Kernel panic occurred due to NULL pointer dereference in the function keeper_lookup().

Solution Verified - Updated -

Issue

  • Kernel panic occurred due to NULL pointer dereference in the function keeper_lookup().
[223140.396170] BUG: unable to handle kernel paging request at 000000009eb420d8
[223140.396231] IP: [<ffffffffc03d27e8>] keeper_lookup+0x38/0x70 [traps]
[223140.396273] PGD 0 
[223140.396288] Oops: 0000 [#1] SMP 
[223140.396310] Modules linked in: xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 tun bridge stp llc ebtable_filter devlink ebtables ip6table_filter ip6_tables iptable_filter traps(OE) sunrpc iTCO_wdt iTCO_vendor_support sb_edac intel_powerclamp coretemp intel_rapl iosf_mbi kvm_intel kvm ipmi_ssif irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd pcspkr joydev lpc_ich hpilo hpwdt ipmi_si ioatdma sg ipmi_devintf wmi ipmi_msghandler pcc_cpufreq acpi_power_meter binfmt_misc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic mgag200 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm ahci drm libahci crct10dif_pclmul
[223140.396762]  crct10dif_common igb crc32c_intel libata serio_raw hpsa ptp pps_core dca i2c_algo_bit drm_panel_orientation_quirks scsi_transport_sas dm_mirror dm_region_hash dm_log dm_mod
[223140.396862] CPU: 5 PID: 4887 Comm: splunkd Kdump: loaded Tainted: G           OE  ------------ T 3.10.0-1127.el7.x86_64 #1
[223140.396914] Hardware name: HP ProLiant DL380e Gen8, BIOS P73 08/02/2014
[223140.396947] task: ffff90b2ae5241c0 ti: ffff90b16a080000 task.ti: ffff90b16a080000
[223140.396983] RIP: 0010:[<ffffffffc03d27e8>]  [<ffffffffc03d27e8>] keeper_lookup+0x38/0x70 [traps]
[223140.397030] RSP: 0018:ffff90b16a083e98  EFLAGS: 00010202
[223140.397057] RAX: 00000000fffffffe RBX: 0000000000000008 RCX: 000000009eb420c8
[223140.398439] RDX: 0000000000000014 RSI: 00000000000012eb RDI: ffff90b339cb6000
[223140.399795] RBP: ffff90b16a083ef8 R08: ffff90b16a083ecc R09: ffff90b16a083ea0
[223140.401137] R10: 3046392d36373038 R11: 0000000000000293 R12: ffff90b2ae5241c0
[223140.402479] R13: ffff90b16a083f58 R14: 0000000000000000 R15: 0000000000000000
[223140.403826] FS:  00007f77c49ff700(0000) GS:ffff90b2af940000(0000) knlGS:0000000000000000
[223140.405176] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[223140.406514] CR2: 000000009eb420d8 CR3: 00000003fc76e000 CR4: 00000000001607e0
[223140.407866] Call Trace:
[223140.409222]  [<ffffffffc03d1efa>] ? uid_tracker_process_syscall+0xba/0x1d0 [traps]
[223140.410600]  [<ffffffffc03cc720>] probe_stats_print+0x620/0xe60 [traps]
[223140.411969]  [<ffffffff8be3c10e>] syscall_trace_enter+0x1fe/0x210
[223140.413343]  [<ffffffff8c59311d>] tracesys+0x5d/0xcc
[223140.414709] Code: 00 00 b8 ea ff ff ff 48 39 ca 75 4a 69 c6 01 00 37 9e c1 e8 17 48 8b 4c c7 08 b8 fe ff ff ff 48 85 c9 74 19 0f 1f 80 00 00 00 00 <39> 71 10 74 13 48 8b 09 48 85 c9 75 f3 b8 fe ff ff ff c3 0f 1f 
[223140.417613] RIP  [<ffffffffc03d27e8>] keeper_lookup+0x38/0x70 [traps]
[223140.419044]  RSP <ffff90b16a083e98>
[223140.420460] CR2: 000000009eb420d8

Environment

  • Red Hat Enterprise Linux 7
  • Kernel version: 3.10.0-1127.el7.x86_64
  • Third party module : traps

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