Message-ID: <20131007003256.GA26004@localhost>
Date:	Mon, 7 Oct 2013 08:32:56 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Russell King <rmk+kernel@....linux.org.uk>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: [timer] INFO: trying to register non-static key.

Russell,

Here is one more bug exposed by your patch. :)

commit c817a67ecba7c3c2aaa104796d78f160af60920d
Author: Russell King <rmk+kernel@....linux.org.uk>
Date:   Thu Jun 27 15:06:14 2013 +0100

    kobject: delayed kobject release: help find buggy drivers

[    4.573351] INFO: trying to register non-static key.
[    4.573767] the code is fine but needs lockdep annotation.
[    4.574208] turning off the locking correctness validator.
[    4.574652] CPU: 1 PID: 345 Comm: trinity Not tainted 3.12.0-rc1 #76
[    4.575155]  00000000 00000000 8d47fc4c 813a8643 8da4bc90 8d47fc88 81090483 814dc094
[    4.575862]  8d47fc80 8106a187 00000006 8da4bc90 0000002a 00000002 8d47fcac 00000000
[    4.576581]  8d47fcd4 8da4bc90 8d47fcd4 00000000 8d47fcb4 81091242 00000000 00000000
[    4.576676] Call Trace:
[    4.576676]  [<813a8643>] dump_stack+0x4b/0x66
[    4.576676]  [<81090483>] __lock_acquire.isra.21+0x183/0x8e0
[    4.576676]  [<8106a187>] ? sched_clock_cpu+0x117/0x130
[    4.576676]  [<81091242>] lock_acquire+0x72/0x90
[    4.576676]  [<81049380>] ? process_timeout+0x10/0x10
[    4.576676]  [<810493e9>] call_timer_fn+0x69/0xe0
[    4.576676]  [<81049380>] ? process_timeout+0x10/0x10
[    4.576676]  [<810495b1>] run_timer_softirq+0x151/0x180
[    4.576676]  [<810437e5>] __do_softirq+0xa5/0x160
[    4.576676]  [<8106a187>] ? sched_clock_cpu+0x117/0x130
[    4.576676]  [<8108d754>] ? tick_nohz_handler+0xd4/0xe0
[    4.576676]  [<810439b7>] irq_exit+0x47/0xa0
[    4.576676]  [<810279b5>] smp_apic_timer_interrupt+0x35/0x50
[    4.576676]  [<813af0f1>] apic_timer_interrupt+0x31/0x38
[    4.576676]  [<8110007b>] ? shrink_dentry_list+0x15b/0x420
[    4.576676]  [<8118da90>] ? do_raw_spin_lock+0x120/0x120
[    4.576676]  [<813adfe9>] ? _raw_spin_lock+0x49/0x70
[    4.576676]  [<81101154>] ? __d_lookup+0x94/0x1a0
[    4.576676]  [<81101154>] __d_lookup+0x94/0x1a0
[    4.576676]  [<811010c0>] ? __d_lookup_rcu+0x160/0x160
[    4.576676]  [<810f652d>] ? inode_permission+0x3d/0x50
[    4.576676]  [<810f5da0>] lookup_fast+0x180/0x250
[    4.576676]  [<810f75d3>] path_lookupat+0x573/0x650
[    4.576676]  [<810e4a19>] ? kmem_cache_alloc+0x39/0x130
[    4.576676]  [<8106a187>] ? sched_clock_cpu+0x117/0x130
[    4.576676]  [<810f63a0>] ? getname_flags+0x20/0xf0
[    4.576676]  [<810f76d1>] filename_lookup.isra.47+0x21/0x60
[    4.576676]  [<810f9fd9>] user_path_at_empty+0x49/0x70
[    4.576676]  [<810f1192>] ? cp_new_stat64+0xf2/0x110
[    4.576676]  [<810fa01a>] user_path_at+0x1a/0x20
[    4.576676]  [<810f0d84>] vfs_fstatat+0x44/0x90
[    4.576676]  [<810f1591>] SyS_lstat64+0x21/0x40
[    4.576676]  [<813aedec>] ? syscall_exit+0x8/0x21
[    4.576676]  [<813aede0>] syscall_call+0x7/0xb
[    4.576676]  [<813a0000>] ? vsock_addr_init+0x20/0x20
[    4.591703] kernel tried to execute NX-protected page - exploit attempt? (uid: 65534)
[    4.592335] BUG: unable to handle kernel paging request at 8da3b054

git bisect start 272b98c6455f00884f0350f775c5342358ebb73f v3.11 --
git bisect  bad 57d730924d5cc2c3e280af16a9306587c3a511db  # 18:27     23-  Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect  bad a9238741987386bb549d61572973c7e62b2a4145  # 18:32     21-  Merge tag 'pci-v3.12-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
git bisect good 91121c103ae93ef117e58712786864270d7f488e  # 19:11   5000+  staging: dwc2: make dwc2_core_params documentation more complete
git bisect good 1d1fdd95df681f0c065d90ffaafa215a0e8825e2  # 20:37   5000+  Merge tag 'char-misc-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
git bisect  bad d472d9d98b463dd7a04f2bcdeafe4261686ce6ab  # 20:43    171-  lockref: Relax in cmpxchg loop
git bisect good e438ac9ade074932383bb00d51b8ded8a0ee164b  # 00:05   5000+  OMAP: serial: Remove incorrect disabling of IER interrupt
git bisect  bad 36c27a655a531f16b5567066600f0ea7fcb973b4  # 00:15    793-  w1: add attribute groups to struct w1_family_ops
git bisect  bad 13e2237f36874a7abef44b98969f399127b1917d  # 00:19     63-  v4l2: convert class code to use dev_groups
git bisect  bad 3499116b915e260b275c167a471e0e05bbe3f1d6  # 00:25    134-  PTP: convert class code to use dev_groups
git bisect  bad 58b267d3e3f3ce87c3e559e4c330c8c03e905f5e  # 00:34    574-  dma: convert dma_devclass to use dev_groups
git bisect good 899826f16a034f1ab6d23cd5b60cd113eaefad19  # 02:10   5000+  enclosure: convert class code to use dev_groups
git bisect good ac3785d5c15922c8a4c6b9e050a5bc59895a6b9b  # 03:03   5000+  c2port: convert class code to use bin_attrs in groups
git bisect  bad c817a67ecba7c3c2aaa104796d78f160af60920d  # 03:09    118-  kobject: delayed kobject release: help find buggy drivers
git bisect good 7c42721fe0c58a848849b43ff558cf2fb86aa35a  # 09:40   5000+  char: tile-srom: fix build error
git bisect good 7c42721fe0c58a848849b43ff558cf2fb86aa35a  # 19:35  10000+  char: tile-srom: fix build error
git bisect good 7c42721fe0c58a848849b43ff558cf2fb86aa35a  # 00:00  10000+  char: tile-srom: fix build error
git bisect  bad e62063d69911886a5a92c719d262a2a87e1e5b60  # 00:09    157-  Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
git bisect  bad a0cf1abc25ac197dd97b857c0f6341066a8cb1cf  # 00:16     63-  Add linux-next specific files for 20130927

Thanks,
Fengguang

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