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
..
alpha	alpha: sg_virt() fallout	2007-10-23 12:31:05 +02:00
arm	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	2007-11-16 18:32:08 -08:00
avr32	[AVR32] Export intc_get_pending symbol	2007-11-15 13:47:20 +01:00
blackfin	Blackfin arch: reclaim a few bytes from the end of our init section	2007-10-30 12:00:02 +08:00
cris	CRISv10 fasttimer: Scrap INLINE and name timeval_cmp better	2007-11-14 18:45:47 -08:00
frv	FRV: Remove the section annotation on free_initmem()	2007-11-09 15:02:25 -08:00
h8300	Kbuild/doc: fix links to Documentation files	2007-10-30 14:26:30 -07:00
ia64	Add IORESOUCE_BUSY flag for System RAM	2007-11-14 18:45:39 -08:00
m32r	spelling fixes: arch/m32r/	2007-10-20 01:14:39 +02:00
m68k	m68k: sg fallout	2007-10-24 08:55:40 +02:00
m68knommu	m68knommu: mark mem init functions as __init	2007-10-23 20:45:44 -07:00
mips	[MIPS] N32 needs to use the compat version of sys_nfsservctl.	2007-11-15 23:21:52 +00:00
parisc	parisc: fix sg_page() fallout	2007-10-23 09:49:31 +02:00
powerpc	[POWERPC] Silence an annoying boot message	2007-11-13 16:23:47 +11:00
ppc	[POWERPC] Avoid unpaired stwcx. on some processors	2007-11-13 16:22:43 +11:00
s390	sched: restore deterministic CPU accounting on powerpc	2007-11-09 22:39:38 +01:00
sh	Merge branch 'page_colouring_despair'	2007-11-08 17:01:42 +09:00
sh64	sh64: Kill off duplicate includes.	2007-11-05 12:18:17 +09:00
sparc	[SPARC]: Remove duplicate includes.	2007-11-06 21:23:11 -08:00
sparc64	[SPARC]: Remove duplicate includes.	2007-11-06 21:23:11 -08:00
um	uml: fix build for !CONFIG_PRINTK	2007-11-14 18:45:43 -08:00
v850	spelling fixes: arch/v850/	2007-10-20 01:24:05 +02:00
x86	lockdep: annotate do_debug() trap handler	2007-11-26 20:42:19 +01:00
xtensa	Kbuild/doc: fix links to Documentation files	2007-10-30 14:26:30 -07:00