Server Panic rebooted "BUG: unable to handle kernel paging request at ffffc8ffc91ac058" due to third party kernel module filepath inside function MEM_malloc.

Solution Verified - Updated -

Issue

BUG: unable to handle kernel paging request at ffffc8ffc91ac058
IP: [<ffffffffa072ca6e>] MEM_malloc+0x10e/0x260 [filepath]
Kernel PGD 0 
User   PGD 183fef4067 PUD 0 
Oops: 0002 [#1] SMP 
last sysfs file: /sys/devices/system/cpu/online
CPU 0 
Modules linked in: fuse tcp_diag inet_diag filepath(U) nfsd exportfs gsch(U) redirfs(U) autofs4 bmhook(U) tmhook(U) nfs lockd fscache auth_rpcgss nfs_acl sunrpc dsa_filter(P)(U) dsa_filter_hook(U) bonding iptable_filter ip_tables ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr ipv6 vfat fat microcode iTCO_wdt iTCO_vendor_support dcdbas ipmi_devintf power_meter acpi_ipmi ipmi_si ipmi_msghandler sg tg3 ptp pps_core shpchp i2c_i801 i2c_core lpc_ich mfd_core ext4 jbd2 mbcache sd_mod crc_t10dif megaraid_sas xhci_hcd ahci dm_mirror dm_region_hash dm_log dm_mod [last unloaded: speedstep_lib]

Pid: 28233, comm: oracle_28233_+a Tainted: P           -- ------------    2.6.32-754.35.1.el6.x86_64 #1 Dell Inc. PowerEdge R740xd/00WGD1
RIP: 0010:[<ffffffffa072ca6e>]  [<ffffffffa072ca6e>] MEM_malloc+0x10e/0x260 [filepath]
RSP: 0018:ffff8810b67ffc88  EFLAGS: 00010246
RAX: ffffc9001fabd000 RBX: ffffc9001fabd000 RCX: ffffffffa07311e5
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8810b67ffd08 R08: 8000000000000063 R09: ffffc9001fabd000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9001fabd038
R13: 00000000a96ef05c R14: 0000000000000008 R15: ffffc8ffc91ac058
FS:  00007fe3a899bf20(0000) GS:ffff880111000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc8ffc91ac058 CR3: 0000000faa458000 CR4: 00000000001607f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Process oracle_28233_+a (pid: 28233, threadinfo ffff8810b67fc000, task ffff8810d9dbcab0)
Stack:
 0000000000000008 0000000000000000 ffff8810b67ffd08 ffffffffa072e03f
<d> ffff88100000053c ffffffffa0731155 00000000a96ef05c ffffffffa07311e5
<d> ffff8810b67ffcd8 0000000100000246 ffff8810b67ffd08 0000000000000000
Call Trace: 
 [<ffffffffa072e03f>] ? TRACE_LogDo+0x4f/0x60 [filepath]
 [<ffffffffa0727928>] driver_ioctl+0xf8/0x960 [filepath]
 [<ffffffff81067f53>] ? __wake_up+0x53/0x70
 [<ffffffff811b8972>] vfs_ioctl+0x92/0xc0
 [<ffffffff811b8ac4>] do_vfs_ioctl+0x84/0x590
 [<ffffffff811b9051>] sys_ioctl+0x81/0xa0
 [<ffffffff815662c2>] ? system_call_after_swapgs+0xa2/0x152
 [<ffffffff815662ce>] ? system_call_after_swapgs+0xae/0x152
 [<ffffffff815662c2>] ? system_call_after_swapgs+0xa2/0x152
 [<ffffffff81566391>] system_call_fastpath+0x1f/0x3a
 [<ffffffff815662ce>] ? system_call_after_swapgs+0xae/0x152
Code: 44 89 6a 20 4d 63 ff 48 8b 4d b8 8b 11 48 89 58 10 44 89 70 28 89 50 24 8b 55 cc 89 50 2c 4c 89 fa 4f 8d 3c 3c 48 f7 da 83 e2 07 <41> c7 04 17 ef ba ab fe 48 89 45 a8 e8 01 f9 ff ff 48 8b 45 a8 
RIP  [<ffffffffa072ca6e>] MEM_malloc+0x10e/0x260 [filepath] 
 RSP <ffff8810b67ffc88>
CR2: ffffc8ffc91ac058

Environment

  • Red Hat Enterprise Linux
  • Third-party kernel module [filepath]

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