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Message-ID: <20090420192917.GB25629@elte.hu>
Date: Mon, 20 Apr 2009 21:29:17 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Steven Rostedt <rostedt@...dmis.org>,
Frédéric Weisbecker <fweisbec@...il.com>
Cc: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 0/4] [GIT PULL] tracing: recursion and compile fixes
another testbox shows a self-test triggered ring-buffer warning:
PM: Adding info for No Bus:network_throughput
initcall pm_qos_power_init+0x0/0xf0 returned 0 after 10742 usecs
calling software_resume+0x0/0x483 @ 1
initcall software_resume+0x0/0x483 returned -2 after 0 usecs
initcall software_resume+0x0/0x483 returned with error code -2
calling taskstats_init+0x0/0xbe @ 1
registered taskstats version 1
initcall taskstats_init+0x0/0xbe returned 0 after 976 usecs
calling clear_boot_tracer+0x0/0x52 @ 1
initcall clear_boot_tracer+0x0/0x52 returned 0 after 0 usecs
calling event_trace_self_tests_init+0x0/0x5f @ 1
Running tests on trace events:
Testing event kfree_skb: OK
Testing event kmalloc: OK
Testing event kmem_cache_alloc: OK
Testing event kmalloc_node: OK
Testing event kmem_cache_alloc_node: OK
Testing event kfree: OK
Testing event kmem_cache_free: OK
Testing event irq_handler_exit: OK
Testing event irq_handler_entry: OK
Testing event softirq_entry: OK
Testing event softirq_exit: OK
Testing event lock_acquired: OK
Testing event lock_acquire: OK
Testing event lock_release: OK
Testing event lock_contended: OK
Testing event sched_kthread_stop: OK
Testing event sched_kthread_stop_ret: OK
Testing event sched_wait_task: OK
Testing event sched_wakeup: OK
Testing event sched_wakeup_new: OK
Testing event sched_switch: OK
Testing event sched_migrate_task: OK
Testing event sched_process_free: OK
Testing event sched_process_exit: OK
Testing event sched_process_wait: OK
Testing event sched_process_fork: OK
Testing event sched_signal_send: OK
Running tests on trace event systems:
Testing event system skb: OK
Testing event system kmem: OK
Testing event system irq: OK
Testing event system lockdep: OK
Testing event system sched: OK
Running tests on all trace events:
Testing all events: OK
Running tests again, along with the function tracer
Running tests on trace events:
Testing event kfree_skb: OK
Testing event kmalloc: OK
Testing event kmem_cache_alloc: OK
Testing event kmalloc_node: OK
Testing event kmem_cache_alloc_node: OK
Testing event kfree: OK
Testing event kmem_cache_free: OK
Testing event irq_handler_exit: OK
Testing event irq_handler_entry: OK
Testing event softirq_entry: <7>hub 1-0:1.0: hub_suspend
usb usb1: bus auto-suspend
ehci_hcd 0000:00:10.4: suspend root hub
OK
Testing event softirq_exit: OK
Testing event lock_acquired: OK
Testing event lock_acquire: OK
Testing event lock_release: OK
Testing event lock_contended: OK
Testing event sched_kthread_stop: OK
Testing event sched_kthread_stop_ret: OK
Testing event sched_wait_task: OK
Testing event sched_wakeup: OK
Testing event sched_wakeup_new: OK
Testing event sched_switch: OK
Testing event sched_migrate_task: OK
Testing event sched_process_free: OK
Testing event sched_process_exit: OK
Testing event sched_process_wait: OK
Testing event sched_process_fork: OK
Testing event sched_signal_send: OK
Running tests on trace event systems:
Testing event system skb: OK
Testing event system kmem: OK
Testing event system irq: OK
Testing event system lockdep: OK
Testing event system sched: OK
Running tests on all trace events:
Testing all events: <4>Tracing recursion: HC[0]:SC[0]:NMI[0]
------------[ cut here ]------------
WARNING: at kernel/trace/ring_buffer.c:1510 ring_buffer_lock_reserve+0xf7/0x1ce()
Hardware name: To Be Filled By O.E.M.
Pid: 1, comm: swapper Not tainted 2.6.30-rc2-tip-01538-ge8201b9-dirty #37740
Call Trace:
<IRQ> [<ffffffff80268a01>] warn_slowpath+0xcc/0x114
[<ffffffff80299ed3>] ? trace_hardirqs_on_caller+0x11d/0x179
[<ffffffff80299ba6>] ? mark_held_locks+0x60/0x95
[<ffffffff802ca335>] ring_buffer_lock_reserve+0xf7/0x1ce
[<ffffffff802ceb60>] trace_buffer_lock_reserve+0x34/0x7e
[<ffffffff810c8f97>] ? do_IRQ+0xf/0xe8
[<ffffffff802cf949>] trace_current_buffer_lock_reserve+0x36/0x4c
[<ffffffff802d9da4>] function_test_events_call+0x7e/0xe2
[<ffffffff80216313>] ? ret_from_intr+0x0/0x16
[<ffffffff80215616>] ftrace_call+0x5/0x2b
[<ffffffff8021630e>] ? common_interrupt+0xe/0x13
[<ffffffff810c8f9c>] ? do_IRQ+0x14/0xe8
[<ffffffff8021630e>] ? common_interrupt+0xe/0x13
[<ffffffff80216313>] ret_from_intr+0x0/0x16
<EOI> [<ffffffff802c311c>] ? trace_clock_local+0x37/0x57
[<ffffffff80254b27>] ? __wake_up+0x57/0x7a
[<ffffffff802c9e60>] ? rb_reserve_next_event+0x73/0x319
[<ffffffff802f6106>] ? ftrace_raw_event_kmalloc+0x11/0xdd
[<ffffffff802d0ac8>] ? trace_wake_up+0x41/0x57
[<ffffffff802ca3ab>] ? ring_buffer_lock_reserve+0x16d/0x1ce
[<ffffffff802ceb60>] ? trace_buffer_lock_reserve+0x34/0x7e
[<ffffffff802c278d>] ? tracepoint_entry_add_probe+0xb3/0x12b
[<ffffffff802c278d>] ? tracepoint_entry_add_probe+0xb3/0x12b
[<ffffffff802cf949>] ? trace_current_buffer_lock_reserve+0x36/0x4c
[<ffffffff802c278d>] ? tracepoint_entry_add_probe+0xb3/0x12b
[<ffffffff802f615d>] ? ftrace_raw_event_kmalloc+0x68/0xdd
[<ffffffff802c278d>] ? tracepoint_entry_add_probe+0xb3/0x12b
[<ffffffff8031e265>] ? __kmalloc+0x268/0x298
[<ffffffff802969c6>] ? ftrace_event_lock_acquire+0x0/0x89
[<ffffffff802c278d>] ? tracepoint_entry_add_probe+0xb3/0x12b
[<ffffffff802c1e5f>] ? get_tracepoint+0x12/0x274
[<ffffffff802969c6>] ? ftrace_event_lock_acquire+0x0/0x89
[<ffffffff802c2875>] ? tracepoint_add_probe+0x70/0xf6
[<ffffffff802c2cf0>] ? tracepoint_probe_register+0x40/0xbc
[<ffffffff802968dd>] ? ftrace_reg_event_lock_acquire+0x2b/0x5c
[<ffffffff802d886f>] ? ftrace_event_enable_disable+0x43/0x59
[<ffffffff802d8cb4>] ? ftrace_set_clr_event+0x10c/0x15b
[<ffffffff81b70aa3>] ? event_trace_self_tests+0x39b/0x3e6
[<ffffffff81b70c52>] ? event_trace_self_tests_init+0x0/0x5f
[<ffffffff81b70c8d>] ? event_trace_self_tests_init+0x3b/0x5f
[<ffffffff8020a0b6>] ? do_one_initcall+0x84/0x1ad
[<ffffffff8029c513>] ? __lock_acquire+0x851/0x8d3
[<ffffffff8037d3de>] ? get_inode_number+0x61/0xc2
[<ffffffff8037d4f1>] ? proc_register+0xb2/0x139
[<ffffffff8037d553>] ? proc_register+0x114/0x139
[<ffffffff8021df9e>] ? native_sched_clock+0x25/0x9c
[<ffffffff8021df73>] ? sched_clock+0x33/0x39
[<ffffffff80297ccf>] ? lock_release_holdtime+0x2f/0x19d
[<ffffffff8037d553>] ? proc_register+0x114/0x139
[<ffffffff8029d44b>] ? __lock_release+0x177/0x196
[<ffffffff8037d4f1>] ? proc_register+0xb2/0x139
[<ffffffff80637f3e>] ? _raw_spin_unlock+0x14f/0x16e
[<ffffffff810c7e43>] ? _spin_unlock+0x3a/0x55
[<ffffffff8037d553>] ? proc_register+0x114/0x139
[<ffffffff8037d6de>] ? create_proc_entry+0x92/0xbe
[<ffffffff802b95a1>] ? register_irq_proc+0xc2/0xf2
[<ffffffff81b53140>] ? early_idt_handler+0x0/0x71
[<ffffffff81b53140>] ? early_idt_handler+0x0/0x71
[<ffffffff81b53aa8>] ? kernel_init+0xb2/0x11a
[<ffffffff81b53140>] ? early_idt_handler+0x0/0x71
[<ffffffff80216a4a>] ? child_rip+0xa/0x20
[<ffffffff802163d0>] ? restore_args+0x0/0x30
[<ffffffff81b539f6>] ? kernel_init+0x0/0x11a
[<ffffffff80216a40>] ? child_rip+0x0/0x20
---[ end trace 0d52030ff90bb47d ]---
OK
initcall event_trace_self_tests_init+0x0/0x5f returned 0 after 342773 usecs
calling fail_page_alloc_debugfs+0x0/0x10d @ 1
initcall fail_page_alloc_debugfs+0x0/0x10d returned 0 after 976 usecs
calling max_swapfiles_check+0x0/0x2d @ 1
initcall max_swapfiles_check+0x0/0x2d returned 0 after 0 usecs
calling failslab_debugfs_init+0x0/0x91 @ 1
initcall failslab_debugfs_init+0x0/0x91 returned 0 after 0 usecs
calling fail_make_request_debugfs+0x0/0x40 @ 1
initcall fail_make_request_debugfs+0x0/0x40 returned 0 after 0 usecs
calling random32_reseed+0x0/0xce @ 1
That config is attached too.
Ingo
View attachment "config" of type "text/plain" (67508 bytes)
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