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linux-pinenote/arch/x86/include/asm
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Tejun Heo b9cd18de4d ptrace,x86: force IRET path after a ptrace_stop() 
The 'sysret' fastpath does not correctly restore even all regular
registers, much less any segment registers or reflags values.  That is
very much part of why it's faster than 'iret'.

Normally that isn't a problem, because the normal ptrace() interface
catches the process using the signal handler infrastructure, which
always returns with an iret.

However, some paths can get caught using ptrace_event() instead of the
signal path, and for those we need to make sure that we aren't going to
return to user space using 'sysret'.  Otherwise the modifications that
may have been done to the register set by the tracer wouldn't
necessarily take effect.

Fix it by forcing IRET path by setting TIF_NOTIFY_RESUME from
arch_ptrace_stop_needed() which is invoked from ptrace_stop().

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-03 17:27:23 -07:00
..
crypto crypto: move x86 to the generic version of ablk_helper 2013-09-24 06:02:24 +10:00
numachip
trace ftrace, perf: Avoid infinite event generation loop 2013-11-19 16:57:40 +01:00
uv x86/UV: Set n_lshift based on GAM_GR_CONFIG MMR for UV3 2014-04-01 12:10:44 +02:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
a.out-core.h
acenv.h ACPICA: Clean up redudant definitions already defined elsewhere 2014-05-27 18:13:08 +02:00
acpi.h ACPICA: Linux headers: Add <asm/acenv.h> to remove mis-ordered inclusion of <asm/acpi.h> 2014-05-27 18:13:07 +02:00
agp.h
alternative-asm.h
alternative.h kprobes/x86: Call out into INT3 handler directly instead of using notifier 2013-07-23 10:12:57 +02:00
amd_nb.h x86/AMD/NB: Fix amd_set_subcaches() parameter type 2014-01-25 08:50:09 +01:00
apb_timer.h
apic.h x86/apic: Always define nox2apic and define it as initdata 2014-02-09 15:15:11 +01:00
apic_flat_64.h
apicdef.h
apm.h
arch_hweight.h
archrandom.h random: Add arch_has_random[_seed]() 2014-03-19 22:24:08 -04:00
asm-offsets.h
asm.h kprobes: Introduce NOKPROBE_SYMBOL() macro to maintain kprobes blacklist 2014-04-24 10:02:56 +02:00
atomic.h arch,x86: Convert smp_mb__*() 2014-04-18 14:20:46 +02:00
atomic64_32.h
atomic64_64.h x86, bitops: Correct the assembly constraints to testing bitops 2013-12-04 14:31:28 -08:00
barrier.h arch,x86: Convert smp_mb__*() 2014-04-18 14:20:46 +02:00
bios_ebda.h
bitops.h arch,x86: Convert smp_mb__*() 2014-04-18 14:20:46 +02:00
boot.h
bootparam_utils.h x86: Don't clear olpc_ofw_header when sentinel is detected 2013-08-09 15:29:48 -07:00
bug.h x86: always define BUG() and HAVE_ARCH_BUG, even with !CONFIG_BUG 2014-04-07 16:36:10 -07:00
bugs.h
cache.h
cacheflush.h
calgary.h
calling.h sched, x86: Optimize the preempt_schedule() call 2013-09-25 14:23:07 +02:00
ce4100.h
checksum.h
checksum_32.h x86, smap: Handle csum_partial_copy_*_user() 2013-09-01 14:09:48 -07:00
checksum_64.h net: Change x86_64 add32_with_carry to allow memory operand 2014-05-05 15:26:29 -04:00
clocksource.h x86, vdso: Make vsyscall_gtod_data handling x86 generic 2014-03-18 12:51:52 -07:00
cmdline.h x86, boot: Carve out early cmdline parsing function 2014-05-20 20:21:24 -07:00
cmpxchg.h x86 cmpxchg.h: fix wrong comment 2013-04-25 10:39:04 +02:00
cmpxchg_32.h
cmpxchg_64.h
compat.h
context_tracking.h context_tracking: Move exception handling to generic code 2013-03-07 17:09:25 +01:00
cpu.h x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
cpu_device_id.h
cpufeature.h Driver core / sysfs patches for 3.15-rc1 2014-04-01 16:28:19 -07:00
cpumask.h
current.h
debugreg.h
delay.h
desc.h x86, trace: Delete __trace_alloc_intr_gate() 2013-11-08 14:15:47 -08:00
desc_defs.h
device.h
div64.h
dma-contiguous.h drivers: dma-contiguous: clean source code and prepare for device tree 2013-08-27 09:18:29 +02:00
dma-mapping.h
dma.h
dmi.h firmware/dmi_scan: generalize for use by other archs 2014-01-23 16:36:57 -08:00
dwarf2.h
e820.h x86: avoid remapping data in parse_setup_data() 2013-08-13 23:29:19 -07:00
edac.h
efi.h x86/efi: Save and restore FPU context around efi_calls (i386) 2014-04-17 13:26:33 +01:00
elf.h x86, vdso: Move the 32-bit vdso special pages after the text 2014-05-05 13:18:56 -07:00
emergency-restart.h reboot: move arch/x86 reboot= handling to generic kernel 2013-07-09 10:33:29 -07:00
entry_arch.h x86, trace: Add irq vector tracepoints 2013-06-20 22:25:34 -07:00
espfix.h x86, espfix: Fix broken header guard 2014-05-02 11:34:17 -07:00
exec.h
fb.h
fixmap.h x86, vdso: Move the vvar and hpet mappings next to the 64-bit vDSO 2014-05-05 13:19:01 -07:00
floppy.h x86: Remove deprecated IRQF_DISABLED 2014-03-04 21:47:51 +01:00
fpu-internal.h x86, fpu: Extend the use of static_cpu_has_safe 2014-04-17 13:26:31 +01:00
frame.h
ftrace.h tracing/syscalls: Allow archs to ignore tracing compat syscalls 2013-02-12 17:46:28 -05:00
futex.h x86: replace futex_atomic_cmpxchg_inatomic() with user_atomic_cmpxchg_inatomic 2013-12-16 09:08:13 -08:00
gart.h
genapic.h
geode.h
gpio.h
hardirq.h x86: hardirq: Make irq_hv_callback_count available for CONFIG_HYPERV=m as well 2014-03-06 12:08:37 +01:00
hash.h lib: introduce arch optimized hash library 2013-12-17 14:27:17 -05:00
highmem.h
hpet.h x86/hpet: Make boot_hpet_disable extern 2014-05-08 08:15:34 +02:00
hugetlb.h x86, mm, hugetlb: Add missing TLB page invalidation for hugetlb_cow() 2014-05-13 16:34:09 -07:00
hw_breakpoint.h
hw_irq.h x86/irq: Clean up VECTOR_UNDEFINED and VECTOR_RETRIGGERED definition 2014-04-14 13:42:05 +02:00
hypertransport.h
hypervisor.h x86: Correctly detect hypervisor 2013-08-05 06:35:33 -07:00
i387.h
i8259.h
ia32.h x86: switch to generic old sigaction 2013-02-03 18:16:27 -05:00
ia32_unistd.h
idle.h
inat.h
inat_types.h
init.h x86, 64bit, mm: Add generic kernel/ident mapping helper 2013-01-29 15:12:25 -08:00
insn.h
inst.h x86, crc32-pclmul: Fix build with older binutils 2013-05-30 16:36:23 -07:00
intel-mid.h x86, intel-mid: Add Merrifield platform support 2014-01-15 14:38:58 -08:00
intel_mid_vrtc.h intel_mid: Renamed *mrst* to *intel_mid* 2013-10-17 16:40:36 -07:00
intel_scu_ipc.h
io.h x86: use generic early_ioremap 2014-04-07 16:36:15 -07:00
io_apic.h x86: Get rid of get_nr_irqs_gsi() 2014-05-16 14:05:19 +02:00
iomap.h
iommu.h
iommu_table.h
iosf_mbi.h x86, iosf: Added Quark MBI identifiers 2014-05-09 14:57:08 -07:00
ipi.h
irq.h nmi: provide the option to issue an NMI back trace to every cpu but current 2014-06-23 16:47:44 -07:00
irq_regs.h
irq_remapping.h iommu: dmar: Provide arch specific irq allocation 2014-05-16 14:05:19 +02:00
irq_vectors.h KVM: VMX: Register a new IPI for posted interrupt 2013-04-16 16:32:39 -03:00
irqflags.h
ist.h
jump_label.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
kbdleds.h
Kbuild x86: use generic early_ioremap 2014-04-07 16:36:15 -07:00
kdebug.h x86/dumpstack: Fix printk_address for direct addresses 2013-11-12 21:06:06 +01:00
kexec.h x86, kexec: Remove 1024G limitation for kexec buffer on 64bit 2013-01-29 15:26:23 -08:00
kgdb.h
kmap_types.h
kmemcheck.h
kprobes.h kprobes/x86: Call exception handlers directly from do_int3/do_debug 2014-04-24 10:02:59 +02:00
kvm_emulate.h KVM: x86: drop set_rflags callback 2014-05-22 17:47:16 +02:00
kvm_guest.h
kvm_host.h KVM: x86: preserve the high 32-bits of the PAT register 2014-06-19 13:43:44 +02:00
kvm_para.h x86, kvm: correctly access the KVM_CPUID_FEATURES leaf at 0x40000101 2014-01-29 18:11:55 +01:00
lguest.h lguest: map Switcher below fixmap. 2013-04-22 15:45:03 +09:30
lguest_hcall.h
linkage.h
local.h x86, bitops: Correct the assembly constraints to testing bitops 2013-12-04 14:31:28 -08:00
local64.h
mach_timer.h
mach_traps.h
math_emu.h
mc146818rtc.h x86: Increase precision of x86_platform.get/set_wallclock() 2013-05-28 14:00:59 -07:00
mce.h hwpoison: remove unused global variable in do_machine_check() 2014-06-04 16:54:11 -07:00
microcode.h x86, microcode: Add a disable chicken bit 2014-05-20 20:21:27 -07:00
microcode_amd.h x86, microcode, AMD: Fix early ucode loading 2014-01-13 19:59:38 +01:00
microcode_intel.h x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
misc.h x86: Improve the printout of the SMP bootup CPU table 2013-09-28 10:10:26 +02:00
mmconfig.h x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
mmu.h x86, vdso: Reimplement vdso.so preparation in build-time C 2014-05-05 13:18:51 -07:00
mmu_context.h sched/x86: Optimize switch_mm() for multi-threaded workloads 2013-08-01 09:10:26 +02:00
mmx.h
mmzone.h
mmzone_32.h x86, platforms: Remove NUMAQ 2014-02-27 08:07:39 -08:00
mmzone_64.h
module.h
mpspec.h x86, platforms: Remove NUMAQ 2014-02-27 08:07:39 -08:00
mpspec_def.h
mshyperv.h x86: hyperv: Fixup the (brain) damage caused by the irq cleanup 2014-03-05 13:42:14 +01:00
msidef.h
msr.h x86: Add another set of MSR accessor functions 2014-03-13 15:34:45 -07:00
mtrr.h Add arch_phys_wc_{add, del} to manipulate WC MTRRs if needed 2013-05-31 13:02:52 +10:00
mutex.h
mutex_32.h arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not 2013-06-26 12:10:55 +02:00
mutex_64.h compiler/gcc4: Add quirk for 'asm goto' miscompilation bug 2013-10-11 07:39:14 +02:00
mwait.h sched/preempt: Fix up missed PREEMPT_NEED_RESCHED folding 2014-01-13 17:38:55 +01:00
nmi.h x86/nmi: Push duration printk() to irq context 2014-02-09 13:17:22 +01:00
nops.h
numa.h x86: delete __cpuinit usage from all x86 files 2013-07-14 19:36:56 -04:00
numa_32.h
olpc.h
olpc_ofw.h
page.h x86/mm: Implement ASLR for hugetlb mappings 2013-11-19 14:24:50 +01:00
page_32.h x86/mm: Implement ASLR for hugetlb mappings 2013-11-19 14:24:50 +01:00
page_32_types.h x86, relocs: Move ELF relocation handling to C 2013-08-07 21:00:04 -07:00
page_64.h
page_64_types.h x86_64: expand kernel stack to 16K 2014-05-30 11:52:51 -07:00
page_types.h x86: revert wrong memblock current limit setting 2014-01-27 21:02:38 -08:00
paravirt.h x86, asmlinkage, paravirt: Make paravirt thunks global 2014-01-29 22:17:17 -08:00
paravirt_types.h x86, asmlinkage, paravirt: Don't rely on local assembler labels 2014-01-29 22:17:17 -08:00
parport.h
pat.h
pci-direct.h
pci-functions.h
pci.h PCI: Turn pcibios_penalize_isa_irq() into a weak function 2014-05-27 16:23:58 -06:00
pci_64.h
pci_x86.h PCI changes for the v3.9 merge window: 2013-02-25 21:18:18 -08:00
percpu.h percpu: add raw_cpu_ops 2014-04-07 16:36:13 -07:00
perf_event.h perf/x86/intel: Add simple Haswell PMU support 2013-06-19 14:43:33 +02:00
perf_event_p4.h perf/x86/intel/P4: Robistify P4 PMU types 2013-04-26 09:31:41 +02:00
pgalloc.h x86, mm: enable split page table lock for PMD level 2013-11-15 09:32:15 +09:00
pgtable-2level.h mm: x86 pgtable: require X86_64 for soft-dirty tracker 2014-06-04 16:54:05 -07:00
pgtable-2level_types.h
pgtable-3level.h mm: save soft-dirty bits on file pages 2013-08-13 17:57:48 -07:00
pgtable-3level_types.h
pgtable.h mm: x86 pgtable: require X86_64 for soft-dirty tracker 2014-06-04 16:54:05 -07:00
pgtable_32.h x86/mm: Convert update_mmu_cache() and update_mmu_cache_pmd() to functions 2013-01-24 16:12:13 +01:00
pgtable_32_types.h
pgtable_64.h mm: x86 pgtable: drop unneeded preprocessor ifdef 2014-06-04 16:54:05 -07:00
pgtable_64_types.h x86-64, espfix: Don't leak bits 31:16 of %esp returning to 16-bit stack 2014-04-30 14:14:28 -07:00
pgtable_types.h x86: define _PAGE_NUMA by reusing software bits on the PMD and PTE levels 2014-06-04 16:53:55 -07:00
posix_types.h
preempt.h percpu: add raw_cpu_ops 2014-04-07 16:36:13 -07:00
probe_roms.h
processor-cyrix.h
processor-flags.h
processor.h x86: Keep thread_info on thread stack in x86_32 2014-03-06 16:56:55 -08:00
prom.h of: remove HAVE_ARCH_DEVTREE_FIXUPS 2013-10-09 20:04:08 -05:00
proto.h x86, vdso: Move syscall and sysenter setup into kernel/cpu/common.c 2014-05-05 13:18:47 -07:00
ptrace.h ptrace,x86: force IRET path after a ptrace_stop() 2014-07-03 17:27:23 -07:00
pvclock-abi.h
pvclock.h pvclock: detect watchdog reset at pvclock read 2013-11-06 09:48:43 +02:00
qrwlock.h x86, locking/rwlocks: Enable qrwlocks on x86 2014-06-06 07:58:29 +02:00
realmode.h x86, realmode: Separate real_mode reserve and setup 2013-01-29 15:13:24 -08:00
reboot.h
reboot_fixups.h
required-features.h x86: Require MOVBE feature in cpuid when we use it 2013-01-28 16:59:55 -08:00
resume-trace.h
rio.h
rmwcc.h x86, bitops: Correct the assembly constraints to testing bitops 2013-12-04 14:31:28 -08:00
rtc.h
rwlock.h
rwsem.h x86 rwsem: avoid taking slow path when stealing write lock 2013-05-07 07:20:17 -07:00
scatterlist.h
seccomp.h
seccomp_32.h
seccomp_64.h
sections.h
segment.h x86, trace: Register exception handler to trace IDT 2013-11-08 14:15:45 -08:00
serial.h
setup.h x86, espfix: Move espfix definitions into a separate header file 2014-05-01 14:16:15 -07:00
setup_arch.h
shmparam.h
sigcontext.h
sigframe.h
sighandling.h x86/signals: Propagate RF EFLAGS bit through the signal restore call 2013-05-28 08:46:50 +02:00
signal.h signals: kill sigfindinword() 2014-06-06 16:08:11 -07:00
simd.h crypto: move x86 to the generic version of ablk_helper 2013-09-24 06:02:24 +10:00
smap.h
smp.h x86: Delete non-required instances of include <linux/init.h> 2014-01-06 21:25:18 -08:00
smpboot_hooks.h
sparsemem.h
special_insns.h x86: Add support for the clflushopt instruction 2014-02-27 08:23:28 -08:00
spinlock.h x86, locking/rwlocks: Enable qrwlocks on x86 2014-06-06 07:58:29 +02:00
spinlock_types.h x86, locking/rwlocks: Enable qrwlocks on x86 2014-06-06 07:58:29 +02:00
sta2x11.h
stackprotector.h
stacktrace.h
string.h
string_32.h
string_64.h
suspend.h
suspend_32.h x86, gdt, hibernate: Store/load GDT for hibernate path. 2013-05-02 11:27:35 -07:00
suspend_64.h x86, gdt, hibernate: Store/load GDT for hibernate path. 2013-05-02 11:27:35 -07:00
svm.h
swiotlb.h x86: enable DMA CMA with swiotlb 2014-06-04 16:53:57 -07:00
switch_to.h x86, asmlinkage: Make 32bit/64bit __switch_to visible 2013-08-06 14:18:30 -07:00
sync_bitops.h arch,x86: Convert smp_mb__*() 2014-04-18 14:20:46 +02:00
sys_ia32.h unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
syscall.h audit: use uapi/linux/audit.h for AUDIT_ARCH declarations 2014-03-20 10:11:59 -04:00
syscalls.h x86, asmlinkage: Make various syscalls asmlinkage 2013-08-06 14:18:33 -07:00
sysfb.h x86: sysfb: move EFI quirks from efifb to sysfb 2013-08-02 16:17:47 -07:00
tce.h
thread_info.h sched/idle, x86: Switch from TS_POLLING to TIF_POLLING_NRFLAG 2014-05-08 09:16:56 +02:00
time.h
timer.h Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 12:03:57 -08:00
timex.h
tlb.h x86-32: Fix possible incomplete TLB invalidate with PAE pagetables 2013-04-12 16:56:47 -07:00
tlbflush.h mm, x86: Account for TLB flushes only when debugging 2014-01-25 09:10:41 +01:00
topology.h PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
trace_clock.h
traps.h Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-06-12 19:18:49 -07:00
tsc.h x86, tsc: Fallback to normal calibration if fast MSR calibration fails 2014-02-19 17:12:24 +01:00
uaccess.h Merge branch 'x86/mpx' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-01-20 14:46:32 -08:00
uaccess_32.h x86: Unify copy_to_user() and add size checking to it 2013-10-26 12:27:37 +02:00
uaccess_64.h x86, sparse: Do not force removal of __user when calling copy_to/from_user_nocheck() 2014-01-04 13:54:50 -08:00
unaligned.h
unistd.h sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
uprobes.h uprobes/x86: Rename arch_uprobe->def to ->defparam, minor comment updates 2014-06-05 16:21:57 +02:00
user.h
user32.h
user_32.h
user_64.h
vdso.h x86, mm: Improve _install_special_mapping and fix x86 vdso naming 2014-05-20 11:38:42 -07:00
vga.h
vgtod.h x86, vdso: Add 32 bit VDSO time support for 64 bit kernel 2014-03-18 12:52:41 -07:00
virtext.h
vm86.h
vmx.h KVM: x86: Intel MPX vmx and msr handle 2014-02-24 12:14:00 +01:00
vsyscall.h
vvar.h x86, vdso: Move the vvar and hpet mappings next to the 64-bit vDSO 2014-05-05 13:19:01 -07:00
word-at-a-time.h
x2apic.h
x86_init.h PCI: Drop "irq" param from *_restore_msi_irqs() 2013-12-13 08:44:30 -07:00
xcr.h
xor.h x86/xor: Add alternative SSE implementation only prefetching once per 64-byte line 2013-01-25 09:23:50 +01:00
xor_32.h x86/xor: Add alternative SSE implementation only prefetching once per 64-byte line 2013-01-25 09:23:50 +01:00
xor_64.h x86/xor: Add alternative SSE implementation only prefetching once per 64-byte line 2013-01-25 09:23:50 +01:00
xor_avx.h crypto: xor - Check for osxsave as well as avx in crypto/xor 2013-08-21 21:08:35 +10:00
xsave.h Merge tag 'kvm-3.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2014-04-02 14:50:10 -07:00