From c013c9a1d796d1feae143f02b3c654f0a42f7055 Mon Sep 17 00:00:00 2001
From: Greg Kurz <groug@kaod.org>
Date: Thu, 4 Feb 2021 20:24:28 +0100
Subject: [PATCH] virtiofsd: Add restart_syscall to the seccomp whitelist

This is how linux restarts some system calls after SIGSTOP/SIGCONT.
This is needed to avoid virtiofsd termination when resuming execution
under GDB for example.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <20210201193305.136390-1-groug@kaod.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 tools/virtiofsd/seccomp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/virtiofsd/seccomp.c b/tools/virtiofsd/seccomp.c
index 57642ff8..004f5026 100644
--- a/tools/virtiofsd/seccomp.c
+++ b/tools/virtiofsd/seccomp.c
@@ -91,6 +91,7 @@ static const int syscall_whitelist[] = {
     SCMP_SYS(renameat),
     SCMP_SYS(renameat2),
     SCMP_SYS(removexattr),
+    SCMP_SYS(restart_syscall),
     SCMP_SYS(rt_sigaction),
     SCMP_SYS(rt_sigprocmask),
     SCMP_SYS(rt_sigreturn),
-- 
2.29.2

