Kernel panic with "Bad RIP value" after the message "Cannot unload Security module." showing.

Solution In Progress - Updated -

Issue

  • Panic occurs with below log.
Stop Security module before unloading.
Cannot unload Security module.
BUG: unable to handle kernel paging request at ffffffffa02f57a0
IP: [<ffffffffa02f57a0>] 0xffffffffa02f57a0
PGD 1a87067 PUD 1a8b063 PMD 43479b067 PTE 0
Oops: 0010 [#1] SMP 
last sysfs file: /sys/devices/system/cpu/online
CPU 1 
Modules linked in: tcp_diag inet_diag nfs lockd fscache auth_rpcgss nfs_acl sunrpc iptable_filter ip_tables vsock(U) vmci(U) ipv6 e1000 sg vmware_balloon microcode i2c_piix4 i2c_core shpchp ext4 jbd2 mbcache sd_mod crc_t10dif sr_mod cdrom pvscsi(U) vmw_pvscsi pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: RedCastle]

Pid: 45239, comm: udevd Tainted: P           ---------------    2.6.32-358.23.2.el6.x86_64 #1 VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform
RIP: 0010:[<ffffffffa02f57a0>]  [<ffffffffa02f57a0>] 0xffffffffa02f57a0
RSP: 0018:ffff880434031f80  EFLAGS: 00010293
RAX: 0000000000000002 RBX: 00007fbf9193a950 RCX: 0000000000000000
RDX: 00000000000001b6 RSI: 0000000000000000 RDI: 00007fbf90f205bf
RBP: 00007fff9fa47c90 R08: 00007fbf90f1f257 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fbf90f1f256 R14: 0000000000000008 R15: 00007fbf90e9fdc0
FS:  00007fbf90edd7a0(0000) GS:ffff880038020000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffa02f57a0 CR3: 0000000438504000 CR4: 00000000000407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process udevd (pid: 45239, threadinfo ffff880434030000, task ffff880435055540)
Stack:
 ffffffff8100b072 0000000000000246 0000000000000000 0000000000000000
<d> 00007fbf90f1f257 0000000000000002 0000000000000000 00000000000001b6
<d> 0000000000000000 00007fbf90f205bf 0000000000000002 00007fbf9080d310
Call Trace:
 [<ffffffff8100b072>] ? system_call_fastpath+0x16/0x1b
Code:  Bad RIP value.
RIP  [<ffffffffa02f57a0>] 0xffffffffa02f57a0
 RSP <ffff880434031f80>
CR2: ffffffffa02f57a0

Environment

  • Red Hat Enterprise Linux 6
  • RedCastle 3rd party module.

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