enableCpuidFault nosplit This is called after fork, so it must be nosplit. Updates #1408 PiperOrigin-RevId: 286053054	2019-12-17 14:18:54 -08:00
Haibo Xu	03760e5623	platform/ptrace: make some operations arch specific Make the patchSignalInfo/cpuid faulting/initial thread seccomp rules operations architecture dependent. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: Iaf692dbe3700d2e01168ec2f1b4beeda9136fd62	2019-12-03 07:17:34 +00:00
Haibo Xu	1c9da886e7	Add initial ptrace stub and syscall support for arm64. Signed-off-by: Haibo Xu <haibo.xu@arm.com> Change-Id: I1dbd23bb240cca71d0cc30fc75ca5be28cb4c37c PiperOrigin-RevId: 262619519	2019-08-09 13:18:11 -07:00