Kernel crash at atamptl_task_path_ctx_early_init+0x1e2.

Issue

• kernel crashed with below logs.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
IP: [<ffffffffa05c8fa2>] atamptl_task_path_ctx_early_init+0x1e2/0x6f0 [atamptl]
PGD 58fae3067 PUD 7fd14b067 PMD 0
Oops: 0000 [#1] SMP
last sysfs file: /sys/module/atamptl/version
CPU 8
Modules linked in: atamptl(U) asm(U) snumbd26(U) des_generic ecb md4 nls_utf8 cifs nfsd nfs_acl auth_rpcgss exportfs mptctl mptbase snapapi26(U) lockd sunrpc target_core_iblock target_core_file target_core_pscsi target_core_mod configfs bnx2fc cnic uio fcoe libfcoe libfc scsi_transport_fc scsi_tgt 8021q garp stp llc cpufreq_ondemand freq_table pcc_cpufreq cachefiles fscache(T) ipv6 vfat fat uinput microcode iTCO_wdt iTCO_vendor_support ipmi_devintf power_meter acpi_ipmi ipmi_si ipmi_msghandler sg sb_edac edac_core i2c_i801 i2c_core lpc_ich mfd_core tg3(U) ptp pps_core hpilo hpwdt usb_storage ext4 jbd2 mbcache sr_mod cdrom sd_mod crc_t10dif ahci xhci_hcd hpsa(U) wmi dm_mirror dm_region_hash dm_log dm_mod [last unloaded: asm]

Pid: 31500, comm: v3netd Tainted: G           ---------------  T 2.6.32-504.el6.x86_64 #1 HP ProLiant DL380 Gen9/ProLiant DL380 Gen9
RIP: 0010:[<ffffffffa05c8fa2>]  [<ffffffffa05c8fa2>] atamptl_task_path_ctx_early_init+0x1e2/0x6f0 [atamptl]
RSP: 0018:ffff880225ef7d28  EFLAGS: 00010216
RAX: 0000000000000000 RBX: ffff8804e1160c40 RCX: 0000000000000000
RDX: ffff8808577a8c00 RSI: ffff8807341d5000 RDI: ffff88047873f200
RBP: ffff880225ef7d98 R08: 0000000000000246 R09: 0000000000000fe0
R10: 000000000000003c R11: 0000000000000000 R12: ffff880225ef7d58
R13: ffff880225ef7d58 R14: ffff880225ef7d48 R15: ffff8804e1160cd0
FS:  00007f93775fe700(0000) GS:ffff88048e400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 00000007793b2000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process v3netd (pid: 31500, threadinfo ffff880225ef6000, task ffff8804e11eaae0)
Stack:
 ffff880225ef7d78 ffffffff811269ba ffff8807341d4000 ffff8804e1160c40
<d> ffff880225ef7d48 ffff880225ef7d48 ffff88084bc6f540 ffff8804e1160c40
<d> ffff880225ef7d98 ffff8805bc2ccf00 0000000000000000 ffffffffa05e0f68
Call Trace:
 [<ffffffff811269ba>] ? generic_file_aio_write+0xba/0x100
 [<ffffffffa05cc8ec>] atamptl_ioctl_start_user+0x6c/0x380 [atamptl]
 [<ffffffffa05d0abb>] atamptl_device_ioctl+0xa4b/0x1630 [atamptl]
 [<ffffffffa05c4759>] ? atamptl_file_callback_handler+0x139/0x1e0 [atamptl]
 [<ffffffffa05c483f>] ? atamptl_asm_event_handler+0x3f/0x50 [atamptl]
 [<ffffffff811a3752>] vfs_ioctl+0x22/0xa0
 [<ffffffffa05661c0>] ? asm_file_ioctl+0x90/0xa0 [asm]
 [<ffffffff811a38f4>] do_vfs_ioctl+0x84/0x580
 [<ffffffff810e5c87>] ? audit_syscall_entry+0x1d7/0x200
 [<ffffffff81019fd9>] ? ftrace_raw_event_sys_enter+0xd9/0x130
 [<ffffffff811a3e71>] sys_ioctl+0x81/0xa0
 [<ffffffff8100b288>] tracesys+0xd9/0xde
Code: e0 4d 39 ec 48 c7 43 38 00 00 00 00 49 8b 04 24 4c 89 65 a8 0f 84 db 00 00 00 4c 89 e3 49 89 c4 48 8b 53 38 48 8b 82 38 05 00 00 <48> 8b 40 18 48 85 c0 74 11 8b 10 85 d2 0f 84 87 04 00 00 f0 ff
RIP  [<ffffffffa05c8fa2>] atamptl_task_path_ctx_early_init+0x1e2/0x6f0 [atamptl]
 RSP <ffff880225ef7d28>
CR2: 0000000000000018