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5 years agoi18n update-po bump
Frank Ch. Eigler [Fri, 12 Oct 2018 20:30:26 +0000 (16:30 -0400)]
i18n update-po bump

5 years agoAUTHORS bump
Frank Ch. Eigler [Fri, 12 Oct 2018 20:27:29 +0000 (16:27 -0400)]
AUTHORS bump

5 years agoFix error in sysc_msgsnd.stp regarding compat_sys_msgsnd
William Cohen [Fri, 12 Oct 2018 19:29:49 +0000 (15:29 -0400)]
Fix error in sysc_msgsnd.stp regarding compat_sys_msgsnd

5 years agoFix typos in ppc compat_fadvise64 and compat_fallocate
Jafeer Uddin [Fri, 12 Oct 2018 19:22:28 +0000 (15:22 -0400)]
Fix typos in ppc compat_fadvise64 and compat_fallocate

5 years agoAdd fallback __NR_fork define
William Cohen [Fri, 12 Oct 2018 19:02:03 +0000 (15:02 -0400)]
Add fallback __NR_fork define

The aarch64 architecture doesn't have a fork syscall, so the code
needs to have a fallback __NR_fork define for the code to be
successfully compiled on aarch64.

5 years agoFix error in sysc_msgrcv.stp regarding compat_sys_msgrcv
Jafeer Uddin [Fri, 12 Oct 2018 18:57:18 +0000 (14:57 -0400)]
Fix error in sysc_msgrcv.stp regarding compat_sys_msgrcv

5 years agoRHBZ1638874 workaround: let $SYSTEMTAP_SIGN override missing secureboot hint
Frank Ch. Eigler [Fri, 12 Oct 2018 18:33:04 +0000 (14:33 -0400)]
RHBZ1638874 workaround: let $SYSTEMTAP_SIGN override missing secureboot hint

On some Fedora kernels, EFI SecureBoot involves activating a lockdown
mode that prevents unsigned .ko's from loading.  It doesn't appear to
give any userlevel sign that this is happening, so stap couldn't
activate its secureboot / stap-server machinery.

Until the kernel does inform us properly, we let users set an
environment variable to force UEFI MOK module signing.

5 years agotestsuite :: another do_ fix in buildok/
Serhei Makarov [Fri, 12 Oct 2018 17:08:53 +0000 (13:08 -0400)]
testsuite :: another do_ fix in buildok/

5 years agodeprecate STP_USE_RING_BUFFER
Serhei Makarov [Fri, 12 Oct 2018 16:07:16 +0000 (12:07 -0400)]
deprecate STP_USE_RING_BUFFER

5 years agoPR23766: testsuite: make syscalls tests too-short-module warning proof
Frank Ch. Eigler [Fri, 12 Oct 2018 15:57:46 +0000 (11:57 -0400)]
PR23766: testsuite: make syscalls tests too-short-module warning proof

Just use longlonglong -m MODULE names.

5 years agoPR23766: tolerate staprun -R attempts on very short module names
Frank Ch. Eigler [Fri, 12 Oct 2018 15:52:20 +0000 (11:52 -0400)]
PR23766: tolerate staprun -R attempts on very short module names

We warn instead of error out.  This could mean loading conflicts
later, but that's less bad than a definite error.

5 years agoFix typo in compat_unistd.h
Jafeer Uddin [Fri, 12 Oct 2018 13:56:51 +0000 (09:56 -0400)]
Fix typo in compat_unistd.h

5 years agotestsuite :: couple more do_ tweaks
Serhei Makarov [Fri, 12 Oct 2018 00:22:53 +0000 (20:22 -0400)]
testsuite :: couple more do_ tweaks

5 years agotestsuite :: some lingering sys_open -> do_sys_open changes
Serhei Makarov [Thu, 11 Oct 2018 21:51:38 +0000 (17:51 -0400)]
testsuite :: some lingering sys_open -> do_sys_open changes

5 years agoAdjust eatkmydata.stp to work with the newer Linux kernels and tapsets
William Cohen [Thu, 11 Oct 2018 18:05:46 +0000 (14:05 -0400)]
Adjust eatkmydata.stp to work with the newer Linux kernels and tapsets

The revised tapsets generally do not use the dwarf-based kprobes and
kretprobes for syscalls on newer 4.17 Linux kernels.  As a result
target variables are not available and guru mode will not work with
them.  The eatmydata.stp example has been modified to instrument the
common do_fsync function that both syscall.fsync and syscall.fdatasync
call.  The target variable and guru mode will work on this function.

5 years agoAdjust iotime.stp to work with newer Linux kernels and sysetmtap tapset
William Cohen [Thu, 11 Oct 2018 17:41:20 +0000 (13:41 -0400)]
Adjust iotime.stp to work with newer Linux kernels and sysetmtap tapset

Newer systems may use the openat syscall instead of the open syscall,
so need to monitor openat syscall.  The probe points used by systemtap
for the syscalls do not have the target variable available via
@entry(), so need to code up iotime.stp to explicitly store values
available on syscall entry in associative arrays to have them
available for the syscall return probes.

5 years agoPR23760: allow wildcarded .statement() expansion for debug-line-less srcfiles
Frank Ch. Eigler [Thu, 11 Oct 2018 16:15:43 +0000 (12:15 -0400)]
PR23760: allow wildcarded .statement() expansion for debug-line-less srcfiles

We were overzealous with error detection for this best-effort case.

5 years agoNEWS: reword / collect the syscall tapset changes
Frank Ch. Eigler [Thu, 11 Oct 2018 00:07:05 +0000 (20:07 -0400)]
NEWS: reword / collect the syscall tapset changes

5 years agoNEWS: mention kernel 4.17+ syscall fix
Jafeer Uddin [Wed, 10 Oct 2018 19:17:37 +0000 (15:17 -0400)]
NEWS: mention kernel 4.17+ syscall fix

5 years agoAvoid using target variable and @entry() in syscall.*.return for futex examples
William Cohen [Wed, 10 Oct 2018 18:08:19 +0000 (14:08 -0400)]
Avoid using target variable and @entry() in syscall.*.return for futex examples

The update to the syscall tapsets causes SystemTap to use non-dwarf
based probe points for syscalls on linux-4.17 and newer.  The
non-dwarf based syscall instrumentation does not have the target
variables available, so the @entry() operation is not going to work.
The futex examples are revised to store the needed data into
associative arrays at syscall entry and accessed that data in the
syscall return.

5 years agoNEWS :: fxi tyops
Serhei Makarov [Wed, 10 Oct 2018 17:27:12 +0000 (13:27 -0400)]
NEWS :: fxi tyops

5 years agostapbpf.8 :: update based on recent development work
Serhei Makarov [Wed, 10 Oct 2018 17:26:39 +0000 (13:26 -0400)]
stapbpf.8 :: update based on recent development work

5 years agoPR23160,PR14690: adapt last few syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit
Jafeer Uddin [Tue, 9 Oct 2018 19:03:02 +0000 (15:03 -0400)]
PR23160,PR14690: adapt last few syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit

5 years agoAdd syscall_any.stp to buildok tests to test this new tapset.
William Cohen [Mon, 8 Oct 2018 15:09:39 +0000 (11:09 -0400)]
Add syscall_any.stp to buildok tests to test this new tapset.

5 years agoAdd really simple glib2 example.
William Cohen [Mon, 8 Oct 2018 14:05:38 +0000 (10:05 -0400)]
Add really simple glib2 example.

5 years agoAdd a simple php-trace.stp to show the tracepoints.
William Cohen [Fri, 5 Oct 2018 15:29:53 +0000 (11:29 -0400)]
Add a simple php-trace.stp to show the tracepoints.

5 years agosamples: add cve-2018-14634 security band-aid
Frank Ch. Eigler [Fri, 5 Oct 2018 15:09:42 +0000 (11:09 -0400)]
samples: add cve-2018-14634 security band-aid

5 years agoAdd stap_time.stp example.
William Cohen [Thu, 4 Oct 2018 15:38:49 +0000 (11:38 -0400)]
Add stap_time.stp example.

5 years agorhbz1629623: adapt to CONFIG_HAVE_ARCH_PREL32_RELOCATIONS tracepoint enumeration
Frank Ch. Eigler [Thu, 4 Oct 2018 02:03:28 +0000 (22:03 -0400)]
rhbz1629623: adapt to CONFIG_HAVE_ARCH_PREL32_RELOCATIONS tracepoint enumeration

Kernel commit 46e0c9be206fa7b (4.19-rc1) makes the mod->tracepoints_ptrs[]
contain pointer-relative-offsets instead of normal pointers.
We must follow suit to avoid a crash.

5 years agoPR23160,PR14690: adapt 31 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit
Jafeer Uddin [Wed, 3 Oct 2018 15:37:04 +0000 (11:37 -0400)]
PR23160,PR14690: adapt 31 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit

5 years agoFix typos in exists.stp
Masanari Iida [Tue, 2 Oct 2018 04:07:58 +0000 (13:07 +0900)]
Fix typos in exists.stp

This patch fixes some spellint typo found in
/testsuite/systemtap.maps/exists.stp

5 years agoAdd a comment in thread-times.stp to clarify the reason for *10000 in the code.
William Cohen [Tue, 2 Oct 2018 15:44:50 +0000 (11:44 -0400)]
Add a comment in thread-times.stp to clarify the reason for *10000 in the code.

5 years agoAdd some Tcl examples.
William Cohen [Mon, 1 Oct 2018 15:45:22 +0000 (11:45 -0400)]
Add some Tcl examples.

5 years agoCorrect to use @hist_log in description.
William Cohen [Mon, 1 Oct 2018 15:16:41 +0000 (11:16 -0400)]
Correct to use @hist_log in description.

5 years agoFix a typo in api.cxx
Masanari Iida [Wed, 19 Sep 2018 04:03:51 +0000 (13:03 +0900)]
Fix a typo in api.cxx

This patch fix a spelling typo in error message.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
5 years agoChange the tapset file name to get matching tapset::syscall_any manpage
William Cohen [Thu, 27 Sep 2018 14:48:14 +0000 (10:48 -0400)]
Change the tapset file name to get matching tapset::syscall_any manpage

The automated generation of man pages uses the file name to generate
the manpage names.  Adjusted the name to get a matching tapset man
page for syscall_any{.return} probe points.

5 years agoConvert the various systemtap examples to use the syscall any tapset
William Cohen [Fri, 21 Sep 2018 02:50:16 +0000 (22:50 -0400)]
Convert the various systemtap examples to use the syscall any tapset

To make the examples cleaner use the new syscall any tapset.  This avoids
exposing the systemtap internal function _stp_syscall_nr() and makes the
instrumentation look a bit more like the traditional syscall.* probe points.

5 years agoAdd the syscall_any and syscall_any.return probe points
William Cohen [Fri, 21 Sep 2018 00:33:17 +0000 (20:33 -0400)]
Add the syscall_any and syscall_any.return probe points

The syscall.*{.return} and np_syscall.*.{.return} end up expanding to
large amount of code that takes a signficant amount of time to
compile.  The resulting kernel module also takes a fair amount of time
to install and remove the instrumentation when it starts and shuts
down.  For instrumentation don't really care about the details of the
syscall arguments it would be preferable to use the sys_enter and sys_exit
tracepoints to more efficiently probe the one or two places.

Using tp_syscall.*{.return} end up generating a lot of code to
determine which of the hundreds of syscall is being used and then runs
the same handler.  The syscall_any and syscall_any.return eliminate
that undesired overhead by just looking up the syscall name in a
table.

5 years agoAdjust comment in tapset/errno.stp so the documentation can be built.
William Cohen [Thu, 20 Sep 2018 18:50:39 +0000 (14:50 -0400)]
Adjust comment in tapset/errno.stp so the documentation can be built.

5 years agoUse sys_enter and sys_exit tracepoints in place of syscall.*{.return}
William Cohen [Mon, 17 Sep 2018 20:58:09 +0000 (16:58 -0400)]
Use sys_enter and sys_exit tracepoints in place of syscall.*{.return}

The common probe point idiom of syscall.* and syscall.*.return can be
replaced with equivalent sys_enter and sys_exit tracepoints for a
number of the example scripts.  The advantages are:

-Quicker compilation of the script into instrumenation
-Smaller kernels modules for the instrumentation
-Lower overhead for probe points

This changes are not applicable to all uses use syscall.* and
syscall.*.return. The predefined variable such as argstr are not
available for the sys_enter and sys_exit trace points.

Some of the revised examples are using the internal _stp_syscall_nr())
function.  A user visible version of this function should be
available.

5 years agoFix typo on s390 nd_syscall.compat_fallocate probe point.
William Cohen [Fri, 21 Sep 2018 19:44:24 +0000 (15:44 -0400)]
Fix typo on s390 nd_syscall.compat_fallocate probe point.

5 years agoUse existing "limits" keyword for cpu_throttle.stp example.
William Cohen [Fri, 21 Sep 2018 18:38:16 +0000 (14:38 -0400)]
Use existing "limits" keyword for cpu_throttle.stp example.

5 years agoAdd ioctl_handler.stp example
William Cohen [Fri, 21 Sep 2018 18:36:16 +0000 (14:36 -0400)]
Add ioctl_handler.stp example

5 years agoPR23160,PR14690: adapt 32 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit
Jafeer Uddin [Thu, 20 Sep 2018 20:56:35 +0000 (16:56 -0400)]
PR23160,PR14690: adapt 32 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit

5 years agoNote the need for debuginfo for threadstacks.stp.
William Cohen [Mon, 17 Sep 2018 18:54:46 +0000 (14:54 -0400)]
Note the need for debuginfo for threadstacks.stp.

5 years agoPR23160,PR14690: adapt 27 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit
Jafeer Uddin [Mon, 17 Sep 2018 14:27:25 +0000 (10:27 -0400)]
PR23160,PR14690: adapt 27 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit

5 years agoFix a regression that reading 64-bit registers on x86_64 was broken
Yichun Zhang (agentzh) [Mon, 17 Sep 2018 07:34:52 +0000 (00:34 -0700)]
Fix a regression that reading 64-bit registers on x86_64 was broken

This bug first appeared in commit 345537c32.

5 years agoFix the register() and u_register() tapset functions for x86
Yichun Zhang (agentzh) [Sun, 16 Sep 2018 06:42:16 +0000 (23:42 -0700)]
Fix the register() and u_register() tapset functions for x86

The register() and u_register() functions incorrectly read 16-bit
x86 registers as 32-bit on both i386 and x86_64.

Fixed the sign-extension of register values on i386.

Fixed a compilation error when using *register() in the dyninst
runtime mode on x86_64.

Also added support for 8-bit x86 reigsters like "al" and "bh" on both
i386 and x86_64.

5 years agoPR23599 Bugfix: the embeddedcode info pass incorrectly skipped unused functions
Yichun Zhang (agentzh) [Sun, 16 Sep 2018 01:08:58 +0000 (18:08 -0700)]
PR23599 Bugfix: the embeddedcode info pass incorrectly skipped unused functions

This bug led to kernel module compilation errors when using tapset
functions like usym* in unoptimized stap translation mode (i.e., stap
-u).

5 years agoPR23666 Fix a bug in semantic analysis of aggregate operators in foreach sorting
Yichun Zhang (agentzh) [Sun, 16 Sep 2018 00:06:59 +0000 (17:06 -0700)]
PR23666 Fix a bug in semantic analysis of aggregate operators in foreach sorting

When aggregate operators like @count, @sum, and etc were used in the
foreach loop sorting criteria but not in the foreach loop body, then
these sorting criteria were not respected by the translator in the
generated code.

This bug affected both the kernel and dyninst runtime modes.

5 years agoditto
Frank Ch. Eigler [Fri, 14 Sep 2018 23:38:51 +0000 (19:38 -0400)]
ditto

5 years agodummy commit for ci trigger
Frank Ch. Eigler [Fri, 14 Sep 2018 21:59:47 +0000 (17:59 -0400)]
dummy commit for ci trigger

5 years agospin-rawhide: accelerate git checkout
Frank Ch. Eigler [Fri, 14 Sep 2018 19:28:55 +0000 (15:28 -0400)]
spin-rawhide: accelerate git checkout

Use this script's directory as a git clone --reference

5 years agoDo some testing of the sizeof_interactive.stp script.
William Cohen [Fri, 14 Sep 2018 19:19:56 +0000 (15:19 -0400)]
Do some testing of the sizeof_interactive.stp script.

5 years agoIgnore the error value returned by the find command for the slowvfs.stp
William Cohen [Fri, 14 Sep 2018 18:13:08 +0000 (14:13 -0400)]
Ignore the error value returned by the find command for the slowvfs.stp

Some files in /proc are unreadable by normal users. When the find
command encounters these files find returns a non-zero value on exit.
The test is just using the find to create some load and really wants
to discard the error result otherwise the install test for slowvfs.stp
will fail.

5 years agoAdd the libguestfs example.
William Cohen [Thu, 13 Sep 2018 18:01:44 +0000 (14:01 -0400)]
Add the libguestfs example.

5 years agoPR23608 refine_*: replace assertion failure with regex_error
Serhei Makarov [Wed, 12 Sep 2018 20:22:46 +0000 (16:22 -0400)]
PR23608 refine_*: replace assertion failure with regex_error

5 years agotestsuite configury: typo fix for make check, transcribe dejagnu summary exactly
Frank Ch. Eigler [Wed, 12 Sep 2018 15:58:35 +0000 (11:58 -0400)]
testsuite configury: typo fix for make check, transcribe dejagnu summary exactly

Fix $-vs-$$ quoting typo in Makefile.

5 years agosyscalls: adapt sample scripts: syscall.*.return returnval() -> retval
Frank Ch. Eigler [Wed, 12 Sep 2018 17:51:28 +0000 (13:51 -0400)]
syscalls: adapt sample scripts: syscall.*.return returnval() -> retval

Demonstrate post-4.0 style in our distributed samples.

5 years agoPR23160,PR14690: convert syscall.*.return aliases to @SYSC_SETRETVAL retval/retstr
Frank Ch. Eigler [Wed, 12 Sep 2018 17:30:44 +0000 (13:30 -0400)]
PR23160,PR14690: convert syscall.*.return aliases to @SYSC_SETRETVAL retval/retstr

Adjust all syscall.*.return aliases to a new macro for provision of new
retval, old retstr, and the temporary returnval() compatibility hack.
All hail /bin/sed, mother of /bin/ed, which made this operation bearable.

5 years agoPR23160,PR14690: prep returnval() for an extra side-channel of data
Frank Ch. Eigler [Wed, 12 Sep 2018 17:07:53 +0000 (13:07 -0400)]
PR23160,PR14690: prep returnval() for an extra side-channel of data

To permit tracepoint-based syscall probe-aliases to provide return values
to scripts, returnval() needs an extension.  This patch adds a pair of
new values to the context, conditional on version <= 4.0.  (The retval
value will be the next better approach, coming in a followup patch.)

https://sourceware.org/ml/systemtap/2018-q3/msg00167.html

5 years agotestsuite configury: for make check, transcribe dejagnu summary exactly
Frank Ch. Eigler [Wed, 12 Sep 2018 15:58:35 +0000 (11:58 -0400)]
testsuite configury: for make check, transcribe dejagnu summary exactly

Use a bit of sed magic to tail systemtap.sum more precisely.

5 years agotestsuite: prepare for working tp_syscall.exp suite
Frank Ch. Eigler [Wed, 12 Sep 2018 14:45:54 +0000 (10:45 -0400)]
testsuite: prepare for working tp_syscall.exp suite

There were some typos in the driver .stp script that precluded
operation, and exposed a latent bug in how another .exp file
transcribed outputs into the log file.

5 years agoRevert "PR23160,PR14690: fix syscalls that broke after adding CONTEXT->sregs in tapse...
Jafeer Uddin [Mon, 10 Sep 2018 16:12:41 +0000 (12:12 -0400)]
Revert "PR23160,PR14690: fix syscalls that broke after adding CONTEXT->sregs in tapset/errno.stp"

Since commit 8038562cafe852681eda1a45c02b5f76070d3dec was reverted
there is no need for commit 297f14e99e82001e656ee5ed47f99dac8918fa95
anymore.

5 years agoRevert "tapset/errno.stp: learn about CONTEXT->sregs"
Frank Ch. Eigler [Mon, 10 Sep 2018 15:43:27 +0000 (11:43 -0400)]
Revert "tapset/errno.stp: learn about CONTEXT->sregs"

This reverts commit 8038562cafe852681eda1a45c02b5f76070d3dec.
jafeer and wcohen right note that this papered over the real
problem, which is that a function like returnval() has no way
of accessing tracepoint parameters like sys_exit's $ret,
even if given CONTEXT->sregs.  Need to rethink.

5 years agoUse @entry() in return probes to avoid warnings
William Cohen [Mon, 10 Sep 2018 14:39:17 +0000 (10:39 -0400)]
Use @entry() in return probes to avoid warnings

Some of the examples accessed target variable in function return probes.
This type of access is ambigious and triggers a warning.  The accesses
now use @entry($target_var) to be clearer and avoid the warnings.

5 years ago PR23160,PR14690: adapt 29 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit
Jafeer Uddin [Mon, 10 Sep 2018 14:40:29 +0000 (10:40 -0400)]
 PR23160,PR14690: adapt 29 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit

5 years agoCorrect measureinterval.meta test_installcheck command.
William Cohen [Mon, 10 Sep 2018 02:20:43 +0000 (22:20 -0400)]
Correct measureinterval.meta test_installcheck command.

5 years agotracepoints: support cachefiles/fscache tracepoints
Frank Ch. Eigler [Mon, 10 Sep 2018 00:52:29 +0000 (20:52 -0400)]
tracepoints: support cachefiles/fscache tracepoints

These were blocked by the typical problem of the tracepoint headers
neglecting to include the other headers that declare the types that tp
arguments use.  Also noted, missing mei: tracepoints found to be not
so easy, so left it in just a comment.

5 years agoRun postgres and mysql apps tests with both uprobes and dyninst.
Stan Cox [Sun, 9 Sep 2018 15:52:54 +0000 (11:52 -0400)]
Run postgres and mysql apps tests with both uprobes and dyninst.

* postgres.exp (stap-postgres.sh):  Also run with --dyninst
* mysql.exp (stap-mysql.sh):  Also run with --dyninst

5 years agoAdd the measureinterval.stp example
William Cohen [Fri, 7 Sep 2018 19:49:30 +0000 (15:49 -0400)]
Add the measureinterval.stp example

5 years agoAdd a python script to clean up container images more than 2 days old.
David Smith [Fri, 7 Sep 2018 18:58:51 +0000 (13:58 -0500)]
Add a python script to clean up container images more than 2 days old.

* httpd/docker/stap_image_cleanup.py: New file.

5 years agoImprove handling by the http server for target exe files.
David Smith [Fri, 7 Sep 2018 18:46:59 +0000 (13:46 -0500)]
Improve handling by the http server for target exe files.

* httpd/api.cxx (build_info::module_build): Use a full path with the '-r
  KERNEL_DIR' stap option. If the client transferred over target
  executable files, add a sysroot option that points to them.
* testsuite/systemtap.http_server/http_server.exp: Add a test that tests
  non-rpm executables with an absolute path.

5 years agoPR23608: rebalance arc_priorities to avoid overflow.
Serhei Makarov [Fri, 7 Sep 2018 17:36:49 +0000 (13:36 -0400)]
PR23608: rebalance arc_priorities to avoid overflow.

Within a state kernel, e.g. {0/256, 1/256} could be changed to {0/2, 1/2}
without trouble.

Otherwise, long chains like "aaaaaaaaaaaaa" can overflow the
arc_priority numerator after about 60 characters.

Steps for rebalancing procedure:
- sort the worklist by arc_priority
- create an equivalent balanced set of priorities starting by 0/0
- replace the worklist's arc_priorities in sorted order

* stapregex-dfa.h (MAKE_START_PRIORITY): new macro for priority 0/0.
* stapregex-dfa.cxx (add_kernel): use MAKE_START_PRIORITY.
(sort_priorities, sort_denominator, sort_kernel_points): new comparators.
(rebalance_priorities): new function.
(te_closure): use rebalance_priorities() on the worklist before working on it.

* testsuite/runok/regex.stp: add test case.

5 years agoPR23160,PR14690: fix syscalls that broke after adding CONTEXT->sregs in tapset/errno.stp
Jafeer Uddin [Fri, 7 Sep 2018 16:00:15 +0000 (12:00 -0400)]
PR23160,PR14690: fix syscalls that broke after adding CONTEXT->sregs in tapset/errno.stp

5 years agoUse offset to beginning of .probes section for sdt semaphores with stapdyn.
Stan Cox [Fri, 7 Sep 2018 03:45:33 +0000 (23:45 -0400)]
Use offset to beginning of .probes section for sdt semaphores with stapdyn.

* tapsets.cxx (sdt_query::handle_query_module):  stapdyn calls
Dyninst::SymtabAPI::Symtab::fileToMemOffset for semaphores, which wants
the fileOffset parameter to be relative to the containing section.

5 years agoAvoid name collision with the existing installed python tapset files
William Cohen [Fri, 7 Sep 2018 02:59:03 +0000 (22:59 -0400)]
Avoid name collision with the existing installed python tapset files

Systemtap cannot find the files in the custom tapset if they have the
same name as the official installed tapset files.  Adjusted the names
of the local python tapset files to allow systemtap to find the files
and use the contents for py2example.stp and py3example tests.

5 years agoCorrect permissions for systemtap.interactive/*.exp expect test files.
William Cohen [Thu, 6 Sep 2018 19:45:10 +0000 (15:45 -0400)]
Correct permissions for systemtap.interactive/*.exp expect test files.

5 years agoCorrect the permissions for interrupts-by-dev.* example files.
William Cohen [Thu, 6 Sep 2018 19:43:19 +0000 (15:43 -0400)]
Correct the permissions for interrupts-by-dev.* example files.

5 years agotapset/errno.stp: learn about CONTEXT->sregs
Frank Ch. Eigler [Wed, 5 Sep 2018 20:59:09 +0000 (16:59 -0400)]
tapset/errno.stp: learn about CONTEXT->sregs

In case the syscalls.* aliases fall back to the tp_* variant, allow
the returnval() and returnstr() functions in errno.stp to also look
at the CONTEXT->sregs pt_regs.  (NB: the returnstr() function
is distinct from the return_str variable set by probe aliases).

5 years agoParentheses after unary '&' with a target-symbol expression is now accepted
Yichun Zhang [Fri, 24 Aug 2018 03:22:30 +0000 (20:22 -0700)]
Parentheses after unary '&' with a target-symbol expression is now accepted

The translator did not allow stap expressions like `&(@var("foo"))`.

Added quite some tests to cover various use cases of the unary '&'
address-taking operator.

Updated NEWS to document this change.

5 years agoAdd _NR_* defines for syscalls that older kernels do not have
William Cohen [Wed, 5 Sep 2018 18:23:51 +0000 (14:23 -0400)]
Add _NR_* defines for syscalls that older kernels do not have

Older RHEL7 kernels do not implement syscalls for mlock2 et. al. and
there are no matching __NR_* defines for those missing syscalls.
Adding default defines so systemtap tapsets will work on these older
kernels.

5 years agoMinor Tcl code tweaks in the test_simple module
Yichun Zhang (agentzh) [Wed, 5 Sep 2018 17:29:16 +0000 (10:29 -0700)]
Minor Tcl code tweaks in the test_simple module

5 years agoMake -Wno-tautological-compare optional
Frank Ch. Eigler [Wed, 5 Sep 2018 16:49:15 +0000 (12:49 -0400)]
Make -Wno-tautological-compare optional

Older versions of gcc don't support this flag.

5 years agoPR23160,PR14690: fix more undeclared macro errors
Jafeer Uddin [Wed, 5 Sep 2018 14:05:28 +0000 (10:05 -0400)]
PR23160,PR14690: fix more undeclared macro errors

Moved contents of aux2_syscall.stp to aux_syscall.stp. Since the
contents of aux2_syscall.stp are going to be used by all syscalls,
doing this will cause aux_syscall.stp to always be included and so
will the header files containing the macros that are #included in
aux_syscall.stp.

5 years agoUpdate all my recently committed test files to use the new test_simple Tcl module
Yichun Zhang (agentzh) [Wed, 5 Sep 2018 03:26:49 +0000 (20:26 -0700)]
Update all my recently committed test files to use the new test_simple Tcl module

5 years agoAdd new Tcl/DejaGnu test module test_simple to simplify tests
Yichun Zhang (agentzh) [Tue, 4 Sep 2018 22:06:35 +0000 (15:06 -0700)]
Add new Tcl/DejaGnu test module test_simple to simplify tests

Ported the handy routines is(), isnt(), like(), unlike(), ok(), nok()
from Perl's Test::Simple module over to Tcl/DejaGnu as the test_simple
module. Also added the run_cmd_2way command to this module to run
an arbitrary shell command and to fetch the stderr, stdout, and exit
code from it.

Make use of these new test helpers in the return_no_val.exp and
ternary_op.exp test files to demonstrate its usage. It makes these test
files much simpler by avoiding a lot of boilerplate Tcl code.

The remaining test files I committed recently would get updated in
separate patches just to prevent this patch from getting too large.

5 years agoREADME: mention "make rpm" as possible build alternative
Frank Ch. Eigler [Tue, 4 Sep 2018 16:24:42 +0000 (12:24 -0400)]
README: mention "make rpm" as possible build alternative

5 years agoPR23160,PR14690: adapt 31 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit
Jafeer Uddin [Tue, 4 Sep 2018 15:16:11 +0000 (11:16 -0400)]
PR23160,PR14690: adapt 31 more syscalls for 4.17 __ARCH_sys_FOO and sys_enter/exit

5 years agoNEWS: mention stap-exporter
Frank Ch. Eigler [Mon, 3 Sep 2018 18:26:17 +0000 (14:26 -0400)]
NEWS: mention stap-exporter

5 years agoAdd support for return statements without values
Yichun Zhang (agentzh) [Sat, 25 Aug 2018 00:37:33 +0000 (17:37 -0700)]
Add support for return statements without values

For user-defined stap functions which do not return any values, it can
be convenient to allow *bare* return statements to take shortcuts in
the control flow of the function body.

The parser treats a following semicolon (';') or a closing curly bracket
('}') as a terminator for such bare return statements.

Added tests to cover various cases like use of plain 'return' in a
function actually returning some values. Also added tests to make sure
the pretty-printer adds a trailing semicolon for such bare return
stateuments for various arrangements. Both the "kernel" and "dyninst"
runtimes are covered.

A fix for the bpf translator is also included.

Updated NEWS to document this new feature.

5 years agoAvoid long lines in some test files.
Yichun Zhang (agentzh) [Fri, 31 Aug 2018 22:00:31 +0000 (15:00 -0700)]
Avoid long lines in some test files.

Updated tautological_cmp.exp and ternary_op.exp.

5 years agostap-exporter: add examples to default
Aaron Merey [Fri, 31 Aug 2018 20:34:18 +0000 (16:34 -0400)]
stap-exporter: add examples to default

* EXAMPLES/profiling: add prometheus probes to errno.stp, timeout.stp
and topsys.stp
* stap-exporter/default: add errno.stp timeout.stp, topsys.stp and
syscalllatency.stp scripts

5 years agoAdd new built-in tapset function abort()
Yichun Zhang (agentzh) [Fri, 24 Aug 2018 01:06:54 +0000 (18:06 -0700)]
Add new built-in tapset function abort()

The new built-in tapset function abort() is similar to exit(), but it
aborts the current probe handler (and any function calls in it) immediately.
It works with both the kernel and dyninst runtimes. The bpf runtime is not
yet supported.

Unlike error(), abort() cannot be caught by try {...} catch {...}.

Similar to exit(), abort() yeilds the zero process exit code.

fche thinks it is already too late to change the current behavior of
exit(), hence this new function. And he suggests the function name abort().

Also added corresponding tests for both abort() and exit(), including
tests for probe timer.profile + abort(), as suggested by fche. The tests
cover both the kernel and dyninst runtimes wherever possible.

This new function can be disabled by the '--compatible 3.3' option. Also
added tests for this.

Updated NEWS for this new feature.

5 years agoPR23160,PR14690: fix undeclared __NR_* macro error with tp_syscall.* probes
Jafeer Uddin [Fri, 31 Aug 2018 16:36:58 +0000 (12:36 -0400)]
PR23160,PR14690: fix undeclared __NR_* macro error with tp_syscall.* probes

5 years agoCorrect whythefail.meta test_check.
William Cohen [Fri, 31 Aug 2018 14:30:41 +0000 (10:30 -0400)]
Correct whythefail.meta test_check.

5 years agoUse returnval() rather than $return for various syscall tapset probes
William Cohen [Fri, 31 Aug 2018 14:09:31 +0000 (10:09 -0400)]
Use returnval() rather than $return for various syscall tapset probes

With newer linux 4.17 kernel some of the syscall tapset return probes
do not have $return available.  The example scripts have been changed
to use returnval() function instead of the missing $return.

5 years agoprometheus sample: syscallerrorsbypid.stp: add execname, fix cleanup
Frank Ch. Eigler [Fri, 31 Aug 2018 13:32:25 +0000 (09:32 -0400)]
prometheus sample: syscallerrorsbypid.stp: add execname, fix cleanup

Follow the lead ofsyscallsbypid.stp.  Add to stap-exporter defaults.

5 years agoUse a more stable function name for running the linetimes.stp tests
William Cohen [Thu, 30 Aug 2018 21:17:16 +0000 (17:17 -0400)]
Use a more stable function name for running the linetimes.stp tests

There have a been a number of changes in the Linux 4.17 kernel syscall
function names and a function named sys_nanosleep no longer exists in
the newer kernels.  Adjusting the tests to use similar function that
is less likely to be affected from the syscall name changes.

5 years agoHave whythefail.stp probe a function that's name has not changed
William Cohen [Thu, 30 Aug 2018 21:05:58 +0000 (17:05 -0400)]
Have whythefail.stp probe a function that's name has not changed

The Linux 4.17 kernel has made a number of changes in the syscall
function names.  These changes caused the whythefail.stp test to fail.
Rather than probing the sys_open function which no longer exists in
the 4.17 kernels the tests are now using the do_sys_open function
which remains the same.

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