* [Bug dyninst/15144] New: occasional (40%) stapdyn spin/hang during sdt.exp
@ 2013-02-13 15:24 fche at redhat dot com
2013-02-13 17:53 ` [Bug dyninst/15144] " fche at redhat dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: fche at redhat dot com @ 2013-02-13 15:24 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=15144
Bug #: 15144
Summary: occasional (40%) stapdyn spin/hang during sdt.exp
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dyninst
AssignedTo: systemtap@sourceware.org
ReportedBy: fche@redhat.com
Classification: Unclassified
With git systemtap, rawhide 3.8.0-rc7 kernel, dyninst 8.0,
# make installcheck RUNTESTFLAGS=sdt.exp
About half the time, we get a stapdyn hang/loop in the test:
executing: stap --runtime=dyninst -w
/home/fche/Private/DEVEL/DEVEL-systemtap/git/systemtap3/testsuite/systemtap.base/sdt.stp
sdt.c.exe.2 -c ./sdt.c.exe.2
... top shows one of the stapdyn threads spinning with 100% cpu
(gdb) bt
#0 0x00000031e18da4c7 in sched_yield () at
../sysdeps/unix/syscall-template.S:81
#1 0x00002aaaabc10ff5 in GeneratorLinux::evictFromWaitpid() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#2 0x00002aaaabc11079 in GeneratorLinux::~GeneratorLinux() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#3 0x00002aaaabc110a9 in GeneratorLinux::~GeneratorLinux() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#4 0x00000031e183944a in __cxa_finalize (d=0x2aaaabf04da0) at
cxa_finalize.c:55
#5 0x00002aaaabc0f513 in __do_global_dtors_aux () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#6 0x00007fffeb5c2ab0 in ?? ()
#7 0x00000031e140f9da in _dl_fini () at dl-fini.c:253
Backtrace stopped: frame did not save the PC
(gdb) info thread
Id Target Id Frame
2 Thread 0x2aaaad232700 (LWP 2167) "stapdyn" (running)
* 1 Thread 0x2aaaacc20a00 (LWP 2165) "stapdyn" (running)
(gdb) quit
... detaching sometimes kills the errant stapdyn and lets the test resume.
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* [Bug dyninst/15144] occasional (40%) stapdyn spin/hang during sdt.exp
2013-02-13 15:24 [Bug dyninst/15144] New: occasional (40%) stapdyn spin/hang during sdt.exp fche at redhat dot com
@ 2013-02-13 17:53 ` fche at redhat dot com
2013-02-14 18:38 ` fche at redhat dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: fche at redhat dot com @ 2013-02-13 17:53 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=15144
--- Comment #1 from Frank Ch. Eigler <fche at redhat dot com> 2013-02-13 17:53:42 UTC ---
global_var-m64-O2-dyninst (global_var.exp) has also triggered it.
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* [Bug dyninst/15144] occasional (40%) stapdyn spin/hang during sdt.exp
2013-02-13 15:24 [Bug dyninst/15144] New: occasional (40%) stapdyn spin/hang during sdt.exp fche at redhat dot com
2013-02-13 17:53 ` [Bug dyninst/15144] " fche at redhat dot com
@ 2013-02-14 18:38 ` fche at redhat dot com
2013-03-13 18:40 ` wcohen at redhat dot com
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: fche at redhat dot com @ 2013-02-14 18:38 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=15144
--- Comment #2 from Frank Ch. Eigler <fche at redhat dot com> 2013-02-14 18:37:51 UTC ---
Additional backtrace info from the affected process:
(gdb) bt
#0 0x00000031e18da4c7 in sched_yield () at
../sysdeps/unix/syscall-template.S:81
#1 0x00002aaaabc10ff5 in GeneratorLinux::evictFromWaitpid() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#2 0x00002aaaabc11079 in GeneratorLinux::~GeneratorLinux() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#3 0x00002aaaabc110a9 in GeneratorLinux::~GeneratorLinux() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#4 0x00000031e183944a in __cxa_finalize (d=0x2aaaabf04da0) at
cxa_finalize.c:55
#5 0x00002aaaabc0f513 in __do_global_dtors_aux () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#6 0x00007fff2a0c2cc0 in ?? ()
#7 0x00000031e140f9da in _dl_fini () at dl-fini.c:253
Backtrace stopped: frame did not save the PC
(gdb) info thread
Id Target Id Frame
2 Thread 0x2aaaad24c700 (LWP 4634) "stapdyn"
pthread_cond_wait@@GLIBC_2.3.2 ()
at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
* 1 Thread 0x2aaaacc20a00 (LWP 4632) "stapdyn" 0x00000031e18da4c7 in
sched_yield ()
at ../sysdeps/unix/syscall-template.S:81
(gdb) thread 2
[Switching to thread 2 (Thread 0x2aaaad24c700 (LWP 4634))]
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
185 62: movl (%rsp), %edi
(gdb) bt
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00002aaaabc248cd in CondVar::wait() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#2 0x00002aaaabc0eb48 in LinuxPtrace::main() () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#3 0x00002aaaabc2453c in thread_init(void*) () from
/usr/lib64/dyninst/libpcontrol.so.8.0
#4 0x00000031e2407c63 in start_thread (arg=0x2aaaad24c700) at
pthread_create.c:308
#5 0x00000031e18f524d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
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* [Bug dyninst/15144] occasional (40%) stapdyn spin/hang during sdt.exp
2013-02-13 15:24 [Bug dyninst/15144] New: occasional (40%) stapdyn spin/hang during sdt.exp fche at redhat dot com
2013-02-13 17:53 ` [Bug dyninst/15144] " fche at redhat dot com
2013-02-14 18:38 ` fche at redhat dot com
@ 2013-03-13 18:40 ` wcohen at redhat dot com
2015-05-22 22:55 ` jistone at redhat dot com
2017-05-16 16:00 ` scox at redhat dot com
4 siblings, 0 replies; 6+ messages in thread
From: wcohen at redhat dot com @ 2013-03-13 18:40 UTC (permalink / raw)
To: systemtap
http://sourceware.org/bugzilla/show_bug.cgi?id=15144
William Cohen <wcohen at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wcohen at redhat dot com
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* [Bug dyninst/15144] occasional (40%) stapdyn spin/hang during sdt.exp
2013-02-13 15:24 [Bug dyninst/15144] New: occasional (40%) stapdyn spin/hang during sdt.exp fche at redhat dot com
` (2 preceding siblings ...)
2013-03-13 18:40 ` wcohen at redhat dot com
@ 2015-05-22 22:55 ` jistone at redhat dot com
2017-05-16 16:00 ` scox at redhat dot com
4 siblings, 0 replies; 6+ messages in thread
From: jistone at redhat dot com @ 2015-05-22 22:55 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=15144
Josh Stone <jistone at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jistone at redhat dot com
--- Comment #3 from Josh Stone <jistone at redhat dot com> ---
I don't think we've seen this exact hang in a while -- perhaps fixed by this?
http://git.dyninst.org/?p=dyninst.git;a=commit;h=8e556b1d0ebd9ab1c5c47cdcfabafeb683ba90d8
"Make sure SIGUSR2 is cleared from masked signals before using it in PC."
(SIGUSR2 is how evictFromWaitpid() works.)
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* [Bug dyninst/15144] occasional (40%) stapdyn spin/hang during sdt.exp
2013-02-13 15:24 [Bug dyninst/15144] New: occasional (40%) stapdyn spin/hang during sdt.exp fche at redhat dot com
` (3 preceding siblings ...)
2015-05-22 22:55 ` jistone at redhat dot com
@ 2017-05-16 16:00 ` scox at redhat dot com
4 siblings, 0 replies; 6+ messages in thread
From: scox at redhat dot com @ 2017-05-16 16:00 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=15144
Stan Cox <scox at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |scox at redhat dot com
Resolution|--- |FIXED
--- Comment #4 from Stan Cox <scox at redhat dot com> ---
Seems consistenly okay now with:
dyninst-9.3.1-1.fc25.x86_64
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2013-02-13 15:24 [Bug dyninst/15144] New: occasional (40%) stapdyn spin/hang during sdt.exp fche at redhat dot com
2013-02-13 17:53 ` [Bug dyninst/15144] " fche at redhat dot com
2013-02-14 18:38 ` fche at redhat dot com
2013-03-13 18:40 ` wcohen at redhat dot com
2015-05-22 22:55 ` jistone at redhat dot com
2017-05-16 16:00 ` scox at redhat dot com
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