Kernel panics due to a stack overrun with vxodm/vxfs task data

Issue

• Kernel panics due to a stack overrun with vxodm/vxfs task data

BUG: scheduling while atomic: oracle/40855/0xffff8810
BUG: unable to handle kernel NULL pointer dereference at 0000000000000178
IP: [<ffffffff810549df>] check_preempt_wakeup+0x17f/0x260
PGD 640bc0067 PUD 640bbd067 PMD 0 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/system/node/node3/meminfo
CPU 0 
Modules linked in: xfs ext3 jbd ext2 bridge nfs lockd fscache nfs_acl auth_rpcgss vxodm(P)(U) amf(P)(U) vxfen(P)(U) gab(P)(U) llt(P)(U) autofs4 sunrpc dmpjbod(P)(U) dmpap(P)(U) dmpaa(P)(U) vxspec(P)(U) vxio(P)(U) vxdmp(P)(U) bonding 8021q garp stp llc ipv6 vxportal(P)(U) fdd(P)(U) vxfs(P)(U) exportfs dcdbas microcode sb_edac edac_core iTCO_wdt iTCO_vendor_support shpchp ioatdma acpi_pad power_meter sg ixgbe dca bnx2x libcrc32c mdio ext4 mbcache jbd2 sd_mod crc_t10dif megaraid_sas wmi lpfc scsi_transport_fc scsi_tgt dm_mirror dm_region_hash dm_log dm_mod [last unloaded: speedstep_lib]

Pid: 1908, comm: gzip Tainted: P        W  ---------------    2.6.32-279.el6.x86_64 #1 Dell Inc. PowerEdge M820/034PY5
RIP: 0010:[<ffffffff810549df>]  [<ffffffff810549df>] check_preempt_wakeup+0x17f/0x260
RSP: 0000:ffff8800282034e0  EFLAGS: 00010087
RAX: ffff88105c7166e8 RBX: ffff880028216680 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff8807f82ce080 RDI: ffff8800282166e8
RBP: ffff880028203530 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88201d1c3500 R15: 0000000000000000
FS:  00007f0fc783d700(0000) GS:ffff880028200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000178 CR3: 00000006521e0000 CR4: 00000000000406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process gzip (pid: 1908, threadinfo ffff8800a1960000, task ffff88201d1c3500)
Stack:
 ffffffff81faff00 0000000000000000 ffffffff81faff00 0000000025736548
<d> ffff880028203540 ffff880028216680 ffff880028216680 0000000000000000
<d> 0000000000000000 0000000000000003 ffff880028203550 ffffffff8104f2cc
Call Trace:
 <IRQ> 
 [<ffffffff8104f2cc>] check_preempt_curr+0x7c/0x90
 [<ffffffff81060083>] try_to_wake_up+0x213/0x3e0
 [<ffffffff81060262>] default_wake_function+0x12/0x20
 [<ffffffff810920e6>] autoremove_wake_function+0x16/0x40
 [<ffffffff8104e309>] __wake_up_common+0x59/0x90
 [<ffffffff810533e8>] __wake_up+0x48/0x70
 [<ffffffff811168cd>] mempool_free+0x6d/0xa0
 [<ffffffff811b2634>] bio_free+0x64/0x70
 [<ffffffff811b2655>] bio_fs_destructor+0x15/0x20
 [<ffffffff811b13fb>] bio_put+0x2b/0x40
 [<ffffffffa04d830b>] vx_end_io+0x1b/0x50 [vxfs]
 [<ffffffffa04d8359>] vx_end_io_v2+0x19/0x20 [vxfs]
 [<ffffffff811b12ed>] bio_endio+0x1d/0x40
 [<ffffffff81254cdb>] req_bio_endio+0x9b/0xe0
 [<ffffffff81256737>] blk_update_request+0x107/0x490
 [<ffffffff81256ae7>] blk_update_bidi_request+0x27/0xa0
 [<ffffffff81257b8e>] __blk_end_request_all+0x2e/0x60
 [<ffffffffa0843b96>] vxvm_end_request+0x46/0x70 [vxio]
 [<ffffffffa08b411e>] volkiodone+0x12e/0x340 [vxio]
 [<ffffffffa0074063>] ? lpfc_sli_handle_fast_ring_event+0x2a3/0x770 [lpfc]
 [<ffffffff8102a869>] ? native_send_call_func_single_ipi+0x39/0x40
 [<ffffffff810a83b1>] ? generic_exec_single+0xb1/0xc0
 [<ffffffff810305de>] ? physflat_send_IPI_mask+0xe/0x10
 [<ffffffff8102a869>] ? native_send_call_func_single_ipi+0x39/0x40
 [<ffffffff810a83b1>] ? generic_exec_single+0xb1/0xc0
 [<ffffffff812718f9>] ? cpumask_next_and+0x29/0x50
 [<ffffffffa092e61f>] ? vol_free+0xef/0x100 [vxio]
 [<ffffffffa08e48f7>] volsiodone+0x457/0x710 [vxio]
 [<ffffffffa08e875e>] vol_subdisksio_done+0x22e/0x390 [vxio]
 [<ffffffffa08b15c9>] volkcontext_process+0x79/0x1c0 [vxio]
 [<ffffffffa0890b41>] voldiskiodone+0x2e1/0x3e0 [vxio]
 [<ffffffffa00a94b2>] ? lpfc_release_scsi_buf_s3+0x62/0x80 [lpfc]
 [<ffffffff81012bd9>] ? read_tsc+0x9/0x20
 [<ffffffffa0893192>] voldiskiodone_intr+0xd2/0x110 [vxio]
 [<ffffffffa0841766>] voldmp_iodone+0x16/0x20 [vxio]
 [<ffffffff811b12ed>] bio_endio+0x1d/0x40
 [<ffffffffa07685ca>] gendmpiodone+0x1da/0x270 [vxdmp]
 [<ffffffffa0769a12>] dmpiodone+0x52/0xf0 [vxdmp]
 [<ffffffff811b12ed>] bio_endio+0x1d/0x40
 [<ffffffff81254cdb>] req_bio_endio+0x9b/0xe0
 [<ffffffff81256737>] blk_update_request+0x107/0x490
 [<ffffffff81256ae7>] blk_update_bidi_request+0x27/0xa0
 [<ffffffff81257f2f>] blk_end_bidi_request+0x2f/0x80
 [<ffffffff81257fd0>] blk_end_request+0x10/0x20
 [<ffffffff8136c00f>] scsi_io_completion+0xaf/0x6c0
 [<ffffffff81363112>] scsi_finish_command+0xc2/0x130
 [<ffffffff8136c785>] scsi_softirq_done+0x145/0x170
 [<ffffffff8125d605>] blk_done_softirq+0x85/0xa0
 [<ffffffff810db800>] ? handle_IRQ_event+0x60/0x170
 [<ffffffff81073ec1>] __do_softirq+0xc1/0x1e0
 [<ffffffff8100c24c>] call_softirq+0x1c/0x30
 [<ffffffff8100de85>] do_softirq+0x65/0xa0
 [<ffffffff81073ca5>] irq_exit+0x85/0x90
 [<ffffffff8102a905>] smp_call_function_single_interrupt+0x35/0x40
 [<ffffffff8100bdb3>] call_function_single_interrupt+0x13/0x20
 <EOI> 
 [<ffffffff8150011c>] ? _spin_lock+0x1c/0x30
 [<ffffffff8114934e>] page_referenced+0x9e/0x370
 [<ffffffff8112d60d>] shrink_page_list.clone.0+0x17d/0x660
 [<ffffffff8112de0c>] shrink_inactive_list+0x31c/0x7d0
 [<ffffffff8112e727>] ? shrink_active_list+0x287/0x360
 [<ffffffff811287aa>] ? determine_dirtyable_memory+0x1a/0x30
 [<ffffffff81128857>] ? get_dirty_limits+0x27/0x2f0
 [<ffffffff8112eb8f>] shrink_zone+0x38f/0x520
 [<ffffffff8109cd39>] ? ktime_get_ts+0xa9/0xe0
 [<ffffffff8112ee1e>] do_try_to_free_pages+0xfe/0x520
 [<ffffffff8112f42d>] try_to_free_pages+0x9d/0x130
 [<ffffffff81130580>] ? isolate_pages_global+0x0/0x350
 [<ffffffff8112722d>] __alloc_pages_nodemask+0x40d/0x940
 [<ffffffff8115c1da>] alloc_pages_current+0xaa/0x110
 [<ffffffff811144e7>] __page_cache_alloc+0x87/0x90
 [<ffffffff811152ef>] find_or_create_page+0x4f/0xb0
 [<ffffffffa04d06f5>] vx_segmap_getmap+0x125/0xa00 [vxfs]
 [<ffffffff81010bce>] ? __copy_from_user_inatomic+0xe/0x20
 [<ffffffffa0427484>] ? vx_rwsleep_rec_unlock+0x54/0x110 [vxfs]
 [<ffffffffa0504899>] vx_write1_fast+0x349/0xe00 [vxfs]
 [<ffffffffa05060a0>] vx_write_common_fast+0x40/0x150 [vxfs]
 [<ffffffffa05065da>] vx_write_common+0x42a/0x790 [vxfs]
 [<ffffffffa048dc7c>] vx_write+0x1cc/0x290 [vxfs]
 [<ffffffff8117b068>] vfs_write+0xb8/0x1a0
 [<ffffffff810d69e2>] ? audit_syscall_entry+0x272/0x2a0
 [<ffffffff8117ba81>] sys_write+0x51/0x90
 [<ffffffff8100b0f2>] system_call_fastpath+0x16/0x1b
Code: 7f f2 49 8b 85 78 01 00 00 49 39 84 24 78 01 00 00 74 29 66 0f 1f 84 00 00 00 00 00 4d 8b a4 24 70 01 00 00 4d 8b ad 70 01 00 00 <49> 8b 85 78 01 00 00 49 39 84 24 78 01 00 00 75 e0 4d 85 ed 0f 
RIP  [<ffffffff810549df>] check_preempt_wakeup+0x17f/0x260
 RSP <ffff8800282034e0>
CR2: 0000000000000178