linux-stable.git/tools, branch v5.7.8

selftests: tpm: Use /bin/sh instead of /bin/bash

2020-07-09T07:39:31+00:00

commit 377ff83083c953dd58c5a030b3c9b5b85d8cc727 upstream.

It's better to use /bin/sh instead of /bin/bash in order to run the tests
in the BusyBox shell.

Fixes: 6ea3dfe1e073 ("selftests: add TPM 2.0 tests")
Cc: stable@vger.kernel.org
Cc: linux-integrity@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Signed-off-by: Jarkko Sakkinen 
Signed-off-by: Shuah Khan 
Signed-off-by: Greg Kroah-Hartman

Revert "tpm: selftest: cleanup after unseal with wrong auth/policy test"

2020-07-09T07:39:31+00:00

commit 5be206eaac9a68992fc3b06fb5dd5634e323de86 upstream.

The reverted commit illegitly uses tpm2-tools. External dependencies are
absolutely forbidden from these tests. There is also the problem that
clearing is not necessarily wanted behavior if the test/target computer is
not used only solely for testing.

Fixes: a9920d3bad40 ("tpm: selftest: cleanup after unseal with wrong auth/policy test")
Cc: Tadeusz Struk 
Cc: stable@vger.kernel.org
Cc: linux-integrity@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Signed-off-by: Jarkko Sakkinen 
Signed-off-by: Shuah Khan 
Signed-off-by: Greg Kroah-Hartman

tools lib traceevent: Handle attribute((user)) in field names

2020-07-09T07:39:29+00:00

[ Upstream commit 74621d929d944529a5e2878a84f48bfa6fb69a66 ]

Commit c61f13eaa1ee1 ("gcc-plugins: Add structleak for more stack
initialization") added "__attribute__((user))" to the user when
stackleak detector is enabled. This now appears in the field format of
system call trace events for system calls that have user buffers. The
"__attribute__((user))" breaks the parsing in libtraceevent. That needs
to be handled.

Signed-off-by: Steven Rostedt (VMware) 
Cc: Andrew Morton 
Cc: Jaewon Kim 
Cc: Jiri Olsa 
Cc: Kees Kook 
Cc: Namhyung Kim 
Cc: Vlastimil Babka 
Cc: linux-mm@kvack.org
Cc: linux-trace-devel@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200324200956.663647256@goodmis.org
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Sasha Levin

tools lib traceevent: Add append() function helper for appending strings

2020-07-09T07:39:29+00:00

[ Upstream commit 27d4d336f2872193e90ee5450559e1699fae0f6d ]

There's several locations that open code realloc and strcat() to append
text to strings. Add an append() function that takes a delimiter and a
string to append to another string.

Signed-off-by: Steven Rostedt (VMware) 
Cc: Andrew Morton 
Cc: Jaewon Lim 
Cc: Jiri Olsa 
Cc: Kees Kook 
Cc: linux-mm@kvack.org
Cc: linux-trace-devel@vger.kernel.org
Cc: Namhyung Kim 
Cc: Vlastimil Babka 
Link: http://lore.kernel.org/lkml/20200324200956.515118403@goodmis.org
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Sasha Levin

selftests/powerpc: Fix build failure in ebb tests

2020-06-30T19:36:12+00:00

[ Upstream commit 896066aa0685af3434637998b76218c2045142a8 ]

We use OUTPUT directory as TMPOUT for checking no-pie option.

Since commit f2f02ebd8f38 ("kbuild: improve cc-option to clean up all
temporary files") when building powerpc/ from selftests directory, the
OUTPUT directory points to powerpc/pmu/ebb/ and gets removed when
checking for -no-pie option in try-run routine, subsequently build
fails with the following:

  $ make -C powerpc
  ...
  TARGET=ebb; BUILD_TARGET=$OUTPUT/$TARGET; mkdir -p $BUILD_TARGET; make OUTPUT=$BUILD_TARGET -k -C $TARGET all
  make[2]: Entering directory '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb'
  make[2]: *** No rule to make target 'Makefile'.
  make[2]: Failed to remake makefile 'Makefile'.
  make[2]: *** No rule to make target 'ebb.c', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'.
  make[2]: *** No rule to make target 'ebb_handler.S', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'.
  make[2]: *** No rule to make target 'trace.c', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'.
  make[2]: *** No rule to make target 'busy_loop.S', needed by '/home/linux-master/tools/testing/selftests/powerpc/pmu/ebb/reg_access_test'.
  make[2]: Target 'all' not remade because of errors.

Fix this by adding a suffix to the OUTPUT directory so that the
failure is avoided.

Fixes: 9686813f6e9d ("selftests/powerpc: Fix try-run when source tree is not writable")
Signed-off-by: Harish 
[mpe: Mention that commit that triggered the breakage]
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20200625165721.264904-1-harish@linux.ibm.com
Signed-off-by: Sasha Levin

selftests/net: report etf errors correctly

2020-06-30T19:36:06+00:00

[ Upstream commit ca8826095e4d4afc0ccaead27bba6e4b623a12ae ]

The ETF qdisc can queue skbs that it could not pace on the errqueue.

Address a few issues in the selftest

- recv buffer size was too small, and incorrectly calculated
- compared errno to ee_code instead of ee_errno
- missed invalid request error type

v2:
  - fix a few checkpatch --strict indentation warnings

Fixes: ea6a547669b3 ("selftests/net: make so_txtime more robust to timer variance")
Signed-off-by: Willem de Bruijn 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

wireguard: device: avoid circular netns references

2020-06-30T19:35:52+00:00

[ Upstream commit 900575aa33a3eaaef802b31de187a85c4a4b4bd0 ]

Before, we took a reference to the creating netns if the new netns was
different. This caused issues with circular references, with two
wireguard interfaces swapping namespaces. The solution is to rather not
take any extra references at all, but instead simply invalidate the
creating netns pointer when that netns is deleted.

In order to prevent this from happening again, this commit improves the
rough object leak tracking by allowing it to account for created and
destroyed interfaces, aside from just peers and keys. That then makes it
possible to check for the object leak when having two interfaces take a
reference to each others' namespaces.

Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Signed-off-by: Jason A. Donenfeld 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

bpf: tcp: bpf_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT

2020-06-30T19:35:51+00:00

[ Upstream commit 7d21d54d624777358ab6c7be7ff778808fef70ba ]

Apply the fix from:
 "tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT"
to the BPF implementation of TCP CUBIC congestion control.

Repeating the commit description here for completeness:

Mirja Kuehlewind reported a bug in Linux TCP CUBIC Hystart, where
Hystart HYSTART_DELAY mechanism can exit Slow Start spuriously on an
ACK when the minimum rtt of a connection goes down. From inspection it
is clear from the existing code that this could happen in an example
like the following:

o The first 8 RTT samples in a round trip are 150ms, resulting in a
  curr_rtt of 150ms and a delay_min of 150ms.

o The 9th RTT sample is 100ms. The curr_rtt does not change after the
  first 8 samples, so curr_rtt remains 150ms. But delay_min can be
  lowered at any time, so delay_min falls to 100ms. The code executes
  the HYSTART_DELAY comparison between curr_rtt of 150ms and delay_min
  of 100ms, and the curr_rtt is declared far enough above delay_min to
  force a (spurious) exit of Slow start.

The fix here is simple: allow every RTT sample in a round trip to
lower the curr_rtt.

Fixes: 6de4a9c430b5 ("bpf: tcp: Add bpf_cubic example")
Reported-by: Mirja Kuehlewind 
Signed-off-by: Neal Cardwell 
Signed-off-by: Eric Dumazet 
Acked-by: Soheil Hassas Yeganeh 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

tools/bootconfig: Fix to return 0 if succeeded to show the bootconfig

2020-06-24T15:49:24+00:00

commit f91cb5b7476a603068eae31e5b2cc170dd2b9b1b upstream.

Fix bootconfig to return 0 if succeeded to show the bootconfig
in initrd. Without this fix, "bootconfig INITRD" command
returns !0 even if the command succeeded to show the bootconfig.

Link: http://lkml.kernel.org/r/159230246566.65555.11891772258543514487.stgit@devnote2

Cc: stable@vger.kernel.org
Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command")
Signed-off-by: Masami Hiramatsu 
Signed-off-by: Steven Rostedt (VMware) 
Signed-off-by: Greg Kroah-Hartman

tools/bootconfig: Fix to use correct quotes for value