Laura Abbott e52eca82d1 x86/mm/32: Set the '__vmalloc_start_set' flag in initmem_init() ...

commit 861ce4a3244c21b0af64f880d5bfe5e6e2fb9e4a upstream.

'__vmalloc_start_set' currently only gets set in initmem_init() when
!CONFIG_NEED_MULTIPLE_NODES. This breaks detection of vmalloc address
with virt_addr_valid() with CONFIG_NEED_MULTIPLE_NODES=y, causing
a kernel crash:

  [mm/usercopy] 517e1fbeb6: kernel BUG at arch/x86/mm/physaddr.c:78!

Set '__vmalloc_start_set' appropriately for that case as well.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: dc16ecf7fd ("x86-32: use specific __vmalloc_start_set flag in __virt_addr_valid")
Link: http://lkml.kernel.org/r/1494278596-30373-1-git-send-email-labbott@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>

2017-11-02 07:16:27 +01:00

..

alpha

alpha: fix copy_from_user()

2017-02-06 23:33:02 +01:00

arc

mm: larger stack guard gap, between vmas

2017-06-21 15:42:43 +02:00

arm

mm: larger stack guard gap, between vmas

2017-06-21 15:42:43 +02:00

arm64

arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fields

2017-06-08 00:46:56 +02:00

avr32

avr32: off by one in at32_init_pio()

2017-02-06 23:32:57 +01:00

blackfin

blackfin: fix copy_from_user()

2017-02-06 23:33:00 +01:00

c6x

c6x/ptrace: Remove useless PTRACE_SETREGSET implementation

2017-06-20 14:04:37 +02:00

cris

cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected

2017-06-08 00:46:52 +02:00

frv

mm: larger stack guard gap, between vmas

2017-06-21 15:42:43 +02:00

h8300

…

hexagon

hexagon: fix strncpy_from_user() error return

2017-02-06 23:33:01 +01:00

ia64

ia64: copy_from_user() should zero the destination on access_ok() failure

2017-02-06 23:33:03 +01:00

m32r

m32r: fix __get_user()

2017-02-06 23:32:58 +01:00

m68k

m68k: Fix ndelay() macro

2017-06-08 00:46:48 +02:00

metag

metag/usercopy: Zero rest of buffer from copy_from_user

2017-06-20 14:04:43 +02:00

microblaze

microblaze: fix copy_from_user()

2017-02-06 23:32:58 +01:00

mips

MIPS: Fix mips_atomic_set() retry condition

2017-11-02 07:16:17 +01:00

mn10300

mn10300: copy_from_user() should zero on access_ok() failure...

2017-02-06 23:33:03 +01:00

openrisc

openrisc: fix the fix of copy_from_user()

2017-02-06 23:33:02 +01:00

parisc

parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header

2017-06-20 14:04:16 +02:00

powerpc

powerpc/asm: Mark cr0 as clobbered in mftb()

2017-11-01 22:12:43 +01:00

s390

s390/pci: fix use after free in dma_init

2017-06-20 14:04:33 +02:00

score

score: fix copy_from_user() and friends

2017-02-06 23:33:00 +01:00

sh

mm: larger stack guard gap, between vmas

2017-06-21 15:42:43 +02:00

sparc

mm: larger stack guard gap, between vmas

2017-06-21 15:42:43 +02:00

tile

mm: larger stack guard gap, between vmas

2017-06-21 15:42:43 +02:00

um

uml: flush stdout before forking

2016-03-03 15:06:23 -08:00

unicore32

nosave: consolidate __nosave_{begin,end} in <asm/sections.h>

2015-05-06 21:56:28 +02:00

x86

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

2017-11-02 07:16:27 +01:00

xtensa

mm: larger stack guard gap, between vmas

2017-06-21 15:42:43 +02:00

.gitignore

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Kconfig

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