Kernel panic in __sanitize_i387_state() when a multi-threaded process using FPU aborted.

Issue

• Kernel crashed with following panic message when a multi-threaded process using FPU aborted:

kernel BUG at arch/x86/kernel/xsave.c:45!
invalid opcode: 0000 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:04:00.7/device
CPU 27 
Modules linked in: nfs lockd fscache nfs_acl netconsole configfs autofs4 rpcsec_gss_krb5 auth_rpcgss sunrpc cpufreq_ondemand freq_table pcc_cpufreq bonding 8021q garp stp llc ipv6 power_meter hpilo hpwdt sg bnx2x libcrc32c mdio microcode serio_raw iTCO_wdt iTCO_vendor_support shpchp ext4 mbcache jbd2 sd_mod crc_t10dif hpsa video output dm_mirror dm_region_hash dm_log dm_mod [last unloaded: scsi_wait_scan]

Pid: 3964527, comm: invokeGCC34 Not tainted 2.6.32-358.14.1.el6.x86_64 #1 HP ProLiant BL460c Gen8
RIP: 0010:[<ffffffff81015bf9>]  [<ffffffff81015bf9>] __sanitize_i387_state+0x129/0x130
RSP: 0018:ffff881fa5c0da88  EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff882007b34dc0 RCX: 0000000000000200
RDX: ffff8815f5e14040 RSI: ffffffff81bfd138 RDI: ffff881fc9a89500
RBP: ffff881fa5c0daa8 R08: ffff8820125ec400 R09: 0000000000000000
R10: 0000000000000200 R11: 0000000000000000 R12: ffff8820125ec400
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000200
FS:  00007fbada07e700(0000) GS:ffff8800999e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 00007fbb6c61a325 CR3: 0000001f50efb000 CR4: 00000000001407e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process invokeGCC34 (pid: 3964527, threadinfo ffff881fa5c0c000, task ffff8815f5e14040)
Stack:
 0000000000000010 ffff881fc9a89500 ffff8820125ec400 0000000000000000
<d> ffff881fa5c0daf8 ffffffff81015958 0000000000000246 0000000000000000
<d> ffffffff81017f7c ffffffff81bfd138 0000000000000001 ffff8820125efc00
Call Trace:
 [<ffffffff81015958>] xfpregs_get+0x88/0xc0
 [<ffffffff81017f7c>] ? genregs_get+0x3c/0xa0
 [<ffffffff811db19c>] elf_core_dump+0x52c/0xfe0
 [<ffffffff81055ad3>] ? __wake_up+0x53/0x70
 [<ffffffff8108f7ab>] ? call_usermodehelper_exec+0xab/0x120
 [<ffffffff81187a84>] do_coredump+0x814/0xc00
 [<ffffffff8108504d>] ? __sigqueue_free+0x3d/0x50
 [<ffffffff81088e4d>] get_signal_to_deliver+0x1ed/0x460
 [<ffffffff81086dcb>] ? __send_signal+0x19b/0x390
 [<ffffffff8100a265>] do_signal+0x75/0x800
 [<ffffffff810870b0>] ? do_send_sig_info+0x70/0x90
 [<ffffffff81181192>] ? vfs_write+0x132/0x1a0
 [<ffffffff810863d1>] ? sigprocmask+0x71/0x110
 [<ffffffff810864fa>] ? sys_rt_sigprocmask+0x8a/0x100
 [<ffffffff81181192>] ? vfs_write+0x132/0x1a0
 [<ffffffff8100aa80>] do_notify_resume+0x90/0xc0
 [<ffffffff8100b341>] int_signal+0x12/0x17
Code: 10 00 00 00 00 f3 48 ab 4c 89 e0 83 e0 02 0f 85 4c ff ff ff 48 8d 93 a0 00 00 00 b9 20 00 00 00 48 89 d7 f3 48 ab e9 35 ff ff ff <0f> 0b eb fe 0f 1f 00 55 48 89 e5 48 83 ec 20 48 89 5d e8 4c 89 
RIP  [<ffffffff81015bf9>] __sanitize_i387_state+0x129/0x130
 RSP <ffff881fa5c0da88>