Konstantin Khlebnikov 8526d84f81 fs/proc/task_mmu.c: do not show VmExe bigger than total executable virtual memory ...

If start_code / end_code pointers are screwed then "VmExe" could be
bigger than total executable virtual memory and "VmLib" becomes
negative:

  VmExe:	  294320 kB
  VmLib:	18446744073709327564 kB

VmExe and VmLib documented as text segment and shared library code size.

Now their sum will be always equal to mm->exec_vm which sums size of
executable and not writable and not stack areas.

I've seen this for huge (>2Gb) statically linked binary which has whole
world inside.  For it start_code ..  end_code range also covers one of
rodata sections.  Probably this is bug in customized linker, elf loader
or both.

Anyway CONFIG_CHECKPOINT_RESTORE allows to change these pointers, thus
we cannot trust them without validation.

Link: http://lkml.kernel.org/r/150728955451.743749.11276392315459539583.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2018-01-31 17:18:37 -08:00

..

array.c

proc: fix coredump vs read /proc/*/stat race

2018-01-19 10:09:41 -08:00

base.c

proc: show si_ptr in /proc/<pid>/timers without hashing

2017-12-06 18:23:27 -08:00

cmdline.c

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

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

consoles.c

fs/proc: don't use module_init for non-modular core code

2014-01-23 16:37:02 -08:00

cpuinfo.c

x86 / CPU: Always show current CPU frequency in /proc/cpuinfo

2017-11-15 19:46:50 +01:00

devices.c

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

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

fd.c

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

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

fd.h

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

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

generic.c

procfs: use faster rb_first_cached()

2017-09-08 18:26:49 -07:00

inode.c

Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2018-01-30 17:58:07 -08:00

internal.h

Merge branch 'work.whack-a-mole' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-11-22 20:20:02 -10:00

interrupts.c

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

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

Kconfig

fs, proc: add help for CONFIG_PROC_CHILDREN

2015-07-17 16:39:52 -07:00

kcore.c

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

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

kmsg.c

fs: annotate ->poll() instances

2017-11-27 16:20:05 -05:00

loadavg.c

pid: replace pid bitmap implementation with IDR API

2017-11-17 16:10:03 -08:00

Makefile

proc: : uninline name_to_int()

2017-11-17 16:10:00 -08:00

meminfo.c

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

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

namespaces.c

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

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

nommu.c

Replace <asm/uaccess.h> with <linux/uaccess.h> globally

2016-12-24 11:46:01 -08:00

page.c

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

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

proc_net.c

procfs: use faster rb_first_cached()

2017-09-08 18:26:49 -07:00

proc_sysctl.c

fs: annotate ->poll() instances

2017-11-27 16:20:05 -05:00

proc_tty.c

TTY/Serial patches for 4.15-rc1

2017-11-13 21:05:31 -08:00

root.c

Rename superblock flags (MS_xyz -> SB_xyz)

2017-11-27 13:05:09 -08:00

self.c

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

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

softirqs.c

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

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

stat.c

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

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

task_mmu.c

fs/proc/task_mmu.c: do not show VmExe bigger than total executable virtual memory

2018-01-31 17:18:37 -08:00

task_nommu.c

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

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

thread_self.c

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

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

uptime.c

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

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

util.c

proc: use do-while in name_to_int()

2017-11-17 16:10:00 -08:00

version.c

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

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

vmcore.c

userfaultfd: non-cooperative: add event for memory unmaps

2017-02-24 17:46:55 -08:00