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c05b8c4474
linux/arch/powerpc/include/asm
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Naveen N. Rao c05b8c4474 powerpc/kprobes: Skip livepatch_handler() for jprobes 
ftrace_caller() depends on a modified regs->nip to detect if a certain
function has been livepatched. However, with KPROBES_ON_FTRACE, it is
possible for regs->nip to have been modified by the kprobes pre_handler
(jprobes, for instance). In this case, we do not want to invoke the
livepatch_handler so as not to consume the livepatch stack.

To distinguish between the two (kprobes and livepatch), we check if
there is an active kprobe on the current function. If there is, then we
know for sure that it must have modified the NIP as we don't support
livepatching a kprobe'd function. In this case, we simply skip the
livepatch_handler and branch to the new NIP. Otherwise, the
livepatch_handler is invoked.

Fixes: ead514d5fb ("powerpc/kprobes: Add support for KPROBES_ON_FTRACE")
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-06-16 19:49:43 +10:00
..
book3s powerpc/mm/4k: Limit 4k page size config to 64TB virtual address space 2017-06-08 20:42:56 +10:00
nohash powerpc/mm/nohash: MM_SLICE is only used by book3s 64 2017-03-31 23:09:47 +11:00
8xx_immap.h
accounting.h sched/cputime, powerpc: Prepare accounting structure for cputime flush on tick 2017-01-14 09:54:12 +01:00
agp.h
archrandom.h
asm-compat.h
asm-offsets.h
asm-prototypes.h powerpc: Fix missing CRCs, add more asm-prototypes.h declarations 2017-03-21 22:09:26 +11:00
async_tx.h
atomic.h
backlight.h
barrier.h
bitops.h powerpc: Add more PPC bit conversion macros 2017-04-06 19:58:53 +10:00
bootx.h
btext.h
bug.h powerpc/debug: Add missing warn flag to WARN_ON's non-builtin path 2017-06-16 16:10:37 +10:00
bugs.h
cache.h powerpc: Add new cache geometry aux vectors 2017-02-06 19:46:04 +11:00
cacheflush.h
cell-pmu.h
cell-regs.h
checksum.h powerpc/64: Fix checksum folding in csum_add() 2017-03-04 23:07:17 +11:00
cmpxchg.h powerpc: Fix __cmpxchg() to take a volatile ptr again 2016-11-25 14:07:50 +11:00
code-patching.h powerpc: Introduce a new helper to obtain function entry points 2017-04-24 19:07:58 +10:00
compat.h
context_tracking.h
copro.h
cpm1.h powerpc/8xx: Adding support of IRQ in MPC8xx GPIO 2017-05-02 22:35:00 -05:00
cpm2.h
cpm.h
cpu_has_feature.h powerpc/64s: Support new device tree binding for discovering CPU features 2017-05-09 23:42:55 +10:00
cpufeature.h
cpuidle.h powerpc/64s: Idle POWER8 avoid full state loss recovery where possible 2017-04-23 20:32:12 +10:00
cputable.h powerpc/64: Reclaim CPU_FTR_SUBCORE 2017-06-01 19:56:28 +10:00
cputhreads.h
cputime.h sched/cputime: Remove generic asm headers 2017-02-01 09:14:07 +01:00
current.h
dbdma.h
dbell.h powerpc/powernv: POWER9 support for msgsnd/doorbell IPI 2017-04-13 23:34:34 +10:00
dcr-generic.h
dcr-mmio.h
dcr-native.h
dcr-regs.h
dcr.h
debug.h powerpc: Create asm/debugfs.h and move powerpc_debugfs_root there 2017-04-11 07:46:03 +10:00
debugfs.h powerpc: Create asm/debugfs.h and move powerpc_debugfs_root there 2017-04-11 07:46:03 +10:00
delay.h
device.h treewide: Move dma_ops from struct dev_archdata into struct device 2017-01-24 12:23:35 -05:00
disassemble.h KVM: PPC: Book3S: Add MMIO emulation for FP and VSX instructions 2017-04-20 11:36:41 +10:00
dma-mapping.h treewide: Consolidate get_dma_ops() implementations 2017-01-24 12:23:35 -05:00
dma.h
dt_cpu_ftrs.h powerpc/64s: Support new device tree binding for discovering CPU features 2017-05-09 23:42:55 +10:00
edac.h
eeh_event.h
eeh.h
ehv_pic.h
elf.h powerpc/64: Fix L1D cache shape vector reporting L1I values 2017-03-06 21:51:32 +11:00
emergency-restart.h
emulated_ops.h
epapr_hcalls.h
exception-64e.h
exception-64s.h powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
exec.h
extable.h powerpc: switch to extable.h 2017-03-28 18:23:54 -04:00
fadump.h powerpc/fadump: remove dependency with CONFIG_KEXEC 2017-05-08 17:15:11 -07:00
fb.h
feature-fixups.h powerpc/64s: Simplify POWER9 DD1 idle workaround code 2017-04-23 20:32:23 +10:00
firmware.h powerpc/pseries: Add hypercall wrappers for hash page table resizing 2017-02-09 21:45:48 +11:00
fixmap.h
floppy.h
fs_pd.h
fsl_85xx_cache_sram.h
fsl_gtm.h
fsl_hcalls.h scripts/spelling.txt: add "partiton" pattern and fix typo instances 2017-02-27 18:43:46 -08:00
fsl_lbc.h
fsl_pamu_stash.h
fsl_pm.h
ftrace.h
futex.h
grackle.h
hardirq.h
head-64.h powerpc/kprobes: Blacklist common exception handlers 2017-04-23 20:32:26 +10:00
heathrow.h
highmem.h
hmi.h
hugetlb.h powerpc/mm: Fix little-endian 4K hugetlb 2017-01-18 11:58:50 +11:00
hvcall.h powerpc/pseries: Move struct hcall_stats to hvCall_inst.c 2017-03-20 19:02:49 +11:00
hvconsole.h
hvcserver.h
hvsi.h
hw_breakpoint.h
hw_irq.h
hydra.h
i8259.h
ibmebus.h
icswx.h
ide.h
ima.h powerpc: ima: send the kexec buffer to the next kernel 2016-12-20 09:48:44 -08:00
immap_cpm2.h
io_event_irq.h
io-defs.h
io-workarounds.h
io.h powerpc/mm: Wire up ioremap_cache() 2017-04-21 21:08:47 +10:00
iommu.h KVM: PPC: iommu: Unify TCE checking 2017-04-20 11:39:21 +10:00
ipic.h
irq_work.h
irq.h
irqflags.h
isa-bridge.h powerpc: Add support for non-PCI ISA bridges 2017-01-31 13:54:17 +11:00
jump_label.h
Kbuild
kdebug.h
kdump.h
kexec.h powerpc: ima: send the kexec buffer to the next kernel 2016-12-20 09:48:44 -08:00
keylargo.h
kgdb.h
kmap_types.h
kprobes.h powerpc/kprobes: Skip livepatch_handler() for jprobes 2017-06-16 19:49:43 +10:00
kvm_asm.h KVM: PPC: Book3S HV: Enable hypervisor virtualization interrupts while in guest 2016-11-24 09:24:23 +11:00
kvm_book3s_32.h
kvm_book3s_64.h powerpc/pseries: Skip using reserved virtual address range 2017-04-01 21:12:27 +11:00
kvm_book3s_asm.h KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller 2017-04-27 21:37:29 +10:00
kvm_book3s.h KVM: PPC: Book3S HV: Enable radix guest support 2017-01-31 19:11:52 +11:00
kvm_booke_hv_asm.h
kvm_booke.h
kvm_fpu.h
kvm_host.h Merge remote-tracking branch 'remotes/powerpc/topic/xive' into kvm-ppc-next 2017-04-28 08:23:16 +10:00
kvm_para.h
kvm_ppc.h * ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU 2017-05-08 12:37:56 -07:00
libata-portmap.h
linkage.h
livepatch.h powerpc/livepatch: Remove klp_write_module_reloc() stub 2016-12-19 11:15:25 +01:00
local.h
lppaca.h
lv1call.h
machdep.h powerpc/powernv: Override pcibios_default_alignment() to force PCI devices to be page aligned 2017-04-19 12:51:26 -05:00
macio.h
mc146818rtc.h
mce.h powerpc/book3s: Print task info if we take a machine check in user mode 2017-04-03 16:12:00 +10:00
mediabay.h
mm-arch-hooks.h
mman.h
mmu_context.h powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
mmu-8xx.h powerpc/8xx: Implement support of hugepages 2016-12-09 22:49:07 -06:00
mmu-40x.h
mmu-44x.h
mmu-book3e.h powerpc/mm/nohash: MM_SLICE is only used by book3s 64 2017-03-31 23:09:47 +11:00
mmu.h powerpc/mm/hash: Support 68 bit VA 2017-03-31 23:10:00 +11:00
mmzone.h
module.h powerpc/modules: If mprofile-kernel is enabled add it to vermagic 2017-05-15 19:31:38 +10:00
mpc5xxx.h
mpc6xx.h
mpc52xx_psc.h
mpc52xx.h
mpc85xx.h
mpc5121.h
mpc8260.h
mpic_msgr.h
mpic_timer.h
mpic.h
msi_bitmap.h
nmi.h
nvram.h
ohare.h
opal-api.h Merge branch 'topic/xive' (early part) into next 2017-04-12 22:31:37 +10:00
opal.h Merge branch 'topic/xive' (early part) into next 2017-04-12 22:31:37 +10:00
oprofile_impl.h
paca.h powerpc/64s: Dedicated system reset interrupt stack 2017-04-28 21:02:25 +10:00
page_32.h
page_64.h powerpc/mm/slice: Move slice_mask struct definition to slice.c 2017-03-31 23:09:56 +11:00
page.h powerpc/mm: Fix virt_addr_valid() etc. on 64-bit hash 2017-05-19 13:04:35 +10:00
parport.h
pasemi_dma.h
pci-bridge.h powerpc: Move isa bridge definitions to separate include 2017-01-31 13:54:17 +11:00
pci.h PCI: Add arch_can_pci_mmap_io() on architectures which can mmap() I/O space 2017-04-18 13:02:26 -05:00
percpu.h
perf_event_fsl_emb.h
perf_event_server.h powerpc/perf: Support to export MMCRA[TEC*] field to userspace 2017-04-19 20:00:22 +10:00
perf_event.h
pgalloc.h
pgtable-be-types.h powerpc/mm: Fix little-endian 4K hugetlb 2017-01-18 11:58:50 +11:00
pgtable-types.h powerpc/mm: Fix little-endian 4K hugetlb 2017-01-18 11:58:50 +11:00
pgtable.h powerpc: port 64 bits pgtable_cache to 32 bits 2016-12-09 22:48:01 -06:00
plpar_wrappers.h powerpc/pseries: Add hypercall wrappers for hash page table resizing 2017-02-09 21:45:48 +11:00
pmac_feature.h
pmac_low_i2c.h
pmac_pfunc.h
pmc.h
pmi.h
pnv-pci.h drivers/pci/hotplug: Mask PDC interrupt if required 2017-02-15 20:02:43 +11:00
powernv.h powerpc/powernv: Introduce address translation services for Nvlink2 2017-04-04 13:27:26 +10:00
ppc4xx_ocm.h
ppc4xx.h
ppc_asm.h powerpc/32: Remove FIX_SRR1 2017-01-26 17:49:32 -06:00
ppc-opcode.h * ARM: HYP mode stub supports kexec/kdump on 32-bit; improved PMU 2017-05-08 12:37:56 -07:00
ppc-pci.h
probes.h
processor.h powerpc/mm/4k: Limit 4k page size config to 64TB virtual address space 2017-06-08 20:42:56 +10:00
prom.h powerpc: Update to new option-vector-5 format for CAS 2017-03-06 21:44:09 +11:00
ps3.h treewide: Consolidate get_dma_ops() implementations 2017-01-24 12:23:35 -05:00
ps3av.h
ps3gpu.h
ps3stor.h
pte-common.h
ptrace.h
reg_8xx.h powerpc/8xx: Perf events on PPC 8xx 2017-01-26 17:49:34 -06:00
reg_a2.h
reg_booke.h
reg_fsl_emb.h
reg.h powerpc/64s: Support new device tree binding for discovering CPU features 2017-05-09 23:42:55 +10:00
rheap.h
rio.h
rtas.h powerpc/pseries: Implement indexed-count hotplug memory add 2017-02-17 17:57:30 +11:00
runlatch.h
scom.h
seccomp.h
sections.h powerpc/kprobes: Blacklist exception handlers 2017-04-23 20:32:25 +10:00
serial.h
setjmp.h
setup.h
sfp-machine.h
shmparam.h
signal.h
smp.h powerpc: Add struct smp_ops_t.cause_nmi_ipi operation 2017-04-28 21:02:25 +10:00
smu.h
sparsemem.h powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y 2017-02-15 19:58:39 +11:00
spinlock_types.h
spinlock.h locking/core, powerpc: Implement vcpu_is_preempted(cpu) 2016-11-22 12:48:06 +01:00
spu_csa.h
spu_info.h
spu_priv1.h
spu.h
sstep.h
string.h
swab.h
swiotlb.h treewide: Constify most dma_map_ops structures 2017-01-24 12:23:35 -05:00
switch_to.h
synch.h
syscall.h
syscalls.h powerpc/tracing: Allow tracing of mmap syscalls 2017-04-12 22:32:43 +10:00
systbl.h powerpc: Wire up statx() syscall 2017-03-16 20:45:53 +11:00
tce.h
termios.h
thread_info.h powerpc updates for 4.12 part 1. 2017-05-05 11:36:44 -07:00
time.h
timex.h
tlb.h mm: add tlb_remove_check_page_size_change to track page size change 2016-12-12 18:55:07 -08:00
tlbflush.h
tm.h
topology.h powerpc/numa: Fix percpu allocations to be NUMA aware 2017-06-06 21:19:46 +10:00
trace_clock.h
trace.h tracing: Have the reg function allow to fail 2016-12-09 09:13:30 -05:00
tsi108_irq.h
tsi108_pci.h
tsi108.h
types.h
uaccess.h powerpc: get rid of zeroing, switch to RAW_COPY_USER 2017-04-06 15:08:42 -04:00
udbg.h
uic.h
unaligned.h
uninorth.h
unistd.h powerpc: Wire up statx() syscall 2017-03-16 20:45:53 +11:00
uprobes.h
user.h
vdso_datapage.h
vdso.h
vga.h
vio.h
word-at-a-time.h
xics.h powerpc: Change the doorbell IPI calling convention 2017-04-13 23:34:33 +10:00
xilinx_intc.h powerpc/virtex: Use generic xilinx irqchip driver 2016-11-29 09:14:50 +00:00
xilinx_pci.h
xive-regs.h powerpc/xive: Native exploitation of the XIVE interrupt controller 2017-04-10 21:41:34 +10:00
xive.h powerpc/xive: Fix offset for store EOI MMIOs 2017-06-15 23:29:39 +10:00
xmon.h powerpc/xive: Native exploitation of the XIVE interrupt controller 2017-04-10 21:41:34 +10:00
xor.h