Kernel panic at_Z9NextTokenPc() function.

Issue

• Kernel panic occurred during NULL pointer dereference inside _Z9NextTokenPc() function.

Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: 
 [<ffffffff884a5018>] :sisips:_Z9NextTokenPc+0x8/0x60
PGD 2251b067 PUD 7a413067 PMD 0 
Oops: 0000 [1] SMP 
last sysfs file: /devices/system/cpu/cpu3/topology/thread_siblings
CPU 0 
Modules linked in: sunrpc vsock(U) vmmemctl(U) acpiphp sisips(PU) ext3 jbd dm_multipath scsi_dh video backlight sbs power_meter hwmon i2c_ec dell_wmi wmi button battery asus_acpi acpi_memhotplug ac parport_pc lp parport i2c_piix4 sg vmci(U) pcspkr i2c_core floppy tpm_tis e1000 tpm ide_cd shpchp serio_raw tpm_bios cdrom pvscsi(U) vmxnet3(U) vmxnet(U) dm_raid45 dm_message dm_region_hash dm_mem_cache dm_snapshot dm_zero dm_mirror dm_log dm_mod ahci ata_piix libata mptspi mptscsih mptbase scsi_transport_spi sd_mod scsi_mod ext4 jbd2 crc16 uhci_hcd ohci_hcd ehci_hcd
Pid: 6774, comm: sh Tainted: P     --------------------    2.6.18-400.1.1.el5 #1
RIP: 0010:[<ffffffff884a5018>]  [<ffffffff884a5018>] :sisips:_Z9NextTokenPc+0x8/0x60
RSP: 0018:ffff81007d6bfd00  EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff81023b5e1763 RSI: ffff81023ad60de3 RDI: 0000000000000000
RBP: ffff81023d34d000 R08: ffff81023d273168 R09: 545f35322d32305f
R10: 43545f534e5f5743 R11: 30325f4452522720 R12: ffff81023d34d000
R13: 0000000000001a76 R14: ffff81007d6bfee8 R15: 0000000000000001
FS:  00002af01d1b7490(0000) GS:ffffffff80436000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 000000009782b000 CR4: 00000000000006a0
Process sh (pid: 6774, threadinfo ffff81007d6be000, task ffff81019c148830)
Stack:  ffffffff884a50cd ffff81007d6bfd38 ffffffff884a8d35 ffff810200030002
 ffff81023d0ed980 ffff81023d34d000 ffffffff884a8d74 ffff810200030002
 ffff81023ad60de0 0000000000001a76 ffff81023d0ed980 0000000000000000
Call Trace:
 [<ffffffff884a50cd>] :sisips:_ZN13PathAttribute17tokenizeArgumentsEPc+0x1d/0x30
 [<ffffffff884a8d35>] :sisips:_ZN7Process14setCommandLineER19UnicodeStringBuffer+0x85/0xa0
 [<ffffffff884a8d74>] :sisips:_ZN7Process14setCommandLineEPKc+0x24/0x40
 [<ffffffff8848f228>] :sisips:_Z10GetProcessi+0x158/0x390
 [<ffffffff80008d6a>] __handle_mm_fault+0x5f5/0x103b
 [<ffffffff88490546>] :sisips:hook_open+0xa6/0x250
 [<ffffffff800671e1>] do_page_fault+0x4cc/0x842
 [<ffffffff8005ddf9>] error_exit+0x0/0x84
 [<ffffffff8005d29e>] tracesys+0xd5/0xdf
 [<ffffffff8009ccc3>] recalc_sigpending_and_wake+0x9/0x1a
 [<ffffffff8005d29e>] tracesys+0xd5/0xdf


Code: 0f b6 00 3c 22 74 04 3c 27 75 29 48 83 c1 01 0f be f0 0f b6 
RIP  [<ffffffff884a5018>] :sisips:_Z9NextTokenPc+0x8/0x60