chrony/chrony-seccomp.patch
Miroslav Lichvar 3df34ef6f4 update to 4.2 (#2051441)
Resolves: #2051441
2022-03-23 15:51:45 +01:00

32 lines
1.1 KiB
Diff

commit 8bb8f15a7d049ed26c69d95087065b381f76ec4d
Author: Michael Hudson-Doyle <michael.hudson@canonical.com>
Date: Wed Feb 9 09:06:13 2022 +0100
sys_linux: allow rseq in seccomp filter
Libc 2.35 will use rseq syscalls [1][2] by default and thereby
break chrony in seccomp isolation.
[1]: https://www.efficios.com/blog/2019/02/08/linux-restartable-sequences/
[2]: https://sourceware.org/pipermail/libc-alpha/2022-February/136040.html
Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Signed-off-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
diff --git a/sys_linux.c b/sys_linux.c
index 9cab2efa..cc3c9311 100644
--- a/sys_linux.c
+++ b/sys_linux.c
@@ -497,6 +497,9 @@ SYS_Linux_EnableSystemCallFilter(int level, SYS_ProcessContext context)
SCMP_SYS(getrlimit),
SCMP_SYS(getuid),
SCMP_SYS(getuid32),
+#ifdef __NR_rseq
+ SCMP_SYS(rseq),
+#endif
SCMP_SYS(rt_sigaction),
SCMP_SYS(rt_sigreturn),
SCMP_SYS(rt_sigprocmask),