Frederic Weisbecker c2c5d45d46 perf: Stop stack frame walking off kernel addresses boundaries ...

While processing kernel perf callchains, an bad entry can be
considered as a valid stack pointer but not as a kernel address.

In this case, we hang in an endless loop. This can happen in an
x86-32 kernel after processing the last entry in a kernel
stacktrace.

Just stop the stack frame walking after we encounter an invalid
kernel address.

This fixes a hard lockup in x86-32.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1262227945-27014-1-git-send-regression-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2010-01-13 09:32:54 +01:00

..

acpi

ACPI: introduce kernel parameter acpi_sleep=sci_force_enable

2009-12-30 18:32:01 -05:00

apic

Revert "x86, apic: Use logical flat on intel with <= 8 logical cpus"

2010-01-11 16:47:57 -08:00

cpu

Merge branch 'perf-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-31 11:56:24 -08:00

.gitignore

…

alternative.c

Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-09-14 07:57:32 -07:00

amd_iommu_init.c

x86/amd-iommu: Fix initialization failure panic

2009-12-21 15:51:23 +01:00

amd_iommu.c

iommu-helper: use bitmap library

2009-12-16 07:20:18 -08:00

aperture_64.c

x86: Gart: fix breakage due to IOMMU initialization cleanup

2009-12-14 08:57:40 +01:00

apm_32.c

x86: Remove BKL from apm_32

2009-10-14 17:04:48 +02:00

asm-offsets_32.c

lguest: optimize by coding restore_flags and irq_enable in assembler.

2009-06-12 22:27:03 +09:30

asm-offsets_64.c

tracing: Define NR_syscalls for x86_64

2009-08-26 21:29:58 +02:00

asm-offsets.c

…

audit_64.c

…

bios_uv.c

x86: uv: update XPC to handle updated BIOS interface

2009-12-16 07:20:14 -08:00

bootflag.c

…

check.c

…

cpuid.c

x86, msr/cpuid: Register enough minors for the MSR and CPUID drivers

2009-12-15 15:13:07 -08:00

crash_dump_32.c

x86: crash_dump: Fix non-pae kdump kernel memory accesses

2009-10-26 12:38:59 +01:00

crash_dump_64.c

…

crash.c

x86: Use x86_platform for iommu_shutdown

2009-11-08 13:12:26 +01:00

doublefault_32.c

x86: Use get_desc_base()

2009-07-19 18:27:51 +02:00

ds_selftest.c

…

ds_selftest.h

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ds.c

percpu: make percpu symbols in x86 unique

2009-10-29 22:34:14 +09:00

dumpstack_32.c

perf events, x86/stacktrace: Make stack walking optional

2009-12-17 09:56:19 +01:00

dumpstack_64.c

perf events, x86/stacktrace: Make stack walking optional

2009-12-17 09:56:19 +01:00

dumpstack.c

perf: Stop stack frame walking off kernel addresses boundaries

2010-01-13 09:32:54 +01:00

dumpstack.h

perf events, x86/stacktrace: Make stack walking optional

2009-12-17 09:56:19 +01:00

e820.c

x86: Fix size for ex trampoline with 32bit

2010-01-04 13:20:11 -08:00

early_printk.c

x86: earlyprintk: Fix regression to handle serial,ttySn as 1 arg

2009-10-01 10:34:16 +02:00

early-quirks.c

…

efi_32.c

…

efi_64.c

x86: Make 64-bit efi_ioremap use ioremap on MMIO regions

2009-08-03 13:34:25 -07:00

efi_stub_32.S

…

efi_stub_64.S

…

efi.c

x86: Make EFI RTC function depend on 32bit again

2009-10-27 12:35:48 +01:00

entry_32.S

x86, 32-bit: Use same regs as 64-bit for kernel_thread_helper

2009-12-10 15:55:36 -08:00

entry_64.S

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-16 12:02:37 -08:00

ftrace.c

Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-08 13:27:33 -08:00

head32.c

x86: Use find_e820() instead of hard coded trampoline address

2009-12-11 09:28:22 +01:00

head64.c

x86: Use find_e820() instead of hard coded trampoline address

2009-12-11 09:28:22 +01:00

head_32.S

x86-32: Use symbolic constants, safer CPUID when enabling EFER.NX

2009-11-16 13:44:56 -08:00

head_64.S

Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-08 13:27:33 -08:00

head.c

…

hpet.c

x86: hpet: Make WARN_ON understandable

2009-11-27 20:37:41 +01:00

hw_breakpoint.c

hw-breakpoints: Use overflow handler instead of the event callback

2009-12-06 08:27:18 +01:00

i386_ksyms_32.c

x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y

2009-10-01 08:42:24 +02:00

i387.c

…

i8237.c

…

i8253.c

x86: Do not unregister PIT clocksource on PIT oneshot setup/shutdown

2009-08-21 21:13:37 +02:00

i8259.c

…

init_task.c

Use new __init_task_data macro in arch init_task.c files.

2009-09-21 06:27:08 +02:00

io_delay.c

…

ioport.c

x86-64, paravirt: Call set_iopl_mask() on 64 bits

2009-12-09 16:54:08 -08:00

irq_32.c

x86: Unify fixup_irqs() for 32-bit and 64-bit kernels

2009-11-02 15:56:34 +01:00

irq_64.c

x86: Unify fixup_irqs() for 32-bit and 64-bit kernels

2009-11-02 15:56:34 +01:00

irq.c

genirq: Convert irq_desc.lock to raw_spinlock

2009-12-14 23:55:33 +01:00

irqinit.c

x86: UV RTC: Rename generic_interrupt to x86_platform_ipi

2009-10-14 18:27:11 +02:00

k8.c

…

kdebugfs.c

…

kgdb.c

kgdb,x86: do not set kgdb_single_step on x86

2009-12-11 08:43:18 -06:00

kprobes.c

Merge branch 'for-next' into for-linus

2009-12-07 18:36:35 +01:00

kvm.c

KVM guest: do not batch pte updates from interrupt context

2009-09-10 18:10:50 +03:00

kvmclock.c

Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-09-18 14:05:47 -07:00

ldt.c

cpumask: use mm_cpumask() wrapper: x86

2009-09-24 09:34:52 +09:30

machine_kexec_32.c

Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-08 13:27:33 -08:00

machine_kexec_64.c

hw-breakpoints: cleanup HW Breakpoint registers before kexec

2009-06-02 22:47:00 +02:00

Makefile

cs5535: drop the Geode-specific MFGPT/GPIO code

2009-12-15 08:53:28 -08:00

mca_32.c

…

microcode_amd.c

arch/x86/kernel/microcode*: Use pr_fmt() and remove duplicated KERN_ERR prefix

2009-12-09 08:25:57 +01:00

microcode_core.c

Revert "x86, ucode-amd: Ensure ucode update on suspend/resume after CPU off/online cycle"

2009-12-23 15:04:53 -08:00

microcode_intel.c

arch/x86/kernel/microcode*: Use pr_fmt() and remove duplicated KERN_ERR prefix

2009-12-09 08:25:57 +01:00

mmconf-fam10h_64.c

…

module.c

module: cleanup FIXME comments about trimming exception table entries.

2009-06-12 21:47:05 +09:30

mpparse.c

x86: Use find_e820() instead of hard coded trampoline address

2009-12-11 09:28:22 +01:00

mrst.c

x86: Add Moorestown early detection

2009-08-31 11:09:40 +02:00

msr.c

x86, msr/cpuid: Register enough minors for the MSR and CPUID drivers

2009-12-15 15:13:07 -08:00

olpc.c

cs5535: move VSA2 checks into linux/cs5535.h

2009-12-15 08:53:28 -08:00

paravirt_patch_32.c

…

paravirt_patch_64.c

…

paravirt-spinlocks.c

locking: Convert __raw_spin* functions to arch_spin*

2009-12-14 23:55:32 +01:00

paravirt.c

Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-09-18 14:05:47 -07:00

pci-calgary_64.c

iommu-helper: use bitmap library

2009-12-16 07:20:18 -08:00

pci-dma.c

x86: Split swiotlb initialization into two stages

2009-12-15 13:01:57 +01:00

pci-gart_64.c

iommu-helper: use bitmap library

2009-12-16 07:20:18 -08:00

pci-nommu.c

x86: Kill bad_dma_address variable

2009-11-17 07:53:21 +01:00

pci-swiotlb.c

x86: Split swiotlb initialization into two stages

2009-12-15 13:01:57 +01:00

pcspeaker.c

…

pmtimer_64.c

…

probe_roms_32.c

…

process_32.c

x86: Use KERN_DEFAULT log-level in __show_regs()

2009-12-28 09:40:21 +01:00

process_64.c

x86: Use KERN_DEFAULT log-level in __show_regs()

2009-12-28 09:40:21 +01:00

process.c

x86: Use KERN_DEFAULT log-level in __show_regs()

2009-12-28 09:40:21 +01:00

ptrace.c

x86/ptrace: make genregs[32]_get/set more robust

2009-12-17 07:04:56 -08:00

pvclock.c

x86: Fix warning in pvclock.c

2009-07-14 16:25:05 +02:00

quirks.c

x86: AMD Northbridge: Verify NB's node is online

2009-11-16 15:43:05 +01:00

reboot_fixups_32.c

cs5535: move the DIVIL MSR definition into linux/cs5535.h

2009-12-15 08:53:28 -08:00

reboot.c

Merge branch 'linus' into x86/urgent

2009-12-07 13:14:18 +01:00

relocate_kernel_32.S

…

relocate_kernel_64.S

…

rtc.c

Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-09-18 14:05:47 -07:00

scx200_32.c

…

setup_percpu.c

x86: setup_percpu.c: Use pr_<level> and add pr_fmt(fmt)

2009-12-10 08:57:50 +01:00

setup.c

x86: Use find_e820() instead of hard coded trampoline address

2009-12-11 09:28:22 +01:00

sfi.c

SFI: remove unneeded includes

2009-09-15 15:08:40 -04:00

signal.c

x86: Merge sys_sigaltstack

2009-12-09 16:28:59 -08:00

smp.c

Revert "x86, timers: Check for pending timers after (device) interrupts"

2009-10-09 15:58:20 +02:00

smpboot.c

x86: Limit the number of processor bootup messages

2009-12-11 15:16:00 -08:00

stacktrace.c

perf events, x86/stacktrace: Make stack walking optional

2009-12-17 09:56:19 +01:00

step.c

x86: Use get_desc_base()

2009-07-19 18:27:51 +02:00

sys_i386_32.c

Unify sys_mmap*

2009-12-11 06:44:29 -05:00

sys_x86_64.c

Unify sys_mmap*

2009-12-11 06:44:29 -05:00

syscall_64.c

…

syscall_table_32.S

Unify sys_mmap*

2009-12-11 06:44:29 -05:00

tboot.c

x86, intel_txt: clean up the impact on generic code, unbreak non-x86

2009-09-01 18:25:07 -07:00

tce_64.c

…

test_nx.c

…

test_rodata.c

…

time.c

x86: fix kernel panic on 32 bits when profiling

2009-10-12 11:53:51 -07:00

tlb_uv.c

Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-08 13:27:33 -08:00

tls.c

…

tls.h

…

topology.c

…

trampoline_32.S

x86: cpuinit-annotate SMP boot trampolines properly

2009-09-20 20:23:37 +02:00

trampoline_64.S

x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop

2009-10-12 18:06:48 +02:00

trampoline.c

x86: Use find_e820() instead of hard coded trampoline address

2009-12-11 09:28:22 +01:00

traps.c

Merge commit 'perf/core' into perf/hw-breakpoint

2009-10-18 01:12:33 +02:00

tsc_sync.c

locking: Convert __raw_spin* functions to arch_spin*

2009-12-14 23:55:32 +01:00

tsc.c

x86: Reenable TSC sync check at boot, even with NONSTOP_TSC

2009-12-17 14:44:35 -08:00

uv_irq.c

x86, irq: Allow 0xff for /proc/irq/[n]/smp_affinity on an 8-cpu system

2009-12-17 22:03:06 -08:00

uv_sysfs.c

…

uv_time.c

x86: UV RTC: Always enable RTC clocksource

2009-11-23 19:41:30 +01:00

verify_cpu_64.S

…

visws_quirks.c

Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-08 13:27:33 -08:00

vm86_32.c

x86, 32-bit: Convert sys_vm86 & sys_vm86old

2009-12-09 16:29:23 -08:00

vmi_32.c

x86, vmi: Mark VMI deprecated and schedule it for removal

2009-10-08 22:27:55 +02:00

vmiclock_32.c

x86: vmiclock: Fix printk format

2009-11-18 12:31:06 +01:00

vmlinux.lds.S

x86: Regex support and known-movable symbols for relocs, fix _end

2009-12-14 13:55:20 -08:00

vsmp_64.c

…

vsyscall_64.c

Merge branch 'timers-for-linus-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-08 19:28:09 -08:00

x86_init.c

Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-08 13:27:33 -08:00

x8664_ksyms_64.c

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-16 12:02:37 -08:00

xsave.c

…