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Ingo Molnar 1ff5683043 [PATCH] lockdep: fix static keys in module-allocated percpu areas 
lockdep got confused by certain locks in modules:

 INFO: trying to register non-static key.
 the code is fine but needs lockdep annotation.
 turning off the locking correctness validator.

 Call Trace:
  [<ffffffff8026f40d>] dump_trace+0xaa/0x3f2
  [<ffffffff8026f78f>] show_trace+0x3a/0x60
  [<ffffffff8026f9d1>] dump_stack+0x15/0x17
  [<ffffffff802abfe8>] __lock_acquire+0x724/0x9bb
  [<ffffffff802ac52b>] lock_acquire+0x4d/0x67
  [<ffffffff80267139>] rt_spin_lock+0x3d/0x41
  [<ffffffff8839ed3f>] :ip_conntrack:__ip_ct_refresh_acct+0x131/0x174
  [<ffffffff883a1334>] :ip_conntrack:udp_packet+0xbf/0xcf
  [<ffffffff8839f9af>] :ip_conntrack:ip_conntrack_in+0x394/0x4a7
  [<ffffffff8023551f>] nf_iterate+0x41/0x7f
  [<ffffffff8025946a>] nf_hook_slow+0x64/0xd5
  [<ffffffff802369a2>] ip_rcv+0x24e/0x506
  [...]

Steven Rostedt found the bug: static_obj() check did not take
PERCPU_ENOUGH_ROOM into account, so in-module DEFINE_PER_CPU-area locks
were triggering this message.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
 		2006-11-17 11:10:37 -08:00
..
irq [PATCH] some irq_chip variables point to NULL 2006-11-16 11:43:37 -08:00
power [PATCH] swsusp: debugging 2006-11-03 12:27:58 -08:00
time [PATCH] time_adjust cleared before use 2006-10-28 11:30:55 -07:00
.gitignore
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Kconfig.hz
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Kconfig.preempt
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Makefile
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acct.c
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audit.c
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audit.h
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auditfilter.c
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auditsc.c
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capability.c
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compat.c [PATCH] Create compat_sys_migrate_pages 2006-11-03 12:27:59 -08:00
configs.c
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cpu.c [PATCH] Fix the spurious unlock_cpu_hotplug false warnings 2006-11-06 01:46:22 -08:00
cpuset.c [PATCH] cpuset ANSI prototype 2006-10-10 15:37:23 -07:00
delayacct.c [PATCH] lockdep: fix delayacct locking bug 2006-11-06 01:46:23 -08:00
dma.c
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exec_domain.c
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exit.c [PATCH] taskstats_tgid_free: fix usage 2006-10-28 11:30:54 -07:00
extable.c
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fork.c Revert "[PATCH] fix Data Acess error in dup_fd" 2006-11-14 15:20:51 -08:00
futex.c [PATCH] schedule removal of FUTEX_FD 2006-11-03 12:27:58 -08:00
futex_compat.c [PATCH] __user annotations: futex 2006-10-10 15:37:22 -07:00
hrtimer.c
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itimer.c
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kallsyms.c
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kexec.c
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kfifo.c
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kmod.c
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kprobes.c
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ksysfs.c
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kthread.c
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latency.c
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lockdep.c [PATCH] lockdep: fix static keys in module-allocated percpu areas 2006-11-17 11:10:37 -08:00
lockdep_internals.h
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lockdep_proc.c
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module.c [PATCH] ndiswrapper: don't set the module->taints flags 2006-10-30 12:08:40 -08:00
mutex-debug.c Lockdep: add lockdep_set_class_and_subclass() and lockdep_set_subclass() 2006-10-11 01:45:14 -04:00
mutex-debug.h
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mutex.c
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mutex.h
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nsproxy.c [PATCH] kernel/nsproxy.c: use kmemdup() 2006-10-20 10:26:44 -07:00
panic.c
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params.c
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pid.c
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posix-cpu-timers.c [PATCH] posix-cpu-timers: prevent signal delivery starvation 2006-10-17 08:18:43 -07:00
posix-timers.c
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printk.c [PATCH] Add printk_timed_ratelimit() 2006-11-03 12:27:58 -08:00
profile.c [PATCH] bitmap: parse input from kernel and user buffers 2006-10-11 11:14:22 -07:00
ptrace.c
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rcupdate.c
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rcutorture.c
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relay.c [PATCH] make kernel/relay.c __user-clean 2006-10-10 15:37:22 -07:00
resource.c
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rtmutex-debug.c
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rtmutex-debug.h
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rtmutex-tester.c
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rtmutex.c
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rtmutex.h
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rtmutex_common.h
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rwsem.c
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sched.c [PATCH] readjust comments of task_timeslice for kernel doc 2006-10-20 10:26:37 -07:00
seccomp.c
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signal.c Make sure "user->sigpending" count is in sync 2006-11-04 13:03:00 -08:00
softirq.c
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softlockup.c
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spinlock.c
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srcu.c
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stacktrace.c
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stop_machine.c
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sys.c
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sys_ni.c [PATCH] Create compat_sys_migrate_pages 2006-11-03 12:27:59 -08:00
sysctl.c [PATCH] sysctl: allow a zero ctl_name in the middle of a sysctl table 2006-11-06 01:46:23 -08:00
taskstats.c [PATCH] taskstats: fix sub-threads accounting 2006-10-31 08:07:00 -08:00
time.c
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timer.c
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tsacct.c [PATCH] xacct_add_tsk: fix pure theoretical ->mm use-after-free 2006-10-30 12:08:41 -08:00
uid16.c
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unwind.c [PATCH] x86-64: Speed up dwarf2 unwinder 2006-10-21 18:37:01 +02:00
user.c Fix unlikely (but possible) race condition on task->user access 2006-11-04 10:06:02 -08:00
utsname.c
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wait.c
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workqueue.c [PATCH] workqueue: update kerneldoc 2006-10-28 11:30:55 -07:00