<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div><span id="zwchr" data-marker="__DIVIDER__">----- On Mar 16, 2022, at 8:17 AM, GOLLAMUDI MADHAN MOHAN <madhan.mohan@5g.iith.ac.in> wrote:<br></span></div><div data-marker="__QUOTED_TEXT__"><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div dir="ltr">hi sir,<div> lttng version 2.9.5 - Joannès </div><div>modinfo command is not available used $ lttng version command</div></div></blockquote><div><br></div><div><div>Hi,<br></div><div><br></div><div>Please keep the lttng-dev mailing list in CC, as this discussion started there. The</div><div>answers we come up with can be useful to others.</div><div><br></div><div>The version you provided here is the version of lttng-tools installed on your system,</div><div>which is not relevant to investigate your issue.</div><div><br></div><div>What is needed here is the version of lttng-modules: the Linux kernel modules implementing</div><div>the kernel tracing feature of LTTng. Those are different packages altogether.</div><div><br></div><div>May I recommend that you install the package containing the "modinfo" tool on your system</div><div>to query the lttng-modules version ?</div><div><br></div><div>An alternative to query the lttng-modules version, if you really cannot install modinfo, would</div><div>be:</div><div><br></div><div>strings /lib/modules/$(uname -r)/extra/lttng-tracer.ko | grep "^version="<br></div><div><br></div><div>Thank you,</div><div><br></div><div>Mathieu</div></div><div><br data-mce-bogus="1"></div><blockquote style="border-left:2px solid #1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><div dir="ltr"><div><br></div><br><br>Thank You<div> with regards<br>G Madhan Mohan<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Mar 15, 2022 at 9:19 PM Mathieu Desnoyers <<a href="mailto:mathieu.desnoyers@efficios.com" target="_blank" rel="nofollow noopener noreferrer">mathieu.desnoyers@efficios.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb( 204 , 204 , 204 );padding-left:1ex"><br>
<br>
----- On Mar 15, 2022, at 2:48 AM, lttng-dev <a href="mailto:lttng-dev@lists.lttng.org" target="_blank" rel="nofollow noopener noreferrer">lttng-dev@lists.lttng.org</a> wrote:<br>
<br>
> Dear Sir/Madam,<br>
> I am Madhan , working as an embedded engineer in 5GTB. I am using lttng in<br>
> petalinux 2019.2(kernel 4.19) .And getting a call Trace error. Refer the below<br>
> log for more details.<br>
<br>
> root@xilinx-zcu111-2019_2:~# lttng create<br>
> Spawning a session daemon<br>
> [ 163.902282] lttng_kretprobes: loading out-of-tree module taints kernel.<br>
> [ 163.987461] Unable to handle kernel paging request at virtual address<br>
> 00000000000010c0<br>
> [ 163.995379] Mem abort info:<br>
> [ 163.998179] ESR = 0x96000005<br>
> [ 164.001233] Exception class = DABT (current EL), IL = 32 bits<br>
> [ 164.007149] SET = 0, FnV = 0<br>
> [ 164.010203] EA = 0, S1PTW = 0<br>
> [ 164.013333] Data abort info:<br>
> [ 164.016218] ISV = 0, ISS = 0x00000005<br>
> [ 164.020054] CM = 0, WnR = 0<br>
> [ 164.023028] user pgtable: 4k pages, 39-bit VAs, pgdp = 00000000df6dd54e<br>
> [ 164.029646] [00000000000010c0] pgd=0000000000000000, pud=0000000000000000<br>
> [ 164.036447] Internal error: Oops: 96000005 [#1] SMP<br>
> [ 164.041318] Modules linked in: lttng_tracer(O+) lttng_statedump(O)<br>
> lttng_ftrace(O) lttng_kprobes(O) lttng_clock(O) lttng_lib_ring_buffer(O)<br>
> lttng_kretprobes(O) uio_pdrv_genirq<br>
> [ 164.056963] CPU: 1 PID: 4955 Comm: modprobe Tainted: G O 4.19.0-xilinx-v2019.2<br>
> #1<br>
> [ 164.065734] Hardware name: ZynqMP ZCU111 RevA (DT)<br>
> [ 164.070510] pstate: 60000005 (nZCv daif -PAN -UAO)<br>
> [ 164.075429] pc : lttng_tracepoint_notify+0x188/0x228 [lttng_tracer]<br>
> [ 164.081767] lr : lttng_tracepoint_notify+0x14c/0x228 [lttng_tracer]<br>
> [ 164.088016] sp : ffffff8011613a40<br>
> [ 164.091314] x29: ffffff8011613a40 x28: ffffff801163f000<br>
> [ 164.096618] x27: 0000000000000100 x26: ffffff800813c958<br>
> [ 164.101921] x25: ffffff8000e22758 x24: 0000000000000000<br>
> [ 164.107225] x23: 00000000000010c0 x22: ffffff8000e42ed8<br>
> [ 164.112528] x21: ffffffc87accc400 x20: ffffff8000e42ef8<br>
> [ 164.117832] x19: 0000000000000001 x18: 0000000000000000<br>
> [ 164.123135] x17: 0000000000000000 x16: 0000000000000000<br>
> [ 164.128439] x15: ffffffffffffffff x14: 0000000000000000<br>
> [ 164.133742] x13: 0000000000000000 x12: 0000000000000000<br>
> [ 164.139046] x11: 0000000000000001 x10: 0101010101010101<br>
> [ 164.144349] x9 : 6d64686b625e6f38 x8 : 706d75645f6c6f63<br>
> [ 164.149653] x7 : 6f746f72705f7039 x6 : ffffffc8778d5ec1<br>
> [ 164.154957] x5 : ffffff8009458000 x4 : 0000000000000000<br>
> [ 164.160260] x3 : ffffff8000db77a0 x2 : ffffffc87828a380<br>
> [ 164.165563] x1 : 0000000000000007 x0 : ffffff8000d13048<br>
> [ 164.170869] Process modprobe (pid: 4955, stack limit = 0x00000000e6162018)<br>
> [ 164.177725] Call trace:<br>
> [ 164.180235] lttng_tracepoint_notify+0x188/0x228 [lttng_tracer]<br>
> [ 164.186148] register_tracepoint_module_notifier+0x6c/0x98<br>
> [ 164.191709] lttng_tracepoint_init+0x54/0xc80 [lttng_tracer]<br>
> [ 164.197438] lttng_events_init+0x4c/0x1e0 [lttng_tracer]<br>
> [ 164.202734] do_one_initcall+0x68/0x1ec<br>
> [ 164.206562] do_init_module+0x60/0x1f0<br>
> [ 164.210302] load_module+0x1ca0/0x2270<br>
> [ 164.214035] __se_sys_finit_module+0xc0/0xd0<br>
> [ 164.218288] __arm64_sys_finit_module+0x24/0x30<br>
> [ 164.222802] el0_svc_common+0x98/0x100<br>
> [ 164.226543] el0_svc_handler+0x74/0x90<br>
> [ 164.230275] el0_svc+0x8/0xc<br>
> [ 164.233142] Code: 6b18003f 54fffc49 f9415c00 b8b8d817 (f94002f3)<br>
> [ 164.239226] ---[ end trace c1cc2d1f9d55794a ]---<br>
> [ 195.613567] lttng_ring_buffer_client_overwrite: gave up waiting for init of<br>
> module lttng_tracer.<br>
> [ 195.622371] lttng_ring_buffer_client_overwrite: Unknown symbol<br>
> lttng_transport_unregister (err -16)<br>
> ^C<br>
> root@xilinx-zcu111-2019_2:~# uname -a<br>
> Linux xilinx-zcu111-2019_2 4.19.0-xilinx-v2019.2 #1 SMP Mon Mar 14 15:09:26 UTC<br>
> 2022 aarch64 GNU/Linux<br>
> root@xilinx-zcu111-2019_2:~# uname -a<br>
> Linux xilinx-zcu111-2019_2 4.19.0-xilinx-v2019.2 #1 SMP Mon Mar 14 15:09:26 UTC<br>
> 2022 aarch64 GNU/Linux<br>
> root@xilinx-zcu111-2019_2:~# [ 226.333565] lttng_ring_buffer_client_overwrite:<br>
> gave up waiting for init of module lttng_tracer.<br>
> [ 226.342368] lttng_ring_buffer_client_overwrite: Unknown symbol lttng_last_tsc<br>
> (err -16)<br>
> [ 257.053564] lttng_ring_buffer_client_overwrite: gave up waiting for init of<br>
> module lttng_tracer.<br>
> [ 257.062358] lttng_ring_buffer_client_overwrite: Unknown symbol<br>
> lttng_transport_register (err -16)<br>
> [ 287.773562] lttng_ring_buffer_client_overwrite: gave up waiting for init of<br>
> module lttng_tracer.<br>
> [ 287.782356] lttng_ring_buffer_client_overwrite: Unknown symbol<br>
> lttng_transport_unregister (err -16)<br>
> [ 318.493567] lttng_ring_buffer_client_overwrite: gave up waiting for init of<br>
> module lttng_tracer.<br>
> [ 318.502364] lttng_ring_buffer_client_overwrite: Unknown symbol lttng_last_tsc<br>
> (err -16)<br>
> [ 349.213564] lttng_ring_buffer_client_overwrite: gave up waiting for init of<br>
> module lttng_tracer.<br>
> [ 349.222363] lttng_ring_buffer_client_overwrite: Unknown symbol<br>
> lttng_transport_register (err -16)<br>
<br>
What is the installed lttng-modules version ? <br>
<br>
You can query it with modinfo /lib/modules/$(uname -r)/extra/lttng-tracer.ko<br>
<br>
Thanks, <br>
<br>
Mathieu <br>
<br>
> Thank You<br>
> with regards<br>
> G Madhan Mohan<br>
<br>
> Disclaimer:- This footer text is to convey that this email is sent by one of the<br>
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-- <br>
Mathieu Desnoyers<br>
EfficiOS Inc.<br>
<a href="http://www.efficios.com" rel="noreferrer nofollow noopener noreferrer" target="_blank">http://www.efficios.com</a><br>
</blockquote></div>
<br>
<p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-size:11pt;font-family:'arial';color:rgb( 34 , 34 , 34 );vertical-align:baseline;white-space:pre-wrap;background-color:yellow">Disclaimer:- </span><span style="background-color:rgb( 255 , 255 , 255 );color:rgb( 34 , 34 , 34 );font-size:small">This </span><span style="background-color:rgb( 255 , 255 , 255 );color:rgb( 34 , 34 , 34 );font-size:small">footer text is to convey that this email is sent by one of the </span><span style="background-color:rgb( 255 , 255 , 255 );color:rgb( 34 , 34 , 34 );font-size:small">users of IITH. So, do not mark it as SPAM.</span></p><br></blockquote></div><div><br></div><div data-marker="__SIG_POST__">-- <br></div><div>Mathieu Desnoyers<br>EfficiOS Inc.<br>http://www.efficios.com</div></div></body></html>