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6aba0c84ec
linux/arch/powerpc/kernel
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Aneesh Kumar K.V 6aba0c84ec powerpc/mm: Check memblock_add against MAX_PHYSMEM_BITS range 
With SPARSEMEM config enabled, we make sure that we don't add sections beyond
MAX_PHYSMEM_BITS range. This results in not building vmemmap mapping for
range beyond max range. But our memblock layer looks the device tree and create
mapping for the full memory range. Prevent this by checking against
MAX_PHSYSMEM_BITS when doing memblock_add.

We don't do similar check for memeblock_reserve_range. If reserve range is beyond
MAX_PHYSMEM_BITS we expect that to be configured with 'nomap'. Any other
reserved range should come from existing memblock ranges which we already
filtered while adding.

This avoids crash as below when running on a system with system ram config above
MAX_PHSYSMEM_BITS

 Unable to handle kernel paging request for data at address 0xc00a001000000440
 Faulting instruction address: 0xc000000001034118
 cpu 0x0: Vector: 300 (Data Access) at [c00000000124fb30]
     pc: c000000001034118: __free_pages_bootmem+0xc0/0x1c0
     lr: c00000000103b258: free_all_bootmem+0x19c/0x22c
     sp: c00000000124fdb0
    msr: 9000000002001033
    dar: c00a001000000440
  dsisr: 40000000
   current = 0xc00000000120dd00
   paca    = 0xc000000001f60000^I irqmask: 0x03^I irq_happened: 0x01
     pid   = 0, comm = swapper
 [c00000000124fe20] c00000000103b258 free_all_bootmem+0x19c/0x22c
 [c00000000124fee0] c000000001010a68 mem_init+0x3c/0x5c
 [c00000000124ff00] c00000000100401c start_kernel+0x298/0x5e4
 [c00000000124ff90] c00000000000b57c start_here_common+0x1c/0x520

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-24 22:03:16 +10:00
..
trace powerpc/kbuild: move -mprofile-kernel check to Kconfig 2018-06-11 09:16:29 +09:00
vdso32 powerpc/kbuild: Remove CROSS32 defines from top level powerpc Makefile 2018-06-01 23:08:06 +10:00
vdso64 powerpc/vdso64: Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE 2017-12-04 15:01:09 +11:00
.gitignore
align.c powerpc/sstep: Introduce GETTYPE macro 2018-06-03 21:19:40 +10:00
asm-offsets.c powerpc/64s: Remove POWER9 DD1 support 2018-07-16 11:37:21 +10:00
audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
btext.c powerpc: Make function btext_initialize static 2018-05-25 12:04:44 +10:00
cacheinfo.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
cacheinfo.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cpu_setup_6xx.S powerpc: Free up CPU feature bits on 64-bit machines 2018-03-24 00:38:51 +11:00
cpu_setup_44x.S
cpu_setup_fsl_booke.S powerpc: Free up CPU feature bits on 64-bit machines 2018-03-24 00:38:51 +11:00
cpu_setup_pa6t.S
cpu_setup_power.S powerpc/64s: Clear PCR on boot 2018-05-18 16:05:15 +10:00
cpu_setup_ppc970.S
cputable.c Merge branch 'topic/ppc-kvm' into next 2018-07-19 14:37:57 +10:00
crash_dump.c
crash.c powerpc/64: Use array of paca pointers and allocate pacas individually 2018-03-30 23:34:23 +11:00
dbell.c
dma-iommu.c powerpc: rename dma_direct_ to dma_nommu_ 2018-01-10 16:41:14 +01:00
dma-swiotlb.c swiotlb: rename swiotlb_free to swiotlb_exit 2018-01-15 09:35:39 +01:00
dma.c powerpc updates for 4.18 2018-06-07 10:23:33 -07:00
dt_cpu_ftrs.c Merge branch 'topic/ppc-kvm' into next 2018-07-19 14:37:57 +10:00
eeh_cache.c powerpc/eeh: Fix misleading comment in __eeh_addr_cache_get_device() 2018-03-27 23:44:58 +11:00
eeh_dev.c powerpc/eeh: Create PHB PEs after EEH is initialized 2017-09-21 14:56:00 +10:00
eeh_driver.c powerpc/eeh: Refactor report functions 2018-06-03 20:43:41 +10:00
eeh_event.c powerpc/eeh: Manage EEH_PE_RECOVERING inside eeh_handle_normal_event() 2018-03-27 23:44:58 +11:00
eeh_pe.c powerpc/eeh: Introduce eeh_for_each_pe() 2018-06-03 20:43:39 +10:00
eeh_sysfs.c powerpc/eeh: Add EEH notify resume sysfs 2018-01-27 20:02:52 +11:00
eeh.c powerpc/eeh: Avoid misleading message "EEH: no capable adapters found" 2018-07-02 23:54:26 +10:00
entry_32.S powerpc: Add syscall detection for restartable sequences 2018-06-06 11:58:33 +02:00
entry_64.S powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely 2018-07-24 22:03:14 +10:00
epapr_hcalls.S
epapr_paravirt.c
exceptions-64e.S powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely 2018-07-24 22:03:14 +10:00
exceptions-64s.S powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely 2018-07-24 22:03:14 +10:00
fadump.c powerpc/fadump: Unregister fadump on kexec down path. 2018-05-03 23:19:30 +10:00
firmware.c
fpu.S
fsl_booke_entry_mapping.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
head_8xx.S powerpc/8xx: fix handling of early NULL pointer dereference 2018-07-19 14:38:45 +10:00
head_32.S powerpc: Fix DABR match on hash based systems 2017-11-13 22:12:48 +11:00
head_40x.S
head_44x.S
head_64.S powerpc/64: Use array of paca pointers and allocate pacas individually 2018-03-30 23:34:23 +11:00
head_booke.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
head_fsl_booke.S
hw_breakpoint.c powerpc/ptrace: Fix enforcement of DAWR constraints 2018-05-21 14:47:44 +10:00
idle_6xx.S
idle_book3e.S powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely 2018-07-24 22:03:14 +10:00
idle_book3s.S powerpc/64s: Remove POWER9 DD1 support 2018-07-16 11:37:21 +10:00
idle_e500.S
idle_power4.S powerpc/64: Rename soft_enabled to irq_soft_mask 2018-01-19 22:37:01 +11:00
idle.c
ima_kexec.c
io-workarounds.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
io.c
iomap.c powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo} 2018-04-05 14:59:26 +10:00
iommu.c powerpc/iommu: Use permission-specific DEVICE_ATTR variants 2017-09-01 16:42:54 +10:00
irq.c powerpc/64s: make PACA_IRQ_HARD_DIS track MSR[EE] closely 2018-07-24 22:03:14 +10:00
isa-bridge.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
jump_label.c
kexec_elf_64.c kernel/kexec_file.c: allow archs to set purgatory load address 2018-04-13 17:10:28 -07:00
kgdb.c powerpc/8xx: Getting rid of remaining use of CONFIG_8xx 2017-08-10 23:32:12 +10:00
kprobes-ftrace.c powerpc/kprobes: Do not disable interrupts for optprobes and kprobes_on_ftrace 2017-11-12 23:51:41 +11:00
kprobes.c powerpc/kprobes: Fix call trace due to incorrect preempt count 2018-03-31 00:10:33 +11:00
kvm_emul.S
kvm.c powerpc/kvm: Prefer fault_in_pages_readable function 2018-05-17 14:12:40 +10:00
l2cr_6xx.S powerpc/l2cr_6xx: Fix invalid use of register expressions 2017-08-15 21:04:32 +10:00
legacy_serial.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
machine_kexec_32.c
machine_kexec_64.c powerpc/64/kexec: fix race in kexec when XIVE is shutdown 2018-05-10 23:25:08 +10:00
machine_kexec_file_64.c kexec_file,x86,powerpc: factor out kexec_file_ops functions 2018-04-13 17:10:27 -07:00
machine_kexec.c powerpc/kdump: Handle crashkernel memory reservation failure 2018-07-04 22:40:24 +10:00
Makefile powerpc updates for 4.17 2018-04-07 12:08:19 -07:00
mce_power.c powerpc/64s: Report SLB multi-hit rather than parity error 2018-07-12 21:08:10 +10:00
mce.c powerpc updates for 4.16 2018-02-02 10:01:04 -08:00
misc_32.S
misc_64.S powerpc: Remove unused flush_dcache_phys_range() 2018-03-20 16:47:53 +11:00
misc.S powerpc/misc: merge reloc_offset() and add_reloc_offset() 2018-06-04 00:39:17 +10:00
module_32.c powerpc/sparse: Fix plain integer as NULL pointer warning 2018-05-25 12:04:38 +10:00
module_64.c powerpc/kbuild: move -mprofile-kernel check to Kconfig 2018-06-11 09:16:29 +09:00
module.c powerpc/64s: Patch barrier_nospec in modules 2018-06-03 20:43:44 +10:00
module.lds powerpc/modules: Fix alignment of .toc section in kernel modules 2017-12-11 13:03:35 +11:00
msi.c
nvram_64.c powerpc/64: Fix strncpy() related build failures with GCC 8.1 2018-06-03 20:40:24 +10:00
of_platform.c powerpc: Convert to using %pOF instead of full_name 2017-08-23 22:27:04 +10:00
optprobes_head.S powerpc/64: Rename soft_enabled to irq_soft_mask 2018-01-19 22:37:01 +11:00
optprobes.c powerpc/kprobes: Do not disable interrupts for optprobes and kprobes_on_ftrace 2017-11-12 23:51:41 +11:00
paca.c Merge branch 'topic/paca' into next 2018-03-31 09:09:36 +11:00
pci_32.c powerpc: Remove -Wattribute-alias pragmas 2018-06-25 23:21:13 +09:00
pci_64.c powerpc: Remove -Wattribute-alias pragmas 2018-06-25 23:21:13 +09:00
pci_dn.c powerpc/pci: Separate SR-IOV Calls 2017-12-11 13:03:35 +11:00
pci_of_scan.c pci-v4.16-changes 2018-02-06 09:59:40 -08:00
pci-common.c powerpc/pci: Remove legacy debug code 2018-07-02 23:54:28 +10:00
pci-hotplug.c powerpc/pci: Unroll two pass loop when scanning bridges 2017-12-18 23:05:52 -06:00
pmc.c
ppc32.h
ppc_save_regs.S powerpc/32: Use stmw/lmw for registers save/restore in asm 2018-05-18 00:09:06 +10:00
proc_powerpc.c powerpc: Use octal numbers for file permissions 2018-01-22 05:48:33 +11:00
process.c powerpc/pkeys: Save the pkey registers before fork 2018-07-24 21:34:47 +10:00
prom_init_check.sh powerpc/mm/radix: Update command line parsing for disable_radix 2018-04-04 16:59:50 +10:00
prom_init.c powerpc/prom_init: Remove linux,stdout-package property 2018-07-20 12:50:51 +10:00
prom_parse.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
prom.c powerpc/mm: Check memblock_add against MAX_PHYSMEM_BITS range 2018-07-24 22:03:16 +10:00
ptrace32.c
ptrace.c powerpc/ptrace: Use copy_{from, to}_user() rather than open-coding 2018-06-03 20:43:41 +10:00
reloc_32.S
reloc_64.S powerpc/asm: Convert .llong directives to .8byte 2017-08-31 14:26:47 +10:00
rtas_flash.c powerpc: Use octal numbers for file permissions 2018-01-22 05:48:33 +11:00
rtas_pci.c powerpc/kernel: Change retrieval of pci_dn 2017-08-31 14:26:40 +10:00
rtas-proc.c powerpc updates for 4.18 2018-06-07 10:23:33 -07:00
rtas-rtc.c powerpc: use time64_t in read_persistent_clock 2018-06-03 20:43:33 +10:00
rtas.c powerpc: Remove -Wattribute-alias pragmas 2018-06-25 23:21:13 +09:00
rtasd.c treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
security.c powerpc64s: Show ori31 availability in spectre_v1 sysfs file not v2 2018-07-24 22:03:15 +10:00
setup_32.c powerpc/32: Add missing prototypes for (early|machine)_init() 2018-03-13 15:50:42 +11:00
setup_64.c powerpc/64: hard disable irqs in panic_smp_self_stop 2018-06-19 21:28:22 +10:00
setup-common.c powerpc/64: hard disable irqs on the panic()ing CPU 2018-06-19 21:28:23 +10:00
setup.h powerpc/tau: Synchronize function prototypes and body 2018-05-25 12:04:43 +10:00
signal_32.c powerpc: Remove -Wattribute-alias pragmas 2018-06-25 23:21:13 +09:00
signal_64.c powerpc: Remove -Wattribute-alias pragmas 2018-06-25 23:21:13 +09:00
signal.c rseq: Avoid infinite recursion when delivering SIGSEGV 2018-06-22 19:04:22 +02:00
signal.h powerpc/syscalls: signal_{32, 64} - switch to SYSCALL_DEFINE 2018-05-10 23:25:13 +10:00
smp-tbsync.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smp.c powerpc: NMI IPI make NMI IPIs fully sychronous 2018-07-24 22:03:14 +10:00
stacktrace.c powerpc/64s: Fix build failures with CONFIG_NMI_IPI=n 2018-06-19 23:03:50 +10:00
suspend.c
swsusp_32.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
swsusp_64.c
swsusp_asm64.S powerpc: Fix invalid use of register expressions 2017-08-10 22:29:41 +10:00
swsusp_booke.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
swsusp.c
sys_ppc32.c powerpc/syscalls: kill ppc32_select() 2018-05-10 23:25:15 +10:00
syscalls.c powerpc: Remove -Wattribute-alias pragmas 2018-06-25 23:21:13 +09:00
sysfs.c Merge branch 'topic/paca' into next 2018-03-31 09:09:36 +11:00
systbl_chk.c powerpc/syscalls: Add COMPAT_SPU_NEW() macro 2018-05-10 23:25:14 +10:00
systbl_chk.sh powerpc: Make it clearer that systbl check errors are errors 2018-05-10 23:25:16 +10:00
systbl.S powerpc/syscalls: Add COMPAT_SPU_NEW() macro 2018-05-10 23:25:14 +10:00
tau_6xx.c powerpc/tau: Make some function static 2018-05-25 12:04:44 +10:00
time.c powerpc/time: inline arch_vtime_task_switch() 2018-06-04 00:39:20 +10:00
tm.S powerpc: Export tm_enable()/tm_disable/tm_abort() APIs 2018-05-24 16:04:02 +10:00
traps.c signal/powerpc: Replace TRAP_FIXME with TRAP_UNK 2018-04-25 10:40:58 -05:00
udbg_16550.c
udbg.c
uprobes.c powerpc/uprobes: Implement arch_uretprobe_is_alive() 2017-08-24 16:19:21 +10:00
vdso.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
vecemu.c powerpc: Add a missing include header 2018-05-25 12:04:46 +10:00
vector.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmlinux.lds.S powerpc updates for 4.18 2018-06-07 10:23:33 -07:00
watchdog.c powerpc: NMI IPI make NMI IPIs fully sychronous 2018-07-24 22:03:14 +10:00