FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp edac-for-3.21
commit 7d4e4cb735b7f746c27571b6dd43ba5572a1eef4 ("EDAC: i7core: Use static attribute groups for sysfs entries")


+----------------------------------------------------------------+------------+------------+
|                                                                | d23d3d1838 | 7d4e4cb735 |
+----------------------------------------------------------------+------------+------------+
| boot_successes                                                 | 30         | 17         |
| early-boot-hang                                                | 1          |            |
| boot_failures                                                  | 0          | 12         |
| general_protection_fault                                       | 0          | 12         |
| RIP:strlen                                                     | 0          | 6          |
| Kernel_panic-not_syncing:Fatal_exception                       | 0          | 6          |
| WARNING:at_arch/x86/kernel/smp.c:#native_smp_send_reschedule() | 0          | 1          |
| backtrace:__pci_register_driver                                | 0          | 6          |
| backtrace:i7core_init                                          | 0          | 6          |
| backtrace:load_module                                          | 0          | 6          |
| backtrace:SyS_finit_module                                     | 0          | 6          |
+----------------------------------------------------------------+------------+------------+


[   18.736230] ppdev: user-space parallel port driver
[   18.792108] Fusion MPT base driver 3.04.20
[   18.796347] Copyright (c) 1999-2008 LSI Corporation
[   18.806729] general protection fault: 0000 [#1] SMP 
[   18.807202] Modules linked in: i7core_edac(+) glue_helper ablk_helper mptbase scsi_transport_sas ppdev snd_timer snd serio_raw soundcore cryptd pcspkr i2c_i801 ipmi_si edac_core microcode floppy(+) shpchp parport_pc parport ipmi_msghandler acpi_cpufreq
[   18.807202] CPU: 21 PID: 320 Comm: systemd-udevd Not tainted 3.19.0-wl-ath-g2cba732 #1
[   18.807202] Hardware name: Supermicro X8DTN/X8DTN, BIOS 4.6.3 01/06/2010
[   18.807202] task: ffff88022c5f57f0 ti: ffff88022ca70000 task.ti: ffff88022ca70000
[   18.807202] RIP: 0010:[<ffffffff81419640>]  [<ffffffff81419640>] strlen+0x0/0x30
[   18.807202] RSP: 0018:ffff88022ca73850  EFLAGS: 00010246
[   18.807202] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100
[   18.807202] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 655f7463656a6e69
[   18.807202] RBP: ffff88022ca73868 R08: 0000000000019060 R09: ffffffff81412afd
[   18.807202] R10: ffff88043fd39060 R11: ffffea0002d76200 R12: 655f7463656a6e69
[   18.807202] R13: ffff88043c0d19d8 R14: ffffffff8190ab40 R15: ffffffffa0207160
[   18.807202] FS:  00007f17c2009880(0000) GS:ffff88043fd20000(0000) knlGS:0000000000000000
[   18.807202] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.807202] CR2: 00007f5ceddebdc0 CR3: 000000022ca5b000 CR4: 00000000000007e0
[   18.807202] Stack:
[   18.807202]  ffffffff81263057 00000000ffffffea ffff88043cf9f168 ffff88022ca738a8
[   18.807202]  ffffffff812645ab ffffffff8190ab40 ffff88043c0d19d8 ffff88022ca738a8
[   18.807202]  ffff88043cf9f168 0000000000001000 ffffffffa0206518 ffff88022ca738d8
[   18.807202] Call Trace:
[   18.807202]  [<ffffffff81263057>] ? kernfs_name_hash+0x17/0xa0
[   18.807202]  [<ffffffff812645ab>] kernfs_add_one+0x8b/0x150
[   18.807202]  [<ffffffff8126604c>] __kernfs_create_file+0x7c/0xa0
[   18.807202]  [<ffffffff812668e7>] sysfs_add_file_mode_ns+0xa7/0x1c0
[   18.807202]  [<ffffffff81267589>] internal_create_group+0xd9/0x280
[   18.807202]  [<ffffffff81267869>] sysfs_create_groups+0x49/0xa0
[   18.807202]  [<ffffffff8155189f>] device_add+0x3cf/0x670
[   18.807202]  [<ffffffffa00ad0e9>] edac_create_sysfs_mci_device+0xb9/0x370 [edac_core]
[   18.807202]  [<ffffffffa00ab1a1>] edac_mc_add_mc_with_groups+0x171/0x360 [edac_core]
[   18.807202]  [<ffffffffa02050b8>] i7core_probe+0x5e8/0xe87 [i7core_edac]
[   18.807202]  [<ffffffff81099846>] ? __might_sleep+0x56/0xc0
[   18.807202]  [<ffffffff8144d365>] local_pci_probe+0x45/0xa0
[   18.807202]  [<ffffffff8144e6d5>] ? pci_match_device+0xe5/0x110
[   18.807202]  [<ffffffff8144e811>] pci_device_probe+0xd1/0x120
[   18.807202]  [<ffffffff81554a30>] driver_probe_device+0x90/0x3e0
[   18.807202]  [<ffffffff81554e5b>] __driver_attach+0x9b/0xa0
[   18.807202]  [<ffffffff81554dc0>] ? __device_attach+0x40/0x40
[   18.807202]  [<ffffffff8155280b>] bus_for_each_dev+0x6b/0xb0
[   18.807202]  [<ffffffff815544ae>] driver_attach+0x1e/0x20
[   18.807202]  [<ffffffff81554070>] bus_add_driver+0x180/0x250
[   18.807202]  [<ffffffffa00e2000>] ? 0xffffffffa00e2000
[   18.807202]  [<ffffffff81555664>] driver_register+0x64/0xf0
[   18.807202]  [<ffffffff8144cbac>] __pci_register_driver+0x4c/0x50
[   18.807202]  [<ffffffffa00e203f>] i7core_init+0x3f/0x1000 [i7core_edac]
[   18.807202]  [<ffffffffa00e2000>] ? 0xffffffffa00e2000
[   18.807202]  [<ffffffff81002130>] do_one_initcall+0xc0/0x1f0
[   18.807202]  [<ffffffff811ca46c>] ? kmem_cache_alloc_trace+0x1dc/0x250
[   18.807202]  [<ffffffff810fc372>] ? load_module+0x14a2/0x1ab0
[   18.807202]  [<ffffffff810fc3aa>] load_module+0x14da/0x1ab0
[   18.807202]  [<ffffffff810f7d60>] ? store_uevent+0x40/0x40
[   18.807202]  [<ffffffff810fcb26>] SyS_finit_module+0x86/0xb0
[   18.807202]  [<ffffffff818ba8a9>] system_call_fastpath+0x12/0x17
[   18.807202] Code: 89 f8 48 89 e5 f6 82 40 5c 93 81 20 74 15 0f 1f 44 00 00 48 83 c0 01 0f b6 10 f6 82 40 5c 93 81 20 75 f0 5d c3 66 0f 1f 44 00 00 <80> 3f 00 55 48 89 e5 74 15 48 89 f8 0f 1f 40 00 48 83 c0 01 80 
[   18.807202] RIP  [<ffffffff81419640>] strlen+0x0/0x30
[   18.807202]  RSP <ffff88022ca73850>
[   19.182483] ---[ end trace 403864ba2d7d3d97 ]---
[   19.187229] Kernel panic - not syncing: Fatal exception



Thanks,
Huang, Ying