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24a5da73f4
linux/arch/x86/kernel
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Yinghai Lu 24a5da73f4 x86_64: make bootmap_start page align v6 
boot oopses when a system has 64 or 128 GB of RAM installed:

Calling initcall 0xffffffff80bc33b6: sctp_init+0x0/0x711()
BUG: unable to handle kernel NULL pointer dereference at 000000000000005f
IP: [<ffffffff802bfe55>] proc_register+0xe7/0x10f
PGD 0
Oops: 0000 [1] SMP
CPU 0
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.24-smp-g5a514e21-dirty #6
RIP: 0010:[<ffffffff802bfe55>]  [<ffffffff802bfe55>] proc_register+0xe7/0x10f
RSP: 0000:ffff810824c57e60  EFLAGS: 00010246
RAX: 000000000000d7d7 RBX: ffff811024c5fa80 RCX: ffff810824c57e08
RDX: 0000000000000000 RSI: 0000000000000195 RDI: ffffffff80cc2460
RBP: ffffffffffffffff R08: 0000000000000000 R09: ffff811024c5fa80
R10: 0000000000000000 R11: 0000000000000002 R12: ffff810824c57e6c
R13: 0000000000000000 R14: ffff810824c57ee0 R15: 00000006abd25bee
FS:  0000000000000000(0000) GS:ffffffff80b4d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 000000000000005f CR3: 0000000000201000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 1, threadinfo ffff810824c56000, task ffff812024c52000)
Stack:  ffffffff80a57348 0000019500000000 ffff811024c5fa80 0000000000000000
 00000000ffffff97 ffffffff802bfef0 0000000000000000 ffffffffffffffff
 0000000000000000 ffffffff80bc3b4b ffff810824c57ee0 ffffffff80bc34a5
Call Trace:
 [<ffffffff802bfef0>] ? create_proc_entry+0x73/0x8a
 [<ffffffff80bc3b4b>] ? sctp_snmp_proc_init+0x1c/0x34
 [<ffffffff80bc34a5>] ? sctp_init+0xef/0x711
 [<ffffffff80b976e3>] ? kernel_init+0x175/0x2e1
 [<ffffffff8020ccf8>] ? child_rip+0xa/0x12
 [<ffffffff80b9756e>] ? kernel_init+0x0/0x2e1
 [<ffffffff8020ccee>] ? child_rip+0x0/0x12

Code: 1e 48 83 7b 38 00 75 08 48 c7 43 38 f0 e8 82 80 48 83 7b 30 00 75 08 48 c7 43 30 d0 e9 82 80 48 c7 c7 60 24 cc 80 e8 bd 5a 54 00 <48> 8b 45 60 48 89 6b 58 48 89 5d 60 48 89 43 50 fe 05 f5 25 a0
RIP  [<ffffffff802bfe55>] proc_register+0xe7/0x10f
 RSP <ffff810824c57e60>
CR2: 000000000000005f
---[ end trace 02c2d78def82877a ]---
Kernel panic - not syncing: Attempted to kill init!

it turns out some variables near end of bss are corrupted already.

in System.map we have
ffffffff80d40420 b rsi_table
ffffffff80d40620 B krb5_seq_lock
ffffffff80d40628 b i.20437
ffffffff80d40630 b xprt_rdma_inline_write_padding
ffffffff80d40638 b sunrpc_table_header
ffffffff80d40640 b zero
ffffffff80d40644 b min_memreg
ffffffff80d40648 b rpcrdma_tk_lock_g
ffffffff80d40650 B sctp_assocs_id_lock
ffffffff80d40658 B proc_net_sctp
ffffffff80d40660 B sctp_assocs_id
ffffffff80d40680 B sysctl_sctp_mem
ffffffff80d40690 B sysctl_sctp_rmem
ffffffff80d406a0 B sysctl_sctp_wmem
ffffffff80d406b0 b sctp_ctl_socket
ffffffff80d406b8 b sctp_pf_inet6_specific
ffffffff80d406c0 b sctp_pf_inet_specific
ffffffff80d406c8 b sctp_af_v4_specific
ffffffff80d406d0 b sctp_af_v6_specific
ffffffff80d406d8 b sctp_rand.33270
ffffffff80d406dc b sctp_memory_pressure
ffffffff80d406e0 b sctp_sockets_allocated
ffffffff80d406e4 b sctp_memory_allocated
ffffffff80d406e8 b sctp_sysctl_header
ffffffff80d406f0 b zero
ffffffff80d406f4 A __bss_stop
ffffffff80d406f4 A _end

and setup_node_bootmem() will use that page 0xd40000 for bootmap
Bootmem setup node 0 0000000000000000-0000000828000000
  NODE_DATA [000000000008a485 - 0000000000091484]
  bootmap [0000000000d406f4 -  0000000000e456f3] pages 105
Bootmem setup node 1 0000000828000000-0000001028000000
  NODE_DATA [0000000828000000 - 0000000828006fff]
  bootmap [0000000828007000 -  0000000828106fff] pages 100
Bootmem setup node 2 0000001028000000-0000001828000000
  NODE_DATA [0000001028000000 - 0000001028006fff]
  bootmap [0000001028007000 -  0000001028106fff] pages 100
Bootmem setup node 3 0000001828000000-0000002028000000
  NODE_DATA [0000001828000000 - 0000001828006fff]
  bootmap [0000001828007000 -  0000001828106fff] pages 100

setup_node_bootmem() makes NODE_DATA cacheline aligned,
and bootmap is page-aligned.

the patch updates find_e820_area() to make sure we can meet
the alignment constraints.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-01 17:49:41 +01:00
..
acpi x86: unify arch/x86/kernel/acpi/sleep*.c 2008-01-30 13:32:54 +01:00
cpu x86: c_p_a clflush_cache_range fix 2008-01-31 22:05:45 +01:00
.gitignore .gitignore update for x86 arch 2007-10-17 21:19:04 +02:00
alternative.c x86: fix up alternatives with lockdep enabled 2008-01-30 13:33:24 +01:00
aperture_64.c x86: change aper valid checking sequence 2008-01-30 13:33:39 +01:00
apic_32.c x86: don't disable the APIC if it hasn't been mapped yet 2008-01-30 13:33:17 +01:00
apic_64.c x86: change bios_cpu_apicid to percpu data variable fixup 2008-01-30 13:33:21 +01:00
apm_32.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
asm-offsets_32.c x86: unify struct desc_ptr 2008-01-30 13:31:12 +01:00
asm-offsets_64.c x86: add asm_offset PARAVIRT constants 2008-01-30 13:33:19 +01:00
asm-offsets.c
audit_64.c
bootflag.c x86: coding style cleanup for kernel/bootflag.c 2008-01-30 13:32:31 +01:00
bugs_64.c x86, 32-bit: trim memory not covered by wb mtrrs 2008-01-30 13:33:18 +01:00
cpuid.c x86: remove unneded casts 2008-01-30 13:33:23 +01:00
crash_dump_32.c kmap leak fix for x86_32 kdump 2007-10-19 11:53:33 -07:00
crash_dump_64.c
crash.c x86: disable hpet legacy replacement for kdump 2007-12-03 17:17:10 +01:00
doublefault_32.c x86: unify tss_struct 2008-01-30 13:31:31 +01:00
ds.c x86: fix small sparse warning 2008-01-31 22:05:47 +01:00
e820_32.c x86_32: trim memory by updating e820 2008-01-30 13:33:32 +01:00
e820_64.c x86_64: make bootmap_start page align v6 2008-02-01 17:49:41 +01:00
early_printk.c [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
early-quirks.c x86: fix section mismatch warning in early-quirks.c 2008-01-30 13:33:37 +01:00
efi_32.c x86: fixes some bugs about EFI memory map handling 2008-01-30 13:34:10 +01:00
efi_64.c x86: fixes some bugs about EFI memory map handling 2008-01-30 13:34:10 +01:00
efi_stub_32.S
efi_stub_64.S x86: EFI runtime service support 2008-01-30 13:31:19 +01:00
efi.c x86: fixes some bugs about EFI memory map handling 2008-01-30 13:34:10 +01:00
entry_32.S x86: move to .rodata/.init.data 2008-01-30 13:31:23 +01:00
entry_64.S x86: replace privileged instructions with paravirt macros 2008-01-30 13:32:08 +01:00
genapic_64.c x86: cleanup x86_cpu_to_apicid references 2008-01-30 13:33:11 +01:00
genapic_flat_64.c x86: convert cpu_to_apicid to be a per cpu variable 2007-10-19 20:35:03 +02:00
geode_32.c x86: GEODE: update GPIO API to support setting multiple GPIOs at once 2008-01-30 13:33:35 +01:00
head64.c x86_64: add debug name for early_res 2008-02-01 17:49:41 +01:00
head_32.S x86: fix Section mismatch: reference to .init.text:lguest_entry 2008-01-30 13:33:28 +01:00
head_64.S x86: make early printk selectable on 64-bit as well 2008-01-30 13:33:06 +01:00
hpet.c rtc: use the IRQ callback interface in (old) RTC driver 2008-01-30 13:33:31 +01:00
i386_ksyms_32.c x86: unexport __{read,write}_lock_failed 2008-01-30 13:30:29 +01:00
i387.c x86: x86 user_regset cleanup 2008-01-30 13:31:55 +01:00
i8237.c Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
i8253.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
i8259_32.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
i8259_64.c x86: provide a native_init_IRQ function on 64-bit 2008-01-30 13:33:19 +01:00
init_task.c x86: nuke a ton of unused exports 2008-01-30 13:30:28 +01:00
io_apic_32.c arch/x86/kernel/io_apic_{64,32}.c: use time_before 2008-01-30 13:32:19 +01:00
io_apic_64.c arch/x86/kernel/io_apic_{64,32}.c: use time_before 2008-01-30 13:32:19 +01:00
io_delay.c x86: add DMI quirk for io-delay hangs on Compaq Presario V6000 laptops 2008-01-30 13:30:05 +01:00
ioport.c x86: refactor ioport unification 2008-01-30 13:33:10 +01:00
irq_32.c x86: remove all definitions with fastcall 2008-01-30 13:31:17 +01:00
irq_64.c x86: rename the struct pt_regs members for 32/64-bit consistency 2008-01-30 13:30:56 +01:00
k8.c
kdebugfs.c x86 boot : export boot_params via debugfs for debugging 2008-01-30 13:32:51 +01:00
kprobes.c x86: remove unneded casts 2008-01-30 13:33:23 +01:00
ldt.c x86: adjust/fix LDT handling for Xen 2008-01-30 13:33:14 +01:00
machine_kexec_32.c x86: unify struct desc_ptr 2008-01-30 13:31:12 +01:00
machine_kexec_64.c x86: 64-bit, make sparsemem vmemmap the only memory model 2008-01-30 13:30:47 +01:00
Makefile x86: rodata config hookup 2008-01-30 13:34:09 +01:00
mca_32.c
mfgpt_32.c x86: GEODE add the "mfgptfix" boot time option to fix MFGPT timers 2008-01-30 13:33:33 +01:00
microcode.c x86: remove unneded casts 2008-01-30 13:33:23 +01:00
module_32.c
module_64.c
mpparse_32.c x86: fix section mismatch warning in acpi/boot.c 2008-01-30 13:33:37 +01:00
mpparse_64.c x86: fix section mismatch warning in acpi/boot.c 2008-01-30 13:33:37 +01:00
msr.c PM: Acquire device locks on suspend 2008-01-24 20:40:04 -08:00
nmi_32.c x86: clean up nmi_32/64.c 2008-01-30 13:30:33 +01:00
nmi_64.c x86: clean up nmi_32/64.c 2008-01-30 13:30:33 +01:00
numaq_32.c x86: convert TSC disabling to generic cpuid disable bitmap 2008-01-30 13:33:20 +01:00
paravirt_patch_32.c x86: move patching code to arch-specific file. 2008-01-30 13:32:10 +01:00
paravirt_patch_64.c x86: add stringify header 2008-01-30 13:33:19 +01:00
paravirt.c x86: fill in missing pv_mmu_ops entries for PAGETABLE_LEVELS >= 3 2008-01-30 13:33:20 +01:00
pci-calgary_64.c x86: remove duplicate includes 2008-01-30 13:30:32 +01:00
pci-dma_32.c i386: Clean up duplicate includes in arch/i386/kernel/ 2007-10-17 20:15:51 +02:00
pci-dma_64.c x86: pci-dma_64.c: cleanups 2008-01-30 13:30:31 +01:00
pci-gart_64.c x86: cpa: move flush to cpa 2008-01-30 13:34:07 +01:00
pci-nommu_64.c x86 gart: rename iommu.h to gart.h 2007-10-30 00:22:22 +01:00
pci-swiotlb_64.c x86: nuke a ton of unused exports 2008-01-30 13:30:28 +01:00
pcspeaker.c
pmtimer_64.c x86: move pmtmr related declarations 2008-01-30 13:30:18 +01:00
process_32.c x86: fix section mismatch warning in process_*.c 2008-01-30 13:33:37 +01:00
process_64.c x86: fix section mismatch warning in process_*.c 2008-01-30 13:33:37 +01:00
ptrace.c x86, ptrace: add bts_struct size to status command 2008-01-30 13:32:54 +01:00
quirks.c x86: force enable HPET on (some?) ICH9 boards 2008-01-30 13:33:39 +01:00
reboot_fixups_32.c x86: add the RDC machine specific reboot fixup 2008-01-30 13:33:36 +01:00
reboot.c x86: reboot: remove inb_p usage 2008-01-30 13:33:25 +01:00
relocate_kernel_32.S
relocate_kernel_64.S
rtc.c x86: fix sched_clock() 2008-01-30 13:32:40 +01:00
scx200_32.c x86: fix sparse warning in kernel/scx200_32.c 2008-01-31 22:05:45 +01:00
setup64.c x86: export __supported_pte_mask 2008-01-30 13:33:24 +01:00
setup_32.c x86: early boot debugging via FireWire (ohci1394_dma=early) 2008-01-30 13:34:11 +01:00
setup_64.c x86_64: make bootmap_start page align v6 2008-02-01 17:49:41 +01:00
sigframe_32.h
signal_32.c x86: remove unneded casts 2008-01-30 13:33:23 +01:00
signal_64.c x86: print which shared library/executable faulted in segfault etc. messages v3 2008-01-30 13:33:18 +01:00
smp_32.c x86: voluntary leave_mm before entering ACPI C3 2008-01-30 13:32:01 +01:00
smp_64.c x86: voluntary leave_mm before entering ACPI C3 2008-01-30 13:32:01 +01:00
smpboot_32.c x86: remove set_kernel_exec() 2008-01-30 13:33:53 +01:00
smpboot_64.c x86: not set boot cpu in cpu_online_map in smp_prepare_boot_cpu() 2008-01-30 13:33:39 +01:00
smpcommon_32.c x86: change write_gdt_entry signature. 2008-01-30 13:31:13 +01:00
srat_32.c x86 32-bit boot: rename bt_ioremap() to early_ioremap() 2008-01-30 13:33:44 +01:00
stacktrace.c x86: remove unneded casts 2008-01-30 13:33:23 +01:00
step.c x86: remove last user of get_segment_eip 2008-01-30 13:33:12 +01:00
summit_32.c spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
suspend_64.c x86: make __{save,restore}_processor_state static 2008-01-30 13:31:23 +01:00
suspend_asm_64.S x86: rename the struct pt_regs members for 32/64-bit consistency 2008-01-30 13:30:56 +01:00
sys_i386_32.c remove include/asm-*/ipc.h 2007-10-17 08:42:55 -07:00
sys_x86_64.c x86: PIE executable randomization, checkpatch fixes 2008-01-30 13:31:07 +01:00
syscall_64.c
syscall_table_32.S
tce_64.c x86: Create clflush() inline, remove hardcoded wbinvd 2007-10-17 20:16:12 +02:00
test_nx.c x86: fix arch/x86/kernel/test_nx.c modular build bug 2008-01-30 23:27:58 +01:00
test_rodata.c x86: add testcases for RODATA and NX protections/attributes 2008-01-30 13:34:08 +01:00
time_32.c x86: rename the struct pt_regs members for 32/64-bit consistency 2008-01-30 13:30:56 +01:00
time_64.c x86: fix cpu MHz reporting for AMD family 0x11 2008-01-30 13:33:35 +01:00
tls.c x86: x86 user_regset TLS 2008-01-30 13:31:52 +01:00
tls.h x86: x86 user_regset TLS 2008-01-30 13:31:52 +01:00
topology.c x86: fix section mismatch warning in topology.c 2008-01-30 13:33:37 +01:00
trampoline_32.S x86: misc. constifications 2007-10-17 20:16:08 +02:00
trampoline_64.S x86: misc. constifications 2007-10-17 20:16:08 +02:00
traps_32.c x86: fix EISA ioremap 2008-01-30 13:33:49 +01:00
traps_64.c x86: use KSYM_NAME_LEN 2008-01-30 13:33:33 +01:00
tsc_32.c x86: convert TSC disabling to generic cpuid disable bitmap 2008-01-30 13:33:20 +01:00
tsc_64.c x86: export check_tsc_unstable 2008-01-30 13:33:24 +01:00
tsc_sync.c x86: add warning to check_tsc_warp() 2008-01-30 13:33:24 +01:00
verify_cpu_64.S
vm86_32.c arch/x86/: spelling fixes 2008-01-30 13:31:42 +01:00
vmi_32.c x86: add mm parameter to paravirt_alloc_pd 2008-01-30 13:33:39 +01:00
vmiclock_32.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
vmlinux_32.lds.S x86: make arch/x86/kernel/acpi/wakeup_32.S use a separate 2008-01-30 13:32:50 +01:00
vmlinux_64.lds.S x86: provide __parainstructions section 2008-01-30 13:33:19 +01:00
vmlinux.lds.S
vsmp_64.c x86: clean up arch/x86/kernel/vsmp_64.c 2008-01-30 13:30:24 +01:00
vsyscall_64.c x86: map vsyscalls early enough 2008-01-30 13:32:39 +01:00
x8664_ksyms_64.c x86: export cpu_gdt_descr 2008-01-30 13:31:10 +01:00