Oleg Nesterov 704b836cbf mm_for_maps: take ->cred_guard_mutex to fix the race with exec ... The problem is minor, but without ->cred_guard_mutex held we can race with exec() and get the new ->mm but check old creds. Now we do not need to re-check task->mm after ptrace_may_access(), it can't be changed to the new mm under us. Strictly speaking, this also fixes another very minor problem. Unless security check fails or the task exits mm_for_maps() should never return NULL, the caller should get either old or new ->mm. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>		2009-08-10 20:49:26 +10:00
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array.c	proc: avoid information leaks to non-privileged processes	2009-05-04 15:14:23 -07:00
base.c	mm_for_maps: take ->cred_guard_mutex to fix the race with exec	2009-08-10 20:49:26 +10:00
cmdline.c	proc: switch /proc/cmdline to seq_file	2008-10-23 14:29:04 +04:00
cpuinfo.c	proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c	2008-10-23 15:05:11 +04:00
devices.c	proc: move /proc/devices code to fs/proc/devices.c	2008-10-23 15:02:18 +04:00
generic.c	proc 1/2: do PDE usecounting even for ->read_proc, ->write_proc	2009-03-31 01:14:27 +04:00
inode.c	proc 2/2: remove struct proc_dir_entry::owner	2009-03-31 01:14:44 +04:00
internal.h	Move junk from proc_fs.h to fs/proc/internal.h	2009-06-11 21:36:01 -04:00
interrupts.c	proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c	2008-10-23 15:15:46 +04:00
Kconfig	proc: move PROC_PAGE_MONITOR to fs/proc/Kconfig	2008-10-10 04:18:57 +04:00
kcore.c	proc: move all /proc/kcore stuff to fs/proc/kcore.c	2008-10-23 18:32:38 +04:00
kmsg.c	proc: move /proc/kmsg creation to fs/proc/kmsg.c	2008-10-23 14:35:08 +04:00
loadavg.c	sched, timers: cleanup avenrun users	2009-05-15 15:32:45 +02:00
Makefile	proc: export statistics for softirq to /proc	2009-06-18 13:03:41 -07:00
meminfo.c	mm: remove CONFIG_UNEVICTABLE_LRU config option	2009-06-16 19:47:42 -07:00
mmu.c	fs/proc/mmu.c: headers butchery	2007-10-17 08:42:48 -07:00
nommu.c	trivial: fix typo "kernal" -> "kernel"	2009-03-30 15:21:57 +02:00
page.c	mm: remove CONFIG_UNEVICTABLE_LRU config option	2009-06-16 19:47:42 -07:00
proc_devtree.c	procfs: remove sparse errors in proc_devtree.c	2009-06-18 13:03:41 -07:00
proc_net.c	proc: stop using BKL	2009-01-05 12:27:44 +03:00
proc_sysctl.c	constify dentry_operations: procfs	2009-03-27 14:44:01 -04:00
proc_tty.c	proc tty: remove struct tty_operations::read_proc	2009-04-01 08:59:10 -07:00
root.c	Convert obvious places to deactivate_locked_super()	2009-05-09 10:49:40 -04:00
softirqs.c	proc: export statistics for softirq to /proc	2009-06-18 13:03:41 -07:00
stat.c	proc: export statistics for softirq to /proc	2009-06-18 13:03:41 -07:00
task_mmu.c	mm_for_maps: shift down_read(mmap_sem) to the caller	2009-08-10 20:48:32 +10:00
task_nommu.c	mm_for_maps: shift down_read(mmap_sem) to the caller	2009-08-10 20:48:32 +10:00
uptime.c	Revert "proc: revert /proc/uptime to ->read_proc hook"	2009-03-31 01:14:58 +04:00
version.c	proc: switch /proc/version to seq_file	2008-10-23 14:19:58 +04:00
vmcore.c	proc: vmcore - use kzalloc in get_new_element()	2009-06-18 13:03:41 -07:00