Andrey Ryabinin 0d39e2669d x86/kasan: Panic if there is not enough memory to boot ...

Currently KASAN doesn't panic in case it don't have enough memory
to boot. Instead, it crashes in some random place:

 kernel BUG at arch/x86/mm/physaddr.c:27!

 RIP: 0010:__phys_addr+0x268/0x276
 Call Trace:
  kasan_populate_shadow+0x3f2/0x497
  kasan_init+0x12e/0x2b2
  setup_arch+0x2825/0x2a2c
  start_kernel+0xc8/0x15f4
  x86_64_start_reservations+0x2a/0x2c
  x86_64_start_kernel+0x72/0x75
  secondary_startup_64+0xa5/0xb0

Use memblock_virt_alloc_try_nid() for allocations without failure
fallback. It will panic with an out of memory message.

Reported-by: kernel test robot <xiaolong.ye@intel.com>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: kasan-dev@googlegroups.com
Cc: Alexander Potapenko <glider@google.com>
Cc: lkp@01.org
Link: https://lkml.kernel.org/r/20180110153602.18919-1-aryabinin@virtuozzo.com

2018-01-15 00:32:35 +01:00

..

kmemcheck

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

amdtopology.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

cpu_entry_area.c

x86/cpu_entry_area: Add debugstore entries to cpu_entry_area

2017-12-23 21:13:00 +01:00

debug_pagetables.c

x86/mm/dump_pagetables: Allow dumping current pagetables

2017-12-23 21:13:01 +01:00

dump_pagetables.c

x86/mm: Map cpu_entry_area at the same place on 4/5 level

2018-01-04 23:04:57 +01:00

extable.c

x86/fpu: Reinitialize FPU registers if restoring FPU state fails

2017-09-25 09:26:38 +02:00

fault.c

Merge commit 'upstream-x86-entry' into WIP.x86/mm

2017-12-17 12:58:53 +01:00

highmem_32.c

x86/mm: Audit and remove any unnecessary uses of module.h

2016-07-14 13:04:20 +02:00

hugetlbpage.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

ident_map.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

init_32.c

x86/cpu_entry_area: Move it out of the fixmap

2017-12-22 20:13:05 +01:00

init_64.c

x86/mm/64: Rename the register_page_bootmem_memmap() 'size' parameter to 'nr_pages'

2017-10-30 10:30:23 +01:00

init.c

x86/tlb: Drop the _GPL from the cpu_tlbstate export

2018-01-05 00:39:58 +01:00

iomap_32.c

x86/mm: Audit and remove any unnecessary uses of module.h

2016-07-14 13:04:20 +02:00

ioremap.c

x86/mm: Use proper encryption attributes with /dev/mem

2017-07-18 11:38:05 +02:00

kasan_init_64.c

x86/kasan: Panic if there is not enough memory to boot

2018-01-15 00:32:35 +01:00

kaslr.c

x86/kaslr: Fix the vaddr_end mess

2018-01-05 00:39:57 +01:00

kmmio.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Makefile

x86/mm/pti: Add infrastructure for page table isolation

2017-12-23 21:12:59 +01:00

mem_encrypt_boot.S

x86/mm: Fix SME encryption stack ptr handling

2017-08-29 10:57:16 +02:00

mem_encrypt.c

x86/mm: Unbreak modules that rely on external PAGE_KERNEL availability

2017-11-08 13:52:36 -08:00

mm_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mmap.c

Revert "x86/mm: Limit mmap() of /dev/mem to valid physical addresses"

2017-10-27 10:06:49 +02:00

mmio-mod.c

x86/boot/e820: Move asm/e820.h to asm/e820/api.h

2017-01-28 09:31:13 +01:00

mpx.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

numa_32.c

x86/mm/32: Set the '__vmalloc_start_set' flag in initmem_init()

2017-05-09 08:12:27 +02:00

numa_64.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

numa_emulation.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

numa_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

numa.c

Merge branch 'x86/boot' into x86/mm, to avoid conflict

2017-04-11 08:56:05 +02:00

pageattr-test.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pageattr.c

x86, drm, fbdev: Do not specify encrypted memory for video mappings

2017-07-18 11:38:04 +02:00

pat_internal.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pat_rbtree.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pat.c

x86/mm: Use proper encryption attributes with /dev/mem

2017-07-18 11:38:05 +02:00

pf_in.c

x86/mm: Audit and remove any unnecessary uses of module.h

2016-07-14 13:04:20 +02:00

pf_in.h

…

pgtable_32.c

x86/cpu_entry_area: Move it out of the fixmap

2017-12-22 20:13:05 +01:00

pgtable.c

x86/mm/pti: Allocate a separate user PGD

2017-12-23 21:13:00 +01:00

physaddr.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

physaddr.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

pkeys.c

x86/fpu: Rename fpu::fpstate_active to fpu::initialized

2017-09-26 09:43:36 +02:00

pti.c

x86/mm/pti: Remove dead logic in pti_user_pagetable_walk*()

2018-01-08 17:42:13 +01:00

setup_nx.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

srat.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

testmmiotrace.c

Annotate hardware config module parameters in arch/x86/mm/

2017-04-04 16:54:21 +01:00

tlb.c

x86/mm: Use/Fix PCID to optimize user/kernel switches

2017-12-23 21:13:00 +01:00