From: contemplating zombie <contemplatingzombie@gmail.com>
To: Adrien Kunysz <adrien@kunysz.be>
Cc: systemtap@sourceware.org
Subject: Re: Puzzling output of stp script
Date: Sun, 25 Dec 2011 05:56:00 -0000 [thread overview]
Message-ID: <CAO_gTC7QMu=R9EETyJsqnvfO1YnVDCi97JxEnuVa540THm_imA@mail.gmail.com> (raw)
In-Reply-To: <20111224191702.GA17069@chouffe>
[-- Attachment #1: Type: text/plain, Size: 19382 bytes --]
Hi,
Thanks for the response. I am running a custom compiled pristine
kernel 2.6.36 on ubuntu 10.04 KVM virtual machine.
Also attaching the output of stap-report.
-ctmzb
On Sat, Dec 24, 2011 at 2:17 PM, Adrien Kunysz <adrien@kunysz.be> wrote:
> On Sat, Dec 24, 2011 at 01:31:21PM -0500, contemplating zombie wrote:
>> I am new to systemtap and I was trying out following example script
>> given in the documentation:
>>
>> probe kernel.function("*@net/socket.c") {
>> printf ("%s -> %s\n", thread_indent(1), probefunc())
>> }
>>
>> probe kernel.function("*@net/socket.c").return {
>> printf ("%s <- %s\n", thread_indent(-1), probefunc())
>> }
>>
>> I sshed into a remote machine and executed it. What I see is that the
>> stack frames just keep on growing to right and do not return. Won't
>> that cause a stack overflow eventually?
>
> Rather than a stack overflow it is possible (and probably more likely)
> that SystemTap is missing some return probes somehow.
>
>> Here is the output:
>>
>> root@ubuntu:~# touch t.stp
>> root@ubuntu:~# emacs -nw t.stp
>> root@ubuntu:~# stap t.stp
>>
>> 0 sshd(804): -> sock_poll
>> 11 sshd(804): <- sock_poll
>> 0 sshd(804): -> sock_aio_read
>> 2 sshd(804): -> alloc_sock_iocb
>> 3 sshd(804): <- alloc_sock_iocb
>> 5 sshd(804): -> do_sock_read
>> 7 sshd(804): -> __sock_recvmsg
>> 9 sshd(804): -> __sock_recvmsg_nosec
>
> Notice how do_sock_read() supposedly never returns while it
> should return immediately after __sock_recvmsg() (at least
> in the current mainline kernel):
>
> 830 static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb,
> 831 struct file *file, const struct iovec *iov,
> 832 unsigned long nr_segs)
> 833 {
> ...
> 849 return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags);
> 850 }
>
> I guess there is some kind of optimisation that interacts poorly with
> debug symbols and/or the way SystemTap interpret them. Details about
> the relevant object code and or stap-report output would probably help.
>
>> 15 sshd(804): <- sock_aio_read
>> 32 sshd(804): -> sock_poll
>> 34 sshd(804): <- sock_poll
>> 44 sshd(804): -> sock_poll
>> 46 sshd(804): <- sock_poll
>> 12636 sshd(804): -> sock_poll
>> 12644 sshd(804): <- sock_poll
>> 12678 sshd(804): -> sock_poll
>> 12683 sshd(804): <- sock_poll
>> 12692 sshd(804): -> sock_aio_write
>> 12696 sshd(804): -> alloc_sock_iocb
>> 12700 sshd(804): <- alloc_sock_iocb
>> 12704 sshd(804): -> do_sock_write
>> 12711 sshd(804): -> __sock_sendmsg
>> 12763 sshd(804): <- sock_aio_write
>> 12773 sshd(804): -> sock_poll
>> 12775 sshd(804): <- sock_poll
>>
>> 162634 sshd(804): -> sock_poll
>> 162642 sshd(804): <- sock_poll
>> 162680 sshd(804): -> sock_poll
>> 162683 sshd(804): <- sock_poll
>> 162688 sshd(804): -> sock_aio_write
>> 162690 sshd(804): -> alloc_sock_iocb
>> 162692 sshd(804): <- alloc_sock_iocb
>> 162693 sshd(804): -> do_sock_write
>> 162695 sshd(804): -> __sock_sendmsg
>> 162770 sshd(804): <- sock_aio_write
>> 162777 sshd(804): -> sock_poll
>> 162780 sshd(804): <- sock_poll
>> 202760 sshd(804): -> sock_poll
>> 202765 sshd(804): <- sock_poll
>> 202774 sshd(804): -> sock_aio_read
>> 202776 sshd(804): -> alloc_sock_iocb
>> 202778 sshd(804): <- alloc_sock_iocb
>> 202780 sshd(804): -> do_sock_read
>> 202782 sshd(804): -> __sock_recvmsg
>> 202784 sshd(804): -> __sock_recvmsg_nosec
>> 202788 sshd(804): <- sock_aio_read
>> 202796 sshd(804): -> sock_poll
>> 202799 sshd(804): <- sock_poll
>> 202807 sshd(804): -> sock_poll
>> 202810 sshd(804): <- sock_poll
>> 232494 sshd(804): -> sock_poll
>> 232503 sshd(804): <- sock_poll
>> 232535 sshd(804): -> sock_poll
>> 232540 sshd(804): <- sock_poll
>> 232550 sshd(804): -> sock_aio_write
>> 232555 sshd(804): -> alloc_sock_iocb
>> 232559 sshd(804): <- alloc_sock_iocb
>> 232564 sshd(804): -> do_sock_write
>> 232569 sshd(804): -> __sock_sendmsg
>> 232648 sshd(804): <- sock_aio_write
>> 232656 sshd(804): -> sock_poll
>> 232659 sshd(804): <- sock_poll
>>
>> 362500 sshd(804): -> sock_poll
>> 362509 sshd(804): <- sock_poll
>> 362576 sshd(804): -> sock_poll
>> 362579 sshd(804): <- sock_poll
>> 362584 sshd(804): -> sock_aio_write
>> 362586 sshd(804): -> alloc_sock_iocb
>> 362588 sshd(804): <- alloc_sock_iocb
>> 362591 sshd(804): -> do_sock_write
>> 362593 sshd(804): -> __sock_sendmsg
>> 362655 sshd(804): <- sock_aio_write
>> 362663 sshd(804): -> sock_poll
>> 362666 sshd(804): <- sock_poll
>> 479663 sshd(804): -> sock_poll
>> 479668 sshd(804): <- sock_poll
>> 479677 sshd(804): -> sock_aio_read
>> 479679 sshd(804): -> alloc_sock_iocb
>> 479682 sshd(804): <- alloc_sock_iocb
>> 479684 sshd(804): -> do_sock_read
>> 479686 sshd(804): -> __sock_recvmsg
>> 479689 sshd(804): -> __sock_recvmsg_nosec
>> 479693 sshd(804): <- sock_aio_read
>> 479702 sshd(804): -> sock_poll
>> 479705 sshd(804): <- sock_poll
>> 479713 sshd(804): -> sock_poll
>> 479716 sshd(804): <- sock_poll
>> 492567 sshd(804): -> sock_poll
>> 492575 sshd(804): <- sock_poll
>> 492592 sshd(804): -> sock_poll
>> 492595 sshd(804): <- sock_poll
>> 492599 sshd(804): -> sock_aio_write
>> 492602 sshd(804): -> alloc_sock_iocb
>> 492605 sshd(804): <- alloc_sock_iocb
>> 492607 sshd(804): -> do_sock_write
>> 492610 sshd(804): -> __sock_sendmsg
>> 492651 sshd(804): <- sock_aio_write
>> 492662 sshd(804): -> sock_poll
>> 492666 sshd(804): <- sock_poll
>> 562635 sshd(804): -> sock_poll
>> 562645 sshd(804): <- sock_poll
>> 562692 sshd(804): -> sock_poll
>> 562696 sshd(804): <- sock_poll
>> 562701 sshd(804): -> sock_aio_write
>> 562704 sshd(804): -> alloc_sock_iocb
>> 562706 sshd(804): <- alloc_sock_iocb
>> 562709 sshd(804): -> do_sock_write
>> 562712 sshd(804): -> __sock_sendmsg
>> 562821 sshd(804): <- sock_aio_write
>> 562830 sshd(804): -> sock_poll
>> 562834 sshd(804): <- sock_poll
>> 762649 sshd(804): -> sock_poll
>> 762659 sshd(804): <- sock_poll
>> 762687 sshd(804): -> sock_poll
>> 762690 sshd(804): <- sock_poll
>> 762695 sshd(804): -> sock_aio_write
>> 762698 sshd(804): -> alloc_sock_iocb
>> 762701 sshd(804): <- alloc_sock_iocb
>> 762704 sshd(804): -> do_sock_write
>> 762706 sshd(804): -> __sock_sendmsg
>> 762749 sshd(804): <- sock_aio_write
>> 762757 sshd(804): -> sock_poll
>> 762761 sshd(804): <- sock_poll
>> 962447 sshd(804): -> sock_poll
>> 962458 sshd(804): <- sock_poll
>> 962525 sshd(804): -> sock_poll
>> 962534 sshd(804): <- sock_poll
>> 962548 sshd(804): -> sock_aio_write
>> 962552 sshd(804): -> alloc_sock_iocb
>> 962555 sshd(804): <- alloc_sock_iocb
>> 962558 sshd(804): -> do_sock_write
>> 962561 sshd(804): -> __sock_sendmsg
>> 962643 sshd(804): <- sock_aio_write
>> 962652 sshd(804): -> sock_poll
>> 962656 sshd(804): <- sock_poll
>> 1162558 sshd(804): -> sock_poll
>> 1162563 sshd(804): <- sock_poll
>> 1162587 sshd(804): -> sock_poll
>> 1162591 sshd(804): <- sock_poll
>> 1162596 sshd(804): -> sock_aio_write
>> 1162600 sshd(804): -> alloc_sock_iocb
>> 1162603 sshd(804): <- alloc_sock_iocb
>> 1162606 sshd(804): -> do_sock_write
>> 1162609 sshd(804): -> __sock_sendmsg
>> 1162652 sshd(804): <- sock_aio_write
>> 1162664 sshd(804): -> sock_poll
>> 1162668 sshd(804): <- sock_poll
>> 1362636 sshd(804): -> sock_poll
>> 1362647 sshd(804): <- sock_poll
>> 1362684 sshd(804): -> sock_poll
>> 1362688 sshd(804): <- sock_poll
>> 1362693 sshd(804): -> sock_aio_write
>> 1362697 sshd(804): -> alloc_sock_iocb
>> 1362700 sshd(804): <- alloc_sock_iocb
>> 1362704 sshd(804): -> do_sock_write
>> 1362707 sshd(804): -> __sock_sendmsg
>> 1362788 sshd(804): <- sock_aio_write
>> 1362801 sshd(804): -> sock_poll
>> 1362805 sshd(804): <- sock_poll
>> 1562553 sshd(804): -> sock_poll
>> 1562565 sshd(804): <- sock_poll
>> 1562617 sshd(804): -> sock_poll
>> 1562626 sshd(804): <- sock_poll
>> 1562639 sshd(804): -> sock_aio_write
>> 1562643 sshd(804): -> alloc_sock_iocb
>> 1562646 sshd(804): <- alloc_sock_iocb
>> 1562650 sshd(804): -> do_sock_write
>> 1562653 sshd(804): -> __sock_sendmsg
>> 1562696 sshd(804): <- sock_aio_write
>> 1562708 sshd(804): -> sock_poll
>> 1562713 sshd(804): <- sock_poll
>> 1762582 sshd(804): -> sock_poll
>> 1762588 sshd(804): <- sock_poll
>> 1762614 sshd(804): -> sock_poll
>> 1762618 sshd(804): <- sock_poll
>> 1762624 sshd(804): -> sock_aio_write
>> 1762627 sshd(804): -> alloc_sock_iocb
>> 1762631 sshd(804): <- alloc_sock_iocb
>> 1762635 sshd(804): -> do_sock_write
>> 1762638 sshd(804): -> __sock_sendmsg
>> 1762681 sshd(804): <- sock_aio_write
>> 1762692 sshd(804): -> sock_poll
>> 1762696 sshd(804): <- sock_poll
>> 1962573 sshd(804): -> sock_poll
>> 1962579 sshd(804): <- sock_poll
>> 1962605 sshd(804): -> sock_poll
>> 1962609 sshd(804): <- sock_poll
>> 1962615 sshd(804): -> sock_aio_write
>> 1962619 sshd(804): -> alloc_sock_iocb
>> 1962623 sshd(804): <- alloc_sock_iocb
>> 1962627 sshd(804): -> do_sock_write
>> 1962631 sshd(804): -> __sock_sendmsg
>> 1962714 sshd(804): <- sock_aio_write
>> 1962724 sshd(804): -> sock_poll
>> 1962729 sshd(804): <- sock_poll
>> 2162633 sshd(804): -> sock_poll
>> 2162646 sshd(804): <- sock_poll
>> 2162683 sshd(804): -> sock_poll
>> 2162688 sshd(804): <- sock_poll
>> 2162694 sshd(804): -> sock_aio_write
>> 2162698 sshd(804): -> alloc_sock_iocb
>> 2162702 sshd(804): <- alloc_sock_iocb
>> 2162706 sshd(804): -> do_sock_write
>> 2162710 sshd(804): -> __sock_sendmsg
>> 2162789 sshd(804): <- sock_aio_write
>> 2162802 sshd(804): -> sock_poll
>> 2162807 sshd(804): <- sock_poll
>> 2362633 sshd(804): -> sock_poll
>> 2362646 sshd(804): <- sock_poll
>> 2362684 sshd(804): -> sock_poll
>> 2362688 sshd(804): <- sock_poll
>> 2362695 sshd(804): -> sock_aio_write
>> 2362699 sshd(804): -> alloc_sock_iocb
>> 2362703 sshd(804): <- alloc_sock_iocb
>> 2362707 sshd(804): -> do_sock_write
>> 2362711 sshd(804): -> __sock_sendmsg
>> 2362757 sshd(804): <- sock_aio_write
>> 2362767 sshd(804): -> sock_poll
>> 2362772 sshd(804): <- sock_poll
>> 2562462 sshd(804): -> sock_poll
>> 2562479 sshd(804): <- sock_poll
>> 2562522 sshd(804): -> sock_poll
>> 2562527 sshd(804): <- sock_poll
>> 2562534 sshd(804): -> sock_aio_write
>> 2562538 sshd(804): -> alloc_sock_iocb
>> 2562542 sshd(804): <- alloc_sock_iocb
>> 2562547 sshd(804): -> do_sock_write
>> 2562551 sshd(804): -> __sock_sendmsg
>> 2562595 sshd(804): <- sock_aio_write
>> 2562605 sshd(804): -> sock_poll
>> 2562612 sshd(804): <- sock_poll
>> 2762583 sshd(804): -> sock_poll
>> 2762596 sshd(804): <- sock_poll
>> 2762638 sshd(804): -> sock_poll
>> 2762643 sshd(804): <- sock_poll
>> 2762649 sshd(804): -> sock_aio_write
>> 2762654 sshd(804): -> alloc_sock_iocb
>> 2762658 sshd(804): <- alloc_sock_iocb
>> 2762663 sshd(804): -> do_sock_write
>> 2762667 sshd(804): -> __sock_sendmsg
>> 2762751 sshd(804): <- sock_aio_write
>> 2762761 sshd(804): -> sock_poll
>> 2762766 sshd(804): <- sock_poll
>> 2962386 sshd(804): -> sock_poll
>> 2962392 sshd(804): <- sock_poll
>> 2962420 sshd(804): -> sock_poll
>> 2962425 sshd(804): <- sock_poll
>> 2962432 sshd(804): -> sock_aio_write
>> 2962437 sshd(804): ->
>> alloc_sock_iocb
>> 2962442 sshd(804): <-
>> alloc_sock_iocb
>> 2962446 sshd(804): -> do_sock_write
>> 2962451 sshd(804): ->
>> __sock_sendmsg
>> 2962496 sshd(804): <-
>> sock_aio_write
>> 2962510 sshd(804): -> sock_poll
>> 2962515 sshd(804): <- sock_poll
>> ^C3162600 sshd(804): -> sock_poll
>> 3162615 sshd(804): <- sock_poll
>> 3162648 sshd(804): -> sock_poll
>> 3162653 sshd(804): <- sock_poll
>> 3162660 sshd(804): ->
>> sock_aio_write
>> 3162665 sshd(804): ->
>> alloc_sock_iocb
>> 3162670 sshd(804): <-
>> alloc_sock_iocb
>> 3162675 sshd(804): ->
>> do_sock_write
>> 3162679 sshd(804): ->
>> __sock_sendmsg
>> 3162765 sshd(804): <-
>> sock_aio_write
>> 3162776 sshd(804): -> sock_poll
>> 3162782 sshd(804): <- sock_poll
>> 3184606 sshd(804): -> sock_poll
>> 3184613 sshd(804): <- sock_poll
>> 3184624 sshd(804): ->
>> sock_aio_read
>> 3184630 sshd(804): ->
>> alloc_sock_iocb
>> 3184635 sshd(804): <-
>> alloc_sock_iocb
>> 3184640 sshd(804): ->
>> do_sock_read
>> 3184644 sshd(804): ->
>> __sock_recvmsg
>> 3184649 sshd(804):
>> -> __sock_recvmsg_nosec
>> 3184657 sshd(804):
>> <- sock_aio_read
>> 3184668 sshd(804):
>> -> sock_poll
>> 3184674 sshd(804):
>> <- sock_poll
>> 3184688 sshd(804):
>> -> sock_poll
>> 3184693 sshd(804):
>> <- sock_poll
>> Pass 5: run failed. Try again with another '--vp 00001' option.
>> root@ubuntu:~#
>
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[-- Attachment #2: stap-report.out --]
[-- Type: application/octet-stream, Size: 5544 bytes --]
== stap -V ==
SystemTap translator/driver (version 1.0/0.143 Debian version 1.0-2)
Copyright (C) 2005-2009 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
== which stap ==
/usr/bin/stap
== locate --regex '/stap(run)?$' | xargs ls -ald ==
sh: locate: not found
drwx------ 8 root root 4096 2011-12-24 22:52 .
== printenv | egrep '^PATH=|^LD_LIBRARY_PATH=|^SYSTEMTAP_.*=|^XDG_DATA.*=' ==
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
== stap -vv -p4 -e 'probe begin {exit()}' ==
SystemTap translator/driver (version 1.0/0.143 Debian version 1.0-2)
Copyright (C) 2005-2009 Red Hat, Inc. and others
This is free software; see the source for copying conditions.
Session arch: x86_64 release: 2.6.36-custom
Created temporary directory "/tmp/staphGYd5R"
Searched '/usr/share/systemtap/tapset/x86_64/*.stp', found 3
Searched '/usr/share/systemtap/tapset/*.stp', found 56
Pass 1: parsed user script and 59 library script(s) in 80usr/10sys/97real ms.
Pass 2: analyzed script: 1 probe(s), 1 function(s), 0 embed(s), 0 global(s) in 0usr/0sys/3real ms.
Pass 3: using cached /root/.systemtap/cache/c5/stapconf_c5ad302dc003e3e6375caf18f4954e1f_473.h
/root/.systemtap/cache/fa/stap_fa1eee685d3cb11f72b4566f47ad3060_673.ko
Pass 3: using cached /root/.systemtap/cache/fa/stap_fa1eee685d3cb11f72b4566f47ad3060_673.c
Pass 4: using cached /root/.systemtap/cache/fa/stap_fa1eee685d3cb11f72b4566f47ad3060_673.ko
Running rm -rf /tmp/staphGYd5R
== gcc -v ==
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.4.3-4ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --enable-shared --enable-multiarch --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.4 --program-suffix=-4.4 --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-plugin --enable-objc-gc --disable-werror --with-arch-32=i486 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
== uname -a ==
Linux ubuntu 2.6.36-custom #1 SMP Thu Dec 15 20:53:34 UTC 2011 x86_64 GNU/Linux
== dmesg | egrep 'stap|systemtap' | tail -n 10 ==
== cat /proc/cpuinfo | egrep 'processor|vendor_id|model name' ==
processor : 0
vendor_id : GenuineIntel
model name : QEMU Virtual CPU version 0.12.5
processor : 1
vendor_id : GenuineIntel
model name : QEMU Virtual CPU version 0.12.5
processor : 2
vendor_id : GenuineIntel
model name : QEMU Virtual CPU version 0.12.5
processor : 3
vendor_id : GenuineIntel
model name : QEMU Virtual CPU version 0.12.5
== dpkg --list | egrep 'systemtap|elfutils|kernel|gcc' | awk '{print $2,$3}' | sort ==
gcc 4:4.4.3-1ubuntu1
gcc-4.4 4.4.3-4ubuntu5
gcc-4.4-base 4.4.3-4ubuntu5
kernel-package 12.032
libdrm2 2.4.18-1ubuntu3
libdrm-intel1 2.4.18-1ubuntu3
libgcc1 1:4.4.3-4ubuntu5
linux-firmware 1.34.7
linux-headers-2.6.32-37 2.6.32-37.81
linux-headers-2.6.32-37-generic 2.6.32-37.81
linux-headers-2.6.36-custom 2.6.36-custom-10.00.Custom
linux-headers-generic 2.6.32.37.43
linux-image-2.6.32-36-virtual 2.6.32-36.79
linux-image-2.6.36-custom 2.6.36-custom-10.00.Custom
linux-image-virtual 2.6.32.36.42
module-init-tools 3.11.1-2ubuntu1
systemtap 1.0-2
systemtap-runtime 1.0-2
udev 151-12.3
== egrep 'PROBE|TRACE|MARKER|_DEBUG_|MODULE' /lib/modules/2.6.36-custom/build/.config | grep -v not.set | sort | fmt -w 80 ==
CONFIG_AIC79XX_DEBUG_ENABLE=y CONFIG_AIC79XX_DEBUG_MASK=0
CONFIG_AIC7XXX_DEBUG_ENABLE=y CONFIG_AIC7XXX_DEBUG_MASK=0
CONFIG_ARCH_CPU_PROBE_RELEASE=y CONFIG_ARCH_MEMORY_PROBE=y
CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y CONFIG_BLK_DEV_IO_TRACE=y
CONFIG_CAN_PM_TRACE=y CONFIG_CAPI_TRACE=y CONFIG_CB710_DEBUG_ASSUMPTIONS=y
CONFIG_CONTEXT_SWITCH_TRACER=y CONFIG_DEBUG_BUGVERBOSE=y CONFIG_DEBUG_FS=y
CONFIG_DEBUG_INFO=y CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_MEMORY_INIT=y
CONFIG_DEBUG_RODATA=y CONFIG_DYNAMIC_FTRACE=y CONFIG_FTRACE_MCOUNT_RECORD=y
CONFIG_FTRACE_NMI_ENTER=y CONFIG_FTRACE=y CONFIG_FUNCTION_GRAPH_TRACER=y
CONFIG_FUNCTION_TRACER=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_GENERIC_TRACER=y
CONFIG_HAVE_ARCH_TRACEHOOK=y CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_HAVE_FTRACE_NMI_ENTER=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
CONFIG_HAVE_FUNCTION_TRACER=y CONFIG_HAVE_KPROBES=y CONFIG_HAVE_KRETPROBES=y
CONFIG_HAVE_MMIOTRACE_SUPPORT=y CONFIG_HAVE_OPTPROBES=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y CONFIG_KPROBE_EVENT=y CONFIG_KPROBES=y
CONFIG_KRETPROBES=y CONFIG_MMIOTRACE=y CONFIG_MODULE_SRCVERSION_ALL=y
CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MTD_DOCPROBE_ADDRESS=0
CONFIG_MTD_DOCPROBE=m CONFIG_MTD_GEN_PROBE=m CONFIG_MTD_JEDECPROBE=m
CONFIG_MTD_NAND_DISKONCHIP_PROBE_ADDRESS=0 CONFIG_MTD_QINFO_PROBE=m
CONFIG_NET_DCCPPROBE=m CONFIG_NETFILTER_XT_TARGET_TRACE=m CONFIG_NET_TCPPROBE=m
CONFIG_NOP_TRACER=y CONFIG_OCFS2_DEBUG_MASKLOG=y CONFIG_OPTPROBES=y
CONFIG_PM_TRACE_RTC=y CONFIG_PM_TRACE=y CONFIG_PNP_DEBUG_MESSAGES=y
CONFIG_SCSI_LPFC_DEBUG_FS=y CONFIG_STACKTRACE_SUPPORT=y
CONFIG_STACKTRACE=y CONFIG_TRACE_IRQFLAGS_SUPPORT=y CONFIG_TRACEPOINTS=y
CONFIG_USER_STACKTRACE_SUPPORT=y CONFIG_WIMAX_DEBUG_LEVEL=8
CONFIG_WIMAX_I2400M_DEBUG_LEVEL=8
== find /debugfs /proc /sys /dev -name '*kprobes*' 2>/dev/null | xargs grep . ==
/proc/sys/debug/kprobes-optimization:1
next prev parent reply other threads:[~2011-12-24 22:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAO_gTC6yXVN-6a-aj6YFy4Z_7wGaMRzbHTWWWdQOyWgD=g0rOQ@mail.gmail.com>
2011-12-24 19:14 ` contemplating zombie
2011-12-24 22:56 ` Adrien Kunysz
2011-12-25 5:56 ` contemplating zombie [this message]
2011-12-25 11:07 ` Josh Stone
2011-12-25 20:20 ` Adrien Kunysz
2011-12-25 23:59 ` Mark Wielaard
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