kernel BUG at kernel/sched/rt.c:2022!

Issue

• System panicked with the following oops message:

[ 7741.337062] ------------[ cut here ]------------
[ 7741.337063] kernel BUG at kernel/sched/rt.c:2022!
[ 7741.337064] invalid opcode: 0000 [#1] PREEMPT SMP 
[ 7741.337080] Modules linked in: mpt3sas mpt2sas scsi_transport_sas mptctl mptbase dell_rbu rpcsec_gss_krb5 auth_rpcgss oid_registry nfsv4 nfsv3 nfs_acl nfs fscache lockd sunrpc grace netconsole ipv6 nmimgr(O) iTCO_wdt iTCO_vendor_support dcdbas pcspkr onload(O) onload_cplane(PO) sfc_char(O) sfc_resource(O) sfc_affinity(O) sfc(O) mtd mdio ipmi_devintf ipmi_si ipmi_msghandler sg i40e i2c_i801 lpc_ich shpchp igb dca ptp pps_core acpi_power_meter hwmon acpi_pad ext4 jbd2 mbcache sd_mod crct10dif_generic crc_t10dif crct10dif_common megaraid_sas ahci libahci mgag200 ttm drm_kms_helper drm i2c_algo_bit i2c_core dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]
[ 7741.337082] CPU: 4 PID: 47221 Comm: xti.ullk#3 Tainted: P           O   ------------   3.10.0-693.2.2.rt56.588.el6rt.x86_64 #1
[ 7741.337082] Hardware name: Dell Inc. PowerEdge R740/06G98X, BIOS 1.1.7 08/10/2017
[ 7741.337083] task: ffff8807b8348000 ti: ffff88003e23c000 task.ti: ffff88003e23c000
[ 7741.337088] RIP: 0010:[<ffffffff810b6940>]  [<ffffffff810b6940>] set_cpus_allowed_rt+0xf0/0x100
[ 7741.337088] RSP: 0018:ffff88003e23fe08  EFLAGS: 00010046
[ 7741.337089] RAX: 0000000000000000 RBX: ffff8807b8348000 RCX: 0000000000000000
[ 7741.337089] RDX: 0000000000000004 RSI: 0000000000000100 RDI: 0000000000000000
[ 7741.337089] RBP: ffff88003e23fe18 R08: 0000000000000001 R09: 0000000000000000
[ 7741.337090] R10: 0000000000000004 R11: 0000000000000246 R12: ffff88085e297680
[ 7741.337090] R13: ffff8807b8348660 R14: ffff88003e23fec8 R15: ffffffff81a52ca0
[ 7741.337091] FS:  00007fb2537fe700(0000) GS:ffff88085e280000(0000) knlGS:0000000000000000
[ 7741.337091] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7741.337091] CR2: 00007fb2401f1258 CR3: 000000074cb22000 CR4: 00000000003407e0
[ 7741.337092] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 7741.337092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 7741.337092] Stack:
[ 7741.337093]  ffff88003e23fec8 ffff8807b8348000 ffff88003e23fe38 ffffffff810a55cc
[ 7741.337094]  ffff8807b8348000 ffff88085e297680 ffff88003e23fea8 ffffffff810ab143
[ 7741.337094]  ffff88003e23fe78 ffff8807b8348630 ffff8807b8348000 ffff88003e23fee8
[ 7741.337095] Call Trace:
[ 7741.337097]  [<ffffffff810a55cc>] do_set_cpus_allowed+0x3c/0x80
[ 7741.337099]  [<ffffffff810ab143>] set_cpus_allowed_ptr+0x123/0x1d0
[ 7741.337100]  [<ffffffff810ab3a9>] sched_setaffinity+0x1b9/0x1f0
[ 7741.337102]  [<ffffffff810ab44b>] SyS_sched_setaffinity+0x6b/0xa0
[ 7741.337104]  [<ffffffff816512a8>] tracesys+0xdd/0xe2
[ 7741.337112] Code: 07 00 00 74 0b 48 89 de 4c 89 e7 e8 3b fb ff ff 49 8b 84 24 68 07 00 00 48 85 c0 74 0e 48 83 e8 01 49 89 84 24 68 07 00 00 eb b4 <0f> 0b eb fe 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 48 
[ 7741.337113] RIP  [<ffffffff810b6940>] set_cpus_allowed_rt+0xf0/0x100
[ 7741.337113]  RSP <ffff88003e23fe08>
[ 7741.629397] ---[ end trace 0000000000000002 ]---