diff --git a/LibOS/shim/test/ltp/ltp.cfg b/LibOS/shim/test/ltp/ltp.cfg
index 01ef8e46..d99dc04f 100644
--- a/LibOS/shim/test/ltp/ltp.cfg
+++ b/LibOS/shim/test/ltp/ltp.cfg
@@ -110,8 +110,16 @@ skip = yes
 [chown*]
 skip = yes
 
-# no chroot()
-[chroot*]
+# no seteuid()
+[chroot01]
+skip = yes
+
+# no symlink()
+[chroot03]
+skip = yes
+
+# hangs, no setuid(), rmdir() failing
+[chroot04]
 skip = yes
 
 # no adjtime()
@@ -122,10 +130,6 @@ skip = yes
 [clock_gettime03]
 skip = yes
 
-# measures difference between successive reading, fails from time to time because it's >5 ms
-[clock_gettime04]
-skip = yes
-
 # 4. after SIGINT, remaining time > requested time
 [clock_nanosleep01]
 timeout = 40
@@ -134,11 +138,6 @@ must-pass =
     2
     3
 
-# tries to set /dev/cpu_dma_latency
-# sleeps for too long (mean above threshold)
-[clock_nanosleep02]
-skip = yes
-
 # kernel config
 [clock_nanosleep03]
 skip = yes
@@ -583,22 +582,15 @@ skip = yes
 [flock*]
 skip = yes
 
-[fork02]
-timeout = 40
-
 # %fs test, i386 only
 [fork05]
 skip = yes
 
-# forks 1000 times, times out sometimes
-[fork06]
-skip = yes
-
-# forks 100 times, times out sometimes
+# sometimes fails with "x/100 children didn't read correctly from an inheritted fd"
 [fork07]
 skip = yes
 
-# bad read from a shared FD?
+# expect fd to share file offset in parent and child (unsupported)
 [fork10]
 skip = yes
 
@@ -684,7 +676,7 @@ skip = yes
 [futex_cmp_requeue01]
 skip = yes
 
-# no shm_open()
+# always fails to open /proc/PID/stat, but the whole test fails only sometimes
 [futex_wait02]
 skip = yes
 
@@ -761,8 +753,12 @@ skip = yes
 [gethostid01]
 skip = yes
 
-# no getitimer()
-[getitimer*]
+# only ITIMER_REAL is supported
+[getitimer01]
+skip = yes
+
+# only ITIMER_REAL is supported
+[getitimer03]
 skip = yes
 
 # 3, 4. getpgid(getppid()) -> getpgid(1) fails with ESRCH
@@ -777,13 +773,6 @@ must-pass =
 [getpgid02]
 skip = yes
 
-[getpid02]
-timeout = 40
-
-# fork()ed process has the same ppid as parent
-[getppid02]
-skip = yes
-
 # getpriority() has a dummy implementation that always returns the same value
 [getpriority02]
 skip = yes
@@ -932,7 +921,7 @@ skip = yes
 [kill05]
 skip = yes
 
-# SIGKILL, times out
+# process groups unsupported
 [kill06]
 skip = yes
 
@@ -940,18 +929,14 @@ skip = yes
 [kill07]
 skip = yes
 
+# process groups unsupported
 [kill08]
 skip = yes
 
-[kill09]
-timeout = 80
-
+# process groups unsupported
 [kill10]
 skip = yes
 
-[kill11]
-skip = yes
-
 # no lchown()
 [lchown*]
 skip = yes
@@ -1381,9 +1366,6 @@ skip = yes
 [nanosleep02]
 skip = yes
 
-[nanosleep04]
-skip = yes
-
 [nftw01]
 skip = yes
 
@@ -1504,15 +1486,9 @@ skip = yes
 [pipe03]
 skip = yes
 
-[pipe06]
-skip = yes
-
 [pipe07]
 skip = yes
 
-[pipe08]
-skip = yes
-
 [pipe11]
 must-pass =
     1
@@ -1920,18 +1896,6 @@ skip = yes
 [sbrk03]
 skip = yes
 
-[sched_get_priority_max01]
-skip = yes
-
-[sched_get_priority_max02]
-skip = yes
-
-[sched_get_priority_min01]
-skip = yes
-
-[sched_get_priority_min02]
-skip = yes
-
 [sched_getaffinity01]
 must-pass =
     1
@@ -2084,12 +2048,6 @@ skip = yes
 [sendfile07_64]
 skip = yes
 
-[sendfile08]
-skip = yes
-
-[sendfile08_64]
-skip = yes
-
 [sendfile09]
 skip = yes
 
@@ -2128,9 +2086,6 @@ skip = yes
 [set_mempolicy*]
 skip = yes
 
-[set_robust_list01]
-skip = yes
-
 [set_thread_area01]
 skip = yes
 
@@ -2214,9 +2169,6 @@ must-pass =
 [setgroups03_16]
 skip = yes
 
-[setgroups04]
-skip = yes
-
 [setgroups04_16]
 skip = yes
 
@@ -2224,9 +2176,6 @@ skip = yes
 [sethostname03]
 skip = yes
 
-[setitimer02]
-skip = yes
-
 [setitimer03]
 skip = yes
 
@@ -2395,9 +2344,6 @@ skip = yes
 must-pass =
     1
 
-[sigrelse01]
-skip = yes
-
 [sigtimedwait01]
 skip = yes
 
@@ -2618,16 +2564,15 @@ skip = yes
 [tee02]
 skip = yes
 
+# timeouts on test cleanup
 [tgkill01]
 must-pass =
     1
 
+# RLIMIT_SIGPENDING not supported
 [tgkill02]
 skip = yes
 
-[tgkill03]
-skip = yes
-
 # no timer_create()
 [timer_create*]
 skip = yes
@@ -2771,36 +2716,35 @@ skip = yes
 [waitid02]
 skip = yes
 
-[waitpid03]
-timeout = 80
-
-[waitpid04]
-skip = yes
-
-[waitpid05]
-timeout = 240
-
+# uses futexes on memory shared between processes - unsupported
 [waitpid06]
 skip = yes
 
+# uses futexes on memory shared between processes - unsupported
 [waitpid07]
 skip = yes
 
+# uses futexes on memory shared between processes - unsupported
 [waitpid08]
 skip = yes
 
+# uses futexes on memory shared between processes - unsupported
 [waitpid09]
 skip = yes
 
+# uses futexes on memory shared between processes - unsupported
 [waitpid10]
 skip = yes
 
+# uses futexes on memory shared between processes - unsupported
 [waitpid11]
 skip = yes
 
+# uses futexes on memory shared between processes - unsupported
 [waitpid12]
 skip = yes
 
+# uses futexes on memory shared between processes - unsupported
 [waitpid13]
 skip = yes
 
@@ -2812,12 +2756,3 @@ timeout = 40
 
 [write04]
 skip = yes
-
-[writev02]
-skip = yes
-
-[writev05]
-skip = yes
-
-[writev06]
-skip = yes