Milton Miller c3bf529341 powerpc/kexec: Fix memory corruption from unallocated slaves ...

commit 3d2cea732d upstream.

Commit 1fc711f7ff (powerpc/kexec: Fix race
in kexec shutdown) moved the write to signal the cpu had exited the kernel
from before the transition to real mode in kexec_smp_wait to kexec_wait.

Unfornately it missed that kexec_wait is used both by cpus leaving the
kernel and by secondary slave cpus that were not allocated a paca for
what ever reason -- they could be beyond nr_cpus or not described in
the current device tree for whatever reason (for example, kexec-load
was not refreshed after a cpu hotplug operation).  Cpus coming through
that path they will write to paca[NR_CPUS] which is beyond the space
allocated for the paca data and overwrite memory not allocated to pacas
but very likely still real mode accessable).

Move the write back to kexec_smp_wait, which is used only by cpus that
found their paca, but after the transition to real mode.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-06-23 15:24:00 -07:00

..

vdso32

powerpc: Fix segment mapping in vdso32

2009-10-27 16:42:40 +11:00

vdso64

Use macros for .data.page_aligned section.

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

.gitignore

powerpc: Ignore generated vmlinux.lds in git

2008-10-07 14:26:18 +11:00

align.c

powerpc: Handle VSX alignment faults correctly in little-endian mode

2010-01-06 15:03:32 -08:00

asm-offsets.c

powerpc/kexec: Fix race in kexec shutdown

2011-03-23 13:16:57 -07:00

audit.c

…

btext.c

powerpc: Use the common ascii hex helpers

2008-08-20 16:34:57 +10:00

cacheinfo.c

powerpc/cacheinfo: Rename cache_dir per-cpu variable

2009-01-13 14:48:02 +11:00

cacheinfo.h

powerpc: Rewrite sysfs processor cache info code

2009-01-08 16:25:10 +11:00

clock.c

…

compat_audit.c

…

cpu_setup_6xx.S

powerpc: Fix some 6xx/7xxx CPU setup functions

2011-02-17 15:37:06 -08:00

cpu_setup_44x.S

AMCC PPC 460SX redwood SoC platform initial framework

2009-02-14 14:41:29 -05:00

cpu_setup_fsl_booke.S

powerpc/fsl-booke: Enable L1 cache on e500v1/e500v2/e500mc CPUs

2009-06-15 21:45:30 -05:00

cpu_setup_pa6t.S

…

cpu_setup_ppc970.S

powerpc: Use LOAD_REG_IMMEDIATE only for constants on 64-bit

2008-09-15 11:08:35 -07:00

cputable.c

powerpc/oprofile: Add ppc750 CL as supported by oprofile

2009-10-14 16:58:39 +11:00

crash_dump.c

powerpc: Unify opcode definitions and support

2009-02-23 10:48:56 +11:00

crash.c

powerpc: Fix default_machine_crash_shutdown #ifdef botch

2011-04-14 16:53:43 -07:00

dbell.c

powerpc: Add support for using doorbells for SMP IPI

2009-02-23 15:53:03 +11:00

dma-iommu.c

powerpc: Change archdata dma_data to a union

2009-09-24 15:31:43 +10:00

dma-swiotlb.c

powerpc: Handle SWIOTLB mapping error properly

2009-08-28 14:24:11 +10:00

dma.c

powerpc: Rename get_dma_direct_offset get_dma_offset

2009-09-24 15:31:43 +10:00

entry_32.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

entry_64.S

powerpc/perf_event: Fix oops due to perf_event_do_pending call

2010-05-26 14:29:16 -07:00

exceptions-64e.S

powerpc/book3e-64: Remove duplicated #include

2009-09-24 15:31:41 +10:00

exceptions-64s.S

Merge commit 'paulus-perf/master' into next

2009-08-20 11:07:56 +10:00

firmware.c

…

fpu.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

ftrace.c

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

2009-06-20 10:56:46 -07:00

head_8xx.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_32.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_40x.S

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_44x.S

powerpc/mm: Cleanup handling of execute permission

2009-08-27 13:12:51 +10:00

head_64.S

powerpc: Don't use kernel stack with translation off

2010-10-28 21:44:13 -07:00

head_booke.h

powerpc: Use names rather than numbers for SPRGs (v2)

2009-08-20 10:12:27 +10:00

head_fsl_booke.S

powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT

2009-09-02 16:20:41 +10:00

ibmebus.c

powerpc: use dma_map_ops struct

2009-08-28 14:24:10 +10:00

idle_6xx.S

powerpc: Fix for getting CPU number in power_save_ppc32_restore()

2008-09-03 20:53:47 +10:00

idle_e500.S

powerpc: Fix for getting CPU number in power_save_ppc32_restore()

2008-09-03 20:53:47 +10:00

idle_power4.S

…

idle.c

powerpc: ftrace, do not latency trace idle

2008-11-20 10:51:15 -08:00

init_task.c

Use new __init_task_data macro in arch init_task.c files.

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

io.c

ftrace: support for PowerPC

2008-05-23 22:43:11 +02:00

iomap.c

…

iommu.c

powerpc: Change u64/s64 to a long long integer type

2009-01-13 14:47:59 +11:00

irq.c

powerpc/perf_event: Fix oops due to perf_event_do_pending call

2010-05-26 14:29:16 -07:00

isa-bridge.c

…

kgdb.c

powerpc/kgdb: Fix build failure caused by "kgdb.c: unused variable 'acc'"

2009-10-14 16:58:38 +11:00

kprobes.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-01-07 11:31:52 -08:00

l2cr_6xx.S

…

legacy_serial.c

powerpc/powermac: Fixup default serial port device for pmac_zilog

2008-07-28 16:30:53 +10:00

lparcfg.c

powerpc/pseries: Fix to handle slb resize across migration

2009-09-02 16:19:01 +10:00

machine_kexec_32.c

kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE

2008-08-15 08:35:42 -07:00

machine_kexec_64.c

powerpc/kexec: Fix race in kexec shutdown

2011-03-23 13:16:57 -07:00

machine_kexec.c

powerpc: Allow mem=x cmdline to work with 4G+

2009-05-15 16:43:41 +10:00

Makefile

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

misc_32.S

powerpc: Fix __flush_icache_range on 44x

2009-08-27 13:12:52 +10:00

misc_64.S

powerpc/kexec: Fix memory corruption from unallocated slaves

2011-06-23 15:24:00 -07:00

misc.S

powerpc: Use LOAD_REG_IMMEDIATE only for constants on 64-bit

2008-09-15 11:08:35 -07:00

module_32.c

powerpc/ppc32: ftrace, dynamic ftrace to handle modules

2008-11-20 10:52:53 -08:00

module_64.c

powerpc: Unify opcode definitions and support

2009-02-23 10:48:56 +11:00

module.c

module: cleanup FIXME comments about trimming exception table entries.

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

mpc7450-pmu.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

msi.c

powerpc/PCI: include pci.h in powerpc MSI implementation

2009-03-25 08:54:29 -07:00

nvram_64.c

…

of_device.c

powerpc/of: Fix usage of dev_set_name() in of_device_alloc()

2009-06-26 16:55:35 +10:00

of_platform.c

powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan()

2009-09-02 15:45:53 +10:00

paca.c

powerpc/kexec: Fix race in kexec shutdown

2011-03-23 13:16:57 -07:00

pci_32.c

powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan()

2009-09-02 15:45:53 +10:00

pci_64.c

powerpc: Fix compile errors found by new ppc64e_defconfig

2009-10-27 16:42:41 +11:00

pci_dn.c

powerpc/pci: Move pseries code into pseries platform specific area

2009-05-21 15:44:24 +10:00

pci_of_scan.c

Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

2009-09-16 07:49:54 -07:00

pci-common.c

PCI/cardbus: Add a fixup hook and fix powerpc

2010-01-22 15:18:26 -08:00

perf_callchain.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

perf_event.c

perf, powerpc: Handle events that raise an exception without overflowing

2011-03-23 13:16:52 -07:00

pmc.c

…

power4-pmu.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

power5-pmu.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

power5+-pmu.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

power6-pmu.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

power7-pmu.c

perf: Do the big rename: Performance Counters -> Performance Events

2009-09-21 14:28:04 +02:00

ppc32.h

powerpc: Add VSX context save/restore, ptrace and signal support

2008-07-01 11:28:50 +10:00

ppc970-pmu.c

powerpc/perf: Fix sampling enable for PPC970

2010-11-22 10:47:30 -08:00

ppc_ksyms.c

powerpc: Export cacheable_memzero as its now used in a driver

2009-01-08 16:25:17 +11:00

ppc_save_regs.S

powerpc: Prepare xmon_save_regs for use with kdump

2008-12-23 15:13:28 +11:00

proc_ppc64.c

…

process.c

powerpc: TIF_ABI_PENDING bit removal

2010-02-09 04:51:02 -08:00

prom_init_check.sh

powerpc: Print linux_banner in prom_init

2009-03-11 17:11:33 +11:00

prom_init.c

powerpc: Fix ibm,client-architecture-support printout

2009-09-24 15:31:47 +10:00

prom_parse.c

powerpc: Fix of_node_put() exit path in of_irq_map_one()

2009-04-20 12:18:43 -06:00

prom.c

powerpc: Shield code specific to 64-bit server processors

2009-06-09 16:47:38 +10:00

ptrace32.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

ptrace.c

powerpc: Fix booke user_disable_single_step()

2009-07-15 17:41:45 +10:00

reloc_64.S

powerpc: Make the 64-bit kernel as a position-independent executable

2008-09-15 11:08:38 -07:00

rtas_flash.c

powerpc: rtas_flash needs to use rtas_data_buf

2011-03-23 13:16:58 -07:00

rtas_pci.c

powerpc/pci: Clean up direct access to sysdata by RTAS

2009-05-21 15:44:23 +10:00

rtas-proc.c

…

rtas-rtc.c

…

rtas.c

powerpc/pseries: Fix to handle slb resize across migration

2009-09-02 16:19:01 +10:00

setup_32.c

powerpc/nvram: Enable use Generic NVRAM driver for different size chips

2009-09-11 16:02:11 +10:00

setup_64.c

powerpc: Use more accurate limit for first segment memory allocations

2011-03-14 14:29:56 -07:00

setup-common.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus

2009-09-23 18:14:11 -07:00

setup.h

…

signal_32.c

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

signal_64.c

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

signal.c

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

signal.h

powerpc: Sanitize stack pointer in signal handling code

2009-03-27 16:58:24 +11:00

smp-tbsync.c

powerpc: Silence software timebase sync

2008-11-05 22:08:28 +11:00

smp.c

cpumask: Use accessors for cpu_*_mask: powerpc

2009-09-24 09:34:48 +09:30

softemu8xx.c

Remove asm/a.out.h files for all architectures without a.out support.

2008-09-06 19:30:24 +01:00

stacktrace.c

powerpc: Removed duplicated include in stacktrace.c

2008-07-28 16:30:47 +10:00

suspend.c

PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures

2008-07-24 10:47:21 -07:00

swsusp_32.S

powerpc/mm: Introduce MMU features

2008-12-21 14:21:16 +11:00

swsusp_64.c

…

swsusp_asm64.S

powerpc: Fix 64-bit hibernation with 64k pages

2008-10-07 14:26:20 +11:00

swsusp.c

powerpc/mm: Split mmu_context handling

2008-12-21 14:21:15 +11:00

sys_ppc32.c

headers: utsname.h redux

2009-09-23 18:13:10 -07:00

syscalls.c

untangle the do_mremap() mess

2010-01-18 10:19:11 -08:00

sysfs.c

powerpc: Fix bug where perf_counters breaks oprofile

2009-09-11 11:27:58 +10:00

systbl_chk.c

…

systbl_chk.sh

…

systbl.S

…

tau_6xx.c

on_each_cpu(): kill unused 'retry' parameter

2008-06-26 11:24:38 +02:00

time.c

timekeeping: Fix clock_gettime vsyscall time warp

2010-08-13 13:20:13 -07:00

traps.c

powerpc: Add PTRACE_SINGLEBLOCK support

2009-06-09 13:29:25 +10:00

udbg_16550.c

trivial: fix typo "for for" in multiple files

2009-09-21 15:14:54 +02:00

udbg.c

powerpc/udbg: Fix lost byte during console handover; change LFCR to CRLF

2009-03-11 17:11:34 +11:00

vdso.c

powerpc: Align vDSO base address

2009-10-27 16:42:40 +11:00

vecemu.c

…

vector.S

powerpc: Fix usage of 64-bit instruction in 32-bit altivec code

2009-12-18 14:04:35 -08:00

vio.c

powerpc: Change archdata dma_data to a union

2009-09-24 15:31:43 +10:00

vmlinux.lds.S

module: handle ppc64 relocating kcrctabs when CONFIG_RELOCATABLE=y

2010-01-18 10:19:51 -08:00