Dtrace for system call entries on a process crashes and produces kernel dump #86
Description
Running a trace for syscall entries on a command crashes dtrace.
As a side note, if I remove the flag -c and run the haproxy command on a separate window, it crashes the computer as soon as I type in the y in haproxy (not even running it)
Command
dtrace -n 'syscall:::entry /execname == "haproxy"/ { @[probefunc] = count() }' -c "haproxy -f haproxy_test.cfg"
Command Output
parent: waiting for child
parent: after waitpid pid=4640 status=137f
rd_loadobj_iter
rd_loadobj_iter: /lib/x86_64-linux-gnu/libc-2.19.so 0x7fba39e41000
rd_loadobj_iter: /lib/x86_64-linux-gnu/libdl-2.19.so 0x7fba3a207000
rd_loadobj_iter: /usr/lib/x86_64-linux-gnu/libelf-0.158.so 0x7fba3a40b000
rd_loadobj_iter: /lib/x86_64-linux-gnu/libpthread-2.19.so 0x7fba3a621000
rd_loadobj_iter: /lib/x86_64-linux-gnu/librt-2.19.so 0x7fba3a83f000
rd_loadobj_iter: /lib/x86_64-linux-gnu/ld-2.19.so 0x7fba3ac60000
proc-stub:rd_event_enable
proc-stub:rd_event_addr addr=(nil)
proc-stub:rd_event_addr addr=(nil)
proc-stub:rd_event_addr addr=(nil)
dtrace: description 'syscall:::entry ' matched 661 probes
PTRACE_TRACEME: Operation not permitted
child 4640 about to exec haproxy
dtrace: pid 4640 has exited
Kernel Output
[ 1116.800236] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 1116.800240] IP: < (null)>
[ 1116.800241] PGD 1ae988067 PUD 1ae98b067 PMD 0
[ 1116.800243] Oops: 0010 [#4] SMP
[ 1116.800245] Modules linked in: cfg80211 dtracedrv(POF) ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) snd_hda_codec_hdmi saa7134_alsa tuner_simple tuner_types tea5767 tuner hid_generic snd_usb_audio usbhid snd_usbmidi_lib hid intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_seq_midi snd_seq_midi_event kvm_intel kvm snd_hda_codec_realtek snd_rawmidi crct10dif_pclmul crc32_pclmul nvidia(POF) ghash_clmulni_intel snd_hda_intel bnep rfcomm aesni_intel rc_encore_enltv aes_x86_64 lrw gf128mul glue_helper ablk_helper bluetooth saa7134 snd_hda_codec snd_hwdep cryptd snd_pcm snd_seq tveeprom videobuf_dma_sg rc_core v4l2_common videobuf_core videodev serio_raw snd_seq_device drm snd_page_alloc lpc_ich snd_timer snd mei_me mei mac_hid soundcore video intel_smartconnect binfmt_misc parport_pc ppdev lp parport ahci libahci psmouse atl1c
[ 1116.800283] CPU: 3 PID: 4640 Comm: haproxy Tainted: PF D O 3.13.0-30-generic #54-Ubuntu
[ 1116.800284] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z77-DS3H, BIOS F5 05/11/2012
[ 1116.800285] task: ffff8801e91a17f0 ti: ffff8800bde80000 task.ti: ffff8800bde80000
[ 1116.800286] RIP: 0010:[<0000000000000000>] < (null)>
[ 1116.800288] RSP: 0018:ffff8800bde81f48 EFLAGS: 00010286
[ 1116.800289] RAX: 0000000000000038 RBX: 0000000000000000 RCX: 00007fb926391a10
[ 1116.800289] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[ 1116.800290] RBP: 00007fffd6076600 R08: 0000000000000000 R09: 0000000000001220
[ 1116.800291] R10: 00007fb926391a10 R11: 0000000000000246 R12: 00007fffd60765c0
[ 1116.800292] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 1116.800293] FS: 00007fb926391740(0000) GS:ffff88021ed80000(0000) knlGS:0000000000000000
[ 1116.800294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1116.800295] CR2: 0000000000000000 CR3: 00000001ae97d000 CR4: 00000000001407e0
[ 1116.800295] Stack:
[ 1116.800296] ffffffffa0fcd2c4 ffffffff8172ae9c 0000000000000000 0000000000000000
[ 1116.800298] 0000000000000000 00007fffd60765c0 00007fffd6076600 ffffffff8172aeff
[ 1116.800300] 0000000000000246 00007fb926391a10 0000000000001220 0000000000000000
[ 1116.800302] Call Trace:
[ 1116.800315] [] ? systrace_part1_sys_clone+0xb/0x1c [dtracedrv]
[ 1116.800318] [] ? tracesys+0x7e/0xe6
[ 1116.800320] [] ? tracesys+0xe1/0xe6
[ 1116.800321] Code: Bad RIP value.
[ 1116.800323] RIP < (null)>
[ 1116.800324] RSP
[ 1116.800325] CR2: 0000000000000000
[ 1116.800326] ---[ end trace f9799c9ceae785f9 ]---
Kernel
Linux trantor 3.13.0-30-generic #54-Ubuntu SMP Mon Jun 9 22:45:01 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux