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Christophe Leroy 902e06eb86 powerpc/32: Change the stack protector canary value per task 
Partially copied from commit df0698be14 ("ARM: stack protector:
change the canary value per task")

A new random value for the canary is stored in the task struct whenever
a new task is forked.  This is meant to allow for different canary values
per task.  On powerpc, GCC expects the canary value to be found in a global
variable called __stack_chk_guard.  So this variable has to be updated
with the value stored in the task struct whenever a task switch occurs.

Because the variable GCC expects is global, this cannot work on SMP
unfortunately.  So, on SMP, the same initial canary value is kept
throughout, making this feature a bit less effective although it is still
useful.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-23 22:57:20 +11:00
..
vdso32
powerpc/vdso: Fix build rules to rebuild vdsos correctly
2016-08-10 23:04:12 +10:00
vdso64
powerpc/vdso64: Use double word compare on pointers
2016-09-29 15:17:57 +10:00
.gitignore
…
align.c
powerpc: Move cpu_has_feature() to a separate file
2016-08-01 11:15:03 +10:00
asm-offsets.c
powerpc/32: Change the stack protector canary value per task
2016-11-23 22:57:20 +11:00
audit.c
…
btext.c
powerpc/mm: Use a helper for finding pte bits mapping I/O area
2016-05-01 18:32:32 +10:00
cacheinfo.c
powerpc: Fix missing L2 cache size in /sys/devices/system/cpu
2015-04-11 20:49:28 +10:00
cacheinfo.h
…
compat_audit.c
…
cpu_setup_6xx.S
powerpc: Various typo fixes
2016-06-14 13:58:26 +10:00
cpu_setup_44x.S
…
cpu_setup_fsl_booke.S
powerpc/cache: add cache flush operation for various e500
2016-03-04 23:44:51 -06:00
cpu_setup_pa6t.S
…
cpu_setup_power.S
powerpc/irq: Add support for HV virtualization interrupts
2016-07-17 16:42:44 +10:00
cpu_setup_ppc970.S
…
cputable.c
powerpc/8xx: add dedicated machine check handler
2016-09-25 02:38:55 -05:00
crash_dump.c
powerpc: Remove superfluous bootmem includes
2014-11-10 09:59:26 +11:00
crash.c
powerpc/crash: Rearrange loop condition to avoid out of bounds array access
2016-07-14 20:26:22 +10:00
dbell.c
powerpc/powernv: Fixes for hypervisor doorbell handling
2015-03-20 14:51:53 +11:00
dma-iommu.c
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
dma-swiotlb.c
powerpc/iommu: Support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask
2015-07-13 10:10:55 +10:00
dma.c
dma-mapping: use unsigned long for dma_attrs
2016-08-04 08:50:07 -04:00
eeh_cache.c
powerpc/eeh: Fix pr_debug()s in eeh_cache.c
2016-07-08 22:09:50 +10:00
eeh_dev.c
powerpc/pci: Delay populating pdn
2016-06-21 15:30:56 +10:00
eeh_driver.c
powerpc/eeh: Refactor EEH PE reset functions
2016-11-22 11:57:08 +11:00
eeh_event.c
powerpc/pci: Always print PHB and PE numbers as hexadecimal
2016-11-22 11:57:07 +11:00
eeh_pe.c
powerpc/pci: Always print PHB and PE numbers as hexadecimal
2016-11-22 11:57:07 +11:00
eeh_sysfs.c
powerpc/eeh: Fix PE state format
2014-11-27 09:32:58 +11:00
eeh.c
powerpc/eeh: Refactor EEH PE reset functions
2016-11-22 11:57:08 +11:00
entry_32.S
powerpc/32: Change the stack protector canary value per task
2016-11-23 22:57:20 +11:00
entry_64.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
epapr_hcalls.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
epapr_paravirt.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2014-06-10 18:54:22 -07:00
exceptions-64e.S
powerpc32: provide VIRT_CPU_ACCOUNTING
2016-07-09 01:43:50 -05:00
exceptions-64s.S
powerpc/64s: Reduce exception alignment
2016-11-14 11:11:51 +11:00
fadump.c
Merge branch 'akpm' (patches from Andrew)
2016-10-07 21:38:00 -07:00
firmware.c
…
fpu.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
fsl_booke_entry_mapping.S
powerpc/fsl: Force coherent memory on e500mc derivatives
2015-08-07 23:00:01 -05:00
ftrace.c
ftrace: Add return address pointer to ftrace_ret_stack
2016-08-24 12:15:14 +02:00
head_8xx.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
head_32.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
head_40x.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
head_44x.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
head_64.S
powerpc/64: Add an option to force run-at-load to test relocation
2016-11-14 11:11:51 +11:00
head_booke.h
powerpc: Fix interrupt range check on debug exception
2013-05-02 10:31:01 +10:00
head_fsl_booke.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
hw_breakpoint.c
perf/powerpc: Don't call perf_event_disable() from atomic context
2016-10-28 11:06:25 +02:00
idle_6xx.S
…
idle_book3e.S
powerpc: No need to use dot symbols when branching to a function
2014-04-23 10:05:16 +10:00
idle_book3s.S
powerpc/64: Fix race condition in setting lock bit in idle/wakeup code
2016-10-24 19:29:47 +11:00
idle_e500.S
powerpc/e500mc: Remove dead L2 flushing code in idle_e500.S
2015-06-02 21:37:19 -05:00
idle_power4.S
powerpc: No need to use dot symbols when branching to a function
2014-04-23 10:05:16 +10:00
idle.c
powerpc/idle: Convert use of typedef ctl_table to struct ctl_table
2013-07-01 11:10:35 +10:00
io-workarounds.c
powerpc/mm: Differentiate between hugetlb and THP during page walk
2015-10-12 15:30:09 +11:00
io.c
powerpc/powernv: Add PIO accessors for Power8 LPC bus
2013-08-14 14:58:08 +10:00
iomap.c
powerpc: add io{read,write}64 accessors
2016-05-31 16:41:52 +08:00
iommu.c
powerpc: implement the DMA_ATTR_NO_WARN attribute
2016-10-11 15:06:32 -07:00
irq.c
powerpc: Remove all usages of NO_IRQ
2016-09-20 20:57:12 +10:00
isa-bridge.c
powerpc/mm: Use a helper for finding pte bits mapping I/O area
2016-05-01 18:32:32 +10:00
jump_label.c
jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}
2015-08-03 11:34:12 +02:00
kgdb.c
powerpc: Fix kgdb on little endian ppc64le
2016-02-18 00:03:26 +11:00
kprobes.c
powerpc/kprobes: Invoke handlers directly
2016-11-23 22:56:25 +11:00
kvm_emul.S
…
kvm.c
powerpc: Remove redundant breaks
2015-08-06 15:10:20 +10:00
l2cr_6xx.S
…
legacy_serial.c
powerpc: Remove all usages of NO_IRQ
2016-09-20 20:57:12 +10:00
machine_kexec_32.c
…
machine_kexec_64.c
powerpc/64/kexec: Remove BookE special default_machine_kexec_prepare()
2016-09-23 07:54:18 +10:00
machine_kexec.c
powerpc: Update of_remove_property() call sites to remove null checking
2016-05-11 21:54:04 +10:00
Makefile
powerpc: Initial stack protector (-fstack-protector) support
2016-11-23 22:57:15 +11:00
mce_power.c
powerpc/mm/radix: Fix CONFIG_PPC_MMU_STD_64 typo
2016-05-11 21:53:59 +10:00
mce.c
powerpc/mce: Remove unused but set variable
2016-11-18 22:40:38 +11:00
misc_32.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
misc_64.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
misc.S
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
module_32.c
powerpc/module: Only try to generate the ftrace_caller() stub once
2016-03-07 14:53:53 +11:00
module_64.c
powerpc/module: Add support for R_PPC64_REL32 relocations
2016-11-14 11:11:51 +11:00
module.c
powerpc/sparse: Make a bunch of things static
2016-09-13 17:35:47 +10:00
msi.c
powerpc: Remove MSI-related PCI controller ops from ppc_md
2015-06-02 11:47:45 +10:00
nvram_64.c
powerpc/nvram: Fix an incorrect partition merge
2016-09-20 16:15:42 +10:00
of_platform.c
powerpc/eeh: Do probe on pci_dn
2015-03-24 13:15:52 +11:00
paca.c
powerpc/mm: Convert early cpu/mmu feature check to use the new helpers
2016-08-01 11:15:01 +10:00
pci_32.c
ppc: move exports to definitions
2016-08-07 23:50:09 -04:00
pci_64.c
Merge tag 'powerpc-4.7-5' into next
2016-07-15 14:57:47 +10:00
pci_dn.c
powerpc/pci: Fix build with PCI_IOV=y and EEH=n
2016-07-07 16:33:27 +10:00
pci_of_scan.c
powerpc: Remove all usages of NO_IRQ
2016-09-20 20:57:12 +10:00
pci-common.c
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
pci-hotplug.c
powerpc/pci: Don't scan empty slot
2016-05-11 21:54:26 +10:00
pmc.c
…
ppc32.h
powerpc: switch to generic old sigaction()
2013-02-03 18:16:10 -05:00
ppc_save_regs.S
…
proc_powerpc.c
proc_powerpc: switch to fixed_size_llseek()
2013-06-29 12:57:50 +04:00
process.c
powerpc: Initial stack protector (-fstack-protector) support
2016-11-23 22:57:15 +11:00
prom_init_check.sh
powerpc: Simplify symbol check in prom_init_check.sh
2014-09-25 23:14:46 +10:00
prom_init.c
powerpc: Fix old style declaration GCC warnings
2016-11-18 22:40:38 +11:00
prom_parse.c
powerpc: of_parse_dma_window should take a __be32 *dma_window
2013-08-14 15:33:26 +10:00
prom.c
powerpc/64: Used named initialisers for ibm_pa_features
2016-11-18 23:02:19 +11:00
ptrace32.c
mm: replace access_process_vm() write parameter with gup_flags
2016-10-19 08:31:25 -07:00
ptrace.c
powerpc: tm: Rename transct_(*) to ck(\1)_state
2016-10-04 20:33:16 +11:00
reloc_32.S
powerpc: Don't flush/invalidate the d/icache for an unknown relocation type
2013-07-01 11:10:34 +10:00
reloc_64.S
powerpc: Align p_dyn, p_rela and p_st symbols
2014-03-07 13:50:19 +11:00
rtas_flash.c
powerpc: Fix endianness of flash_block_list in rtas_flash
2014-07-28 11:30:54 +10:00
rtas_pci.c
powerpc: move find_and_init_phbs() to pSeries specific code
2015-04-11 20:49:09 +10:00
rtas-proc.c
powerpc: Various typo fixes
2016-06-14 13:58:26 +10:00
rtas-rtc.c
…
rtas.c
powerpc: Make ppc_md.{halt, restart} __noreturn
2016-07-14 21:12:06 +10:00
rtasd.c
powerpc/pseries: start rtasd before PCI probing
2016-07-08 19:22:15 +10:00
setup_32.c
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
setup_64.c
powerpc/32: Fix crash during static key init
2016-08-10 19:41:58 +10:00
setup-common.c
powerpc: Call chained reset handlers during reset
2016-09-25 00:06:40 -05:00
setup.h
powerpc: Merge 32-bit and 64-bit setup_arch()
2016-07-21 19:17:46 +10:00
signal_32.c
powerpc: tm: Rename transct_(*) to ck(\1)_state
2016-10-04 20:33:16 +11:00
signal_64.c
powerpc: tm: Rename transct_(*) to ck(\1)_state
2016-10-04 20:33:16 +11:00
signal.c
powerpc: signals: Stop using current in signal code
2016-10-04 16:43:07 +11:00
signal.h
powerpc: tm: Rename transct_(*) to ck(\1)_state
2016-10-04 20:33:16 +11:00
smp-tbsync.c
powerpc: Delete non-required instances of include <linux/init.h>
2014-01-15 13:46:44 +11:00
smp.c
powerpc, hotplug: Avoid to touch non-existent cpumasks.
2016-08-22 11:09:33 +10:00
stacktrace.c
powerpc: Implement save_stack_trace_regs() to enable kprobe stack tracing
2016-01-11 14:27:28 +11:00
suspend.c
nosave: consolidate __nosave_{begin,end} in <asm/sections.h>
2014-10-09 22:26:04 -04:00
swsusp_32.S
…
swsusp_64.c
…
swsusp_asm64.S
powerpc: Only save/restore SDR1 if in hypervisor mode
2013-10-31 12:37:29 +11:00
swsusp_booke.S
powerpc/fsl-booke: Use SPRN_SPRGn rather than mfsprg/mtsprg
2014-01-07 19:06:03 -06:00
swsusp.c
powerpc/mm: Abstraction for switch_mmu_context()
2016-05-01 18:33:04 +10:00
sys_ppc32.c
unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE
2013-05-09 13:46:38 -04:00
syscalls.c
powerpc/sparse: Add more assembler prototypes
2016-09-13 17:36:58 +10:00
sysfs.c
powerpc/sparse: make some things static
2016-06-16 22:23:11 +10:00
systbl_chk.c
powerpc: Standardise on NR_syscalls rather than __NR_syscalls.
2015-11-26 22:11:17 +11:00
systbl_chk.sh
powerpc: Standardise on NR_syscalls rather than __NR_syscalls.
2015-11-26 22:11:17 +11:00
systbl.S
powerpc: Add a proper syscall for switching endianness
2015-03-28 22:03:40 +11:00
tau_6xx.c
…
time.c
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
tm.S
powerpc: tm: Rename transct_(*) to ck(\1)_state
2016-10-04 20:33:16 +11:00
trace_clock.c
powerpc/ftrace: add powerpc timebase as a trace clock source
2015-08-06 16:36:23 +10:00
traps.c
powerpc/kprobes: Invoke handlers directly
2016-11-23 22:56:25 +11:00
udbg_16550.c
powerpc: Fix bad NULL pointer check in udbg_uart_getc_poll()
2014-11-12 13:47:20 +11:00
udbg.c
powerpc: Remove the celleb support
2015-04-07 17:15:13 +10:00
uprobes.c
uprobes/powerpc: Kill arch_uprobe->ainsn
2013-11-20 16:31:01 +01:00
vdso.c
powerpc/vdso: Add missing include file
2016-08-09 16:52:00 +10:00
vecemu.c
powerpc: Put FP/VSX and VR state into structures
2013-10-11 17:26:49 +11:00
vector.S
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
vmlinux.lds.S
Merge branch 'akpm' (patches from Andrew)
2016-10-07 21:38:00 -07:00