runsc/boot/filter: permit SYS_TIME for race

glibc's malloc also uses SYS_TIME. Permit it.

#0  0x0000000000de6267 in time ()
#1  0x0000000000db19d8 in get_nprocs ()
#2  0x0000000000d8a31a in arena_get2.part ()
#3  0x0000000000d8ab4a in malloc ()
google#4  0x0000000000d3c6b5 in __sanitizer::InternalAlloc(unsigned long, __sanitizer::SizeClassAllocatorLocalCache<__sanitizer::SizeClassAllocator32<0ul, 140737488355328ull, 0ul, __sanitizer::SizeClassMap<3ul, 4ul, 8ul, 17ul, 64ul, 14ul>, 20ul, __sanitizer::TwoLevelByteMap<32768ull, 4096ull, __sanitizer::NoOpMapUnmapCallback>, __sanitizer::NoOpMapUnmapCallback> >*, unsigned long) ()
google#5  0x0000000000d4cd70 in __tsan_go_start ()
google#6  0x00000000004617a3 in racecall ()
google#7  0x00000000010f4ea0 in runtime.findfunctab ()
google#8  0x000000000043f193 in runtime.racegostart ()

Signed-off-by: Dmitry Vyukov <[email protected]>
[[email protected]: updated comments and commit message]
Signed-off-by: Michael Pratt <[email protected]>

Change-Id: Ibe2d0dc3035bf5052d5fb802cfaa37c5e0e7a09a
PiperOrigin-RevId: 203042627

Author: dvyukov

runsc/boot/filter/extra_filters_race.go

@@ -34,5 +34,7 @@ func instrumentationFilters() seccomp.SyscallRules {
 		syscall.SYS_NANOSLEEP:       {},
 		syscall.SYS_OPEN:            {},
 		syscall.SYS_SET_ROBUST_LIST: {},
+		// Used within glibc's malloc.
+		syscall.SYS_TIME: {},
 	}
 }