Kernel panic in _Z33gpfsIsCifsBypassTraversalCheckingv() routine of GPFS ( General Parallel File System ).

Solution Unverified - Updated -

Issue

  • Kernel panic with following call traces.
BUG: unable to handle kernel paging request at ffffc900242706cc
IP: [<ffffffffa03bda87>] _Z33gpfsIsCifsBypassTraversalCheckingv+0x7/0x10 [mmfs26]
PGD c3fc15067 PUD 183febf067 PMD 181734c067 PTE 0
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/system/cpu/cpu15/cache/index2/shared_cpu_map
CPU 12 
Modules linked in: ipmi_si mpt2sas scsi_transport_sas raid_class mptctl mptbase ipmi_devintf ipmi_msghandler dell_rbu mmfs26(U) mmfslinux(U) tracedev(U) autofs4 sunrpc bonding 8021q garp stp llc ipv6 power_meter dcdbas microcode iTCO_wdt iTCO_vendor_support sr_mod cdrom ses enclosure i7core_edac edac_core sg ixgbe dca mdio bnx2 dm_round_robin ext4 mbcache jbd2 sd_mod crc_t10dif usb_storage pata_acpi ata_generic ata_piix megaraid_sas qla2xxx scsi_transport_fc scsi_tgt dm_multipath dm_mirror dm_region_hash dm_log dm_mod [last unloaded: ipmi_si]

Pid: 3042, comm: bash Not tainted 2.6.32-279.el6.x86_64 #1 Dell Inc. PowerEdge M610/0V56FN
RIP: 0010:[<ffffffffa03bda87>]  [<ffffffffa03bda87>] _Z33gpfsIsCifsBypassTraversalCheckingv+0x7/0x10 [mmfs26]
RSP: 0018:ffff880aa1063b40  EFLAGS: 00010246
RAX: ffffc90024255000 RBX: ffff880aa1063bd8 RCX: 0000000000000002
RDX: 00000000ffffffff RSI: ffff880c1ea1f140 RDI: ffff880b250d5500
RBP: ffff880aa1063b98 R08: 0000000000000000 R09: 0000000000000000
R10: ffff880aa1063c90 R11: 0000000000000246 R12: 0000000000000000
R13: ffff880aa1063c90 R14: 0000000000000000 R15: ffff8812e40dca50
FS:  00007f20f4eb4700(0000) GS:ffff880c6a6c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc900242706cc CR3: 0000000adf978000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process bash (pid: 3042, threadinfo ffff880aa1062000, task ffff880b250d5500)
Stack:
 ffffffffa033a836 ffffea0000000041 0000000000000008 ffff880c40021b08
<d> 0000000000000001 00000010a1062000 ffff8812e40dc800 0000000000000001
<d> ffff880aa1063bd8 ffff880c215957c0 ffff8812e40dca50 ffff880aa1063cc8
Call Trace:
 [<ffffffffa033a836>] ? getCred+0x116/0x290 [mmfslinux]
 [<ffffffffa033c9a6>] gpfs_i_permission+0x1b6/0x300 [mmfslinux]
 [<ffffffff81113ece>] ? find_get_page+0x1e/0xa0
 [<ffffffff811141d7>] ? unlock_page+0x27/0x30
 [<ffffffff8113f009>] ? __do_fault+0x449/0x510
 [<ffffffff8118982d>] __link_path_walk+0xad/0x1030
 [<ffffffff81048ac7>] ? pte_alloc_one+0x37/0x50
 [<ffffffff8118aa3a>] path_walk+0x6a/0xe0
 [<ffffffff8118bc41>] do_filp_open+0x201/0xd60
 [<ffffffff8104452c>] ? __do_page_fault+0x1ec/0x480
 [<ffffffff8150326e>] ? do_page_fault+0x3e/0xa0
 [<ffffffff81500625>] ? page_fault+0x25/0x30
 [<ffffffff81198182>] ? alloc_fd+0x92/0x160
 [<ffffffff81178639>] do_sys_open+0x69/0x140
 [<ffffffff81178750>] sys_open+0x20/0x30
 [<ffffffff8100b0f2>] system_call_fastpath+0x16/0x1b
Code: ec 90 66 90 31 c0 89 3d 20 1d 11 00 c3 90 66 66 90 66 66 90 8b 05 16 1d 11 00 c3 90 66 66 66 90 66 66 66 90 48 8b 05 b9 e0 11 00 <8b> 80 cc b6 01 00 c3 66 90 55 48 89 f5 53 48 89 fb 48 83 ec 08 
RIP  [<ffffffffa03bda87>] _Z33gpfsIsCifsBypassTraversalCheckingv+0x7/0x10 [mmfs26]
 RSP <ffff880aa1063b40>
CR2: ffffc900242706cc

Environment

  • Red Hat Enterprise Linux 6
  • kernel-2.6.32-279.el6
  • GPFS ( General Parallel File System )
  • mmfs26(U), mmfslinux(U)

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