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Anton Blanchard 808be31426 powerpc: do_notify_resume can be called with bad thread_info flags argument 
Back in 7230c56441 ("powerpc: Rework lazy-interrupt handling") we
added a call out to restore_interrupts() (written in c) before calling
do_notify_resume:

        bl      restore_interrupts
        addi    r3,r1,STACK_FRAME_OVERHEAD
        bl      do_notify_resume

Unfortunately do_notify_resume takes two arguments, the second one
being the thread_info flags:

void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)

We do populate r4 (the second argument) earlier, but
restore_interrupts() is free to muck it up all it wants. My guess is
the gcc compiler gods shone down on us and its register allocator
never used r4. Sometimes, rarely, luck is on our side.

LLVM on the other hand did trample r4.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 		2014-10-31 16:52:46 +11:00
..
vdso32 powerpc/booke64: Use SPRG7 for VDSO 2014-03-19 19:57:14 -05:00
vdso64 powerpc/booke64: Use SPRG7 for VDSO 2014-03-19 19:57:14 -05:00
.gitignore
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Makefile powerpc: Separate ppc32 symbol exports into ppc_ksyms_32.c 2014-09-25 23:14:40 +10:00
align.c KVM: PPC: BOOK3S: Remove open coded make_dsisr in alignment handler 2014-05-30 14:26:25 +02:00
asm-offsets.c Here are the PPC and ARM changes for KVM, which I separated because 2014-08-07 11:35:30 -07:00
audit.c
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btext.c powerpc/btext: Fix CONFIG_PPC_EARLY_DEBUG_BOOTX on ppc32 2013-08-27 16:01:23 +10:00
cacheinfo.c powerpc/pseries: Update dynamic cache nodes for suspend/resume operation 2014-03-07 15:54:49 +11:00
cacheinfo.h
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compat_audit.c
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cpu_setup_6xx.S
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cpu_setup_44x.S
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cpu_setup_fsl_booke.S powerpc/booke: Restrict SPE exception handlers to e200/e500 cores 2014-09-22 10:11:31 +02:00
cpu_setup_pa6t.S
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cpu_setup_power.S powerpc/powernv: Enable POWER8 doorbell IPIs 2014-06-11 17:05:12 +10:00
cpu_setup_ppc970.S
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cputable.c powerpc/booke: Restrict SPE exception handlers to e200/e500 cores 2014-09-22 10:11:31 +02:00
crash.c arch,powerpc: Convert smp_mb__*() 2014-04-18 14:20:41 +02:00
crash_dump.c powerpc/kdump: crash_dump.c needs to include io.h 2014-10-03 18:03:35 +10:00
dbell.c powerpc: Add accounting for Doorbell interrupts 2013-04-18 15:59:55 +10:00
dma-iommu.c powerpc/iommu: Update the generic code to use dynamic iommu page sizes 2013-12-30 14:17:19 +11:00
dma-swiotlb.c powerpc/64: Limit ZONE_DMA32 to 4GiB in swiotlb_detect_4g() 2014-09-03 17:58:22 -05:00
dma.c powerpc: Only do dynamic DMA zone limits on platforms that need it 2014-10-17 09:21:44 +11:00
eeh.c powerpc/eeh: Don't collect logs on PE with blocked config space 2014-10-15 11:27:21 +11:00
eeh_cache.c powerpc/eeh: Replace pr_warning() with pr_warn() 2014-08-05 15:41:34 +10:00
eeh_dev.c powerpc/eeh: Replace pr_warning() with pr_warn() 2014-08-05 15:41:34 +10:00
eeh_driver.c powerpc/eeh: Rename flag EEH_PE_RESET to EEH_PE_CFG_BLOCKED 2014-10-15 11:27:18 +11:00
eeh_event.c powerpc/powernv: Fix killed EEH event 2014-06-11 17:04:33 +10:00
eeh_pe.c powerpc/eeh: Block PCI config access upon frozen PE 2014-10-15 11:27:20 +11:00
eeh_sysfs.c powerpc/eeh: Show hex prefix for PE state sysfs 2014-10-01 22:23:34 +10:00
entry_32.S powerpc/32bit:Store temporary result in r0 instead of r8 2013-06-01 08:29:27 +10:00
entry_64.S powerpc: do_notify_resume can be called with bad thread_info flags argument 2014-10-31 16:52:46 +11:00
epapr_hcalls.S powerpc: Add paravirt idle loop for 64-bit Book-E 2013-03-13 14:19:36 -05:00
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 powerpc/booke: Revert SPE/AltiVec common defines for interrupt numbers 2014-09-22 10:11:31 +02:00
exceptions-64s.S powerpc/book3s: Don't clear MSR_RI in hmi handler. 2014-10-10 17:25:25 +11:00
fadump.c powerpc/fadump: Fix endianess issues in firmware assisted dump handling 2014-10-30 16:52:46 +11:00
firmware.c
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fpu.S powerpc: Don't corrupt transactional state when using FP/VMX in kernel 2014-01-15 13:59:11 +11:00
fsl_booke_entry_mapping.S powerpc: enable the relocatable support for the fsl booke 32bit kernel 2014-01-09 17:52:16 -06:00
ftrace.c powerpc/ftrace: Add call to ftrace_graph_is_dead() in function graph code 2014-07-18 13:56:56 -04:00
head_8xx.S powerpc/8xx: Duplicate two insns instead of branching 2014-09-04 19:28:56 -05:00
head_32.S powerpc: Call do_page_fault() with interrupts off 2012-03-09 10:55:08 +11:00
head_40x.S powerpc: Remove check for CONFIG_SERIAL_TEXT_DEBUG 2014-06-11 16:31:21 +10:00
head_44x.S powerpc/ppc476: Disable BTAC 2014-08-13 15:13:42 +10:00
head_64.S Merge remote-tracking branch 'scott/next' into next 2014-08-05 14:13:41 +10:00
head_booke.h powerpc: Fix interrupt range check on debug exception 2013-05-02 10:31:01 +10:00
head_fsl_booke.S powerpc/booke: Revert SPE/AltiVec common defines for interrupt numbers 2014-09-22 10:11:31 +02:00
hw_breakpoint.c powerpc: Make a bunch of things static 2014-09-25 23:14:41 +10:00
ibmebus.c powerpc: make of_device_ids const 2014-09-25 23:14:46 +10:00
idle.c powerpc/idle: Convert use of typedef ctl_table to struct ctl_table 2013-07-01 11:10:35 +10:00
idle_6xx.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
idle_book3e.S powerpc: No need to use dot symbols when branching to a function 2014-04-23 10:05:16 +10:00
idle_e500.S powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly 2012-07-11 14:18:22 +10:00
idle_power4.S powerpc: No need to use dot symbols when branching to a function 2014-04-23 10:05:16 +10:00
idle_power7.S powerpc/powernv: Don't call generic code on offline cpus 2014-09-25 23:14:50 +10:00
io-workarounds.c powerpc: Better split CONFIG_PPC_INDIRECT_PIO and CONFIG_PPC_INDIRECT_MMIO 2013-08-14 14:57:50 +10:00
io.c powerpc/powernv: Add PIO accessors for Power8 LPC bus 2013-08-14 14:58:08 +10:00
iomap.c powerpc/kerenl: Enable EEH for IO accessors 2014-06-24 12:43:13 +10:00
iommu.c powerpc/powernv: Fix IOMMU group lost 2014-08-13 15:13:42 +10:00
irq.c powerpc: Rename __get_SP() to current_stack_pointer() 2014-10-15 11:23:20 +11:00
isa-bridge.c POWERPC: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
jump_label.c
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kgdb.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
kprobes.c powerpc/kprobes: Fix jprobes on ABI v2 (LE) 2014-06-24 14:05:55 +10:00
kvm.c At over 200 commits, covering almost all supported architectures, this 2014-06-04 08:47:12 -07:00
kvm_emul.S KVM: PPC: Not optimizing MSR_CE and MSR_ME with paravirt. 2012-05-30 11:43:11 +02:00
l2cr_6xx.S
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legacy_serial.c powerpc: make of_device_ids const 2014-09-25 23:14:46 +10:00
machine_kexec.c powerpc: Fix endian issues in kexec and crash dump code 2014-02-11 11:24:52 +11:00
machine_kexec_32.c
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machine_kexec_64.c powerpc, kexec: Fix "Processor X is stuck" issue during kexec from ST mode 2014-05-28 13:24:26 +10:00
mce.c powerpc/book3s: Recover from MC in sapphire on SCOM read via MMIO. 2014-03-07 15:52:10 +11:00
mce_power.c powerpc/book3s: Recover from MC in sapphire on SCOM read via MMIO. 2014-03-07 15:52:10 +11:00
misc.S powerpc: Rename __get_SP() to current_stack_pointer() 2014-10-15 11:23:20 +11:00
misc_32.S powerpc: Set the correct ksp_limit on ppc32 when switching to irq stack 2014-02-17 11:19:34 +11:00
misc_64.S powerpc: module: handle MODVERSION for .TOC. 2014-04-23 10:05:28 +10:00
module.c powerpc: Move local setup.h declarations to arch includes 2013-10-30 16:00:31 +11:00
module_32.c powerpc: Use pr_fmt in module loader code 2014-10-02 17:33:54 +10:00
module_64.c powerpc: Use pr_fmt in module loader code 2014-10-02 17:33:54 +10:00
msi.c PCI/MSI/PPC: Remove arch_msi_check_device() 2014-10-01 12:21:14 -06:00
nvram_64.c powerpc: Make a bunch of things static 2014-09-25 23:14:41 +10:00
of_platform.c powerpc: make of_device_ids const 2014-09-25 23:14:46 +10:00
paca.c KVM: PPC: Book3S PR: Rework SLB switching code 2014-05-30 14:26:30 +02:00
pci-common.c powerpc/pci: Fix IO space breakage after of_pci_range_to_resource() change 2014-10-16 14:19:07 +11:00
pci-hotplug.c powerpc/PCI: Use pci_is_bridge() to simplify code 2014-05-27 14:57:36 -06:00
pci_32.c powerpc/pci: Support per-aperture memory offset 2013-05-06 13:40:40 +10:00
pci_64.c powerpc/PCI: Fix NULL dereference in sys_pciconfig_iobase() list traversal 2014-04-14 16:33:49 -06:00
pci_dn.c powerpc: Make PCI device node device tree accesses endian safe 2013-08-14 15:33:31 +10:00
pci_of_scan.c powerpc: Make a bunch of things static 2014-09-25 23:14:41 +10:00
pmc.c bug.h: add include of it to various implicit C users 2012-02-29 17:15:08 -05:00
ppc32.h powerpc: switch to generic old sigaction() 2013-02-03 18:16:10 -05:00
ppc_ksyms.c powerpc: Rename __get_SP() to current_stack_pointer() 2014-10-15 11:23:20 +11:00
ppc_ksyms_32.c powerpc: Separate ppc32 symbol exports into ppc_ksyms_32.c 2014-09-25 23:14:40 +10:00
ppc_save_regs.S
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proc_powerpc.c proc_powerpc: switch to fixed_size_llseek() 2013-06-29 12:57:50 +04:00
process.c powerpc: Rename __get_SP() to current_stack_pointer() 2014-10-15 11:23:20 +11:00
prom.c powerpc: Remove powerpc specific cmd_line 2014-10-02 17:33:55 +10:00
prom_init.c powerpc/powernv: Remove OPAL v1 takeover 2014-06-25 13:10:47 +10:00
prom_init_check.sh powerpc: Simplify symbol check in prom_init_check.sh 2014-09-25 23:14:46 +10:00
prom_parse.c powerpc: of_parse_dma_window should take a __be32 *dma_window 2013-08-14 15:33:26 +10:00
ptrace.c Merge git://git.infradead.org/users/eparis/audit 2014-10-19 16:25:56 -07:00
ptrace32.c powerpc: move debug registers in a structure 2013-10-18 18:44:49 -05:00
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-proc.c
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rtas-rtc.c
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rtas.c of/fdt: update of_get_flat_dt_prop in prep for libfdt 2014-04-30 00:59:15 -05:00
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/pseries: Drop config requests in EEH accessors 2014-10-15 11:27:19 +11:00
rtasd.c powerpc: Make a bunch of things static 2014-09-25 23:14:41 +10:00
setup-common.c powerpc: Add printk levels to powerpc code 2014-10-02 17:33:55 +10:00
setup_32.c powerpc: Remove powerpc specific cmd_line 2014-10-02 17:33:55 +10:00
setup_64.c powerpc: Add printk levels to setup_system output 2014-10-16 17:37:27 +11:00
signal.c powerpc: Use sigsp() 2014-08-06 13:04:32 +02:00
signal.h powerpc: Use get_signal() signal_setup_done() 2014-08-06 13:03:09 +02:00
signal_32.c powerpc: Use sigsp() 2014-08-06 13:04:32 +02:00
signal_64.c powerpc: Use sigsp() 2014-08-06 13:04:32 +02:00
smp-tbsync.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
smp.c powerpc: Only set numa node information for present cpus at boottime 2014-09-25 23:14:53 +10:00
stacktrace.c powerpc: Rename __get_SP() to current_stack_pointer() 2014-10-15 11:23:20 +11:00
suspend.c nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2014-10-09 22:26:04 -04:00
swsusp.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
swsusp_32.S
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swsusp_64.c Disintegrate asm/system.h for PowerPC 2012-03-28 18:30:02 +01:00
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
sys_ppc32.c unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE 2013-05-09 13:46:38 -04:00
syscalls.c powerpc: Delete non-required instances of include <linux/init.h> 2014-01-15 13:46:44 +11:00
sysfs.c powerpc: Fix regression of per-CPU DSCR setting 2014-05-28 13:35:40 +10:00
systbl.S powerpc: Use standard macros for sys_sigpending() & sys_old_getrlimit() 2014-07-28 14:09:23 +10:00
systbl_chk.c
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systbl_chk.sh
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tau_6xx.c
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time.c powerpc: Make a bunch of things static 2014-09-25 23:14:41 +10:00
tm.S powerpc: Fix regression of per-CPU DSCR setting 2014-05-28 13:35:40 +10:00
traps.c powerpc/book3s: Add basic infrastructure to handle HMI in Linux. 2014-08-05 16:33:48 +10:00
udbg.c powerpc: Remove platforms/wsp and associated pieces 2014-06-11 16:35:38 +10:00
udbg_16550.c powerpc: Remove platforms/wsp and associated pieces 2014-06-11 16:35:38 +10:00
uprobes.c uprobes/powerpc: Kill arch_uprobe->ainsn 2013-11-20 16:31:01 +01:00
vdso.c arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area 2014-08-08 15:57:27 -07:00
vecemu.c powerpc: Put FP/VSX and VR state into structures 2013-10-11 17:26:49 +11:00
vector.S powerpc: Don't corrupt transactional state when using FP/VMX in kernel 2014-01-15 13:59:11 +11:00
vio.c arch/powerpc: replace obsolete strict_strto* calls 2014-08-08 15:57:28 -07:00
vmlinux.lds.S powerpc/modules: Module CRC relocation fix causes perf issues 2013-07-24 14:18:43 +10:00