Greetings,

I got the below dmesg and the first bad commit is

commit 4debfe409b6e550032bfef9733e9f6f7c5613617
Author: Alessandro Rubini <rubini@gnudd.com>
Date:   Tue Jun 18 23:48:07 2013 +0200

    FMC: add a char-device mezzanine driver
    
    This driver exports the memory area associated with the mezzanine card
    as a misc device, so users can access registers.
    
    Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
    Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch>
    Acked-by: Emilio G. Cota <cota@braap.org>
    Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

[    8.099210] fmc_write_eeprom fake-design-for-testing-f001: fmc_write_eeprom: no busid passed, refusing all cards
[    8.101676] fmc fake-design-for-testing-f001: Driver has no ID: matches all
[    8.103293] BUG: scheduling while atomic: swapper/1/0x10000002
[    8.104703] CPU: 0 PID: 1 Comm: swapper Not tainted 3.10.0-wl-06036-gaf15f8d #1
[    8.106580] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    8.107966]  0000000000000000 ffff88000dc5bb00 ffffffff81b7bf27 ffff88000dc5bb10
[    8.110313]  ffffffff81b77ffd ffff88000dc5bb70 ffffffff81b848be ffffffff810dcf60
[    8.112635]  ffff88000dc5bfd8 ffff88000dc5bfd8 ffff88000dc5bfd8 ffff88000dc5bfd8
[    8.114976] Call Trace:
[    8.115743]  [<ffffffff81b7bf27>] dump_stack+0x19/0x1b
[    8.117044]  [<ffffffff81b77ffd>] __schedule_bug+0x42/0x50
[    8.118369]  [<ffffffff81b848be>] __schedule+0x50e/0x520
[    8.119657]  [<ffffffff810dcf60>] ? __enqueue_entity+0x70/0x80
[    8.121115]  [<ffffffff810d9710>] __cond_resched+0x20/0x30
[    8.122434]  [<ffffffff81b84a63>] _cond_resched+0x33/0x40
[    8.123749]  [<ffffffff81b84d5a>] wait_for_completion+0x2a/0x140
[    8.125215]  [<ffffffff815c3a54>] devtmpfs_create_node+0xf4/0x130
[    8.126664]  [<ffffffff815bbb8e>] device_add+0x23e/0x6f0
[    8.127969]  [<ffffffff815bca40>] device_create_vargs+0xd0/0x100
[    8.129430]  [<ffffffff815bca9f>] device_create+0x2f/0x40
[    8.130750]  [<ffffffff81b83980>] ? mutex_lock+0x20/0x30
[    8.132064]  [<ffffffff81587a56>] misc_register+0xc6/0x120
[    8.133397]  [<ffffffff8192c7a8>] fc_probe+0x98/0x140
[    8.134643]  [<ffffffff8192a652>] fmc_probe+0x12/0x20
[    8.135878]  [<ffffffff815bf4d2>] really_probe+0x52/0x1f0
[    8.137225]  [<ffffffff815bf771>] __driver_attach+0x91/0xa0
[    8.138564]  [<ffffffff815bf6e0>] ? __device_attach+0x50/0x50
[    8.139952]  [<ffffffff815bd9d3>] bus_for_each_dev+0x63/0xa0
[    8.141382]  [<ffffffff815bf409>] driver_attach+0x19/0x20
[    8.142703]  [<ffffffff815be418>] bus_add_driver+0x1c8/0x260
[    8.144091]  [<ffffffff8192c6d0>] ? fc_read+0xb0/0xb0
[    8.145336]  [<ffffffff815bff1f>] driver_register+0x6f/0x150
[    8.146700]  [<ffffffff8192c6d0>] ? fc_read+0xb0/0xb0
[    8.147960]  [<ffffffff8192a7f0>] fmc_driver_register+0x30/0x40
[    8.149415]  [<ffffffff8192c6e0>] fc_init+0x10/0x20
[    8.150635]  [<ffffffff82373feb>] do_one_initcall+0x79/0x117
[    8.152000]  [<ffffffff82374184>] kernel_init_freeable+0xfb/0x17c
[    8.153476]  [<ffffffff82373881>] ? do_early_param+0x88/0x88
[    8.154831]  [<ffffffff81b71c90>] ? rest_init+0x90/0x90
[    8.156144]  [<ffffffff81b71c99>] kernel_init+0x9/0x180
[    8.157424]  [<ffffffff81b86b7a>] ret_from_fork+0x7a/0xb0
[    8.158745]  [<ffffffff81b71c90>] ? rest_init+0x90/0x90
[    8.160103] fmc_chardev fake-design-for-testing-f001: Created misc device "fake-design-for-testing-f001"
[    8.162448] Audio Excel DSP 16 init driver Copyright (C) Riccardo Facchetti 1995-98

git bisect start af15f8de4f3a7b28e3a2c2064ad74106767516ca 8bb495e3f02401ee6f76d1b1d77f3ac9f079e376 --
git bisect good 42d40811bf7f97b6b7986bb117f3310243d91ffe  # 11:00     60+  Merge remote-tracking branch 'josef-btrfs/master' into devel-cairo-x86_64-201307012240
git bisect  bad 687e28600c4eb7737c036daa5c787227b3d1bb01  # 11:05      0-  Merge remote-tracking branch 'scsi/for-next' into devel-cairo-x86_64-201307012240
git bisect good 99f9e01bf87d4b8da68fd7795b0f05ab767b982e  # 11:11     60+  Merge remote-tracking branch 'm68k/m68k-queue' into devel-cairo-x86_64-201307012240
git bisect good 80d162c66bc6159efa67406d34757857628c5c02  # 13:53     60+  Merge remote-tracking branch 'pinchartl-fbdev/boards/ethernet' into devel-cairo-x86_64-201307012240
git bisect  bad 02b12c58897d1b25ad52ef5c81b29409ae5e9169  # 13:59      0-  Merge remote-tracking branch 'gregkh-char-misc/char-misc-next' into postmerge-base
git bisect  bad 34cb27528398738bea94852b99ef8fb05944ec41  # 14:03      0-  UIO: Fix concurrency issue
git bisect good 4cd5773a2ae6facdde3f563087a4cc50f00d9530  # 14:08     60+  net: core: move mac_pton() to lib/net_utils.c
git bisect good e31c51e4a1d11ed0b61557ca9da9cf18c8855531  # 14:15     60+  vme: tsi148: Only store VME bus errors if they will be checked
git bisect good 056d83f3c30c398f14eb879f1d1707e3a7808f4a  # 14:21     60+  FMC: add a software mezzanine driver
git bisect  bad c2955da0e101c3432ae21945e5d77786adf1f094  # 14:25      0-  fmc: avoid readl/writel namespace conflict
git bisect  bad 05c3e0bb5629b897b0459e4bfb1b93d729033b99  # 14:29      0-  UIO: allow binding uio_pdrv_genirq.c to devices using command line option
git bisect  bad 4debfe409b6e550032bfef9733e9f6f7c5613617  # 14:34      0-  FMC: add a char-device mezzanine driver
git bisect good 6007b1bd0f752a5c022f7944c65fb96c39d6db3d  # 14:40     60+  FMC: add a driver to write mezzanine EEPROM
git bisect good 6007b1bd0f752a5c022f7944c65fb96c39d6db3d  # 14:42    180+  FMC: add a driver to write mezzanine EEPROM
git bisect  bad af15f8de4f3a7b28e3a2c2064ad74106767516ca  # 14:42      0-  Merge remote-tracking branch 'xlnx/zynq/clk' into devel-cairo-x86_64-201307012240
git bisect  bad 0b0585c3e192967cb2ef0ac0816eb8a8c8d99840  # 14:47      0-  Merge branch 'for-3.11-cpuset' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
git bisect  bad e8e1f4c8a798998aad598698b3dd44a95ab80573  # 14:58      0-  Add linux-next specific files for 20130702

Thanks,
Fengguang