Server experiencing warning logs "CPU: X PID: xx at kernel/trace/trace_kprobe.c"

Issue

• Below WARNING logs are present in /var/log/messages file :

  • RHEL 6:

  Apr 27 07:00:01 srv1 kernel: ------------[ cut here ]------------
  Apr 27 07:00:01 srv1 kernel: WARNING: at kernel/trace/trace_kprobe.c:1715 kprobe_dispatcher+0x1ff/0x210() (Not tainted)
  Apr 27 07:00:01 srv1 kernel: Hardware name: PRIMERGY RX300 S6             
  Apr 27 07:00:01 srv1 kernel: profile buffer not large enough
  Apr 27 07:00:01 srv1 kernel: Modules linked in: inet_diag mptctl mptbase cpufreq_ondemand acpi_cpufreq freq_table mper
  f bonding ipv6 power_meter acpi_ipmi ipmi_si ipmi_msghandler microcode iTCO_wdt iTCO_vendor_support sg i2c_i801 lpc_ic
  h mfd_core igb dca i2c_algo_bit i2c_core ptp pps_core i7core_edac edac_core shpchp ext4 jbd2 mbcache sr_mod cdrom sd_m
  od crc_t10dif pata_acpi ata_generic ata_piix megaraid_sas dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_
  wait_scan]
  Apr 27 07:00:01 srv1 kernel: Pid: 28875, comm: khelper Not tainted 2.6.32-754.43.1.el6.x86_64 #1
  Apr 27 07:00:01 srv1 kernel: Call Trace:
  Apr 27 07:00:01 srv1 kernel: [<ffffffff810818d1>] ? warn_slowpath_common+0x91/0xe0
  Apr 27 07:00:01 srv1 kernel: [<ffffffff810819d6>] ? warn_slowpath_fmt+0x46/0x60
  Apr 27 07:00:01 srv1 kernel: [<ffffffff81565aff>] ? kprobe_dispatcher+0x1ff/0x210
  Apr 27 07:00:01 srv1 kernel: [<ffffffff815628a1>] ? opt_pre_handler+0x61/0x90
  Apr 27 07:00:01 srv1 kernel: [<ffffffff8156184c>] ? optimized_callback+0xac/0xc0
  Apr 27 07:00:01 srv1 kernel: [<ffffffff811ac551>] ? do_execve+0x1/0x2c0
  Apr 27 07:00:01 srv1 kernel: [<ffffffff8100968a>] ? sys_execve+0x4a/0x80
  Apr 27 07:00:01 srv1 kernel: [<ffffffff81567898>] ? kernel_execve+0x68/0xd0
  Apr 27 07:00:01 srv1 kernel: [<ffffffff810a3f91>] ? ____call_usermodehelper+0x131/0x140
  Apr 27 07:00:01 srv1 kernel: [<ffffffff810a42d0>] ? __call_usermodehelper+0x0/0xd0
  Apr 27 07:00:01 srv1 kernel: [<ffffffff81567820>] ? child_rip+0x20/0x30
  Apr 27 07:00:01 srv1 kernel: [<ffffffff810a42d0>] ? __call_usermodehelper+0x0/0xd0
  Apr 27 07:00:01 srv1 kernel: [<ffffffff810a3e60>] ? ____call_usermodehelper+0x0/0x140
  Apr 27 07:00:01 srv1 kernel: [<ffffffff81567800>] ? child_rip+0x0/0x30
  Apr 27 07:00:01 srv1 kernel: ---[ end trace 7b41a93efafa95d0 ]---
  

  • RHEL 7:

  Oct 22 17:42:33 hostname kernel: ------------[ cut here ]------------
  Oct 22 17:42:33 hostname kernel: WARNING: CPU: 0 PID: 2702 at kernel/trace/trace_kprobe.c:1194 kprobe_dispatcher+0x5ca/0x5e0
  Oct 22 17:42:33 hostname kernel: profile buffer not large enough    <<<<<<<<
  Oct 22 17:42:33 hostname kernel: Modules linked in:
  Oct 22 17:42:33 hostname kernel: ipt_REJECT nf_reject_ipv4 nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter vmw_vsock_vmci_transport vsock sunrpc drbg ansi_cprng dm_crypt xfs libcrc32c sb_edac iosf_mbi crc32_pclmul ghash_clmulni_intel ppdev aesni_intel vmw_balloon lrw gf128mul glue_helper ablk_helper cryptd joydev pcspkr sg vmw_vmci i2c_piix4 parport_pc parport pcc_cpufreq binfmt_misc ip_tables ext4 mbcache jbd2 sr_mod cdrom ata_generic pata_acpi vmwgfx drm_kms_helper    sd_mod crc_t10dif crct10dif_generic syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm crct10dif_pclmul crct10dif_common crc32c_intel nfit ata_piix libnvdimm libata serio_raw vmxnet3 vmw_pvscsi drm_panel_orientation_quirks dm_mirror dm_region_hash dm_log dm_mod
  Oct 22 17:42:33 hostname kernel: CPU: 0 PID: 2702 Comm: dracut Not tainted 3.10.0-1062.1.2.el7.x86_64 #1
  Oct 22 17:42:33 hostname kernel: Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 12/12/2018
  Oct 22 17:42:33 hostname kernel: Call Trace:
  Oct 22 17:42:33 hostname kernel: [<ffffffff849792c2>] dump_stack+0x19/0x1b
  Oct 22 17:42:33 hostname kernel: [<ffffffff8429a878>] __warn+0xd8/0x100
  Oct 22 17:42:33 hostname kernel: [<ffffffff8429a8ff>] warn_slowpath_fmt+0x5f/0x80
  Oct 22 17:42:33 hostname kernel: [<ffffffff8498c03a>] ? fetch_deref_string_size+0x5a/0x90
  Oct 22 17:42:33 hostname kernel: [<ffffffff8498bd4a>] kprobe_dispatcher+0x5ca/0x5e0
  Oct 22 17:42:33 hostname kernel: [<ffffffff84987d64>] aggr_pre_handler+0x54/0xb0
  Oct 22 17:42:33 hostname kernel: [<ffffffff84450bb1>] ? do_execve_common.isra.24+0x1/0x880
  Oct 22 17:42:33 hostname kernel: [<ffffffff84986eda>] kprobe_ftrace_handler+0xba/0x120
  Oct 22 17:42:33 hostname kernel: [<ffffffff84450bb5>] ? do_execve_common.isra.24+0x5/0x880
  Oct 22 17:42:33 hostname kernel: [<ffffffff84450bb0>] ? prepare_bprm_creds+0x80/0x80
  Oct 22 17:42:33 hostname kernel: [<ffffffff844516c9>] ? SyS_execve+0x29/0x30
  Oct 22 17:42:33 hostname kernel: [<ffffffff843600b4>] ftrace_ops_list_func+0xf4/0x120
  Oct 22 17:42:33 hostname kernel: [<ffffffff849909a4>] ftrace_regs_call+0x5/0x81
  Oct 22 17:42:33 hostname kernel: [<ffffffff84450bb1>] ? do_execve_common.isra.24+0x1/0x880
  Oct 22 17:42:33 hostname kernel: [<ffffffff84450bb5>] ? do_execve_common.isra.24+0x5/0x880
  Oct 22 17:42:33 hostname kernel: [<ffffffff84985459>] ? kretprobe_trampoline_holder+0x9/0x9
  Oct 22 17:42:33 hostname kernel: [<ffffffff8498d478>] stub_execve+0x48/0x80
  Oct 22 17:42:33 hostname kernel: ---[ end trace 8cd94f8d40303625 ]---