Linus Torvalds 76597cd314 proc: fix oops on invalid /proc/<pid>/maps access ...

When m_start returns an error, the seq_file logic will still call m_stop
with that error entry, so we'd better make sure that we check it before
using it as a vma.

Introduced by commit ec6fd8a4355c ("report errors in /proc/*/*map*
sanely"), which replaced NULL with various ERR_PTR() cases.

(On ia64, you happen to get a unaligned fault instead of a page fault,
since the address used is generally some random error code like -EPERM)

Reported-by: Anca Emanuel <anca.emanuel@gmail.com>
Reported-by: Tony Luck <tony.luck@intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Américo Wang <xiyou.wangcong@gmail.com>
Cc: Stephen Wilson <wilsons@start.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2011-03-27 19:09:29 -07:00

..

array.c

proc: protect mm start_code/end_code in /proc/pid/stat

2011-03-23 19:46:37 -07:00

base.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2011-03-23 20:51:42 -07:00

cmdline.c

proc: switch /proc/cmdline to seq_file

2008-10-23 14:29:04 +04:00

consoles.c

console: rename acquire/release_console_sem() to console_lock/unlock()

2011-01-26 10:50:06 +10:00

cpuinfo.c

proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c

2008-10-23 15:05:11 +04:00

devices.c

proc: use seq_puts()/seq_putc() where possible

2011-01-13 08:03:16 -08:00

generic.c

proc: make struct proc_dir_entry::namelen unsigned int

2011-03-23 19:46:37 -07:00

inode.c

procfs: kill the global proc_mnt variable

2011-03-23 19:46:58 -07:00

internal.h

procfs: kill the global proc_mnt variable

2011-03-23 19:46:58 -07:00

interrupts.c

proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c

2008-10-23 15:15:46 +04:00

Kconfig

kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT

2011-01-20 17:02:05 -08:00

kcore.c

/proc/kcore: fix seeking

2011-01-13 08:03:17 -08:00

kmsg.c

procfs: Use generic_file_llseek in /proc/kmsg

2010-04-09 16:35:41 +02:00

loadavg.c

sched, timers: cleanup avenrun users

2009-05-15 15:32:45 +02:00

Makefile

proc: move proc_console.c to fs/proc/consoles.c

2011-01-13 08:03:17 -08:00

meminfo.c

thp: transparent hugepage vmstat

2011-01-13 17:32:43 -08:00

mmu.c

fs/proc/mmu.c: headers butchery

2007-10-17 08:42:48 -07:00

nommu.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

page.c

thp: remove PG_buddy

2011-01-13 17:32:43 -08:00

proc_devtree.c

of/flattree: Drop an uninteresting message to pr_debug level

2011-03-02 13:45:18 -07:00

proc_net.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

proc_sysctl.c

Merge branch 'next' into for-linus

2011-03-16 09:41:17 +11:00

proc_tty.c

proc: use seq_puts()/seq_putc() where possible

2011-01-13 08:03:16 -08:00

root.c

procfs: kill the global proc_mnt variable

2011-03-23 19:46:58 -07:00

softirqs.c

proc: use seq_puts()/seq_putc() where possible

2011-01-13 08:03:16 -08:00

stat.c

proc: use seq_puts()/seq_putc() where possible

2011-01-13 08:03:16 -08:00

task_mmu.c

proc: fix oops on invalid /proc/<pid>/maps access

2011-03-27 19:09:29 -07:00

task_nommu.c

report errors in /proc/*/*map* sanely

2011-03-23 16:36:50 -04:00

uptime.c

[PATCH] Fix idle time field in /proc/uptime

2009-09-24 10:16:24 +02:00

version.c

proc: switch /proc/version to seq_file

2008-10-23 14:19:58 +04:00

vmcore.c

ARM: 6485/5: proc/vmcore - allow archs to override vmcore_elf_check_arch()

2010-11-30 13:39:55 +00:00