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sysret_ss_attrs fails to compile leading x86 test run to fail on systems
configured to build using PIE by default. Add -no-pie fix it.
Relocation might still fail if relocated above 4G. For now this change
fixes the build and runs x86 tests.
tools/testing/selftests/x86$ make
gcc -m64 -o .../tools/testing/selftests/x86/single_step_syscall_64 -O2
-g -std=gnu99 -pthread -Wall single_step_syscall.c -lrt -ldl
gcc -m64 -o .../tools/testing/selftests/x86/sysret_ss_attrs_64 -O2 -g
-std=gnu99 -pthread -Wall sysret_ss_attrs.c thunks.S -lrt -ldl
/usr/bin/ld: /tmp/ccS6pvIh.o: relocation R_X86_64_32S against `.text'
can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
Makefile:49: recipe for target
'.../tools/testing/selftests/x86/sysret_ss_attrs_64' failed
make: *** [.../tools/testing/selftests/x86/sysret_ss_attrs_64] Error 1
Suggested-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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with addition of tnum logic the verifier got smart enough and
we can enforce return codes at program load time.
For now do so for cgroup-bpf program types.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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to make sure this is serialized correctly.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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fou test lifted from ip-fou man page.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch tests newly added fields of the bpf_attr,
bpf_prog_info and bpf_map_info.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch swaps the checking order. It now checks the map_info
first and then prog_info. It is a prep work for adding
test to the newly added fields (the map_ids of prog_info field
in particular).
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch extends the libbpf to provide API support to
allow specifying BPF object name.
In tools/lib/bpf/libbpf, the C symbol of the function
and the map is used. Regarding section name, all maps are
under the same section named "maps". Hence, section name
is not a good choice for map's name. To be consistent with
map, bpf_prog also follows and uses its function symbol as
the prog's name.
This patch adds logic to collect function's symbols in libbpf.
There is existing codes to collect the map's symbols and no change
is needed.
The bpf_load_program_name() and bpf_map_create_name() are
added to take the name argument. For the other bpf_map_create_xxx()
variants, a name argument is directly added to them.
In samples/bpf, bpf_load.c in particular, the symbol is also
used as the map's name and the map symbols has already been
collected in the existing code. For bpf_prog, bpf_load.c does
not collect the function symbol name. We can consider to collect
them later if there is a need to continue supporting the bpf_load.c.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move private definitions to command emulation.
These definitions were originally defined at include/uapi/linux/ndctl.h,
but they are used at only nfit_test emulation now.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Need MST sideband message transaction to power up/down nodes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"This update consists of:
- fixes to several existing tests
- a test for regression introduced by b9470c27607b ("inet: kill
smallest_size and smallest_port")
- seccomp support for glibc 2.26 siginfo_t.h
- fixes to kselftest framework and tests to run make O=dir use-case
- fixes to silence unnecessary test output to de-clutter test results"
* tag 'linux-kselftest-4.14-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (28 commits)
selftests: timers: set-timer-lat: Fix hang when testing unsupported alarms
selftests: timers: set-timer-lat: fix hang when std out/err are redirected
selftests/memfd: correct run_tests.sh permission
selftests/seccomp: Support glibc 2.26 siginfo_t.h
selftests: futex: Makefile: fix for loops in targets to run silently
selftests: Makefile: fix for loops in targets to run silently
selftests: mqueue: Use full path to run tests from Makefile
selftests: futex: copy sub-dir test scripts for make O=dir run
selftests: lib.mk: copy test scripts and test files for make O=dir run
selftests: sync: kselftest and kselftest-clean fail for make O=dir case
selftests: sync: use TEST_CUSTOM_PROGS instead of TEST_PROGS
selftests: lib.mk: add TEST_CUSTOM_PROGS to allow custom test run/install
selftests: watchdog: fix to use TEST_GEN_PROGS and remove clean
selftests: lib.mk: fix test executable status check to use full path
selftests: Makefile: clear LDFLAGS for make O=dir use-case
selftests: lib.mk: kselftest and kselftest-clean fail for make O=dir case
Makefile: kselftest and kselftest-clean fail for make O=dir case
selftests/net: msg_zerocopy enable build with older kernel headers
selftests: actually run the various net selftests
selftest: add a reuseaddr test
...
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Add various test_verifier selftests, and a simple xdp/tc functional
test that is being attached to veths. Also let new versions of clang
use the recently added -mcpu=probe support [1] for the BPF target,
so that it can probe the underlying kernel for BPF insn set extensions.
We could also just set this options always, where older versions just
ignore it and give a note to the user that the -mcpu value is not
supported, but given emitting the note cannot be turned off from clang
side lets not confuse users running selftests with it, thus fallback
to the default generic one when we see that clang doesn't support it.
Also allow CPU option to be overridden in the Makefile from command
line.
[1] https://github.com/llvm-mirror/llvm/commit/d7276a40d87b89aed89978dec6457a5b8b3a0db5
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When timer_create() fails on a bootime or realtime clock, setup_timer()
returns 0 as if timer has been set. Callers wait forever for the timer
to expire.
This hang is seen on a system that doesn't have support for:
CLOCK_REALTIME_ALARM ABSTIME missing CAP_WAKE_ALARM? : [UNSUPPORTED]
Test hangs waiting for a timer that hasn't been set to expire. Fix
setup_timer() to return 1, add handling in callers to detect the
unsupported case and return 0 without waiting to not fail the test.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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do_timer_oneshot() uses select() as a timer with FD_SETSIZE and readfs
is cleared with FD_ZERO without FD_SET.
When stdout and stderr are redirected, the test hangs in select forever.
Fix the problem calling select() with readfds empty and nfds zero. This
is sufficient for using select() for timer.
With this fix "./set-timer-lat > /dev/null 2>&1" no longer hangs.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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to fix the following issue:
------------------
TAP version 13
selftests: run_tests.sh
========================================
selftests: Warning: file run_tests.sh is not executable, correct this.
not ok 1..1 selftests: run_tests.sh [FAIL]
------------------
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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The 2.26 release of glibc changed how siginfo_t is defined, and the earlier
work-around to using the kernel definition are no longer needed. The old
way needs to stay around for a while, though.
Reported-by: Seth Forshee <seth.forshee@canonical.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Will Drewry <wad@chromium.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: linux-kselftest@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Fix for loops in targets to run silently to avoid cluttering the test
results.
Suppresses the following from targets:
for DIR in functional; do \
BUILD_TARGET=./tools/testing/selftests/futex/$DIR; \
mkdir $BUILD_TARGET -p; \
make OUTPUT=$BUILD_TARGET -C $DIR all;\
done
./tools/testing/selftests/futex/run.sh
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Reviewed-by: Darren Hart (VMware) <dvhart@infradead.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Fix for loops in targets to run silently to avoid cluttering the test
results.
Suppresses the following from targets: e.g run from breakpoints
for TARGET in breakpoints; do \
BUILD_TARGET=$BUILD/$TARGET; \
mkdir $BUILD_TARGET -p; \
make OUTPUT=$BUILD_TARGET -C $TARGET;\
done;
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Use full path including $(OUTPUT) to run tests from Makefile for
normal case when objects reside in the source tree as well as when
objects are relocated with make O=dir. In both cases $(OUTPUT) will
be set correctly by lib.mk.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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For make O=dir run_tests to work, test scripts from sub-directories
need to be copied over to the object directory. Running tests from the
object directory is necessary to avoid making the source tree dirty.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Reviewed-by: Darren Hart (VMware) <dvhart@infradead.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp updates from Kees Cook:
"Major additions:
- sysctl and seccomp operation to discover available actions
(tyhicks)
- new per-filter configurable logging infrastructure and sysctl
(tyhicks)
- SECCOMP_RET_LOG to log allowed syscalls (tyhicks)
- SECCOMP_RET_KILL_PROCESS as the new strictest possible action
- self-tests for new behaviors"
[ This is the seccomp part of the security pull request during the merge
window that was nixed due to unrelated problems - Linus ]
* tag 'seccomp-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
samples: Unrename SECCOMP_RET_KILL
selftests/seccomp: Test thread vs process killing
seccomp: Implement SECCOMP_RET_KILL_PROCESS action
seccomp: Introduce SECCOMP_RET_KILL_PROCESS
seccomp: Rename SECCOMP_RET_KILL to SECCOMP_RET_KILL_THREAD
seccomp: Action to log before allowing
seccomp: Filter flag to log all actions except SECCOMP_RET_ALLOW
seccomp: Selftest for detection of filter flag support
seccomp: Sysctl to configure actions that are allowed to be logged
seccomp: Operation for checking if an action is available
seccomp: Sysctl to display available actions
seccomp: Provide matching filter for introspection
selftests/seccomp: Refactor RET_ERRNO tests
selftests/seccomp: Add simple seccomp overhead benchmark
selftests/seccomp: Add tests for basic ptrace actions
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BPF samples fail to build when cross-compiling for ARM64 because of incorrect
pt_regs param selection. This is because clang defines __x86_64__ and
bpf_headers thinks we're building for x86. Since clang is building for the BPF
target, it shouldn't make assumptions about what target the BPF program is
going to run on. To fix this, lets pass ARCH so the header knows which target
the BPF program is being compiled for and can use the correct pt_regs code.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Joel Fernandes <joelaf@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For make O=dir run_tests to work, test scripts, test files, and other
dependencies need to be copied over to the object directory. Running
tests from the object directory is necessary to avoid making the source
tree dirty.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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sync test fails to build when object directory is specified to relocate
object files. Fix it to specify the correct path. Fix clean target to
remove objects. Also include simplified logic to use TEST_CUSTOM_PROGS
in build and clean targets instead of hard-coding the test name each
time.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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lib.mk var TEST_CUSTOM_PROGS is for tests that need custom build
rules. TEST_PROGS is used for test shell scripts. Fix it to use
TEST_CUSTOM_PROGS. lib.mk will run and install them.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Some tests such as sync can't use generic build rules in lib.mk and require
custom rules. Currently there is no provision to allow custom builds and
test such as sync use TEST_PROGS which is reserved for test shell scripts.
Add TEST_CUSTOM_PROGS variable to lib.mk to run and install custom tests
built by individual test make files.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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TEST_PROGS should be used for test scripts that don't ned to be built.
Use TEST_GEN_PROGS instead which is intended for test executables.
Remove clean target and let the common clean take care of cleaning.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Fix test executable status check to use full path for make O=dir case,m
when tests are relocated to user specified object directory. Without the
full path, this check fails to find the file and fails the test.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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kselftest target fails when object directory is specified to relocate
objects. Inherited "LDFLAGS = -m" fails the test builds. Clear it.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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kselftest and kselftest-clean targets fail when object directory is
specified to relocate objects. Main Makefile make O= path clears the
built-in defines LINK.c, COMPILE.S, LINK.S, and RM that are used in
lib.mk to build and clean targets. Define them.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Extend the 'random' operation tests to include a delete operation
(delete half of the nodes from both lpm implementions and ensure
that lookups are still equivalent).
Also, add a simple IPv4 test which verifies lookup behavior as nodes
are deleted from the tree.
Signed-off-by: Craig Gallek <kraig@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The 'trivial' lpm implementation in this test allows equivalent nodes
to be added (that is, nodes consisting of the same prefix and prefix
length). For lookup operations, this is fine because insertion happens
at the head of the (singly linked) list and the first, best match is
returned. In order to support deletion, the tlpm data structue must
first enforce uniqueness. This change modifies the insertion algorithm
to search for equivalent nodes and remove them. Note: the
BPF_MAP_TYPE_LPM_TRIE already has a uniqueness invariant that is
implemented as node replacement.
Signed-off-by: Craig Gallek <kraig@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Explicitly define SO_EE_ORIGIN_ZEROCOPY.
This makes the test program build with older kernel headers,
e.g. from Debian 9.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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These self tests are just self contained binaries, they are not run by
any of the scripts in the directory. This means they need to be marked
with TEST_GEN_PROGS to actually be run, not TEST_GEN_FILES.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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This is to test for a regression introduced by
b9470c27607b ("inet: kill smallest_size and smallest_port")
which introduced a problem with reuseaddr and bind conflicts.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Some of the networking tests are very noisy and make it impossible to
see if we actually passed the tests as they run. Default to suppressing
the output from any tests run in order to make it easier to track what
failed.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Improve coverage of NVDIMM-N test scenarios by providing a test bus
incapable of label operations.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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The multiple_kprobes test case fails to check for KPROBE_EVENT support.
Add the check to prevent a false test result.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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The current implementation fails to work on uniprocessor systems.
Fix the parser to also handle the uniprocessor case.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Both test programs are being compiled by make, so no need to compile both
programs in the runner script.
This resolves an error when installing all selftests via make install
and run them in a different environemnt.
Running tests in intel_pstate
========================================
./run.sh: line 35: gcc: command not found
Problem compiling aperf.c.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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These tests are only for x86, so don't try to build or run
them on other architectures.
Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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breakpoint_test can fail on arm64 with older/unpatched glibc:
breakpoint_test_arm64.c: In function 'run_test':
breakpoint_test_arm64.c:170:25: error: 'TRAP_HWBKPT' undeclared (first use
in this function)
due to glibc missing several of the TRAP_* constants in the userspace
definitions. Specifically TRAP_BRANCH and TRAP_HWBKPT.
See https://sourceware.org/bugzilla/show_bug.cgi?id=21286
It prevents to build step_after_suspend_test afterward, since make won't
continue.
We still want to be able to build and run the test, independently of
breakpoint_test_arm64 build failure. Re-order TEST_GEN_PROGS to be able to
build step_after_suspend_test first.
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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On s390x the compilation of the file sas.c in directory
tools/testing/selftests/sigaltstack fails with this error message:
root@s35lp76 testing]# make selftests/sigaltstack/sas
cc selftests/sigaltstack/sas.c -o selftests/sigaltstack/sas
selftests/sigaltstack/sas.c: In function ‘my_usr1’:
selftests/sigaltstack/sas.c:42:25: error: invalid register name for ‘sp’
register unsigned long sp asm("sp");
^~
<builtin>: recipe for target 'selftests/sigaltstack/sas' failed
make: *** [selftests/sigaltstack/sas] Error 1
[root@s35lp76 testing]#
On s390x the stack pointer is register r15, the register name "sp"
is unknown.
Make this line platform dependend and use register r15.
With this patch the compilation and test succeeds:
[root@s35lp76 testing]# ./selftests/sigaltstack/sas
TAP version 13
ok 1 Initial sigaltstack state was SS_DISABLE
# [RUN] signal USR1
ok 2 sigaltstack is disabled in sighandler
# [RUN] switched to user ctx
# [RUN] signal USR2
# [OK] Stack preserved
ok 3 sigaltstack is still SS_AUTODISARM after signal
Pass 3 Fail 0 Xfail 0 Xpass 0 Skip 0 Error 0
1..3
[root@s35lp76 testing]#
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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The ip tool might be provided by another package (such as
Busybox), not necessarily implementing the -Version switch.
Trying an actual usage (`ip link show') might be a better
test that would work with all implementations of `ip'.
Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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Pull networking fixes from David Miller:
1) Fix hotplug deadlock in hv_netvsc, from Stephen Hemminger.
2) Fix double-free in rmnet driver, from Dan Carpenter.
3) INET connection socket layer can double put request sockets, fix
from Eric Dumazet.
4) Don't match collect metadata-mode tunnels if the device is down,
from Haishuang Yan.
5) Do not perform TSO6/GSO on ipv6 packets with extensions headers in
be2net driver, from Suresh Reddy.
6) Fix scaling error in gen_estimator, from Eric Dumazet.
7) Fix 64-bit statistics deadlock in systemport driver, from Florian
Fainelli.
8) Fix use-after-free in sctp_sock_dump, from Xin Long.
9) Reject invalid BPF_END instructions in verifier, from Edward Cree.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
mlxsw: spectrum_router: Only handle IPv4 and IPv6 events
Documentation: link in networking docs
tcp: fix data delivery rate
bpf/verifier: reject BPF_ALU64|BPF_END
sctp: do not mark sk dumped when inet_sctp_diag_fill returns err
sctp: fix an use-after-free issue in sctp_sock_dump
netvsc: increase default receive buffer size
tcp: update skb->skb_mstamp more carefully
net: ipv4: fix l3slave check for index returned in IP_PKTINFO
net: smsc911x: Quieten netif during suspend
net: systemport: Fix 64-bit stats deadlock
net: vrf: avoid gcc-4.6 warning
qed: remove unnecessary call to memset
tg3: clean up redundant initialization of tnapi
tls: make tls_sw_free_resources static
sctp: potential read out of bounds in sctp_ulpevent_type_enabled()
MAINTAINERS: review Renesas DT bindings as well
net_sched: gen_estimator: fix scaling error in bytes/packets samples
nfp: wait for the NSP resource to appear on boot
nfp: wait for board state before talking to the NSP
...
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Neither ___bpf_prog_run nor the JITs accept it.
Also adds a new test case.
Fixes: 17a5267067f3 ("bpf: verifier (add verifier core)")
Signed-off-by: Edward Cree <ecree@solarflare.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull namespace updates from Eric Biederman:
"Life has been busy and I have not gotten half as much done this round
as I would have liked. I delayed it so that a minor conflict
resolution with the mips tree could spend a little time in linux-next
before I sent this pull request.
This includes two long delayed user namespace changes from Kirill
Tkhai. It also includes a very useful change from Serge Hallyn that
allows the security capability attribute to be used inside of user
namespaces. The practical effect of this is people can now untar
tarballs and install rpms in user namespaces. It had been suggested to
generalize this and encode some of the namespace information
information in the xattr name. Upon close inspection that makes the
things that should be hard easy and the things that should be easy
more expensive.
Then there is my bugfix/cleanup for signal injection that removes the
magic encoding of the siginfo union member from the kernel internal
si_code. The mips folks reported the case where I had used FPE_FIXME
me is impossible so I have remove FPE_FIXME from mips, while at the
same time including a return statement in that case to keep gcc from
complaining about unitialized variables.
I almost finished the work to get make copy_siginfo_to_user a trivial
copy to user. The code is available at:
git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace.git neuter-copy_siginfo_to_user-v3
But I did not have time/energy to get the code posted and reviewed
before the merge window opened.
I was able to see that the security excuse for just copying fields
that we know are initialized doesn't work in practice there are buggy
initializations that don't initialize the proper fields in siginfo. So
we still sometimes copy unitialized data to userspace"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
Introduce v3 namespaced file capabilities
mips/signal: In force_fcr31_sig return in the impossible case
signal: Remove kernel interal si_code magic
fcntl: Don't use ambiguous SIG_POLL si_codes
prctl: Allow local CAP_SYS_ADMIN changing exe_file
security: Use user_namespace::level to avoid redundant iterations in cap_capable()
userns,pidns: Verify the userns for new pid namespaces
signal/testing: Don't look for __SI_FAULT in userspace
signal/mips: Document a conflict with SI_USER with SIGFPE
signal/sparc: Document a conflict with SI_USER with SIGFPE
signal/ia64: Document a conflict with SI_USER with SIGFPE
signal/alpha: Document a conflict with SI_USER for SIGTRAP
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm from Dan Williams:
"A rework of media error handling in the BTT driver and other updates.
It has appeared in a few -next releases and collected some late-
breaking build-error and warning fixups as a result.
Summary:
- Media error handling support in the Block Translation Table (BTT)
driver is reworked to address sleeping-while-atomic locking and
memory-allocation-context conflicts.
- The dax_device lookup overhead for xfs and ext4 is moved out of the
iomap hot-path to a mount-time lookup.
- A new 'ecc_unit_size' sysfs attribute is added to advertise the
read-modify-write boundary property of a persistent memory range.
- Preparatory fix-ups for arm and powerpc pmem support are included
along with other miscellaneous fixes"
* tag 'libnvdimm-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (26 commits)
libnvdimm, btt: fix format string warnings
libnvdimm, btt: clean up warning and error messages
ext4: fix null pointer dereference on sbi
libnvdimm, nfit: move the check on nd_reserved2 to the endpoint
dax: fix FS_DAX=n BLOCK=y compilation
libnvdimm: fix integer overflow static analysis warning
libnvdimm, nd_blk: remove mmio_flush_range()
libnvdimm, btt: rework error clearing
libnvdimm: fix potential deadlock while clearing errors
libnvdimm, btt: cache sector_size in arena_info
libnvdimm, btt: ensure that flags were also unchanged during a map_read
libnvdimm, btt: refactor map entry operations with macros
libnvdimm, btt: fix a missed NVDIMM_IO_ATOMIC case in the write path
libnvdimm, nfit: export an 'ecc_unit_size' sysfs attribute
ext4: perform dax_device lookup at mount
ext2: perform dax_device lookup at mount
xfs: perform dax_device lookup at mount
dax: introduce a fs_dax_get_by_bdev() helper
libnvdimm, btt: check memory allocation failure
libnvdimm, label: fix index block size calculation
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