linux-stable.git/tools/testing, branch v4.19.48

selftests/bpf: ksym_search won't check symbols exists

2019-05-31T13:46:25+00:00

[ Upstream commit 0979ff7992fb6f4eb837995b12f4071dcafebd2d ]

Currently, ksym_search located at trace_helpers won't check symbols are
existing or not.

In ksym_search, when symbol is not found, it will return &syms[0](_stext).
But when the kernel symbols are not loaded, it will return NULL, which is
not a desired action.

This commit will add verification logic whether symbols are loaded prior
to the symbol search.

Signed-off-by: Daniel T. Lee 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin

selftests: cgroup: fix cleanup path in test_memcg_subtree_control()

2019-05-31T13:46:24+00:00

[ Upstream commit e14d314c7a489f060d6d691866fef5f131281718 ]

Dan reported, that cleanup path in test_memcg_subtree_control()
triggers a static checker warning:
  ./tools/testing/selftests/cgroup/test_memcontrol.c:76 \
  test_memcg_subtree_control()
  error: uninitialized symbol 'child2'.

Fix this by initializing child2 and parent2 variables and
split the cleanup path into few stages.

Signed-off-by: Roman Gushchin 
Fixes: 84092dbcf901 ("selftests: cgroup: add memory controller self-tests")
Reported-by: Dan Carpenter 
Cc: Dan Carpenter 
Cc: Shuah Khan (Samsung OSG) 
Cc: Mike Rapoport 
Signed-off-by: Shuah Khan 
Signed-off-by: Sasha Levin

selftests/bpf: set RLIMIT_MEMLOCK properly for test_libbpf_open.c

2019-05-31T13:46:08+00:00

[ Upstream commit 6cea33701eb024bc6c920ab83940ee22afd29139 ]

Test test_libbpf.sh failed on my development server with failure
  -bash-4.4$ sudo ./test_libbpf.sh
  [0] libbpf: Error in bpf_object__probe_name():Operation not permitted(1).
      Couldn't load basic 'r0 = 0' BPF program.
  test_libbpf: failed at file test_l4lb.o
  selftests: test_libbpf [FAILED]
  -bash-4.4$

The reason is because my machine has 64KB locked memory by default which
is not enough for this program to get locked memory.
Similar to other bpf selftests, let us increase RLIMIT_MEMLOCK
to infinity, which fixed the issue.

Signed-off-by: Yonghong Song 
Signed-off-by: Alexei Starovoitov 
Signed-off-by: Sasha Levin

Revert "selftests/bpf: skip verifier tests for unsupported program types"

2019-05-25T16:23:47+00:00

This reverts commit 118d38a3577f7728278f6afda8436af05a6bec7f which is
commit 8184d44c9a577a2f1842ed6cc844bfd4a9981d8e upstream.

Tommi reports that this patch breaks the build, it's not really needed
so let's revert it.

Reported-by: Tommi Rantala 
Cc: Stanislav Fomichev 
Cc: Sasha Levin 
Acked-by: Daniel Borkmann 
Signed-off-by: Greg Kroah-Hartman

selftests/net: correct the return value for run_netsocktests

2019-05-16T17:41:24+00:00

[ Upstream commit 30c04d796b693e22405c38e9b78e9a364e4c77e6 ]

The run_netsocktests will be marked as passed regardless the actual test
result from the ./socket:

    selftests: net: run_netsocktests
    ========================================
    --------------------
    running socket test
    --------------------
    [FAIL]
    ok 1..6 selftests: net: run_netsocktests [PASS]

This is because the test script itself has been successfully executed.
Fix this by exit 1 when the test failed.

Signed-off-by: Po-Hsu Lin 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

selftests: netfilter: check icmp pkttoobig errors are set as related

2019-05-16T17:41:23+00:00

[ Upstream commit becf2319f320cae43e20cf179cc51a355a0deb5f ]

When an icmp error such as pkttoobig is received, conntrack checks
if the "inner" header (header of packet that did not fit link mtu)
is matches an existing connection, and, if so, sets that packet as
being related to the conntrack entry it found.

It was recently reported that this "related" setting also works
if the inner header is from another, different connection (i.e.,
artificial/forged icmp error).

Add a test, followup patch will add additional "inner dst matches
outer dst in reverse direction" check before setting related state.

Link: https://www.synacktiv.com/posts/systems/icmp-reachable.html
Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso 
Signed-off-by: Sasha Levin

selftests: fib_tests: Fix 'Command line is not complete' errors

2019-05-16T17:41:21+00:00

[ Upstream commit a5f622984a623df9a84cf43f6b098d8dd76fbe05 ]

A couple of tests are verifying a route has been removed. The helper
expects the prefix as the first part of the expected output. When
checking that a route has been deleted the prefix is empty leading
to an invalid ip command:

  $ ip ro ls match
  Command line is not complete. Try option "help"

Fix by moving the comparison of expected output and output to a new
function that is used by both check_route and check_route6. Use the
new helper for the 2 checks on route removal.

Also, remove the reset of 'set -x' in route_setup which overrides the
user managed setting.

Fixes: d69faad76584c ("selftests: fib_tests: Add prefix route tests with metric")
Signed-off-by: David Ahern 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

selftests: fib_rule_tests: print the result and return 1 if any tests failed

2019-05-05T12:42:39+00:00

[ Upstream commit f68d7c44e76532e46f292ad941aa3706cb9e6e40 ]

Fixes: 65b2b4939a64 ("selftests: net: initial fib rule tests")
Signed-off-by: Hangbin Liu 
Reviewed-by: David Ahern 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net/sched: act_sample: fix divide by zero in the traffic path

2019-04-17T06:38:41+00:00

[ Upstream commit fae2708174ae95d98d19f194e03d6e8f688ae195 ]

the control path of 'sample' action does not validate the value of 'rate'
provided by the user, but then it uses it as divisor in the traffic path.
Validate it in tcf_sample_init(), and return -EINVAL with a proper extack
message in case that value is zero, to fix a splat with the script below:

 # tc f a dev test0 egress matchall action sample rate 0 group 1 index 2
 # tc -s a s action sample
 total acts 1

         action order 0: sample rate 1/0 group 1 pipe
          index 2 ref 1 bind 1 installed 19 sec used 19 sec
         Action statistics:
         Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
         backlog 0b 0p requeues 0
 # ping 192.0.2.1 -I test0 -c1 -q

 divide error: 0000 [#1] SMP PTI
 CPU: 1 PID: 6192 Comm: ping Not tainted 5.1.0-rc2.diag2+ #591
 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
 RIP: 0010:tcf_sample_act+0x9e/0x1e0 [act_sample]
 Code: 6a f1 85 c0 74 0d 80 3d 83 1a 00 00 00 0f 84 9c 00 00 00 4d 85 e4 0f 84 85 00 00 00 e8 9b d7 9c f1 44 8b 8b e0 00 00 00 31 d2 <41> f7 f1 85 d2 75 70 f6 85 83 00 00 00 10 48 8b 45 10 8b 88 08 01
 RSP: 0018:ffffae320190ba30 EFLAGS: 00010246
 RAX: 00000000b0677d21 RBX: ffff8af1ed9ec000 RCX: 0000000059a9fe49
 RDX: 0000000000000000 RSI: 000000000c7e33b7 RDI: ffff8af23daa0af0
 RBP: ffff8af1ee11b200 R08: 0000000074fcaf7e R09: 0000000000000000
 R10: 0000000000000050 R11: ffffffffb3088680 R12: ffff8af232307f80
 R13: 0000000000000003 R14: ffff8af1ed9ec000 R15: 0000000000000000
 FS:  00007fe9c6d2f740(0000) GS:ffff8af23da80000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00007fff6772f000 CR3: 00000000746a2004 CR4: 00000000001606e0
 Call Trace:
  tcf_action_exec+0x7c/0x1c0
  tcf_classify+0x57/0x160
  __dev_queue_xmit+0x3dc/0xd10
  ip_finish_output2+0x257/0x6d0
  ip_output+0x75/0x280
  ip_send_skb+0x15/0x40
  raw_sendmsg+0xae3/0x1410
  sock_sendmsg+0x36/0x40
  __sys_sendto+0x10e/0x140
  __x64_sys_sendto+0x24/0x30
  do_syscall_64+0x60/0x210
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
  [...]
  Kernel panic - not syncing: Fatal exception in interrupt

Add a TDC selftest to document that 'rate' is now being validated.

Reported-by: Matteo Croce 
Fixes: 5c5670fae430 ("net/sched: Introduce sample tc action")
Signed-off-by: Davide Caratti 
Acked-by: Yotam Gigi 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

selftests/bpf: skip verifier tests for unsupported program types

2019-04-05T20:33:13+00:00

[ Upstream commit 8184d44c9a577a2f1842ed6cc844bfd4a9981d8e ]

Use recently introduced bpf_probe_prog_type() to skip tests in the
test_verifier() if bpf_verify_program() fails. The skipped test is
indicated in the output.

Example:

...
679/p bpf_get_stack return R0 within range SKIP (unsupported program
type 5)
680/p ld_abs: invalid op 1 OK
...
Summary: 863 PASSED, 165 SKIPPED, 3 FAILED

Signed-off-by: Stanislav Fomichev 
Signed-off-by: Daniel Borkmann 
Signed-off-by: Sasha Levin