<div dir="ltr">Dear Sir/Madam,<div> I am Madhan , working as an embedded engineer in 5GTB. I am using lttng in petalinux 2019.2(kernel 4.19) .And getting a call Trace error. Refer the below log for more details.</div><div><br></div><div><br></div><div>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 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) lttng_ftrace(O) lttng_kprobes(O) lttng_clock(O) lttng_lib_ring_buffer(O) lttng_kretprobes(O) uio_pdrv_genirq<br>[ 164.056963] CPU: 1 PID: 4955 Comm: modprobe Tainted: G O 4.19.0-xilinx-v2019.2 #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 module lttng_tracer.<br>[ 195.622371] lttng_ring_buffer_client_overwrite: Unknown symbol 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 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 2022 aarch64 GNU/Linux<br>root@xilinx-zcu111-2019_2:~# [ 226.333565] lttng_ring_buffer_client_overwrite: gave up waiting for init of module lttng_tracer.<br>[ 226.342368] lttng_ring_buffer_client_overwrite: Unknown symbol lttng_last_tsc (err -16)<br>[ 257.053564] lttng_ring_buffer_client_overwrite: gave up waiting for init of module lttng_tracer.<br>[ 257.062358] lttng_ring_buffer_client_overwrite: Unknown symbol lttng_transport_register (err -16)<br>[ 287.773562] lttng_ring_buffer_client_overwrite: gave up waiting for init of module lttng_tracer.<br>[ 287.782356] lttng_ring_buffer_client_overwrite: Unknown symbol lttng_transport_unregister (err -16)<br>[ 318.493567] lttng_ring_buffer_client_overwrite: gave up waiting for init of module lttng_tracer.<br>[ 318.502364] lttng_ring_buffer_client_overwrite: Unknown symbol lttng_last_tsc (err -16)<br>[ 349.213564] lttng_ring_buffer_client_overwrite: gave up waiting for init of module lttng_tracer.<br>[ 349.222363] lttng_ring_buffer_client_overwrite: Unknown symbol lttng_transport_register (err -16)<br></div><div><br></div><div><br></div><div>Thank You </div><div>with regards</div><div>G Madhan Mohan</div></div>
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