From: Vince Weaver <vincent.weaver@maine.edu>
To: Vince Weaver <vincent.weaver@maine.edu>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, "H.J. Lu" <hjl.tools@gmail.com>
Subject: Re: perf_fuzzer compiled for x32 causes reboot
Date: Sun, 23 Feb 2014 22:02:15 -0500 (EST) [thread overview]
Message-ID: <alpine.DEB.2.10.1402232151280.19337@vincent-weaver-1.um.maine.edu> (raw)
In-Reply-To: <alpine.DEB.2.10.1402230859560.18653@vincent-weaver-1.um.maine.edu>
On Sun, 23 Feb 2014, Vince Weaver wrote:
>
> and as far as I can tell nothing touches rbp again until the segfault.
> Nothing in _memset_sse2 does as far as I can tell.
I only know enough about ftrace to be dangerous, but here is what I think
is the trace of the problem:
perf_fuzzer-11492 [000] 197077.488363: function: intel_get_event_constraints
perf_fuzzer-11492 [000] 197077.488363: function: intel_pebs_constraints
perf_fuzzer-11492 [000] 197077.488365: function: intel_put_event_constraints
perf_fuzzer-11492 [000] 197077.488365: function: intel_pmu_enable_all
perf_fuzzer-11492 [000] 197077.488366: function: intel_pmu_pebs_enable_all
perf_fuzzer-11492 [000] 197077.488367: function: intel_pmu_lbr_enable_all
perf_fuzzer-11492 [000] 197077.488366: function: intel_pmu_pebs_enable_all
perf_fuzzer-11492 [000] 197077.488367: function: intel_pmu_lbr_enable_all
perf_fuzzer-11492 [000] 197077.488368: function: mutex_unlock
perf_fuzzer-11492 [000] 197077.488368: function: mutex_lock
perf_fuzzer-11492 [000] 197077.488369: function: _cond_resched
perf_fuzzer-11492 [000] 197077.488370: function: _raw_spin_lock_irq
perf_fuzzer-11492 [000] 197077.488370: function: mutex_unlock
perf_fuzzer-11492 [000] 197077.488371: function: mutex_lock
perf_fuzzer-11492 [000] 197077.488371: function: _cond_resched
perf_fuzzer-11492 [000] 197077.488372: function: _raw_spin_lock_irq
perf_fuzzer-11492 [000] 197077.488373: function: mutex_unlock
perf_fuzzer-11492 [000] 197077.488373: function: mutex_lock
perf_fuzzer-11492 [000] 197077.488374: function: _cond_resched
perf_fuzzer-11492 [000] 197077.488374: function: _raw_spin_lock_irq
perf_fuzzer-11492 [000] 197077.488375: function: smp_call_function_single
perf_fuzzer-11492 [000] 197077.488376: function: _raw_spin_lock
perf_fuzzer-11492 [000] 197077.488377: function: mutex_unlock
perf_fuzzer-11492 [000] 197077.488378: function: mutex_lock
perf_fuzzer-11492 [000] 197077.488378: function: _cond_resched
perf_fuzzer-11492 [000] 197077.488379: function: _raw_spin_lock_irq
perf_fuzzer-11492 [000] 197077.488380: function: smp_call_function_single
perf_fuzzer-11492 [000] 197077.488380: function: _raw_spin_lock
perf_fuzzer-11492 [000] 197077.488381: function: mutex_unlock
perf_fuzzer-11492 [000] 197077.488382: function: mutex_unlock
perf_fuzzer-11492 [000] 197077.488383: function: syscall_trace_leave
perf_fuzzer-11492 [000] 197077.488383: sys_exit: NR 1073741981 = 0
perf_fuzzer-11492 [000] 197077.488387: function: do_device_not_available
perf_fuzzer-11492 [000] 197077.488387: function: math_state_restore
perf_fuzzer-11492 [000] 197077.488390: function: trace_do_page_fault
perf_fuzzer-11492 [000] 197077.488391: page_fault_user: address=__per_cpu_end ip=__per_cpu_end error_code=0x6
perf_fuzzer-11492 [000] 197077.488395: function: perf_callchain
perf_fuzzer-11492 [000] 197077.488396: function: copy_from_user_nmi
perf_fuzzer-11492 [000] 197077.488397: function: trace_do_page_fault
perf_fuzzer-11492 [000] 197077.488398: page_fault_kernel: address=irq_stack_union ip=copy_user_generic_string error_code=0x0
perf_fuzzer-11492 [000] 197077.488399: function: __do_page_fault
perf_fuzzer-11492 [000] 197077.488400: function: bad_area_nosemaphore
perf_fuzzer-11492 [000] 197077.488401: function: __bad_area_nosemaphore
perf_fuzzer-11492 [000] 197077.488401: function: no_context
perf_fuzzer-11492 [000] 197077.488402: function: fixup_exception
perf_fuzzer-11492 [000] 197077.488403: function: search_exception_tables
perf_fuzzer-11492 [000] 197077.488403: function: search_extable
perf_fuzzer-11492 [000] 197077.488405: function: copy_user_handle_tail
perf_fuzzer-11492 [000] 197077.488406: function: trace_do_page_fault
perf_fuzzer-11492 [000] 197077.488406: page_fault_kernel: address=irq_stack_union ip=copy_user_handle_tail error_code=0x0
perf_fuzzer-11492 [000] 197077.488407: function: __do_page_fault
perf_fuzzer-11492 [000] 197077.488408: function: bad_area_nosemaphore
perf_fuzzer-11492 [000] 197077.488409: function: __bad_area_nosemaphore
perf_fuzzer-11492 [000] 197077.488409: function: no_context
perf_fuzzer-11492 [000] 197077.488410: function: fixup_exception
perf_fuzzer-11492 [000] 197077.488410: function: search_exception_tables
perf_fuzzer-11492 [000] 197077.488411: function: search_extable
perf_fuzzer-11492 [000] 197077.488413: function: perf_output_begin
perf_fuzzer-11492 [000] 197077.488414: function: perf_output_copy
perf_fuzzer-11492 [000] 197077.488415: function: perf_output_copy
perf_fuzzer-11492 [000] 197077.488415: function: perf_output_copy
perf_fuzzer-11492 [000] 197077.488416: function: perf_output_copy
perf_fuzzer-11492 [000] 197077.488418: function: perf_output_copy
perf_fuzzer-11492 [000] 197077.488419: function: perf_output_copy
perf_fuzzer-11492 [000] 197077.488419: function: perf_output_end
perf_fuzzer-11492 [000] 197077.488420: function: perf_output_put_handle
perf_fuzzer-11492 [000] 197077.488421: function: __do_page_fault
perf_fuzzer-11492 [000] 197077.488422: function: down_read_trylock
perf_fuzzer-11492 [000] 197077.488423: function: _cond_resched
perf_fuzzer-11492 [000] 197077.488423: function: find_vma
perf_fuzzer-11492 [000] 197077.488424: function: bad_area
perf_fuzzer-11492 [000] 197077.488425: function: up_read
perf_fuzzer-11492 [000] 197077.488426: function: __bad_area_nosemaphore
perf_fuzzer-11492 [000] 197077.488426: function: is_prefetch
perf_fuzzer-11492 [000] 197077.488427: function: convert_ip_to_linear
perf_fuzzer-11492 [000] 197077.488428: function: unhandled_signal
perf_fuzzer-11492 [000] 197077.488429: function: __printk_ratelimit
perf_fuzzer-11492 [000] 197077.488430: function: _raw_spin_trylock
perf_fuzzer-11492 [000] 197077.488430: function: _raw_spin_unlock_irqrestore
perf_fuzzer-11492 [000] 197077.488431: function: printk
perf_fuzzer-11492 [000] 197077.488432: function: vprintk_emit
perf_fuzzer-11492 [000] 197077.488434: function: _raw_spin_lock
perf_fuzzer-11492 [000] 197077.488443: function: cont_add
perf_fuzzer-11492 [000] 197077.488444: function: console_trylock
perf_fuzzer-11492 [000] 197077.488445: function: down_trylock
perf_fuzzer-11492 [000] 197077.488445: function: _raw_spin_lock_irqsave
perf_fuzzer-11492 [000] 197077.488446: function: _raw_spin_unlock_irqrestore
perf_fuzzer-11492 [000] 197077.488447: function: console_unlock
perf_fuzzer-11492 [000] 197077.488447: function: _raw_spin_lock_irqsave
perf_fuzzer-11492 [000] 197077.488449: function: print_time
perf_fuzzer-11492 [000] 197077.488452: function: T.950
perf_fuzzer-11492 [000] 197077.488453: console: [197179.420735] perf_fuzzer[11492]: segfault at 22e0 ip 000000000041efab sp 00000000ffda0938 error 6
next prev parent reply other threads:[~2014-02-24 3:00 UTC|newest]
Thread overview: 115+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-21 20:25 perf_fuzzer causes reboot Vince Weaver
2014-02-21 22:13 ` perf_fuzzer compiled for x32 " Vince Weaver
2014-02-21 22:34 ` Vince Weaver
2014-02-22 4:50 ` Vince Weaver
2014-02-22 5:03 ` H. Peter Anvin
2014-02-22 6:26 ` H. Peter Anvin
2014-02-23 5:18 ` Vince Weaver
2014-02-23 5:24 ` H. Peter Anvin
2014-02-23 6:07 ` H. Peter Anvin
2014-02-23 14:05 ` Vince Weaver
2014-02-24 3:02 ` Vince Weaver [this message]
2014-02-24 5:22 ` H. Peter Anvin
2014-02-24 15:35 ` Vince Weaver
2014-02-24 16:34 ` Vince Weaver
2014-02-24 16:47 ` H. Peter Anvin
2014-02-24 17:10 ` Vince Weaver
2014-02-24 17:25 ` Peter Zijlstra
2014-02-24 17:32 ` Vince Weaver
2014-02-24 17:40 ` H. Peter Anvin
2014-02-24 18:00 ` Vince Weaver
2014-02-24 18:07 ` Vince Weaver
2014-02-24 18:34 ` H. Peter Anvin
2014-02-24 19:13 ` Steven Rostedt
2014-02-24 19:15 ` H. Peter Anvin
2014-02-24 19:30 ` Peter Zijlstra
2014-02-24 19:32 ` Steven Rostedt
2014-02-25 3:49 ` H. Peter Anvin
2014-02-25 14:07 ` Vince Weaver
2014-02-25 14:34 ` H. Peter Anvin
2014-02-25 14:43 ` Steven Rostedt
2014-02-25 15:33 ` Vince Weaver
2014-02-26 15:06 ` Vince Weaver
2014-02-27 22:06 ` Vince Weaver
2014-02-27 22:31 ` Steven Rostedt
2014-02-27 22:52 ` H. Peter Anvin
2014-02-27 23:30 ` Steven Rostedt
2014-02-27 23:46 ` H. Peter Anvin
2014-02-28 1:00 ` Vince Weaver
2014-02-28 20:34 ` Paul E. McKenney
2014-02-28 20:47 ` Steven Rostedt
2014-02-28 20:54 ` Peter Zijlstra
2014-02-28 21:17 ` Paul E. McKenney
2014-02-28 21:27 ` Peter Zijlstra
2014-02-28 21:51 ` Paul E. McKenney
2014-02-28 21:55 ` Peter Zijlstra
2014-02-28 22:05 ` Steven Rostedt
2014-02-28 22:23 ` Paul E. McKenney
2014-02-28 1:34 ` Vince Weaver
2014-02-28 2:17 ` H. Peter Anvin
2014-02-28 2:57 ` Steven Rostedt
2014-02-28 11:11 ` Peter Zijlstra
2014-02-28 13:37 ` Steven Rostedt
2014-02-28 14:15 ` Vince Weaver
2014-02-28 14:23 ` Steven Rostedt
2014-02-28 15:07 ` Vince Weaver
2014-02-28 15:13 ` H. Peter Anvin
2014-02-28 15:40 ` Peter Zijlstra
2014-02-28 16:15 ` H. Peter Anvin
2014-02-28 16:29 ` Steven Rostedt
2014-02-28 19:33 ` [PATCH] x86: Rename copy_from_user_nmi() to copy_from_user_trace() Steven Rostedt
2014-02-28 20:46 ` Peter Zijlstra
2014-02-28 20:51 ` Steven Rostedt
2014-02-28 20:58 ` Peter Zijlstra
2014-02-28 21:01 ` Steven Rostedt
2014-02-28 21:17 ` Peter Zijlstra
2014-02-28 20:56 ` perf_fuzzer compiled for x32 causes reboot Peter Zijlstra
2014-02-28 21:06 ` Steven Rostedt
2014-03-01 9:16 ` Ingo Molnar
2014-03-01 9:50 ` Borislav Petkov
2014-03-01 16:50 ` H. Peter Anvin
2014-03-04 23:05 ` Borislav Petkov
2014-03-03 9:16 ` Peter Zijlstra
2014-02-28 20:55 ` Peter Zijlstra
2014-02-28 15:20 ` Steven Rostedt
2014-02-28 15:30 ` Steven Rostedt
2014-02-28 20:38 ` H. Peter Anvin
2014-02-28 20:46 ` Steven Rostedt
2014-02-28 21:18 ` Vince Weaver
2014-02-28 21:30 ` Steven Rostedt
2014-02-28 23:34 ` Vince Weaver
2014-03-01 0:43 ` H. Peter Anvin
2014-03-01 3:36 ` Steven Rostedt
2014-03-01 16:24 ` Andi Kleen
2014-03-02 15:34 ` Vince Weaver
2014-03-02 16:02 ` Vince Weaver
2014-02-28 9:39 ` Peter Zijlstra
2014-02-24 17:40 ` Peter Zijlstra
2014-02-24 17:41 ` Vince Weaver
2014-02-24 17:42 ` H. Peter Anvin
2014-02-24 17:52 ` H. Peter Anvin
2014-02-28 15:33 [PATCH] x86 trace: Fix page fault tracing bug Jiri Olsa
2014-02-28 15:47 ` Peter Zijlstra
2014-02-28 16:05 ` [PATCHv2] " Jiri Olsa
2014-02-28 16:11 ` H. Peter Anvin
2014-02-28 16:23 ` Steven Rostedt
2014-02-28 16:15 ` Steven Rostedt
2014-03-05 0:03 ` [tip:x86/urgent] x86, trace: Fix CR2 corruption when tracing page faults tip-bot for Jiri Olsa
2014-03-05 11:14 ` Peter Zijlstra
2014-03-05 12:20 ` Steven Rostedt
2014-03-05 12:25 ` Peter Zijlstra
2014-03-05 12:33 ` Steven Rostedt
2014-03-05 12:54 ` Peter Zijlstra
2014-03-05 13:02 ` Peter Zijlstra
2014-03-05 13:07 ` Peter Zijlstra
2014-03-05 12:36 ` Peter Zijlstra
2014-03-05 13:00 ` Steven Rostedt
2014-03-05 13:08 ` Peter Zijlstra
2014-03-05 21:37 ` H. Peter Anvin
2014-03-06 8:40 ` Peter Zijlstra
2014-03-06 11:02 ` Steven Rostedt
2014-03-06 14:53 ` [PATCH] x86: Further robustify CR2 handling vs tracing Peter Zijlstra
2014-03-07 23:07 ` [tip:x86/urgent] x86, trace: " tip-bot for Peter Zijlstra
2014-02-28 15:47 ` [PATCH] x86 trace: Fix page fault tracing bug Jiri Olsa
2014-02-28 16:00 ` Steven Rostedt
2014-02-28 16:01 ` Steven Rostedt
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