Peter Zijlstra 000f4a9e71 lockdep: annotate do_debug() trap handler ... Ensure the hardirq state is consistent before using locks. Use the rare trace_hardirqs_fixup() because the trap can happen in any context. resolves this rare lockdep warning: WARNING: at kernel/lockdep.c:2658 check_flags() [<c013571e>] check_flags+0x90/0x140 [<c0138a69>] lock_release+0x4b/0x1d0 [<c0507fea>] notifier_call_chain+0x2a/0x47 [<c050806b>] __atomic_notifier_call_chain+0x64/0x6d [<c0508007>] __atomic_notifier_call_chain+0x0/0x6d [<c050808b>] atomic_notifier_call_chain+0x17/0x1a [<c0131802>] notify_die+0x30/0x34 [<c0506b09>] do_debug+0x3e/0xd4 [<c050658f>] debug_stack_correct+0x27/0x2c [<c04be389>] tcp_rcv_established+0x1/0x620 [<c04c38c2>] tcp_v4_do_rcv+0x2b/0x313 [<c04c56b6>] tcp_v4_rcv+0x467/0x85d [<c0505ff2>] _spin_lock_nested+0x27/0x32 [<c04c5a4d>] tcp_v4_rcv+0x7fe/0x85d [<c04c560e>] tcp_v4_rcv+0x3bf/0x85d [<c04adbb5>] ip_local_deliver_finish+0x11b/0x1b0 [<c04adac8>] ip_local_deliver_finish+0x2e/0x1b0 [<c04ada7b>] ip_rcv_finish+0x27b/0x29a [<c04961e5>] netif_receive_skb+0xfb/0x2a6 [<c04add0f>] ip_rcv+0x0/0x1fb [<c0496354>] netif_receive_skb+0x26a/0x2a6 [<c04961e5>] netif_receive_skb+0xfb/0x2a6 [<c049872e>] process_backlog+0x7f/0xc6 [<c04983ba>] net_rx_action+0xb9/0x1ac [<c0498348>] net_rx_action+0x47/0x1ac [<c01376cb>] trace_hardirqs_on+0x118/0x16b [<c01225e2>] __do_softirq+0x49/0xa2 [<c010595f>] do_softirq+0x60/0xdd [<c0506300>] _spin_unlock_irq+0x20/0x2c [<c0103e4f>] restore_nocheck+0x12/0x15 [<c01440e1>] handle_fasteoi_irq+0x0/0x9b [<c0105a70>] do_IRQ+0x94/0xaa [<c0506300>] _spin_unlock_irq+0x20/0x2c [<c0104832>] common_interrupt+0x2e/0x34 [<c0114703>] native_safe_halt+0x2/0x3 [<c0102c01>] default_idle+0x44/0x65 [<c010257f>] cpu_idle+0x42/0x50 [<c076ea09>] start_kernel+0x26b/0x270 [<c076e317>] unknown_bootoption+0x0/0x196 ======================= irq event stamp: 559190 hardirqs last enabled at (559190): [<c0507316>] kprobe_exceptions_notify+0x299/0x305 hardirqs last disabled at (559189): [<c05067bf>] do_int3+0x1d/0x95 softirqs last enabled at (559172): [<c010595f>] do_softirq+0x60/0xdd softirqs last disabled at (559181): [<c010595f>] do_softirq+0x60/0xdd Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2007-11-26 20:42:19 +01:00
..
boot	x86: do not use $(ARCH) when not needed	2007-11-12 21:02:20 +01:00
configs	x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMU	2007-10-30 00:22:22 +01:00
crypto	x86: merge arch/x86/crypto Makefiles	2007-10-23 22:37:23 +02:00
ia32	x86 - 32-bit ptrace emulation mishandles 6th arg	2007-11-10 04:30:36 +01:00
kernel	lockdep: annotate do_debug() trap handler	2007-11-26 20:42:19 +01:00
lguest	lguest: tidy up documentation	2007-11-05 21:55:57 +11:00
lib	x86: disable preemption in delay_tsc()	2007-11-14 18:45:44 -08:00
mach-default	spelling fixes: arch/i386/	2007-10-20 01:13:56 +02:00
mach-es7000	i386: es7000 minor cleanups	2007-10-17 20:16:15 +02:00
mach-generic	spelling fixes: arch/i386/	2007-10-20 01:13:56 +02:00
mach-visws	[x86] remove uses of magic macros for boot_params access	2007-10-16 17:38:31 -07:00
mach-voyager	x86: fix smp init sections	2007-11-17 16:27:00 +01:00
math-emu	kbuild: fix up CFLAGS usage	2007-10-14 21:49:42 +02:00
mm	Merge branch 'v2.6.24-rc1-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep	2007-11-03 12:42:52 -07:00
oprofile	x86: add instrumentation menu	2007-10-23 22:37:22 +02:00
pci	x86: check boundary in count setup resource	2007-11-17 16:27:01 +01:00
power	i386: move power	2007-10-11 11:16:34 +02:00
vdso	x86: ignore the sys_getcpu() tcache parameter	2007-11-17 16:27:00 +01:00
video	i386: move video	2007-10-11 11:16:56 +02:00
xen	[SPARC, XEN, NET/CXGB3] use irq_handler_t where appropriate	2007-10-23 19:53:17 -04:00
Kconfig	x86: simplify "make ARCH=x86" and fix kconfig all.config	2007-11-17 17:21:54 +01:00
Kconfig.cpu	x86: arch/x86/Kconfig.cpu unification	2007-11-12 21:02:19 +01:00
Kconfig.debug	remove the dead X86_REMOTE_DEBUG option	2007-10-30 00:22:22 +01:00
Makefile	x86: do not use $(ARCH) when not needed	2007-11-12 21:02:20 +01:00
Makefile_32	x86: do not use $(ARCH) when not needed	2007-11-12 21:02:20 +01:00
Makefile_32.cpu	x86: move i386 and x86_64 Makefiles to arch/x86	2007-10-25 22:27:34 +02:00
Makefile_64	x86: do not use $(ARCH) when not needed	2007-11-12 21:02:20 +01:00